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Review Article Antitumor Phenylpropanoids Found in Essential Oils Adriana Andrade Carvalho, 1 Luciana Nalone Andrade, 2 Élida Batista Vieira de Sousa, 3 and Damião Pergentino de Sousa 2,3 1 ucleo de Farm´ acia, Universidade Federal de Sergipe, 58051-970 Lagarto, SE, Brazil 2 Departamento de Farm´ acia, Universidade Federal de Sergipe, 49100-000 S˜ ao Crist´ ov˜ ao, SE, Brazil 3 Departamento de Ciˆ encias Farmacˆ euticas, Universidade Federal da Para´ ıba, CP 5009, 58051-970 Jo˜ ao Pessoa, PB, Brazil Correspondence should be addressed to Dami˜ ao Pergentino de Sousa; damiao [email protected] Received 5 July 2014; Accepted 12 October 2014 Academic Editor: Gagan Deep Copyright © 2015 Adriana Andrade Carvalho et al. is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. e search for new bioactive substances with anticancer activity and the understanding of their mechanisms of action are high- priorities in the research effort toward more effective treatments for cancer. e phenylpropanoids are natural products found in many aromatic and medicinal plants, food, and essential oils. ey exhibit various pharmacological activities and have applications in the pharmaceutical industry. In this review, the anticancer potential of 17 phenylpropanoids and derivatives from essential oils is discussed. Chemical structures, experimental report, and mechanisms of action of bioactive substances are presented. 1. Introduction Cancer is a global health concern that causes mortality in both children and adults. More than 100 distinct types and subtypes of cancer can be found within specific organs [1]. Despite the success of several cancer therapies, an ideal anticancer drug has not been discovered, and numerous side effects limit treatment. However, research into new drugs has revealed a variety of new chemical structures and potent biological activities that are of interest in the context of cancer treatment. Essential oils are natural products that are a mixture of volatile lipophilic substances. e chemical composition of essential oils includes monoterpenes, sesquiterpenes, and phenylpropanoids, which are usually oxidized in an aliphatic chain or aromatic ring. Several studies have shown that this chemical class has several biological activities, including analgesic, anticonvulsant, and anti-inflammatory effects [24]. Antitumor activity has been reported for essential oils against several tumor cell lines [57], and these oils contain a high percentage of phenylpropanoids, which are believed to contribute to their pharmacological activity [8, 9]. is paper presents a literature review of phenyl- propanoids from essential oils with respect to antitumor activity, with chemical structures and names of bioactive compounds provided. e phenylpropanoids presented in this review were selected on the basis of effects shown in specific experimental models for evaluation of antitumor activity and/or by complementary studies aimed at elucidat- ing mechanisms of action (Table 1). e selection of essential oil constituents in the database was related to various terms, including essential oils and phenylpropanoids, as well as names of representative compounds of chemical groups, and refined with respect to antitumor activity, cytotoxic activity, and cytotoxicity. e search was performed using scientific literature databases and Chemical Abstracts Service (CAS) in November 2013. 2. Phenylpropanoids 2.1. Eugenol. Eugenol is the active component of essential oil isolated from clove (Syzygium aromaticum) and has antimutagenic, antigenotoxic, and anti-inflammatory prop- erties [10]. Eugenol also has cytotoxic activity. is drugs can induce cell death in several tumor and cell types: mast cells [1113], breast adenocarcinoma [13], melanoma cells [1416], leukemia [14, 17], colon carcinoma [18], cervical carcinoma Hindawi Publishing Corporation BioMed Research International Volume 2015, Article ID 392674, 21 pages http://dx.doi.org/10.1155/2015/392674
22

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Page 1: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

Review ArticleAntitumor Phenylpropanoids Found in Essential Oils

Adriana Andrade Carvalho1 Luciana Nalone Andrade2

Eacutelida Batista Vieira de Sousa3 and Damiatildeo Pergentino de Sousa23

1Nucleo de Farmacia Universidade Federal de Sergipe 58051-970 Lagarto SE Brazil2Departamento de Farmacia Universidade Federal de Sergipe 49100-000 Sao Cristovao SE Brazil3Departamento de Ciencias Farmaceuticas Universidade Federal da Paraıba CP 5009 58051-970 Joao Pessoa PB Brazil

Correspondence should be addressed to Damiao Pergentino de Sousa damiao desousayahoocombr

Received 5 July 2014 Accepted 12 October 2014

Academic Editor Gagan Deep

Copyright copy 2015 Adriana Andrade Carvalho et al This is an open access article distributed under the Creative CommonsAttribution License which permits unrestricted use distribution and reproduction in any medium provided the original work isproperly cited

The search for new bioactive substances with anticancer activity and the understanding of their mechanisms of action are high-priorities in the research effort toward more effective treatments for cancer The phenylpropanoids are natural products found inmany aromatic andmedicinal plants food and essential oilsThey exhibit various pharmacological activities and have applicationsin the pharmaceutical industry In this review the anticancer potential of 17 phenylpropanoids and derivatives from essential oilsis discussed Chemical structures experimental report and mechanisms of action of bioactive substances are presented

1 Introduction

Cancer is a global health concern that causes mortality inboth children and adults More than 100 distinct types andsubtypes of cancer can be found within specific organs [1]Despite the success of several cancer therapies an idealanticancer drug has not been discovered and numerous sideeffects limit treatment However research into new drugshas revealed a variety of new chemical structures and potentbiological activities that are of interest in the context of cancertreatment

Essential oils are natural products that are a mixtureof volatile lipophilic substances The chemical compositionof essential oils includes monoterpenes sesquiterpenes andphenylpropanoids which are usually oxidized in an aliphaticchain or aromatic ring Several studies have shown thatthis chemical class has several biological activities includinganalgesic anticonvulsant and anti-inflammatory effects [2ndash4] Antitumor activity has been reported for essential oilsagainst several tumor cell lines [5ndash7] and these oils contain ahigh percentage of phenylpropanoids which are believed tocontribute to their pharmacological activity [8 9]

This paper presents a literature review of phenyl-propanoids from essential oils with respect to antitumor

activity with chemical structures and names of bioactivecompounds provided The phenylpropanoids presented inthis review were selected on the basis of effects shown inspecific experimental models for evaluation of antitumoractivity andor by complementary studies aimed at elucidat-ing mechanisms of action (Table 1) The selection of essentialoil constituents in the database was related to various termsincluding essential oils and phenylpropanoids as well asnames of representative compounds of chemical groups andrefined with respect to antitumor activity cytotoxic activityand cytotoxicity The search was performed using scientificliterature databases and Chemical Abstracts Service (CAS) inNovember 2013

2 Phenylpropanoids

21 Eugenol Eugenol is the active component of essentialoil isolated from clove (Syzygium aromaticum) and hasantimutagenic antigenotoxic and anti-inflammatory prop-erties [10] Eugenol also has cytotoxic activity This drugs caninduce cell death in several tumor and cell types mast cells[11ndash13] breast adenocarcinoma [13] melanoma cells [14ndash16]leukemia [14 17] colon carcinoma [18] cervical carcinoma

Hindawi Publishing CorporationBioMed Research InternationalVolume 2015 Article ID 392674 21 pageshttpdxdoiorg1011552015392674

2 BioMed Research International

[19ndash23] prostate cancer [24] submandibular gland adeno-carcinoma [25] human dental pulp [26] murine peritonealmacrophages [27] androgen-insensitive prostate cancer oralsquamous carcinoma [17 28] human submandibular glandcarcinoma [29 30] salivary gland [30] gingival fibroblasts[31ndash33] hepatoma [34] human dental pulp cells [35] humangingival fibroblasts and epidermoid carcinoma cells derivedfrom human submandibular gland [36 37] Furthermoreeugenol is neither carcinogenic nor mutagenic and is notcytotoxic in lymphocytes [14] Isoeugenol was found to bemore toxic than eugenol when the cytotoxicity of isoeugenolbis-eugenol and eugenol was tested in HSG (human sub-mandibular gland adenocarcinoma) cell lines [25] In thisway Atsumi and collaborators [37] compared the cytotoxic-ity of dehydrodiisoeugenol alpha-di-isoeugenol isoeugenoleugenol and bis-eugenol in a gland tumor cell line (HSG) andnormal human gingival fibroblasts (HGF) Both the cytotoxicactivity and the DNA synthesis inhibitory activity of thesecompounds against the salivary gland tumor cell line (HSG)and normal human gingival fibroblasts (HGF) were greatestin dehydrodiisoeugenol and alpha-di-isoeugenol followed byisoeugenol which showed greater activity than eugenol [37]

Synergistic effects have been demonstrated for eugenolwith gemcitabine and fluorouracil which potentiated itscytotoxic effect on HeLa cells (human cervical carcinoma)[19 20 38] Eugenol also significantly decreased expression ofBcl-2 COX2 and IL-1b in the HeLa cell line [20] Atsumi andcollaborators [39] demonstrated that the effects of eugenolon ROS productionwere biphasic with production enhancedat lower eugenol concentrations (5ndash10120583M) and inhibited athigher concentrations (500120583M) Suzuki and collaborators[40] demonstrated that eugenol stimulated production ofsuperoxide (O

2

minus) free radicals in guinea pig neutrophilswithout lag time

Eugenol halts cells in the replication phase suggestingthat cells stop to repair DNA damage and either reenterthe cell cycle or in cases of massive DNA damage activateapoptosis Melanoma cells treated with eugenol remain inthe S phase and undergo apoptosis and eugenol treatmentupregulates numerous enzymes involved in the base excisionrepair pathway including E2F family members [15]

In another study eugenol at higher doses induced chro-mosomal aberrations with significant increases (35) inaberrant cells at a concentration of 2500120583M in V79 cells(Chinese hamster lung fibroblast) Eugenol was also assayedfor genotoxic activity via inhibition of topoisomerase II andshowed dose-dependent inhibition [41]

The chemopreventive potential of eugenol was also stud-ied [10] Using in vivo methods Pal and collaborators [10]showed that eugenol inhibits skin carcinogenesis inducedby dimethylbenz[a]anthracene (DMBA) croton oil in miceprobably due to inhibition of proliferation-associated genes(c-Myc and H-ras) and antiapoptotic gene Bcl2 along withupregulation of proapoptotic genes Bax p53 and activecaspase-3 [10] Kaur and collaborators [42] studied thechemopreventive effect of eugenol in DMBATPA-inducedcarcinogenesis in murine skin They showed that topicalapplication of eugenol resulted in a marked decline in hyper-plasia epidermal ODC activity protein expression of iNOS

and COX-2 and secretion of proinflammatory cytokinesall of which are classical markers of inflammation andtumor promotion [42] In addition eugenol has been shownto produce antioxidant effects via free radical scavengingactivity and reduction of ROS [22 36 43] Atsumi andcollaborators [36] showed that visible-light irradiation andelevation of the pH of the eugenol-containing mediumresulted in significantly lower cell survival in HSG culturesin comparison with eugenol alone

In vivomurine assays have also demonstrated the antitu-mor potential of eugenol Treatment of female B6D2F1 micebearing B16 melanoma allografts with 125mgkg of eugenolresulted in a small but highly significant (119875 = 00057) 24-day tumor growth delay Furthermore the treated animalshad no fatalities that were attributed to metastasis or tumorinvasion which is indicative of the ability of eugenol to sup-pressmelanomametastasis [15] Jaganathan and collaborators[44] also demonstrated the antitumor potential of eugenolusing an in vivo assay in which a dose of 100mgkg caused2435 tumor growth inhibition and inhibited the growthof Ehrlich ascites by 2888 In contrast Tangke Arung andcollaborators [45] showed that 100 120583gmL eugenol inhibitedmelanin formation by more than 42 in the B16 melanomacell line in vitro with cytotoxicity in 5 of cells At a higherconcentration of 200120583gmL 23 cytotoxicity was observedwhich demonstrated that eugenol could be useful as a skin-whitening agent for the treatment of hyperpigmentation [45]

Furthermore it has been demonstrated that eugenolwhenmixed with zinc oxide has a restorative effect on dentalerosion and demineralization [46] Using human dental pulpcells (D824) it was observed that eugenol had a cytotoxiceffect with reduction of cell growth and inhibition of colony-forming cell [35] D824 cells have the potential for metabolicactivation because they are a mixed-cell population com-posed of many types of cells and thus the cytotoxic activityof eugenol could be attributable to eugenol metabolitesHowever Marya and collaborators [46] showed a hemolyticeffect of eugenol which could be a possible side effect ofthis drug In addition Anpo and collaborators [35] showedthat eugenol reduced growth and survival of human dentalpulp cells as well as collagen synthesis and bone sialoprotein(BSP) expression which play a critical role in physiologicaland reparative dentinogenesis Eugenol is a phenylpropanoidwith promising antitumor drug profile Further studies toelucidate the mechanisms that mediate the adverse effects ofeugenol are necessary

22 Methyleugenol Isoeugenol Methylisoeugenol and 11015840-Hyd-roxymethyleugenol Methyleugenol is a substituted alkenyl-benzene found in a variety of foods and essential oils Itis structurally similar to eugenol and found in many plantspecies [47] Methyleugenol produced cytotoxic effects inrat and mouse hepatocytes [47 48] and leukemia [48]Methyleugenol also produced genotoxicity in mice [47] andin cultured cells [49] and caused neoplastic lesions in thelivers of Fischer 344 rats and B6C3F1 mice [47]

Isoeugenol is a phenylpropanoid produced by plantsAs a flavoring agent isoeugenol is added to nonalcoholicdrinks baked foods and chewing gums Inmale F344N rats

BioMed Research International 3

Table1Essentialoilph

enylprop

anoids

with

antitum

oralactiv

ity

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Euge

nol

(4-a

llyl-2

-met

hoxy

phen

ol)

MeO

OH

Anaph

ylaxismod

elAp

optotic

manifestations

viap

hospho

-ser

15-p53

into

mito

chon

dria

Mastcells

[11]

Skin

carcinogenesismod

elInhibitio

nof

thep

roliferationassociated

genesc

-Myc

and

H-ras

andantia

poptoticgene

Bcl2alon

gwith

upregu

latio

nof

proapo

ptoticgenesB

axp53and

activ

ecaspase-3

Mice

[12]

Trypan-bluea

ssays

Cytotoxica

ctivity

B16-F10Sbcl2

WM3211

WM98-1andWM1205Lu

PC-

3hu

man

ging

ivalfib

roblasts

oral

mucosaln

eutro

philsmdashmale

guinea

pigrath

epatocytes

cells

[1415

233233

4849]

Mela

nomac

ellproliferation

Deregulationof

theE

2Ffamily

oftranscrip

tionfactors

transcrip

tionalactivity

ofE2

F1Sbcl2

WM3211W

M98-1and

WM1205Lu

cells

[15]

Flow

cytometry

analysis

Cytotoxica

ctivity

P-815K-

562CE

Mand

MCF

-7cells

[13]

VLirr

adiatio

ntim

eAntioxidativ

ereactivity

HSG

HSC

-2and

HL-60

cells

[17]

MTT

assay

Cytotoxica

ctivity

B16-F10P-815K-

562CE

M

MCF

-7M

CF-7

gemH

eLa

DU-145K

BHSG

hum

andental

pulpm

urinep

erito

neal

macroph

ages

HL-60H

epG-2

B16cells

[1319ndash

2225ndash

293845

4648]

DPP

Hassay

Antioxidativ

eactivity

Caco-2c

ellsandVH10

fibroblasts

[18]

Flow

cytometer

analysis

Enhanced

thea

ccum

ulationof

cells

intheS

andG2M

phasew

hich

may

beun

ableto

divide

HeLac

ells

DAPI

staining

Increase

inthen

umbero

fapo

ptoticcells

Invitro

hemolyticactiv

ityHem

olyticactiv

ityHum

anerythrocytes

[19]

Caspase-3colorim

etric

assay

Indu

cecaspase3

-mediatedapop

tosis

RT-PCR

Anticancera

ctivities

viaa

poptosisindu

ctionand

anti-inflammatorydo

wnregulationof

Bcl-2

COX-

2and

IL-1120573

RT-PCR

Dow

nregulated

thee

xpressionof

Bcl-2

COX-

2andIL-120573

HeLac

ells

[20]

Flow

cytometer

analysis

Increasedpo

pulatio

nof

cells

G2M

phaseb

y45-fold

PC-3

cells

[24]

Western

blot

andRT

-PCR

analysis

Redu

cedexpressio

nof

antia

poptoticproteinBc

l-2and

enhanced

expressio

nof

proapo

ptoticproteinBa

xDPP

Hradical-scaveng

ing

activ

ityFo

rmationof

dimers

HSG

cells

[25]

ELISA

Redu

cedthen

icotine-indu

cedRO

SNOgeneratio

nand

iNOSIIexpression

Murinep

erito

nealmacroph

ages

[27]

4 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectro

photom

etric

analysis

Increase

inLD

Hrelease

DU-145

andKB

cells

[28]

ESRanalysis

Activ

ityof

thep

rodu

ctionof

phenoxylradicalswith

most

efficiently

scavengedreactiv

eoxygen

HSG

cells

[29]

Laserc

ytom

etry

analysis

Prod

uctio

nof

ROSindu

cedby

VL-irr

adiatedissig

nificantly

affectedby

pH

Antioxidantsp

rodu

ction

Prod

uced

antio

xidantsinalkalin

esolutions

Hum

ansalivaryglandandoral

squamou

scells

[30]

DPP

Hassay

Apop

tosis-in

ducing

effect

HGFandHSG

cells

[31]

TBAanalysislip

idoxidation

Depletedintracellularg

lutathioneprotectcells

from

the

genetic

attack

ofreactiv

eoxygenspeciesv

iainhibitio

nof

xanthine

oxidasea

ctivity

andlip

idperoxidatio

nOralm

ucosalfib

roblasts

[32]

ATPassay

Decreased

cellu

larA

TPlevelinac

oncentratio

n-and

time-depend

entm

anner

NRassay

Intracellularg

lutathione

levels

HFF

andHepG2cells

[33]

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

HSG

cells

[34]

CAsa

ssay

Indu

cedad

ose-depend

entincreaseo

faberrantcells

V79

cells

[41]

