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Understanding molecular mechanism behind the oocyte's DNA repair ability of sperm genome damage

Research Project

Project/Area Number 20H03254
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 44010:Cell biology-related
Research InstitutionKyushu University

Principal Investigator

Ohno Mizuki  九州大学, 医学研究院, 助教 (70380524)

Co-Investigator(Kenkyū-buntansha) 日高 京子  北九州市立大学, 基盤教育センター, 教授 (00216681)
手島 康介  九州大学, 理学研究院, 教授 (20447593)
續 輝久  産業医科大学, 産業生態科学研究所, 訪問研究員 (40155429)
中津 可道  九州大学, 医学研究院, 准教授 (00207820)
作見 邦彦  九州大学, 生体防御医学研究所, 准教授 (50211933)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2023: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Keywords卵子DNA修復 / 次世代影響 / 精子DNA損傷 / 突然変異 / ゲノム維持 / 酸化DNA損傷 / DNA修復 / 卵子 / DNA損傷 / 配偶子ゲノム / 生殖細胞ゲノム変異 / 遺伝情報維持 / 生殖細胞ゲノム / ゲノム維持機構 / 継世代影響
Outline of Research at the Start

老化や喫煙、放射線被ばくなどにより精子DNAには様々な「傷」が発生し、不妊や流産の原因となっている。本来健康な卵子には精子が持ち込んだDNA損傷を修復する能力があるが、その分子機構の詳細は明らかになっていない。この研究ではマウスを用いて「精子DNAのどのような傷が、卵子の持つどのような機構で、受精後にどのように修復されるのか」を実験的に明らかにする。本研究の成果は現在の生殖医療での種々の問題、例えば、世界的な少子化問題、医療放射線被ばく、宇宙環境での長期滞在での生殖細胞保護などへの解決策を見出すきっかけになることが見込まれるため学術的にも社会的にも意義が大きい。

Outline of Final Research Achievements

When fertilization occurs with sperm-bearing DNA damage, the biological outcomes may vary depending on the DNA repair capacity of the oocyte. We analyzed the effects of "sperm oxidative DNA damage" and "oocyte DNA repair ability" on offspring by using several DNA repair pathway-defective female mice and wild-type male mice administered oxidants. A decrease in litter size and infertility was observed only when mothers were Ogg1 knockout and mated with oxidant-treated males. OGG1 is an enzyme involved in base excision repair that specifically removes 8-oxoguanine, an oxidized form of guanine. These findings suggest the importance of OGG1 in post-fertilization repair of oxidative DNA damage induced by sperm DNA.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は現在のヒトの生殖医療での種々の課題の他、晩婚化に伴う少子化問題、医療放射線被ばくや宇宙環境での長期滞在での生殖細胞保護など、またヒト以外でも、畜産分野での優良種の維持保存や絶滅危惧種の保全など、各分野での重要な課題の解決策を見出す分子基盤になることが見込まれる。基礎生命科学分野においては、生物多様性を創出する生殖細胞変異の役割と意義を考察するための知見が得られることが期待でき、学術的にも社会的にも意義が大きい。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (40 results)

All 2024 2023 2022 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (36 results) (of which Int'l Joint Research: 10 results,  Invited: 11 results)

  • [Journal Article] Oxidative stress accelerates intestinal tumorigenesis by enhancing 8-oxoguanine-mediated mutagenesis in MUTYH-deficient mice2024

    • Author(s)
      Ohno, M., N. Takano, K. Hidaka, F. Sasaki, K. Yamauchi, Y. Aoki, T. Nohmi, Y. Nakabeppu, Y. Nakatsu, T. Tsuzuki
    • Journal Title

      Genome Research

      Volume: 34 Issue: 1 Pages: 47-56

    • DOI

      10.1101/gr.278326.123

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Endogenous ROS production in early differentiation state suppresses endoderm differentiation via transient FOXC1 expression2022

