Abstract
Terminal exhaustion is a critical barrier to antitumor immunity. By integrating and analyzing single-cell RNA-sequencing and single-cell assay for transposase-accessible chromatin with sequencing data, we found that ETS variant 7 (ETV7) is indispensable for determining CD8+ T cell fate in tumors. ETV7 introduction drives T cell differentiation from memory to terminal exhaustion, limiting antiviral and antitumor efficacy in male mice. Mechanistically, ETV7 acts as a central transcriptional node by binding to specific memory genes and exhaustion genes and functionally skewing these transcriptional programs toward exhaustion. Clinically, ETV7 expression is negatively correlated with progression and responsiveness to immune checkpoint blockade in various human cancers. ETV7 depletion strongly enhances the antitumor efficacy of CD8+ T cells and engineered chimeric antigen receptor T cells in solid tumors. Thus, these findings demonstrate a decisive role for ETV7 in driving CD8+ T cell terminal exhaustion and reveal that ETV7 may be a promising target and biomarker for improving the efficacy of cancer immunotherapy.
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Data availability
All data supporting the findings of this study are available within the article and its Supplementary Information files and from the corresponding authors upon reasonable request. The FACS gating strategies are described in Supplementary Fig. 1. This paper does not report any original code. All scRNA-seq and scATAC-seq data used in this study were obtained from previously published data and were reanalyzed here. We have permission to use all data. No new data were generated in this study. The processed Seurat object of pan-cancer CD8+ T cells was downloaded from Gene Expression Omnibus (GEO) under accession code GSE156728. Processed scATAC-seq fragment files were downloaded from GEO via accession codes GSE181062 and GSE129785. ESCA scRNA-seq data were downloaded using GEO accession code GSE160269. scRNA-seq data of anti-CD19 CAR T cells were downloaded from GEO accession code GSE151511. scRNA-seq data of anti-PD1-treated melanoma immune cells were downloaded from GEO accession code GSE120575. Bulk RNA-seq data for the TCGA ESCA/UCEC/PACA cohort were obtained through the Broad GDAC Firehose (https://gdac.broadinstitute.org/). scRNA-seq data of T cells from individuals infected with SARS-CoV-2 were downloaded from GEO accession code GSE158055. scRNA-seq data of T cells from individuals infected with HBV were downloaded from GEO accession code GSE182159. Images in Figs. 1a,f, 3d, 4e, 5a and 6a and Extended Data Figs. 4a,e and 10i) were generated using BioRender.com under Academic License Terms with agreement numbers KH27FESCLA, KJ27FETVUI and AL27L9XLPG. Further information on research design is available in the Nature Research Reporting Summary linked to this article. Source data are provided with this paper.
Code availability
No software or algorithm was generated in this study. The code for reproducing major figures is available on GitHub (https://github.com/Ting-PKU/ETV7_project).
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Acknowledgements
We thank H. Wu for discussions, Z. Chang and the Animal Facility of Tsinghua University for help with mouse care and surgery and Y. Liu and the Tsinghua University Branch of China National Center for Protein Sciences (Beijing) and Tsinghua University Technology Center for flow cytometry support. We thank Z. Dong for kindly providing the L. monocytogenes strain that expresses the OVA epitope. We thank M. M. Xu for kindly providing P14 CD45.1 mice. LCMV strains Armstrong and clone 13 were kindly provided by L. Ye. We are also grateful to W. Zeng for the reagents and technical support. This research was supported by the National Natural Science Foundation of China (82125030 and 82341022) to P.J. T.P. and C.L. were supported by National Natural Science Foundation of China (32288102 and 32025006) and National Key Research and Development Program of China (2021YFA1100300). Part of the data analysis was performed on the High-Performance Computing Platform of the Center for Life Sciences, Peking University. H.Z. was supported by the National Science Foundation of China (82100193), J.C. was supported by the National Science Foundation of China (82403315), and Y.Q. was supported by the National Natural Science Foundation of China (82373235).
