Glucose and weight control in mice with a designed ghrelin O-acyltransferase inhibitor.
Glucose and weight control in mice with a designed ghrelin O-acyltransferase inhibitor.
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具有设计的生长素蛋白O-酰基转移酶抑制剂的小鼠中的葡萄糖和体重控制。
DOI:
10.1126/science.1196154
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发表时间:
2010-12-17
期刊:
影响因子:
--
通讯作者:
Cole PA
中科院分区:
文献类型:
--
作者:
Barnett BP;Hwang Y;Taylor MS;Kirchner H;Pfluger PT;Bernard V;Lin YY;Bowers EM;Mukherjee C;Song WJ;Longo PA;Leahy DJ;Hussain MA;Tschöp MH;Boeke JD;Cole PA
Ghrelin is a gastric peptide hormone that stimulates weight gain in vertebrates. The biological activities of ghrelin require octanoylation of the peptide on Ser3, an unusual post-translational modification that is catalyzed by the enzyme ghrelin O-acyltransferase (GOAT). Here, we describe the design, synthesis, and characterization of GO-CoA-Tat, a peptide-based bisubstrate analog that antagonizes GOAT. GO-CoA-Tat potently inhibits GOAT in vitro, in cultured cells, and in mice. Intraperitoneal administration of GO-CoA-Tat improves glucose tolerance and reduces weight gain in wild-type mice but not in ghrelin-deficient mice, supporting the concept that its beneficial metabolic effects are due specifically to GOAT inhibition. In addition to serving as a research tool for mapping ghrelin actions, GO-CoA-Tat may help pave the way for clinical targeting of GOAT in metabolic diseases.
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