Cell Reports (Mar 2024)

Adipose stem cells control obesity-induced T cell infiltration into adipose tissue

  • Xiyan Liao,
  • Qin Zeng,
  • Limin Xie,
  • Haowei Zhang,
  • Wanyu Hu,
  • Liuling Xiao,
  • Hui Zhou,
  • Fanqi Wang,
  • Wanqin Xie,
  • Jianfeng Song,
  • Xiaoxiao Sun,
  • Dandan Wang,
  • Yujin Ding,
  • Yayi Jiao,
  • Wuqian Mai,
  • Wufuer Aini,
  • Xiaoyan Hui,
  • Wei Liu,
  • Willa A. Hsueh,
  • Tuo Deng

Journal volume & issue
Vol. 43, no. 3
p. 113963

Abstract

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Summary: T cell infiltration into white adipose tissue (WAT) drives obesity-induced adipose inflammation, but the mechanisms of obesity-induced T cell infiltration into WAT remain unclear. Our single-cell RNA sequencing reveals a significant impact of adipose stem cells (ASCs) on T cells. Transplanting ASCs from obese mice into WAT enhances T cell accumulation. C-C motif chemokine ligand 5 (CCL5) is upregulated in ASCs as early as 4 weeks of high-fat diet feeding, coinciding with the onset of T cell infiltration into WAT during obesity. ASCs and bone marrow transplantation experiments demonstrate that CCL5 from ASCs plays a crucial role in T cell accumulation during obesity. The production of CCL5 in ASCs is induced by tumor necrosis factor alpha via the nuclear factor κB pathway. Overall, our findings underscore the pivotal role of ASCs in regulating T cell accumulation in WAT during the early phases of obesity, emphasizing their importance in modulating adaptive immunity in obesity-induced adipose inflammation.

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