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| Status |
Public on Aug 22, 2022 |
| Title |
c-Myb instructs both stemness and functional exhaustion of CD8+ T cells during chronic infection [scRNA-seq] |
| Organism |
Mus musculus |
| Experiment type |
Expression profiling by high throughput sequencing
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| Summary |
Chronic viral infections and tumours are associated with CD8+ T cell exhaustion, which is characterized by high expression of inhibitory receptors such as programmed cell death protein 1 (PD-1) and impaired effector function. Understanding the molecular regulation of T cell exhaustion is critical for the development of new immunotherapies. Chronically activated T cells are maintained by precursors of exhausted T (TPEX) cells that express the transcription factor TCF1, self-renew and give rise to TCF-1– exhausted effector T (TEX) cells; this process is currently, however, poorly understood. Here, we reveal that TPEX cells are heterogenous and contain a population of CD62L+ stem-like exhausted T cells that selectively preserve long-term self-renewal capacity and multipotency of antigen-specific T cells during chronic infection. Furthermore, we show that the transcription factor c-Myb is essential for the development of CD62L+ TPEX cells, self-renewal of TPEX cells and the induction of key features of T cell exhaustion. Consequently, Myb-deficient CD8+ T cells show uninhibited cytokine production resulting in fatal immunopathology in response to chronic but not acute LCMV infection and fail to be maintained long-term. Finally, we show that c-Myb-dependent CD62L+ TPEX cells exclusively mediate T cell proliferation during PD-1 checkpoint inhibition and show enhanced antiviral properties, making them attractive targets for new immunotherapeutic strategies. Thus, our findings identify CD62L+ TPEX cells as central to the maintenance of exhausted T cell responses and reveal c-Myb as a key transcriptional orchestrator that combines two central aspects of T cell exhaustion, limitation of T cell function and long-term maintenance during chronic infection.
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| Overall design |
single cell RNA-sequencing of TCF7-GFP+ P14 T cells obtained from LCMV Clone 13 infected mice on day 28p.i.
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| Contributor(s) |
Tsui C, Kretschmer L, Rapelius S, Gabriel SS, Chisanga D, Knöpper K, Utzschneider DT, Nüssing S, Liao Y, Mason T, Torres S, Wilcox S, Kanev K, Jarosch S, Nutt SL, Zehn D, Parish I, Kastenmüller W, Shi W, Buchholz VR, Kallies A |
| Citation(s) |
35978192 |
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| Submission date |
Mar 31, 2022 |
| Last update date |
Sep 09, 2022 |
| Contact name |
Lorenz Kretschmer |
| E-mail(s) |
lorenz.kretschmer@tum.de
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| Organization name |
TU Munich
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| Department |
Institute for Medical Microbiology, Immunology and Hygiene
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| Lab |
Dr. Veit R. Buchholz
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| Street address |
Trogerstr. 30
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| City |
Munich |
| State/province |
Bavaria |
| ZIP/Postal code |
81675 |
| Country |
Germany |
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| Platforms (1) |
| GPL24247 |
Illumina NovaSeq 6000 (Mus musculus) |
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| Samples (1) |
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| This SubSeries is part of SuperSeries: |
| GSE205608 |
c-Myb instructs both stemness and functional exhaustion of CD8+ T cells during chronic infection |
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| Relations |
| BioProject |
PRJNA821678 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE199839_RAW.tar |
84.9 Mb |
(http)(custom) |
TAR (of LOOM, MTX, TSV) |
SRA Run Selector |
| Raw data are available in SRA |
| Processed data provided as supplementary file |
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