1 Bile Acid Chemistry, Biology, and Therapeutics During the Last 80 Years: Historical Aspects Alan F. Hofmann and Lee R. Hagey Running footline: History of bile acid research Department of Medicine, University of California, San Diego 92093-063 Downloaded from Correspondence to Alan F. Hofmann (
[email protected]) or Lee R. Hagey (
[email protected]) www.jlr.org Alan F. Hofmann, M.D., Telephone and fax: (858) 459-1754 Lee R. Hagey, Ph.D. Telephone (619) 543-2281 by guest, on October 30, 2017 Abbreviations: ASBT, apical sodium co-dependent bile acid transporter; AUC, area under the curve; BSEP, bile salt export pump; CDCA, chenodeoxycholic acid; CMC, critical micellization concentration; CMT, critical micellization temperature; CMpH, critical micellization pH; DCA, deoxycholic acid; FATP, fatty acid transport protein; FGF, fibroblast growth factor; FGFR4, fibroblast growth factor receptor 4; FRET, Forster resonance energy transfer; FXR, farnesoid X-Receptor; GLP-1, glucagon-like peptide 1; MDR, multidrug resistance (protein); MRP4, multidrug resistance protein 4; MTBE, methyl tertbutyl ether; NTCP, Na+ taurocholate co-transporting polypeptide; OATP, organic anion transporting polypeptide; OST, organic solute transporter; PC, phosphatidylcholine; PFIC2, progressive familial intrahepatic cholestasis, type 2; SLCO, solute carrier organic anion; TGR5, transmembrane G protein- coupled receptor 4; UDCA, ursodeoxycholic acid. 2 Abstract During the last 80 years there have been extraordinary advances in our knowledge of the chemistry and biology of bile acids. We present here a brief history of the major achievements as we perceive them. Bernal, a physicist, determined the x-ray structure of cholesterol crystals, and his data together with the vast chemical studies of Wieland and Windaus enabled the correct structure of the steroid nucleus to be deduced.