Topo

IIactiv

ityassay

Inhibitio

nof

topo

isomeraseII

Croton

oilind

uced

skin

carcinogenesis

Inhibitio

nof

thep

roliferationassociated

genesc

-Myc

and

H-ras

andantia

poptoticgene

Bcl2alon

gwith

upregu

latio

nof

proapo

ptoticgenesB

axp53and

activ

ecaspase-3

Swiss

mice

[36]

DMBA

TPA

-indu

ced

carcinogenesisin

murines

kin

Declin

edof

hyperplasia

epiderm

alODCactiv

ityand

proteinexpressio

nof

iNOSCO

X-2andsecretionof

proinfl

ammatorycytokines

Swiss

mice

[42]

TUNEL

assay

Upregulationof

p53expressio

nwith

acon

comitant

increase

inp21W

AF1

levelsin

epidermalcells

indicatin

gindu

ctionof

damagetotheD

NA

Flow

cytometric

analysis

cDNAarrayanalysisshow

edthateugeno

lcaused

deregu

latio

nof

theE

2Ffamily

oftranscrip

tionfactors

WM1205Lu

cells

[24]

TUNEL

assay

Indu

cesa

poptosisin

melanom

atum

ors

WM1205Lu

cells

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

SK-O

V-3XF

-498and

HCT

-15

cells

[76]

MurineE

hrlichascitesa

ndsolid

carcinom

amod

els

Inhibitthe

grow

thof

Ehrlich

ascites

BALB

cmice

[44]

DPP

Hassay

Antioxidatio

nactiv

ityHepG2cells

[22]

Western

blot

analysis

Decreased

thep

rotein

expressio

nof

BSPin

aconcentration-depend

entm

anner

Hum

andentalpu

lpcells

[35]

DPP

Hassay

Antioxidant

effect

Raw2647cells

[43]

VLirr

adiatio

nMTT

assay

Generationof

eugeno

lradicals

HSG

andHGFcells

[36]

Laserc

ytom

eter

Generationof

ROS

ESRanalysis

Prod

uced

phenoxylradicals

HSG

andHGFcells

[37]

Superoxide

generatio

nspectro

photom

eter

Stim

ulationthep

rodu

ctionof

superoxide

(O2

minus)

Neutro

philsmdashmaleg

uineap

ig[40]

BioMed Research International 5

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Met

hyle

ugen

ol

(4-a

llyl-1

2-d

imet

hoxy

benz

ene)

MeO

OM

e

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

MTT

assay

DPP

Hassay

Cytotoxica

ctivity

Antioxidativ

eproperties

HL-60H

epG-2W

M266-4

SK-M

el-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elAand

GR-Melcells

[1648]

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

Cornoilgavage

Carcinogenicactiv

ityisbasedon

increasedincidences

ofhepatocellu

lara

deno

mahepatocellu

larc

arcino

maand

hepatocellu

lara

deno

mao

rcarcino

ma(

combined)

F344

NratsandB6

C3F1

mice

[50]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

Isoe

ugen

ol

(4-p

rope

nyl-2

-met

hoxy

phen

ol)

OH

CH3O

MTT

assay

Cytotoxica

ctivity

HSG

cells

[29]

DPP

Hradical-scaveng

ing

activ

ityCormationof

dimers

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

[39]

6 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

H3CO

H3CO

Met

hyl-i

soeu

geno

l (4

-ally

l-12

-dim

etho

xybe

nzen

e)MTT

assay

Inhibitio

nof

cellproliferatio

nWM266-4SK

-Mel-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elA

andGR-Melcells

[16]

HO

-Hyd

roxy

met

hyle

ugen

ol (120572

-eth

enyl

-34

-di

met

hoxy

benz

enem

etha

nol)

OCH

3

1998400

CH3O

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

BioMed Research International 7

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

OO

Safro

le (4

-ally

l-12

-di

met

hoxy

benz

ene

(met

hyle

ugen

ol))

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

Trypan-bluee

xclusio

nassay

Potentialcytotoxiceffects

Rath

epatocytes

andSC

C-4cells

[4751

54]

Flow

cytometric

assay

Indu

ctionof

apop

tosis

ofcells

byinvolvem

ento

fmito

chon

dria-a

ndcaspase-depend

entsignalp

athw

ay

SCC-

4cells

[51]

Western

blottin

ganalysis

Upregulationof

thep

rotein

expressio

nof

BaxandBidand

downregulationof

thep

rotein

levelsof

Bcl-2

(upregulation

ofther

atio

ofBa

xBc

l-2)resulting

incytochromec

release

prom

oted

Apaf-1levelandsequ

entia

lactivationof

caspase-9andcaspase-3in

atim

e-depend

entm

anner

Real-timeP

CRmRN

Aexpressio

nsof

caspases

38and9

MTT

assay

Cytotoxice

ffect

Hum

anBM

Fs[52]

Western

blot

analysis

Activ

ateN

F-120581Bexpressio

nthatmay

beinvolved

inthe

pathogenesisof

OSF

andmediatedby

ERKactiv

ationand

COX-

2sig

naltransdu

ctionpathway

Fura-2

asap

robe

assay

Indu

ceda[

Ca2+] 119894increase

bycausingCa

2+releasefrom

the

endo

plasmicretic

ulum

inap

hospho

lipaseC

-and

protein

kinase

C-independ

entfashion

andby

indu

cing

Ca2+influ

xPC

3cells

[53]

Com

etassay(D

API)staining

Indu

cedapop

tosis

(chrom

atin

cond

ensatio

n)andDNA

damage

HL-60

cells

[51]

Flow

cytometric

analysis

Increasedthep

rodu

ctionof

reactiv

eoxygenspecies(RO

S)andCa

2+andredu

cedthem

itochon

drialm

embrane

potential

Western

blottin

ganalysisconfocallaser

microscop

y

Prom

oted

thee

xpressionof

glucose-regu

latedprotein78

(GRP

78)grow

tharrest-

andDNAdamage-indu

cibleg

ene

153(G

ADD153)and

activ

atingtranscrip

tionfactor

6120572(ATF

-6120572)

Flow

cytometric

analysis

Prom

oted

thelevels

ofCD

11bandMac-3

thatmight

bethe

reason

forp

romotingthea

ctivity

ofph

agocytosis

redu

cedthec

ellp

opulationsuch

asCD

3andCD

19cells

NKcells

[58]

Ames

test

Mutagenicity

activ

itySalm

onellaTA

98[59]

8 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Safro

le-2

-3-o

xide

4-(2

3-e

poxy

prop

yl)-

12-

(met

hyle

nedi

oxy)

OOO

MTT

assay

Prod

uced

toxicityin

cells

inad

ose-

andtim

e-depend

ent

manner

HepG2cells

FVBmice

[56]

Com

etassay

Sign

ificant

dose-dependent

increase

inthed

egreeo

fDNA

(strandbreaks)

Cytotoxico

rgenotoxiceffectin

vivomdashipC

ometassay

Increase

inmeanCom

ettailmom

entinperip

heralblood

leuk

ocytes

andin

thefrequ

ency

ofmicronu

cleated

retic

ulocytes

HepG2cells

FVBmice

TUNEL

assay

Activ

ityof

caspases

38and9

A549cells

[58]

Myr

istic

in(5

-ally

l-3-m

etho

xy-1

2-

met

hyle

nedi

oxyb

enze

ne)

O

OOWestern

blot

assay

Cleavageso

fPARP

accom

panied

byan

accumulationof

cytochromec

andby

thea

ctivationof

caspase-3

SK-N

-SHcells

[60]

Estr

agol

e(1

-ally

l-4-m

etho

xybe

nzen

e)

OM

e

Indu

ctionof

GST

andQR

Indu

ctionof

GST

andQRin

mou

selivers

Four

strainso

fmou

se

AJO

laHsdC

57BL

6NHsd

BALB

cAnN

Hsdand

CBAJC

rHsd

[61]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

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Page 2: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

2 BioMed Research International

[19ndash23] prostate cancer [24] submandibular gland adeno-carcinoma [25] human dental pulp [26] murine peritonealmacrophages [27] androgen-insensitive prostate cancer oralsquamous carcinoma [17 28] human submandibular glandcarcinoma [29 30] salivary gland [30] gingival fibroblasts[31ndash33] hepatoma [34] human dental pulp cells [35] humangingival fibroblasts and epidermoid carcinoma cells derivedfrom human submandibular gland [36 37] Furthermoreeugenol is neither carcinogenic nor mutagenic and is notcytotoxic in lymphocytes [14] Isoeugenol was found to bemore toxic than eugenol when the cytotoxicity of isoeugenolbis-eugenol and eugenol was tested in HSG (human sub-mandibular gland adenocarcinoma) cell lines [25] In thisway Atsumi and collaborators [37] compared the cytotoxic-ity of dehydrodiisoeugenol alpha-di-isoeugenol isoeugenoleugenol and bis-eugenol in a gland tumor cell line (HSG) andnormal human gingival fibroblasts (HGF) Both the cytotoxicactivity and the DNA synthesis inhibitory activity of thesecompounds against the salivary gland tumor cell line (HSG)and normal human gingival fibroblasts (HGF) were greatestin dehydrodiisoeugenol and alpha-di-isoeugenol followed byisoeugenol which showed greater activity than eugenol [37]

Synergistic effects have been demonstrated for eugenolwith gemcitabine and fluorouracil which potentiated itscytotoxic effect on HeLa cells (human cervical carcinoma)[19 20 38] Eugenol also significantly decreased expression ofBcl-2 COX2 and IL-1b in the HeLa cell line [20] Atsumi andcollaborators [39] demonstrated that the effects of eugenolon ROS productionwere biphasic with production enhancedat lower eugenol concentrations (5ndash10120583M) and inhibited athigher concentrations (500120583M) Suzuki and collaborators[40] demonstrated that eugenol stimulated production ofsuperoxide (O

2

minus) free radicals in guinea pig neutrophilswithout lag time

Eugenol halts cells in the replication phase suggestingthat cells stop to repair DNA damage and either reenterthe cell cycle or in cases of massive DNA damage activateapoptosis Melanoma cells treated with eugenol remain inthe S phase and undergo apoptosis and eugenol treatmentupregulates numerous enzymes involved in the base excisionrepair pathway including E2F family members [15]

In another study eugenol at higher doses induced chro-mosomal aberrations with significant increases (35) inaberrant cells at a concentration of 2500120583M in V79 cells(Chinese hamster lung fibroblast) Eugenol was also assayedfor genotoxic activity via inhibition of topoisomerase II andshowed dose-dependent inhibition [41]

The chemopreventive potential of eugenol was also stud-ied [10] Using in vivo methods Pal and collaborators [10]showed that eugenol inhibits skin carcinogenesis inducedby dimethylbenz[a]anthracene (DMBA) croton oil in miceprobably due to inhibition of proliferation-associated genes(c-Myc and H-ras) and antiapoptotic gene Bcl2 along withupregulation of proapoptotic genes Bax p53 and activecaspase-3 [10] Kaur and collaborators [42] studied thechemopreventive effect of eugenol in DMBATPA-inducedcarcinogenesis in murine skin They showed that topicalapplication of eugenol resulted in a marked decline in hyper-plasia epidermal ODC activity protein expression of iNOS

and COX-2 and secretion of proinflammatory cytokinesall of which are classical markers of inflammation andtumor promotion [42] In addition eugenol has been shownto produce antioxidant effects via free radical scavengingactivity and reduction of ROS [22 36 43] Atsumi andcollaborators [36] showed that visible-light irradiation andelevation of the pH of the eugenol-containing mediumresulted in significantly lower cell survival in HSG culturesin comparison with eugenol alone

In vivomurine assays have also demonstrated the antitu-mor potential of eugenol Treatment of female B6D2F1 micebearing B16 melanoma allografts with 125mgkg of eugenolresulted in a small but highly significant (119875 = 00057) 24-day tumor growth delay Furthermore the treated animalshad no fatalities that were attributed to metastasis or tumorinvasion which is indicative of the ability of eugenol to sup-pressmelanomametastasis [15] Jaganathan and collaborators[44] also demonstrated the antitumor potential of eugenolusing an in vivo assay in which a dose of 100mgkg caused2435 tumor growth inhibition and inhibited the growthof Ehrlich ascites by 2888 In contrast Tangke Arung andcollaborators [45] showed that 100 120583gmL eugenol inhibitedmelanin formation by more than 42 in the B16 melanomacell line in vitro with cytotoxicity in 5 of cells At a higherconcentration of 200120583gmL 23 cytotoxicity was observedwhich demonstrated that eugenol could be useful as a skin-whitening agent for the treatment of hyperpigmentation [45]

Furthermore it has been demonstrated that eugenolwhenmixed with zinc oxide has a restorative effect on dentalerosion and demineralization [46] Using human dental pulpcells (D824) it was observed that eugenol had a cytotoxiceffect with reduction of cell growth and inhibition of colony-forming cell [35] D824 cells have the potential for metabolicactivation because they are a mixed-cell population com-posed of many types of cells and thus the cytotoxic activityof eugenol could be attributable to eugenol metabolitesHowever Marya and collaborators [46] showed a hemolyticeffect of eugenol which could be a possible side effect ofthis drug In addition Anpo and collaborators [35] showedthat eugenol reduced growth and survival of human dentalpulp cells as well as collagen synthesis and bone sialoprotein(BSP) expression which play a critical role in physiologicaland reparative dentinogenesis Eugenol is a phenylpropanoidwith promising antitumor drug profile Further studies toelucidate the mechanisms that mediate the adverse effects ofeugenol are necessary

22 Methyleugenol Isoeugenol Methylisoeugenol and 11015840-Hyd-roxymethyleugenol Methyleugenol is a substituted alkenyl-benzene found in a variety of foods and essential oils Itis structurally similar to eugenol and found in many plantspecies [47] Methyleugenol produced cytotoxic effects inrat and mouse hepatocytes [47 48] and leukemia [48]Methyleugenol also produced genotoxicity in mice [47] andin cultured cells [49] and caused neoplastic lesions in thelivers of Fischer 344 rats and B6C3F1 mice [47]

Isoeugenol is a phenylpropanoid produced by plantsAs a flavoring agent isoeugenol is added to nonalcoholicdrinks baked foods and chewing gums Inmale F344N rats

BioMed Research International 3

Table1Essentialoilph

enylprop

anoids

with

antitum

oralactiv

ity

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Euge

nol

(4-a

llyl-2

-met

hoxy

phen

ol)

MeO

OH

Anaph

ylaxismod

elAp

optotic

manifestations

viap

hospho

-ser

15-p53

into

mito

chon

dria

Mastcells

[11]

Skin

carcinogenesismod

elInhibitio

nof

thep

roliferationassociated

genesc

-Myc

and

H-ras

andantia

poptoticgene

Bcl2alon

gwith

upregu

latio

nof

proapo

ptoticgenesB

axp53and

activ

ecaspase-3

Mice

[12]

Trypan-bluea

ssays

Cytotoxica

ctivity

B16-F10Sbcl2

WM3211

WM98-1andWM1205Lu

PC-

3hu

man

ging

ivalfib

roblasts

oral

mucosaln

eutro

philsmdashmale

guinea

pigrath

epatocytes

cells

[1415

233233

4849]

Mela

nomac

ellproliferation

Deregulationof

theE

2Ffamily

oftranscrip

tionfactors

transcrip

tionalactivity

ofE2

F1Sbcl2

WM3211W

M98-1and

WM1205Lu

cells

[15]

Flow

cytometry

analysis

Cytotoxica

ctivity

P-815K-

562CE

Mand

MCF

-7cells

[13]

VLirr

adiatio

ntim

eAntioxidativ

ereactivity

HSG

HSC

-2and

HL-60

cells

[17]

MTT

assay

Cytotoxica

ctivity

B16-F10P-815K-

562CE

M

MCF

-7M

CF-7

gemH

eLa

DU-145K

BHSG

hum

andental

pulpm

urinep

erito

neal

macroph

ages

HL-60H

epG-2

B16cells

[1319ndash

2225ndash

293845

4648]

DPP

Hassay

Antioxidativ

eactivity

Caco-2c

ellsandVH10

fibroblasts

[18]

Flow

cytometer

analysis

Enhanced

thea

ccum

ulationof

cells

intheS

andG2M

phasew

hich

may

beun

ableto

divide

HeLac

ells

DAPI

staining

Increase

inthen

umbero

fapo

ptoticcells

Invitro

hemolyticactiv

ityHem

olyticactiv

ityHum

anerythrocytes

[19]

Caspase-3colorim

etric

assay

Indu

cecaspase3

-mediatedapop

tosis

RT-PCR

Anticancera

ctivities

viaa

poptosisindu

ctionand

anti-inflammatorydo

wnregulationof

Bcl-2

COX-

2and

IL-1120573

RT-PCR

Dow

nregulated

thee

xpressionof

Bcl-2

COX-

2andIL-120573

HeLac

ells

[20]

Flow

cytometer

analysis

Increasedpo

pulatio

nof

cells

G2M

phaseb

y45-fold

PC-3

cells

[24]

Western

blot

andRT

-PCR

analysis

Redu

cedexpressio

nof

antia

poptoticproteinBc

l-2and

enhanced

expressio

nof

proapo

ptoticproteinBa

xDPP

Hradical-scaveng

ing

activ

ityFo

rmationof

dimers

HSG

cells

[25]

ELISA

Redu

cedthen

icotine-indu

cedRO

SNOgeneratio

nand

iNOSIIexpression

Murinep

erito

nealmacroph

ages

[27]

4 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectro

photom

etric

analysis

Increase

inLD

Hrelease

DU-145

andKB

cells

[28]

ESRanalysis

Activ

ityof

thep

rodu

ctionof

phenoxylradicalswith

most

efficiently

scavengedreactiv

eoxygen

HSG

cells

[29]

Laserc

ytom

etry

analysis

Prod

uctio

nof

ROSindu

cedby

VL-irr

adiatedissig

nificantly

affectedby

pH

Antioxidantsp

rodu

ction

Prod

uced

antio

xidantsinalkalin

esolutions

Hum

ansalivaryglandandoral

squamou

scells

[30]

DPP

Hassay

Apop

tosis-in

ducing

effect

HGFandHSG

cells

[31]

TBAanalysislip

idoxidation

Depletedintracellularg

lutathioneprotectcells

from

the

genetic

attack

ofreactiv

eoxygenspeciesv

iainhibitio

nof

xanthine

oxidasea

ctivity

andlip

idperoxidatio

nOralm

ucosalfib

roblasts

[32]

