Stereospecificity of Retinol Saturase: Absolute Configuration, Synthesis, and Biological Evaluation of Dihydroretinoids
摘要:
Retinol saturase carries out a stereospecific saturation of the C13-C14 double bond of all-trans-retinol to generate (13R)-all-trans-13,14-dihydroretinol. This compound is found in cells expressing mouse or zebrafish retinol saturase and in the livers of mice fed retinyl palmitate. All-trans-13,14-dihydroretinol is oxidized in vivo to all-trans-13,14-dihydroretinoic acid, a highly selective agonist of the retinoic acid receptor. The naturally occurring (13R)-all-trans-13,14-dihydroretinoic acid is a weaker agonist than the (13S) enantiomer, indicating enantioselective recognition by the ligand-binding pocket of this receptor. Consequently the (13S) enantiomer, acting through the retinoic acid receptor, also inhibits adipose differentiation more potently than the (13R) enantiomer.
Stereospecificity of Retinol Saturase: Absolute Configuration, Synthesis, and Biological Evaluation of Dihydroretinoids
作者:Alexander R. Moise、Marta Domínguez、Susana Alvarez、Rosana Alvarez、Michael Schupp、Ana G. Cristancho、Philip D. Kiser、Angel R. de Lera、Mitchell A. Lazar、Krzysztof Palczewski
DOI:10.1021/ja710487q
日期:2008.1.30
Retinol saturase carries out a stereospecific saturation of the C13-C14 double bond of all-trans-retinol to generate (13R)-all-trans-13,14-dihydroretinol. This compound is found in cells expressing mouse or zebrafish retinol saturase and in the livers of mice fed retinyl palmitate. All-trans-13,14-dihydroretinol is oxidized in vivo to all-trans-13,14-dihydroretinoic acid, a highly selective agonist of the retinoic acid receptor. The naturally occurring (13R)-all-trans-13,14-dihydroretinoic acid is a weaker agonist than the (13S) enantiomer, indicating enantioselective recognition by the ligand-binding pocket of this receptor. Consequently the (13S) enantiomer, acting through the retinoic acid receptor, also inhibits adipose differentiation more potently than the (13R) enantiomer.