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γδ T cells and adipocyte IL-17RC control fat innervation and thermogenesis
Journal article   Open access   Peer reviewed

γδ T cells and adipocyte IL-17RC control fat innervation and thermogenesis

Bo Hu, Chengcheng Jin, Xing Zeng, Jon M Resch, Mark P Jedrychowski, Zongfang Yang, Bhavna N Desai, Alexander S Banks, Bradford B Lowell, Diane Mathis, …
Nature (London), Vol.578(7796), pp.610-614
02/2020
DOI: 10.1038/s41586-020-2028-z
PMCID: PMC7055484
PMID: 32076265
url
https://www.ncbi.nlm.nih.gov/pmc/articles/7055484View
Open Access

Abstract

The sympathetic nervous system innervates peripheral organs to regulate their function and maintain homeostasis, whereas target cells also produce neurotrophic factors to promote sympathetic innervation . The molecular basis of this bi-directional communication remains to be fully determined. Here we use thermogenic adipose tissue from mice as a model system to show that T cells, specifically γδ T cells, have a crucial role in promoting sympathetic innervation, at least in part by driving the expression of TGFβ1 in parenchymal cells via the IL-17 receptor C (IL-17RC). Ablation of IL-17RC specifically in adipose tissue reduces expression of TGFβ1 in adipocytes, impairs local sympathetic innervation and causes obesity and other metabolic phenotypes that are consistent with defective thermogenesis; innervation can be fully rescued by restoring TGFβ1 expression. Ablating γδ Τ cells and the IL-17RC signalling pathway also impairs sympathetic innervation in other tissues such as salivary glands. These findings demonstrate coordination between T cells and parenchymal cells to regulate sympathetic innervation.
Signal Transduction Transforming Growth Factor beta1 - metabolism Interleukin-17 - genetics Male Transforming Growth Factor beta1 - genetics Interleukin-17 - deficiency Organ Specificity Mice, Knockout Adipose Tissue - metabolism Interleukin-17 - metabolism Animals Sympathetic Nervous System - physiology Thermogenesis T-Lymphocytes - metabolism Adipocytes - metabolism Adipose Tissue - innervation Adipose Tissue, Brown - metabolism Mice Parenchymal Tissue - cytology

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