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J.C. and P.J. designed the experiments with the help of C.L. and H.Z. J.C. and Y.X. performed most experiments except those mentioned below. T.P., Z. Zhao, L.Z., Zemin Zhang and C.L. performed bioinformatics analyses and provided insightful discussion. Zijian Zhang performed the CAR T cell experiments. J.C. and Y.Q. performed patient sample collection and clinical analysis. Y.W., J.S., J.Y., Z.H. and J.W. provided technical assistance. J.C. organized and analyzed the data. P.J. supervised the research. J.C. and P.J. wrote the manuscript. All authors commented on the manuscript.
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P.J. and J.C. report a patent application related to this study. The other authors declare no competing interests.
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Extended data
Extended Data Fig. 1 ETV7 expression is robustly upregulated in exhausted CD8+ T cells in tumors and effect of ETV7 on the expression of memory and exhaustion genes CD8+ T cells.
a, Expression levels of memory and exhaustion genes along the differentiation trajectory of tumor-infiltrating CD8+ T cells. Cluster annotation is shown in Fig. 2d. b, Chromatin accessibility of memory and exhaustion score as well as signature genes along the differentiation trajectory of tumor-infiltrating CD8+ T cells from basal cell carcinoma samples. The cluster annotation is shown in Fig. 2b. c, Human naive CD8+ T cells were stimulated with anti-CD3/CD28 antibodies 4 times every 2 days or not (naive). ETV7 mRNA levels and protein expression (percentage of CD8+ T cells and mean fluorescence intensity, MFI) were determined by RT-PCR and FACS analysis, respectively (n = 4 biological independent replicates). d-f, Human naive CD8+ T cells were stimulated with anti-CD3/CD28 antibodies 4 times every 2 days or not (naive). The mRNA levels (d) and protein expression (e) (percentage of CD8+ T cells and mean fluorescence intensity, MFI) of memory and exhaustion genes were determined by RT-PCR and FACS analysis, respectively (n = 4 biological independent replicates). The mRNA levels of TFs were determined by RT-PCR analysis (f) (n = 4 biological independent replicates). g-j, Mouse naive CD8+ T cells were stimulated with anti-mouse CD3/CD28 antibodies for 24 hours and then transfected with lentivirus to overexpress the five candidates. The cells were then stimulated 3 times every two days and analyzed. The mRNA (g-h) and protein expression (i-j) in CD8+ T cells were determined by RT-PCR and FACS analysis, respectively (n = 4 biological independent replicates). All data are the mean ± SD. P-values are indicated. Significance was calculated by two-sided unpaired Student’s t-test.
Extended Data Fig. 2 Enhanced chromatin accessibility and expression of ETV7 during T cell terminal differentiation and a role for IFNβ and TCR stimulation in promoting ETV7 expression.
a, Genomic traces of aggregated bulk ATAC-seq data showing chromatin accessibility around ETV7 in different CD8+ T-cell clusters from melanoma (MELA) samples. Tex, exhausted T cells. The shaded bars in graphs mark peaks with the binding motif of ETV7. b, Correlation between ETV7 expression level and memory score (top panel) or exhaustion score (bottom panel) in ETV7+ CD8+ T cells from ESCA (esophageal cancer) and UCEC (uterine cervical endometrial cancer). p value was calculated by Pearson correlation analysis. c-e, JURKAT cells were cultured with IFNs or IFNβ (U/ml) for the indicated times. mRNA (c, d) and proteins (e) were analyzed by RT-PCR (n = 4 independent wells) or Western blot (the experiment was independently repeated three times with similar results). f, JURKAT cells were activated and treated with IFNβ for different concentrations and time. ETV7 proteins were analyzed by FACS (n = 4 biological independent replicates). g, Human CD8+ T cells were enriched from PBMCs and then activated. Then cells were treated with IFNβ. ETV7 proteins were analyzed by FACS (n = 4 biological independent replicates). h-j, Human CD8+ T cells were enriched from PBMCs and then activated for 24 hours. The mRNA and proteins were analyzed by RT-PCR or western blot and FACS, respectively. The experiment in (i) was independently repeated three times with similar results. k,l, Human CD8+ T cells were enriched from PBMCs and then activated for 24 hours. Then cells were treated with anti-CD3 antibody or/and IFNβ for different concentrations and time. The mRNA and proteins were analyzed by RT-PCR (k) or FACS (l), respectively. m, Human CD8+ T cells were enriched from PBMCs and then activated for 24 hours. Then ETV7 were overexpressed or knocked out. After three days, the mRNA was analyzed by RT-PCR (n = 4 biological independent replicates). All data are the mean ± SD. P-values are indicated. Significance was calculated by two-sided unpaired Student’s t-test.
