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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
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
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
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[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
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[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
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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
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[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
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[43] T Ogiwara K Satoh Y Kadoma et al ldquoRadical scavengingactivity and cytotoxicity of ferulic acidrdquo Anticancer Researchvol 22 no 5 pp 2711ndash2717 2002
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[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
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[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
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[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
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20 BioMed Research International
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[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
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[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
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[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
[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
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
The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014
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
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
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
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[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
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[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
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[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
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
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
The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014
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
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
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
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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
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[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
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[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
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[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
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[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
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[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
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[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
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[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
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
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
The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014
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
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
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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
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[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
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[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001
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[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
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[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
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[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
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[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
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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
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[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
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
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
The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014
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
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
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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
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[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
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[34] H Babich A Stern and E Borenfreund ldquoEugenol cytotoxicityevaluated with continuous cell linesrdquo Toxicology in Vitro vol 7no 2 pp 105ndash109 1993
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[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
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[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
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[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
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[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
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[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
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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
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[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
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[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
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[84] K HMoon andM Y Pack ldquoCytotoxicity of cinnamic aldehydeon leukemia L1210 cellsrdquo Drug and Chemical Toxicology vol 6no 6 pp 521ndash535 1983
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[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
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
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
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
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
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
The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014
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
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
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
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[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
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[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
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[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
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
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
The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014
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
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
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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
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[31] Y Kashiwagi ldquoA cytotoxic study of eugenol and its ortho dimer(bis-eugenol)rdquoMeikai Daigaku Shigaku Zasshi vol 29 pp 176ndash188 2001
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[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
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[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
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[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
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[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
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[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
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[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
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[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
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[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
∙ 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
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
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[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
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[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
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[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
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[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
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[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
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[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
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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
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[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
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
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
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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
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[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
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[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
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[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
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[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
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
The Scientific World JournalHindawi Publishing Corporation httpwwwhindawicom Volume 2014
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
[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
[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
[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