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Mechanisms underlying the anti-aging effect of calorie restriction: Roles for FoxO transcription factors in macrophages

Research Project

Project/Area Number 19H04033
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionNagasaki University

Principal Investigator

Shimokawa Isao  長崎大学, 医歯薬学総合研究科(医学系), 教授 (70187475)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2019: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Keywords老化 / カロリー制限 / 炎症 / FoxO転写因子 / Inflammasome / マクロファージ
Outline of Research at the Start

本研究は、カロリー制限(Calorie Restriction, CR)による長寿命化機構を解明し、ヒトの老化及び関連疾患の制御に応用することを目指す。我々は、 Forkhead box O (FoxO) 転写因子ファミリーの一つであるFoxO3がCRの寿命延長効果に、 FoxO1が腫瘍抑制に必要であることを報告した。一方、老化や癌の進展に、細胞レベルにおける軽微だが慢性的な炎症が関与していることが知られている。本研究では、マクロファージ特異的F oxo3、Foxo1遺伝子欠失マウスを用いて、FoxO3, 1を介したCRの老化と癌の制御におけるマクロファージの役割を解明する。

Outline of Final Research Achievements

The present study was conducted to elucidate the role for forkhead box O (FoxO)1 and FoxO3 transcription factors in the anti-aging mechanism of calorie restriction (CR) regarding suppression of inflammation. First, we generated mice lacking myelomonocyte-specific Foxo1 or Foxo3 gene (Foxo1 cKO, Foxo3 cKO), and kept those mice under ad-libitum (AL) or CR feeding condition. Activation of inflammasome, a marker of inflammation at the cellular level, was analyzed in intraperitoneal macrophages. The results indicated that inflammasome activation was suppressed by CR. Although the potential role for FoxOs in the effect of CR remains unknown, macrophages derived from Foxo1 cKO mice displayed attenuated activation of inflammasome even in AL conditions. Foxo1 cKO mice also resisted against lipopolysaccharide-induced inflammatory stress. The present study will continue to elucidate the roles for FoxO1 and 3 in the effect of CR.

Academic Significance and Societal Importance of the Research Achievements

軽微だが慢性的に持続する細胞レベルの炎症が老化や関連する疾患の発症を促進すると考えられている。本研究は、実験動物だけではなくヒトにも応用可能と期待されるカロリー制限(CR)の抗老化効果が、細胞レベルにおける炎症を抑制することを示唆した。この成果は、CRの抗老化効果の分子メカニズムを解明するうえで、学術的な意義が高いこと、また、自由摂食下では、炎症細胞におけるFoxO1の減弱が抗老化効果を生み出す可能性を指摘し、それを老化や関連疾患の制御に応用できることを示唆した点は、高齢化社会における健康寿命延伸に貢献する上で、社会的意義は大きい。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (10 results)

All 2021 2020 2019 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Remarks (3 results)

  • [Journal Article] The Role of Neuropeptide Y in Adipocyte-Macrophage Crosstalk during High Fat Diet-Induced Adipose Inflammation and Liver Steatosis2021

    • Author(s)
      Park Seongjoon、Komatsu Toshimitsu、Hayashi Hiroko、Mori Ryoichi、Shimokawa Isao
    • Journal Title

      Biomedicines

      Volume: 9 Issue: 11 Pages: 1739-1739

    • DOI

      10.3390/biomedicines9111739

    • NAID

      120007188605

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Does Calorie Restriction Modulate Inflammaging via FoxO Transcription Factors?2020

    • Author(s)
      Kim Sang-Eun、Mori Ryoichi、Shimokawa Isao
    • Journal Title

      Nutrients

      Volume: 12 Issue: 7 Pages: 1959-1959

    • DOI

      10.3390/nu12071959

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanisms of Calorie Restriction: A Review of Genes Required for the Life-Extending and Tumor-Inhibiting Effects of Calorie Restriction2019

    • Author(s)
      Komatsu T, Park S, Hayashi H, Mori R, Yamaza H, Shimokawa I.
    • Journal Title

      Nutrients

      Volume: 11 Issue: 12 Pages: 1-18

    • DOI

      10.3390/nu11123068

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Mechanisms underlying the life-extending effect of dietary energy restriction2021

    • Author(s)
      Shimokawa I
    • Organizer
      First Joint Event between SixERS and UST
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ほ乳類の老化制御機構と心疾患研究2021

    • Author(s)
      下川 功
    • Organizer
      CVMW2021心血管代謝週間
    • Related Report
      2021 Annual Research Report
  • [Presentation] FoxO3 regulates energy metabolism and metabolic disorders in aging animals2021

    • Author(s)
      Shimokawa I
    • Organizer
      Wild Ginseng Anti-aging Expo
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] カロリー制限研究の歴史と展望2020

    • Author(s)
      下川 功
    • Organizer
      日本基礎老化学会 第一回市民フォーラム in 松本
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Remarks] 長崎大学大学院医歯薬学総合研究科・病理学・

    • URL

      https://www.med.nagasaki-u.ac.jp/pathlgy1/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 長崎大学大学院医歯薬学総合研究科・医療科学専攻・長崎大学医学部病理学・病理学分野

    • URL

      https://www.med.nagasaki-u.ac.jp/pathlgy1/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 長崎大学大学院医歯薬学総合研究科・病理学分野

    • URL

      http://www.med.nagasaki-u.ac.jp/pathlgy1/

    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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