• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Exploration of the coupling partner and the potential inhibitor of a novel smooth muscle contraction regulator, p63RhoGEF

Research Project

Project/Area Number 19K21245
Project/Area Number (Other) 18H06129 (2018)
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund (2019)
Single-year Grants (2018)
Review Section 0802:Biomedical structure and function and related fields
Research InstitutionTokyo University of Science, Yamaguchi

Principal Investigator

Momotani Ko  山陽小野田市立山口東京理科大学, 薬学部, 教授 (00824848)

Project Period (FY) 2018-08-24 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsp63RhoGEF / GEFT / RhoA / 平滑筋
Outline of Research at the Start

本研究では、これまでの研究を通して特定した血管収縮に関わっているp63RhoGEFというタンパク質とともに働く未知のタンパク質や、p63RhoGEFを阻害する新規因子の探索を行います。阻害因子を特定できれば、高血圧の原因となる血管収縮を阻害することが可能となり、高血圧の治療に役に立つと考えられます。それぞれ副作用等の問題をかかえる既存の高血圧治療薬に新規阻害因子の選択肢を加えることによって、より臨機応変に、状況に応じた副作用の少ない治療を選択することが可能になると考えます。本研究は、そのような新規阻害物質の特定・開発の前段階の研究です。

Outline of Final Research Achievements

This study aims to explore and identify an association partner of a smooth muscle contraction regulatory protein p63RhoGEF. A newly identified partner will eventually be applied for the screening of the inhibitory compound of p63RhoGEF.
Overexpression of various versions of tagged p63RhoGEF in mammalian cells resulted mostly in success. However, overexpression of p63RhoGEF in yeast cells for a future project of inhibitory compound screening was not achieved within the given time. The crucial role of p63RhoGEF in vascular smooth muscle contraction regulation was successfully confirmed using ex vivo mouse micro-vessels.
During this study, the presence of an unknown regulatory element modifying the most downstream of smooth muscle contraction regulatory pathway, myosin light chain phosphorylation, had been suggested. This unknown element was identified as RSK2 kinase and reported on Science Signaling Journal.

Academic Significance and Societal Importance of the Research Achievements

血管の異常収縮が高血圧を引き起こすことはよく知られています。本研究は、血管収縮に関わる新たな因子の特定し、その因子の阻害剤の特定による高血圧治療薬の開発につなげていくことを目指しました。現在既にいくつかの高血圧治療薬は存在していますが、いずれも副作用の問題があり、高血圧治療薬の選択肢を増やすことによってそれらの副作用回避の可能性を広げることは喫緊の課題です。本研究では、当初予想していた通りの新たな因子の特定には至りませんでしたが、研究途上において示唆された、全く新しい別の因子の特定に成功し、これは既存の高血圧治療薬とは全く異なる新たな高血圧治療薬へ道を開く成果と考えます。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • Research Products

    (6 results)

All 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] University of Virginia(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Virginia(米国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] RSK2 contributes to myogenic vasoconstriction of resistance arteries by activating smooth muscle myosin and the Na+/H+ exchanger2018

    • Author(s)
      Mykhaylo V. Artamonov, Swapnil K. Sonkusare, Miranda E. Good, Ko Momotani, Masumi Eto, Brant E. Isakson, Thu H. Le, Eric L. Cope, Zygmunt S. Derewenda, Urszula Derewenda, Avril V. Somlyo
    • Journal Title

      Science Signaling

      Volume: Vol. 11, Issue 554 Issue: 554

    • DOI

      10.1126/scisignal.aar3924

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 腸間膜血管内圧上昇に呼応した血管緊張におけるGDP/GTP交換因子p63RhoGEFの活性化2019

    • Author(s)
      坂井久美子 百渓江
    • Organizer
      日本平滑筋学会総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Ca2+感受性の亢進を通した平滑筋収縮制御におけるp63RhoGEFの機能解析2018

    • Author(s)
      百渓江 坂井久美子
    • Organizer
      日本平滑筋学会総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] p63RhoGEF: a key regulator in myogenic tone/response2018

    • Author(s)
      Kumiko Sakai, Hiroki Kurokawa, Ko Momotani
    • Organizer
      The Biophysical Society Annual Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

URL: 

Published: 2018-08-27   Modified: 2024-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi