Adipose stem cells control obesity-induced T cell infiltration into adipose tissue
CELL REPORTS(2024)
Abstract
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 KB 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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Key words
ASCs,adipose tissue inflammation,obesity,T cells,CCL5
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