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Studies on immunopathogenesis of hantavirus infection

Research Project

Project/Area Number 16K08801
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Virology
Research InstitutionHokkaido University

Principal Investigator

Shimizu Kenta  北海道大学, 医学研究院, 助教 (20466840)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords細胞傷害性T細胞 / 免疫病原性 / 出血熱 / ハンタウイルス / CD8陽性T細胞 / 腎症候性出血熱 / マウスモデル
Outline of Final Research Achievements

I have reported that CD8-positive T cells are related to the pathogenesis of hemorrhagic fever with renal syndrome by using a mouse model. In this study, I tried to elucidate the mechanism by which CD8-positive T cells cause disease by using closely related high and low pathogenic clones. The quantity of hantavirus-specific T lymphocytes (CTLs) in high pathogenic clone-infected mice was comparable to that in low-pathgenic clone-infected mice. However, high pathogenic clone-infected mice showed up-regulation of genes relating to the effector function and chemotaxis of CTLs as well as genes relating to the activation-induced cell death of T cells, suggesting higher activity of CTLs in high pathogenic clone-infected mice. Considering the efficient viral growth of high pathogenic clone in kidney, the balance between quantities of the target and effector would be also important for disease outcome.

Academic Significance and Societal Importance of the Research Achievements

ハンタウイルス感染症は致死率の高い重要な疾患であるが、発症後の経過が急であることや、発生数が比較的少なく、診断が遅れることも多いため、患者の材料を用いて患者で起きていることを解析することが難しい。したがって、ヒトの病態を再現する動物モデルを確立することは病態発現メカニズムの解明や治療法の開発のため重要である。本研究では、近縁な病原性変異株を用いることで、病態関連因子を効率的にスクリーニングすることができた。今後さらに詳細なメカニズムを解明していくことで、治療法の開発に有用な情報を提供できると考えられる。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (1 results)

  • [Journal Article] Involvement of CD8+ T cells in the development of renal hemorrhage in a mouse model of hemorrhagic fever with renal syndrome2018

    • Author(s)
      Shimizu Kenta、Yoshimatsu Kumiko、Taruishi Midori、Tsuda Yoshimi、Arikawa Jiro
    • Journal Title

      Archives of Virology

      Volume: ー Issue: 6 Pages: 1577-1584

    • DOI

      10.1007/s00705-018-3786-x

    • NAID

      120006636169

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Appearance of renal hemorrhage in adult mice after inoculation of patient-derived hantavirus2017

    • Author(s)
      Kenta Shimizu, Takaaki Koma, Kumiko Yoshimatsu, Yoshimi Tsuda, Yuji Isegawa, Jiro Arikawa
    • Journal Title

      Virology Journal

      Volume: 14 Issue: 1

    • DOI

      10.1186/s12985-017-0686-8

    • NAID

      120006220000

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 腎症候性出血熱のマウスモデルにおける病態発現にCD8陽性T細胞が関与する2018

    • Author(s)
      清水健太、吉松組子、津田祥美、有川二郎
    • Organizer
      第15回北海道実験動物研究会学術集会
    • Related Report
      2018 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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