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Novel therapeutics for heart failure targeting maintenance of cristae structure via mitoNEET

Research Project

Project/Area Number 17K15979
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Cardiovascular medicine
Research InstitutionHokkaido University

Principal Investigator

Furihata Takaaki  北海道大学, 医学研究院, 客員研究員 (60782505)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsミトコンドリア / 心筋 / 循環器・高血圧 / 内科
Outline of Final Research Achievements

The endogenous mitoNEET interacted with mitofilin, a core component of MICOS complex, as a collaborator of mitoNEET in mitochondrial morphology. Mitochondria in the heart from cardiac-specific deletion of mitoNEET mice clearly showed collapsed mitochondrial cristae structure. We also observed decreased mitochondrial OXPHOS and cardiac dysfunction evaluated by echocardiography, suggesting that a loss of interaction between mitoNEET and mitofilin caused mitochondrial dysfunction via collapsed cristae structure and resulted in cardiac dysfunction.

Academic Significance and Societal Importance of the Research Achievements

本研究によって、ミトコンドリア外膜に局在するmitoNEETタンパクが、ミトコンドリア内膜にあるmitofilinと相互作用を有することがあきらかとなった。同時にミトコンドリアが形態異常と機能障害を有していることもあきらかになり、mitoNEETタンパクがミトコンドリアの働きに重要な役割を果たしていることが示唆された。この成果を発展させることで、新たな心不全の分子機序による治療方法の確立にとどまらず、幅広い疾患の予防、治療の開発にむすびつくことが期待される。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (3 results)

All 2018 2017

All Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] The Outer Mitochondrial Membrane Protein, mitoNEET, Sustains Structure of Mitochondrial Cristae2018

    • Author(s)
      Takaaki Furihata
    • Organizer
      第91回米国心臓協会学術集会
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Outer Mitochondrial Membrane Protein, mitoNEET, Sustains Mitochondrial Cristae Structure2018

    • Author(s)
      降旗 高明
    • Organizer
      第1回日本循環器学会基礎研究フォーラム
    • Related Report
      2017 Research-status Report
  • [Presentation] mitoNEET Regulates Mitochondrial Iron Homeostasis Interacting with Transferrin Receptor2017

    • Author(s)
      Takaaki Furihata
    • Organizer
      第90回米国心臓協会学術集会
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2020-03-30  

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