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Prion protein protects mice from lethal infection with influenza A virus

Research Project

Project/Area Number 16K10029
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Pediatrics
Research InstitutionThe University of Tokushima

Principal Investigator

CHIDA Junji  徳島大学, 先端酵素学研究所(次世代), 助教 (20437651)

Research Collaborator HARA Hideuki  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsインフルエンザ / プリオン蛋白質 / 抗プリオン抗体 / 脳症 / 多臓器不全 / インフルエンザAウイルス / 抗PrP抗体 / 換気障害 / 浮腫 / 活性酸素 / 抗酸化酵素 / 銅イオン / プリオン / インフルエンザウイルス / インフルエンザ脳症 / Src family kinase / ミトコンドリア
Outline of Final Research Achievements

Compared with wild-type (WT) mice, PrP-KO mice (KO) were highly susceptible to influenza A viruses (IAVs), with higher mortality. Infected KO lungs were severely injured, with higher inflammation of epithelial cells, and contained higher reactive oxygen species (ROS) than WT lungs. Treatment with a ROS scavenger or an inhibitor of xanthine oxidase, a major ROS-generating enzyme in IAV-infected lungs, rescued KO mice from the lethal infection with IAV. Moreover, KO mice transgenic for PrP with a deletion of the Cu-binding OR region, Tg(ΔOR)/KO mice, were also highly susceptible to IAV infection. These results indicate that PrP has a protective role against lethal infection with IAVs through the Cu-binding OR region by reducing ROS in infected lungs. Cu content and the activity of SOD1, were lower in KO and Tg(ΔOR)/KO lungs than in WT lungs. It is thus conceivable that PrP functions to maintain Cu content and regulate SOD1 through the OR region in lungs.

Academic Significance and Societal Importance of the Research Achievements

これまでPrPは脳の神経細胞で特に高発現していること、PrPの構造変異体(異常型PrP)は凝集体を形成し、プリオン病を引き起こすことが知られている。しかし、PrPのKOマウスは正常に成長することから、PrPの生体機能は不明であった。従って、本研究はこれまで不明であったPrPの生体機能を解明する独創的研究であり、インフルエンザの病態の理解のみならずプリオン病の理解にも繋がる。本研究ではPrPが肺を構成する肺胞上皮やクララ細胞内の銅イオン濃度を保持することでSOD1の酵素活性を調節し、その結果、IAV感染により産生されるROSを不活化し、インフルエンザの重症化を軽減していることを明確にした。

Report

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

    (15 results)

All 2019 2018 2017 2016

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 3 results,  Acknowledgement Compliant: 1 results) Presentation (5 results) Book (1 results) Patent(Industrial Property Rights) (2 results) (of which Overseas: 1 results)

  • [Journal Article] Cellular prion protein-mediated protection against influenza A virus infection2019

    • Author(s)
      Chida J, Sakaguchi S.
    • Journal Title

      Future virology

      Volume: -

    • NAID

      120006769729

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Prion protein protects mice from lethal infection with influenza A viruses2018

    • Author(s)
      Chida Junji、Hara Hideyuki、Yano Masashi、Uchiyama Keiji、Das Nandita Rani、Takahashi Etsuhisa、Miyata Hironori、Tomioka Yukiko、Ito Toshihiro、Kido Hiroshi、Sakaguchi Suehiro
    • Journal Title

      PLOS Pathogens

      Volume: 14 Issue: 5 Pages: e1007049-e1007049

    • DOI

      10.1371/journal.ppat.1007049

    • NAID

      120006524496

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 宿主因子を標的にした新たなインフルエンザ治療の試み.2018

    • Author(s)
      千田 淳司, 木戸 博, 坂口 末廣.
    • Journal Title

      Bio Clinica

      Volume: 256 Pages: 52-55

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Roles of Prion Protein in Virus Infections2018

    • Author(s)
      Sakaguchi Suehiro、Chida Junji
    • Journal Title

      DNA and Cell Biology

      Volume: 37 Issue: 10 Pages: 808-811

    • DOI

      10.1089/dna.2018.4402

    • NAID

      120006731765

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Prion Protein Devoid of the Octapeptide Repeat Region Delays Bovine Spongiform Encephalopathy Pathogenesis in Mice.2017

    • Author(s)
      Hara H, Miyata H, Das NR, Chida J, Yoshimochi T, Uchiyama K, Watanabe H, Kondoh G, Yokoyama T, Sakaguchi S
    • Journal Title

      Journal of Virology

      Volume: - Issue: 1

    • DOI

      10.1128/jvi.01368-17

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prions amplify through degradation of the VPS10P sorting receptor sortilin.2017

    • Author(s)
      Uchiyama K, Tomita M, Yano M, Chida J, Hara H, Das NR, Nykjaer A, Sakaguchi S
    • Journal Title

      PLoS Pathogenes

      Volume: - Issue: 6 Pages: e1006470-e1006470

    • DOI

      10.1371/journal.ppat.1006470

    • NAID

      120006334183

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of prion protein devoid of the N-terminal residues 25-50 on prion pathogenesis in mice.2017

    • Author(s)
      Nandita Rani Das, Hironori Miyata, Hideyuki Hara, Keiji Uchiyama, Junji Chida, Masashi Yano, Hitomi Watanabe, Gen Kondoh, Suehiro Sakaguchi
    • Journal Title

      Archives of Virology

      Volume: 印刷中 Issue: 7 Pages: 1867-1876

    • DOI

      10.1007/s00705-017-3295-3

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Influenza virus infection triggers de novo generation of prions in neuronal cells.2018

    • Author(s)
      原英之, 千田 淳司, 坂口 末廣.
    • Organizer
      第41回日本分子生物学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Prion protein reduces influenza A virus-induced lung injury in mice.2018

    • Author(s)
      千田 淳司, 原英之, 坂口 末廣.
    • Organizer
      第66回日本ウイルス学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Prion protein protects mice from lethal infection with influenza A viruses.2017

    • Author(s)
      千田 淳司, 原 英之, 坂口 末廣
    • Organizer
      ConBio2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 肺で発現する正常プリオン蛋白質の機能解析.2017

    • Author(s)
      千田 淳司, 原 英之, 坂口 末廣
    • Organizer
      第32回中国四国ウイルス研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Prion-infected neuroblastoma cells are resistant to influenza virus.2017

    • Author(s)
      原 英之, 千田 淳司, 坂口 末廣
    • Organizer
      ConBio2017
    • Related Report
      2017 Research-status Report
  • [Book] Bio Clinica2018

    • Author(s)
      千田 淳司, 木戸 博, 坂口 末廣
    • Total Pages
      4
    • Publisher
      北隆館
    • Related Report
      2017 Research-status Report
  • [Patent(Industrial Property Rights)] 血液検体の ATP 測定方法及びキット2016

    • Inventor(s)
      石田, 花田, 谷, 渡慶次, 木戸, 千田
    • Industrial Property Rights Holder
      国立大学法人北海道大学, 国立大学法人徳島大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2016
    • Acquisition Date
      2018
    • Related Report
      2017 Research-status Report
  • [Patent(Industrial Property Rights)] 抗プリオン蛋白質抗体およびその用途2016

    • Inventor(s)
      坂口 末廣, 千田 淳司
    • Industrial Property Rights Holder
      徳島大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2016-04-05
    • Related Report
      2016 Research-status Report
    • Overseas

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Published: 2016-04-21   Modified: 2020-03-30  

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