    • Author(s)
      Oka Sugako、Tsuzuki Teruhisa、Hidaka Masumi、Ohno Mizuki、Nakatsu Yoshimichi、Sekiguchi Mutsuo
    • Journal Title

      Cell Death Discovery

      Volume: 8 Issue: 1 Pages: 150-150

    • DOI

      10.1038/s41420-022-00961-2

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Characteristic mutations induced in the small intestine of Msh2-knockout gpt delta mice2021

    • Author(s)
      Aoki Yasunobu、Ohno Mizuki、Matsumoto Michiyo、Matsumoto Michi、Masumura Kenichi、Nohmi Takehiko、Tsuzuki Teruhisa
    • Journal Title

      Genes and Environment

      Volume: 43 Issue: 1 Pages: 27-27

    • DOI

      10.1186/s41021-021-00196-0

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Oxidative-stress-driven in vivo mutagenesis induced by oral administration of potassium bromate in the small intestines of gpt delta mice2020

    • Author(s)
      Aoki Y, Taniguchi Y, Matsumoto M, Matsumoto M, Ohno M, Masumura K, Sasaki S, Tsuzuki T, Yamamoto M, Nohmi T
    • Journal Title

      Mutation Research

      Volume: 850-851 Pages: 503136-503136

    • DOI

      10.1016/j.mrgentox.2020.503136

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 精子DNA損傷と卵子のDNA修復機構2023

    • Author(s)
      大野みずき
    • Organizer
      日本臨床エンブリオロジスト学会第29回大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Causes and mechanisms of de novo germline mutations2023

    • Author(s)
      Mizuki Ohno
    • Organizer
      Biological Effects & Application of Radiation 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Oxidative Stress-Induced Mutagenesis and Tumorigenesis in MUTYH-Deficient Mice2023

    • Author(s)
      Noriko Takano, Kyoko Hidaka, Fumiko Sasaki, Kazumi Yamauchi, Yasunobu Aoki, Takehiko Nohmi, Yusaku Nakabeppu, Yoshimichi Nakatsu, Teruhisa Tsuzuki, Mizuki Ohno
    • Organizer
      Biological Effects & Application of Radiation 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Toward a new risk assessment system for low-dose/low-dose-rate long exposure to radiation2023

    • Author(s)
      Yoichi Gondo, Arikuni Uchimura, Manabu Yoneya, Satoshi Tanaka, Jun-Ichiro Komura, Minoru Kimura, Mizuki Ohno, Hiroshi Toki, Masako Bando, Yuichi Tsunoyama, Yoshihisa Matsumoto, Hisaji Maki, Yoshiya Shimada
    • Organizer
      Biological Effects & Application of Radiation 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 家族性大腸がんモデルマウスを用いた腫瘍発生数の線量率応答解析2023

    • Author(s)
      藤通 有希 、星 裕子 、大野 みずき 、冨田 雅典
    • Organizer
      放射線影響学会第66回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Effect of Cs-137 internal exposure on mutagenesis and tumorigenesis in mice intestines2023

    • Author(s)
      Mizuki Ohno, Hiroshi Ishihara, Hiroo Nakajima
    • Organizer
      放射線影響学会第66回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] The biological response to internal and external exposure to cesium-137 may be different even at equivalent doses2023

    • Author(s)
      Hiroo Nakajima, Mizuki Ohno, Noriko Takano, Satoru Endo, Hiroshi Ishihara
    • Organizer
      International Commission on Radiological Protection (ICRP)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] De novo germline mutation rate and spectra in DNA repair-deficient mice lines2023

    • Author(s)
      Mizuki Ohno, Noriko Takano, Kyoko Hidaka, Teruhisa Tsuzuki
    • Organizer
      XXIIIrd International Congress of Genetics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analysis of oxidative stress-induced somatic mutations in DNA mismatch repair-deficient mice2023

    • Author(s)
      Noriko Takano, Kyoko Hidaka, Fumiko Sasaki, Yoshimichi Nakatsu, Teruhisa Tsuzuki, Mizuki Ohno
    • Organizer
      XXIIIrd International Congress of Genetics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] rpsL-Tg/Msh2欠損マウスを用いた体細胞突然変異解析:NGS解析との比較2023

