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- W1967590067 abstract "Macrophages infiltrate adipose tissue in obesity and are involved in the induction of inflammation, thereby contributing to the development of obesity-associated metabolic disorders. Here, we show that the macrophage-derived soluble protein AIM is endocytosed into adipocytes via CD36. Within adipocytes, AIM associates with cytosolic fatty acid synthase (FAS), thereby decreasing FAS activity. This decreases lipid droplet size, stimulating the efflux of free fatty acids and glycerol from adipocytes. As an additional consequence of FAS inhibition, AIM prevents preadipocyte maturation. In vivo, the increase in adipocyte size and fat weight induced by high-fat diet (HFD) was accelerated in AIM-deficient (AIM(-)(/-)) mice compared to AIM(+/+) mice. Moreover, injection of recombinant AIM in AIM(-)(/-) mice suppresses the increase in fat mass induced by HFD. Interestingly, metabolic rates are comparable in AIM(-)(/-) and AIM(+/+) mice, suggesting that AIM specifically influences adipocyte status. Thus, this AIM function in adipocytes may be physiologically relevant to obesity progression." @default.
- W1967590067 created "2016-06-24" @default.
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- W1967590067 date "2010-06-01" @default.
- W1967590067 modified "2023-10-12" @default.
- W1967590067 title "Macrophage-Derived AIM Is Endocytosed into Adipocytes and Decreases Lipid Droplets via Inhibition of Fatty Acid Synthase Activity" @default.
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- W1967590067 doi "https://doi.org/10.1016/j.cmet.2010.04.013" @default.
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