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Control mechanisms of regulatory T cell homeostasis by ERM proteins

Research Project

Project/Area Number 19K07621
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49070:Immunology-related
Research InstitutionShiga University of Medical Science

Principal Investigator

Hirata Takako  滋賀医科大学, 医学部, 教授 (00346199)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords自己免疫疾患 / 制御性T細胞 / ERMタンパク質 / 免疫学
Outline of Research at the Start

免疫恒常性の維持には制御性T細胞 (Treg) が生体内で安定的に維持されることが必須であり、その破綻は自己免疫疾患などの病態につながる。TregにはCD4陽性 (CD4 Treg) とCD8陽性 (CD8 Treg) の細胞系譜が存在するが、CD8 Tregの生体内維持機構の詳細は不明である。本研究は、moesinを欠損するマウスでCD8 Tregの減少と自己免疫疾患の発症を認めることから、ERMタンパク質に着目してCD8 Tregの維持機構を解明することを目的とする。Treg恒常性の破綻機序の一端を理解し、Treg安定性の人工的制御による自己免疫疾患治療へと展開する基盤の確立を目指す。

Outline of Final Research Achievements

One of the mechanisms for maintaining immune homeostasis is immunosuppression by regulatory T cells (Tregs). In addition to the well-known CD4-positive Tregs, there exist CD8-positive cell lineages (CD8 Tregs) that have immunosuppressive activity. In this research project, we found that among mouse CD8 T cells expressing CD44 and CD122, there was a fraction that binds to Qa-1 presenting self-antigen peptides, and this fraction exhibited immunosuppressive activity. We further found that this fraction showed gene expression profiles similar to those of virtual memory T cells, a subtype of T cells that have acquired memory-type phenotype without prior exposure to foreign antigens.

Academic Significance and Societal Importance of the Research Achievements

自己免疫疾患や臓器移植などにおいて免疫寛容を誘導する、あるいは逆に、免疫監視を阻害することで抗腫瘍免疫を強化しようとするためにTregを標的とした応用研究が行われている。Tregを標的とする治療においては、生体内での数・機能の制御が重要である。本研究成果は、Tregの特定のサブセットの表現型と機能の一端を明らかにするものであり、Tregの生体内運命を人為的に制御することによる効率的で副作用の少ない免疫療法につながることが期待される。

Report

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

    (17 results)

All 2022 2021 2020 2019 Other

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (9 results) Remarks (1 results)

  • [Journal Article] Isolation of TCR genes with tumor-killing activity from tumor-infiltrating and circulating lymphocytes in a tumor rejection cynomolgus macaque model2022

    • Author(s)
      Terada Koji、Kondo Kenta、Ishigaki Hirohito、Nagashima Ayaka、Satooka Hiroki、Nagano Seiji、Masuda Kyoko、Kawamura Teruhisa、Hirata Takako、Ogasawara Kazumasa、Itoh Yasushi、Kawamoto Hiroshi、Agata Yasutoshi
    • Journal Title

      Molecular Therapy - Oncolytics

      Volume: 24 Pages: 77-86

    • DOI

      10.1016/j.omto.2021.12.003

    • NAID

      120007182844

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The ERM protein moesin regulates natural killer cell homeostasis in vivo2022

    • Author(s)
      Satooka Hiroki、Matsui Makoto、Ichioka Satoko、Nakamura Yuzuki、Hirata Takako
    • Journal Title

      Cellular Immunology

      Volume: 371 Pages: 104456-104456

    • DOI

      10.1016/j.cellimm.2021.104456

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A novel Siglec-F+ neutrophil subset in the mouse nasal mucosa exhibits an activated phenotype and is increased in an allergic rhinitis model2020

    • Author(s)
      Matsui Makoto、Nagakubo Daisuke、Satooka Hiroki、Hirata Takako
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 526 Issue: 3 Pages: 599-606

    • DOI

      10.1016/j.bbrc.2020.03.122

    • NAID

      120006839260

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Citrullinated fibrinogen is a target of auto-antibodies in interstitial lung disease in mice with collagen-induced arthritis2020

    • Author(s)
      Sato Tomomi、Satooka Hiroki、Ichioka Satoko、Maruo Yoshihiro、Hirata Takako
    • Journal Title

      International Immunology

      Volume: - Issue: 8 Pages: 533-545

    • DOI

      10.1093/intimm/dxaa021

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterization of tumour-infiltrating lymphocytes in a tumour rejection cynomolgus macaque model2020

