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ID 115048
Author
Sato, Hiroyasu The University of Tokyo|Tokyo Metropolitan Institute of Medical Science
Taketomi, Yoshitaka The University of Tokyo|Tokyo Metropolitan Institute of Medical Science
Miki, Yoshimi The University of Tokyo|Tokyo Metropolitan Institute of Medical Science
Murase, Remi The University of Tokyo|Tokyo Metropolitan Institute of Medical Science
Yamamoto, Kei Tokyo Metropolitan Institute of Medical Science|Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Murakami, Makoto The University of Tokyo|Tokyo Metropolitan Institute of Medical Science|Japan Agency for Medical Research and Development
Content Type
Journal Article
Description
Polyunsaturated fatty acids (PUFAs) confer health benefits by preventing inflammation and obesity and by increasing thermogenesis in brown and beige adipocytes. As well as being supplied exogenously as nutrients, PUFAs are largely stored in membrane glycerophospholipids and released by phospholipase A2s (PLA2s). However, the molecular identity of the PLA2 subtype(s) that supplies endogenous PUFAs for metabolic homeostasis remains unclear. Here we show that PLA2G2D, a secreted PLA2 isoform, is constitutively expressed in M2-type macrophages in white adipose tissue (WAT) and shows a reciprocal correlation with obesity. Studies using global and macrophage-specific Pla2g2d-deficient mice reveal that PLA2G2D increases energy expenditure and thermogenesis by facilitating adipocyte browning, thereby ameliorating diet-induced obesity, insulin resistance, and WAT inflammation. Mechanistically, PLA2G2D constitutively supplies a pool of PUFAs, ω3 in particular, in WAT. Thus, our present findings underscore the contribution of the macrophage-driven PLA2G2D-ω3 PUFA axis to metabolic health.
Journal Title
Cell Reports
ISSN
22111247
Publisher
Elsevier
Volume
31
Issue
5
Start Page
107579
Published Date
2020-05-05
Rights
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Publisher
departments
Bioscience and Bioindustry