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2014 Fiscal Year Final Research Report

Development of SPAK kinase inhibitors

Research Project

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Project/Area Number 25670406
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Kidney internal medicine
Research InstitutionTokyo Medical and Dental University

Principal Investigator

UCHIDA SHINICHI  東京医科歯科大学, 医歯(薬)学総合研究科, 教授 (50262184)

Project Period (FY) 2013-04-01 – 2015-03-31
Keywords高血圧 / 創薬
Outline of Final Research Achievements

WNK- STE20/SPS1-related proline-alanine-rich protein kinase (SPAK)-SLC12a transporters cascade regulates blood pressure through NaCl reabsorption in kidney and vasoconstriction. Therefore, drugs that inhibit this signal cascade could become new antihypertensive drugs that have dual effects as a diuretic and vasodilator. We sought to discover SPAK kinase inhibitors by screening chemical compounds and existing drugs. We developed a new screening system using enzyme-linked immunosorbent assay (ELISA) and screened over 20,000 small-molecule compounds. As a result of this screening effort, we discovered one small-molecule compound and Closantel, an antiparasitic agent, which inhibited SPAK-regulated NCC and NKCC1 phosphorylation and activation not only in vitro but also in cultured cell lines and in mice.

Free Research Field

腎臓内科学

URL: 

Published: 2016-06-03  

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