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Analysis of the pathogenesis of acute respiratory viral infections.

Research Project

Project/Area Number 18H02352
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionNational Institute of Infectious Diseases

Principal Investigator

Sakai Kouji  国立感染症研究所, ウイルス第三部, 主任研究官 (70515535)

Co-Investigator(Kenkyū-buntansha) 後藤 慎平  京都大学, 医学研究科, 特定准教授 (50747219)
入江 崇  広島大学, 医系科学研究科(医), 准教授 (70419498)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2019: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Keywords急性呼吸器ウイルス / ウイルス膜蛋白質 / 開裂 / 宿主プロテアーゼ / 病原性 / インフエンザウイルス / パラミクソウイルス / インフルエンザウイルス / Tmprss2 / 膜蛋白質の開裂 / 肺オルガノイド / センダイウイルス / TMPRSS2 / 宿主域
Outline of Final Research Achievements

Using TMPRSS2 gene knockout mice, we showed that the host protease TMPRSS2 is an essential host factor for the acquisition of Sendai virus infectivity, as well as seasonal influenza A virus (IAV).We demonstrated that two amino acid sequences in HA of seasonal IAV H3N2 are involved in the protease availability other than TMPRSS2. H3N2 variant (H3N2v) viruses with such an mutation in HA seaquences was found to have protease-availability other than TMPRSS2.
Using airway epithelial cells and alveolar epithelial cells differentiated and induced from human iPS cells, we constructed an infection model of acute respiratory virus infection.

Academic Significance and Societal Importance of the Research Achievements

パラミクソウイルスについても、オルソミクソウイルスと同様に、生体内でのウイルス膜蛋白質開裂過程は、TMPRSS2が重要な宿主因子であり、共通の原理であると考えられた。一方、このプロテアーゼ利用能は、1アミノ酸変異で容易に変化した。また、これら変異を持つウイルス既に自然界にも存在し、ヒトに浸潤していた。本研究から、急性呼吸器ウイルスの広域スペクトルの新規治療薬として期待できるTMPRSS2を標的とする特異的阻害剤は、TMPRSS2特異的阻害剤耐性ウイルスを出現・選抜に寄与するリスクがあるとも考えられた。

Report

(2 results)
  • 2021 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • Research Products

    (11 results)

All 2019 2018 Other

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

  • [Journal Article] A single amino acid substitution within the Paramyxovirus Sendai virus nucleoprotein is a critical determinant for production of IFN-beta-inducing copyback-type defective interfering genomes.2018

    • Author(s)
      1.Yoshida A, Kawabata R, Honda T, Sakai K, Ami Y, Sakaguchi T, Irie T.
    • Journal Title

      Journal of Virology

      Volume: 92 Issue: 5

    • DOI

      10.1128/jvi.02094-17

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 宿主プロテアーゼTMPRSS2とインフルエンザウイルス2018

    • Author(s)
      酒井宏治
    • Journal Title

      獣医畜産新報

      Volume: 71 Pages: 414-424

    • Related Report
      2018 Annual Research Report
  • [Presentation] Role of an oligosaccharide in the hemagglutinin protein on the pathogenesis of H3N2 influenza A virus.2019

    • Author(s)
      Kouji Sakai, Naoya Nagata, Kimie Nomura, Takashi Irie, Kazuaki Takehara, Hiroaki Kanda, Yasushi Ami
    • Organizer
      The 1st Influenza and other Infections
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] センダイウイルスの宿主マウスでの病原性発現機序と宿主免疫系への貢献2019

    • Author(s)
      酒井宏治
    • Organizer
      8th Negative Strand Virus-Japan Symposium
    • Related Report
      2018 Annual Research Report
  • [Presentation] The serine protease TMPRSS2 plays a major role for in vivo replication of sendai virus in a natural host.2018

    • Author(s)
      Kouji Sakai, Takashi Irie, Naoya Nagata, Kazuaki Takehara, Yasushi Ami,
    • Organizer
      The 17th Awaji International Forum on Infection and Immunity
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characterization of a Sendai virus isolate producing copyback-type defective viral RNA and its potential as a vaccine adjuvant.2018

    • Author(s)
      Asuka Yoshida, Kouji Sakai, Ryoko Kawabata, Takemasa Sakaguchi, Takashi Irie
    • Organizer
      The 17th Awaji International Forum on Infection and Immunity
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 変異型インフルエンザウイルスH3N2のHA開裂におけるTMPRSS2利用能と病原性解析2018

    • Author(s)
      酒井宏治、永田直也、須崎百合子、竹原一明、網康至
    • Organizer
      第161回日本獣医学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] The serine protease TMPRSS2 plays a major role for in vivo replication of mouse parainfluenza viruses in a natural host.2018

    • Author(s)
      Kouji Sakai, Takashi Irie, Naoya Nagata, Yuriko Suzaki, Kazuaki Takehara, Yasushi Ami
    • Organizer
      第66回日本ウイルス学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Remarks] 国立感染症研究所年報

    • URL

      https://www.niid.go.jp/niid/ja/anual.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] ウイルス第三部 - 国立感染症研究所

    • URL

      https://www.niid.go.jp/niid/ja/from-vir3.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] researchmap

    • URL

      https://researchmap.jp/read0091853/

    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2023-01-30  

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