ATPassay

Decreased

cellu

larA

TPlevelinac

oncentratio

n-and

time-depend

entm

anner

NRassay

Intracellularg

lutathione

levels

HFF

andHepG2cells

[33]

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

HSG

cells

[34]

CAsa

ssay

Indu

cedad

ose-depend

entincreaseo

faberrantcells

V79

cells

[41]

Topo

IIactiv

ityassay

Inhibitio

nof

topo

isomeraseII

Croton

oilind

uced

skin

carcinogenesis

Inhibitio

nof

thep

roliferationassociated

genesc

-Myc

and

H-ras

andantia

poptoticgene

Bcl2alon

gwith

upregu

latio

nof

proapo

ptoticgenesB

axp53and

activ

ecaspase-3

Swiss

mice

[36]

DMBA

TPA

-indu

ced

carcinogenesisin

murines

kin

Declin

edof

hyperplasia

epiderm

alODCactiv

ityand

proteinexpressio

nof

iNOSCO

X-2andsecretionof

proinfl

ammatorycytokines

Swiss

mice

[42]

TUNEL

assay

Upregulationof

p53expressio

nwith

acon

comitant

increase

inp21W

AF1

levelsin

epidermalcells

indicatin

gindu

ctionof

damagetotheD

NA

Flow

cytometric

analysis

cDNAarrayanalysisshow

edthateugeno

lcaused

deregu

latio

nof

theE

2Ffamily

oftranscrip

tionfactors

WM1205Lu

cells

[24]

TUNEL

assay

Indu

cesa

poptosisin

melanom

atum

ors

WM1205Lu

cells

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

SK-O

V-3XF

-498and

HCT

-15

cells

[76]

MurineE

hrlichascitesa

ndsolid

carcinom

amod

els

Inhibitthe

grow

thof

Ehrlich

ascites

BALB

cmice

[44]

DPP

Hassay

Antioxidatio

nactiv

ityHepG2cells

[22]

Western

blot

analysis

Decreased

thep

rotein

expressio

nof

BSPin

aconcentration-depend

entm

anner

Hum

andentalpu

lpcells

[35]

DPP

Hassay

Antioxidant

effect

Raw2647cells

[43]

VLirr

adiatio

nMTT

assay

Generationof

eugeno

lradicals

HSG

andHGFcells

[36]

Laserc

ytom

eter

Generationof

ROS

ESRanalysis

Prod

uced

phenoxylradicals

HSG

andHGFcells

[37]

Superoxide

generatio

nspectro

photom

eter

Stim

ulationthep

rodu

ctionof

superoxide

(O2

minus)

Neutro

philsmdashmaleg

uineap

ig[40]

BioMed Research International 5

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Met

hyle

ugen

ol

(4-a

llyl-1

2-d

imet

hoxy

benz

ene)

MeO

OM

e

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

MTT

assay

DPP

Hassay

Cytotoxica

ctivity

Antioxidativ

eproperties

HL-60H

epG-2W

M266-4

SK-M

el-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elAand

GR-Melcells

[1648]

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

Cornoilgavage

Carcinogenicactiv

ityisbasedon

increasedincidences

ofhepatocellu

lara

deno

mahepatocellu

larc

arcino

maand

hepatocellu

lara

deno

mao

rcarcino

ma(

combined)

F344

NratsandB6

C3F1

mice

[50]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

Isoe

ugen

ol

(4-p

rope

nyl-2

-met

hoxy

phen

ol)

OH

CH3O

MTT

assay

Cytotoxica

ctivity

HSG

cells

[29]

DPP

Hradical-scaveng

ing

activ

ityCormationof

dimers

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

[39]

6 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

H3CO

H3CO

Met

hyl-i

soeu

geno

l (4

-ally

l-12

-dim

etho

xybe

nzen

e)MTT

assay

Inhibitio

nof

cellproliferatio

nWM266-4SK

-Mel-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elA

andGR-Melcells

[16]

HO

-Hyd

roxy

met

hyle

ugen

ol (120572

-eth

enyl

-34

-di

met

hoxy

benz

enem

etha

nol)

OCH

3

1998400

CH3O

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

BioMed Research International 7

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

OO

Safro

le (4

-ally

l-12

-di

met

hoxy

benz

ene

(met

hyle

ugen

ol))

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

Trypan-bluee

xclusio

nassay

Potentialcytotoxiceffects

Rath

epatocytes

andSC

C-4cells

[4751

54]

Flow

cytometric

assay

Indu

ctionof

apop

tosis

ofcells

byinvolvem

ento

fmito

chon

dria-a

ndcaspase-depend

entsignalp

athw

ay

SCC-

4cells

[51]

Western

blottin

ganalysis

Upregulationof

thep

rotein

expressio

nof

BaxandBidand

downregulationof

thep

rotein

levelsof

Bcl-2

(upregulation

ofther

atio

ofBa

xBc

l-2)resulting

incytochromec

release

prom

oted

Apaf-1levelandsequ

entia

lactivationof

caspase-9andcaspase-3in

atim

e-depend

entm

anner

Real-timeP

CRmRN

Aexpressio

nsof

caspases

38and9

MTT

assay

Cytotoxice

ffect

Hum

anBM

Fs[52]

Western

blot

analysis

Activ

ateN

F-120581Bexpressio

nthatmay

beinvolved

inthe

pathogenesisof

OSF

andmediatedby

ERKactiv

ationand

COX-

2sig

naltransdu

ctionpathway

Fura-2

asap

robe

assay

Indu

ceda[

Ca2+] 119894increase

bycausingCa

2+releasefrom

the

endo

plasmicretic

ulum

inap

hospho

lipaseC

-and

protein

kinase

C-independ

entfashion

andby

indu

cing

Ca2+influ

xPC

3cells

[53]

Com

etassay(D

API)staining

Indu

cedapop

tosis

(chrom

atin

cond

ensatio

n)andDNA

damage

HL-60

cells

[51]

Flow

cytometric

analysis

Increasedthep

rodu

ctionof

reactiv

eoxygenspecies(RO

S)andCa

2+andredu

cedthem

itochon

drialm

embrane

potential

Western

blottin

ganalysisconfocallaser

microscop

y

Prom

oted

thee

xpressionof

glucose-regu

latedprotein78

(GRP

78)grow

tharrest-

andDNAdamage-indu

cibleg

ene

153(G

ADD153)and

activ

atingtranscrip

tionfactor

6120572(ATF

-6120572)

Flow

cytometric

analysis

Prom

oted

thelevels

ofCD

11bandMac-3

thatmight

bethe

reason

forp

romotingthea

ctivity

ofph

agocytosis

redu

cedthec

ellp

opulationsuch

asCD

3andCD

19cells

NKcells

[58]

Ames

test

Mutagenicity

activ

itySalm

onellaTA

98[59]

8 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Safro

le-2

-3-o

xide

4-(2

3-e

poxy

prop

yl)-

12-

(met

hyle

nedi

oxy)

OOO

MTT

assay

Prod

uced

toxicityin

cells

inad

ose-

andtim

e-depend

ent

manner

HepG2cells

FVBmice

[56]

Com

etassay

Sign

ificant

dose-dependent

increase

inthed

egreeo

fDNA

(strandbreaks)

Cytotoxico

rgenotoxiceffectin

vivomdashipC

ometassay

Increase

inmeanCom

ettailmom

entinperip

heralblood

leuk

ocytes

andin

thefrequ

ency

ofmicronu

cleated

retic

ulocytes

HepG2cells

FVBmice

TUNEL

assay

Activ

ityof

caspases

38and9

A549cells

[58]

Myr

istic

in(5

-ally

l-3-m

etho

xy-1

2-

met

hyle

nedi

oxyb

enze

ne)

O

OOWestern

blot

assay

Cleavageso

fPARP

accom

panied

byan

accumulationof

cytochromec

andby

thea

ctivationof

caspase-3

SK-N

-SHcells

[60]

Estr

agol

e(1

-ally

l-4-m

etho

xybe

nzen

e)

OM

e

Indu

ctionof

GST

andQR

Indu

ctionof

GST

andQRin

mou

selivers

Four

strainso

fmou

se

AJO

laHsdC

57BL

6NHsd

BALB

cAnN

Hsdand

CBAJC

rHsd

[61]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

PainResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

ToxicologyJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Emergency Medicine InternationalHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Autoimmune Diseases

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ScientificaHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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of

Page 3: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 3

Table1Essentialoilph

enylprop

anoids

with

antitum

oralactiv

ity

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Euge

nol

(4-a

llyl-2

-met

hoxy

phen

ol)

MeO

OH

Anaph

ylaxismod

elAp

optotic

manifestations

viap

hospho

-ser

15-p53

into

mito

chon

dria

Mastcells

[11]

Skin

carcinogenesismod

elInhibitio

nof

thep

roliferationassociated

genesc

-Myc

and

H-ras

andantia

poptoticgene

Bcl2alon

gwith

upregu

latio

nof

proapo

ptoticgenesB

axp53and

activ

ecaspase-3

Mice

[12]

Trypan-bluea

ssays

Cytotoxica

ctivity

B16-F10Sbcl2

WM3211

WM98-1andWM1205Lu

PC-

3hu

man

ging

ivalfib

roblasts

oral

mucosaln

eutro

philsmdashmale

guinea

pigrath

epatocytes

cells

[1415

233233

4849]

Mela

nomac

ellproliferation

Deregulationof

theE

2Ffamily

oftranscrip

tionfactors

transcrip

tionalactivity

ofE2

F1Sbcl2

WM3211W

M98-1and

WM1205Lu

cells

[15]

Flow

cytometry

analysis

Cytotoxica

ctivity

P-815K-

562CE

Mand

MCF

-7cells

[13]

VLirr

adiatio

ntim

eAntioxidativ

ereactivity

HSG

HSC

-2and

HL-60

cells

[17]

MTT

assay

Cytotoxica

ctivity

B16-F10P-815K-

562CE

M

MCF

-7M

CF-7

gemH

eLa

DU-145K

BHSG

hum

andental

pulpm

urinep

erito

neal

macroph

ages

HL-60H

epG-2

B16cells

[1319ndash

2225ndash

293845

4648]

DPP

Hassay

Antioxidativ

eactivity

Caco-2c

ellsandVH10

fibroblasts

[18]

Flow

cytometer

analysis

Enhanced

thea

ccum

ulationof

cells

intheS

andG2M

phasew

hich

may

beun

ableto

divide

HeLac

ells

DAPI

staining

Increase

inthen

umbero

fapo

ptoticcells

Invitro

hemolyticactiv

ityHem

olyticactiv

ityHum

anerythrocytes

[19]

Caspase-3colorim

etric

assay

Indu

cecaspase3

-mediatedapop

tosis

RT-PCR

Anticancera

ctivities

viaa

poptosisindu

ctionand

anti-inflammatorydo

wnregulationof

Bcl-2

COX-

2and

IL-1120573

RT-PCR

Dow

nregulated

thee

xpressionof

Bcl-2

COX-

2andIL-120573

HeLac

ells

[20]

Flow

cytometer

analysis

Increasedpo

pulatio

nof

cells

G2M

phaseb

y45-fold

PC-3

cells

[24]

Western

blot

andRT

-PCR

analysis

Redu

cedexpressio

nof

antia

poptoticproteinBc

l-2and

enhanced

expressio

nof

proapo

ptoticproteinBa

xDPP

Hradical-scaveng

ing

activ

ityFo

rmationof

dimers

HSG

cells

[25]

ELISA

Redu

cedthen

icotine-indu

cedRO

SNOgeneratio

nand

iNOSIIexpression

Murinep

erito

nealmacroph

ages

[27]

4 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectro

photom

etric

analysis

Increase

inLD

Hrelease

DU-145

andKB

cells

[28]

ESRanalysis

Activ

ityof

thep

rodu

ctionof

phenoxylradicalswith

most

efficiently

scavengedreactiv

eoxygen

HSG

cells

[29]

Laserc

ytom

etry

analysis

Prod

uctio

nof

ROSindu

cedby

VL-irr

adiatedissig

nificantly

affectedby

pH

Antioxidantsp

rodu

ction

Prod

uced

antio

xidantsinalkalin

esolutions

Hum

ansalivaryglandandoral

squamou

scells

[30]

DPP

Hassay

Apop

tosis-in

ducing

effect

HGFandHSG

cells

[31]

TBAanalysislip

idoxidation

Depletedintracellularg

lutathioneprotectcells

from

the

genetic

attack

ofreactiv

eoxygenspeciesv

iainhibitio

nof

xanthine

oxidasea

ctivity

andlip

idperoxidatio

nOralm

ucosalfib

roblasts

[32]

ATPassay

Decreased

cellu

larA

TPlevelinac

oncentratio

n-and

time-depend

entm

anner

NRassay

Intracellularg

lutathione

levels

HFF

andHepG2cells

[33]

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

HSG

cells

[34]

CAsa

ssay

Indu

cedad

ose-depend

entincreaseo

faberrantcells

V79

cells

[41]

Topo

IIactiv

ityassay

Inhibitio

nof

topo

isomeraseII

Croton

oilind

uced

skin

carcinogenesis

Inhibitio

nof

thep

roliferationassociated

genesc

-Myc

and

H-ras

andantia

poptoticgene

Bcl2alon

gwith

upregu

latio

nof

proapo

ptoticgenesB

axp53and

activ

ecaspase-3

Swiss

mice

[36]

DMBA

TPA

-indu

ced

carcinogenesisin

murines

kin

Declin

edof

hyperplasia

epiderm

alODCactiv

ityand

proteinexpressio

nof

iNOSCO

X-2andsecretionof

proinfl

ammatorycytokines

Swiss

mice

[42]

TUNEL

assay

Upregulationof

p53expressio

nwith

acon

comitant

increase

inp21W

AF1

levelsin

epidermalcells

indicatin

gindu

ctionof

damagetotheD

NA

Flow

cytometric

analysis

cDNAarrayanalysisshow

edthateugeno

lcaused

deregu

latio

nof

theE

2Ffamily

oftranscrip

tionfactors

WM1205Lu

cells

[24]

TUNEL

assay

Indu

cesa

poptosisin

melanom

atum

ors

WM1205Lu

cells

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

SK-O

V-3XF

-498and

HCT

-15

cells

[76]

MurineE

hrlichascitesa

ndsolid

carcinom

amod

els

Inhibitthe

grow

thof

Ehrlich

ascites

BALB

cmice

[44]

DPP

Hassay

Antioxidatio

nactiv

ityHepG2cells

[22]

Western

blot

analysis

Decreased

thep

rotein

expressio

nof

BSPin

aconcentration-depend

entm

anner

Hum

andentalpu

lpcells

[35]

DPP

Hassay

Antioxidant

effect

Raw2647cells

[43]

VLirr

adiatio

nMTT

assay

Generationof

eugeno

lradicals

HSG

andHGFcells

[36]

Laserc

ytom

eter

Generationof

ROS

ESRanalysis

Prod

uced

phenoxylradicals

HSG

andHGFcells

[37]

Superoxide

generatio

nspectro

photom

eter

Stim

ulationthep

rodu

ctionof

superoxide

(O2

minus)

Neutro

philsmdashmaleg

uineap

ig[40]

BioMed Research International 5

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Met

hyle

ugen

ol

(4-a

llyl-1

2-d

imet

hoxy

benz

ene)

MeO

OM

e

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

MTT

assay

DPP

Hassay

Cytotoxica

ctivity

Antioxidativ

eproperties

HL-60H

epG-2W

M266-4

SK-M

el-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elAand

GR-Melcells

[1648]

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

Cornoilgavage

Carcinogenicactiv

ityisbasedon

increasedincidences

ofhepatocellu

lara

deno

mahepatocellu

larc

arcino

maand

hepatocellu

lara

deno

mao

rcarcino

ma(

combined)

F344

NratsandB6

C3F1

mice

[50]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

Isoe

ugen

ol

(4-p

rope

nyl-2

-met

hoxy

phen

ol)

OH

CH3O

MTT

assay

Cytotoxica

ctivity

HSG

cells

[29]

DPP

Hradical-scaveng

ing

activ

ityCormationof

dimers

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

[39]

6 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

H3CO

H3CO

Met

hyl-i

soeu

geno

l (4

-ally

l-12

-dim

etho

xybe

nzen

e)MTT

assay

Inhibitio

nof

cellproliferatio

nWM266-4SK

-Mel-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elA

andGR-Melcells

[16]

HO

-Hyd

roxy

met

hyle

ugen

ol (120572

-eth

enyl

-34

-di

met

hoxy

benz

enem

etha

nol)

OCH

3

1998400

CH3O

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

BioMed Research International 7

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

OO

Safro

le (4

-ally

l-12

-di

met

hoxy

benz

ene

(met

hyle

ugen

ol))

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

Trypan-bluee

xclusio

nassay

Potentialcytotoxiceffects

Rath

epatocytes

andSC

C-4cells

[4751

54]

Flow

cytometric

assay

Indu

ctionof

apop

tosis

ofcells

byinvolvem

ento

fmito

chon

dria-a

ndcaspase-depend

entsignalp

athw

ay

SCC-

4cells

[51]

Western

blottin

ganalysis

Upregulationof

thep

rotein

expressio

nof

BaxandBidand

downregulationof

thep

rotein

levelsof

Bcl-2

(upregulation

ofther

atio

ofBa

xBc

l-2)resulting

incytochromec

release

prom

oted

Apaf-1levelandsequ

entia

lactivationof

caspase-9andcaspase-3in

atim

e-depend

entm

anner

Real-timeP

CRmRN

Aexpressio

nsof

caspases

38and9

MTT

assay

Cytotoxice

ffect

Hum

anBM

Fs[52]

Western

blot

analysis

Activ

ateN

F-120581Bexpressio

nthatmay

beinvolved

inthe

pathogenesisof

OSF

andmediatedby

ERKactiv

ationand

COX-

2sig

naltransdu

ctionpathway

Fura-2

asap

robe

assay

Indu

ceda[

Ca2+] 119894increase

bycausingCa

2+releasefrom

the

endo

plasmicretic

ulum

inap

hospho

lipaseC

-and

protein

kinase

C-independ

entfashion

andby

indu

cing

Ca2+influ

xPC

3cells

[53]

