AMP-activated protein kinase α1 protects against diet-induced insulin resistance and obesity.
AMP-activated protein kinase α1 protects against diet-induced insulin resistance and obesity.
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作者：
Zhang W;Zhang X;Wang H;Guo X;Li H;Wang Y;Xu X;Tan L;Mashek MT;Zhang C;Chen Y;Mashek DG;Foretz M;Zhu C;Zhou H;Liu X;Viollet B;Wu C;Huo Y
AMP-activated protein kinase (AMPK) is an essential sensor of cellular energy status. Defects in the α2 catalytic subunit of AMPK (AMPKα1) are associated with metabolic syndrome. The current study investigated the role AMPKα1 in the pathogenesis of obesity and inflammation using male AMPKα1-deficent (AMPKα1−/−) mice and their wild-type (WT) littermates. After being fed a high-fat diet (HFD), global AMPKα1−/− mice gained more body weight and greater adiposity and exhibited systemic insulin resistance and metabolic dysfunction with increased severity in their adipose tissues compared with their WT littermates. Interestingly, upon HFD feeding, irradiated WT mice that received the bone marrow of AMPKα1−/− mice showed increased insulin resistance but not obesity, whereas irradiated AMPKα1−/− mice with WT bone marrow had a phenotype of metabolic dysregulation that was similar to that of global AMPKα1−/− mice. AMPKα1 deficiency in macrophages markedly increased the macrophage proinflammatory status. In addition, AMPKα1 knockdown enhanced adipocyte lipid accumulation and exacerbated the inflammatory response and insulin resistance. Together, these data show that AMPKα1 protects mice from diet-induced obesity and insulin resistance, demonstrating that AMPKα1 is a promising therapeutic target in the treatment of the metabolic syndrome.
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DOI：
10.1016/j.bbrc.2009.05.106
发表时间：
2009-08-14
影响因子：
3.1
作者：
Nath, Narender;Khan, Musfiquidin;Rattan, Ramandeep;Mangalam, Ashutosh;Makkar, Randhir S.;de Meester, Carloe;Bertrand, Luc;Singh, Inderjit;Chen, Yingjie;Viollet, Benoit;Giri, Shailendra
通讯作者：
Giri, Shailendra
影响因子：
4.8
作者：
Liu, Chao;Liang, Bin;Zou, Ming-Hui
通讯作者：
Zou, Ming-Hui
影响因子：
29
作者：
Baker RG;Hayden MS;Ghosh S
通讯作者：
Ghosh S
影响因子：
16.8
作者：
Kaminski DA;Randall TD
通讯作者：
Randall TD
影响因子：
37.8
作者：
Huo, YQ;Zhao, L;Ley, K
通讯作者：
Ley, K