Regulatory T cells promote adipocyte beiging in subcutaneous adipose tissue.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
Wenqian FangGuo-Ping Shi

Abstract

Regulatory T cells (Tregs) play essential roles in obesity and diabetes. Here, we report a role of Tregs in enhancing β3-adrenergic receptor agonist CL316243 (CL)-stimulated thermogenic program in subcutaneous adipose tissue (SAT), but not in visceral fat. CL treatment for 7 days increased SAT adipocyte beiging and thermogenic gene expression in male or female mice. Adoptive transfer of Tregs enhanced this CL activity. Such Treg activity lost in male epididymal white adipose tissue (eWAT) and female gonadal gWAT. Adipocyte culture yielded the same conclusion. Tregs enhanced the expression of CL-induced thermogenic genes in SAT from male and female mice. This activity of Tregs reduced or disappeared in adipocytes from eWAT or gWAT. Both CL and Tregs induced much higher UCP-1 (uncoupling protein-1) expression in SAT from females than that from males. A mechanistic study demonstrated a role of Tregs in suppressing the expression of M1 macrophage markers (Tnfa, Il6, iNos, Ip10) and promoting the expression of M2 macrophage markers (Mrc1, Arg1, Il10) in bone-marrow-derived macrophages or in SAT from male or female mice. In female mice with pre-established obesity, Treg adoptive transfer reduced the gWAT weight in 2 weeks. Together w...Continue Reading

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Dec 8, 2020·Frontiers in Cardiovascular Medicine·Ibrahim AlZaimAhmed F El-Yazbi
Mar 28, 2021·Nature Reviews. Immunology·Andrés R Muñoz-Rojas, Diane Mathis
Nov 28, 2021·Cellular & Molecular Immunology·Kevin ManAjithkumar Vasanthakumar

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