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. 2025 Aug;26(8):1367-1383.
doi: 10.1038/s41590-025-02219-2. Epub 2025 Jul 29.

Lymph-node-derived stem-like but not tumor-tissue-resident CD8+ T cells fuel anticancer immunity

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Lymph-node-derived stem-like but not tumor-tissue-resident CD8+ T cells fuel anticancer immunity

Sharanya K M Wijesinghe et al. Nat Immunol. 2025 Aug.

Abstract

CD8+ T cell-mediated tumor control and efficacy of immune checkpoint blockade (ICB) are associated with both precursors of exhausted T (TPEX) cells and tissue-resident memory T cells. Their relationships and relative contribution to tumor control, however, are insufficiently understood. Using single-cell RNA sequencing and genetic mouse models, we systematically dissected the heterogeneity and function of cytotoxic T cells in tumors and tumor-draining lymph nodes (tdLNs). We found that intratumoral TCF1+ TPEX cells and their progeny acquired a tissue-residency program that limits their contribution to tumor control and ICB response. By contrast, MYB-dependent stem-like TPEX cells residing in tdLNs sustained CD8+ T cell infiltration into tumors and mediated ICB response. The cytokine TGFβ was the central factor that enforced residency of intratumoral CD8+ T cells and limited the abundance of stem-like TPEX cells in tdLNs, thereby restraining tumor control. A similar network of TGFβ-constrained intratumoral and extratumoral CD8+ T cells with precursor and residency characteristics was found in human cancer.

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Conflict of interest statement

Competing interests: A.K. receives research support from Pfizer. N.D.H. is a founder and shareholder in oNKo-Innate and serves on advisory boards for Bristol Myers Squibb and Syena. T.G. was a scientific advisory board member of oNKo-Innate and received research funding from Merck Healthcare KGaA. E.L. is listed as the inventor on a patent on TSCM cells and received royalties related to that patent, received research funding from Bristol Myers Squibb on a topic unrelated to this paper and reports consulting fees from BD Biosciences, BioLegend, Swarm Oncology, Pfizer, Menarini and Astra Zeneca. All other authors declare no competing interests.

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