Characterization of sexual dimorphism in ANGPTL4 levels and function.

Autor:	Deng M; Nutrition, Metabolism, and Genomics group, Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands., Kersten S; Nutrition, Metabolism, and Genomics group, Division of Human Nutrition and Health, Wageningen University, Wageningen, The Netherlands; Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA. Electronic address: ahk4@cornell.edu.
Jazyk:	angličtina
Zdroj:	Journal of lipid research [J Lipid Res] 2024 Apr; Vol. 65 (4), pp. 100526. Date of Electronic Publication: 2024 Feb 29.
DOI:	10.1016/j.jlr.2024.100526
Abstrakt:	ANGPTL4 is an attractive pharmacological target for lowering plasma triglycerides and cardiovascular risk. Since most preclinical studies on ANGPTL4 were performed in male mice, little is known about sexual dimorphism in ANGPTL4 regulation and function. Here, we aimed to study potential sexual dimorphism in ANGPTL4 mRNA and protein levels and ANGPTL4 function. Additionally, we performed exploratory studies on the function of ANGPTL4 in the liver during fasting using Angptl4-transgenic and Angptl4-/- mice. Compared to female mice, male mice showed higher hepatic and adipose ANGPTL4 mRNA and protein levels, as well as a more pronounced effect of genetic ANGPTL4 modulation on plasma lipids. By contrast, very limited sexual dimorphism in ANGPTL4 levels was observed in human liver and adipose tissue. In human and mouse adipose tissue, ANGPTL8 mRNA and/or protein levels were significantly higher in females than males. Adipose LPL protein levels were higher in female than male Angptl4-/- mice, which was abolished by ANGPTL4 (over) expression. At the human genetic level, the ANGPTL4 E40K loss-of-function variant was associated with similar plasma triglyceride reductions in women and men. Finally, ANGPTL4 ablation in fasted mice was associated with changes in hepatic gene expression consistent with PPARα activation. In conclusion, the levels of ANGPTL4 and the magnitude of the effect of ANGPTL4 on plasma lipids exhibit sexual dimorphism. Nonetheless, inactivation of ANGPTL4 should confer a similar metabolic benefit in women and men. Expression levels of ANGPTL8 in human and mouse adipose tissue are highly sexually dimorphic, showing higher levels in females than males. Competing Interests: Conflicts of interest Kersten is a paid consultant for Lipigon. The other author declares that she has no conflicts of interest with the contents of this article. (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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