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Elucidation of the mechanism of how baculoviruses produce a huge amount of occlusion bodies in host cells

Research Project

Project/Area Number 19H02966
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 39050:Insect science-related
Research InstitutionThe University of Tokyo

Principal Investigator

Katsuma Susumu  東京大学, 大学院農学生命科学研究科(農学部), 教授 (20378863)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Keywordsバキュロウイルス / ポリヘドリン / 多角体 / 大量発現 / バキュロウイルスベクター / 核移行 / 結晶化 / 昆虫細胞 / ポリヘドリン / 転写 / 翻訳 / 宿主制御 / ポリへドリン / 超発現 / プロモーター / カイコ / 培養細胞
Outline of Research at the Start

昆虫ウイルスの一種であるバキュロウイルスの最大の特徴は,感染の最後期に「多角体」と呼ばれる子孫ウイルスを含むタンパク性の結晶体を大量に産生することである.多角体の主成分はウイルスが合成するPOLHであり,感染細胞全タンパク質の50%を占めることもある.しかし,そのメカニズムは,大部分が未解明である.本研究では,polhの選択的転写機構,polh mRNAの効率的翻訳機構,POLHの選択的核移行システム,POLHの結晶化,およびウイルス包埋機構という未解明の各ステップに焦点を当て,最終的にバキュロウイルスが多角体の大量産生を実現する細胞内チューニングプロセスの全貌を解明することを目標とする.

Outline of Final Research Achievements

Baculoviruses are insect pathogens that produce a huge amount of occlusion bodies (OBs) in the nuclei of the infected cells at the very late stage of infection. OBs are composed mainly of a single viral protein called polyhedrin (POLH). By utilizing extremely high level expression of POLH in insect cells, baculoviral vector has been developed to produce foreign proteins including vaccines in insect cells. However, at present, it is still largely unknown how polh is hypertranscribed and how POLH is efficiently translated, transported into the nucleus, and crystallized. In this study, we attempted to solve these issues using Bombyx mori nucleopolyhedrovirus as a model.

Academic Significance and Societal Importance of the Research Achievements

バキュロウイルスベクター(Baculovirus Expression Vector System, BEVS)は、インフルエンザワクチンをはじめとするVirus-like particle (VLP)ワクチンの製造から獣医薬、試薬生産まで幅広く利用されている。そのような背景にも関わらず、バキュロウイルスが最終的に大量の多角体を感染細胞核内に産生するメカニズムは、開発から約40年経った今でもその大部分が未解明である。本研究でバキュロウイルス発現系のコアメカニズムを解明することは、それを模倣したウイルスフリーVLP産生系の開発やそれを用いた新しいワクチン生産技術の開発につながると考えられる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (18 results)

All 2022 2021 2020 2019 Other

All Journal Article (9 results) (of which Peer Reviewed: 8 results,  Open Access: 2 results) Presentation (6 results) (of which Invited: 2 results) Book (2 results) Remarks (1 results)

  • [Journal Article] H3K4me3 histone modification in baculovirus-infected silkworm cells2021

    • Author(s)
      Shoji K, Kokusho R, Kawamoto M, Suzuki Y, Katsuma S
    • Journal Title

      Virus Genes

      Volume: 57 Issue: 5 Pages: 459-463

    • DOI

      10.1007/s11262-021-01858-5

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bombyx mori nucleopolyhedrovirus ptp and egt genes are dispensable for triggering enhanced locomotory activity and climbing behavior in Bombyx mandarina larvae2021

    • Author(s)
      Kokusho R, Katsuma S
    • Journal Title

      J Invertebr Pathol

      Volume: 183 Pages: 107604-107604

    • DOI

      10.1016/j.jip.2021.107604

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 昆虫ウイルスの制御と利用,特集 ウイルスとたたかう農畜水産2021

    • Author(s)
      勝間進
    • Journal Title

      日本農学アカデミー会報

      Volume: 35 Pages: 11-13

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Loss of p24 from the Bombyx mori nucleopolyhedrovirus genome results in the formation of cuboidal occlusion bodies2021