Extended Data Fig. 3 Effect of ETV7 on the expression of memory and exhaustion genes in mouse and human CD8+ T cells.
a-d, Mouse naïve CD8+ T cells were stimulated with anti-mouse CD3/CD28 antibodies for 24 hours, then transfected with lentivirus expressing ETV7 or vector control and induced to terminal exhaustion as described in Fig. 1f. The protein level of ETV7 (percentage of CD8+ T cells and MFI) was determined by FACS analysis (a). mRNA was detected by RT-PCR (b) (memory genes, left panel; exhaustion genes, right panel). The protein expression of memory genes (c) and exhaustion genes (d) were determined by FACS analysis. n = 4 biological independent replicates). The experiment was independently repeated three times with similar results. e-h, Human naive CD8+ T cells were enriched from peripheral blood mononuclear cells and then stimulated with anti-human CD3/CD28 antibodies for 24 hours. Cells were transfected with shETV7 lentiviruses or vector control (shCtrl) virus and induced to terminal exhaustion. Cells were stimulated three times every two days and ETV7 protein levels were determined by FACS analysis (e). RT-PCR analysis was used to detect mRNA levels (f) (n = 4 biological independent replicates). and FACS analysis was used to detect protein levels of memory (g) and exhaustion (h) proteins (n = 4 biological independent replicates). All data are the mean ± SD. P-values are indicated. Significance was calculated by two-sided unpaired Student’s t-test.
Extended Data Fig. 4 ETV7 promotes CD8+ T cell exhaustion in vivo during acute infections.
a-d, Experimental schemes for Listeria monocytogenes infection. Naïve OT-1 CD8+ T cells were enriched from OT-1 mice and transfected with lentivirus expressing ETV7 or vector control. The cells were then adoptively transferred into CD45.1 host mice. After infusion, the mice were infected with Lm-OVA. CD45.2 OT-1 CD8+ T cells from the spleen were analyzed on days 0 to 22 post infection (a). Memory markers (CXCR4, CXCR5 and TCF1) (b), exhaustion markers (PD1, TOX, TIM3 and LAG3) (c), and CD45.1+CD8+ T cells (d) were analyzed by FACS (n = 4 biological independent replicates). e-g, Experimental schemes for infection with Armstrong. Naïve CD45.1 P14 CD8+ T cells were enriched from P14 mice and transfected with lentivirus expressing ETV7 or vector control. The cells were then adoptively transferred into CD45.2 host mice. After infusion, mice were infected with Armstrong. CD45.1 P14 CD8+ T cells from the spleen were analyzed on days 0 to 22 post infection (e). Memory markers (CXCR4, CXCR5 and TCF1) (left panel) and exhaustion markers (PD1, TOX, TIM3 and LAG3) (right panel) were analyzed by FACS (f). TCF1+TIM3−CD8+T cells and TCF1−TIM3+CD8+ T cells were analyzed by FACS (g) (n = 4 biological independent replicates). All data are the mean ± SD. P-values are indicated. Significance was calculated by two-sided unpaired Student’s t-test.
