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Study of giant virus ecology and virus-host interaction in aquatic environments

Research Project

Project/Area Number 20H03078
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 40040:Aquatic life science-related
Research InstitutionTokyo University of Science

Principal Investigator

Takemura Masaharu  東京理科大学, 教養教育研究院神楽坂キャンパス教養部, 教授 (50303623)

Co-Investigator(Kenkyū-buntansha) 村田 和義  大学共同利用機関法人自然科学研究機構(新分野創成センター、アストロバイオロジーセンター、生命創成探究, 生命創成探究センター, 特任教授 (20311201)
緒方 博之  京都大学, 化学研究所, 教授 (70291432)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2020: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Keywords巨大ウイルス / メドゥーサウイルス / 水圏生命科学 / ウイルス・宿主相互作用 / 環境ウイルス / アカントアメーバ / 細胞変性効果 / DNAウイルス / ヒストン / 水圏生態系 / 細胞動態解析
Outline of Research at the Start

巨大ウイルスは、その複雑性から一部の機能を欠く細胞性生物であるとさえ言え、生物の進化・分類に新たな議論を投げかけているが、生態系レベルの研究はほとんどない。そこで本研究では、「水圏生態系において巨大ウイルスはどのような位置づけにあるのか」という問いを立て、宿主微生物を含めた水圏生態系の視点から、ウイルス・宿主相互作用ならびに巨大ウイルスの生態と進化を解明することを目的とし、「ウイルス・宿主相互作用」、「分布と多様性」、「ウイルス間競争」の3つ研究テーマを遂行する。この研究により、生態系の一員としての巨大ウイルスの生物学的意義が明らかとなり、水圏生態系の解明に大きく貢献することが期待される。

Outline of Final Research Achievements

Giant viruses greatly exceed previous viruses in particle size, genome size, gene contents, and structural complexity. This study aimed to elucidate virus-host interactions, which have not been elucidated much so far. Here we found that the host cell bunch formation ability of the hokutovirus occurs via a galactose recognition mechanism, that the cellular behavioral dynamics can be quantified using PKA3, which we have developed, to identify each virus-specific cytopathic effect, that the expressed genes of medusavirus can be divided into five categories according to the timing of the onset of the expression, that medusavirus particles are classified into four categories according to their internal conditions, and that the virion factory of cotonvirus is composed of various materials including lipid bilayer derived from the Golgi apparatus.

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的意義は、巨大ウイルスと宿主との相互作用に着目している点と、巨大ウイルスの局所的な多様性をもとに巨大ウイルスの地理的な分布の生物学的意義に着目している点にある。これらに焦点を当て、分子から生態までを網羅的・体系的に研究を推進している例はこれまでにない。本研究により、先行するフランスの研究グループに匹敵する巨大ウイルス研究の基盤の形成が期待できるとともに、国内外の巨大ウイルス研究、ウイルス学研究ならびに微生物生態学研究に、新たな方向性を示すことができる。水圏における微生物生態系の一員としての巨大ウイルスの生物学的意義が明らかとなり、水圏生命科学の発展に大きく寄与することが期待できる。

Report

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

    (35 results)

All 2023 2022 2021 2020 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results,  Open Access: 12 results) Presentation (17 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Book (4 results) Remarks (2 results)

  • [Journal Article] Analysis of morphological changes in the nucleus and vacuoles of Acanthamoeba castellanii following giant virus infection2023

    • Author(s)
      Sho Fukaya, Lisa Masuda, Masaharu Takemura
    • Journal Title

      Microbiol. Spectrum

      Volume: 11 Issue: 2

    • DOI

      10.1128/spectrum.04182-22

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] "Mamonoviridae", a proposed new family of the phylum Nucleocytoviricota2023

    • Author(s)
      Ruixuian Zhang, Masaharu Takemura, Kazuyoshi Murata, Hiroyuki Ogata
    • Journal Title

      Arch. Virol.