    • Author(s)
      Kokusho R, Katsuma S
    • Journal Title

      Virology

      Volume: 559 Pages: 173-181

    • DOI

      10.1016/j.virol.2021.03.017

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hsp90 function is required for stable transcription of the baculovirus transactivator ie-1 gene2021

    • Author(s)
      Katsuma S
    • Journal Title

      Virus Research

      Volume: 291 Pages: 198200-198200

    • DOI

      10.1016/j.virusres.2020.198200

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-resolution analysis of baculovirus-induced host manipulation in the domestic silkworm, Bombyx mori2021

    • Author(s)
      Hikida Hiroyuki、Katsuma Susumu
    • Journal Title

      Parasitology

      Volume: 148 Issue: 1 Pages: 105-109

    • DOI

      10.1017/s0031182020001924

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterization of Bombyx mori nucleopolyhedrovirus infection in fat body-derived Bombyx mori cultured cells2020

    • Author(s)
      Matsuda-Imai N, Katsuma S
    • Journal Title

      J Invertebr Pathol

      Volume: 177 Pages: 107476-107476

    • DOI

      10.1016/j.jip.2020.107476

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bombyx mori nucleopolyhedrovirus Bm96 suppresses viral virulence in Bombyx mori larvae2020

    • Author(s)
      Hikida Hiroyuki、Kokusho Ryuhei、Matsuda-Imai Noriko、Katsuma Susumu
    • Journal Title

      Journal of Invertebrate Pathology

      Volume: 173 Pages: 107374-107374

    • DOI

      10.1016/j.jip.2020.107374

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Whole-genome sequencing and comparative transcriptome analysis of Bombyx mori nucleopolyhedrovirus La strain2020

    • Author(s)
      Fujimoto S, Kawamoto M, Shoji K, Suzuki Y, Katsuma S, Iwanaga M
    • Journal Title

      Virus Genes

      Volume: 56 Issue: 2 Pages: 249-259

    • DOI

      10.1007/s11262-019-01727-2

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] BmNPVゲノムに存在しないAcMNPV遺伝子の機能解析2022

    • Author(s)
      室塚慶大、勝間進
    • Organizer
      令和4年度蚕糸・昆虫機能利用学術講演会(日本蚕糸学会第92回大会)
    • Related Report
      2021 Annual Research Report
  • [Presentation] BmNPV感染カイコ細胞がARIF-1を介して形成する二種類の細胞内構造2021

    • Author(s)
      國生龍平、勝間進
    • Organizer
      第78回昆虫病理研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 昆虫ウイルスの制御と利用2020

    • Author(s)
      勝間進
    • Organizer
      日本農学アカデミー公開シンポジウム「ウイルスとたたかう農畜水産」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Bombyx mori nucleopolyhedrovirus gp37遺伝子の解析2020

    • Author(s)
      藤本正太・疋田弘之・國生龍平・鈴木智大・勝間進・岩永将司
    • Organizer
      令和2年度蚕糸・昆虫機能利用学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] カイコ核多角体病ウイルス感染細胞における宿主シャットオフ回避機構の解析2020

    • Author(s)
      疋田弘之・庄司佳祐・鈴木穣・勝間進
    • Organizer
      令和2年度蚕糸・昆虫機能利用学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 昆虫ウイルスと宿主昆虫との 相互作用を分子レベルで紐解く2019

    • Author(s)
      勝間進
    • Organizer
      第67回日本ウイルス学会学術集会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Book] バイオロジカル・コントロール 第2版2022

    • Author(s)
      仲井まどか、勝間進
    • Total Pages
      200
    • Publisher
      朝倉書店
    • ISBN
      9784254420463
    • Related Report
      2021 Annual Research Report
  • [Book] カイコの科学「カイコ幼虫の行動を操るバキュロウイルス」2020

    • Author(s)
      勝間進
    • Total Pages
      224
    • Publisher
      朝倉書店
    • ISBN
      9784254420432
    • Related Report
      2020 Annual Research Report
  • [Remarks] 東京大学昆虫遺伝研究室ホームページ

    • URL

      https://sites.google.com/view/igblab-ut-aba

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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