Fibroblast growth factor-21 regulates PPARγ activity and the antidiabetic actions of thiazolidinediones.
Fibroblast growth factor-21 regulates PPARγ activity and the antidiabetic actions of thiazolidinediones.
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DOI:
10.1016/j.cell.2011.11.062
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发表时间:
2012-02-03
期刊:
影响因子:
64.5
通讯作者:
Kliewer SA
中科院分区:
文献类型:
--
作者:
Dutchak PA;Katafuchi T;Bookout AL;Choi JH;Yu RT;Mangelsdorf DJ;Kliewer SA
Fibroblast growth factor-21 (FGF21) is a circulating hepatokine that beneficially affects carbohydrate and lipid metabolism. Here we report that FGF21 is also an inducible, fed-state autocrine factor in adipose tissue that functions in a feed-forward loop to regulate the activity of peroxisome proliferator-activated receptor γ (PPARγ), a master transcriptional regulator of adipogenesis. FGF21-knockout (KO) mice display defects in PPARγ signaling including decreased body fat and attenuation of PPARγ-dependent gene expression. Moreover, FGF21-KO mice are refractory to both the beneficial insulin-sensitizing effects and the detrimental weight gain and edema side effects of the PPARγ agonist rosiglitazone. This loss of function in FGF21-KO mice is coincident with a marked increase in the sumoylation of PPARγ, which reduces its transcriptional activity. Adding back FGF21 prevents sumoylation and restores PPARγ activity. Collectively, these results reveal FGF21 as a key mediator of the physiologic and pharmacologic actions of PPARγ.
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DOI:
10.1016/j.bbrc.2007.06.068
发表时间:
2007-08-24
影响因子:
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作者:
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