    • Author(s)
      Satooka Hiroki、Ishigaki Hirohito、Todo Kagefumi、Terada Koji、Agata Yasutoshi、Itoh Yasushi、Ogasawara Kazumasa、Hirata Takako
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 8414-8414

    • DOI

      10.1038/s41598-020-65488-x

    • NAID

      120006862372

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Alteration in endometrial helper T‐cell subgroups in chronic endometritis2020

    • Author(s)
      Kitazawa Jun、Kimura Fuminori、Nakamura Akiko、Morimune Aina、Hanada Tetsuro、Amano Tsukuru、Tsuji Shunichiro、Kasahara Kyoko、Satooka Hiroki、Hirata Takako、Kushima Ryoji、Murakami Takashi
    • Journal Title

      American Journal of Reproductive Immunology

      Volume: 85 Issue: 3

    • DOI

      10.1111/aji.13372

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] mDia1/3-dependent actin polymerization spatiotemporally controls LAT phosphorylation by Zap70 at the immune synapse.2020

    • Author(s)
      Thumkeo, D., Katsura, Y., Nishimura, Y., Kanchanawong, P., Tohyama, K., Ishizaki, T., Kitajima, S., Takahashi, C., Hirata, T., Watanabe, N., Krummel, M. F., and Narumiya, S.
    • Journal Title

      Sci. Adv.

      Volume: 6 Issue: 1 Pages: 2432-2432

    • DOI

      10.1126/sciadv.aay2432

    • NAID

      120006777011

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Isolation of TCR genes with tumor-killing activity from tumor-infiltrating lymphocytes in a tumor rejection cynomolgus macaque model2021

    • Author(s)
      Terada Koji、Kondo Kenta、Ishigaki Hirohito、Nagashima Ayaka、Satooka Hiroki、Nagano Seiji、Masuda Kyoko、Kawamura Teruhisa、Hirata Takako、Ogasawara Kazumasa、Itoh Yasushi、Kawamoto Hiroshi、Agata Yasutoshi
    • Organizer
      第50回日本免疫学会総会・学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Redox-mediated SOCS3 expression in regulatory T cells is involved in the development of autoimmunity2021

    • Author(s)
      Satooka Hiroki、Nakamura Yuzuki、Todo Kagefumi、Hirata Takako
    • Organizer
      第50回日本免疫学会総会・学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Citrullinated fibrinogen is a target of auto-antibodies in interstitial lung disease in mice with collagen-induced arthritis2021

    • Author(s)
      Sato Tomomi、Satooka Hiroki、Ichioka Satoko、Hirata Takako
    • Organizer
      第50回日本免疫学会総会・学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Production of secreted form of IgD during immune responses2021

    • Author(s)
      Todo Kagefumi、Satooka Hiroki、Hirata Takako
    • Organizer
      第50回日本免疫学会総会・学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Deficiency of moesin causes spontaneous lung inflammation in mice2021

    • Author(s)
      Nakamura Yuzuki、Satooka Hiroki、Hirata Takako
    • Organizer
      第50回日本免疫学会総会・学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Phagocytic cells are induced by activation of resting splenic B cells.2019

    • Author(s)
      Kyoko Asano, Kagefumi Todo, Takako Hirata.
    • Organizer
      第48回日本免疫学会総会・学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Redox-mediated signaling in regulatory T cells is involved in the development of autoimmunity.2019

    • Author(s)
      Hiroki Satooka, Tomomi Sato, Yuzuki Nakamura, Kagefumi Todo, Takako Hirata
    • Organizer
      第48回日本免疫学会総会・学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Involvement of IgD-expressing cells in type I hypersensitivity.2019

    • Author(s)
      Kagefumi Todo, Kyoko Asano, Hiroki Satooka, Takako Hirata
    • Organizer
      第48回日本免疫学会総会・学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Moesin regulates macrophage homeostasis in the lung and its deficiency leads to pulmonary inflammation.2019

    • Author(s)
      Yuzuki Nakamura, Hiroki Satooka, Takako Hirata
    • Organizer
      第48回日本免疫学会総会・学術集会
    • Related Report
      2019 Research-status Report
  • [Remarks] 研究内容 Research|滋賀医科大学 生命科学講座 生物学

    • URL

      http://www.shiga-med.ac.jp/~hqbio/research.html

    • Related Report
      2021 Annual Research Report 2019 Research-status Report

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

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