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innovative rejuvenation strategy by supermicrosurgical parabiosis

Research Project

Project/Area Number 20K18422
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56070:Plastic and reconstructive surgery-related
Research InstitutionKeio University

Principal Investigator

SUZUKI Yushi  慶應義塾大学, 医学部(信濃町), 特任助教 (40793287)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords若返り / Parabiosis / Supermicrosurgery
Outline of Research at the Start

高齢化社会に突入し、今後ますます社会の高齢化が進んでいく中で、老化や寿命に関する研究は多くの期待を背負っている。今回我々は、老齢個体と若年個体を接合することで、老化にかかわる因子を同定する既存のモデルに改良を加え、超微小血管吻合技術を有する形成外科医のみに可能である、新しいモデルを作成することで、新たな老化へと関わりうる因子を同定することを目標としている。

Outline of Final Research Achievements

Using the skills of a surgeon with supermicrosurgery, we created and evaluated a model of parabiosis in young and old mice. Although it was difficult to create a model using vascular anastomosis, we evaluated whether a younger factor would provide a stronger rejuvenating factor to old mice by comparing young 1-month-old mice with 2-month-old mice.
The rejuvenation index, called cellular senescence-associated secretory traits (SASPs), was the target of evaluation. However, when differences in SASP factors in brain, liver, and kidney were compared, each factor did not produce a large difference. In other words, the hypothesis that younger factors have stronger rejuvenation effects may be rejected.

Academic Significance and Societal Importance of the Research Achievements

老化研究を行う際に老齢マウスと若齢マウスを接合し、血流を交差させることで若齢マウスの血液が老齢マウスに与える影響を評価するHeterochronic parabiosisという実験手法が存在するが、本手法の若齢マウスは2ヶ月齢までの報告しかなく、また若齢マウスの月齢にはばらつきがあるため、統一された研究モデルではなかった。我々の研究では、1か月と2か月のマウスには有意差はなく、若齢側のマウスがより若くある必要がない可能性が示唆されており、老化研究者にとって重要な情報の一つとなりうる。

Report

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

    (2 results)

All 2022 2020

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

  • [Journal Article] Evaluation of the effect of age of the younger mice on the rejuvenation of the older mice by heterochronic parabiosis2022

    • Author(s)
      Suzuki Yushi、Takaya Kento、Watanabe Shiho、Otaki Marika、Kono Hikaru、Kishi Kazuo
    • Journal Title

      Aging

      Volume: 14 Issue: 6 Pages: 2507-2512

    • DOI

      10.18632/aging.203966

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Heterochronic parabiosisを用いた若返りへのアプローチ2020

    • Author(s)
      鈴木悠史
    • Organizer
      第50回日本創傷治癒学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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