Record Information
Version1.0
StatusDetected and Quantified
Creation Date2020-10-27 23:37:44 UTC
Update Date2024-10-17 19:07:39 UTC
Metabolite IDMMDBc0000151
Metabolite Identification
Common NameLithocholic acid
DescriptionLithocholic acid, also known as 3α-hydroxy-5β-cholan-24-oic acid or LCA, is a secondary bile acid. It is formed from chenodeoxycholate by bacterial action, and is usually conjugated with glycine or taurine. It acts as a detergent to solubilize fats for absorption and is itself absorbed. It is used as cholagogue and choleretic. Bile acids are steroid acids found predominantly in the bile of mammals. The distinction between different bile acids is minute, and depends only on the presence or absence of hydroxyl groups on positions 3, 7, and 12. Bile acids are physiological detergents that facilitate excretion, absorption, and transport of fats and sterols in the intestine and liver. Bile acids are also steroidal amphipathic molecules derived from the catabolism of cholesterol. They modulate bile flow and lipid secretion, are essential for the absorption of dietary fats and vitamins, and have been implicated in the regulation of all the key enzymes involved in cholesterol homeostasis. Bile acids recirculate through the liver, bile ducts, small intestine, and portal vein to form an enterohepatic circuit. They exist as anions at physiological pH, and consequently require a carrier for transport across the membranes of the enterohepatic tissues. The unique detergent properties of bile acids are essential for the digestion and intestinal absorption of hydrophobic nutrients. Bile acids have potent toxic properties (e.g. membrane disruption) and there are a plethora of mechanisms to limit their accumulation in blood and tissues (PMID: 11316487 , 16037564 , 12576301 , 11907135 ). When present in sufficiently high levels, lithocholic acid can act as an oncometabolite. An oncometabolite is a compound that when present at chronically high levels promotes tumour growth and survival. Chronically high levels of lithocholic acid are associated with several forms of cancer including colon cancer, pancreatic cancer, esophageal cancer, and many other GI cancers. High bile acid levels lead to the generation of reactive oxygen species and reactive nitrogen species, disruption of the cell membrane and mitochondria, induction of DNA damage, mutation and apoptosis, and the development of reduced apoptosis capability upon chronic exposure (PMID: 24884764 ). Dietary fibre can bind to lithocholic acid and aid in its excretion in stool. As such, fibre can protect against colon cancer.
Structure
Synonyms
ValueSource
(3alpha,5beta)-3-Hydroxycholan-24-Oic acidChEBI
3alpha-Hydroxy-5beta-cholanateChEBI
3alpha-Hydroxy-5beta-cholanic acidChEBI
3alpha-Hydroxy-5beta-cholanoic acidChEBI
5beta-Cholanic acid-3alpha-olChEBI
LithocholateKegg
(3a,5b)-3-Hydroxycholan-24-OateGenerator
(3a,5b)-3-Hydroxycholan-24-Oic acidGenerator
(3alpha,5beta)-3-Hydroxycholan-24-OateGenerator
(3Α,5β)-3-hydroxycholan-24-OateGenerator
(3Α,5β)-3-hydroxycholan-24-Oic acidGenerator
3a-Hydroxy-5b-cholanateGenerator
3a-Hydroxy-5b-cholanic acidGenerator
3Α-hydroxy-5β-cholanateGenerator
3Α-hydroxy-5β-cholanic acidGenerator
3a-Hydroxy-5b-cholanoateGenerator
3a-Hydroxy-5b-cholanoic acidGenerator
3alpha-Hydroxy-5beta-cholanoateGenerator
3Α-hydroxy-5β-cholanoateGenerator
3Α-hydroxy-5β-cholanoic acidGenerator
5b-Cholanate-3a-olGenerator
5b-Cholanic acid-3a-olGenerator
5beta-Cholanate-3alpha-olGenerator
5Β-cholanate-3α-olGenerator
5Β-cholanic acid-3α-olGenerator
Acid, lithocholicHMDB
Molecular FormulaC24H40O3
Average Mass376.5726
Monoisotopic Mass376.297745146
IUPAC NameNot Available
Traditional NameNot Available
CAS Registry Number434-13-9
SMILESNot Available
InChI Identifier
InChI=1S/C24H40O3/c1-15(4-9-22(26)27)19-7-8-20-18-6-5-16-14-17(25)10-12-23(16,2)21(18)11-13-24(19,20)3/h15-21,25H,4-14H2,1-3H3,(H,26,27)/t15-,16-,17-,18+,19-,20+,21+,23+,24-/m1/s1
InChI KeySMEROWZSTRWXGI-HVATVPOCSA-N