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Development of non-peptide type of angiotensin II type 1 receptor ligand as a biased agonist

Research Project

Project/Area Number 19K08593
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53020:Cardiology-related
Research InstitutionFukuoka University

Principal Investigator

Miura Shinichiro  福岡大学, 医学部, 教授 (20343709)

Co-Investigator(Kenkyū-buntansha) 末松 保憲  福岡大学, 医学部, 講師 (70716927)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsアンジオテンシンII / Biased ligands / 非ペプチド型 / 細胞内シグナル / アンジオテンシンⅡ / AT1受容体拮抗薬 / 細胞外シグナル調節キナーゼ / イノシトールリン酸産生能 / 受容体 / 作動薬
Outline of Research at the Start

AT1受容体は、心血管系疾患の発症・進展に強く関わっており、Biased ligandsの概念を用い心不全治療薬を開発する。AT1受容体をターゲットとした適切な心不全治療薬は、Gタンパク質共役経路は阻害し、βアレスチン経路を作動する非ペプチド型AT1受容体選択的作動薬(Biased ligands)を既存のARBの特許に抵触しないように注意しながらデザインし合成する。心不全モデルにより有用性を検証し、また、新規作動薬がどの細胞内シグナルを伝達しているかを確認し、心不全に効果的なシグナルのみ選択的に伝達しているかを実証する。

Outline of Final Research Achievements

We synthesized three non-peptide type of AT1 receptor ligands (Compound A, B and C) as candidates of biased ligands. Inositol phosphate (IP) production and extracellular signal-regulated kinase (ERK) 1/2 activation were measured and examined binding modes of receptor-ligand by competition binding study, and subsequently analyzed whether these ligands would induce IP production and ERK1/2 activation.Compound B and C decreased and increased IP production, respectively, whereas Compound A did not change IP production. Compound B and C, but not Compound A, activated ERK1/2. L112A had a key role of IP production.In conclusions, compound A, B and C were a neutral antagonist, an inverse agonist, and an agonist with regard to IP production, respectively. On the other hand, Compound B and C, but not Compound A, were agonists to ERK1/2 activation. Thus, we developed non-peptide type of AT1 receptor compound as a biased ligand.

Academic Significance and Societal Importance of the Research Achievements

AT1受容体は、心血管系疾患の発症・進展に強く関わっており、Biased ligandsの概念を基に心不全治療薬を開発する。AT1受容体をターゲットとした適切な急性心不全治療薬は、Gタンパク質共役経路は阻害し、βアレスチン経路を作動するAT1受容体選択的作動薬の開発である。以上より、私たちは、非ペプチド型AT1受容体選択的作動薬(Biased ligands)をデザイン・合成する。新規化合物がどの細胞内シグナルを伝達しているかを確認し、心不全に効果的なシグナルを選択的に伝達しているかを検討する。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (1 results)

All 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results)

  • [Journal Article] Angiotensin Receptor Blocker and Neprilysin Inhibitor Suppresses Cardiac Dysfunction by Accelerating Myocardial Angiogenesis in Apolipoprotein E-Knockout Mice Fed a High-Fat Diet2021

    • Author(s)
      Suematsu Yasunori、Tashiro Kohei、Morita Hidetaka、Ideishi Akihito、Kuwano Takashi、Miura Shin-ichiro
    • Journal Title

      Journal of the Renin-Angiotensin-Aldosterone System

      Volume: 2021 Pages: 1-11

    • DOI

      10.1155/2021/9916789

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access

URL: 

Published: 2019-04-18   Modified: 2023-12-25  

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