Com

etassay(D

API)staining

Indu

cedapop

tosis

(chrom

atin

cond

ensatio

n)andDNA

damage

HL-60

cells

[51]

Flow

cytometric

analysis

Increasedthep

rodu

ctionof

reactiv

eoxygenspecies(RO

S)andCa

2+andredu

cedthem

itochon

drialm

embrane

potential

Western

blottin

ganalysisconfocallaser

microscop

y

Prom

oted

thee

xpressionof

glucose-regu

latedprotein78

(GRP

78)grow

tharrest-

andDNAdamage-indu

cibleg

ene

153(G

ADD153)and

activ

atingtranscrip

tionfactor

6120572(ATF

-6120572)

Flow

cytometric

analysis

Prom

oted

thelevels

ofCD

11bandMac-3

thatmight

bethe

reason

forp

romotingthea

ctivity

ofph

agocytosis

redu

cedthec

ellp

opulationsuch

asCD

3andCD

19cells

NKcells

[58]

Ames

test

Mutagenicity

activ

itySalm

onellaTA

98[59]

8 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Safro

le-2

-3-o

xide

4-(2

3-e

poxy

prop

yl)-

12-

(met

hyle

nedi

oxy)

OOO

MTT

assay

Prod

uced

toxicityin

cells

inad

ose-

andtim

e-depend

ent

manner

HepG2cells

FVBmice

[56]

Com

etassay

Sign

ificant

dose-dependent

increase

inthed

egreeo

fDNA

(strandbreaks)

Cytotoxico

rgenotoxiceffectin

vivomdashipC

ometassay

Increase

inmeanCom

ettailmom

entinperip

heralblood

leuk

ocytes

andin

thefrequ

ency

ofmicronu

cleated

retic

ulocytes

HepG2cells

FVBmice

TUNEL

assay

Activ

ityof

caspases

38and9

A549cells

[58]

Myr

istic

in(5

-ally

l-3-m

etho

xy-1

2-

met

hyle

nedi

oxyb

enze

ne)

O

OOWestern

blot

assay

Cleavageso

fPARP

accom

panied

byan

accumulationof

cytochromec

andby

thea

ctivationof

caspase-3

SK-N

-SHcells

[60]

Estr

agol

e(1

-ally

l-4-m

etho

xybe

nzen

e)

OM

e

Indu

ctionof

GST

andQR

Indu

ctionof

GST

andQRin

mou

selivers

Four

strainso

fmou

se

AJO

laHsdC

57BL

6NHsd

BALB

cAnN

Hsdand

CBAJC

rHsd

[61]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

PainResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

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Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

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Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Autoimmune Diseases

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Pharmaceutics

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MEDIATORSINFLAMMATION

of

Page 4: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

4 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectro

photom

etric

analysis

Increase

inLD

Hrelease

DU-145

andKB

cells

[28]

ESRanalysis

Activ

ityof

thep

rodu

ctionof

phenoxylradicalswith

most

efficiently

scavengedreactiv

eoxygen

HSG

cells

[29]

Laserc

ytom

etry

analysis

Prod

uctio

nof

ROSindu

cedby

VL-irr

adiatedissig

nificantly

affectedby

pH

Antioxidantsp

rodu

ction

Prod

uced

antio

xidantsinalkalin

esolutions

Hum

ansalivaryglandandoral

squamou

scells

[30]

DPP

Hassay

Apop

tosis-in

ducing

effect

HGFandHSG

cells

[31]

TBAanalysislip

idoxidation

Depletedintracellularg

lutathioneprotectcells

from

the

genetic

attack

ofreactiv

eoxygenspeciesv

iainhibitio

nof

xanthine

oxidasea

ctivity

andlip

idperoxidatio

nOralm

ucosalfib

roblasts

[32]

ATPassay

Decreased

cellu

larA

TPlevelinac

oncentratio

n-and

time-depend

entm

anner

NRassay

Intracellularg

lutathione

levels

HFF

andHepG2cells

[33]

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

HSG

cells

[34]

CAsa

ssay

Indu

cedad

ose-depend

entincreaseo

faberrantcells

V79

cells

[41]

Topo

IIactiv

ityassay

Inhibitio

nof

topo

isomeraseII

Croton

oilind

uced

skin

carcinogenesis

Inhibitio

nof

thep

roliferationassociated

genesc

-Myc

and

H-ras

andantia

poptoticgene

Bcl2alon

gwith

upregu

latio

nof

proapo

ptoticgenesB

axp53and

activ

ecaspase-3

Swiss

mice

[36]

DMBA

TPA

-indu

ced

carcinogenesisin

murines

kin

Declin

edof

hyperplasia

epiderm

alODCactiv

ityand

proteinexpressio

nof

iNOSCO

X-2andsecretionof

proinfl

ammatorycytokines

Swiss

mice

[42]

TUNEL

assay

Upregulationof

p53expressio

nwith

acon

comitant

increase

inp21W

AF1

levelsin

epidermalcells

indicatin

gindu

ctionof

damagetotheD

NA

Flow

cytometric

analysis

cDNAarrayanalysisshow

edthateugeno

lcaused

deregu

latio

nof

theE

2Ffamily

oftranscrip

tionfactors

WM1205Lu

cells

[24]

TUNEL

assay

Indu

cesa

poptosisin

melanom

atum

ors

WM1205Lu

cells

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

SK-O

V-3XF

-498and

HCT

-15

cells

[76]

MurineE

hrlichascitesa

ndsolid

carcinom

amod

els

Inhibitthe

grow

thof

Ehrlich

ascites

BALB

cmice

[44]

DPP

Hassay

Antioxidatio

nactiv

ityHepG2cells

[22]

Western

blot

analysis

Decreased

thep

rotein

expressio

nof

BSPin

aconcentration-depend

entm

anner

Hum

andentalpu

lpcells

[35]

DPP

Hassay

Antioxidant

effect

Raw2647cells

[43]

VLirr

adiatio

nMTT

assay

Generationof

eugeno

lradicals

HSG

andHGFcells

[36]

Laserc

ytom

eter

Generationof

ROS

ESRanalysis

Prod

uced

phenoxylradicals

HSG

andHGFcells

[37]

Superoxide

generatio

nspectro

photom

eter

Stim

ulationthep

rodu

ctionof

superoxide

(O2

minus)

Neutro

philsmdashmaleg

uineap

ig[40]

BioMed Research International 5

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Met

hyle

ugen

ol

(4-a

llyl-1

2-d

imet

hoxy

benz

ene)

MeO

OM

e

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

MTT

assay

DPP

Hassay

Cytotoxica

ctivity

Antioxidativ

eproperties

HL-60H

epG-2W

M266-4

SK-M

el-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elAand

GR-Melcells

[1648]

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

Cornoilgavage

Carcinogenicactiv

ityisbasedon

increasedincidences

ofhepatocellu

lara

deno

mahepatocellu

larc

arcino

maand

hepatocellu

lara

deno

mao

rcarcino

ma(

combined)

F344

NratsandB6

C3F1

mice

[50]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

Isoe

ugen

ol

(4-p

rope

nyl-2

-met

hoxy

phen

ol)

OH

CH3O

MTT

assay

Cytotoxica

ctivity

HSG

cells

[29]

DPP

Hradical-scaveng

ing

activ

ityCormationof

dimers

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

[39]

6 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

H3CO

H3CO

Met

hyl-i

soeu

geno

l (4

-ally

l-12

-dim

etho

xybe

nzen

e)MTT

assay

Inhibitio

nof

cellproliferatio

nWM266-4SK

-Mel-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elA

andGR-Melcells

[16]

HO

-Hyd

roxy

met

hyle

ugen

ol (120572

-eth

enyl

-34

-di

met

hoxy

benz

enem

etha

nol)

OCH

3

1998400

CH3O

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

BioMed Research International 7

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

OO

Safro

le (4

-ally

l-12

-di

met

hoxy

benz

ene

(met

hyle

ugen

ol))

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

Trypan-bluee

xclusio

nassay

Potentialcytotoxiceffects

Rath

epatocytes

andSC

C-4cells

[4751

54]

Flow

cytometric

assay

Indu

ctionof

apop

tosis

ofcells

byinvolvem

ento

fmito

chon

dria-a

ndcaspase-depend

entsignalp

athw

ay

SCC-

4cells

[51]

Western

blottin

ganalysis

Upregulationof

thep

rotein

expressio

nof

BaxandBidand

downregulationof

thep

rotein

levelsof

Bcl-2

(upregulation

ofther

atio

ofBa

xBc

l-2)resulting

incytochromec

release

prom

oted

Apaf-1levelandsequ

entia

lactivationof

caspase-9andcaspase-3in

atim

e-depend

entm

anner

Real-timeP

CRmRN

Aexpressio

nsof

caspases

38and9

MTT

assay

Cytotoxice

ffect

Hum

anBM

Fs[52]

Western

blot

analysis

Activ

ateN

F-120581Bexpressio

nthatmay

beinvolved

inthe

pathogenesisof

OSF

andmediatedby

ERKactiv

ationand

COX-

2sig

naltransdu

ctionpathway

Fura-2

asap

robe

assay

Indu

ceda[

Ca2+] 119894increase

bycausingCa

2+releasefrom

the

endo

plasmicretic

ulum

inap

hospho

lipaseC

-and

protein

kinase

C-independ

entfashion

andby

indu

cing

Ca2+influ

xPC

3cells

[53]

Com

etassay(D

API)staining

Indu

cedapop

tosis

(chrom

atin

cond

ensatio

n)andDNA

damage

HL-60

cells

[51]

Flow

cytometric

analysis

Increasedthep

rodu

ctionof

reactiv

eoxygenspecies(RO

S)andCa

2+andredu

cedthem

itochon

drialm

embrane

potential

Western

blottin

ganalysisconfocallaser

microscop

y

Prom

oted

thee

xpressionof

glucose-regu

latedprotein78

(GRP

78)grow

tharrest-

andDNAdamage-indu

cibleg

ene

153(G

ADD153)and

activ

atingtranscrip

tionfactor

6120572(ATF

-6120572)

Flow

cytometric

analysis

Prom

oted

thelevels

ofCD

11bandMac-3

thatmight

bethe

reason

forp

romotingthea

ctivity

ofph

agocytosis

redu

cedthec

ellp

opulationsuch

asCD

3andCD

19cells

NKcells

[58]

Ames

test

Mutagenicity

activ

itySalm

onellaTA

98[59]

8 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Safro

le-2

-3-o

xide

4-(2

3-e

poxy

prop

yl)-

12-

(met

hyle

nedi

oxy)

OOO

MTT

assay

Prod

uced

toxicityin

cells

inad

ose-

andtim

e-depend

ent

manner

HepG2cells

FVBmice

[56]

Com

etassay

Sign

ificant

dose-dependent

increase

inthed

egreeo

fDNA

(strandbreaks)

Cytotoxico

rgenotoxiceffectin

vivomdashipC

ometassay

Increase

inmeanCom

ettailmom

entinperip

heralblood

leuk

ocytes

andin

thefrequ

ency

ofmicronu

cleated

retic

ulocytes

HepG2cells

FVBmice

TUNEL

assay

Activ

ityof

caspases

38and9

A549cells

[58]

Myr

istic

in(5

-ally

l-3-m

etho

xy-1

2-

met

hyle

nedi

oxyb

enze

ne)

O

OOWestern

blot

assay

Cleavageso

fPARP

accom

panied

byan

accumulationof

cytochromec

andby

thea

ctivationof

caspase-3

SK-N

-SHcells

[60]

Estr

agol

e(1

-ally

l-4-m

etho

xybe

nzen

e)

OM

e

Indu

ctionof

GST

andQR

Indu

ctionof

GST

andQRin

mou

selivers

Four

strainso

fmou

se

AJO

laHsdC

57BL

6NHsd

BALB

cAnN

Hsdand

CBAJC

rHsd

[61]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 5: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 5

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Met

hyle

ugen

ol

(4-a

llyl-1

2-d

imet

hoxy

benz

ene)

MeO

OM

e

DPP

Hassay

Antioxidativ

eproperties

HL-60

andHepG-2

cells

[48]

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

MTT

assay

DPP

Hassay

Cytotoxica

ctivity

Antioxidativ

eproperties

HL-60H

epG-2W

M266-4

SK-M

el-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elAand

GR-Melcells

[1648]

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

Cornoilgavage

Carcinogenicactiv

ityisbasedon

increasedincidences

ofhepatocellu

lara

deno

mahepatocellu

larc

arcino

maand

hepatocellu

lara

deno

mao

rcarcino

ma(

combined)

F344

NratsandB6

C3F1

mice

[50]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

Isoe

ugen

ol

(4-p

rope

nyl-2

-met

hoxy

phen

ol)

OH

CH3O

MTT

assay

Cytotoxica

ctivity

HSG

cells

[29]

DPP

Hradical-scaveng

ing

activ

ityCormationof

dimers

Dichlorofl

uoresceinassay

Redu

ctionin

theintracellu

larlevelof

GSH

[39]

6 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

H3CO

H3CO

Met

hyl-i

soeu

geno

l (4

-ally

l-12

-dim

etho

xybe

nzen

e)MTT

assay

Inhibitio

nof

cellproliferatio

nWM266-4SK

-Mel-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elA

andGR-Melcells

[16]

HO

-Hyd

roxy

met

hyle

ugen

ol (120572

-eth

enyl

-34

-di

met

hoxy

benz

enem

etha

nol)

OCH

3

1998400

CH3O

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

BioMed Research International 7

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

OO

Safro

le (4

-ally

l-12

-di

met

hoxy

benz

ene

(met

hyle

ugen

ol))

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

Trypan-bluee

xclusio

nassay

Potentialcytotoxiceffects

Rath

epatocytes

andSC

C-4cells

[4751

54]

Flow

cytometric

assay

Indu

ctionof

apop

tosis

ofcells

byinvolvem

ento

fmito

chon

dria-a

ndcaspase-depend

entsignalp

athw

ay

SCC-

4cells

[51]

Western

blottin

ganalysis

Upregulationof

thep

rotein

expressio

nof

BaxandBidand

downregulationof

thep

rotein

levelsof

Bcl-2

(upregulation

ofther

atio

ofBa

xBc

l-2)resulting

incytochromec

release

prom

oted

Apaf-1levelandsequ

entia

lactivationof

caspase-9andcaspase-3in

atim

e-depend

entm

anner

Real-timeP

CRmRN

Aexpressio

nsof

caspases

38and9

MTT

assay

Cytotoxice

ffect

Hum

anBM

Fs[52]

Western

blot

analysis

Activ

ateN

F-120581Bexpressio

nthatmay

beinvolved

inthe

pathogenesisof

OSF

andmediatedby

ERKactiv

ationand

COX-

2sig

naltransdu

ctionpathway

Fura-2

asap

robe

assay

Indu

ceda[

Ca2+] 119894increase

bycausingCa

2+releasefrom

the

endo

plasmicretic

ulum

inap

hospho

lipaseC

-and

protein

kinase

C-independ

entfashion

andby

indu

cing

Ca2+influ

xPC

3cells

[53]

Com

etassay(D

API)staining

Indu

cedapop

tosis

(chrom

atin

cond

ensatio

n)andDNA

damage

HL-60

cells

[51]

Flow

cytometric

analysis

Increasedthep

rodu

ctionof

reactiv

eoxygenspecies(RO

S)andCa

2+andredu

cedthem

itochon

drialm

embrane

potential

Western

blottin

ganalysisconfocallaser

microscop

y

Prom

oted

thee

xpressionof

glucose-regu

latedprotein78

(GRP

78)grow

tharrest-

andDNAdamage-indu

cibleg

ene

153(G

ADD153)and

activ

atingtranscrip

tionfactor

6120572(ATF

-6120572)

Flow

cytometric

analysis

Prom

oted

thelevels

ofCD

11bandMac-3

thatmight

bethe

reason

forp

romotingthea

ctivity

ofph

agocytosis

redu

cedthec

ellp

opulationsuch

asCD

3andCD

19cells

NKcells

[58]

Ames

test

Mutagenicity

activ

itySalm

onellaTA

98[59]

8 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Safro

le-2

-3-o

xide

4-(2

3-e

poxy

prop

yl)-

12-

(met

hyle

nedi

oxy)

OOO

MTT

assay

Prod

uced

toxicityin

cells

inad

ose-

andtim

e-depend

ent

manner

HepG2cells

FVBmice

[56]

Com

etassay

Sign

ificant

dose-dependent

increase

inthed

egreeo

fDNA

(strandbreaks)

Cytotoxico

rgenotoxiceffectin

vivomdashipC

ometassay

Increase

inmeanCom

ettailmom

entinperip

heralblood

leuk

ocytes

andin

thefrequ

ency

ofmicronu

cleated

retic

ulocytes

HepG2cells

FVBmice

TUNEL

assay

Activ

ityof

caspases

38and9

A549cells

[58]

Myr

istic

in(5

-ally

l-3-m

etho

xy-1

2-

met

hyle

nedi

oxyb

enze

ne)

O

OOWestern

blot

assay

Cleavageso

fPARP

accom

panied

byan

accumulationof

cytochromec

andby

thea

ctivationof

caspase-3

SK-N

-SHcells

[60]

Estr

agol

e(1

-ally

l-4-m

etho

xybe

nzen

e)

OM

e

Indu

ctionof

GST

andQR

Indu

ctionof

GST

andQRin

mou

selivers

Four

strainso

fmou

se

AJO

laHsdC

57BL

6NHsd

BALB

cAnN

Hsdand

CBAJC

rHsd

[61]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

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Hindawi Publishing Corporationhttpwwwhindawicom

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ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

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Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

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Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

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Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

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Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Autoimmune Diseases

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ScientificaHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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of

Page 6: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

6 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

H3CO

H3CO

Met

hyl-i

soeu

geno

l (4

-ally

l-12

-dim

etho

xybe

nzen

e)MTT

assay

Inhibitio

nof

cellproliferatio

nWM266-4SK

-Mel-28LC

P-Mel

LCM-M

elPN

P-Mel

CN-M

elA

andGR-Melcells

[16]

HO

-Hyd

roxy

met

hyle

ugen

ol (120572

-eth

enyl

-34

-di

met

hoxy

benz

enem

etha

nol)

OCH

3

1998400

CH3O

WST

assay

SRBassay

Cytotoxica

ndgeno

toxicp

roperties

V79

cells

[49]

