A family with severe insulin resistance and diabetes due to a mutation in AKT2.

A family with severe insulin resistance and diabetes due to a mutation in AKT2.
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DOI:
10.1126/science.1096706
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发表时间:
2004-05-28
期刊:
影响因子:
56.9
通讯作者:
Barroso, I
Barroso, I
中科院分区:
综合性期刊1区
文献类型:
--
作者:
George, S;Rochford, JJ;Wolfrum, C;Gray, SL;Schinner, S;Wilson, JC;Soos, MA;Murgatroyd, PR;Williams, RM;Acerini, CL;Dunger, DB;Barford, D;Umpleby, AM;Wareham, NJ;Davies, HA;Schafer, AJ;Stoffel, M;O'Rahilly, S;Barroso, I

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胰岛素受体下游信号通路的遗传缺陷一直被认为与人类2型糖尿病有关。在这里,我们描述了一个家族中编码蛋白激酶AKT2/PKBβ基因的突变,该突变显示出严重胰岛素抵抗和糖尿病的常染色体显性遗传。突变激酶在培养细胞中的表达破坏了胰岛素代谢终点的信号传导,抑制了共表达的野生型AKT的功能。这些发现证明了AKT信号对人类胰岛素敏感性的核心重要性。
Inherited defects in signaling pathways downstream of the insulin receptor have long been suggested to contribute to human Type 2 diabetes mellitus. Here we describe a mutation in the gene encoding the protein kinase AKT2/PKBβ in a family that shows autosomal dominant inheritance of severe insulin resistance and diabetes mellitus. Expression of the mutant kinase in cultured cells disrupted insulin signaling to metabolic end-points and inhibited the function of co-expressed, wild type AKT. These findings demonstrate the central importance of AKT signaling to insulin sensitivity in humans.
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