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Analysis of gene expression rhythms in a population of mobile cells

Research Project

Project/Area Number 20K06653
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44020:Developmental biology-related
Research InstitutionKanazawa University

Principal Investigator

Uriu Koichiro  金沢大学, 生命理工学系, 助教 (90726241)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords体節形成 / 分節時計 / 数理モデル / 同期 / 細胞移動 / 位相振動子 / 数理生物学 / ゼブラフィッシュ
Outline of Research at the Start

形態形成で見られる細胞集団の協調的振る舞いは、細胞間相互作用によって生じる。組織中で細胞は移動し、相互作用する相手を時間とともに変化させる。そのため細胞移動は情報の流れに影響し、組織における特徴的な遺伝子発現パターンを実現しうる。本研究では、脊椎動物体節形成で観察される遺伝子発現リズム(分節時計)の同期現象を解析することで、細胞移動と遺伝子発現動態の関係性を解明する。数理モデルとイメージングデータを組み合わせ、野生型ゼブラフィッシュ胚の同期パターンを組織の前後軸間で比較することによって、「細胞移動は分節時計同期を促進する」という理論予測を実験検証することを目指す。

Outline of Final Research Achievements

We analyzed the effect of cell movement on synchronization of the zebrafish segmentation clock by using both theoretical and experimental approaches. We derived a statistical description of mobile cellular oscillators and revealed that cell mobility effectively strengthens cell-cell coupling and thereby promotes synchronization of gene expression rhythms. Mobility also increases local phase variance of rhythms. This depends on the wavelength of the rhythmic gene expression pattern and we found that proper segments cannot be formed due to large variance if cells move in the anterior tissue where the wavelength of pattern is shorter compared to the posterior part. To validate theory, we imaged a live reporter of the segmentation clock in zebrafish embryos. We found complex phase patterns during resynchronization processes.

Academic Significance and Societal Importance of the Research Achievements

生物の発生では、組織の中を細胞が動き、それにより形作りが起きる。また、細胞は細胞間のコミュニケーションにより遺伝子発現を変化させ、その運命を決める。細胞の動きと遺伝子発現の変化はこれまで別々に研究されてきた。そのため細胞の動きがどのように細胞間のコミュニケーションに影響を及ぼし、遺伝子発現を変化させるかは分かっていない。本研究では理論と実験を組み合わせたアプローチにより、細胞の動きが遺伝子発現リズム(分節時計)に及ぼす影響の解明をおこなった。

Report

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

    (14 results)

All 2023 2022 2021 Other

All Int'l Joint Research (6 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (5 results)

  • [Int'l Joint Research] IBioBA-MPSP(アルゼンチン)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] EPFL(スイス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] IBioBA(アルゼンチン)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Ecole polytechnique federale de Lausanne(スイス)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] IBioBA(アルゼンチン)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Ecole polytechnique federale de Lausanne(スイス)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Ripply suppresses Tbx6 to induce dynamic-to-static conversion in somite segmentation2023

    • Author(s)
      Yabe Taijiro、Uriu Koichiro、Takada Shinji
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 2115-2115

    • DOI

      10.1038/s41467-023-37745-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Orchestration of tissue shape changes and gene expression patterns in development.2023

    • Author(s)
      Uriu K, Morelli LG.
    • Journal Title

      Semin. Cell Dev. Biol.

      Volume: 147 Pages: 24-33

    • DOI

      10.1016/j.semcdb.2022.12.009

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cell size homeostasis under the circadian regulation of cell division in cyanobacteria.2022

    • Author(s)
      Kitaguchi Y, Tei H, Uriu K.
    • Journal Title

      J. Theor. Biol.

      Volume: 553 Pages: 111260-111260

    • DOI

      10.1016/j.jtbi.2022.111260

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] Regularity of gene expression waves under cell mobility gradient in somitogenesis2022

    • Author(s)
      Koichiro Uriu, Luis Morelli
    • Organizer
      第55回日本発生生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Bifurcation for determining somite boundary in zebrafish2022

    • Author(s)
      Koichiro Uriu, Taijiro Yabe, Shinji Takada
    • Organizer
      日本数理生物学会2022年年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Synchronization dynamics of the zebrafish segmentation clock: effect of delayed coupling and period gradient.2021

    • Author(s)
      Koichiro Uriu
    • Organizer
      第54回日本発生生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] Continuum limit of mobile genetic oscillators in vertebrate segment formation2021

    • Author(s)
      Koichiro Uriu
    • Organizer
      第31回日本数理生物学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] From local synchronization by Delta-Notch signaling to global pattern formation2021

    • Author(s)
      Koichiro Uriu
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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