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Anti-aging effects of a peptide factor that modifies Alzheimer's disease pathologies

Research Project

Project/Area Number 21K05296
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 37020:Chemistry and chemical methodology of biomolecules-related
Research InstitutionSophia University

Principal Investigator

Niikura Takako  上智大学, 理工学部, 教授 (10301491)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsペプチド / 生理活性分子 / 細胞老化 / 老化
Outline of Research at the Start

ヒューマニンは認知機能低下などのアルツハイマー病の病態を改善させる作用を持つ生理活性分子である。脳以外にも筋肉などの多様な臓器に対する生理作用を持つが、ヒューマニンの血液中の量は加齢とともに減少する。本研究は、ヒューマニンが「抗老化分子」のひとつであるとの仮説のもと、その役割を明らかにすることを目的とする。老化や身体機能の変化に対してヒューマニンの生体内での量や機能の変化がどのように関連するかを検討する。

Outline of Final Research Achievements

Humanin, a peptide factor, has shown promise in modifying Alzheimer’s disease-associated changes, including cognitive dysfunction. Our recent discovery that HN directly enhances exocytosis in neuronal cells is a significant step forward. Cellular senescence is a process that contributes to tissue aging and age-associated diseases such as Alzheimer’s disease. We evaluated the potential of S14G-HN, a highly potent HN derivative, to suppress cellular senescence in neurons. Encouragingly, our findings revealed that S14G-HN effectively suppresses chemical-induced cellular senescence but did not reverse the functional deficit in exocytosis. Further, S14G-HN ameliorated physical and cognitive deficits in senescence-accelerated mice.

Academic Significance and Societal Importance of the Research Achievements

血液中に含まれる抗老化因子の同定やその作用の解析は、老化の仕組みの理解を深めるとともに、健康寿命の延伸の方策を探る一助となる。ヒューマニンは、ミトコンドリアに由来しホルモン様の作用を持つ新規ペプチド群のひとつで、その機能解析は生理活性分子の新たな作用の理解にも貢献する。本研究では、ヒューマニンが神経細胞の細胞レベルでの老化を抑制することで抗老化因子のひとつとして働く可能性が示唆された。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (3 results)

All 2023 2022

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

  • [Journal Article] Humanin and Alzheimer's disease: The beginning of a new field2022

    • Author(s)
      Niikura Takako
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - General Subjects

      Volume: 1866 Issue: 1 Pages: 130024-130024

    • DOI

      10.1016/j.bbagen.2021.130024

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Humanin, a bioactive peptide, suppresses cellular senescence in neurons.2023

    • Author(s)
      A Kozuka, T Niikura
    • Organizer
      Society for Neuroscience Annual Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The effect of Humanin, a bioactive peptide, on cellular senescence in neurons.2022

    • Author(s)
      A Kozuka, D Suzuki, T Niikura
    • Organizer
      第65回日本神経化学会年会
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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