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Identification of host factors that regulate Alu retrotransposition

Research Project

Project/Area Number 21K19219
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 43:Biology at molecular to cellular levels, and related fields
Research InstitutionInstitute of Physical and Chemical Research (2023)
Kyoto University (2021-2022)

Principal Investigator

Miyoshi Tomoichiro  国立研究開発法人理化学研究所, 生命医科学研究センター, チームリーダー (60378841)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsAlu / レトロトランスポゾン / 転移 / LINE-1 / ゲノム / SINE
Outline of Research at the Start

本研究は、Aluとよばれるゲノム上を移動するレトロトランスポゾンの分子機構を明らかにすることを目指し、生化学と遺伝学を融合したアプローチによって、その宿主制御因子を同定しようという試みである。Aluは個体間のゲノムバリエーションを生み出す原動力となる一方で、破滅的な遺伝情報の破壊も引き起こし、場合によっては疾患原因となる遺伝子変異を伴う。この転移を繰り返すAluの分子機構は殆ど分かっておらず、その宿主制御因子を発見することは、我々のゲノムの成り立ちや、発生過程および環境変動によって変化するゲノムの性質を知る上で極めて重要である。

Outline of Final Research Achievements

Human Alu retrotransposon is a non-coding mobile genetic element and can mobilize through the genome using L1 reverse transcriptase; however, the mechanisms and regulators of this genome editing process are poorly understood. To apply the Alu retrotransposition reporter system to a wider range of cell lines for future research and to perform a genetic screening to identify its regulators, we developed a method to visualize Alu retrotransposition using EGFP, a fluorescent protein, and succeeded in measuring Alu retrotransposition by this fluorescent protein with FACS analysis. In addition to the lists already obtained for the L1 ORF2 complex by mass spectrometry, which may include potential Alu regulators, we are now ready to conduct a genetic screening using an Alu-EGFP reporter to search for its regulators.

Academic Significance and Societal Importance of the Research Achievements

Aluは、少なく見積もっても20人に1人の割合で新規の転移を引き起こし、場合によっては疾患原因となる遺伝子変異を伴う。しかし現生人類でも転移を繰り返すAluの転移機構は殆どわかっておらず、その制御因子を同定・解析することは、我々のゲノムの成り立ちや、発生過程および環境変動によって変化するゲノムの性質を知る上で極めて重要である。新たに開発したAlu-EGFPレポーターはソーティング技術への応用のみならず、生体内にも導入することも可能であるため、将来、Aluが引き起こすゲノム不安定化を軽減する手法や、転移を人為的に制御する技術の開発にも貢献できるだろう。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (25 results)

All 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 5 results) Presentation (19 results) (of which Int'l Joint Research: 10 results,  Invited: 4 results)

  • [Int'l Joint Research] University of Michigan(米国)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Human LINE-1 retrotransposons: impacts on the genome and regulation by host factors2023

    • Author(s)
      Luqman-Fatah Ahmad、Miyoshi Tomoichiro
    • Journal Title

      Genes & Genetic Systems

      Volume: 98 Issue: 3 Pages: 121-154

    • DOI

      10.1266/ggs.22-00038

    • ISSN
      1341-7568, 1880-5779
    • Year and Date
      2023-06-01
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The CST complex facilitates cell survival under oxidative genotoxic stress2023

    • Author(s)
      Hara Tomohiko、Nakaoka Hidenori、Miyoshi Tomoichiro、Ishikawa Fuyuki
    • Journal Title

      PLOS ONE

      Volume: 18 Issue: 8 Pages: e0289304-e0289304

    • DOI

      10.1371/journal.pone.0289304

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] <scp>DHX36</scp> maintains genomic integrity by unwinding G‐quadruplexes2023

    • Author(s)
      Mizumoto Ayaka、Yokoyama Yuta、Miyoshi Tomoichiro、Takikawa Masahiro、Ishikawa Fuyuki、Sadaie Mahito
    • Journal Title

      Genes to Cells

      Volume: 28 Issue: 10 Pages: 694-708

    • DOI

      10.1111/gtc.13061

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The interferon stimulated gene-encoded protein HELZ2 inhibits human LINE-1 retrotransposition and LINE-1 RNA-mediated type I interferon induction2023

    • Author(s)
      Luqman-Fatah Ahmad、Watanabe Yuzo、Uno Kazuko、Ishikawa Fuyuki、Moran John V.、Miyoshi Tomoichiro
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 203-203

    • DOI

      10.1038/s41467-022-35757-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The interferon stimulated gene-encoded protein HELZ2 inhibits human LINE-1 retrotransposition and LINE-1 RNA-mediated type I interferon induction2022

    • Author(s)
      Luqman-Fatah Ahmad、Watanabe Yuzo、Ishikawa Fuyuki、Moran John V.、Miyoshi Tomoichiro
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2022.03.26.485892

    • Related Report
      2021 Research-status Report
    • Open Access
  • [Presentation] EGFPレポーターカセットを用いたヒトAluレトロトランスポゾンの新規転移アッセイ系の構築2023

    • Author(s)
      Amano S., Onishi K., Ishikawa F., and Miyoshi T.
    • Organizer
      第46回 日本分子生物学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] インターフェロン誘導遺伝子産物 HERC5 による LINE-1 ヒトレトロトランスポゾンの転移抑制機構2023

