期刊
BIOLOGICAL & PHARMACEUTICAL BULLETIN
卷 34, 期 1, 页码 1-7出版社
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/bpb.34.1
关键词
TGR5; ursodeoxycholic acid; structure-activity relationship; farnesoid X receptor; metabolic syndrome
资金
- Japan Health Sciences Foundation
- Grants-in-Aid for Scientific Research [21590082] Funding Source: KAKEN
The aim of this study is to examine the ability of the bile acid analogues obtained by chemical modification of ursodeoxycholic acid (UDCA) for TGR5 activation. Eleven UDCA analogues including 3- or 7-methylated UDCAs and amino acid conjugates were investigated as to their ability to activate TGR5 by means of the luciferase assay. It was noteworthy that 7 alpha-methylated UDCA, namely 3 alpha,7 beta-dihydroxy-7 alpha-methyl-5 beta-cholanoic acid, had a significantly high affinity for and ability to activate TGR5 as compared to UDCA. Additionally, FXR activation ability of 7 alpha-methylated UDCA was low relative to that of UDCA. However, other modification of UDCA, such as the introduction of methyl group at its C-3 position and oxidation or epimerization of hydroxyl group in the C-3 position, could not elicit such remarkable effect. The present findings would provide a useful strategy for the development of TGR5-selective agonist.
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