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Investigate the potential involvement of the immune system in the regulation of lipolysis

Research Project

Project/Area Number 21H03388
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 InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Misawa Takuma  国立研究開発法人理化学研究所, 生命医科学研究センター, 研究員 (20880694)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2021: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords自然リンパ球(ILC) / 絶食 / 脂肪酸 / ケトン体 / 免疫系 / 肝臓 / 脂肪酸輸送 / 小腸 / 脂肪分解 / 脂肪合成 / リンパ球
Outline of Research at the Start

脂肪の蓄積を抑えることと、脂肪の分解を促すことは、肥満を防ぐ上で有効なアプローチである。脂肪の蓄積に対する免疫系の関与については多くのことが明らかとなってきた一方で、免疫系が脂肪の分解に与える影響については未解明な部分が多く残されている。本研究では、先天的に特定の免疫細胞を欠損する複数の遺伝子改変マウスを用いて、免疫系が脂肪分解制御機構において果たす役割を明らかにしていく。

Outline of Final Research Achievements

We initially aimed to investigate the potential involvement of immune system in the regulation of lipolysis. However, we were not able to make any conclusion as phenotype of lipolysis differed between adipose tissues. Ketone bodies are metabolites synthesized in the liver as an alternative energy to glucose during fasting. Further analysis revealed that immune cells so called innate lymphoid cells are closely involved in the regulation of ketogenesis.

Academic Significance and Societal Importance of the Research Achievements

当初の予定にはなかった方向に研究が進展したものの、免疫系がケトン体の合成制御において重要な役割を担うことが明らかとなった。これは代謝系と免疫系の関係に新たな視点をもたらす重要な発見だと言える。ケトン体は糖質の代替エネルギーとして機能するだけでなく、感染防御応答の活性化や高次脳機能の向上など人体にとって有益な生理機能を数多く発揮するため、今後の研究により得られる知見は幅広い分野への応用が期待できる。

Report

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

    (11 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (7 results) (of which Invited: 1 results)

  • [Journal Article] ILC2と肥満2024

    • Author(s)
      三澤拓馬、小安重夫
    • Journal Title

      医学のあゆみ

      Volume: 288 Pages: 61-65

    • Related Report
      2023 Annual Research Report
  • [Journal Article] 免疫システム2023

    • Author(s)
      三澤拓馬、小安重夫
    • Journal Title

      腎と透析

      Volume: 94 Pages: 875-879

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Nanaomycin E inhibits NLRP3 inflammasome activation by preventing mitochondrial dysfunction2022

    • Author(s)
      Matsui Yudai、Takemura Naoki、Shirasaki Yoshitaka、Takahama Michihiro、Noguchi Yoshihiko、Ikoma Kenta、Pan Yixi、Nishida Shuhei、Taura Manabu、Nakayama Akiyoshi、Funatsu Takashi、Misawa Takuma、Harada Yoshie、Sunazuka Toshiaki、Saitoh Tatsuya
    • Journal Title

      International Immunology

      Volume: 34 Issue: 10 Pages: 505-518

    • DOI

      10.1093/intimm/dxac028

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] ILC2s and adipose tissue homeostasis: Progress to date and the road ahead.2022

    • Author(s)
      Takuma Misawa, Marek Wagner, Shigeo Koyasu
    • Journal Title

      Frontiers in Immunology

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Involvement of innate lymphoid cells in the starvation-induced ketogenesis.2024

    • Author(s)
      Takuma Misawa, Shigeo Koyasu
    • Organizer
      第52回日本免疫学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 飢餓性脂肪肝の生理学的意義に関する考察と解析2023

    • Author(s)
      三澤拓馬、小安重夫
    • Organizer
      第32回Kyoto T cell Conference
    • Related Report
      2023 Annual Research Report
  • [Presentation] 飢餓性脂肪肝を誘導する腸管免疫ネットワーク制御機構の解明2022

    • Author(s)
      三澤拓馬
    • Organizer
      Kyoto T Cell Conference
    • Related Report
      2022 Annual Research Report
  • [Presentation] Gut-resident innate lymphoid cells regulate lipid metabolism in response to malnutrition.2022

    • Author(s)
      Takuma Misawa, Shigeo Koyasu
    • Organizer
      日本免疫学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 代謝応答に影響を及ぼす免疫ネットワーク制御機構の解明2022

    • Author(s)
      三澤拓馬
    • Organizer
      Cross-disciplinary Conference
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 低栄養時に誘導される代謝応答と免疫系の関わりを明らかにする2021

    • Author(s)
      三澤拓馬
    • Organizer
      Kyoto T Cell Conference
    • Related Report
      2021 Annual Research Report
  • [Presentation] Mutual inhibition between Prkd2 and Bcl6 controls T follicular helper cell differentiation.2021

    • Author(s)
      三澤拓馬
    • Organizer
      日本免疫学会学術集会
    • Related Report
      2021 Annual Research Report

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

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