Single Cell 3’ Solution CHROMIUM ™ Application Note 10xGenomics.com/single-cell
Single Cell 3’ SolutionCHROMIUM™
Application Note
10xGenomics.com/single-cell
2
IntroductionAdvances in single cell RNA quantification techniques have enabled comprehensive study of cell subpopulations within a heterogeneous population. We developed the GemCode™ Technology, which combines microfluidics with molecular barcoding and custom bioinformatics software to enable 3’ mRNA counting from thousands of single cells.
The Chromium™ Single Cell 3’ SolutionSingle cells, reagents and a single Gel Bead containing barcoded oligonucleotides are encapsulated into nanoliter-sized GEMs (Gel Bead in emulsion) using the GemCode Technology. Lysis and barcoded reverse transcription of polyadenylated mRNA from single cells are performed inside each GEM. High-quality next generation sequencing libraries are finished in single bulk reaction. Finally, the Chromium™ Software Suite is utilized for processing, analysis and visualization of single cell gene expression data.
Figure 1. Chromium™ Single Cell 3’ Solution.(a) Workflow schematic overview. (b) Formation of GEMs, RT takes place inside each GEM, which is then pooled for cDNA amplification and library construction in bulk. (c) v2 Single Cell Assay schematic overview.
10x BarcodedGel Beads
Collect
Single CellGEMs
10x BarcodedcDNA
10x BarcodedcDNA
RTPool
Remove Oil
CellsEnzyme
Transcriptional profiling of individual cells
Oil
Gene 1 Gene 2... Gene 2,000
Gene 1 Gene 2... Gene 2,000
Cell 1...
Cell 5,000
1 Molecular Barcoding in GEMs
Final Library Construct
2 Pool, Library Prep 3 Sequence and Analyze
RT
10xBarcode
Read 2
Read 1
cDNASample
Index P5P7
cDNA PCR, Shear, End-repair, A-tail, Ligate, SI-PCR
T
A
High-throughput single cell transcriptomic measurements enable discovery of gene expression dynamics for profiling individual cell types.
• Complete practical solution for single cell analysis
• Identify rare cell types in heterogeneous populations
• Encapsulate 100-80,000+ cells in 10 minutes
• Wide dynamic range
Single Cell 3’ SolutionCHROMIUM™
10x Genomics | LIT00002 Rev B Chromium™ Single Cell 3’ Solution Application Note
Alignment
BarcodeProcessing
Gene-cellMatrix
TranscriptCounting
Expression Analysis
Report
Cell Suspension
Barcoding & LibraryConstruction
Sequence Transcriptome Pipelines Report & Visualization
SequencingInput Library Construction Data VisualizationData AnalysisA.
B. C.
P5 10xBarcode
UMI Poly(dT)VN P7Read 2Read 1 SampleIndex
10x Genomics | LIT00002 Rev B Chromium™ Single Cell 3’ Solution Application Note 3
Immunology Application Major Subpopulations Observed Within
a Heterogeneous PBMC Sample In Zheng et al. (2017) clustering analysis was performed to dissect the heterogeneity of PBMCs using the v1 single cell reagents run on the GemCode™ System. Examination of the most variable genes in each cluster revealed many well-characterized markers for specific subpopulations of PBMCs. We scored ~68,000 PBMCs against the average expression profile of 10 bead-enriched purified PBMC subpopulations, and classified each cell based on its similarity to a purified population. Cell classification was mostly consistent with cell-marker based classification analysis.
Technical Performance We analyzed cell lines, peripheral blood mononuclear cell (PBMCs) and bone marrow mononuclear cells (BMMCs) to evaluate the technical performance of the Chromium Single Cell 3' Solution. To verify single cell encapsulation and sensitivity, a mixture of human 293T and mouse NIH/3T3 cells were profiled. 1,015 GEMs contained cells, of which 501 were human only, 514 were mouse only and 3 mixed, indicating an inferred multiplet rate of 0.6%. At ~60,000 reads/cell, a median of ~5,400 genes and ~33,100 transcripts were detected per cell.
Figure 3. Analysis of 68,000 fresh PBMCs using the v1 single cell reagents run on the GemCode™ System. (a) tSNE plot of 68,000 PBMCs. (b) Top variable genes from each of 10 clusters are normalized and presented in a heat map. Representative markers from each cluster are shown on the right, and the putative cluster ID is shown on the left. (c) tSNE plot of 68,000 PBMCs, with each cell colored by the cell type of purified PBMCs. Approximately 20,000 reads/cell in this experiment (adapted from Zheng et al., 2017).
A.
A.
B.
B.
C.
