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Disease predisposition in offspring based on sperm epigenetic variation.

Research Project

Project/Area Number 19K18627
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionKyoto University (2020-2021)
Tohoku University (2019)

Principal Investigator

Kimura Ryuichi  京都大学, 医学研究科, 特定助教 (00781759)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords経世代エピゲノム / DNAメチル化 / 精子形成 / 精子低メチル化 / 脱メチル化薬剤 / 精子 / ヒストン修飾 / 精子エピゲノム / 発達障害
Outline of Research at the Start

近年、精子のエピゲノムが子孫の疾患素因に寄与する因子として着目されている。父親の 加齢は子どもの神経発達障害や統合失調症などの疾患発症リスクとなることが知られ、加齢による精子エピゲノム変化がその背景にある可能性が指摘されている。本研究では、精子のエピゲノム多様性を評価することを通じて父親の加齢が子孫の疾患素因となる生物学的機構を明らかにすることを目的とする。

Outline of Final Research Achievements

In this study, we attempted to mimic age-related sperm DNA hypomethylation by using DNA demethylating agents to verify that changes in sperm DNA methylation status affect the phenotype of offspring. To this end, we administered DNA demethylating agents to male mice and analyzed the phenotypes of pups obtained by mating with female mice, which revealed that the DNA demethylating agents partially mimicked the effect of male aging on phenotypes of the offspring. On the other hand, the patterns of sperm DNA methylation were not very similar, suggesting that the establishment of hypomethylation of sperm DNA by aging and the induction of DNA demethylation by DNA demethylating agents may occur through different mechanisms.

Academic Significance and Societal Importance of the Research Achievements

本研究により、精子のエピゲノム状態を変化させると子孫の表現型に影響が生じることが明らかとなった。父親の精子形成過程におけるエピゲノム異常が種々の疾患素因を形成する可能性があり、今後の研究により次世代に影響する疾患の新たな治療法や予防法の開発につながることが期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2021 2020 2019

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

  • [Journal Article] Detection of <scp>REST</scp> expression in the testis using epitope‐tag knock‐in mice generated by genome editing2021

    • Author(s)
      Kimura Ryuichi、U. Inoue Yukiko、Kikkawa Takako、Tatehana Misako、Morimoto Yuki、Inada Hitoshi、Oki Shinya、Inoue Takayoshi、Osumi Noriko
    • Journal Title

      Developmental Dynamics

      Volume: 251 Issue: 3 Pages: 525-535

    • DOI

      10.1002/dvdy.417

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Paternal age affects offspring via an epigenetic mechanism involving REST/NRSF.2021

    • Author(s)
      Yoshizaki Kaichi, Kimura Ryuichi, Kobayashi Hisato, Oki Shinya, Kikkawa Takako, Mai Lingling, Koike Kohei, Mochizumi Kentaro, Inada Hitoshi, Matsui Yasuhisa, Kono Tomohiro, Osumi Noriko
    • Journal Title

      EMBO Reports

      Volume: 22(2) Issue: 2

    • DOI

      10.15252/embr.202051524

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comprehensive histochemical profiles of histone modification in male germline cells during meiosis and spermiogenesis: Comparison of young and aged testes in mice2020

    • Author(s)
      Tatehana M, Kimura R, Mochizuki K, Inada H, Osumi N
    • Journal Title

      PLoS One

      Volume: eCollection 2020 Issue: 4 Pages: e0230930-e0230930

    • DOI

      10.1371/journal.pone.0230930

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Paternal aging affects to phenotypes of offspring through inheritance of hypomethylated DNA elicited in NRSF/REST binding site2019

    • Author(s)
      Kimura R., Yoshizaki K., Kikkawa T., Mai L., Oki S., Mochizuki K., Kobayashi H., Inada H., Matsui Y., Kono T., Osumi N.
    • Organizer
      14th Asia Epigenome Meeting (AEM) / 3rd Taipei Epigenetics and Chromatin Meeting (TECM)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Paternal aging affects to offspring’s behavior and gene expression possibly through inheritance of hypomethylated DNA elicited in NRSF/REST binding site2019

    • Author(s)
      Kimura R., Yoshizaki K., Kikkawa T., Mai L., Oki S., Mochizuki K., Kobayashi H., Inada H., Matsui Y., Kono T., Osumi N.
    • Organizer
      International Symposium on Epigenome 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Book] 遺伝子医学 31号「エピゲノムの経世代影響」2019

    • Author(s)
      木村 龍一, 吉崎 嘉一, 大隅 典子
    • Total Pages
      168
    • Publisher
      株式会社 メディカルドゥ
    • ISBN
      9784909508058
    • Related Report
      2019 Research-status Report
  • [Book] 医学のあゆみ 268巻3号 「自閉スペクトラム症発症リスクとエピジェネティクス」2019

    • Author(s)
      木村 龍一, 稲田 仁, 大隅 典子
    • Total Pages
      70
    • Publisher
      医歯薬出版株式会社
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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