Extended Data Fig. 5 ETV7 increases functional exhaustion of CD8+ T cells during infection in mice and humans.
a-c, Related to Extended Data Fig. 4e. Naïve CD45.1 P14 CD8+ T cells were enriched from P14 mice and transfected with lentivirus expressing ETV7 or vector control. The cells were then adoptively transferred into CD45.2 host mice. After infusion, mice were infected with Armstrong. CD45.1 P14 CD8+ T cells from the spleen were analyzed on days 0 to 22 post infection. GP33 tetramer+CD45.1+ cells (a) and cytokine expression (IFNγ and TNFα) (b) were analyzed by FACS after infected by Armstrong. Viral load in spleen were detected by RT-PCR according to previous protocol127 (c). n = 4 mice per group. The experiment was independently repeated three times with similar results. d, Naïve CD45.1 P14 CD8+ T cells were enriched from P14 mice and transfected with lentivirus expressing ETV7 or vector control. The cells were then adoptively transferred into CD45.2 host mice. After infusion, mice were infected with Clone 13. TCF1 + TIM3−CD8+ T cells and TCF1−TIM3+CD8+ T cells were analyzed by FACS (n = 4 mice per group). The experiment was independently repeated three times with similar results. e, f, UMAP visualization showing the level of memory score (left panel), exhaustion score (middle panel), and expression level of ETV7 (right panel) in CD8+ T cell clusters from scRNA-seq datasets of COVID-19 infected patients (e). Correlation between the mean expression level of ETV7 and mean memory score (left panel) or exhaustion score (right panel) in all CD8+ T cells from scRNA-seq datasets of COVID-19 infected patients (f). P-values were calculated using Pearson correlation analysis and are indicated. All data are the mean ± SD. Significance was calculated by two-sided unpaired Student’s t-test.
Extended Data Fig. 6 ETV7 impacts mouse and human CD8+ T cell function in vitro.
a-e, Mouse naive CD8+ T cells were stimulated and transfected with lentivirus for overexpression of ETV7 or vector as control. Cells were stimulated with different concentrations of antibodies (1x, 3.5 µgml−1 anti-CD3 and 1 µgml−1 anti-CD28 antibodies; 0.5x, 1.75 µgml−1 anti-CD3 and 0.5 µgml−1 anti-CD28 antibodies; 0.25x, 0.875 µgml−1 anti-CD3 and 0.25 µgml−1 anti-CD28 antibodies) for three times every two days. ETV7 protein levels were determined by FACS analysis (a). Expressions of exhaustion genes were detected by RT-PCR (b) or FACS analysis (c). The number of cells before each stimulation was counted (d), Ki67 protein level was analyzed by FACS (e) (n = 4 biological independent replicates). g, Mouse naive OT-I CD8+ T cells were stimulated with a OVA257-264 peptide and transfected with lentivirus, then stimulated with different concentrations of OVA257-264 peptide for two times every two days. Then OT-I cells were co-cultured with B16-OVA cells. The relative cytotoxicity was determined by measuring the LDHA release (left panel, n = 4 biological independent replicates). The percentage of Annexin V + B16-OVA cells (relative to total B16-OVA cells) were determined by FACS analysis (right panel, n = 4 biological independent replicates). f,h,i, Mouse naive CD8+ T cells were stimulated with different concentrations of antibodies as in a-f and subjected to RT-PCR (h) or FACS (f, i) analysis to determine cytokine levels (n = 4 biological independent replicates). j,k, Mouse naive CD8+ T cells were stimulated and transfected. Cell death was determined by 7AAD (j) and Annexin V staining (k) (n = 4 biological independent replicates). l-n, Human naive CD8+ T cells were enriched from PBMCs and stimulated. Cells were transfected with shETV7 lentiviruses or vector control (shCtrl) virus. Cells were stimulated with different concentrations of antibodies as in a-f. The number of cells before each stimulation was counted (m). The mRNA (l) and protein (n) levels of cytokines were detected by RT-PCR or FACS analysis (n = 4 biological independent replicates). All data are the mean ± SD. P-values are indicated. Significance was calculated by two-sided unpaired Student’s t-test.
