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Development of a selective inhibitor of Activin and its application in a cancer-bearing mouse model

Research Project

Project/Area Number 19K07683
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionTeikyo University (2022)
The University of Tokyo (2019-2021)

Principal Investigator

Morikawa Masato  帝京大学, 先端総合研究機構, 准教授 (80775833)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsアクチビン / ミオスタチン / フォリスタチン / FSTL3 / 筋ジストロフィー / Fc融合蛋白 / TGF-β / 骨格筋肥大 / 抗ミオスタチン療法 / 乳がん / 悪液質
Outline of Research at the Start

本研究では、TGF-βファミリー分子の一つであるアクチビンとそれに極めて類似する一部ファミリー分子を選択的に阻害する新規Fc融合蛋白に関して、担癌マウスモデルを用いて評価する。がん研究の分野ではTGF-βの研究が先行していたが、アクチビンや類似のファミリー分子は解析が進んでいなかった。他方、進行がん患者が発症するがん悪液質で、アクチビンに類似するGDF8(ミオスタチン)が注目されていたが、GDF8と高い相同性を示すGDF11とアクチビンも、骨格筋量減少といった悪液質の病態に関与する。本研究の結果は、発がん過程におけるこれらのシグナルの役割解明と、がん悪液質の新たな治療法開発につながる。

Outline of Final Research Achievements

In this research, I have developed a ligand trap against activin and its relatives in the transforming growth factor beta (TGF-β) family, and have evaluated the therapeutic effects in mouse models. I focused on follistatin-like 3 (FSTL3), one of endogenous antagonists against activin, which mainly binds and neutralizes activin and myostatin (also known as GDF8). Using the knobs-into-holes technology, I developed monovalent FSTL3-Fc (mono-FSTL3-Fc) with longer serum half-life. I confirmed that systemic administration of mono-FSTL3-Fc induced muscle fiber hypertrophy and increased muscle mass in young wild-type mice and C57BL/10-mdx mice (a model mouse for human Duchenne muscular dystrophy). Targeting the signaling pathway of myostatin has been regarded as a promising strategy to increase muscle mass in the elderly and in patients. We thus reported that the mono-FSTL3-Fc can be a novel anti-myostatin agent.

Academic Significance and Societal Importance of the Research Achievements

ミオスタチン経路を阻害することで骨格筋の増加・肥大を目指す「ミオスタチン阻害薬」の開発が積極的に行われてきたが、効果不十分であったり標的外の副作用を生じたため、臨床応用された製剤はない。
本研究の成果である1価FSTL3-Fcは、マウスモデルで先行製剤と同等の骨格筋肥大効果を認めた。また、骨格筋に関係するミオスタチン、アクチビン、GDF11に選択性が高いことから、先行製剤の問題点を解消した新たなミオスタチン阻害薬となりうる。副作用の可能性の低いミオスタチン阻害薬は、進行したがんで認められる悪液質の他、高齢者におけるサルコペニア(加齢性筋肉減弱症)などの骨格筋萎縮症の治療法として有望である。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (2 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (4 results)

  • [Int'l Joint Research] スウェーデン王立工科大学(スウェーデン)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] スウェーデン王立工科大学(スウェーデン)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] スウェーデン王立工科大学(スウェーデン)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] 王立工科大学(KTH)/ウプサラ大学(スウェーデン)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Systemic administration of monovalent follistatin-like 3-Fc-fusion protein increases muscle mass in mice2021

    • Author(s)
      Ozawa T., Morikawa M., Morishita Y., Ogikubo K., Itoh F., Koinuma D., Nygren P.-A., Miyazono K.
    • Journal Title

      iScience

      Volume: 24 Issue: 5 Pages: 102488-102488

    • DOI

      10.1016/j.isci.2021.102488

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Preparation of monovalent follistatin-like 3-Fc-fusion protein and evaluation of its effects on muscle mass in mice2021

    • Author(s)
      Ozawa T., Miyazono K., Morikawa M.
    • Journal Title

      STAR Protocols

      Volume: 2 Issue: 4 Pages: 100839-100839

    • DOI

      10.1016/j.xpro.2021.100839

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Follistatin-like 3-based ligand trap increases muscle mass in mice2022

    • Author(s)
      Morikawa Masato、Miyazono Kohei
    • Organizer
      13th International BMP Conference, Dubrovnik, Croatia
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Systemic administration of monovalent follistatin-like 3-Fc-fusion protein increases muscle mass in mice2021

    • Author(s)
      Morikawa M., Ozawa T., Miyazono K.
    • Organizer
      virtual FASEB Science Research Conference, The TGF-β Superfamily Conference: Signaling in Development and Disease
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 個人の業績ページ

    • URL

      https://plaza.umin.ac.jp/morikawa/index.html

    • Related Report
      2022 Annual Research Report
  • [Remarks]

    • URL

      http://beta-lab.umin.ac.jp/

    • Related Report
      2021 Research-status Report
  • [Remarks]

    • URL

      https://plaza.umin.ac.jp/morikawa/index.html

    • Related Report
      2021 Research-status Report
  • [Remarks] 東京大学大学院医学系研究科分子病理学

    • URL

      http://beta-lab.umin.ac.jp/index.html

    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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