Farnesoid X receptor(FXR,also termed nuclear receptor NR1H4)is critically involved in the regulation of nascent bile formation and bile acid enterohepatic circulation.FXR and bile acids have been shown to play roles in liver regeneration and inflammatory responses.There is increasing evidence suggesting that FXR and the FXR signaling pathway are involved in the pathophysiology of a wide range of liver diseases,such as viral hepatitis,cirrhosis,and hepatocellular carcinoma(HCC).Here we discuss the latest discoveries of FXR functions with relevance to bile acid metabolism and HBVassociated HCC.More specifically,the goal of this review is to discuss the roles of FXR and bile acids in regulating HBV replication and how disregulation of the FXR-bile acid signaling pathway is involved in HBV-associated hepatocarcinogenesis.
