Butyrate (null)

Butyrate is a four-carbon short-chain fatty acid (SCFA) primarily produced by the microbial fermentation of dietary fibers in the large intestine (PubMed). It serves as the preferred energy source for colonic epithelial cells and is a critical regulator of intestinal homeostasis and systemic immunity (NIH). Pharmacologically, butyrate is a well-characterized pan-inhibitor of Class I and Class IIa histone deacetylases (HDACs), which allows it to modulate gene expression related to cell cycle arrest and apoptosis in various cancer cell lines (StatPearls). Additionally, it acts as a signaling ligand for specific G protein-coupled receptors, including Free fatty acid receptor 2 (FFAR2), Free fatty acid receptor 3 (FFAR3), and Hydroxycarboxylic acid receptor 2 (HCAR2) (Nature). Due to these diverse interactions, butyrate and its derivatives are investigated for their therapeutic potential in treating inflammatory bowel diseases, colorectal cancer, and metabolic disorders such as type 2 diabetes (PubMed). However, its clinical application is often challenged by its rapid metabolism, short half-life, and poor organoleptic properties.

Other names

Butanoic acidButyric acidSodium butyrateEthylacetic acidPropane-1-carboxylic acid

Butyrate acts as a potent inhibitor of histone deacetylases (HDACs), leading to hyperacetylation of histones and altered gene expression (PubMed). It also functions as an agonist for G protein-coupled receptors FFAR2 (GPR43), FFAR3 (GPR41), and HCAR2 (GPR109A), triggering intracellular signaling pathways involved in immune modulation and metabolic regulation (Nature).