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Chromatin accessibility dynamics during early embryogenesis

Research Project

Project/Area Number 16K20975
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Developmental biology
Genome biology
Research InstitutionThe University of Tokyo

Principal Investigator

Nakamura Ryohei  東京大学, 大学院理学系研究科(理学部), 助教 (30756458)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsクロマチン / 脊椎動物 / リプログラミング / 転写因子 / クロマチン3次元構造 / リプログラミンング / オープンクロマチン / 受精卵 / クロマチン構造 / 初期発生 / エピゲノム
Outline of Final Research Achievements

In this study, we investigated the dynamics of chromatin accessibility during medaka early embryogenesis using ATAC-seq. We found that the accessible chromatin emerges genome-wide during this period. Furthermore, we found that chromatin three-dimensional structure greatly changes during the embryogenesis. Importantly, the pattern of accessible and closed chromatin appeared almost simultaneously with A/B compartments.

Academic Significance and Societal Importance of the Research Achievements

脊椎動物の発生の初期段階において、受精卵はリプログラミングを受け、分化多能性を持つ細胞集団(胞胚期)を作る。この過程において、親から受け継いだクロマチンのエピジェネティック修飾パターンは、多能性細胞の転写状態を制御するためのパターンに戻される。DNAメチル化やヒストン修飾については受精直後の動態が明らかにされつつあるが、それを制御すると考えられる転写因子のクロマチンへの結合動態については、初期胚の細胞数の少なさなどの問題から解析されていなかった。本研究によって得られた結果は、リプログラミング過程のクロマチン動態を記載したもので、分化多能性の制御機構の理解につながる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 2017 2016

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

  • [Journal Article] Targeted in vivo epigenome editing of H3K27me32019

    • Author(s)
      Fukushima Hiroto S.、Takeda Hiroyuki、Nakamura Ryohei
    • Journal Title

      Epigenetics & Chromatin

      Volume: 12 Issue: 1

    • DOI

      10.1186/s13072-019-0263-z

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hypomethylated domain-enriched DNA motifs prepattern the accessible nucleosome organization in teleosts2017

    • Author(s)
      Nakamura Ryohei、Uno Ayako、Kumagai Masahiko、Morishita Shinichi、Takeda Hiroyuki
    • Journal Title

      Epigenetics & Chromatin

      Volume: 10 Issue: 1 Pages: 44-44

    • DOI

      10.1186/s13072-017-0152-2

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparative analysis of genome and epigenome in the closely related medaka species identifies conserved sequence preferences for DNA hypomethylated domains2016

    • Author(s)
      Ayako Uno, Ryohei Nakamura, Tatsuya Tsukahara, Wei Qu, Sumio Sugano, Yutaka Suzuki, Shinichi Morishita & Takeda, H.
    • Journal Title

      Zoological Science

      Volume: 33 Issue: 4 Pages: 358-365

    • DOI

      10.2108/zs160030

    • NAID

      210000185148

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Establishment of the three-dimensional genome structure during medaka fish development2019

    • Author(s)
      Ryohei Nakamura
    • Organizer
      Keystone Symposia, 3D Genome: Gene Regulation and Disease
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Establishment of the three-dimensional genome structure in medaka fish embryos2018

    • Author(s)
      Ryohei Nakamura
    • Organizer
      Keystone Symposia Chromatin Architecture and Chromosome Organization
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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