Figure 2. Technical performance. (a) Scatter plot of human and mouse transcript counts detected in GEMs from a mixture of 293T and NIH/3T3 cells. (b) Median genes detected per cell in a mixture of 293T and NIH/3T3 cells as a function of reads per cell.
Chromium™ Single Cell datasets available for download:
• 1.3 Million Brain Cells from E18 Mice
• Mixture of Human (HEK293T) and Mouse (NIH3T3) Cells
• PBMCs from a Healthy Donor
Access these and other single-cell datasets at: support.10xgenomics.com/single-cell/datasets
Figure 3a. b. j.
tSNE1
tSN
E2
1,000
10,000
Genes/Cell
Cou
nts
UMIs Counts/Cell
4: Naive CD4+
7: B
3: Memory and Reg T
9
CD8A
PTCRA
PF4
LGALS3
CD79A
10851 2647
1: Activated CD8+
8: Megakaryocytes
9: Monocytes andDendritic
10: B, Dendritic, T
SIGLEC7
GNLY
5: NK
GZMK
Normalized Expression
Clusters
c.
3
2: Naive CD8+
CCR10CD4CLEC4C
CD8BID3
6: CD8+
2-1
d. e.
1(9.3%)
2(31.2%)
3(17.0%)
4 (11.2%)
7 (5.7%)10
(0.5%)
5 (5.7%)
6 (12.5%)
9 (6.6%)
8(0.3%)
tSNE1
CD14+ Monocytes
Dendritic
CD56+ NK
CD8+ Cytotoxic T
Megakaryocytes
CD4+/CD25+ Reg TCD4+/CD45RO+ Memory T
CD8+/CD45 RA+ Naive Cytotoxic
CD4+/CD45 RA+/CD25- Naive TCD8+/CD45 RA+ Naive Cytotoxic
tSN
E2
CD19+ B Cells
-1
3
CD3D
tSN
E2
0
3
NKG7f.
0
6
CD8A
g.
0
3
CD16
tSNE1
h.FCER1A
0
3
i.
tSNE1
TNFRSF18
0
4
tSN
E2
S100A8
tSNE1
1(37%)
3(16%)
2(47%)
CD4+/CD25+ Reg T
1(37%)
3(16%)
2(47%)
1(37%)
3(16%)
2(47%)
Figure 3a. b. j.
tSNE1
tSN
E2
1,000
10,000
Genes/Cell
Cou
nts
UMIs Counts/Cell
4: Naive CD4+
7: B
3: Memory and Reg T
9
CD8A
PTCRA
PF4
LGALS3
CD79A
10851 2647
1: Activated CD8+
8: Megakaryocytes
9: Monocytes andDendritic
10: B, Dendritic, T
SIGLEC7
GNLY
5: NK
GZMK
Normalized Expression
Clusters
c.
3
2: Naive CD8+
CCR10CD4CLEC4C
CD8BID3
6: CD8+
2-1
d. e.
1(9.3%)
2(31.2%)
3(17.0%)
4 (11.2%)
7 (5.7%)10
(0.5%)
5 (5.7%)
6 (12.5%)
9 (6.6%)
8(0.3%)
tSNE1
CD14+ Monocytes
Dendritic
CD56+ NK
CD8+ Cytotoxic T
Megakaryocytes
CD4+/CD25+ Reg TCD4+/CD45RO+ Memory T
CD8+/CD45 RA+ Naive Cytotoxic
CD4+/CD45 RA+/CD25- Naive TCD8+/CD45 RA+ Naive Cytotoxic
tSN
E2
CD19+ B Cells
-1
3
CD3D
tSN
E2
0
3
NKG7f.
0
6
CD8A
g.
0
3
CD16
tSNE1
h.FCER1A
0
3
i.
tSNE1
TNFRSF18
0
4
tSN
E2
S100A8
tSNE1
1(37%)
3(16%)
2(47%)
CD4+/CD25+ Reg T
1(37%)
3(16%)
2(47%)
1(37%)
3(16%)
2(47%)
Figure 3a. b. j.
tSNE1
tSN
E2
1,000
10,000
Genes/Cell
Cou
nts
UMIs Counts/Cell
4: Naive CD4+
7: B
3: Memory and Reg T
9
CD8A
PTCRA
PF4
LGALS3
CD79A
10851 2647
1: Activated CD8+
8: Megakaryocytes
9: Monocytes andDendritic
10: B, Dendritic, T
SIGLEC7
GNLY
5: NK
GZMK
Normalized Expression
Clusters
c.
3
2: Naive CD8+
CCR10CD4CLEC4C
CD8BID3
6: CD8+
2-1
d. e.
