• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Interleukin-27 dependent loss of memory CD4+ T-cells after malaria infection

Research Project

Project/Area Number 19K07528
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49040:Parasitology-related
Research InstitutionKobe Women's University

Principal Investigator

Kimura Daisuke  神戸女子大学, 健康福祉学部, 教授 (50423637)

Co-Investigator(Kenkyū-buntansha) 由井 克之  長崎大学, 医歯薬学総合研究科(医学系), 教授 (90274638)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsマラリア / 免疫記憶 / CD4陽性T細胞 / アポトーシス / 溶血性貧血 / T細胞 / IL-27 / CD4+T細胞
Outline of Research at the Start

マラリアに対する有効なワクチンはこれまでに開発されておらず、その原因の1つにマラリアでは免疫記憶が成立しにくいことが挙げられる。我々は、抑制因子IL-27を産生する新規制御性CD4+T細胞「Tr27」を見出し、マラリアにおける免疫抑制機構を報告した。さらに最近、抑制因子IL-27は記憶CD4+T細胞の形成・維持を阻害する結果を得た。本研究計画では、マラリア原虫特異的CD4+T細胞をモニター可能な系を用いて、IL-27による免疫記憶抑制のメカニズムを明らかにする。本研究成果は、マラリアにおける免疫記憶抑制の解除法開発へつながる基礎研究である。

Outline of Final Research Achievements

The reason why malaria is difficult to control is that Plasmodium falciparum infection does not maintain immune memory. Previously, we have shown that in a mouse model of malaria infection, activated CD4+ T cells die early after infection, but not in IL-27 receptor-deficient mice. Interestingly, this phenomenon was also observed in mice with drug-induced hemolytic anemia. This suggests that erythrocyte components destroyed by the malaria parasite prevent long-term survival of malaria-specific CD4+ T cells. The relationship between erythrocyte components and IL-27 signaling is currently being analyzed.

Academic Significance and Societal Importance of the Research Achievements

本研究目的である「IL-27による免疫記憶抑制メカニズム解明」は、これまでの我々独自の研究成果を発展させたものである。また、記憶T細胞の細胞死を誘発させる赤血球成分を特定できれば、記憶抑制メカニズムが明らかとなり、将来完成が期待されるワクチン効果を促進・維持させることで、マラリアワクチン開発へ向けて貢献ができる。また、これまで研究されてきた既存のワクチン候補中に本研究成果と組み合わせることで、効果が期待できる可能性も考えられる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2022 2021 2020 2019

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

  • [Journal Article] Type I interferon production elicits differential CD4+ T-cell responses in mice infected with Plasmodium berghei ANKA and P. chabaudi2022

    • Author(s)
      M Ntita, S-I Inoue, J-Yu Jian, G Bayarsaikhan, K Kimura, D Kimura, M Miyakoda E Nozaki, T Sakurai, D Fernandez-Ruiz, WR. Heath, K Yui.
    • Journal Title

      International Immunology

      Volume: 34 Issue: 1 Pages: 21-33

    • DOI

      10.1093/intimm/dxab090

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] CD49d marks Th1 and Tfh-like antigen-specific CD4+ T cells during Plasmodium chabaudi infection2021

    • Author(s)
      Jian JY, Inoue SI, Bayarsaikhan G, Miyakoda M, Kimura D, Kimura K, Nozaki E, Sakurai T, Fernandez-Ruiz D, Heath WR, Yui K.
    • Journal Title

      International Immunology

      Volume: 33 Issue: 8 Pages: 409-422

    • DOI

      10.1093/intimm/dxab020

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Activation and IL-10 production of specific CD4+ T cells are regulated by IL-27 during chronic infection with Plasmodium chabaudi.2020

    • Author(s)
      Sukhbaatar O, Kimura D, Miyakoda M, Nakamae S, Kimura K, Hara H, Yoshida H, Inoue SI, Yui K.
    • Journal Title

      Parasitol Int.

      Volume: 74 Pages: 101994-101994

    • DOI

      10.1016/j.parint.2019.101994

    • NAID

      120006988377

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Role of IL-10 in inhibiting protective immune responses against infection with heterologous Plasmodium parasites2019

    • Author(s)
      Nakamae Sayuri、Kimura Daisuke、Miyakoda Mana、Sukhbaatar Odsuren、Inoue Shin-Ichi、Yui Katsuyuki
    • Journal Title

      Parasitology International

      Volume: 70 Pages: 5-15

    • DOI

      10.1016/j.parint.2019.01.003

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] IL-27 inhibits the generation and/or maintenance of Plasmodium-specific memory CD4+ T cells during malaria infection2021

    • Author(s)
      Maria Lourdes Macalinao, Shin-Ichi Inoue, Sanjaadorj Tsogtsaikhan, Ganchimeg Bayarsaikhan, Jiun-Yu Jian, Kazumi Kimura, Daniel Fernandez-Ruiz, William R. Heath, Julius Hafalla, Hiroki Yoshida, Daisuke Kimura, Katsuyuki Yui
    • Organizer
      第90回日本寄生虫学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Transient IL-27 blockade enhances CD4+ T cell memory and protection against malaria2021

    • Author(s)
      Maria Lourdes Macalinao, Shin-Ichi Inoue, Sanjaadorj Tsogtsaikhan, Jiun-Yu Jian, Ganchimeg Bayarsaikhan, Kazumi Kimura, Daniel Fernandez-Ruiz, William R. Heath, Julius Hafalla, Hiroki Yoshida, Daisuke Kimura, Katsuyuki Yui
    • Organizer
      第50回日本免疫学会総会・学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Differences in memory CD4+ T-cells developed after infection with Plasmodium berghei ANKA and Plasmodium chabaudi chabaudi.2019

    • Author(s)
      Nitta Mbaya, Shin-Ichi Inoue, Ganchimeg Bayarsaikhan, Jiun-Yu Jian, Kazumi Kimura, Daisuke Kimura, Mana Miyakoda, Daniel Fernandez-Ruiz, William h R. Heat, Katsuyuki Yui
    • Organizer
      日本免疫学会総会・学術集会
    • Related Report
      2019 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi