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Structural study of beta-coronavirus particle formation mechanism

Research Project

Project/Area Number 22K15046
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 43020:Structural biochemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

ZHANG ZHIKUAN  東京大学, 大学院薬学系研究科(薬学部), 助教 (60866937)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2022: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsベータコロナウイルス / SARS-CoV-2 / Membrane protein / 粒子形成 / M protein / クライオ電子顕微鏡 / ウイルス粒子形成 / COVID19 / 構造生物学 / クライオ電顕
Outline of Research at the Start

2019年末からアウトブレークしたCOVID-19は依然として世界的に深刻な危機をもたらしている。SARS-CoV-2はこれまでに報告されたSARSおよびMERSウイルスと同様に、ベータコロナウイルス (β-CoV) 属に分類されている。β-CoV属のMタンパク質はウイルス粒子形成の段階で中心的な役割を果たしている。しかし、Mタンパク質の構造は未知であり、それによるウイルス粒子形成の分子基盤も解明されていない。本課題では、β-CoVのMタンパク質を対象とし、クライオ電子顕微鏡解析によるMタンパク質の立体構造を解明することで、β-CoVの粒子形成の分子基盤を構築することを目的とする。

Outline of Final Research Achievements

The outbreak of COVID-19 since the end of 2019 has not ended, and new infections and post-infection long COVID remain a significant public health crisis. Although research on the SARS-CoV-2, the cause of COVID-19, has been active worldwide, the virus particle formation mechanism was still largely unknown.
In this research, we used cryo-EM analysis to visualize the high-resolution three-dimensional structure and structural polymorphism of SARS-CoV-2 M protein, a structural protein required for the formation of SARS-CoV-2 virus particles. M proteins forms compact dimeric structures with two different conformations known as the long and short forms, respectively. These structures suggest that the structural polymorphism of M protein is important for the formation of SARS-CoV-2 particles medicated by M protein.

Academic Significance and Societal Importance of the Research Achievements

SARS-CoV-2は終息しておらず、今後も人類と共存する病原体の一種である。現在、プロテアーゼ阻害剤やSタンパク質を発現させたmRNAワクチンなどの治療・予防方法が主に開発が進められてきたが、その変異株が既存の治療法を迅速に無効化するという懸念がある。よって、より多面的な治療手法の開発が必要であり、ウイルスの粒子形成に重要な役割を果たすMタンパク質は可能性のある創薬標的である。本研究で可視化されたのMタンパク質の3次元構造は、今後Mタンパク質を標的とする創薬の構造基盤を提供している。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (9 results)

All 2024 2023 2022 Other

All Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (1 results) (of which Int'l Joint Research: 1 results) Remarks (2 results)

  • [Journal Article] Structural basis of hepatitis B virus receptor binding2024

    • Author(s)
      Asami Jinta、Park Jae-Hyun、Nomura Yayoi、Kobayashi Chisa、Mifune Junki、Ishimoto Naito、Uemura Tomoko、Liu Kehong、Sato Yumi、Zhang Zhikuan、Muramatsu Masamichi、Wakita Takaji、Drew David、Iwata So、Shimizu Toshiyuki、Watashi Koichi、Park Sam-Yong、Nomura Norimichi、Ohto Umeharu
    • Journal Title

      Nature Structural & Molecular Biology

      Volume: 31 Issue: 3 Pages: 447-454

    • DOI

      10.1038/s41594-023-01191-5

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A novel Toll-like receptor 7/8-specific antagonist E6742 ameliorates clinically relevant disease parameters in murine models of lupus2023

    • Author(s)
      Ishizaka Sally T.、Hawkins Lynn、Chen Qian、Tago Fumitoshi、Yagi Takuya、Sakaniwa Kentaro、Zhang Zhikuan、Shimizu Toshiyuki、Shirato Manabu
    • Journal Title

      European Journal of Pharmacology

      Volume: 957 Pages: 175962-175962

    • DOI

      10.1016/j.ejphar.2023.175962

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural basis for thioredoxin-mediated suppression of NLRP1 inflammasome2023

    • Author(s)
      Zhang Zhikuan、Shibata Takuma、Fujimura Akiko、Kitaura Jiro、Miyake Kensuke、Ohto Umeharu、Shimizu Toshiyuki
    • Journal Title

      Nature

      Volume: 622 Issue: 7981 Pages: 188-194

    • DOI

      10.1038/s41586-023-06532-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure of SARS-CoV-2 membrane protein essential for virus assembly2022

    • Author(s)
      Zhang Zhikuan、Nomura Norimichi、Muramoto Yukiko、Ekimoto Toru、Uemura Tomoko、Liu Kehong、Yui Moeko、Kono Nozomu、Aoki Junken、Ikeguchi Mitsunori、Noda Takeshi、Iwata So、Ohto Umeharu、Shimizu Toshiyuki
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 4399-4399

    • DOI

      10.1038/s41467-022-32019-3

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Structure of the?bile acid transporter?and HBV receptor NTCP2022

    • Author(s)
      Asami Jinta、Kimura Kanako Terakado、Fujita-Fujiharu Yoko、Ishida Hanako、Zhang Zhikuan、Nomura Yayoi、Liu Kehong、Uemura Tomoko、Sato Yumi、Ono Masatsugu、Yamamoto Masaki、Noda Takeshi、Shigematsu Hideki、Drew David、Iwata So、Shimizu Toshiyuki、Nomura Norimichi、Ohto Umeharu
    • Journal Title

      Nature

      Volume: 606 Issue: 7916 Pages: 1021-1026

    • DOI

      10.1038/s41586-022-04845-4

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Propofol directly binds to and inhibits <scp>TLR7</scp>2022

    • Author(s)
      Koutsogiannaki Sophia、Bu Weiming、Maisat Wiriya、Manzor Mariel、Zhang Zhikuan、Ohto Umeharu、Eckenhoff Roderic G.、Yuki Koichi
    • Journal Title

      The FASEB Journal

      Volume: 36 Issue: 8

    • DOI

      10.1096/fj.202200312r

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Structural analysis of SARS-CoV-2 membrane protein2023

    • Author(s)
      Zhikuan Zhang, Umeharu Ohto, Toshiyuki Shimizu
    • Organizer
      26th Congress and General Assembly of the International Union of Crystallography (IUCr 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 新型コロナウイルスのウイルス形成に必須の膜タンパク質の構造を解明

    • URL

      https://www.f.u-tokyo.ac.jp/topics.html?page=1&key=1659694874

    • Related Report
      2022 Research-status Report
  • [Remarks] 新型コロナウイルスのウイルス形成に必須の膜タンパク質の構造を解明

    • URL

      https://www.u-tokyo.ac.jp/focus/ja/press/z0111_00052.html

    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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