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Establishment of artificial control of DNA methylation for stabilization of transgene expression through generations

Research Project

Project/Area Number 19K06460
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42040:Laboratory animal science-related
Research InstitutionOsaka Medical and Pharmaceutical University

Principal Investigator

Yamamoto Yasuhiro  大阪医科薬科大学, 医学部, 講師 (20613558)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsTransgenerational / DNA methylation / DNAメチル化 / 生殖細胞 / transgeneration / 遺伝子サイレンシング / Dnmt / サイレンシング / transgenerational / メチル化
Outline of Research at the Start

本研究では、導入遺伝子のDNAメチル化を人為的に制御することで、サイレンシングを回避する方法の確立を目的とする。申請者は以下2つのアプローチから導入遺伝子プロモーターを低メチル化状態に保ち、導入遺伝子の発現安定化を試みる。1. メチル化修飾酵素を欠損させた変異体を用いて、新規メチル化の導入を妨げる。2. 人為的にDNA脱メチル化を導入し、プロモーターの低メチル化を導く。

Outline of Final Research Achievements

High DNA methylation of the transgene promoter is thought to be the cause of silencing of the transgene expression state over generations. We analyzed the variation in DNA methylation patterns during medaka gametogenesis and early development by immunohistological methods using 5-methylcytosine antibody, which is specific for DNA methylation. Furthermore, we analyzed which gene groups undergo DNA methylation variation based on comprehensive analysis of DNA methylation status using next-generation sequencers. The results showed that DNA methylation decreased during the egg formation process, suggesting that gene silencing occurs when genes introduced from the mother are transmitted to the next generation.

Translated with www.DeepL.com/Translator (free version)

Academic Significance and Societal Importance of the Research Achievements

導入遺伝子の安定した発現維持は基礎研究にも応用研究にも関わる重要な事項であり、世代を越えると導入遺伝子の発現が抑制される“導入遺伝子サイレンシング”は解決すべき大きな問題である。導入遺伝子のサイレンシングはプロモーターの高メチル化に起因すると考えられているが、これら因果関係を直接解析した報告は無いため、サイレンシングを回避する効果的な方法は未だ確立されていない。本研究では、導入遺伝子のDNAメチル化を人為的に制御することで、サイレンシングを回避する方法の確立を目的とした。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2024 2023 2020

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (1 results)

  • [Journal Article] Trpv4-mediated apoptosis of Leydig cells induced by high temperature regulates sperm development and motility in zebrafish2024

    • Author(s)
      Yamamoto Yasuhiro、Hishikawa Daisuke、Ono Fumihito
    • Journal Title

      Communications Biology

      Volume: 7 Issue: 1 Pages: 1-11

    • DOI

      10.1038/s42003-023-05740-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evolutionary differentiation of androgen receptor is responsible for sexual characteristic development in a teleost fish2023

    • Author(s)
      Y. Ogino, S. Ansai, E. Watanabe, M. Yasugi, Y. Katayama, H. Sakamoto, K. Okamoto, K. Okubo, Y. Yamamoto, I. Hara, T. Yamazaki, A. Kato, Y. Kamei, K. Naruse, K. Ohta, H. Ogino, T. Sakamoto, S. Miyagawa, T. Sato, G. Yamada, M. Baker & T. Iguchi
    • Journal Title

      Nature communications

      Volume: 14 Issue: 1 Pages: 1428-1428

    • DOI

      10.1038/s41467-023-37026-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Gastrointestinal Neurons Expressing HCN4 Regulate Retrograde Peristalsis2020

    • Author(s)
      Fujii Kensuke、Nakajo Koichi、Egashira Yoshihiro、Yamamoto Yasuhiro、Kitada Kazuya、Taniguchi Kohei、Kawai Masaru、Tomiyama Hideki、Kawakami Koichi、Uchiyama Kazuhisa、Ono Fumihito
    • Journal Title

      Cell Reports

      Volume: 30 Issue: 9 Pages: 2879-2888

    • DOI

      10.1016/j.celrep.2020.02.024

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synaptic silencing of fast muscle is compensated by rewired innervation of slow muscle2020

    • Author(s)
      Zempo B, Yamamoto, Y., Williams, T., Ono
    • Journal Title

      Science Advances

      Volume: 6 Pages: 1-12

    • Related Report
      2019 Research-status Report
  • [Presentation] ゼブラフィッシュでは高温下においてTrpv4を介して アポトーシスと精子運動性を制御する2023

    • Author(s)
      山本耕裕、菱川大介、小野富三人
    • Organizer
      日本動物学会 第94回大会
    • Related Report
      2023 Annual Research Report

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Published: 2019-04-18   Modified: 2025-01-30  

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