BioMed Research International 7

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

OO

Safro

le (4

-ally

l-12

-di

met

hoxy

benz

ene

(met

hyle

ugen

ol))

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

Trypan-bluee

xclusio

nassay

Potentialcytotoxiceffects

Rath

epatocytes

andSC

C-4cells

[4751

54]

Flow

cytometric

assay

Indu

ctionof

apop

tosis

ofcells

byinvolvem

ento

fmito

chon

dria-a

ndcaspase-depend

entsignalp

athw

ay

SCC-

4cells

[51]

Western

blottin

ganalysis

Upregulationof

thep

rotein

expressio

nof

BaxandBidand

downregulationof

thep

rotein

levelsof

Bcl-2

(upregulation

ofther

atio

ofBa

xBc

l-2)resulting

incytochromec

release

prom

oted

Apaf-1levelandsequ

entia

lactivationof

caspase-9andcaspase-3in

atim

e-depend

entm

anner

Real-timeP

CRmRN

Aexpressio

nsof

caspases

38and9

MTT

assay

Cytotoxice

ffect

Hum

anBM

Fs[52]

Western

blot

analysis

Activ

ateN

F-120581Bexpressio

nthatmay

beinvolved

inthe

pathogenesisof

OSF

andmediatedby

ERKactiv

ationand

COX-

2sig

naltransdu

ctionpathway

Fura-2

asap

robe

assay

Indu

ceda[

Ca2+] 119894increase

bycausingCa

2+releasefrom

the

endo

plasmicretic

ulum

inap

hospho

lipaseC

-and

protein

kinase

C-independ

entfashion

andby

indu

cing

Ca2+influ

xPC

3cells

[53]

Com

etassay(D

API)staining

Indu

cedapop

tosis

(chrom

atin

cond

ensatio

n)andDNA

damage

HL-60

cells

[51]

Flow

cytometric

analysis

Increasedthep

rodu

ctionof

reactiv

eoxygenspecies(RO

S)andCa

2+andredu

cedthem

itochon

drialm

embrane

potential

Western

blottin

ganalysisconfocallaser

microscop

y

Prom

oted

thee

xpressionof

glucose-regu

latedprotein78

(GRP

78)grow

tharrest-

andDNAdamage-indu

cibleg

ene

153(G

ADD153)and

activ

atingtranscrip

tionfactor

6120572(ATF

-6120572)

Flow

cytometric

analysis

Prom

oted

thelevels

ofCD

11bandMac-3

thatmight

bethe

reason

forp

romotingthea

ctivity

ofph

agocytosis

redu

cedthec

ellp

opulationsuch

asCD

3andCD

19cells

NKcells

[58]

Ames

test

Mutagenicity

activ

itySalm

onellaTA

98[59]

8 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Safro

le-2

-3-o

xide

4-(2

3-e

poxy

prop

yl)-

12-

(met

hyle

nedi

oxy)

OOO

MTT

assay

Prod

uced

toxicityin

cells

inad

ose-

andtim

e-depend

ent

manner

HepG2cells

FVBmice

[56]

Com

etassay

Sign

ificant

dose-dependent

increase

inthed

egreeo

fDNA

(strandbreaks)

Cytotoxico

rgenotoxiceffectin

vivomdashipC

ometassay

Increase

inmeanCom

ettailmom

entinperip

heralblood

leuk

ocytes

andin

thefrequ

ency

ofmicronu

cleated

retic

ulocytes

HepG2cells

FVBmice

TUNEL

assay

Activ

ityof

caspases

38and9

A549cells

[58]

Myr

istic

in(5

-ally

l-3-m

etho

xy-1

2-

met

hyle

nedi

oxyb

enze

ne)

O

OOWestern

blot

assay

Cleavageso

fPARP

accom

panied

byan

accumulationof

cytochromec

andby

thea

ctivationof

caspase-3

SK-N

-SHcells

[60]

Estr

agol

e(1

-ally

l-4-m

etho

xybe

nzen

e)

OM

e

Indu

ctionof

GST

andQR

Indu

ctionof

GST

andQRin

mou

selivers

Four

strainso

fmou

se

AJO

laHsdC

57BL

6NHsd

BALB

cAnN

Hsdand

CBAJC

rHsd

[61]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 7: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 7

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

OO

Safro

le (4

-ally

l-12

-di

met

hoxy

benz

ene

(met

hyle

ugen

ol))

L-Lactatea

ssay

Cytotoxice

ffect

B6C3

F1mou

sehepatocytes

[47]

F-344rath

epatocytes

UDSassay

Cytotoxicityandgeno

toxicityeffects

B6C3

F1mou

sehepatocytes

F-344rath

epatocytes

Trypan-bluee

xclusio

nassay

Potentialcytotoxiceffects

Rath

epatocytes

andSC

C-4cells

[4751

54]

Flow

cytometric

assay

Indu

ctionof

apop

tosis

ofcells

byinvolvem

ento

fmito

chon

dria-a

ndcaspase-depend

entsignalp

athw

ay

SCC-

4cells

[51]

Western

blottin

ganalysis

Upregulationof

thep

rotein

expressio

nof

BaxandBidand

downregulationof

thep

rotein

levelsof

Bcl-2

(upregulation

ofther

atio

ofBa

xBc

l-2)resulting

incytochromec

release

prom

oted

Apaf-1levelandsequ

entia

lactivationof

caspase-9andcaspase-3in

atim

e-depend

entm

anner

Real-timeP

CRmRN

Aexpressio

nsof

caspases

38and9

MTT

assay

Cytotoxice

ffect

Hum

anBM

Fs[52]

Western

blot

analysis

Activ

ateN

F-120581Bexpressio

nthatmay

beinvolved

inthe

pathogenesisof

OSF

andmediatedby

ERKactiv

ationand

COX-

2sig

naltransdu

ctionpathway

Fura-2

asap

robe

assay

Indu

ceda[

Ca2+] 119894increase

bycausingCa

2+releasefrom

the

endo

plasmicretic

ulum

inap

hospho

lipaseC

-and

protein

kinase

C-independ

entfashion

andby

indu

cing

Ca2+influ

xPC

3cells

[53]

Com

etassay(D

API)staining

Indu

cedapop

tosis

(chrom

atin

cond

ensatio

n)andDNA

damage

HL-60

cells

[51]

Flow

cytometric

analysis

Increasedthep

rodu

ctionof

reactiv

eoxygenspecies(RO

S)andCa

2+andredu

cedthem

itochon

drialm

embrane

potential

Western

blottin

ganalysisconfocallaser

microscop

y

Prom

oted

thee

xpressionof

glucose-regu

latedprotein78

(GRP

78)grow

tharrest-

andDNAdamage-indu

cibleg

ene

153(G

ADD153)and

activ

atingtranscrip

tionfactor

6120572(ATF

-6120572)

Flow

cytometric

analysis

Prom

oted

thelevels

ofCD

11bandMac-3

thatmight

bethe

reason

forp

romotingthea

ctivity

ofph

agocytosis

redu

cedthec

ellp

opulationsuch

asCD

3andCD

19cells

NKcells

[58]

Ames

test

Mutagenicity

activ

itySalm

onellaTA

98[59]

8 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Safro

le-2

-3-o

xide

4-(2

3-e

poxy

prop

yl)-

12-

(met

hyle

nedi

oxy)

OOO

MTT

assay

Prod

uced

toxicityin

cells

inad

ose-

andtim

e-depend

ent

manner

HepG2cells

FVBmice

[56]

Com

etassay

Sign

ificant

dose-dependent

increase

inthed

egreeo

fDNA

(strandbreaks)

Cytotoxico

rgenotoxiceffectin

vivomdashipC

ometassay

Increase

inmeanCom

ettailmom

entinperip

heralblood

leuk

ocytes

andin

thefrequ

ency

ofmicronu

cleated

retic

ulocytes

HepG2cells

FVBmice

TUNEL

assay

Activ

ityof

caspases

38and9

A549cells

[58]

Myr

istic

in(5

-ally

l-3-m

etho

xy-1

2-

met

hyle

nedi

oxyb

enze

ne)

O

OOWestern

blot

assay

Cleavageso

fPARP

accom

panied

byan

accumulationof

cytochromec

andby

thea

ctivationof

caspase-3

SK-N

-SHcells

[60]

Estr

agol

e(1

-ally

l-4-m

etho

xybe

nzen

e)

OM

e

Indu

ctionof

GST

andQR

Indu

ctionof

GST

andQRin

mou

selivers

Four

strainso

fmou

se

AJO

laHsdC

57BL

6NHsd

BALB

cAnN

Hsdand

CBAJC

rHsd

[61]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

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Page 8: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

8 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Safro

le-2

-3-o

xide

4-(2

3-e

poxy

prop

yl)-

12-

(met

hyle

nedi

oxy)

OOO

MTT

assay

Prod

uced

toxicityin

cells

inad

ose-

andtim

e-depend

ent

manner

HepG2cells

FVBmice

[56]

Com

etassay

Sign

ificant

dose-dependent

increase

inthed

egreeo

fDNA

(strandbreaks)

Cytotoxico

rgenotoxiceffectin

vivomdashipC

ometassay

Increase

inmeanCom

ettailmom

entinperip

heralblood

leuk

ocytes

andin

thefrequ

ency

ofmicronu

cleated

retic

ulocytes

HepG2cells

FVBmice

TUNEL

assay

Activ

ityof

caspases

38and9

A549cells

[58]

Myr

istic

in(5

-ally

l-3-m

etho

xy-1

2-

met

hyle

nedi

oxyb

enze

ne)

O

OOWestern

blot

assay

Cleavageso

fPARP

accom

panied

byan

accumulationof

cytochromec

andby

thea

ctivationof

caspase-3

SK-N

-SHcells

[60]

Estr

agol

e(1

-ally

l-4-m

etho

xybe

nzen

e)

OM

e

Indu

ctionof

GST

andQR

Indu

ctionof

GST

andQRin

mou

selivers

Four

strainso

fmou

se

AJO

laHsdC

57BL

6NHsd

BALB

cAnN

Hsdand

CBAJC

rHsd

[61]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

Rath

epatocytes

[55]

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

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Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

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Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

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Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

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Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Emergency Medicine InternationalHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Autoimmune Diseases

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MEDIATORSINFLAMMATION

of

Page 9: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 9

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Ane

thol

e [1-

met

hoxy

-4-(

1-pr

open

yl)b

enze

ne]

O

Trypan-bluea

ssay

Cytotoxica

ctivity

HeLarath

epatocytes

cell

[2123

5564]

MTT

assay

Cytotoxica

ctivity

HT-1080M

L1-a

cells

[63]

Boyden-chambera

ssay

Redu

ced40

and85

ofcells

toinvade

into

Matrig

el

HT-1080

cells

[62]

Gelatin

zymograph

yand

RT-PCR

analyses

Inhibitory

effecto

fMMP-2andMMP-9anddo

wnregulate

thee

xpressionof

matrix

metalloproteinases(MMPs)2

and

9andup

regu

latetheg

enee

xpressionof

tissueinh

ibito

rof

metalloproteinase-(TIMP-)1

Expressio

nof

MMPsT

IMPs

anduP

Aassays

Decreased

mRN

Aexpressio

nof

urokinasep

lasm

inogen

activ

ator

(uPA

)

Western

blot

analysis

Supp

ressed

thep

hospho

rylationof

AKT

extracellu

lar

signal-regulated

kinase

(ERK

)p38andnu

clear

transcrip

tionfactor

kapp

aB(N

F-120581B)

Fluo

rometric

assay

Increasesinthelevelso

fADPandAMP

Rath

epatocytes

[62]

CCK-8assay

Estro

genice

ffectbasedon

thec

oncentratio

nsof

the

hydroxylated

interm

ediate4OHPB

MCF

-7cells

Western

blot

analysis

Supp

ressed

TNF-indu

cedactiv

ationof

thetranscriptio

nfactor

AP-1c-junN-te

rminalkinaseand

MAPK

-kinase

ML1-a

cells

[63]

Colorim

etric

efluo

rometric

assays

Redu

cedthelevels

ofnu

cleicacidsa

ndMDAand

increased

NP-SH

concentrations

EATcells

inthep

awof

Swiss

mice

[65]

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

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The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

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Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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Autoimmune Diseases

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ScientificaHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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of

Page 10: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

10 BioMed Research International

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

O

HH

CH3

-Ane

thol

e oxi

de(2

R3R

)-2-

(4-

met

hoxy

phen

yl)-

3-m

ethy

l-oxi

rane

)

trans

H3CO

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

OM

e

MeO

OM

e

-Asa

rone

1

24-

trim

etho

xy-5

-[(Z

)-pr

op-1

-eny

l]ben

zene

120573

SRBassay

Cytotoxica

ctivity

A549SK

-OV-3SK

-MEL

-2and

HCT

15cells

[70]

O

H

HCH

3H

3CO

H3CO

OCH

3

-Asa

rone

oxi

de(1

-pro

peny

l-24

5-(

trim

etho

xybe

nzen

e)tra

ns

Ames

test

MutagenicforS

almonellateste

rstrains

Salm

onellatyphim

urium

strains

TA1535TA100andTA

98Indu

ctionof

hepatic

tumors

Carcinogenicin

theind

uctio

nof

hepatomas

B6C3

F1mice

[67]

Indu

ctionof

skin

papillo

mas

Carcinogenicin

theind

uctio

nof

skin

papillo

mas

CD-1mice

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

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Hindawi Publishing Corporationhttpwwwhindawicom

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ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

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Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

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of

Page 11: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 11

Table1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

(E)-

3-ph

enyl

prop

-2-e

nal

O

Cinn

amal

dehy

de

MTT

assay

Cytotoxica

ctivity

A375HCT

116MCF

-7P

388

L-12103LL

SNU-C

5HL-60

U-937H

CT116

L1210

mou

se

andSyria

nhamste

rembryo

cells

[7177

7880

8489]

TRPA

1and

TRPM

8gene

expressio

nRe

duce

thep

roliferationof

melanom

acells

thiseffectis

independ

ento

fanactiv

ationof

TRPA

1chann

els

A375G361SK

-Mel-19

SK-M

el-23andSK

-Mel-

28cells

[77]

Sulfo

rhod

amineB

assay

Cytotoxica

ctivity

HeLaA549SK

-OV-3

SK-M

EL-2X

F-498andHCT

-15

cells

[76]

Ames

test

Not

mutagenic

Strains(TA

98TA100TA

1535

andTA

1537)o

fSalmonella

typhim

urium

DTN

Bassay

TrxR

inactiv

ation

Recombinant

ratT

rxR

[78]

Western

blot

analysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

HCT

116cells

XTTassay

Inhibitory

effectson

theg

rowth

ofcells

Hep

G2cells

[80]

Western

blot

analysis

Increase

intheC

D95

(APO

-1CD95)p

rotein

expressio

nin

Hep

G2cells

Inhibitedthee

xpressionof

Baxp53andCD

95asw

ellas

thec

leavageo

fPARP

Thispretreatmentalso

preventedthe

downregulationof

Bcl-X

Lin

cells

Trypan-bluea

ssay

Inhibitedthep

roliferationof

cells

PLCPR

F5cells

[81]

Flow

cytometer

analysis

Activ

ationof

proapo

ptotic

Bcl-2

family

(Bax

andBid)

proteins

andMAPK

pathway

PLCPR

F5cells

[83]

Western

immun

oblotanalysis

Preventedthep

hospho

rylationof

JNKandp38proteins

DAPIFluorom

etric

metho

dIndu

cedapop

tosis

incells

P388L-12103LLSN

U-C

5HL-60U

-937and

HepG2cells

[71]

Flow

cytometry

analysis

Indu

cesthe

ROS-mediatedmito

chon

drialp

ermeability

transitionandresultant

cytochromec

release

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

NRU

assay

Indu

cedthefragm

entatio

nof

nucle

i(Plate2

)which

istypicalfor

cond

ensedapop

totic

phenotype

Hep-2

cells

[87]

Genotoxicity

assaysmdashDNA

repairtest

InvolveD

NAdamagea

sone

ofthefactorsinvolved

inthe

mam

maliancytotoxicity

LDH-cytotoxicity

assay

Potent

inhibitory

effectagainsthu

man

hepatomac

ell

grow

th

HepG2andHep3B

cells

[88]

Western

blot

analysis

JAK2

-STA

T3STA

T5pathway

may

beim

portanttargets

Decreased

thep

rotein

levelsof

cyclinD1and

proliferativ

ecellnu

clear

antig

en(PCN

A)b

utincreasedthep

rotein

levels

ofp27K

ip1andp21W

af1C

ip1

Flow

cytometry

analysis

Indu

cing

apop

tosis

andsynergizingthec

ytotoxicity

ofCI

Kcells

K562

cells

[92]

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 12: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

12 BioMed Research InternationalTa

ble1Con

tinued

Com

poun

dEx

perim

entalprotocol

Antitu

moralactiv

ityandor

mechanism

Animalcelllinetested

Reference

Spectralanalysis

Indu

cedan

adaptiv

eantioxidant

respon

sethroug

hNrf2

-mediatedup

regulationof

phaseIIenzym

esincluding

TrxR

indu

ction

S180

inmice

[89]

OH

CHO

2998400 -H

ydro

xyci

nnam

alde

hyde

[3

-(2

-hyd

roxy

phen

yl)-

2-pr

open

al]

MTT

assay

Cytotoxica

ctivity

NIH

3T3

cells

[90]

Lymph

oproliferationmdash

Con

A

LPSor

PMAplus

iono

mycin

Inhibitthe

lymph

oproliferationandindu

ceaT

-cell

differentiatio

nfro

mCD

4CD8do

ublepo

sitivec

ellsto

CD4

orCD

8sin

glep

ositive

cells

Mices

plenocytes

[74]

Flow

cytometry

analysis

Capabilityto

blockthec

ellgrowth

andstimulatea

differentiatio

nto

maturec

ell

IgM-secretin

gBcells

toSR

BCDecreased

levelofIgM

tobe

duetothelow

erlevelofB

-cell

proliferatio

nBa

lbcmice

Cinn

amic

acid

[(E)

-3-

phen

ylpr

op-2

-eno

ic ac

id]

OH

O

ELISA

Inhibitsproliferatio

nandDNAsynthesis

Caco-2

cells

[79]