      Volume: 168 Issue: 3 Pages: 80-80

    • DOI

      10.1007/s00705-022-05633-1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genome sequence of new Candidatus Phylum Dependentiae isolate from Chiba, Japan.2022

    • Author(s)
      Masaharu Takemura.
    • Journal Title

      Microbiology Resource Announcements

      Volume: 11 Issue: 2

    • DOI

      10.1128/mra.01123-21

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 2-Dimensional Genetic Algorithm Exhibited an Essentiality of Gene Interaction for Evolution.2022

    • Author(s)
      Motohiro Akashi, Ichiro Fujihara, Masaharu Takemura, Mitsuru Furusawa.
    • Journal Title

      Journal of Theoretical Biology

      Volume: 538 Pages: 111044-111044

    • DOI

      10.1016/j.jtbi.2022.111044

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Morphological and Taxonomic Properties of the Newly Isolated Cotonvirus japonicus, a New Lineage of the Subfamily Megavirinae.2021

    • Author(s)
      Takahashi Haruna、Fukaya Sho、Song Chihong、Murata Kazuyoshi、Takemura Masaharu
    • Journal Title

      Journal of Virology

      Volume: 95 Issue: 18

    • DOI

      10.1128/jvi.00919-21

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sinking of four species of living diatom cells directly observed by a “tumbled” optical microscope.2021

    • Author(s)
      Ryo Hamano, Shingo Shoumura, Yuto Takeda, Tokio Yamazaki, Kota Hirayama, Yasutaka Hanada, Shigeki Mayama, Masaharu Takemura, Han-Jia Lin, and Kazuo Umemura.
    • Journal Title

      Microscopy and Microanalysis

      Volume: 27 Issue: 5 Pages: 1154-1160

    • DOI

      10.1017/s1431927621012150

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Kinetic analysis of Acanthamoeba castellanii infected with giant viruses quantitatively revealed process of morphological and behavioral changes in host cells.2021

    • Author(s)
      Sho Fukaya and Masaharu Takemura.
    • Journal Title

      Microbiology Spectrum

      Volume: 9 Issue: 1

    • DOI

      10.1128/spectrum.00368-21

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] RNA Sequencing of Medusavirus Suggests Remodeling of the Host Nuclear Environment at an Early Infection Stage2021

    • Author(s)
      Zhang Ruixuan、Endo Hisashi、Takemura Masaharu、Ogata Hiroyuki
    • Journal Title

      Microbiology Spectrum

      Volume: 9 Issue: 2

    • DOI

      10.1128/spectrum.00064-21

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Draft Genome Sequence of Medusavirus Stheno, Isolated from the Tatakai River of Uji, Japan.2021

    • Author(s)
      Koki Yoshida, Ruixuan Zhang, Kimberly G. Garcia, Hisashi Endo, Yasuhiro Gotoh, Tetsuya Hayashi, Masaharu Takemura, Hiroyuki Ogata.
    • Journal Title

      Microbiology Resource Announcements

      Volume: 10 Issue: 1

    • DOI

      10.1128/mra.01323-20

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] <i>Marseilleviridae</i> Lineage B Diversity and Bunch Formation Inhibited by Galactose2021

    • Author(s)
      Keita Aoki, Sho Fukaya, Haruna Takahashi, Mio Kobayashi, Kenta Sasaki, Masaharu Takemura.
    • Journal Title

      Microbes and Environments

      Volume: 36 Issue: 1 Pages: n/a

    • DOI

      10.1264/jsme2.ME20139

    • NAID

      130007988403

    • ISSN
      1342-6311, 1347-4405
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Draft genome sequence of Pandoravirus japonicus isolated from the Sabaishi River, Niigata, Japan.2021

    • Author(s)
      Nao Hosokawa, Haruna Takahashi, Keita Aoki, and Masaharu Takemura.
    • Journal Title

      Microbiology Resource Announcements

      Volume: 10 Issue: 19

    • DOI

      10.1128/mra.00365-21

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Medusavirus Ancestor in a Proto-Eukaryotic Cell: Updating the Hypothesis for the Viral Origin of the Nucleus.2020

    • Author(s)
      Masaharu Takemura.
    • Journal Title

      Frontiers in Microbiology

      Volume: 11 Pages: 571831-571831

    • DOI

      10.3389/fmicb.2020.571831

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Medusavirus histone H1の宿主に与える影響と機能の解明2022

    • Author(s)
      山本果奈, 武村政春
    • Organizer
      第69回日本ウイルス学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Phylogenomic Analysis to Define the Taxonomic Classification of Medusaviruses Isolated in Japan2022

    • Author(s)
      Ruixuan Zhang, Masaharu Takemura, Kazuyoshi Murata, Hiroyuki Ogata
    • Organizer
      日本微生物生態学会第35回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミミウイルス感染アメーバにおいて細胞変性効果を誘引する因子の探索2022

    • Author(s)
      和地美来、菊池風花、大場真己、竹前等、武村政春、水谷哲也
    • Organizer
      第165回日本獣医学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Mysterious relationship between moumouvirus and its host amoebae2022

    • Author(s)
      武村政春
    • Organizer
      第5回ExCELLSシンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 巨大ウイルスが有する糖転移酵素様タンパク質の性状解析2022

