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. 2025 Jul 8;58(7):1725-1741.e9.
doi: 10.1016/j.immuni.2025.04.030. Epub 2025 May 26.

Enhancer-driven gene regulatory networks reveal transcription factors governing T cell adaptation and differentiation in the tumor microenvironment

Affiliations

Enhancer-driven gene regulatory networks reveal transcription factors governing T cell adaptation and differentiation in the tumor microenvironment

William D Green et al. Immunity. .

Abstract

Tumor-infiltrating lymphocytes (TILs) with a tissue-resident memory CD8+ T cell (Trm) phenotype are associated with improved patient outcomes in solid malignancies. To define programs governing the formation of Trm-like TIL, we performed paired single-cell RNA sequencing and single-cell ATAC sequencing of T cell receptor (TCR)-matched CD8+ T cells in models of infection and cancer. Enhancer-driven regulons assembled from multiomic profiling data revealed epigenetic and transcriptional programs regulating the formation of Trm-like TIL in relation to canonical exhausted and memory T cell states. The transcriptional regulator KLF2 repressed the formation of CD69+CD103+ Trm-like TIL and limited anti-tumor activity. Conversely, sustained expression of the transcription factor BATF enhanced formation of CD69+CD103+ TIL, contingent upon downregulation of KLF2. Transforming growth factor β (TGF-β) signaling and CD103 expression were necessary for Trm-like TIL formation, but BATF overexpression was sufficient to drive formation of CD69+CD103+ TIL in TGFBR2-silenced cells. These findings reveal mechanisms of Trm-like TIL differentiation and provide a framework for considering tissue residency in the context of CD8+ T cell heterogeneity in the tumor microenvironment.

Keywords: CD8(+) T cells; exhaustion; immune memory; infection; pancreatic cancer; single-cell multiomics; tissue-resident cells; tumor immunology; tumor-infiltrating lymphocytes.

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Conflict of interest statement

Declaration of interests G.D. is a paid consultant for Tessa Therapeutics, Catamaran, and Bellicum Pharmaceuticals and reports receiving commercial research grants from Cell Medica and Bluebird Bio.

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