    • Author(s)
      西森奎、 Abdul Fatah A.L 、渡邉祐三、石川冬木、三好知一郎
    • Organizer
      第46回 日本分子生物学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] DNA Ligase1によるヒトLINE-1レトロトランスポゾンの転移促進機構2023

    • Author(s)
      大原隆人、 足立真太郎 、渡邉祐三、石川冬木、三好知一郎
    • Organizer
      第46回 日本分子生物学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Nucleotide excision repair factors, XPC and RAD23B, regulate human LINE-1 retrotransposition2023

    • Author(s)
      Sato M., Watanabe Y., Ishikawa F., and Miyoshi T.
    • Organizer
      第46回 日本分子生物学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A network of interferon-stimulated genes inhibits human LINE-1 retrotransposition2023

    • Author(s)
      Miyoshi T.
    • Organizer
      EMBL Symposium: The Mobile Genome: Genetic and Physiological Impacts of Transposable Elements
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The interferon-stimulated gene product HERC5 inhibits human LINE-1 retrotransposition2023

    • Author(s)
      Nishimori K., Abdul Fatah A.L., Watanabe Y., Ishikawa F., and Miyoshi T.
    • Organizer
      EMBL Symposium: The Mobile Genome: Genetic and Physiological Impacts of Transposable Elements
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The interferon-stimulated gene protein HELZ2 inhibits human LINE-1 retrotransposition2023

    • Author(s)
      Luqman-Fatah A., Watanabe Y., Uno K., Moran J.V., Ishikawa F., and Miyoshi T.
    • Organizer
      EMBL Symposium: The Mobile Genome: Genetic and Physiological Impacts of Transposable Elements
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nucleotide excision repair factors, XPC and Rad23b, regulate human LINE-1 retrotransposition2023

    • Author(s)
      Sato M., Watanabe Y., Ishikawa F. and Miyoshi T.
    • Organizer
      The 4th International Symposium of Kyoto Biomolecular Mass Spectrometry Society
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] The interferon stimulated gene product HERC5 inhibits human LINE-1 retrotransposition2023

    • Author(s)
      Nishimori K., Abdul Fatah A.L., Watanabe Y., Ishikawa F., and Miyoshi T.
    • Organizer
      The 19th International Student Seminar in Kyoto University
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] The mechanism of human LINE-1 retrotransposition facilitated by the mitochondrial protein SSBP12023

    • Author(s)
      Sugino K., Tang C-W., Watanabe Y., Abdul Fatah A.L., Makino T., Ishikawa F., Moran J.V. and Miyoshi T.
    • Organizer
      The 19th International Student Seminar in Kyoto University
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Human DNA ligase I facilitates LINE-1 retrotransposition2022

    • Author(s)
      Adachi S., Watanabe Y., Ishikawa F., and Miyoshi T.
    • Organizer
      第45回 日本分子生物学会
    • Related Report
      2022 Research-status Report
  • [Presentation] The interferon stimulated gene product HERC5 inhibits human LINE-1 retrotransposition2022

    • Author(s)
      Nishimori K., Abdul Fatah A.L., Watanabe Y., Ishikawa F., and Miyoshi T.
    • Organizer
      第45回 日本分子生物学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 宿主因子によるヒトLINE-1の制御メカニズム2021

    • Author(s)
      三好 知一郎
    • Organizer
      第5回 転移因子研究会「転移因子と宿主の相互作用による生命機能と進化」
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 宿主因子による転移因子LINE-1の転移制御機構2021

    • Author(s)
      三好 知一郎
    • Organizer
      第93回 日本遺伝学会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Multilayered host mechanisms that control human LINE-1 retroransposition2021

    • Author(s)
      三好 知一郎
    • Organizer
      第44回 日本分子生物学会年会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] The interferon-stimulated gene protein HELZ2 inhibits human LINE-1 retrotransposition2021

    • Author(s)
      Abdul Fatah A.L., Watanabe Y., Ishikawa F., Moran J.V. and Miyoshi T.
    • Organizer
      Genetics Society of AustralAsia 2021 Online Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Molecular interplay between mitochondrial and nuclear single-stranded DNA-binding proteins facilitate human LINE-1 retrotransposition2021

    • Author(s)
      Sugino K., Makino T., Watanabe Y., Ishikawa F., Moran J.V. and Miyoshi T.
    • Organizer
      The Mobile DNA Conference: Evolution, Diversity, and Impact, FASEB Science Research Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Interferon-stimulated genes regulate human LINE-1 retrotransposition2021

    • Author(s)
      Abdul Fatah A.L., Watanabe Y., Ishikawa F., Moran J.V. and Miyoshi T.
    • Organizer
      The Mobile DNA Conference: Evolution, Diversity, and Impact, FASEB Science Research Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] The interferon-stimulated gene protein HELZ2 inhibits human LINE-1 retrotransposition2021

    • Author(s)
      Abdul Fatah A.L., Watanabe Y., Ishikawa F. and Miyoshi T.
    • Organizer
      EMBL Symposium: The Mobile Genome: Genetic and Physiological Impacts of Transposable Elements
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-07-13   Modified: 2025-01-30  

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