Regulation of PPARγ function by TNF-α

被引:147
作者
Ye, Jianping [1 ]
机构
[1] Louisiana State Univ, Pennington Biomed Res Ctr, Baton Rouge, LA 70808 USA
关键词
TNF-alpha; PPAR gamma; nuclear corepressor;
D O I
10.1016/j.bbrc.2008.07.068
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The nuclear receptor PPAR gamma is a lipid sensor that regulates lipid metabolism through gene transcription. Inhibition of PPAR gamma activity by TNF-alpha is involved in pathogenesis of insulin resistance, atherosclerosis, inflammation, and cancer cachexia. PPAR gamma activity is regulated by TNF-alpha at pre-translational and post-translational levels. Activation of serine kinases including IKK, ERK, JNK, and p38 may be involved in the TNF-regulation of PPAR gamma. Of the four kinases, IKK is a dominant signaling molecule in the TNF-regulation of PPAR gamma. IKK acts through at least two mechanisms: inhibition of PPAR gamma expression and activation of PPAR gamma corepressor. In this review article, literature is reviewed with a focus on the mechanisms of PPAR gamma inhibition by TNF-alpha. (C) 2008 Elsevier Inc. All rights reserved.
引用
收藏
页码:405 / 408
页数:4
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