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Analysis on a new immunoregulatory mechanism to control pathogenic T cell repertoires

Research Project

Project/Area Number 19H01051
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 53:Organ-based internal medicine and related fields
Research InstitutionKeio University

Principal Investigator

TAKAHASHI Hayato  慶應義塾大学, 医学部(信濃町), 准教授 (40398615)

Co-Investigator(Kenkyū-buntansha) 谷口 智憲  京都大学, 医学研究科, 特定講師 (40424163)
舩越 建  慶應義塾大学, 医学部(信濃町), 准教授 (80365353)
山上 淳  慶應義塾大学, 医学部(信濃町), 講師 (80327618)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥45,500,000 (Direct Cost: ¥35,000,000、Indirect Cost: ¥10,500,000)
Fiscal Year 2022: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2020: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2019: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
Keywords免疫寛容 / 免疫制御 / T細胞 / 天疱瘡 / 自己免疫疾患 / 免疫寛容機構 / がん免疫療法 / デスモグレイン3 / コレステロール代謝 / 腫瘍免疫 / 免疫制御機構
Outline of Research at the Start

免疫寛容機構の解明は自己免疫疾患の制御に役立つだけでなく、免疫寛容機構が障害となっているがん免疫療法の強化に直結する。本研究計画では、申請者が独自の実験系で同定した新しい二つの免疫制御機構に焦点を当て、その分子機構を解明することで自己免疫皮膚疾患および悪性腫瘍の治療に応用することを目的としている。特に、両機構の最大の特徴が共に、抗原特異的に活性化したT細胞レパトアの『除去』であり、その応用は自己反応性T細胞の根絶、あるいは新たな抗腫瘍T細胞レパトアの生存・獲得を可能とする。既存の治療法では成し得ない、革新的治療コンセプトをもった疾患制御法の基盤確立を目指す。

Outline of Final Research Achievements

The aim of this study is to elucidate the various immune tolerance mechanisms that we have identified and to use them to treat autoimmune diseases and to enhance cancer immunotherapy. In particular, we have shown that the immune tolerance mechanism functioning in peripheral tissues operates in an antigen-specific manner to eliminate autoreactive T cells, and that the molecule OX40, which is expressed by regulatory T cells, is important as a part of this mechanism. Furthermore, this mechanism was able to eliminate pathological T cells more efficiently when functioning repeatedly, suggesting the existence of a memory of immune tolerance mechanisms. Furthermore, we identified cholesterol metabolism-related molecules that act as brakes on cancer immunity. These results were expected to be useful for the development of the treatment in intractable diseases and cancer.

Academic Significance and Societal Importance of the Research Achievements

本研究では、ヒト自己免疫疾患で標的とされている自己抗原に対する抗原特異的な末梢性免疫寛容機構の一端をマウスモデルで明らかにできた点が、人工的に作成された従来の自己免疫モデルでの成果と大きく異なる。特に、今回明らかにできた制御性T細胞が発現するOX40分子が重要な分子であった点は、今後の免疫疾患治療戦略上、有益な成果であったと考えられた。また、本研究を通じて、免疫制御機構とコレステロール代謝の接点を明らかにできた。従来知られてこなかった、コレステロール代謝を利用した免疫制御機構を明らかにでき、今後の疾患制御法開発の戦略に新たな研究領域を確立できたことは、学術的にも大きな意義があった。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Comments on the Screening Results   Annual Research Report
  • Research Products

    (17 results)

All 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 6 results) Remarks (2 results)

  • [Int'l Joint Research] National Institutes of Health(米国)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Diverse Role of OX40 on T Cells as a Therapeutic Target for Skin Diseases.2023

    • Author(s)
      Iriki H, Takahashi H, Amagai M
    • Journal Title

      J Invest Dermatol

      Volume: 143 Issue: 4 Pages: 545-553

    • DOI

      10.1016/j.jid.2022.11.009

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] T cell autoimmunity and immune regulation to desmoglein 3, a pemphigus autoantigen2022

    • Author(s)
      Takahashi Hayato、Iriki Hisato、Asahina Yasuhiko
    • Journal Title

      The Journal of Dermatology

      Volume: 50 Issue: 2 Pages: 112-123

    • DOI

      10.1111/1346-8138.16663

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] IgM to IgG Class Switching Is a Necessary Step for Pemphigus Phenotype Induction in Desmoglein 3?Specific B Cell Receptor Knock-in Mouse2022

    • Author(s)
      Nomura Hisashi、Wada Naoko、Takahashi Hayato、Kase Yuko、Yamagami Jun、Egami Shohei、Iriki Hisato、Mukai Miho、Kamata Aki、Ito Hiromi、Fujii Hideki、Ishikura Tomoyuki、Koseki Haruhiko、Watanabe Takashi、Yamada Taketo、Ohara Osamu、Koyasu Shigeo、Amagai Masayuki
    • Journal Title

