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OLFR734 Mediates Glucose Metabolism as a Receptor of Asprosin.

Cell metabolism (2019-06-25)
Erwei Li, Haili Shan, Liqun Chen, Aijun Long, Yuanyuan Zhang, Yang Liu, Liangjie Jia, Fangchao Wei, Jinbo Han, Tong Li, Xiaohui Liu, Haiteng Deng, Yiguo Wang
RESUMO

Asprosin is a fasting-induced hormone that promotes glucose production in the liver and stimulates appetite in the hypothalamus by activating the cAMP signaling pathway via an unknown G protein-coupled receptor (GPCR). However, the bona fide receptor of Asprosin is unclear. Here, we have identified that the olfactory receptor OLFR734 acts as a receptor of Asprosin to modulate hepatic glucose production. Olfr734 knockout mice show a blunted response to Asprosin, including attenuated cAMP levels and hepatic glucose production, and improved insulin sensitivity. As Olfr734 deficiency dramatically attenuates both fasting and high-fat-diet-induced glucose production, our results demonstrate a critical role of OLFR734 as a receptor of Asprosin to maintain glucose homeostasis during fasting and in obesity.

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