TBK1 at the Crossroads of Inflammation and Energy Homeostasis in Adipose Tissue.
TBK1 at the Crossroads of Inflammation and Energy Homeostasis in Adipose Tissue.
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DOI:
10.1016/j.cell.2018.01.007
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发表时间:
2018-02-08
期刊:
影响因子:
64.5
通讯作者:
Saltiel AR
中科院分区:
文献类型:
--
作者:
Zhao P;Wong KI;Sun X;Reilly SM;Uhm M;Liao Z;Skorobogatko Y;Saltiel AR
The noncanonical IKK family member TANK-binding kinase 1 (TBK1) is activated by pro-inflammatory cytokines, but its role in controlling metabolism remains unclear. Here we report that the kinase uniquely controls energy metabolism. Tbk1 expression is increased in adipocytes of HFD-fed mice. Adipocyte-specific TBK1 knockout (ATKO) attenuates HFD-induced obesity by increasing energy expenditure; further studies show that TBK1 directly inhibits AMPK to repress respiration and increase energy storage. Conversely, activation of AMPK under catabolic conditions can increase TBK1 activity through phosphorylation, mediated by AMPK’s downstream target ULK1. Surprisingly, ATKO also exaggerates adipose tissue inflammation and insulin resistance. TBK1 suppresses inflammation by phosphorylating and inducing the degradation of the IKK kinase NIK, thus attenuating NFκB activity. Moreover, TBK1 mediates the negative impact of AMPK activity on NFκB activation. These data implicate a unique role for TBK1 in mediating bi-directional crosstalk between energy sensing and inflammatory signaling pathways in both over- and under-nutrition. Adipose tissue inflammation plays an important role in reducing energy expenditure in obesity
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影响因子:
82.9
作者:
Arkan, MC;Hevener, AL;Karin, M
通讯作者:
Karin, M
DOI:
10.1152/physiol.00010.2011
发表时间:
2011-08
期刊:
Physiology (Bethesda, Md.)
影响因子:
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影响因子:
3.1
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通讯作者:
Kao, Shao-Hsuan
影响因子:
37.8
作者:
Hill JO;Wyatt HR;Peters JC
通讯作者:
Peters JC