Abstract
Farnesoid X receptor (FXR) ligands have been actively pursued to treat metabolic disorders, liver and bile diseases, among others. Starting from a widely occurring natural product, oleanolic acid (OA), we discovered potent and selective FXR modulator from the 12β-oxygenated OA alkyl esters, with the assistance of molecular modeling. The representative compound 7b modulated some FXR downstream genes involved in glucose and lipid metabolism in cells, and significantly improved hyperglycemia in KKay fat mice fed with high fat diet, through the reduction of mRNA expression of gluconeogenesis genes PEPCK and G6Pase. This study provides a new series of selective FXR modulator, as well as the in vitro and in vivo evidence for their potential to improve hyperglycemia in diabetic mice through FXR antagonism.
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