Tauroursodeoxycholate (UR 906), also known as ursodoxicoltaurine, is a highly hydrophilic tertiary bile acid that is produced in humans at a low concentration. Tauroursodeoxycholate is the more hydrophilic form of ursodeoxycholic acid, which is the more abundant naturally produced bile acid in humans.Tauroursodeoxycholate is being investigated for use in several conditions such as Primary Biliary Cirrhosis (PBC), insulin resistance, amyloidosis, Cystic Fibrosis, Cholestasis, and Amyotrophic Lateral Sclerosis.

METHODS: HeLa cells overexpressing the WDR45 mutation were treated with Tauroursodeoxycholate (200 µM) for 24 h, and the expression levels of target proteins were measured by Western Blot.
RESULTS: Inhibition of ER stress with Tauroursodeoxycholate significantly reduced the phosphorylation of p38 and LAMP2A as well as the punctate formation of mCherry KFERQ in cells expressing mutant WDR45. [1]
METHODS: Undifferentiated neural stem cells NSCs were treated with Tauroursodeoxycholate (100 µM) for 24 h and cell proliferation was detected by Flow cytometry via BrdU.
RESULTS: BrdU incorporation increased significantly after incubation with Tauroursodeoxycholate, and Tauroursodeoxycholate regulated cell proliferation. Tauroursodeoxycholate regulates cell proliferation.[2]

METHODS: To test the effect on diabetes, Tauroursodeoxycholate (300 mg/kg) was administered intraperitoneally to STZ-induced diabetic C57BL/6 mice once daily for 24 days.
RESULTS: After 15 days of treatment, STZ+Tauroursodeoxycholate mice had a 43% reduction in blood glucose compared to the STZ group. This decrease may be due to an increase in insulinemia. [3]