Radioimmun

oassay

Decreased

intracellularc

AMPlevels

Flow

cytometry

analysis

Influ

ence

onthetum

orcellcycle

G2-M

perio

dshortened

cellcycle

leng

thenedand

cellproliferatio

ninhibited

U14

cells

[92]

cis-D

DP-indu

ced

Potentiatedtheinactivatingeffecto

fcis-DDPin

allphases

ofthec

ellcycle

NHIK

3025

cells

[82]

Trypan-bluea

ssay

Anticancera

ctivity

HL-60A

549PC

3Du145

LN-C

aPA

172U251SK

MEL

28

andA375cells

[9394]

Flow

cytometry

analysis

Inhibitio

nandindu

ced-differentiatio

non

human

osteogenicsarcom

acells

Hum

anosteogenicsarcom

acells

[95]

MTT

assay

Cytotoxica

ctivity

HepG2cells

[97]

Spectro

photom

eter

Highera

ntioxidant

capacity

NRU

assay

Cytotoxica

ctivity

Mac

Coy

cells

[96]

MTT

assay

Antivira

lactivity

EHV-1

[98]

4-pr

op-2

-eny

lben

zene

-12

-dio

l

HO

OH

Hyd

roxy

chav

icol

Trypan-bluea

ssay

Cytotoxica

ctivity

Rath

epatocytes

[54]

Watersc

hrom

atograph

Decreaseincellviabilityaccom

panied

bylosses

ofAT

PGSH

increase

inGSSGR

OSandMDAlevels

AcO

OAc

1998400 -A

ceto

xych

avic

ol ac

etat

e(1

S)-1

-[4-

(ace

toxy

)-ph

enyl

]pro

p-2-

en-1

-yl a

ceta

te

CH2

Indirectim

mun

ofluo

rescent

metho

dEB

Vactiv

ation

Inhibitin

gtheg

enerationof

anions

durin

gtumor

prom

otion

Rajicells

[100]

Trypan-bluee

xclusio

nassay

Cytotoxica

ctivity

RPMI8226U266andIM

-9cells

[99]

Flow

cytometry

Indu

cedcaspases

39and8activ

ities

RPMI8226cells

Western

blot

analysis

TNF-120572-in

ducedapop

tosis

ELISA

Dow

nregulationof

NF-120581Bactiv

ityTN

F-120572-in

ducedapop

tosis

Invivo

assay

Anticancere

ffectsw

ithno

toxice

ffects

NODSCI

Dmou

se

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 13: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 13

isoeugenol showed carcinogenic effects causing increasedincidence of rarely occurring thymoma and mammary glandcarcinoma There was no evidence of carcinogenic activitydue to isoeugenol in female F344N rats However therewas clear evidence of carcinogenic activity due to isoeugenolin male B6C3F1 mice including increased incidence ofhepatocellular adenoma hepatocellular carcinoma and hep-atocellular adenoma with carcinoma Carcinogenic activitydue to isoeugenol in female B6C3F1mice was observed in theform of increased incidence of histiocytic sarcoma Exposureto isoeugenol resulted in nonneoplastic lesions of the nosein male and female rats of the kidney in female mice andof the nose forestomach and glandular stomach in miceof both sexes [50] However methyleugenol is minimallycytotoxic for hepatocytes and leukemia cells compared toeugenol [48 49]The structural similarity of these substanceswith eugenol stimulates advances in pharmacological studiesto explore their therapeutic potential in cancer treatment

23 Safrole Safrole-2101584031015840-oxide and Myristicin Safrole is animportant food-borne phytotoxin found in many naturalproducts such as oil of sassafras anise basil nutmeg andpepper Safrole is cytotoxic against human tongue squamouscarcinoma [51] primary human buccal mucosal fibroblasts[52] prostate cancer [53] rat hepatocytes [54] and leukemia[51] and shows genotoxic activity [55 56]

Safrole induced apoptosis in human tongue squamouscarcinoma SCC-4 cells by mitochondria- and caspase-dependent signaling pathways Safrole-induced apoptosiswas accompanied by upregulation of Bax and Bid and down-regulation of Bcl-2 which increased the ratio of BaxBcl-2resulting in cytochrome c release increasedApaf-1 levels andsequential activation of caspase-9 and caspase-3 in a time-dependentmanner [51] InA549human lung cancer cells saf-role activated caspases 3 8 and 9 [57] In rat hepatocytes cellssafrole induced cell death by loss of mitochondrial mem-brane potential and generation of oxygen radical specieswhich were assayed using 2101584071015840-dichlorodihydrofluoresceindiacetate (DCFH-DA) [54]

Fan and collaborators [58] showed that safrole promotedthe activities of macrophages and NK cells in BALBcmice While promoting macrophage phagocytosis safroleincreased abundance of cell markers such as CD11b andMac-3 Additionally NK cell cytotoxicity was remarkablysuppressed in mice treated with safrole as were levels of cellmarkers for T cells (CD3) and B cells (CD19) Safrole was alsocytotoxic against primary human buccal mucosal fibroblasts(BMFs) [52] Ni and collaborators [52] demonstrated thatsafrole increased NF-120581B expression which may have beeninvolved in the pathogenesis of oral submucous fibrosis NF-120581B expression induced by safrole in fibroblasts may be medi-ated by ERK activation and the COX-2 signal transductionpathway

A study by Chang and collaborators [53] investigatedthe effect of safrole on intracellular Ca2+ mobilization andviability of human PC3 prostate cancer cells Cytosolicfree Ca2+ levels ([Ca2+]i) were measured using fura-2 as aprobe Safrole increased [Ca2+]i by causing Ca

2+ release from

the endoplasmic reticulum in a phospholipase C- and proteinkinase C-independent manner which decreased cell viabilityin a concentration-dependent manner In HL-60 leukemiacells safrole promoted the expression of glucose-regulatedprotein 78 (GRP78) growth arrest- and DNA damage-inducible gene 153 (GADD153) and activating transcriptionfactor 6120572 (ATF-6120572) [51] In the unscheduled DNA synthesis(UDS) assay described by Howes and collaborators [55]safrole exhibited genotoxic activity in freshly isolated rathepatocyte primary cultures

Safrole-2101584031015840-oxide (SAFO) is a reactive electrophilicmetabolite of safrole SAFO is themostmutagenicmetaboliteof safrole that has been tested in theAmes test but data on thegenotoxicity of SAFO inmammalian systems is scarce SAFOinduced cytotoxicity DNA strand breakage and micronucleiformation in human cells in vitro and in mice [56] Inaddition safrole produced mutagenicity in Salmonella TA 98and TA 100 in the Ames test [59]

Myristicin (1-allyl-34-methylenedioxy-5-methoxyben-zene) is an active constituent of nutmeg parsley and carrot Astudy by Lee and collaborators [60] investigated the cytotoxicand apoptotic effects of myristicin on human neuroblastomaSK-N-SH cells Apoptosis triggered by myristicin wascaused by cleavage of PARP which was accompanied byaccumulation of cytochrome c and activation of caspase-3These results suggested that myristicin induced cytotoxicityin human neuroblastoma SK-N-SH cells by an apoptoticmechanism [60]

Ahmad and collaborators [61] investigated the effect ofmyristicin on activity of glutathione S-transferase (GST)and NADPHquinone oxidoreductase (QR) in four mousestrains The authors showed that activity of GST and QR wassignificantly increased in the livers of all four mouse strainsGST activity was increased in the intestine of three out offour strains andQR activity was significantly increased in thelungs and stomachs of three out of four stains Thus myris-ticin which is found in a wide variety of herbs and vegetablesshows strong potential as an effective chemoprotective agentagainst cancer

Safrole safrole-2101584031015840-oxide and myristicin are bioactivesubstances in antitumor models that can be used as startingmaterials for the preparation of derivatives with improvedpharmacological profile

24 Estragole Anethole and trans-Anethole Oxide Estragolehas been isolated from essential oils of Artemisia dracun-culus and Leonotis ocymifolia Howes and collaborators [55]demonstrated the genotoxic activity of estragole via UDSassay in which estragole induced dose-dependent increasesin UDS up to 27 times that of the control in rat hepatocytesin primary culture

Anethole (1-methoxy-4-(1-propenyl)benzene) occursnaturally as a major component of essential oils from fenneland star anise and is also present in numerous plants such asdill basil and tarragon [62] Anethole had a cytotoxic effecton fibrosarcoma tumor [63] breast cancer [63] hepatocytes[55 64] cervical carcinoma [21 23] and Ehrlich ascitestumor [65] as well as an anticarcinogenic effect and a lack ofclastogenic potential [65]

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 14: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

14 BioMed Research International

Chainy and collaborators [66] reported that anetholereduced apoptosis by inhibiting induction of NF-120581B acti-vator protein 1 (AP-1) c-jun N-terminal kinase (JNK) andmitogen-activated protein kinase kinase (MAPKK) by tumornecrosis factor (TNF) Choo and collaborators investigatedthe antimetastatic activity of anethole [63] and showed thatanethole inhibited proliferation adhesion and invasion ofhighly metastatic human HT-1080 fibrosarcoma cells Anet-hole also inhibited the activity of metalloproteinases (MMP-2 and MMP-9) and increased the activity of MMP inhibitorTIMP-1 [63]Nakagawa and Suzuki [62] showed that anetholeinduced a concentration- and time-dependent loss of cellviability in isolated rat hepatocytes which was followed bydecreases in intracellular levels of ATP and total adeninenucleotide pools Howes and collaborators [55] demonstratedthat anethole did not induce unscheduled DNA synthesis(UDS) in rat hepatocytes in primary culture In Ehrlichascites tumor-bearing miceanethole increased survival timeand reduced tumor weight tumor volume and body weight[65]

Anethole is metabolized through 3 pathways O-demeth-ylation 120596-hydroxylation followed by side chain oxidationand epoxidation of the 12-double bond The cytotoxicity oftrans-anethole oxide in rat hepatocytes has been shown tobe due to its metabolism to epoxide [67] In addition trans-anethole oxide produced a positive result in the Salmonellamutation assay and induced tumors in mice These resultssuggest that epoxidation of the side chain of anethole in vivocould be a carcinogenic metabolic mechanism Kim and col-laborators [67] found that trans-anethole oxide is more toxicto animals than trans-anethole and was mutagenic in pointmutation and frameshift mutation Ames test models trans-Anethole did not induce hepatomas inmale B6C3F1mice butthe highest dose of trans-anethole oxide tested (05 120583molg)significantly increased the incidence of hepatomas

25 Asaraldehyde 120573-Asarone and trans-Asarone OxideAcorus gramineus (Araceae) which is distributed throughoutKorea Japan and China has been used in Korean traditionalmedicine for improvement of learning andmemory sedationand analgesia [68] Several pharmacologically active com-pounds such as 120573-asarone 120572-asarone and phenylpropeneshave been reported from this rhizome [69] Park and collabo-rators [70] investigated asarone and asaraldehyde and showedminimal cytotoxicity (IC

50lt 30 120583M) in the SRB assay using

4 human tumor cell lines A549 (non-small cell lung adeno-carcinoma) SK-OV-3 (ovarian cancer cell) SK-MEL-2 (skinmelanoma) and HCT15 (colon cancer cell) trans-Asaroneoxide prepared from trans-asarone and dimethyldioxiraneinduced hepatomas in B6C3F1 mice and skin papillomas inCD-1 mice and was mutagenic for Salmonella strains [67]

26 Cinnamaldehyde 21015840-Hydroxycinnamaldehyde and Cin-namic Acid Cinnamaldehyde is a bioactive compound iso-lated from the stem bark of Cinnamomum cassia and hasbeen widely used in folk medicine for its anticancer [71]antibacterial [72] antimutagenic [73] and immunomodula-tory effects [74] as well as to remedy other diseases [75]

The cytotoxic activity of cinnamaldehyde has been confirmedin melanoma [76 77] the colon [76 78 79] breast cancer[78] hepatic tumor [80 81] leukemia [71 82 83] cervicalcarcinoma [76 83] the lung the ovary the central nervoussystem [76] lymphoma mouse leukemia [76 84] mouselung carcinoma [71] lymphocytes [74] hepatocytes [85]embryo cells [86] and larynx carcinoma [87] Its genotoxicityhas been confirmed in vitro [87] Cinnamaldehyde also hadgenotoxic effects against SA7-transformed Syrian hamsterembryo cells [86]

Ng and Wu [80] showed that cinnamaldehyde inducedlipid peroxidation in hepatocytes isolated frommale Sprague-Dawley rats with glutathione depletion Adding NADH gen-erators for example xylitol prevented cytotoxicity inducedby cinnamaldehyde but decreasing mitochondrial NAD+with rotenone markedly increased cinnamaldehyde cyto-toxicity The authors showed that cinnamaldehyde-inducedcytotoxicity and inhibition of mitochondrial respiration weremarkedly increased by ALDH inhibitors and in particular bycyanamide [80]

Chew and collaborators [78] used flow cytometric anal-ysis to show that 80120583M of cinnamaldehyde caused cell cyclearrest at the G

2M phase in HCT 116 cells and induced cleav-

age of caspase-3 and PARP It has also been proposed that cin-namaldehyde induced apoptosis by ROS release with TrxR-inhibitory and Nrf2-inducing properties [78] Ka and col-laborators [71] demonstrated that cinnamaldehyde inducedROS-mediated mitochondrial permeability and cytochromec release in human leukemia cells (HL-60)

Using hepatoma cells Wu and collaborators [81] demon-strated that cinnamaldehyde upregulated Bax protein down-regulated Bcl-2 and Mcl-1 and caused Bid to cleave upon theactivation of caspase-8 These events consequently led to celldeath JNK p38 and ERK were activated and phosphory-lated after cinnamaldehyde treatment in a time-dependentmanner which suggested that apoptosis was mediated byactivation of proapoptotic Bcl-2 family (Bax andBid) proteinsand MAPK pathways [81] Cinnamaldehyde can also activateTRPA1 expression in melanoma cells [77]

Cinnamaldehyde caused a time-dependent increase inCD95 (APO-1CD95) protein expression in HepG2 cells(human hepatoma) while also downregulating antiapoptoticproteins (Bcl-XL) and upregulating proapoptotic (Bax) pro-teins in a time-dependent manner [80] Preincubation ofHepG2 cells with cinnamaldehyde effectively inhibited theexpression of Bax p53 and CD95 as well as the cleavage ofPARP This pretreatment also prevented downregulation ofBcl-XL [80] Using the HepG2 and Hep3B human hepatomacancer cell lines Chuang and colleagues [88] demonstratedthat cinnamaldehyde had a potent inhibitory effect againsthuman hepatoma cell growth They observed that the JAK2-STAT3STAT5 pathway might be an important target ofcinnamaldehyde Cinnamaldehyde also altered apoptoticsignaling Cinnamaldehyde significantly decreased proteinlevels of cyclin D1 and proliferative cell nuclear antigen(PCNA) but increased the protein levels of p27Kip1 andp21Waf1Cip1 [86] In an assay of thioredoxin reductase (TrxR)action cinnamaldehyde showed a TrxR inactivation effect

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

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[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

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[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 15: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 15

Phenylpropanoids

∙ Suppressed the phosphorylation of AKT extracellular signal-regulated kinase (ERK) and p38

∙ Antioxidative activitystimulation the production ofsuperoxide (O2

minus)∙ Induced an adaptive antioxidant response through Nrf2-

mediated upregulation of phase II enzymes including TrxR induction

∙ Induced caspases 3 9 and 8 activities∙ Upregulation of phase II enzymes∙ Inhibition of topoisomerase II

∙ Proliferative cell nuclear antigen (PCNA) but increased protein levels of p27Kip1

and p21Waf1Cip1

∙ Protect cells via inhibition of xanthine oxidase activity and lipid peroxidation

∙ TrxR induction

∙ Induced a [Ca2+]i increase by causing Ca2+release∙ Decreased cellular ATP level∙ Increases in the levels of ADP and AMP

∙ Downregulated the expression of Bcl-2COX-2 and IL-120573∙ Increase in LDH release∙ Production of ROS

∙ Apoptotic manifestations via phospho-ser 15-p53 into mitochondria

∙ Inhibition of the proliferation associated genes c-Myc and H-ras

∙ Depleted the level of intracellular glutathione∙ Hemolytic activity

∙ Reduced the cell population such as CD3and CD19∙ Increase in the CD95 (APO-1CD95) protein expression∙ Decreased the protein levels of cyclin D1∙ Transcriptional activity of E2F1

∙ Prevented the phosphorylation of JNK and p38proteins

∙∙

Deregulation of the E2F family of transcription factorsUpregulation of p53 expression with a concomitant increase in p21WAF1 levels

∙ Upregulate the gene expression of tissue inhibitor of TIMP-1

∙ Promoted the levels of CD11b and Mac-3 thatmight be the reason for promoting the activityof phagocytosis

∙ Downregulate the expression of MMP-2 and -9Reduced the nicotine-induced ROS NO generation and iNOSII expression

Figure 1 Possible mechanisms of action from phenylpropanoids antitumoral activity

that could contribute to its cytotoxicity [89] Furthermorecinnamaldehyde had an antitumor effect in Sarcoma 180-bearing BALBc mice and a protective effect on immunefunction [89]

21015840-Hydroxycinnamaldehyde a cinnamaldehyde deriva-tive was studied for its immunomodulatory effects Thechemopreventive effects of cinnamaldehyde derivatives weredemonstrated on hepatocellular carcinoma formation in H-ras12V transgenic mice where they probably produced along-term immunostimulating effect on T cells becauseimmune cell infiltration into hepatic tissues was increased[90]

21015840-Hydroxycinnamaldehyde has immunomodulatoryeffects in vivo but in vitro studies showed that secretedIgM level was depressed in the culture supernatants ofsplenocytes Decreased IgM produced by cinnamaldehydetreatment in vitro appeared to be due to lower levels of B-cellproliferation rather than direct inhibition of IgM production[74] Koh and collaborators [74] also demonstrated thatcinnamaldehyde induced T-cell differentiation fromCD4CD8 double positive cells to CD4 or CD8 single positivecells

