The farnesoid X receptor (FXR) is a nuclear receptor that acts as a bile acid sensor, protecting cells and organs against bile acid toxicity and coordinating cholesterol metabolism, lipid homeostasis, and absorption of dietary fats and vitamins. Fexaramine is an FXR agonist (EC
50 = 25 nM) that demonstrates 100-fold increased affinity to FXR compared to endogenous bile acids and 3-fold increased potency compared to the high affinity FXR agonist GW 4064 (Item No.
10006611; EC
50 = 80 nM).
1 Fexaramine does not display activity at the following nuclear receptors: hRXRα, hPPARαγδ, mPXR, hPXR, hLXRα, hTRβ, hRARβ, mCAR, mERRγ, or hVDR.
1