Cell Reports (Jun 2024)

T-bet deficiency and Hic1 induction override TGF-β-dependency in the formation of CD103+ intestine-resident memory CD8+ T cells

  • Liwen Wang,
  • Shruti Mishra,
  • Kenneth Ka-Ho Fan,
  • Sara Quon,
  • Guo Li,
  • Bingfei Yu,
  • Wei Liao,
  • Yong Liu,
  • Xin Zhang,
  • Yuanzheng Qiu,
  • Yue Li,
  • Ananda W. Goldrath,
  • Chaoyu Ma,
  • Nu Zhang

Journal volume & issue
Vol. 43, no. 6
p. 114258

Abstract

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Summary: Transforming growth factor β (TGF-β) represents a well-established signal required for tissue-resident memory T cell (TRM) formation at intestinal surfaces, regulating the expression of a large collection of genes coordinately promoting intestinal TRM differentiation. The functional contribution from each TGF-β-controlled transcription factor is not entirely known. Here, we find that TGF-β-induced T-bet downregulation and Hic1 induction represent two critical events during intestinal TRM differentiation. Importantly, T-bet deficiency significantly rescues intestinal TRM formation in the absence of the TGF-β receptor. Hic1 induction further strengthens TRM maturation in the absence of TGF-β and T-bet. Our results reveal that provision of certain TGF-β-induced molecular events can partially replace TGF-β signaling to promote the establishment of intestinal TRMs, which allows the functional dissection of TGF-β-induced transcriptional targets and molecular mechanisms for TRM differentiation.

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