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Müller, T.D. ; Müller, A.* ; Yi, C.-X. ; Habegger, K.M.* ; Meyer, C.W. ; Gaylinn, B.D.* ; Finan, B. ; Heppner, K.* ; Trivedi, C.* ; Bielohuby, M.* ; Abplanalp, W.* ; Meyer, F.* ; Piechowski, C.L.* ; Pratzka, J.* ; Stemmer, K. ; Holland, J.* ; Hembree, J.* ; Bhardwaj, N.* ; Raver, C.* ; Ottaway, N.* ; Krishna, R.* ; Sah, R.* ; Sallee, F.R.* ; Woods, S.C.* ; Perez-Tilve, D.* ; Bidlingmaier, M.* ; Thorner, M.O.* ; Krude, H.* ; Smiley, D.* ; DiMarchi, R.* ; Hofmann, S. ; Pfluger, P.T. ; Kleinau, G.* ; Biebermann, H.* ; Tschöp, M.H.

The orphan receptor Gpr83 regulates systemic energy metabolism via ghrelin-dependent and ghrelin-independent mechanisms.

Nat. Commun. 4:1968 (2013)
Publ. Version/Full Text Volltext DOI PMC
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The G protein-coupled receptor 83 (Gpr83) is widely expressed in brain regions regulating energy metabolism. Here we report that hypothalamic expression of Gpr83 is regulated in response to nutrient availability and is decreased in obese mice compared with lean mice. In the arcuate nucleus, Gpr83 colocalizes with the ghrelin receptor (Ghsr1a) and the agouti-related protein. In vitro analyses show heterodimerization of Gpr83 with Ghsr1a diminishes activation of Ghsr1a by acyl-ghrelin. The orexigenic and adipogenic effect of ghrelin is accordingly potentiated in Gpr83-deficient mice. Interestingly, Gpr83 knock-out mice have normal body weight and glucose tolerance when fed a regular chow diet, but are protected from obesity and glucose intolerance when challenged with a high-fat diet, despite hyperphagia and increased hypothalamic expression of agouti-related protein, Npy, Hcrt and Ghsr1a. Together, our data suggest that Gpr83 modulates ghrelin action but also indicate that Gpr83 regulates systemic metabolism through other ghrelin-independent pathways.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Glucocorticoid-induced Receptor ; Protein-coupled Receptors ; Jp05 Messenger-rna ; Rat-brain ; Expression ; Heterodimerization
Language english
Publication Year 2013
HGF-reported in Year 2013
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Journal Nature Communications
Quellenangaben Volume: 4, Issue: , Pages: , Article Number: 1968 Supplement: ,
Publisher Nature Publishing Group
Publishing Place London
Reviewing status Peer reviewed
Institute(s) Institute of Diabetes and Obesity (IDO)
Institute of Diabetes and Regeneration Research (IDR)
POF-Topic(s) 90000 - German Center for Diabetes Research
30201 - Metabolic Health
Research field(s) Helmholtz Diabetes Center
PSP Element(s) G-501900-221
G-502300-001
G-502390-001
PubMed ID 23744028
DOI 10.1038/ncomms2968
WOS ID WOS:000323624100036
Scopus ID 84891591021
Erfassungsdatum 2013-06-11
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