Double-stranded RNA-dependent protein kinase links pathogen sensing with stress and metabolic homeostasis.

Double-stranded RNA-dependent protein kinase links pathogen sensing with stress and metabolic homeostasis.
复制标题

DOI:
10.1016/j.cell.2010.01.001
复制
发表时间:
2010-02-05
期刊:
影响因子:
64.5
通讯作者:
Hotamisligil GS
Hotamisligil GS
中科院分区:
生物学1区
文献类型:
--
作者:
Nakamura T;Furuhashi M;Li P;Cao H;Tuncman G;Sonenberg N;Gorgun CZ;Hotamisligil GS

文献摘要

参考文献

被引文献

相似文献

由于慢性炎症是肥胖的标志,整合营养和病原体感知途径的途径对理解胰岛素抵抗、2型糖尿病和其他慢性代谢病理的机制非常有兴趣。在这里,我们提供的证据表明,双链RNA依赖蛋白激酶(PKR)可以响应营养信号以及内质网(ER)应激,并协调其他关键炎症激酶(如c-Jun n -末端激酶(JNK))的活性,以调节胰岛素的作用和代谢。PKR也直接靶向和修饰胰岛素受体底物,从而将营养物质和胰岛素作用与确定的病原体反应系统结合起来。饮食性和遗传性肥胖的特点是脂肪和肝脏组织中PKR的显著激活,PKR的缺失减轻了小鼠因营养或能量过剩而导致的代谢恶化。这些发现表明PKR是炎症复合体的关键组成部分,对营养和细胞器功能障碍作出反应。
As chronic inflammation is a hallmark of obesity, pathways that integrate nutrient and pathogen sensing pathways are of great interest in understanding the mechanisms of insulin resistance, type 2 diabetes, and other chronic metabolic pathologies. Here, we provide evidence that double-stranded RNA dependent protein kinase (PKR) can respond to nutrient signals as well as endoplasmic reticulum (ER) stress and coordinate the activity of other critical inflammatory kinases such as the c-Jun N-terminal kinase (JNK) to regulate insulin action and metabolism. PKR also directly targets and modifies insulin receptor substrate and hence integrates nutrients and insulin action with a defined pathogen response system. Dietary and genetic obesity features marked activation of PKR in adipose and liver tissues and absence of PKR alleviates metabolic deterioration due to nutrient or energy excess in mice. These findings demonstrate PKR as a critical component of an inflammatory complex that responds to nutrients and organelle dysfunction.
DOI: 10.1074/jbc.m203564200
发表时间: 2002-10-11
影响因子: 4.8
作者:
Baltzis, D;Lit, SY;Koromilas, AE
通讯作者: Koromilas, AE
DOI: 10.1210/me.2003-0383
发表时间: 2004-08-01
影响因子: --
作者:
Gao, ZG;Zhang, XY;Ye, JP
通讯作者: Ye, JP
DOI: 10.1016/s0002-9440(10)61693-8
发表时间: 2001-07-01
影响因子: 6
作者:
Scarim, AL;Arnush, M;Corbett, JA
通讯作者: Corbett, JA
DOI: 10.2337/db08-1220
发表时间: 2009-03
期刊: Diabetes
影响因子: 7.7
作者:
Gregor MF;Yang L;Fabbrini E;Mohammed BS;Eagon JC;Hotamisligil GS;Klein S
通讯作者: Klein S
DOI: 10.1038/sj.onc.1204744
发表时间: 2001-09-13
期刊: ONCOGENE
影响因子: 8
作者:
Delhem, N;Sabile, A;Brechot, C
通讯作者: Brechot, C