Tauroursodeoxycholic acid (BioDeep_00002052731)

描述信息

Tauroursodeoxycholic acid, also known as ursodoxicoltaurine, is a highly hydrophilic tertiary bile acid that is produced in humans at a low concentration. It is a taurine conjugate of [ursodeoxycholic acid] with comparable therapeutic efficacy and safety, but a much higher hydrophilicity. Normally, hydrophilic bile acids regulates hydrophobic bile acids and their cytotoxic effects. Tauroursodeoxycholic acid can reduce the absorption of cholesterol in the small intestine, thereby reducing the body's intake of dietary cholesterol and the body cholesterol content. Tauroursodeoxycholic acid is currently used in Europe to treat and prevent gallstones as a bile acid derivative. Due to a range of its molecular properties - namely its anti-apoptotic effects - tauroursodeoxycholic acid has been examined in inflammatory metabolic diseases and neurodegenerative diseases.

Ursodoxicoltaurine is the international nonproprietary name (INN) for the pharmaceutical form of tauroursodeoxycholic acid (TUDCA). It is also known as taurursodiol. Tauroursodeoxycholic acid is a naturally occurring hydrophilic bile acid which is the taurine conjugated form of ursodeoxycholic acid (UDCA). Humans have only trace amounts of tauroursodeoxycholic acid but bears have large amounts of tauroursodeoxycholic acid and ursodeoxycholic acid in their bile.[1]

Synthesis
Bile acids are naturally synthesized from cholesterol in the liver and are conjugated with specific amino-acids, specifically taurine. Bear bile contains several bile acids including taurochenodeoxycholic acid, ursodeoxycholic acid, and chenodeoxycholic acid.[2] UDCA and its taurine conjugates comprise about 47\\\\% of the bile in American black bears and up to 76\\\\% in Asiatic bears.[1][3] Ursodeoxycholic acid and tauroursodeoxycholic acid were first chemically synthesized in 1954 in Japan.[1] Ursodeoxycholic acid is produced in several countries for the treatment of gallstones and primary biliary cholangitis.[4]

Cellular mechanisms
Apoptosis is largely influenced by the mitochondria. If the mitochondria are distressed, they release cytochrome C (cyC) and calcium which activate caspases to propagate a cascade of cellular mechanisms to cause apoptosis. Tauroursodeoxycholic acid prevents apoptosis with its role in the BAX pathway.[7] Tauroursodeoxycholic acid prevents BAX from being transported to the mitochondria which protects the mitochondria from perturbation and the activation of caspases.[8] Many effects of tauroursodeoxycholic acid appear to be dependent on the activation of the cell membrane receptors TGR5, S1PR2 and α5β1-Integrin.[8]

Tauroursodeoxycholic acid also acts as a chemical chaperone to help maintain the stability and correct folding of proteins.

Tauroursodeoxycholic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=14605-22-2 (retrieved 2024-06-29) (CAS RN: 14605-22-2). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).
Tauroursodeoxycholate (Tauroursodeoxycholic acid) is an endoplasmic reticulum (ER) stress inhibitor. Tauroursodeoxycholate significantly reduces expression of apoptosis molecules, such as caspase-3 and caspase-12. Tauroursodeoxycholate also inhibits ERK.
Tauroursodeoxycholate (Tauroursodeoxycholic acid) is an endoplasmic reticulum (ER) stress inhibitor. Tauroursodeoxycholate significantly reduces expression of apoptosis molecules, such as caspase-3 and caspase-12. Tauroursodeoxycholate also inhibits ERK.

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