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Structure and function relationship of retrovirus envelope protein that induces epithelial cell transformation

Research Project

Project/Area Number 17K08848
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

MAEDA Naoyoshi  北海道大学, 薬学研究院, 特任准教授 (80444800)

Project Period (FY) 2017-04-01 – 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 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsレトロウイルス / JSRV / ENTV / トランスフォーメーション / 腫瘍 / タンパク質 / 構造解析 / 宿主因子 / ウィルス / 癌 / 細胞・組織 / シグナル伝達 / 蛋白質
Outline of Final Research Achievements

JSRV Envelope (Env) functions as a dominant oncoprotein in transforming fibroblast and epithelial cells. Several candidates for interacting partners of the Env CT region have been found in MALDI-TOF MS analysis. One candidate is vimentin, a major intermediate filament protein. Their interaction was confirmed by multiple assays. Vimentin on the cell surface co-localized with Env in transformed cells. In addition, a vimentin inhibitor inhibited transformation by the JSRV Env in a dose-dependent manner.
The Env SU domain has been shown to form a complex consisting of several dimers or trimers. CD spectroscopic analysis revealed that the SU domain has about 34% beta-sheet, 3.8% alpha-helix, and 15% turn. Further, the structure of the SU domain has been observed by transmission electron microscopy and cryo-electron microscopy, which showed that the SU protein complex looks like a
bunch of mushrooms, consisting of a head domain and a string domain.

Academic Significance and Societal Importance of the Research Achievements

エンベロープは本来、標的細胞への侵入の際に機能するウイルス膜タンパク質であるが、JSRV/ENTVエンベロープはがん遺伝子としても機能することで呼吸器系の上皮細胞を腫瘍化し、腺がんを発症させる極めてまれな題材であり、腫瘍ウイルス学の発展に寄与することができる学術的価値を有している。またJSRVとENTVのエンベロープは、GPIアンカー型分子Hyal-2 を受容体として細胞侵入時に使用するにもかかわらず、ヒツジ個体で腫瘍発生器官を異にすることから、「ウイルス感染→細胞指向性→発がん」を研究する上で理想的なモデルになる。また、エンベロープの構造機能相関の解明は、有効な治療法やワクチン開発に繋がる。

Report

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

    (11 results)

All 2020 2019 2018 2017

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (4 results) Book (3 results)

  • [Journal Article] Therapeutic effects of soluble human leukocyte antigen G2 isoform in lupus-prone MRL/lpr mice2020

    • Author(s)
      Watanabe Hiroshi、Kuroki Kimiko、Yamada Chisato、Saburi Yukari、Maeda Naoyoshi、Maenaka Katsumi
    • Journal Title

      Human Immunology

      Volume: 81 Issue: 4 Pages: 186-190

    • DOI

      10.1016/j.humimm.2019.11.002

    • NAID

      120007034052

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Roles of Matricellular Proteins in Oncogenic Virus-Induced Cancers and Their Potential Utilities as Therapeutic Targets2017

    • Author(s)
      Maeda Naoyoshi、Maenaka Katsumi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 18 Issue: 10 Pages: 2198-2198

    • DOI

      10.3390/ijms18102198

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structural and thermodynamic analyses reveal critical features of glycopeptide recognition by the human PILRα immune cell receptor2017

    • Author(s)
      Furukawa Atsushi、Kakita Kosuke、Yamada Tomoki、Ishizuka Mikihiro、Sakamoto Jiro、Hatori Nanao、Maeda Naoyoshi、Ohsaka Fumina、Saitoh Takashi、Nomura Takao、Kuroki Kimiko、Nambu Hisanori、Arase Hisashi、Matsunaga Shigeki、Anada Masahiro、Ose Toyoyuki、Hashimoto Shunichi、Maenaka Katsumi
    • Journal Title

      Journal of Biological Chemistry

      Volume: 292 Issue: 51 Pages: 21128-21136

    • DOI

      10.1074/jbc.m117.799239

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Therapeutic application of human leukocyte antigen-G1 improves atopic dermatitis-like skin lesions in mice2017

    • Author(s)
      Maeda Naoyoshi、Yamada Chisato、Takahashi Ami、Kuroki Kimiko、Maenaka Katsumi
    • Journal Title

      International Immunopharmacology

      Volume: 50 Pages: 202-207

    • DOI

      10.1016/j.intimp.2017.06.026

    • NAID

      120006523715

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Structural analyses of jaagsiekte sheep retrovirus envelope protein2019

    • Author(s)
      前田直良, 猪島康雄, 前仲勝実
    • Organizer
      第67回日本ウイルス学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Immunosuppressive function of HLA-G2 protein in vivo2019

    • Author(s)
      Hiroshi Watanabe, Kimiko Kuroki, Chisato Yamada, Yukari Saburi, Naoyoshi Maeda, Katsumi Maenaka
    • Organizer
      第48回日本免疫学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Identification of cellular factors that interact with jaagsiekte sheep retrovirus envelope protein2018

    • Author(s)
      前田直良、猪島康雄、前仲勝実
    • Organizer
      第66回日本ウイルス学会学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] 成人T細胞白血病細胞のNF-kB恒常的活性化を阻害する低分子化合物の蛍光・発光アッセイによる探索2017

    • Author(s)
      前田直良、宮崎夏樹、乙黒聡子、吉満誠、原博満、前仲勝実
    • Organizer
      第65回日本ウイルス学会学術集会
    • Related Report
      2017 Research-status Report
  • [Book] 膜タンパク質工学ハンドブック2020

    • Author(s)
      前仲勝実、喜多俊介、古川敦、野村尚生、福原秀雄、前田直良
    • Total Pages
      624
    • Publisher
      エヌ・ティー・エス
    • Related Report
      2019 Annual Research Report
  • [Book] 動物の感染症〈第四版〉2019

    • Author(s)
      前田直良ほか
    • Total Pages
      352
    • Publisher
      近代出版
    • ISBN
      9784874022504
    • Related Report
      2018 Research-status Report
  • [Book] Horizons in Cancer Research2018

    • Author(s)
      Maeda Naoyoshi、Maenaka Katsumi
    • Total Pages
      240
    • Publisher
      Nova Science Publishers
    • ISBN
      9781536132960
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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