    • Author(s)
      鷹野典子、日高京子、青木康展、能美健彦、中津可道、續輝久、大野みずき
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Exploring Cardiac Aging-Associated Mutations Using DNA Repair-Deficient Mice2023

    • Author(s)
      Kyoko HIDAKA, Sugako OKA, Noriko TAKANO, Jong-Kook LEE, Mizuki OHNO
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] マウスを用いた生殖細胞変異の研究2023

    • Author(s)
      大野みずき
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] DNAミスマッチ修復欠損マウスの消化管における体細胞突然変異および酸化ストレス誘発体細胞突然変異の解析2023

    • Author(s)
      鷹野典子,日高京子,佐々木史子,中津可道,續輝久,大野みずき
    • Organizer
      日本遺伝学会第95回
    • Related Report
      2023 Annual Research Report
  • [Presentation] 生殖細胞ゲノム変異の頻度とスペクトルに影響するDNA修復因子2023

    • Author(s)
      大野みずき、鷹野典子、日髙京子
    • Organizer
      日本遺伝学会第95回
    • Related Report
      2023 Annual Research Report
  • [Presentation] Impact of sperm DNA damage and oocyte-DNA repair ability on mouse reproduction2023

    • Author(s)
      佐々木史子、鷹野典子、日高京子、大野みずき
    • Organizer
      日本分子生物学会大46回
    • Related Report
      2023 Annual Research Report
  • [Presentation] Oxidative stress increases Short Tandem Repeat (STR) instability in DNA mismatch repair-deficient mice genome2023

    • Author(s)
      鷹野典子、日高京子、佐々木史子、中津可道、續輝久、大野みずき
    • Organizer
      日本分子生物学会大46回
    • Related Report
      2023 Annual Research Report
  • [Presentation] Establishment of a human iPS cell-derived senescent cardiomyocyte model by regulating endogenous ROS production2023

    • Author(s)
      Sugako Oka, Li Jun, Wang Yuanli, Noriko Takano, Mizuki Ohno, Lee Jong-Kook, Kyoko Hidaka
    • Organizer
      日本分子生物学会大46回
    • Related Report
      2023 Annual Research Report
  • [Presentation] High-precision detection of de novo mutations and application to risk assessment for the low-dose-rate longtime exposure to radiation2023

    • Author(s)
      Yoichi Gondo, Arikuni Uchimura, Manabu Yoneya, Satoshi Tanaka, Jun-Ichiro Komura, Minoru Kimura, Mizuki Ohno, Hiroshi Toki, Masako Bando, Yuichi Tsunoyama, Yoshihisa Matsumoto, Hisaji Maki, Yoshiya Shimada
    • Organizer
      第14回国際ゲノム会議
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A multidisciplinary challenge to assess the next-generation risks of low-dose-rate long-term gamma-ray exposure by whole-genome sequencing in the mouse model2023

    • Author(s)
      Yoichi Gondo, Arikuni Uchimura, Manabu Yoneya, Satoshi Tanaka, Jun-Ichiro Komura, Minoru Kimura, Mizuki Ohno, Hiroshi Toki, Masako Bando, Yuichi Tsunoyama, Yoshihisa Matsumoto, Hisaji Maki, Yoshiya Shimada
    • Organizer
      International Commission on Radiological Protection Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Analysis of De novo Germline Mutations in DNA Repair Deficient Mice Lines2022

    • Author(s)
      Mizuki Ohno
    • Organizer
      13th International Conference on Environmental Mutagens (ICEM2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Effect of Cs-137 internal exposure on mutagenesis and tumorigenesis in mice intestines2022

    • Author(s)
      Mizuki Ohno, Hiroshi Ishihara, Hiroo Nakajima
    • Organizer
      日本放射線影響学会第65回大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Expanded complete outbreeding method for the risk assessment of low-dose-rate long-exposure to gamma-ray in the mouse model2022

