• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Stability and flexibility of the DNA replication program revealed by single-cell DNA replication sequencing in vivo

Research Project

Project/Area Number 19K06610
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43050:Genome biology-related
Research InstitutionMie University

Principal Investigator

Takebayashi Shin-ichiro  三重大学, 生物資源学研究科, 准教授 (50392022)

Co-Investigator(Kenkyū-buntansha) 平谷 伊智朗  国立研究開発法人理化学研究所, 生命機能科学研究センター, チームリーダー (40583753)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsDNA複製 / 染色体 / シングルセル / 染色体ドメイン / 染色体機能ドメイン
Outline of Research at the Start

最近申請者は、単一細胞レベルでしかもゲノムワイドに複製ドメイン構造を解析できるscRepli-seq法を開発した。この方法を用いることで、「染色体ドメイン構造は生体内の個々の細胞レベルで見たときにどれほど厳密な制御をうけているのか」、「この厳密性(あるいは曖昧さ)が胚体内での細胞の位置情報や遺伝子発現パターンとどのような関係にあるのか」、「単一細胞内での父由来、母由来染色体の挙動の違いはどれほど考慮する必要があるのか」といった問いに対して明確な答えを出す。

Outline of Final Research Achievements

We investigated structural characteristics of mammalian chromosomes at the level of individual cells using a novel technique for analyzing replication timing domains (chromosomal unit defined by DNA replication timing). To our surprise, cell-type-specific replication timing domain organization was remarkably conserved between individual cells and even between homologous chromosomes. A small degree of cell-to-cell variation was also detected in specific genomic regions where replication timing shifts during cell differentiation. Thus, our study uncovered the previously unrecognized dynamic and static properties of chromosomal domains.

Academic Significance and Societal Importance of the Research Achievements

これまでDNA複製制御を単一細胞レベルで、高解像度、広範囲にわたって詳細に解析した例はなく、本研究で得られた成果は今後のDNA複製研究に大きく貢献することは確実である。DNA複製に着目することで、これまでアプローチの難しかった個々の細胞レベルでの染色体構造の安定性や揺らぎの実体を明らかにしたことは、巨大な染色体分子の動態を理解するためのモデリングやシミュレーションにとって非常に有用で、関連学問分野への波及効果が期待できる。

Report

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

    (11 results)

All 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (5 results)

  • [Int'l Joint Research] New College of Florida(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] The Temporal Order of DNA Replication Shaped by Mammalian DNA Methyltransferases2021

    • Author(s)
      Takebayashi Shin-ichiro、Ryba Tyrone、Wimbish Kelsey、Hayakawa Takuya、Sakaue Morito、Kuriya Kenji、Takahashi Saori、Ogata Shin、Hiratani Ichiro、Okumura Katsuzumi、Okano Masaki、Ogata Masato
    • Journal Title

      Cells

      Volume: 10 Issue: 2 Pages: 266-266

    • DOI

      10.3390/cells10020266

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The NSD2/WHSC1/MMSET methyltransferase prevents cellular senescence-associated epigenomic remodeling2020

    • Author(s)
      Hiroshi Tanaka, Tomoka Igata, Kan Etoh, Tomoaki Koga, Shin-ichiro Takebayashi, and Mitsuyoshi Nakao.
    • Journal Title

      Aging Cell

      Volume: - Issue: 7 Pages: 1-12

    • DOI

      10.1111/acel.13173

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mapping replication timing domains genome wide in single mammalian cells with single-cell DNA replication sequencing2020

    • Author(s)
      Miura Hisashi、Takahashi Saori、Shibata Takahiro、Nagao Koji、Obuse Chikashi、Okumura Katsuzumi、Ogata Masato、Hiratani Ichiro、Takebayashi Shin-ichiro
    • Journal Title

      Nature Protocols

      Volume: 15 Issue: 12 Pages: 4058-4100

    • DOI

      10.1038/s41596-020-0378-5

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genome-wide Analysis of DNA Methylaton Identifies Differentially Methylated Loci Associated With Human Intervertebral Disc Degeneration.2019

    • Author(s)
      Ikuno A, Akeda K, Takebayashi S I, Shimaoka M, Okumura K, and Sudo A.
    • Journal Title

      PLoS One

      Volume: 14 Issue: 9 Pages: e0222188-e0222188

    • DOI

      10.1371/journal.pone.0222188

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Single-cell DNA Replication Profiling Identifies Spatiotemporal Developmental Dynamics of Chromosome Organization.2019

    • Author(s)
      Miura H, Takahashi S, Poonperm R, Tanigawa A, Takebayashi S I, and Hiratani I.
    • Journal Title

      Nature Genetics

      Volume: 51 Issue: 9 Pages: 1356-1368

    • DOI

      10.1038/s41588-019-0474-z

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] CRISPR/Cas9 を用いた複製ドメイン形成に関わるシスエレメントの探索2021

    • Author(s)
      鈴木梨乃、奥村克純、竹林慎一郎
    • Organizer
      第14回日本エピジェネティクス研究会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] CRISPR/Cas9 を用いた複製ドメイン形成に関わるシスエレメントの探索2020

    • Author(s)
      鈴木梨乃、奥村克純、竹林慎一郎
    • Organizer
      第 84 回日本生化学会中部支部例会
    • Related Report
      2020 Research-status Report
  • [Presentation] 脂肪細胞分化時に起こるDNA複製制御に関する研究2020

    • Author(s)
      早川琢也,大河内七海,籠谷和弘,竹林慎一郎,奥村克純
    • Organizer
      第 84 回日本生化学会中部支部例会
    • Related Report
      2020 Research-status Report
  • [Presentation] CRISPR/Cas9 を用いた複製ドメイン形成に関わるシスエレメントの探索2020

    • Author(s)
      鈴木梨乃、奥村克純、竹林慎一郎
    • Organizer
      第187回 日本農芸化学会中部支部例会
    • Related Report
      2020 Research-status Report
  • [Presentation] CRISPR/Cas9 を用いた複製ドメイン形成に関わるシスエレメントの探索2020

    • Author(s)
      鈴木梨乃、高橋沙央里、奥村克純、平谷伊知朗、竹林慎一郎
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi