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Pandemic influenza risk prediction based on searching compensatory mechanism

Research Project

Project/Area Number 20K21723
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 58:Society medicine, nursing, and related fields
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

Watanabe Yohei  京都府立医科大学, 医学(系)研究科(研究院), 講師 (50452462)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords国際感染症 / 新興ウイルス / インフルエンザ / 宿主適応 / インフルエンザウイルス / パンデミック化 / 適応進化 / 代償性変化 / 適応変異 / ウイルス
Outline of Research at the Start

過去のパンデミックインフルエンザはなぜ特定の亜型(H1N1/H2N2/H3N2)に限定されているのか全く分かっていない。本研究の目的は、「インフルエンザウイルスに潜在的にパンデミック化しやすい群(亜型)としにくい群(亜型)が存在する」という新しい仮説を実証することである。実証されればパンデミックインフルエンザの研究や対策にパラダイムシフトをもたらす。

Outline of Final Research Achievements

We compared changes in HA property before and after introducing host-adaptive mutations between influenza viruses that historically caused pandemics in the past (H1N1/H3N2 subtypes) and those that are highly pathogenic but have not yet become pandemics (H5N1 subtype). The results showed that, in H1N1/H3N2-HA, acquisition of human-type receptor binding specificity by mutagenesis is not accompanied by compensatory changes in membrane fusion pH threshold and HA structural stability, and its characteristics are significantly different from those in H5N1-HA. Additional analyses of mutation groups for PB2 and NA genes showed that some mutations enhance replicative advantage and remaining others reduce it, suggesting that coordination and tune-up by multiple gene mutations are important for pandemics emergence.

Academic Significance and Societal Importance of the Research Achievements

「高病原性インフルエンザウイルスがパンデミック化するのか」という問いに対する科学的根拠は少ない。本研究の遂行によって、宿主適応過程におけるH5N1-HAの特性変化が過去にパンデミックを起こしたH1N1/H3N2-HAとは異なる可能性が示された。得られた知見はパンデミックインフルエンザに対するさらなる理解と今後のパンデミック対策へのより効果的な施策に役立つものと考えられる。

Report

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

    (17 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (5 results) (of which Invited: 2 results) Remarks (3 results)

  • [Int'l Joint Research] Alexandria University/Damanhour University(エジプト)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Damanhour University/Alexandria University(エジプト)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Damanhour University/Alexandria University(エジプト)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Stimulation of interferon-β responses by aberrant SARS-CoV-2 small viral RNAs acting as retinoic acid-inducible gene-I agonists2023

    • Author(s)
      Arai Yasuha、Yamanaka Itaru、Okamoto Toru、Isobe Ayana、Nakai Naomi、Kamimura Naoko、Suzuki Tatsuya、Daidoji Tomo、Ono Takao、Nakaya Takaaki、Matsumoto Kazuhiko、Okuzaki Daisuke、Watanabe Yohei
    • Journal Title

      iScience

      Volume: 26 Issue: 1 Pages: 105742-105742

    • DOI

      10.1016/j.isci.2022.105742

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ACE2 N-glycosylation modulates interactions with SARS-CoV-2 spike protein in a site-specific manner2022

    • Author(s)
      Isobe Ayana、Arai Yasuha、Kuroda Daisuke、Okumura Nobuaki、Ono Takao、Ushiba Shota、Nakakita Shin-ichi、Daidoji Tomo、Suzuki Yasuo、Nakaya Takaaki、Matsumoto Kazuhiko、Watanabe Yohei
    • Journal Title

      Communications Biology

      Volume: 5 Issue: 1 Pages: 1188-1188

    • DOI

      10.1038/s42003-022-04170-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Double mutations in the H9N2 avian influenza virus PB2 gene act cooperatively to increase viral host adaptation and replication for human infections2021