Cinnamic acid occurs throughout the plant kingdom andparticularly in flavor compositions and products containingcinnamon oil [91] Cinnamic acid inhibited proliferation

of uterocervical carcinoma [92] leukemia [93] colon ade-nocarcinoma [79] glioblastoma melanoma prostate lungcarcinoma [94] osteogenic sarcoma [95] cells Mac Coy cells[96] Hep G2 cells [97] and kidney epithelial (VERO) cells[98]

Cinnamic acid had an inhibitory effect on uterocervicalcarcinoma (U14) cells in mice causing tumor cell apoptosis[92] In vitro assay of U14 cells demonstrated a shortenedG2-M period lengthened cell cycle and inhibited cell prolif-

eration which supported the conclusion that cinnamic acidinfluenced tumor cell cycle [92]

Ekmekcioglu and collaborators [79] showed that cin-namic acid inhibited proliferation and DNA synthesis ofCaco-2 (human colon) cells Treatment with cinnamic acidmodulated the Caco-2 cell phenotype by dose-dependentlystimulating sucrase and aminopeptidase N activity whileinhibiting alkaline phosphatase activity In melanoma cellscinnamic acid induced cell differentiation with morpho-logical changes and increased melanin production Cin-namic acid reduced the invasive capacity of melanoma cellsand modulated expression of genes implicated in tumormetastasis (collagenase type IV and tissue inhibitor metal-loproteinase 2) and immunogenicity (HLA-A3 class-I majorhistocompatibility antigen) [94]

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 16: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

16 BioMed Research International

Using in vivo and in vitro assays Zhang and collab-orators (2010) [92] showed that cinnamic acid influencedthe cell cycle of uterocervical carcinoma cells (U14) theG2-M period was shortened cell cycle was lengthened and

cell proliferation was inhibited Cinnamic acid also induceddifferentiation of human osteogenic sarcoma cells and causeda higher percentage of cells in S phase [95]

27 Hydroxychavicol and 11015840-Acetoxychavicol Acetate Hydrox-ychavicol (1-allyl-34-dihydroxybenzene) is a major com-ponent in Piper betle leaf which is used for betel quidchewing in Asia and is also a major metabolite of saf-role which is the main component of sassafras oil in ratsand humans A study by Nakagawa and collaborators [54]demonstrated the biotransformation and cytotoxic effectsof hydroxychavicol in freshly-isolated rat hepatocytes Inhepatocytes pretreated with diethyl maleate or salicylamidehydroxychavicol-induced cytotoxicity was enhanced and wasaccompanied by a decrease in the formation of conjugates andinhibition of hydroxychavicol loss

Other studies indicate that mitochondria are the targetorganelles for hydroxychavicol which induces cytotoxic-ity through mitochondrial failure related to mitochondrialmembrane potential at an early stage and lipid peroxidationthrough oxidative stress at a later stage Furthermore theonset of cytotoxicity depends on the initial and residual con-centrations of hydroxychavicol rather than its metabolites

11015840-Acetoxychavicol acetate is obtained from the rhizomesof Languas galanga (Zingiberaceae) a traditional condi-ment in Thailand Recent studies have revealed that 11015840-acetoxychavicol acetate has potent chemopreventive effectsagainst rat oral carcinomas and inhibits chemically inducedtumor formation and cellular growth of cancer cells 11015840-Acetoxychavicol acetate inhibited NF-120581B and induced apop-tosis of myeloma cells in vitro and in vivo Therefore 11015840-acetoxychavicol acetate is a novel NF-120581B inhibitor andrepresents a new therapy for the treatment of multiplemyeloma patients [99] The isolation and identification of 11015840-acetoxychavicol acetate an inhibitor of xanthine oxidasemayinduce antitumor activity by inhibiting generation of anionsduring tumor promotion [100] (Figure 1)

3 Conclusions

The studies presented in this review reveal the anticancertherapeutic potential of bioactive constituents found in essen-tial oils and medicinal plants the phenylpropanoids Theresearch on the clinical studies of these natural products isrequired to the development of new drug candidates withapplications in the therapy of cancer

Abbreviations

Cell Lines

3LL Mouse lung carcinomaA172 Human malignant glioblastomaA375 Melanoma

A549 Lung adenocarcinomaBMFs Primary human buccal mucosal

fibroblastsCaco-2 Human colon adenocarcinomaCD11b MonocytesCD19 B cellsCD3 T cellsCEM Acute T lymphoblastoid leukemiaCN-Mel MelanomaDU-145 Androgen-insensitive prostate cancerF344 HepatocytesG361 MelanomaGR-Mel MelanomaHCT-15 Colon tumorHeLa Human cervical carcinomaHep3B Human hepatoma cancerHepG2 Human hepatomaHGF Human gingival fibroblastsHL-60 Human promyelocytic leukemiaHSC-3 Human oral cancer cellsHSG Human submandibular gland

carcinomaHT-1080 Human fibrosarcoma tumorK-562 Human chronic myelogenous

leukemiaKB Oral squamous carcinomaL-1210 Mouse leukemiaLCM-Mel MelanomaLCP-Mel MelanomaLN-CaP Prostate cancerMac-3 MacrophagesMCF-7 gem Human breast adenocarcinoma

(resistant to gemcitabine)MCF-7 Human breast adenocarcinomaML-1 Human myeloblastic leukemiaNHIK 3025 Human cervical carcinomaP388 Mouse leukemiaP-815 Murine mastocytomaPC-3 Human prostate cancerPLCPRF5 Human hepatomaPNP-Mel MelanomaRaw 2647 Mouse leukemic monocyte

macrophageS180 Sarcoma 180SbCl2 Primary melanomaSCC-4 Tongue squamous carcinomaSK-Mel-19 MelanomaSK-MEL-2 Skin melanomaSK-MEL-23 MelanomaSK-MEL-28 MelanomaSK-N-SH NeuroblastomaSK-OV-3 Ovarian cancerSNU-C5 Human colon cancerU14 Uterocervical carcinomaU251 Human malignant glioblastomaU-937 Human histiocytic lymphomauPA Urokinase plasminogen activatorWM1205Lu Metastatic melanomaWM266-4 Melanoma

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 17: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 17

WM3211 Primary radial growth phasemelanoma

WM98-1 Primary vertical growth phasemelanoma

XF-498 Central nerve system

Tests

AFC Antibody forming cellALDH Aldehyde dehydrogenaseAmes test Biological assay to assess the

mutagenic potential of chemicalcompounds

Boyden-chamber assay Evaluation of tumor cellinvasion in vitro

c-AMP Cyclic adenosinemonophosphate

CAs Chromosomal aberrationsCCK-8 Cell Counting Kit-8 a sensitive

colorimetric assayCDFHDA 5-(and -6)-carboxy-2101584071015840-

dichlorofluoresceindiacetate

Comet assay Single-cell gel electrophoresisCon A ConcanavalinDAPI 410158406-Diamidino-2-phenylindoleDCFH DichlorofluoresceinDEM Diethyl maleateDMBA 712-Dimethylbenz[a]anthraceneDPPH 11-Diphenyl-2-picrylhydrazylDTNB 551015840-Dithiobis-(2-nitrobenzoic

acid)EBV Epstein-Barr virusEHV-1 Herpes virus 1ESR Electron spin resonance

spectroscopyGSSG Oxidized glutathioneGST Glutathione S-transferaseLDH Lactate dehydrogenaseLPS LipopolysaccharideMDA MalondialdehydeMMP Matrix metalloproteinaseMTT [3(45-Dimethyl-thiazol-2-yl)-

25-diphenyl tetrazoliumbromide]

NF-120581B Nuclear factor-kappa BNRU assay Neutral red uptakep21WAF1 Cyclin-dependent kinase

inhibitor CDKN1APARP Poly(ADP-ribose) polymerasePBS Phosphate-buffered salinePCR Polymerase chain reactionPMA Phorbol 12-myristate-13-acetate

plus ionomycinQR Quinone oxidoreductaseSRB Sulforhodamine BSRBC Sheep red blood cellsTBA Test in the aqueous phase

TBARS Thiobarbituric acid reactivesubstances

TUNEL Terminal deoxynucleotidyltransferase-mediated dUTP nickend-labeling

UDS assay Unscheduled DNA synthesisV-FITC assay Apoptosis detection kitWST Tetrazolium saltXTT 23-Bis-(2-methoxy-4-nitro-5-

sulfophenyl)-2H-tetrazolium-5-carboxanilide

Conflict of Interests

The authors declare no conflict of interests

Acknowledgments

This researchwas supported byConselhoNacional deDesen-volvimento Cientıfico e Tecnologico (CNPq) and Coor-denacao de Aperfeicoamento de Pessoal de Nıvel Superior(CAPES)

References

[1] DHanahan andRAWeinberg ldquoThehallmarks of cancerrdquoCellvol 100 no 1 pp 57ndash70 2000

[2] D P de Sousa ldquoAnalgesic-like activity of essential oils con-stituentsrdquoMolecules vol 16 no 3 pp 2233ndash2252 2011

[3] R N de Almeida M de Fatima Agra F N S Maior and D Pde Sousa ldquoEssential oils and their constituents anticonvulsantactivityrdquoMolecules vol 16 no 3 pp 2726ndash2742 2011

[4] R D C Da Silveira E Sa L N Andrade R D R B De Oliveiraand D P De Sousa ldquoA review on anti-inflammatory activity ofphenylpropanoids found in essential oilsrdquoMolecules vol 19 no2 pp 1459ndash1480 2014

[5] Y-C Su and C-L Ho ldquoComposition in-vitro anticancer andantimicrobial activities of the leaf essential oil of Machilusmushaensis from Taiwanrdquo Natural Product Communicationsvol 8 no 2 pp 273ndash275 2013

[6] A Manjamalai and V M B Grace ldquoThe chemotherapeuticeffect of essential oil of Plectranthus amboinicus (Lour) on lungmetastasis developed by B16F-10 cell line in C57BL6 micerdquoCancer Investigation vol 31 no 1 pp 74ndash82 2013

[7] H M Ashour ldquoAntibacterial antifungal and anticancer activi-ties of volatile oils and extracts from stems leaves and flowers ofEucalyptus sideroxylon and Eucalyptus torquatardquoCancer BiologyandTherapy vol 7 no 3 pp 399ndash403 2008

[8] A L Medina-Holguın F Omar Holguın S Micheletto SGoehle J A Simon and M A OrsquoConnell ldquoChemotypicvariation of essential oils in the medicinal plant Anemopsiscalifornicardquo Phytochemistry vol 69 no 4 pp 919ndash927 2008

[9] P Kathirvel and S Ravi ldquoChemical composition of the essentialoil from basil (Ocimum basilicum Linn) and its in vitrocytotoxicity against HeLa and HEp-2 human cancer cell linesand NIH 3T3 mouse embryonic fibroblastsrdquo Natural ProductResearch vol 26 no 12 pp 1112ndash1118 2012

[10] D Pal S Banerjee S Mukherjee A Roy C K Panda andS Das ldquoEugenol restricts DMBA croton oil induced skin

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

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Page 18: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

18 BioMed Research International

carcinogenesis in mice downregulation of c-Myc and H-rasand activation of p53 dependent apoptotic pathwayrdquo Journal ofDermatological Science vol 59 pp 31ndash39 2010

[11] B S Park Y S Song S-B Yee et al ldquoPhospho-ser 15-p53translocates intomitochondria and interactswithBcl-2 andBcl-xL in eugenol-induced apoptosisrdquo Apoptosis vol 10 no 1 pp193ndash200 2005

[12] S K Jaganathan and E Supriyanto ldquoAntiproliferative andmolecular mechanism of eugenol-induced apoptosis in cancercellsrdquoMolecules vol 17 no 6 pp 6290ndash6304 2012

[13] A Jaafari M Tilaoui H A Mouse et al ldquoComparative studyof the antitumor effect of natural monoterpenes relationship tocell cycle analysisrdquo Brazilian Journal of Pharmacognosy vol 22no 3 pp 534ndash540 2012

[14] H Satooka and I Kubo ldquoEffects of eugenol on murine B16-F10 melanoma cellsrdquo in Proceedings of the 238th ACS NationalMeeting pp 16ndash20 Washington DC USA 2009

[15] R Ghosh N Nadiminty J E Fitzpatrick W L Alworth TJ Slaga and A P Kumar ldquoEugenol causes melanoma growthsuppression through inhibition of E2F1 transcriptional activityrdquoJournal of Biological Chemistry vol 280 no 7 pp 5812ndash58192005

[16] M Pisano G Pagnan M Loi et al ldquoAntiproliferative and pro-apoptotic activity of eugenol-related biphenyls on malignantmelanoma cellsrdquoMolecular Cancer vol 6 article 8 2007

[17] S Fujisawa T Atsumi K Satoh et al ldquoRadical generationradical-scavenging activity and cytotoxicity of eugenol-relatedcompoundsrdquo In Vitro and Molecular Toxicology vol 13 no 4pp 269ndash279 2000

[18] D Slamenova E Horvathova L Wsolova M Sramkovaand J Navarova ldquoInvestigation of anti-oxidative cytotoxicDNA-damaging and DNA-protective effects of plant volatileseugenol and borneol in human-derived HepG2 Caco-2 andVH10 cell linesrdquo Mutation ResearchmdashGenetic Toxicology andEnvironmental Mutagenesis vol 677 no 1-2 pp 46ndash52 2009

[19] S Hemaiswarya and M Doble ldquoCombination of phenyl-propanoids with 5-fluorouracil as anti-cancer agents againsthuman cervical cancer (HeLa) cell linerdquo Phytomedicine vol 20no 2 pp 151ndash158 2013

[20] A Hussain K Brahmbhatt A Priyani M Ahmed T ARizvi and C Sharma ldquoEugenol enhances the chemotherapeuticpotential of gemcitabine and induces anticarcinogenic and anti-inflammatory activity in human cervical cancer cellsrdquo CancerBiotherapy andRadiopharmaceuticals vol 26 no 5 pp 519ndash5272011

[21] S Stoichev G Zolotovich C Nachev and K SilyanovskaldquoCytotoxic effect of phenols phenol ethers furan derivativesand oxides isolated from essential oilsrdquo Comptes Rendus delrsquoAcademie Bulgare des Sciences vol 20 pp 1341ndash1344 1967

[22] P Zhang E Zhang M Xiao C Chen and W Xu ldquoEnhancedchemical and biological activities of a newly biosynthesizedeugenol glycoconjugate eugenol 120572-d-glucopyranosiderdquoAppliedMicrobiology and Biotechnology vol 97 no 3 pp 1043ndash10502013

[23] G Zolotovich K Silyanovska S Stoichev and C NachevldquoCytotoxic effect of essential oils and their individual compo-nents II Oxygen-containing compounds excluding alcoholsrdquoParfuemerie und Kosmetik vol 50 pp 257ndash260 1969

[24] R Ghosh M Ganapathy W L Alworth D C Chan and AP Kumar ldquoCombination of 2-methoxyestradiol (2-ME

2) and

eugenol for apoptosis induction synergistically in androgenindependent prostate cancer cellsrdquo The Journal of Steroid Bio-chemistry and Molecular Biology vol 113 no 1-2 pp 25ndash352009

[25] S Fujisawa T Atsumi M Ishihara and Y Kadoma ldquoCytotoxi-city ROS-generation activity and radical-scavenging activity ofcurcumin and related compoundsrdquoAnticancer Research vol 24no 2 pp 563ndash569 2004

[26] GAwuti G TuerxunA Tuerxun and J Tuerxun ldquoCytotoxicityof two different pulp capping materials on human dental pulpcells in vitrordquo Journal of Oral Science Research vol 28 no 5 pp485ndash487 2012

[27] S K Mahapatra S Bhattacharjee S P Chakraborty S Majum-dar and S Roy ldquoAlteration of immune functions and Th1Th2cytokine balance in nicotine-induced murine macrophagesimmunomodulatory role of eugenol and N-acetylcysteinerdquoInternational Immunopharmacology vol 11 no 4 pp 485ndash4952011

[28] A H Carrasco C L Espinoza V Cardile et al ldquoEugenol andits synthetic analogues inhibit cell growth of human cancer cells(Part I)rdquo Journal of the Brazilian Chemical Society vol 19 no 3pp 543ndash548 2008

[29] S Fujisawa T Atsumi Y Kadoma and H Sakagami ldquoAntioxi-dant and prooxidant action of eugenol-related compounds andtheir cytotoxicityrdquo Toxicology vol 177 no 1 pp 39ndash54 2002

[30] K Satoh Y Ida H Sakagami T Tanaka and S Fujisawa ldquoEffectof antioxidants on radical intensity and cytotoxic activity ofeugenolrdquo Anticancer Research vol 18 no 3 A pp 1549ndash15521998

[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001

[32] R GerosaM Borin GMenegazziM Puttini andG CavallerildquoIn vitro evaluation of the cytotoxicity of pure eugenolrdquo Journalof Endodontics vol 22 no 10 pp 532ndash534 1996

[33] J H Jeng L J Hahn F J Lu Y JWang andMY Kuo ldquoEugenoltriggers different pathobiological effects on humanoralmucosalfibroblastsrdquo Journal of Dental Research vol 73 no 5 pp 1050ndash1055 1994

[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993

[35] M Anpo K Shirayama and T Tsutsui ldquoCytotoxic effect ofeugenol on the expression of molecular markers related tothe osteogenic differentiation of human dental pulp cellsrdquoOdontology vol 99 no 2 pp 188ndash192 2011

[36] T Atsumi I Iwakura S Fujisawa and T Ueha ldquoReactiveoxygen species generation and photo-cytotoxicity of eugenol insolutions of various pHrdquo Biomaterials vol 22 no 12 pp 1459ndash1466 2001

[37] T Atsumi S Fujisawa K Satoh et al ldquoCytotoxicity and radicalintensity of eugenol isoeugenol or related dimersrdquo AnticancerResearch vol 20 no 4 pp 2519ndash2524 2000

[38] A Hussain A Priyani L Sadrieh K Brahmbhatt M Ahmedand C Sharma ldquoConcurrent sulforaphane and eugenol inducesdifferential effects on human cervical cancer cellsrdquo IntegrativeCancer Therapies vol 11 no 2 pp 154ndash165 2012

[39] T Atsumi S Fujisawa andK Tonosaki ldquoA comparative study ofthe antioxidantprooxidant activities of eugenol and isoeugenolwith various concentrations and oxidation conditionsrdquo Toxicol-ogy in Vitro vol 19 no 8 pp 1025ndash1033 2005

