期刊
CELL METABOLISM
卷 26, 期 4, 页码 686-+出版社
CELL PRESS
DOI: 10.1016/j.cmet.2017.08.016
关键词
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资金
- National Natural Science Foundation of China [31770936]
- Beijing Natural Science Foundation [5172016]
- National Key R&D Program of China [2017YFA0505800]
- Center for Life Sciences
- Institute for Immunology
- School of Medicine at Tsinghua University
- Thousand-Talent Young Investigator Program
Efferent signals from the central nervous system represent a key layer of regulation of white adipose tissue (WAT). However, the mechanism by which efferent neural signals control WAT metabolism remains to be better understood. Here, we exploit the volume fluorescence-imaging technique to visualize the neural arborizations in mouse inguinal WAT at single-fiber resolution. The imaging reveals a dense network of sympathetic arborizations that had been previously undetected by conventional methods, with sympathetic fibers being in close apposition to > 90% of adipocytes. We demonstrate that these sympathetic fibers originate from the celiac ganglia, which are activated by cold challenge. Sympathetic-specific deletion of TrkA receptor or pharmacologic ablation by 6-hydroxydopamine abolishes these intra-adipose arborizations and, as a result, cold-induced beiging of inguinal WAT. Furthermore, we find that local sympathetic arborizations function through beta-adrenergic receptors in this beiging process. These findings uncover an essential link connecting efferent neural signals with metabolism of individual adipocytes.
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