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Single-cell RNA-seq Reveals TOX as a Key Regulator of CD8 + T Cell Persistence in Chronic Infection (P14 T cells)

Yao, Chen, Sun, Hong-Wei, Lacey, Neal E, Ji, Yun, Moseman, E Ashley, Shih, Han-Yu, Heuston, Elisabeth F, Kirby, Martha, Anderson, Stacie, Cheng, Jun

Progenitor-like CD8+ T cells mediate long-term immunity to chronic infection and cancer and respond potently to immune checkpoint blockade. These cells share transcriptional regulators with memory precursor cells, including T cell-specific transcription factor 1 (TCF1), but it is unclear whether they adopt distinct programs to adapt to the immunosuppressive environment. By comparing the single-cell transcriptomes and epigenetic profiles of CD8+ T cells responding to acute and chronic viral infections, we found that progenitor-like CD8+ T cells became distinct from memory precursor cells before the peak of the T cell response. We discovered a coexpression gene module containing Tox that exhibited higher transcriptional activity associated with more abundant active histone marks in progenitor-like cells than memory precursor cells. Moreover, thymocyte selection-associated high mobility group box protein TOX (TOX) promoted the persistence of antiviral CD8+ T cells and was required for the programming of progenitor-like CD8+ T cells. Thus, long-term CD8+ T cell immunity to chronic viral infection requires unique transcriptional and epigenetic programs associated with the transcription factor TOX.

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Species: mouse
Number of cells: 16211
Number of downloads: 40
Study size: 518MB
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Cell development