Extended Data Fig. 7 ETV7 drives CD8+ T cell exhaustion program in MC38 OVA tumor model and effect of CD4+ T cells and identification in bone marrow chimera experiment.
a-c, C57BL/6 mice were injected subcutaneously with 2 × 105 MC38 OVA cells and immunodepleted by irradiation (2.5 Gy, twice). Naive OT-I CD8+ T cells were stimulated with OVA257-264 peptide for 24 hours and transfected with lentivirus for overexpression of ETV7 or vector as control (a). OT-I CD8+ T cells were then adoptively transferred by tail vein injection (i.v.) and injected intraperitoneally (i.p.). Tumor loads were measured (b). Protein expression (the percentage of CD8+ T cells as well as MFI) in tumor-infiltrating CD8+ T cells, including ETV7 (a), memory proteins, and exhaustion proteins was measured by FACS analysis (c) (n = 6 mice per group). d-f, C57BL/6 mice were injected intraperitoneally (i.p.) with 200 μg of α-CD4 antibody (clone GK1.5) or PBS twice a week to deplete CD4+ T cells or not. 7 days later, the mice were subcutaneously injected with 2×106 B16-OVA cells. Naive OT-I CD8+ T cells were stimulated with OVA257-264 peptide for 24 hours and transfected with lentivirus for overexpression of ETV7 or vector as control. After 3 days, OT-I CD8+ T cells were adoptively transferred by tail vein injection (i.v.). CD4+ T cells in spleen were analyzed by FACS (d). Tumors were photographed and weighed (e). The percentage and MFI of memory proteins and exhaustion proteins (f) were measured by FACS analysis (n = 5 mice per group). g, Related to Fig. 6. Mice were treated as described in Fig. 6a. Peripheral blood (10 µl) was collected and analyzed for lineage distribution and of B cells (B220+), T cells (CD3+), and myeloid cells (B220− CD3−) were analyzed by FACS at the 1st and 2nd month (n = 5 mice per group). Data are the mean ± SD. P-values are indicated. Significance was calculated by two-sided unpaired Student’s t-test.
Extended Data Fig. 8 Expression of ETV7 in different types of cells in tumors and correlation of its expression levels with survival in human cancer patients.
a,b, Related to Fig. 6a. LSK (Lineage− Sca1+ cKit+) cells were enriched and sorted and subjected by lentiviral transduction of ETV7 overexpression or vector as control. 72 h later, 2×104 GFP+ cells (CD45.2) were sorted and injected into lethally irradiated recipients (10 Gy) recipient mice (CD45.1/2). At the 2nd month, mice were subcutaneously injected with 5 × 105 B16 cells. Protein expression of ETV7 in tumor-infiltrating CD8+ T cells (a) as well as CD8+ T cells in tumor-draining lymph nodes (Td-LN) and spleens (b) were analyzed by FACS (n = 4 biological independent replicates). c, Percentage of ETV7+ T cells across different cancer types. Tex, exhausted T cells. d, Mean expression level of ETV7 in different cell types from ESCA (left panel) and UCEC (right panel) tumor tissues. e-g, The Kaplan-Meier curve plot shows that PAAD (e, ETV7 high, n = 91; ETV7 low, n = 92), LGG (f, ETV7 high, n = 81; ETV7 low, n = 82) and LAML (g, ETV7 high, n = 264; ETV7 low, n = 265) patients with higher expression of ETV7 had worse overall survival compared to those in the ETV7 low group. The p-value shown in the figure is the log-rank p-value. h, Mean expression level of ETV7 in CD8+ T cells of melanoma patients after anti-PD1 treatment were evaluated and grouped. R, response (n = 5), NR, non-response (n = 13). The p-value shown in the figure is the Wilcoxon rank sum test p-value. Detailed information in Supplementary Table 3. All data are the mean ± SD. P-values are indicated. Significance was calculated by two-sided unpaired Student’s t-test.