    • Author(s)
      戸室幸太郎、矢木宏和、関口太一郎、谷中冴子、内橋貴之、武村政春、加藤晃一
    • Organizer
      日本生物物理学会中部支部会
    • Related Report
      2021 Annual Research Report
  • [Presentation] EM観察により解明されたメドゥーサウイルスの粒子成熟過程2021

    • Author(s)
      渡邉凌人, Song Chihong, Kayama Yoko, Takemura Masaharu, Murata Kazuyoshi
    • Organizer
      日本顕微鏡学会第77回学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Shuffling Giants: Genome recombination between giant viruses isolated in Japan.2021

    • Author(s)
      Kimberly G. Garcia, Koki Yoshida, Keita Aoki, Hisashi Endo, Masaharu Takemura, Hiroyuki Ogata.
    • Organizer
      10th Aquatic Virus Workshop
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RNA-seq of medusavirus suggests remodeling of the host nuclear environment at an early infection stage.2021

    • Author(s)
      Ruixuan Zhang, Hisashi Endo, Masaharu Takemura, Hiroyuki Ogata
    • Organizer
      10th Aquatic Virus Workshop
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 巨大ウイルスの一種medusavirusの持つヒストン様タンパク質H2A, H2Bの精製とDNA結合能の解析2021

    • Author(s)
      佐々木健太, 東浦彰史, 武村政春
    • Organizer
      日本微生物生態学会第34回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 巨大ウイルスの一種Medusavius sthenoの持つヒストン様タンパク質H3-H4の精製ならびに動態解析による姉妹株の比較2021

    • Author(s)
      小林実桜, 松村和樹, 増田りさ, 緒方博之, 武村政春
    • Organizer
      日本微生物生態学会第34回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] アカントアメーバ強制発現系を用いたmedusavirusヒストンH1遺伝子の強制発現ならびにH1タンパク質のクローニングと精製2021

    • Author(s)
      山本果奈, 小林実桜, 武村政春
    • Organizer
      日本微生物生態学会第34回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 位相差顕微鏡下での巨大ウイルス感染Acanthamoeba castellaniiの行動解析2021

    • Author(s)
      深谷将, 青木啓太, 小林実桜, 増田りさ, 武村政春
    • Organizer
      日本微生物生態学会第34回大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Medusavirus sthenoの持つヒストン様タンパク質H3-H4の精製ならびに感染細胞の動態解析による姉妹株との比較2021

    • Author(s)
      小林実桜, 松村和樹, 増田りさ, 緒方博之, 武村政春
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Acanthamoeba castellanii medusavirusの持つヒストン様タンパク質H2A, H2Bの精製とDNA結合能の解析2021

    • Author(s)
      佐々木健太, 東浦彰史,武村政春
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 巨大ウイルスはなぜヒストン遺伝子を持っているのか?2021

    • Author(s)
      武村政春
    • Organizer
      第4回ExCELLSシンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Analysis of the genomic features and the infection cycle of Cotonvirus japonicus, a novel giant virus belonging to a new lineage in the family Mimiviridae.2020

    • Author(s)
      Haruna Takahashi, Sho Fukaya, Masaharu Takemura.
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 巨大ウイルスがアメーバを”食べる”方法と、その進化について.2020

    • Author(s)
      武村政春.
    • Organizer
      日本アミノ酸学会第14回学術大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Book] ウイルスの進化史を考える2022

    • Author(s)
      武村政春
    • Total Pages
      272
    • Publisher
      技術評論社
    • ISBN
      9784297127732
    • Related Report
      2021 Annual Research Report
  • [Book] ベーシック生物学(増補改訂版)2021

    • Author(s)
      武村政春
    • Total Pages
      214
    • Publisher
      裳華房
    • ISBN
      9784785352431
    • Related Report
      2021 Annual Research Report
  • [Book] ウイルスはささやく2021

    • Author(s)
      武村政春.
    • Total Pages
      284
    • Publisher
      春秋社
    • ISBN
      9784393332368
    • Related Report
      2020 Annual Research Report
  • [Book] 細胞とはなんだろう2020

    • Author(s)
      武村政春.
    • Total Pages
      256
    • Publisher
      講談社
    • ISBN
      9784065215661
    • Related Report
      2020 Annual Research Report
  • [Remarks] 東京理科大学・武村政春研究室ウェブサイト

    • URL

      https://takemura-lab.azurewebsites.net/main/index

    • Related Report
      2022 Annual Research Report
  • [Remarks] 武村研究室ウェブサイト

    • URL

      https://takemura-lab.azurewebsites.net/main/index

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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