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Introduction of chromosome structural changes into mouse spermatogonia cells for the analysis of their transmission to next generation

Research Project

Project/Area Number 20K12179
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 63020:Radiation influence-related
Research InstitutionRadiation Effects Research Foundation

Principal Investigator

NODA Asao  公益財団法人放射線影響研究所, 分子生物科学部, 部長 (40294227)

Co-Investigator(Kenkyū-buntansha) 濱崎 幹也  公益財団法人放射線影響研究所, 分子生物科学部, 研究員 (80443597)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords放射線 / 突然変異 / 生殖細胞変異 / 遺伝子編集 / 染色体構造変異 / CRISPR/Cas9 / 精原細胞 / 放射線被曝 / ゲノム / 精原幹細胞 / 遺伝影響
Outline of Research at the Start

放射線誘発性の突然変異の特徴である染色体構造変異はどれくらいの効率で次世代に伝わるのか?この問題を解明するため、本研究では培養可能なマウス精原幹細胞に人工的に染色体の構造変異を導入する方法を開発する。具体的には遺伝子編集技術を応用してメガbpサイズの欠失や逆位、あるいは染色体間の相互転座を任意の位置に人為的に作成する実験系を完成させる。作成された精原細胞を雄マウス精巣に移植し、精子形成過程及び次世代への継承について検証する。本研究により、放射線の遺伝影響に対する理解を深める。

Outline of Final Research Achievements

We tried to create chromosomal structural mutations in the cultured cells. This is the creation of artificial chromosomal structural mutants by assuming characteristic mutations caused by radiation exposure. We investigate the possibility of inheritance of germ cells bearing these mutations to the next generation. This is an application of the CRISPR/Cas9-based gene-editing system to generate two double-strand breaks at specific sites on the mouse chromosome and create a deletion mutation between them by non-homologous end joining (NHEJ). As a result, we have successfully created extensive artificial deletions ranging from 100 bp to 1 Mbp. We then attempted to create artificial chromosomal translocations.

Academic Significance and Societal Importance of the Research Achievements

放射線被ばくの遺伝的影響は生殖系列細胞に生じる突然変異に起因する。どのようなタイプの突然変異がどれくらいの効率で次世代に伝わるか、これまで明らかになっていない。体細胞とは異なり、生殖系列細胞には減数分裂チェックポイントや受精および初期発生という関門があり、これをくぐり抜けた細胞のみが次世代へと伝わる。生体内のそれぞれの過程で、染色体構造変異を持つ細胞がどのように取り扱われるのか、本研究はその検証システム作成を目指すものであり、生殖細胞被ばくのリスク推定の礎となると期待する。

Report

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

    (14 results)

All 2023 2022 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (7 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] ATM-dependent phosphorylation of CHD7 regulates morphogenesis-coupled DSB stress response in fetal radiation exposure2023

    • Author(s)
      Noda A, Muramoto K, Mishima S.
    • Journal Title

      Molecular Biology of the Cell

      Volume: 34 Issue: 5

    • DOI

      10.1091/mbc.e22-10-0450

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Translocations are induced in hematopoietic stem cells after irradiation of fetal mice.2023

    • Author(s)
      Hamasaki K, Matsumoto T, Cologne J, Mukai M, Kodama Y, Noda A, Nakamura N.
    • Journal Title

      Journal of Radiation Research

      Volume: 64 Issue: 1 Pages: 99-104

    • DOI

      10.1093/jrr/rrac078

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Association of Radiation Exposure with Stable Chromosome Aberrations in Atomic Bomb Survivors Based on DS02R1 Dosimetry and FISH Methods2023

    • Author(s)
      Richard Sposto, Kismet A. Cordova, Kanya Hamasaki, Nori Nakamura, Asao Noda, Yoshiaki Kodama
    • Journal Title

      Radiation Research

      Volume: 199 Issue: 2 Pages: 170-181

    • DOI

      10.1667/rade-22-00154.1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Massive expansion of multiple clones in the mouse hematopoietic system long after whole-body X-irradiation.2022

    • Author(s)
      Yoshida K, Satoh Y, Uchimura A, Misumi M, Kyoizumi S, Taga M, Matsuda Y, Noda A, Kusunoki Y.
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 17276-17276

    • DOI

      10.1038/s41598-022-21621-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] ゲノム変異シグナチャーから放射線分子影響を紐解く:遺伝子改変マウスによるin vivo 突然変異解析2022

    • Author(s)
      野田朝男、中村典
    • Journal Title

      放射線生物研究

      Volume: 57 Pages: 192-201

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] これからの放影研での被爆者ゲノム研究2022

    • Author(s)
      野田朝男
    • Journal Title

      広島医学

      Volume: 75 Pages: 173-177

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ethical, legal, and social implications of human genome studies in radiation research: A workshop report for studies on atomic bomb survivors at Radiation Effects Research Foundation2021

    • Author(s)
      Asao Noda, Kazuto Kato, Chieko Tamura, Leslie G. Biesecker, Misa Imaizumi, Yusuke Inoue, Gail E. Henderson, Benjamin Wilfond, Kaori Muto, Mariko Naito, and Junji Kayukawa
    • Journal Title

      Journal of Radiation Research

      Volume: - Issue: 4 Pages: 656-661

    • DOI

      10.1093/jrr/rrab043

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ATM-dependent phosphorylation of CHD7 regulates morphogenesis-coupled DSB stress response in fetal radiation exposure2023

    • Author(s)
      Asao Noda, Kaori Muramoto, and Shuji Mishima
    • Organizer
      19th Ataxia-Telangiectasia Workshop
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Role of CHD7 in radiation-induced fetal malformations.2022

    • Author(s)
      Noda A, Muramoto K, Mishima S.
    • Organizer
      Joint Meeting of the American Society for Cell Biology 2022 & European Molecular Biology Organization 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Genome-wide analysis of the hereditary effects of radiation.2022

    • Author(s)
      Uchimura A, Satoh Y, Noda A.
    • Organizer
      日本放射線影響学会第65回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Frequencies and characteristics of somatic mutations induced by X-irradiation in mouse hematopoietic stem cells.2022

    • Author(s)
      Matsuda Y, Uchimura A, Satoh Y, Kato N, Toshishige M, Kajimura J, Kubo Y, Yamaoka M, Hamasaki K, Yoshida K, Noda A, Tanabe O.
    • Organizer
      日本放射線影響学会第65回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Future genome studies on atomic bomb survivors and their offspring at RERF2021

    • Author(s)
      野田朝男
    • Organizer
      The 61st Late A-bomb Effects Research Meeting
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 原爆被爆二世における遺伝的影響とがん2020

    • Author(s)
      野田朝男
    • Organizer
      日本癌学会第79回学術総会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 放射線照射マウスでのクローン造血と血液細胞プロファイルの予備研究2020

    • Author(s)
      吉田健吾、多賀正他尊、三角宗近、佐藤康成、内村有邦、野田朝男、楠洋一郎
    • Organizer
      日本放射線影響学会第63回大会
    • Related Report
      2020 Research-status Report

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

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