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

PainResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

ToxicologyJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

BioMed Research International

Emergency Medicine InternationalHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Autoimmune Diseases

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Anesthesiology Research and Practice

ScientificaHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Pharmaceutics

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

MEDIATORSINFLAMMATION

of

Page 19: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 19

[40] Y Suzuki K Sugiyama and H Furuta ldquoEugenol-mediatedsuperoxide generation and cytotoxicity in guinea pig neu-trophilsrdquo Japanese Journal of Pharmacology vol 39 no 3 pp381ndash386 1985

[41] A Maralhas A Monteiro C Martins et al ldquoGenotoxicityand endoreduplication inducing activity of the food flavouringeugenolrdquoMutagenesis vol 21 no 3 pp 199ndash204 2006

[42] G Kaur M Athar and M Sarwar Alam ldquoEugenol precludescutaneous chemical carcinogenesis in mouse by preventingoxidative stress and inflammation and by inducing apoptosisrdquoMolecular Carcinogenesis vol 49 no 3 pp 290ndash301 2010

[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002

[44] S K Jaganathan D Mondhe Z A Wani H C Pal and MMandal ldquoEffect of honey and eugenol on ehrlich ascites andsolid carcinomardquo Journal of Biomedicine and Biotechnology vol2010 Article ID 989163 5 pages 2010

[45] E Tangke Arung E Matsubara I Wijaya Kusuma E SukatonK Shimizu and R Kondo ldquoInhibitory components from thebuds of clove (Syzygium aromaticum) on melanin formation inB16melanoma cellsrdquoFitoterapia vol 82 no 2 pp 198ndash202 2011

[46] C M Marya G Satija J Avinash R Nagpal R Kapoor andA Ahmad ldquoIn vitro inhibitory effect of clove essential oil andits two active principles on tooth decalcification by apple juicerdquoInternational Journal of Dentistry vol 2012 Article ID 7596186 pages 2012

[47] J L Burkey J-M Sauer C A McQueen and I G SipesldquoCytotoxicity and genotoxicity of methyleugenol and relatedcongenersmdasha mechanism of activation for methyleugenolrdquoMutation Research Fundamental and Molecular Mechanisms ofMutagenesis vol 453 no 1 pp 25ndash33 2000

[48] K-T Lee J Choi J-H Park W-T Jung H-J Jung and H-J Park ldquoComposition of the essential oil of Chrysanthemumsibiricum and cytotoxic propertiesrdquo Natural Product Sciencesvol 8 no 4 pp 133ndash136 2002

[49] I A Maria Groh A T Cartus S Vallicotti et al ldquoGeno-toxic potential of methyleugenol and selected methyleugenolmetabolites in cultured Chinese hamster V79 cellsrdquo Food andFunction vol 3 no 4 pp 428ndash436 2012

[50] National Toxicology Program ldquoToxicology and carcinogenesisstudies of isoeugenol (CAS No 97-54-1) in F344N rats andB6C3F1 mice (gavage studies)rdquo National Toxicology ProgramTechnical Report Series vol 551 pp 1ndash178 2010

[51] F-S Yu A-C Huang J-S Yang et al ldquoSafrole induces celldeath in human tongue squamous cancer SCC-4 cells throughmitochondria-dependent caspase activation cascade apoptoticsignaling pathwaysrdquo Environmental Toxicology vol 27 no 7 pp433ndash444 2012

[52] W-F Ni C-H Tsai S-F Yang and Y-C Chang ldquoElevatedexpression of NF-120581B in oral submucous fibrosismdashevidencefor NF-120581B induction by safrole in human buccal mucosalfibroblastsrdquo Oral Oncology vol 43 no 6 pp 557ndash562 2007

[53] H C Chang H H Cheng C J Huang et al ldquoSafrole-inducedCa2+ mobilization and cytotoxicity in human PC3 prostatecancer cellsrdquo Journal of Receptors and Signal Transduction vol26 no 3 pp 199ndash212 2006

[54] Y Nakagawa T Suzuki K Nakajima H Ishii and A OgataldquoBiotransformation and cytotoxic effects of hydroxychavicol anintermediate of safrole metabolism in isolated rat hepatocytesrdquoChemico-Biological Interactions vol 180 no 1 pp 89ndash97 2009

[55] A J Howes V S W Chan and J Caldwell ldquoStructure-specificity of the genotoxicity of some naturally occurringalkenylbenzenes determined by the unscheduled DNA synthe-sis assay in rat hepatocytesrdquo Food and Chemical Toxicology vol28 no 8 pp 537ndash542 1990

[56] S-Y Chiang P-Y Lee M-T Lai et al ldquoSafrole-2101584031015840-oxideinduces cytotoxic and genotoxic effects in HepG2 cells and inmicerdquoMutation ResearchmdashGenetic Toxicology and Environmen-tal Mutagenesis vol 726 no 2 pp 234ndash241 2011

[57] A Du B Zhao D Yin S Zhang and J Miao ldquoSafrole oxideinduces apoptosis by activating caspase-3 -8 and -9 in A549human lung cancer cellsrdquo Bioorganic and Medicinal ChemistryLetters vol 16 no 1 pp 81ndash83 2006

[58] M-J Fan S-Y Lin C-C Yu et al ldquoSafrole-modulated immuneresponse is mediated through enhancing the CD11b surfacemarker and stimulating the phagocytosis by macrophages inBALBc micerdquo Human amp Experimental Toxicology vol 31 no9 pp 898ndash904 2012

[59] S E A Farag and M A A Abo-Zeid ldquoMutagenicity anddegradation of natural carcinogenic compound-safrole in spicesunder different processing methodsrdquo Journal of PharmaceuticalSciences vol 17 pp 149ndash158 1996

[60] B K Lee J H Kim J W Jung et al ldquoMyristicin-induced neu-rotoxicity in human neuroblastoma SK-N-SH cellsrdquo ToxicologyLetters vol 157 no 1 pp 49ndash56 2005

[61] H Ahmad V Valdivia A Cadena et al ldquoMyristicin inducer ofphase-II drug metabolizing enzymes and prospective chemo-protective agent against cancerrdquoActa Horticulturae vol 841 pp47ndash54 2009

[62] Y Nakagawa and T Suzuki ldquoCytotoxic and xenoestrogeniceffects via biotransformation of trans-anethole on isolated rathepatocytes and cultured MCF-7 human breast cancer cellsrdquoBiochemical Pharmacology vol 66 no 1 pp 63ndash73 2003

[63] E J Choo Y-H Rhee S-J Jeong et al ldquoAnethole exertsantimetatstaic activity via inhibition of matrix metallopro-teinase 29 and AKTmitogen-activated kinasenuclear factorkappa B signaling pathwaysrdquo Biological and PharmaceuticalBulletin vol 34 no 1 pp 41ndash46 2011

[64] A D Marshall and J Caldwell ldquoInfluence of modulators ofepoxide metabolism on the cytotoxicity of trans-anethole infreshly isolated rat hepatocytesrdquo Food and Chemical Toxicologyvol 30 no 6 pp 467ndash473 1992

[65] M M Al-Harbi S Qureshi M Raza M M Ahmed A BGiangreco and A H Shah ldquoInfluence of anethole treatment onthe tumour induced by Ehrlich ascites carcinoma cells in paw ofSwiss albino micerdquo European Journal of Cancer Prevention vol4 no 4 pp 307ndash318 1995

[66] G B N Chainy S K Manna M M Chaturvedi and BB Aggarwal ldquoAnethole blocks both early and late cellularresponses transduced by tumor necrosis factor effect on NF-120581B AP-1 JNK MAPKK and apoptosisrdquo Oncogene vol 19 no25 pp 2943ndash2950 2000

[67] S G Kim A Liem B C Stewart and J A Miller ldquoNew studieson trans-anethole oxide and trans-asarone oxiderdquo Carcinogene-sis vol 20 no 7 pp 1303ndash1307 1999

[68] J-F Liao S-Y Huang Y-M Jan L-L Yu and C-F ChenldquoCentral inhibitory effects of water extract of Acori gramineirhizoma in micerdquo Journal of Ethnopharmacology vol 61 no 3pp 185ndash193 1998

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

PainResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

ToxicologyJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

BioMed Research International

Emergency Medicine InternationalHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Autoimmune Diseases

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Anesthesiology Research and Practice

ScientificaHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Pharmaceutics

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

MEDIATORSINFLAMMATION

of

Page 20: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

20 BioMed Research International

[69] MDGreca PMonaco L Previtera G Aliotta G Pinto andAPollio ldquoAllelochemical activity of phenylpropanes from Acorusgramineusrdquo Phytochemistry vol 28 no 9 pp 2319ndash2321 1989

[70] C H Park K H Kim I K Lee et al ldquoPhenolic constituents ofAcorus gramineusrdquo Archives of Pharmacal Research vol 34 no8 pp 1289ndash1296 2011

[71] H Ka H-J Park H-J Jung et al ldquoCinnamaldehyde inducesapoptosis by ROS-mediated mitochondrial permeability tran-sition in human promyelocytic leukemia HL-60 cellsrdquo CancerLetters vol 196 no 2 pp 143ndash152 2003

[72] S-T Chang P-F Chen and S-C Chang ldquoAntibacterial activityof leaf essential oils and their constituents from Cinnamomumosmophloeumrdquo Journal of Ethnopharmacology vol 77 no 1 pp123ndash127 2001

[73] D T Shaughnessy R W Setzer and D M DeMarini ldquoTheantimutagenic effect of vanillin and cinnamaldehyde on spon-taneous mutation in Salmonella TA104 is due to a reductionin mutations at GC but not AT sitesrdquo Mutation ResearchmdashFundamental and Molecular Mechanisms of Mutagenesis vol480-481 pp 55ndash69 2001

[74] W S Koh S Y Yoon B M Kwon T C Jeong K S Nam andM Y Han ldquoCinnamaldehyde inhibits lymphocyte proliferationand modulates T-cell differentiationrdquo International Journal ofImmunopharmacology vol 20 no 11 pp 643ndash660 1998

[75] L M Perry Medicinal Plants of East and Southeast AsiaAttributed Properties and Uses The MIT Press CambridgeMass USA 1980

[76] H-S Lee S-Y Kim C-H Lee and Y-J Ahn ldquoCytotoxicand mutagenic effects of Cinnamomum cassia bark-derivedmaterialsrdquo Journal of Microbiology and Biotechnology vol 14no 6 pp 1176ndash1181 2004

[77] B Oehler A Scholze M Schaefer and K Hill ldquoTRPA1 isfunctionally expressed in melanoma cells but is not criticalfor impaired proliferation caused by allyl isothiocyanate orcinnamaldehyderdquo Naunyn-Schmiedebergrsquos Archives of Pharma-cology vol 385 no 6 pp 555ndash563 2012

[78] E-H Chew A A Nagle Y Zhang et al ldquoCinnamaldehydesinhibit thioredoxin reductase and induce Nrf2 potential can-didates for cancer therapy and chemopreventionrdquo Free RadicalBiology and Medicine vol 48 no 1 pp 98ndash111 2010

[79] C Ekmekcioglu J Feyertag and W Marktl ldquoCinnamic acidinhibits proliferation and modulates brush border membraneenzyme activities in Caco-2 cellsrdquo Cancer Letters vol 128 no 2pp 137ndash144 1998

[80] L-T Ng and S-J Wu ldquoAntiproliferative activity of Cinnamo-mum cassia constituents and effects of pifithrin-alpha on theirapoptotic signaling pathways in Hep G2 cellsrdquo Evidence-BasedComplementary and Alternative Medicine vol 2011 Article ID492148 6 pages 2011

[81] S-J Wu L-T Ng and C-C Lin ldquoCinnamaldehyde-inducedapoptosis in human PLCPRF5 cells through activation of theproapoptotic Bcl-2 family proteins and MAPK pathwayrdquo LifeSciences vol 77 no 8 pp 938ndash951 2005

[82] J M Dornish E O Pettersen and R Oftebro ldquoSynergistic cellinactivation of human NHIK 3025 cells by cinnamaldehyde incombination with cis-diamminedichloroplatinum(II)rdquo CancerResearch vol 48 no 4 pp 938ndash942 1988

[83] J-H Zhang L-Q Liu Y-L He W-J Kong and S-A HuangldquoCytotoxic effect of trans-cinnamaldehyde on human leukemiaK562 cellsrdquo Acta Pharmacologica Sinica vol 31 no 7 pp 861ndash866 2010

[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983

[85] H Niknahad A Shuhendler G Galati et al ldquoModulatingcarbonyl cytotoxicity in intact rat hepatocytes by inhibiting car-bonylmetabolizing enzymes II Aromatic aldehydesrdquoChemico-Biological Interactions vol 143-144 pp 119ndash128 2003

[86] G G Hatch T M Anderson R A Lubet et al ldquoChemicalenhancement of SA7 virus transformation of hamster embryocells evaluation by interlaboratory testing of diverse chemicalsrdquoEnvironmental Mutagenesis vol 8 no 4 pp 515ndash531 1986

[87] A Stammati P Bonsi F Zucco R Moezelaar H-L Alakomiand A Von Wright ldquoToxicity of selected plant volatiles inmicrobial and mammalian short-term assaysrdquo Food and Chem-ical Toxicology vol 37 no 8 pp 813ndash823 1999

[88] L-Y Chuang J-Y Guh L K Chao et al ldquoAnti-proliferativeeffects of cinnamaldehyde on human hepatoma cell linesrdquo FoodChemistry vol 133 no 4 pp 1603ndash1610 2012

[89] J-Q Huang X-X Luo S-W Wang and Y-H Xie ldquoEffectof cinnamaldehyde on activity of tumor and immunologicalfunction of S180 sarcoma in micerdquo Chinese Journal of ClinicalRehabilitation vol 10 no 11 pp 107ndash110 2006

[90] E-Y Moon M-R Lee A-G Wang et al ldquoDelayed occurrenceof H-ras12V-induced hepatocellular carcinoma with long-termtreatmentwith cinnamaldehydesrdquoEuropean Journal of Pharma-cology vol 530 no 3 pp 270ndash275 2006

[91] J A Hoskins ldquoThe occurrence metabolism and toxicity ofcinnamic acid and related compoundsrdquo Journal of AppliedToxicology vol 4 no 6 pp 283ndash292 1984

[92] Y Zhang X Y Yang Z S Kunag and C Xiao ldquoInhibitoryeffect of cinnamic acid germanium on growth of uterocervicalcarcinoma (U14) cells in micerdquo Linchuang Yu Shiyan BinglixueZazhi vol 26 pp 467ndash470 2010

[93] L P Zhang and Z Z Ji ldquoSynthesis antiinflammatory andanticancer activity of cinnamic acids their derivatives andanaloguesrdquo Acta Pharmaceutica Sinica vol 27 no 11 pp 817ndash823 1992

[94] L Liu W R Hudgins S Shack M Q Yin and D SamidldquoCinnamic acid a natural product with potential use in cancerinterventionrdquo International Journal of Cancer vol 62 no 3 pp345ndash350 1995

[95] Q Zhang Y Wang W Chai et al ldquoInduced-differentiationeffects of cinnamic acid on human osteogenic sarcoma cellscultured primarily in vitrordquo Zhonghua Zhongliu Fangzhi Zazhivol 16 no 9 pp 668ndash672 2009

[96] V C G Soares C Bonacorsi A L B Andrela et al ldquoCytotox-icity of active ingredients extracted from plants of the BrazilianlsquoCerradorsquordquo Natural Product Communications vol 6 no 7 pp983ndash984 2011

[97] E Bemani F Ghanati L Y Boroujeni and F Khatami ldquoAntiox-idant activity total phenolics and taxol contents response ofhazel (Corylus avellana L) cells to benzoic acid and cinnamicacidrdquo Notulae Botanicae Horti Agrobotanici Cluj-Napoca vol40 no 1 pp 69ndash73 2012

[98] H D Gravina N F Tafuri A Silva Junior et al ldquoIn vitroassessment of the antiviral potential of trans-cinnamic acidquercetin and morin against equid herpesvirus 1rdquo Research inVeterinary Science vol 91 no 3 pp e158ndashe162 2011

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

PainResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

ToxicologyJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

BioMed Research International

Emergency Medicine InternationalHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Autoimmune Diseases

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Anesthesiology Research and Practice

ScientificaHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Pharmaceutics

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

MEDIATORSINFLAMMATION

of

Page 21: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

BioMed Research International 21

[99] K Ito T Nakazato M J Xian et al ldquo11015840-acetoxychavicol acetateis a novel nuclear factor 120581B inhibitor with significant activityagainst multiple myeloma in vitro and in vivordquoCancer Researchvol 65 no 10 pp 4417ndash4424 2005

[100] A Kondo H Ohigashi A Murakami J Suratwadee and KKoshimizu ldquo11015840-Acetoxychavicol acetate as a potent inhibitorof tumor promoter-induced Epstein-Barr virus activation fromLanguas galanga a traditional Thai condimentrdquo BioscienceBiotechnology and Biochemistry vol 57 no 8 pp 1344ndash13451993

Submit your manuscripts athttpwwwhindawicom

PainResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

ToxicologyJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

BioMed Research International

Emergency Medicine InternationalHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Autoimmune Diseases

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Anesthesiology Research and Practice

ScientificaHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Pharmaceutics

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

MEDIATORSINFLAMMATION

of

Page 22: Review Article Antitumor Phenylpropanoids Found …downloads.hindawi.com/journals/bmri/2015/392674.pdfReview Article Antitumor Phenylpropanoids Found in Essential Oils AdrianaAndradeCarvalho,

Submit your manuscripts athttpwwwhindawicom

PainResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom

Volume 2014

ToxinsJournal of

VaccinesJournal of

Hindawi Publishing Corporation httpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AntibioticsInternational Journal of

ToxicologyJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

StrokeResearch and TreatmentHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Drug DeliveryJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Advances in Pharmacological Sciences

Tropical MedicineJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Medicinal ChemistryInternational Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

AddictionJournal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

BioMed Research International

Emergency Medicine InternationalHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Autoimmune Diseases

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Anesthesiology Research and Practice

ScientificaHindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Journal of

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

Pharmaceutics

Hindawi Publishing Corporationhttpwwwhindawicom Volume 2014

MEDIATORSINFLAMMATION

of