Adipsin is an adipokine that improves β cell function in diabetes.

Adipsin is an adipokine that improves β cell function in diabetes.
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DOI:
10.1016/j.cell.2014.06.005
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发表时间:
2014-07-03
期刊:
影响因子:
64.5
通讯作者:
Spiegelman BM
Spiegelman BM
中科院分区:
生物学1区
文献类型:
--
作者:
Lo JC;Ljubicic S;Leibiger B;Kern M;Leibiger IB;Moede T;Kelly ME;Chatterjee Bhowmick D;Murano I;Cohen P;Banks AS;Khandekar MJ;Dietrich A;Flier JS;Cinti S;Blüher M;Danial NN;Berggren PO;Spiegelman BM

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A hallmark of type 2 diabetes mellitus (T2DM) is the development of pancreatic β cell failure, resulting in insulinopenia and hyperglycemia. We show that the adipokine adipsin has a beneficial role in maintaining β cell function. Animals genetically lacking adipsin have glucose intolerance due to insulinopenia; isolated islets from these mice have reduced glucose-stimulated insulin secretion. Replenishment of adipsin to diabetic mice treated hyperglycemia by boosting insulin secretion. We identify C3a, a peptide generated by adipsin, as a potent insulin secretagogue and show that the C3a receptor is required for these beneficial effects of adipsin. C3a acts on islets by augmenting ATP levels, respiration and cytosolic free Ca2+. Finally, we demonstrate that T2DM patients with β cell failure are deficient in adipsin. These findings indicate that the adipsin/C3a pathway connects adipocyte function to β cell physiology and manipulation of this molecular switch may serve as a novel therapy in T2DM.
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