Circadian Homeostasis of Liver Metabolism Suppresses Hepatocarcinogenesis.

Circadian Homeostasis of Liver Metabolism Suppresses Hepatocarcinogenesis.
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DOI:
10.1016/j.ccell.2016.10.007
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发表时间:
2016-12-12
期刊:
影响因子:
50.3
通讯作者:
Fu L
Fu L
中科院分区:
医学1区
文献类型:
--
作者:
Kettner NM;Voicu H;Finegold MJ;Coarfa C;Sreekumar A;Putluri N;Katchy CA;Lee C;Moore DD;Fu L

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Chronic jet lag induces spontaneous hepatocellular carcinoma (HCC) in wild-type mice following a mechanism very similar to that observed in obese humans. The process initiates with non-alcoholic fatty liver disease (NAFLD) that progresses to steatohepatitis and fibrosis before HCC detection. This pathophysiological pathway is driven by jet lag induced genome-wide gene deregulation and global liver metabolic dysfunction, with nuclear receptor-controlled cholesterol/bile acid and xenobiotic metabolism among the top deregulated pathways. Ablation of farnesoid X receptor (FXR) dramatically increases enterohepatic bile acid levels and jet lag-induced HCC, while loss of constitutive androstane receptor (CAR), a well-known liver tumor promoter that mediates toxic bile acid signaling, inhibits NAFLD-induced hepatocarcinogenesis. Circadian disruption activates CAR by promoting cholestasis, peripheral clock disruption, and sympathetic dysfunction. Kettner et al. show that experimental chronic jet lag induces persistent deregulation of liver gene expression and metabolism, culminating in the development of hepatocellular carcinoma. The bile acid receptor FXR and xenobiotic receptor CAR play an important role in this process.
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