      The Journal of Immunology

      Volume: 208 Issue: 3 Pages: 582-593

    • DOI

      10.4049/jimmunol.2100781

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cholesterol 25-hydroxylase is a metabolic switch to constrain T cell?mediated inflammation in the skin2021

    • Author(s)
      Takahashi H.、Nomura H.、Iriki H.、Kubo A.、Isami K.、Mikami Y.、Mukai M.、Sasaki T.、Yamagami J.、Kudoh J.、Ito H.、Kamata A.、Kurebayashi Y.、Yoshida H.、Yoshimura A.、Sun H. W.、Suematsu M.、O’Shea J. J.、Kanno Y.、Amagai M.
    • Journal Title

      Science Immunology

      Volume: 6 Issue: 64

    • DOI

      10.1126/sciimmunol.abb6444

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Peripheral tolerance by Treg via constraining OX40 signal in autoreactive T cells against desmoglein 3, a target antigen in pemphigus2021

    • Author(s)
      Iriki H, et al.
    • Journal Title

      Proc Natl Acad Sci USA

      Volume: 118 Issue: 49

    • DOI

      10.1073/pnas.2026763118

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of clinical characteristics, prognosis and antibody pathogenicity of pemphigus patients positive for anti‐desmoglein IgG autoantibodies in remission: a retrospective cohort study2021

    • Author(s)
      Zhao W.L.、Ishii K.、Egami S.、Xu Z.、Funakoshi T.、Takahashi H.、Tanikawa A.、Ishiko A.、Amagai M.、Yamagami J.
    • Journal Title

      Journal of the European Academy of Dermatology and Venereology

      Volume: 36 Issue: 2 Pages: 271-278

    • DOI

      10.1111/jdv.17770

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Simultaneous detection of mouse Foxp3 and cytosolic fluorescent protein by a modified intracellular staining protocol2021

    • Author(s)
      Isami Koichi、Amagai Masayuki、Takahashi Hayato
    • Journal Title

      Journal of Dermatological Science

      Volume: 101 Issue: 2 Pages: 147-149

    • DOI

      10.1016/j.jdermsci.2020.10.017

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] IFNg signaling plays both pro-inflammatory and immunoregulatory roles depending on the cell types in mouse dermatitis model2021

    • Author(s)
      Mukai M, Takahashi H, Amagai M
    • Organizer
      The 50th Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Autoantigen-specific B cells targeted single-cell RNA-seq reveals the functional heterogeneity in pemphigus patients2021

    • Author(s)
      Shohei Egami, Takashi Watanabe, Ayano Nomura-Fukushima, Hisashi Nomura, Hayato Takahashi, Jun Yamagami, John R Stanley, Osamu Ohara, Masayuki Amagai
    • Organizer
      The 46th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] IFN-gamma signaling is pro-inflammatory in T cells but immunoregulatory in non-T and B cell population in interface dermatitis model2021

    • Author(s)
      Miho Mukai, Hayato Takahashi, Masayuki Amagai
    • Organizer
      The 46th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Immunoregulatory roles of IFN-gamma signaling in non-T and B cell population is important for suppression of interface dermatitis in mouse2021

    • Author(s)
      Miho Mukai, Hayato Takahashi, Masayuki Amagai
    • Organizer
      2021 Society for Investigative Dermatology Annual Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] IL-27 plays an important role in anti-desmoglein 3 antibody production in pemphigus vulgaris mouse model.2020

    • Author(s)
      Aki Kamata, Hayato Takahashi, Hiroki Yoshida, Jun Yamagami, Masayuki Amagai
    • Organizer
      The 45th Annual Meeting of the Japanese Society for Investigative Dermatology
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 天疱瘡モデルマウスの抗デスモグレイン3抗体産生においてIL-27p28は重要な役割を果たす2020

    • Author(s)
      鎌田亜紀, 高橋勇人, 吉田裕樹, 伊藤宏美, 山上淳, 天谷雅行
    • Organizer
      第41回日本炎症・再生医学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] T cell-mediated, OX40-dependent peripheral tolerance to autoantigen, desmoglein 32019

    • Author(s)
      Hisato Iriki, Hayato Takahashi, Naoko Wada, Shohei Hori, Masayuki Amagai:
    • Organizer
      77th Annual Meeting, Society for Investigative Dermatology
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 自分の体の組織を攻撃してしまう自己免疫疾患を回避する仕組みを皮膚などの末梢組織でも解明

    • URL

      https://www.keio.ac.jp/ja/press-releases/2022/1/11/28-92005/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 免疫機能がコレステロール調節機構を利用し炎症を収束させる仕組みを発見

    • URL

      https://www.keio.ac.jp/ja/press-releases/2021/10/11/28-83025/

    • Related Report
      2022 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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