Inositol pyrophosphates inhibit Akt signaling, thereby regulating insulin sensitivity and weight gain.

Inositol pyrophosphates inhibit Akt signaling, thereby regulating insulin sensitivity and weight gain.
复制标题

DOI:
10.1016/j.cell.2010.11.032
复制
发表时间:
2010-12-10
期刊:
影响因子:
64.5
通讯作者:
Snyder SH
Snyder SH
中科院分区:
生物学1区
文献类型:
--
作者:
Chakraborty A;Koldobskiy MA;Bello NT;Maxwell M;Potter JJ;Juluri KR;Maag D;Kim S;Huang AS;Dailey MJ;Saleh M;Snowman AM;Moran TH;Mezey E;Snyder SH

文献摘要

参考文献

被引文献

相似文献

肌醇焦磷酸IP7(5-二磷酸肌醇五磷酸),由三个肌醇六磷酸激酶(IP 6 Ks)家族形成,调节多种细胞活动。我们现在报道IP7是Akt的生理抑制剂,Akt是一种丝氨酸/苏氨酸激酶,分别通过GSK 3 β和mTOR途径调节葡萄糖稳态和蛋白质翻译。因此,Akt、mTOR和GSK 3 β信号传导在靶向缺失IP 6 K1的小鼠的骨骼肌、白色脂肪组织和肝脏中显著增强。IP7通过有效抑制Akt的PDK 1磷酸化来影响该途径,阻止其活化,从而影响胰岛素信号传导。IP 6 K1基因敲除小鼠表现出胰岛素敏感性,并且对高脂肪饮食或衰老引起的肥胖具有抗性。IP 6 K1的抑制可以提供肥胖和糖尿病的治疗方法。
The inositol pyrophosphate IP7 (5-diphosphoinositolpentakisphosphate), formed by a family of three inositol hexakisphosphate kinases (IP6Ks), modulates diverse cellular activities. We now report that IP7 is a physiologic inhibitor of Akt, a serine/threonine kinase which regulates glucose homeostasis and protein translation respectively via the GSK3β and mTOR pathways. Thus Akt, mTOR and GSK3β signaling are dramatically augmented in skeletal muscle, white adipose tissue, and liver of mice with targeted deletion of IP6K1. IP7 impacts this pathway by potently inhibiting the PDK1 phosphorylation of Akt, preventing its activation and thereby impacting insulin signaling. IP6K1 knockout mice manifest insulin sensitivity and are resistant to obesity elicited by high fat diet or aging. Inhibition of IP6K1 may afford a therapeutic approach to obesity and diabetes.
DOI: 10.1126/science.1124147
发表时间: 2006-05-12
期刊: SCIENCE
影响因子: 56.9
作者:
Cota, D;Proulx, K;Seeley, RJ
通讯作者: Seeley, RJ
DOI: 10.1016/j.cmet.2007.11.003
发表时间: 2008-02-01
期刊: CELL METABOLISM
影响因子: 29
作者:
Izumiya, Yasuhiro;Hopkins, Teresa;Walsh, Kenneth
通讯作者: Walsh, Kenneth
DOI: 10.1038/sj.ijo.0802907
发表时间: 2005-03-01
影响因子: 4.9
作者:
Farmer, SR
通讯作者: Farmer, SR
DOI: 10.1038/nature05482
发表时间: 2006-12-14
期刊: NATURE
影响因子: 64.8
作者:
Kahn, Steven E.;Hull, Rebecca L.;Utzschneider, Kristina M.
通讯作者: Utzschneider, Kristina M.
DOI: 10.1073/pnas.0306743102
发表时间: 2005-04-26
影响因子: 11.1
作者:
Jones, JR;Barrick, C;Magnuson, MA
通讯作者: Magnuson, MA