25696-60-0

Biological Activity: Tauro-β-muricholic acid (TβMCA) is an orally active trihydroxylated bile acid and a competitive, reversible FXR antagonist (IC₅₀=40 μM). Tauro-β-muricholic acid inhibits bile acid-induced hepatocyte apoptosis by maintaining mitochondrial membrane potential, while simultaneously inhibiting intestinal FXR signaling, affecting bile acid synthesis, hepatic lipid metabolism, and insulin sensitivity. Accumulation of tauro-β-muricholic acid disrupts metabolic homeostasis, promoting cancer stem cell proliferation and tumor progression. The mechanisms of tauro-β-muricholic acid involve two aspects: first, inhibiting the translocation of the pro-apoptotic protein Bax to mitochondria and maintaining mitochondrial membrane potential (MMP); and second, blocking the FXR signaling pathway to regulate bile acid metabolism, reduce serum ceramide production, and downregulate the hepatic SREBP1C/CIDEA pathway. Tauro-β-muricholic acid possesses anti-hepatocyte apoptosis, bile acid homeostasis regulation, and liver fat accumulation reduction properties, and also functions as a biomarker, making it useful in the study of diseases such as bile acid metabolism disorders, non-alcoholic fatty liver disease, colorectal cancer, and liver fibrosis^[1][2][3][4].