Poursharifi_2023_Mol.Metab__101822

Reference

Title : ABHD6 suppression promotes anti-inflammatory polarization of adipose tissue macrophages via 2-monoacylglycerol\/PPAR signaling in obese mice - Poursharifi_2023_Mol.Metab__101822
Author(s) : Poursharifi P , Schmitt C , Chenier I , Leung YH , Oppong AK , Bai Y , Klein LL , Al-Mass A , Lussier R , Abu-Farha M , Abubaker J , Al-Mulla F , Peyot ML , Madiraju SRM , Prentki M
Ref : Mol Metab , :101822 , 2023
Abstract :

OBJECTIVE: Pro-inflammatory polarization of adipose tissue macrophages (ATMs) plays a critical role in the pathogenesis of obesity-associated chronic inflammation. However, little is known about the role of lipids in the regulation of ATMs polarity and inflammation in response to metabolic stress. Deletion of alpha/beta-hydrolase domain-containing 6 (ABHD6), a monoacylglycerol (MAG) hydrolase, has been shown to protect against diet-induced obesity and insulin resistance. METHODS AND RESULTS: Here we investigated the immunometabolic role of macrophage ABHD6 in response to nutrient excess. Whole-body ABHD6 KO mice on high-fat diet showed lower susceptibility to systemic diet-induced inflammation. Moreover, in the setting of overnutrition, stromal vascular cells from gonadal fat of KO vs. control mice contained lower number of M1 macrophages and exhibited enhanced levels of metabolically activated macrophages (MMe) and M2 markers, oxygen consumption, and interleukin-6 (IL-6) release. Likewise, under in vitro nutri-stress condition, pharmacological inhibition of ABHD6 in MMe-polarized macrophages attenuated the expression and release of pro-inflammatory cytokines and M1 markers and induced the upregulation of lipid metabolism genes. ABHD6-inhibited MMe macrophages showed elevated levels of peroxisome proliferator-activated receptors (PPARs) and 2-MAG species. Notably, among different MAG species, only 2-MAG treatment led to increased levels of PPAR target genes in MMe macrophages. CONCLUSIONS: Collectively, our findings identify ABHD6 as a key component of pro-inflammatory macrophage activation in response to excess nutrition and implicate an endogenous macrophage lipolysis/2-MAG/PPARs cascade, as a lipid signaling and immunometabolic pathway, which favors the anti-inflammatory polarization of ATMs in obesity.

PubMedSearch : Poursharifi_2023_Mol.Metab__101822
PubMedID: 37838014
Gene_locus related to this paper: human-ABHD6 , mouse-ABHD6

Related information

Gene_locus human-ABHD6    mouse-ABHD6
Family human-ABHD6    mouse-ABHD6    ABHD6-Lip

Citations formats

Poursharifi P, Schmitt C, Chenier I, Leung YH, Oppong AK, Bai Y, Klein LL, Al-Mass A, Lussier R, Abu-Farha M, Abubaker J, Al-Mulla F, Peyot ML, Madiraju SRM, Prentki M (2023)
ABHD6 suppression promotes anti-inflammatory polarization of adipose tissue macrophages via 2-monoacylglycerol\/PPAR signaling in obese mice
Mol Metab :101822

Poursharifi P, Schmitt C, Chenier I, Leung YH, Oppong AK, Bai Y, Klein LL, Al-Mass A, Lussier R, Abu-Farha M, Abubaker J, Al-Mulla F, Peyot ML, Madiraju SRM, Prentki M (2023)
Mol Metab :101822