alpha/beta-Hydrolase Domain 6 Deletion Induces Adipose Browning and Prevents Obesity and Type 2 Diabetes.
Authors:
Zhao, S Mugabo, Y Ballentine, G Attane, C Iglesias, J Poursharifi, P Zhang, D Nguyen, TA Erb, H Prentki, R Peyot, ML Joly, E Tobin, S Fulton, S Brown, JM Madiraju, SR Prentki, M
Citation:
Zhao S, etal., Cell Rep. 2016 Mar 29;14(12):2872-88. doi: 10.1016/j.celrep.2016.02.076. Epub 2016 Mar 17.
Suppression of alpha/beta-domain hydrolase-6 (ABHD6), a monoacylglycerol (MAG) hydrolase, promotes glucose-stimulated insulin secretion by pancreatic beta cells. We report here that high-fat-diet-fed ABHD6-KO mice show modestly reduced food intake, decreased body weight gain and glycemia, improved glucose tolerance and insulin sensitivity, and enhanced locomotor activity. ABHD6-KO mice also show increased energy expenditure, cold-induced thermogenesis, brown adipose UCP1 expression, fatty acid oxidation, and white adipose browning. Adipose browning and cold-induced thermogenesis are replicated by the ABHD6 inhibitor WWL70 and by antisense oligonucleotides targeting ABHD6. Our evidence suggests that one mechanism by which the lipolysis derived 1-MAG signals intrinsic and cell-autonomous adipose browning is via PPARalpha and PPARgamma activation, and that ABHD6 regulates adipose browning by controlling signal competent 1-MAG levels. Thus, ABHD6 regulates energy homeostasis, brown adipose function, and white adipose browning and is a potential therapeutic target for obesity and type 2 diabetes.