1(9.3%)
2(31.2%)
3(17.0%)
4 (11.2%)
7 (5.7%)10
(0.5%)
5 (5.7%)
6 (12.5%)
9 (6.6%)
8(0.3%)
tSNE1
CD14+ Monocytes
Dendritic
CD56+ NK
CD8+ Cytotoxic T
Megakaryocytes
CD4+/CD25+ Reg TCD4+/CD45RO+ Memory T
CD8+/CD45 RA+ Naive Cytotoxic
CD4+/CD45 RA+/CD25- Naive TCD8+/CD45 RA+ Naive Cytotoxic
tSN
E2
CD19+ B Cells
-1
3
CD3D
tSN
E2
0
3
NKG7f.
0
6
CD8A
g.
0
3
CD16
tSNE1
h.FCER1A
0
3
i.
tSNE1
TNFRSF18
0
4
tSN
E2
S100A8
tSNE1
1(37%)
3(16%)
2(47%)
CD4+/CD25+ Reg T
1(37%)
3(16%)
2(47%)
1(37%)
3(16%)
2(47%)
CLL and AML BMMCs Show Expansion of Distinct PopulationsWe performed single cell analysis of frozen BMMCs from healthy controls, chronic lymphocytic leukemia (CLL) and AML patients. We observed a proliferation of B cells in the CLL sample, and a proliferation of myeloid progenitors in the AML sample, which is consistent with the disease pathology.
ConclusionWe performed high-throughput gene expression profiling of mRNAs in single cells using the Chromium Single Cell 3’ Solution. Our scalable approach enables detection of rare cells in a heterogeneous tumor population. Moreover, efficient cell capture enables analysis of clinically relevant sample types with limited cell input.
Literature Cited: Nature Communications doi:10.1038/NCOMMS14049
Cancer Application Comparison of Specific Subpopulations in AMLSingle cell profiling enables comparison of specific subpopulations in frozen PBMC samples from healthy controls and patients with acute myeloid leukemia (AML). This analysis revealed misregulation of the FLT3 pathway that would have been missed by bulk RNA-seq.
Stem Cell Application Major Subpopulations Among Intestinal Epithelial CellsTo collect intestinal epithelial cells (IECs), a 10cm segment of proximal jejunum was dissected and used to obtain dissociated single epithelial cells as described in Magness et al., 2013. Dead, hematopoietic and endothelial cells were removed, and remaining cells were positively selected with anti-EpCAM. Lgr5+ stem cells were obtained as described above, followed by FACS purification based on expression of Lgr5-green fluorescent protein. Clustering analysis was performed to dissect the heterogeneity of IECs. Examination of the cluster-specific genes revealed many well-characterized markers for subpopulations of IECs. The existence of stem cell population was confirmed by clustering analysis of Lgr5+ stem cells.
Figure 4. Single cell profiling from healthy and malignant tumor cell samples. Selection of myeloid populations in normal and AML PBMCs. Bottom graphs show an overlap of significant gene sets between bulk RNA-seq and myeloid-cell specific comparisons. Whereas the bulk comparison revealed expected pathways, such as upregulation of stem cell genes, the myeloid-specific comparison revealed upregulation of the FLT3 pathway.
14
Significant gene sets
Figure 5. Single cell profiling from healthy and malignant tumor cell samples. Single cell profiling of BMMCs from healthy, CLL and AML patients. ~30,000 reads/cell in this experiment.
CLL patient AML patientHealthy individual
10xGenomics.com | [email protected]© 2017 10x Genomics, Inc. FOR RESEARCH USE ONLY. Not for use in diagnostic procedures.
Additional Resourcessupport.10xgenomics.com/single-cell
C.
Figure 6. Analysis of ~2000 intestinal epithelial cells. (a) tSNE plot of ~1k IECs. (b) tSNE plot of ~1k Lgr5+ stem cells. (c) tSNE plot of ~1k IECs, with each cell colored by the normalized expression of markers; Ace: enterocytes (absorptive cells), Muc2: goblet cells, Mki67: proliferation marker (transit amplifying cells), Lgr5: stem cells, Chga: enteroendocrine cells and Ada: mucosal cells. ~10k reads/cell in IECs, and ~70k reads/cell in Lgr5+ stem cells.
tSN
E2
tSN
E2
tSNE1 tSNE1 tSNE1
Ace (enterocytes) Muc2 (goblet) Mki67 (proliferation)
Lgr5 (stem) Chga (enteroendocrine) Ada (mucosal)
0
6
0
60
0
3
0
2
0
40
0
50
tSN
E2
tSNE1 tSNE1
tSN
E2
intestinal epithelium
transit amplifying cells
enterocytes
goblet
paneth
mucosalmast cells
stemcells
enteroendocrinecells
Lgr5+ intestinal cellsA. B.
All Publications are Available at 10xgenomics.com/resources