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In situ epigenetics: a new strategy for studying H3K27me3 in cellular differentiation and development

Research Project

Project/Area Number 20K06449
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42030:Animal life science-related
Research InstitutionJuntendo University (2022-2023)
Waseda University (2020-2021)

Principal Investigator

Arai Daisuke  順天堂大学, 医学部, 助教 (20624951)

Project Period (FY) 2020-04-01 – 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 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsエピジェネティクス / エピゲノム編集 / ヒストン修飾 / 細胞分化 / ノックイン
Outline of Research at the Start

ヒストンH3の27番目のリジンのトリメチル化(H3K27me3)によるエピジェネティック制御は、分化や発生に伴う遺伝子の使い分けの基盤だと考えられている。しかし従来の研究では機能解析のために全ゲノムのH3K27me3を減少・欠失させていたため、個々の遺伝子の制御における役割については証明できていなかった。本研究では「ゲノム上の特定の領域のH3K27me3の機能解析」を軸に、H3K27me3の真の役割を解明するための新たな戦略、in situエピジェネティクスを創出する。これらを用い、細胞分化に伴うNodal遺伝子のH3K27me3による制御機構を解明する。

Outline of Final Research Achievements

In spite of the importance of histone modifications such as H3K27me3 in cellular differentiation and development, the true function of individual modifications scattered throughout the genome has rarely been examined. To address this issue, we developed epigenome editing tools and modified ES cells (PRC2-switch ES cells) to study in situ H3K27me3. In addition, a novel knock-in method, termed BiPoD, was developed. BiPoD allows us to efficient biallelic knock-in in mouse ES cells.

Academic Significance and Societal Importance of the Research Achievements

本研究はエピジェネティクスの重要な未解明問題に対する解決の手がかりを与えるものである。開発したエピゲノム編集ベクターやPRC2スイッチES細胞は分化や発生におけるH3K27me3の意義の解明に貢献することが期待される。また本研究で開発したBiPoDはES細胞のノックイン効率と特異性を劇的に改良する手法で、エピジェネティクスのみならず多様な研究を加速させるポテンシャルを持つ。

Report

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

    (6 results)

All 2023 2022 2021

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

  • [Journal Article] Generation and characterization of a human iPSC line (JUFMDOi007-A) from a patient with Usher syndrome due to mutation in USH2A2023

    • Author(s)
      Ukaji Takao、Takahashi-Shibata Mikako、Arai Daisuke、Tsutsumi Harumi、Tajima Shori、Akamatsu Wado、Matsumoto Fumihiko、Ikeda Katsuhisa、Usami Shin-ichi、Kamiya Kazusaku
    • Journal Title

      Stem Cell Research

      Volume: 69 Pages: 103100-103100

    • DOI

      10.1016/j.scr.2023.103100

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Coronarin D, a metabolite from the wild turmeric, Curcuma aromatica, promotes the differentiation of neural stem cells into astrocytes.2022

    • Author(s)
      Otsuka, S.; Kawamura, M.; Fujino, S.; Nakamura, F.; Arai, D.; Fusetani, N.; Nakao, Y.
    • Journal Title

      J. Agr. Food Chem.

      Volume: 70 Issue: 10 Pages: 3300-3309

    • DOI

      10.1021/acs.jafc.2c00020

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Efficient biallelic knock-in in mouse embryonic stem cells by in vivo-linearization of donor and transient inhibition of DNA polymerase θ/DNA-PK.2021

    • Author(s)
      Arai, D.; Nakao, Y.
    • Journal Title

      Sci. Rep.

      Volume: 11 Issue: 1 Pages: 18132-18132

    • DOI

      10.1038/s41598-021-97579-8

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Improvement of homology-directed repair-mediated knock-in efficiency in mouse embryonic stem cells by using small compounds2021

    • Author(s)
      新井大祐, 中尾洋一
    • Organizer
      2021 International Chemical Congress of Pacific Basin Societies
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] マウスES細胞に対する高効率な両アリルノックイン手法の開発2021

    • Author(s)
      新井大祐, 中尾洋一
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Book] 実験医学2022年2月号『BiPoD:正確かつ高効率な両アレルノックイン新手法』2022

    • Author(s)
      新井大祐
    • Total Pages
      6
    • Publisher
      羊土社
    • ISBN
      9784758125529
    • Related Report
      2021 Research-status Report

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

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