Protein tyrosine phosphatase receptor δ serves as the orexigenic asprosin receptor.

Protein tyrosine phosphatase receptor δ serves as the orexigenic asprosin receptor.
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DOI:
10.1016/j.cmet.2022.02.012
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发表时间:
2022-04-05
期刊:
影响因子:
29
通讯作者:
Chopra AR
Chopra AR
中科院分区:
生物学1区
文献类型:
--
作者:
Mishra I;Xie WR;Bournat JC;He Y;Wang C;Silva ES;Liu H;Ku Z;Chen Y;Erokwu BO;Jia P;Zhao Z;An Z;Flask CA;He Y;Xu Y;Chopra AR

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Asprosin is a fasting-induced glucogenic and centrally-acting orexigenic hormone. The olfactory receptor Olfr734 is known to be the hepatic receptor for asprosin that mediates its effects on glucose production, but the receptor for asprosin’s orexigenic function has been unclear. Here, we have identified Protein Tyrosine Phosphatase Receptor δ (Ptprd) as the orexigenic receptor for asprosin. Asprosin functions as a high-affinity Ptprd ligand in hypothalamic AgRP neurons, regulating the activity of this circuit in a cell autonomous manner. Genetic ablation of Ptprd results in a strong loss of appetite, leanness and an inability to respond to the orexigenic effects of asprosin. Ablation of Ptprd specifically in AgRP neurons causes resistance to diet-induced obesity. Introduction of the soluble Ptprd ligand binding domain in the circulation of mice suppresses appetite and blood glucose levels by sequestering plasma asprosin. Identification of Ptprd as the orexigenic asprosin-receptor creates a new avenue for development of anti-obesity therapeutics. We have identified Protein Tyrosine Phosphatase Receptor δ (Ptprd) as the receptor for the orexigenic activity of the hormone asprosin. Ptprd genetic ablation leads to loss of appetite, leanness and unresponsiveness to both endogenous and exogenous asprosin. And strikingly, treatment of mice with the soluble ligand binding domain of Ptprd suppresses appetite and blood glucose by sequestering plasma pools of asprosin.
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