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Developing a novel therapeutic approach by regulating disease-specific mitochondrial fragmentation

Research Project

Project/Area Number 19K16363
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionCenter for Novel Science Initatives, National Institutes of Natural Sciences

Principal Investigator

Tanaka Tomohiro  大学共同利用機関法人自然科学研究機構(新分野創成センター、アストロバイオロジーセンター、生命創成探究, 新分野創成センター, 特任助教 (00812760)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsミトコンドリア / 筋萎縮性側索硬化症
Outline of Research at the Start

筋萎縮性側索硬化症(ALS)に共通して認められるミトコンドリアの動態異常に着目し、その原因となるタンパク間の相互作用を網羅的に探索する。相互作用を抑制するペプチド阻害薬の開発によって、汎用性が高く、かつ副作用の少ない薬学的アプローチを提案する。

Outline of Final Research Achievements

Mitochondrial fragmentation is a hallmark pathology in both familial/sporadic amyotrophic lateral sclerosis (ALS) , attracting attention as a key therapeutic target. Our aim was 1) to identify protein-protein interaction that specifically contributes to mitochondrial fragmentation in ALS, 2) to identify a drug that inhibits this interaction.
We show that Drp1-Filamin A interaction was promoted in the spinal cord of ALS model mice. Furthermore, post-symptomatic administration of Cilnidipine, a compound that inhibits Drp1-Filamin A interaction, significantly extended the life span of ALS model mice.

Academic Significance and Societal Importance of the Research Achievements

ALSに対する有効な治療法は未だ開発されていない。ミトコンドリアの断片化を担うタンパク質Drp1はALS患者に共通する治療標的として有力視されてきたが、Drp1自身の活性を阻害する薬はミトコンドリアの生理的な分裂をも阻害してしまうため、長期にわたる病理進行への適応は難しいという背景があった。
本研究ではALS病態への選択性をもち、かつ家族性から孤発性患者まで広く適用できる治療標的の可能性を示した点、またそれが既承認薬で実現されうる可能性を示した点において、適応拡大などの社会的意義をもつ。

Report

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

    (5 results)

All 2021 2020 2019

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

  • [Journal Article] Deletion of TRPC3 or TRPC6 Fails to Attenuate the Formation of Inflammation and Fibrosis in Non-alcoholic Steatohepatitis2021

    • Author(s)
      Nishiyama Kazuhiro、Toyama Chiemi、Kato Yuri、Tanaka Tomohiro、Nishimura Akiyuki、Nagata Ryu、Mori Yasuo、Nishida Motohiro
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 44 Issue: 3 Pages: 431-436

    • DOI

      10.1248/bpb.b20-00903

    • NAID

      130007993444

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2021-03-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ibudilast attenuates doxorubicin‐induced cytotoxicity by suppressing formation of TRPC3 channel and NADPH oxidase 2 protein complexes2019

    • Author(s)
      Nishiyama Kazuhiro、Numaga‐Tomita Takuro、Fujimoto Yasuyuki、Tanaka Tomohiro、Toyama Chiemi、Nishimura Akiyuki、Yamashita Tomohiro、Matsunaga Naoya、Koyanagi Satoru、Azuma Yasu‐Taka、Ibuki Yuko、Uchida Koji、Ohdo Shigehiro、Nishida Motohiro
    • Journal Title

      British Journal of Pharmacology

      Volume: 176 Issue: 18 Pages: 3723-3738

    • DOI

      10.1111/bph.14777

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Depolysulfidation of Drp1 induced by low-dose methylmercury exposure increases cardiac vulnerability to hemodynamic overload2019

    • Author(s)
      Nishimura Akiyuki、Shimoda Kakeru、Tanaka Tomohiro、Toyama Takashi、Nishiyama Kazuhiro、Shinkai Yasuhiro、Numaga-Tomita Takuro、Yamazaki Daiju、Kanda Yasunari、Akaike Takaaki、Kumagai Yoshito、Nishida Motohiro
    • Journal Title

      Science Signaling

      Volume: 12 Issue: 587

    • DOI

      10.1126/scisignal.aaw1920

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] TRPC3-Nox2 axis mediates nutritional deficiency-induced cardiomyocyte atrophy2019

    • Author(s)
      Sudi Suhaini Binti、Tanaka Tomohiro、Oda Sayaka、Nishiyama Kazuhiro、Nishimura Akiyuki、Sunggip Caroline、Mangmool Supachoke、Numaga-Tomita Takuro、Nishida Motohiro
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 9785-9785

    • DOI

      10.1038/s41598-019-46252-2

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 筋萎縮性疾患治療薬を指向したエコファーマ研究2020

    • Author(s)
      西田基宏
    • Organizer
      第41回日本臨床薬理学会学術総会
    • Related Report
      2020 Annual Research Report

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Published: 2019-04-18   Modified: 2022-01-27  

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