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Japanese

Current Topics on Vitamin D. Protein interaction and biological action of active vitamin D compounds. Ono Yoshiyuki 1 1Research Division, Chugai Pharmaceutical Co., Ltd., Japan. pp.387-394
Published Date 2015/2/28
DOI https://doi.org/10.20837/4201503387
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 To express its biological action, active vitamin D3(1α,25-dihydroxyvitamin D3)interacts with three proteins:vitamin D binding protein(DBP),vitamin D receptor(VDR),and CYP24A1. This article explains how eldecalcitol interacts with these three proteins to achieve its mode of action. The main feature of eldecalcitol's molecular structure is the 3-hydroxypropyloxy group(3-HP group)at the 2β-position. When interacting with DBP, eldecalcitol tightly binds to DBP via the 3-HP group and enhances systemic stability of eldecalcitol. By binding to VDR, the 3-HP group stabilizes the eldecalcitol-VDR complex, which leads to high efficacy. The 3-HP group also interferes with the binding to CYP24A1, which induces residence to CYP24A1 and liver metabolism. These protein interactions constitute the mode of action of eldecalcitol.



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電子版ISSN 印刷版ISSN 0917-5857 医薬ジャーナル社

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