    • Author(s)
      Yoichi Gondo, Satoshi Tanaka, Jun-Ichiro Komura, Minoru Kimura, Mizuki Ohno, Yoshihisa Matsumoto, Hisaji Maki
    • Organizer
      日本放射線影響学会第65回大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 137Cs の低線量内部被曝による抗腫瘍性免疫サイトカインの増加2022

    • Author(s)
      中島 裕夫、大野 みずき、石原 弘、宇野 賀津子
    • Organizer
      日本放射線影響学会第65回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 7 Simultaneous sensitive quantification methodology of γH2ax-positive cells and DNA damage-induced RNAs induced by low-dose radiation in white blood cells of mouse2022

    • Author(s)
      田中 泉、石原 弘、中島 裕夫、大野 みずき、田中 美香、 横地 和子、上原 章寛、武田 志乃
    • Organizer
      日本放射線影響学会第65回大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 6 Impact of endogenous oxidative DNA damage on germline mutations: study from repair-deficient mice2022

    • Author(s)
      Mizuki OHNO, Noriko TAKANO, Fumiko SASAKI, Kyoko HIDAKA
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 生殖細胞変異検出のためのパイプライン - 酸化DNA損傷修復欠損マウスを用いて2022

    • Author(s)
      日高京子、鷹野典子、佐々木史子、大野みずき
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Impact of sperm DNA damage and oocyte DNA repair ability on mouse reproduction2022

    • Author(s)
      Fumiko Sasaki, Kyoko Hidaka, Noriko Takano, Mizuki Ohno
    • Organizer
      日本分子生物学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 分化初期の酸化ストレスが細胞運命を変えるメカニズム2022

    • Author(s)
      岡素雅子、續輝久、日高真純、大野みずき、中津可道、関口睦夫
    • Organizer
      日本分子生物学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Analysis of De novo Germline Mutations in DNA Repair Deficient Mice Lines2022

    • Author(s)
      Mizuki Ohno
    • Organizer
      13th International Conference on Environmental Mutagens
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] rpsLトランスジェニックマウスを用いたセシウム137の慢性的内部被ばくによる体細胞突然変異の解析2021

    • Author(s)
      大野 みずき, 鷹野 典子, 中島 裕夫, 石原 弘, 中津 可道, 續 輝久
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] de novo Germline Mutation の頻度とスペクトルに影響する因子2021

    • Author(s)
      大野みずき、鷹野典子、日高京子
    • Organizer
      日本遺伝学会第93回大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] マウスにおけるセシウム137の低線量内部被ばくによる抗腫瘍免疫反応2021

    • Author(s)
      中島 裕夫, 宇野 賀津子, 大野 みずき, 石原 弘, 續 輝久, 米倉 義晴
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 暗期におけるアルキル化剤による小核誘発の増加はミスマッチ修復機構が関与する2021

    • Author(s)
      伊藤 圭一, 益森 勝志, 大野 みずき, 續 輝久, 下位 香代子
    • Organizer
      日本環境変異原ゲノム学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ミスマッチ修復欠損条件下でgpt deltaマウス小腸に誘発される特徴的突然変異2021

    • Author(s)
      青木 康展, 大野 みずき, 松本 みちよ, 松本 理, 増村 健一, 能美 健彦, 續 輝久
    • Organizer
      日本環境異原ゲノム学会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] psLトランスジェニックマウスを用いたセシウム137の慢性的内部被ばくによる体細胞突然変異の解析2021

    • Author(s)
      大野 みずき, 鷹野 典子, 中島 裕夫, 石原 弘, 中津 可道, 續 輝久
    • Organizer
      日本環境異原ゲノム学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 生殖細胞での突然変異率と変異スペクトルに影響する因子は何か?2020

    • Author(s)
      大野みずき
    • Organizer
      日本遺伝学会
    • Related Report
      2020 Annual Research Report
    • Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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