Extended Data Fig. 9 ETV7 orchestrates memory and exhaustion gene expression in CD8+ T cells of tumor patients and HCV infection patients.
a, b, Genomic traces of aggregated scATAC-seq data from basal cell carcinoma and renal cell carcinoma patients showing chromatin accessibility around CXCR4, EOMES, CXCR5, HAVCR2 and CXCL13 in memory and exhausted T (Tex) cell clusters. The location of the predicted binding motifs of ETV7 is marked at the bottom (a). The shaded bars in graphs mark peaks with the binding motif of ETV7. The p-value and location of the predicted binding motifs of ETV7 (b). c, Heatmap of opened and closed peaks with ETV7 binding motif from naïve, memory to exhaustion of CD8+ T cells from HCV infected patients. Targeted memory genes and exhaustion genes as well as ETV7 were shown (CCR4, TCF7, CTLA4, and TOX).
Extended Data Fig. 10 The expression of ETV7 is correlated with the expression of memory genes and exhaustion marker genes and generation of anti-MSLN CAR T-shETV7 therapeutic system.
a-c, Related to Fig. 7f and g. Mouse naive CD8+ T cells were stimulated with anti-mouse CD3/CD28 antibodies for 24 hours and then transfected with lentivirus for overexpression of ETV7 or vector control (Ctrl). The cells were then stimulated 3 times every two days to induce exhaustion. The mRNA levels (b) and protein (percentage of CD8+ T cells and MFI) (a, c) expression of TCF1, CTLA4, TOX, CXCR4, EOMES, CXCR5, CXCL13, LAG3, TIM3, and TNFRSF9 in CD8+ T cells were determined by RT-PCR and FACS analysis, respectively (n = 4 biological independent replicates). d, Pearson correlation coefficient between expression level of ETV7 and memory, exhaustion genes across different cancer types. e, Schematic illustration of the anti-MSLN CAR T-shCtrl, anti-MSLN CAR T-shETV7 constructs. f, Anti-MSLN CAR T cells stably overexpressing ETV7 shRNA (shRTV7) or vector control (shCtrl) were lysed for RT-PCR (n = 3 biological independent replicates) and WB. The experiment was independently repeated three times with similar results. g, Total number of cells at the time of transduction with anti-MSLN CAR T-shCtrl and anti-MSLN CAR T-shETV7 (n = 3 biological independent replicates). h, Calcein release assay was used for in vitro cytotoxicity testing at 3 different effectors: target ratios on K562 overexpressing human MSLN stability cell lines as indicated (n = 3 biological independent replicates). i-k, Related to Fig. 8g–k. Schematic of the mouse model experiment (i). OVCAR8 cells were subcutaneously implanted into the flanks of NCG mice to establish a xenograft tumor model. The mice were then treated with 3×106 anti-MSLN CAR T-shCtrl cells, 3×106 anti-MSLN CAR T-shETV7 or T cells per mouse on day 8 after tumor cell injection. Tumor burden was monitored twice weekly using Vernier calipers (j) (n = 5–7 mice per group) Kaplan-Meier survival curves of OVCAR8 xenograft mice treated with anti-MSLN CAR T-shCtrl cells, anti-MSLN CAR T-shETV7 or T cells (k) (n = 7 mice per group). All data are the mean ± SD. P-values are indicated. Significance was calculated by two-sided unpaired Student’s t-test.
Supplementary information
Supplementary Information
Supplementary Fig. 1. Gating strategies used in FACS analysis.
Supplementary Tables 1–6
Supplementary Table 1. Antibodies. Supplementary Table 2. Commercial reagents. Supplementary Table 3. Cell lines, mice, bacteria and virus strains. Supplementary Table 4. Oligonucleotides. Supplementary Table 5. Software, algorithms and databases. Supplementary Table 6. Characteristics of all enrolled individuals.
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Cheng, J., Xiao, Y., Peng, T. et al. ETV7 limits the antiviral and antitumor efficacy of CD8+ T cells by diverting their fate toward exhaustion. Nat Cancer 6, 338–356 (2025). https://doi.org/10.1038/s43018-024-00892-0
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DOI: https://doi.org/10.1038/s43018-024-00892-0