Asprosin is a centrally acting orexigenic hormone.

Mark McIntosh,'s picture
PubMed URL: 
http://www.ncbi.nlm.nih.gov/pubmed/29106398
Author: 
Chopra AR
Author List: 
Duerrschmid C
He Y
Wang C
Li C
Bournat JC
Romere C
Saha PK
Lee ME
Phillips KJ
Jain M
Jia P
Zhao Z
Farias M
Wu Q
Milewicz DM
Sutton VR
Moore DD
Butte NF
Krashes MJ
Xu Y
Chopra AR
Journal: 
Nat Med
PubMed ID: 
29106398
Pagination: 
1444-1453
Volume: 
23
Issue: 
12
Abstract: 
Asprosin is a recently discovered fasting-induced hormone that promotes hepatic glucose production. Here we demonstrate that asprosin in the circulation crosses the blood-brain barrier and directly activates orexigenic AgRPneurons via a cAMP-dependent pathway. This signaling results in inhibition of downstream anorexigenic proopiomelanocortin (POMC)-positive neurons in a GABA-dependent manner, which then leads to appetite stimulation and a drive to accumulate adiposity and body weight. In humans, a genetic deficiency in asprosin causes a syndrome characterized by low appetite and extreme leanness; this is phenocopied by mice carrying similar mutations and can be fully rescued by asprosin. Furthermore, we found that obese humans and mice had pathologically elevated concentrations of circulating asprosin, and neutralization of asprosin in the blood with a monoclonal antibody reduced appetite and body weight in obese mice, in addition to improving their glycemic profile. Thus, in addition to performing a glucogenic function, asprosin is a centrally acting orexigenic hormone that is a potential therapeutic target in the treatment of both obesity and diabetes.
Published Date: 
December, 2017

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