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2020 Fiscal Year Final Research Report

New drug development targeting novel renal tubular rate transporter MCT9 based on the structure-activity relationship

Research Project

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Project/Area Number 18K08200
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionChiba University

Principal Investigator

ANZAI Naohiko  千葉大学, 大学院医学研究院, 教授 (70276054)

Co-Investigator(Kenkyū-buntansha) 大内 基司  獨協医科大学, 医学部, 准教授 (20409155)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywordsトランスポーター
Outline of Final Research Achievements

In this study, we analyzed two points: (A) synthesis of inhibitory compounds based on the elucidation of the structure-activity relationship of uric acid transport by the novel uric acid transporter MCT9, and (B) identification of MCT9-binding protein and details of transport control mechanism. In (A), we succeeded in constructing an expression plasmid having a full-length MCT9 sequence and producing MCT9-expressing HEK293 cells. We performed compound screening using the Chiba Chemical Library. In (B), as a result of screening the kidney cDNA library from the preparation of a bait vector having the intracellular C-terminal sequence of MCT9 and the confirmation of protein expression in yeast cells, we obtained a positive clone that seems to be a candidate for MCT9-binding protein.

Free Research Field

腎生理学・薬理学

Academic Significance and Societal Importance of the Research Achievements

我が国では痛風患者は100万人を越えるとされ、痛風発症の基盤となる高尿酸血症患者に至っては1,000万人いると推定されている。痛風発症機序は未だに明らかにされておらず、その発症予防には血清尿酸値を低く保つことが必要である。そのため副作用の少ない新規の尿酸降下薬開発は今後も必須の課題である。本研究で新規尿酸トランスポーターMCT9の結合タンパク質候補の同定に迫ったことは新たな治療標的の解明につながることが期待される。また今回明確なMCT9阻害候補化合物の同定に至らなかったものの、阻害しないという構造情報も新規化合物合成に活用可能であり、創薬の基盤情報として貢献できる。

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Published: 2022-01-27  

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