    • Author(s)
      Elgendy Emad Mohamed、Arai Yasuha、Kawashita Norihito、Isobe Ayana、Daidoji Tomo、Ibrahim Madiha Salah、Ono Takao、Takagi Tatsuya、Nakaya Takaaki、Matsumoto Kazuhiko、Watanabe Yohei
    • Journal Title

      Journal of General Virology

      Volume: 102 Issue: 6 Pages: 1-17

    • DOI

      10.1099/jgv.0.001612

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] H9N2 Influenza Virus Infections in Human Cells Require a Balance between Neuraminidase Sialidase Activity and Hemagglutinin Receptor Affinity2020

    • Author(s)
      Arai Yasuha、Elgendy Emad Mohamed、Daidoji Tomo、Ibrahim Madiha Salah、Ono Takao、Sriwilaijaroen Nongluk、Suzuki Yasuo、Nakaya Takaaki、Matsumoto Kazuhiko、Watanabe Yohei
    • Journal Title

      Journal of Virology

      Volume: 94 Issue: 18

    • DOI

      10.1128/jvi.01210-20

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] PA Mutations Inherited during Viral Evolution Act Cooperatively To Increase Replication of Contemporary H5N1 Influenza Virus with an Expanded Host Range2020

    • Author(s)
      Arai Yasuha、Kawashita Norihito、Elgendy Emad Mohamed、Ibrahim Madiha Salah、Daidoji Tomo、Ono Takao、Takagi Tatsuya、Nakaya Takaaki、Matsumoto Kazuhiko、Watanabe Yohei
    • Journal Title

      Journal of Virology

      Volume: 95 Issue: 1

    • DOI

      10.1128/jvi.01582-20

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] “Genetic tuning” of avian influenza virus host adaptation from birds to humans2020

    • Author(s)
      Arai Yasuha、Watanabe Yohei
    • Journal Title

      Biosafety and Health

      Volume: Online ahead of print Issue: 2 Pages: 1-3

    • DOI

      10.1016/j.bsheal.2020.11.006

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Adaptive dynamics of emerging viruses at interfaces between animals and humans2023

    • Author(s)
      Watanabe Y
    • Organizer
      帯広畜産大学大学院特別セミナー(英語発表)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Stimulation of IFN-beta responses by aberrant SARS-CoV-2 small viral RNAs2022

    • Author(s)
      Arai Y, Yamanaka I, Okamoto T, Isobe A, Nakai N, Kamimura N, Suzuki T, Daidoj T, Nakaya T, Okuzaki D, Watanabe Y
    • Organizer
      第23回日本RNA学会年会(英語発表)
    • Related Report
      2022 Annual Research Report
  • [Presentation] ACE2 N-glycosylation modulates interactions with SARS-CoV-2 spike protein in a site-specific manner2022

    • Author(s)
      Isobe A, Arai Y, Okumura N, Ono T, Nakakita S, Daidoji T, Suzuki Y, Nakaya T, Matsumoto K, Watanabe Y
    • Organizer
      第69回日本ウイルス学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 近年中国で優勢に流行するH9N2亜型鳥インフルエンザウイルスのPB2遺伝子に選択された同時変異群はヒト適応性を高く変化させている2021

    • Author(s)
      荒井泰葉、Emad M. Elgendy, 川下理日人、磯邉綾菜、大道寺智、中屋隆明、渡邊洋平
    • Organizer
      第68回日本ウイルス学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] インフルエンザウイルス 鳥類との共生と宿主適応2020

    • Author(s)
      渡邊洋平
    • Organizer
      第61回日本臨床ウイルス学会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Remarks] 京都府立医科大学プレスリリース

    • URL

      https://www.kpu-m.ac.jp/doc/news/2022/20221209.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] マイナビニュースなどで紹介

    • URL

      https://news.mynavi.jp/techplus/article/20221209-2534081/2

    • Related Report
      2022 Annual Research Report
  • [Remarks] 京都府立医科大学 感染病態学HP

    • URL

      http://www.f.kpu-m.ac.jp/k/did/

    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-08-03   Modified: 2024-01-30  

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