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Troponin function during gastrulation of sea urchin embryos

Research Project

Project/Area Number 19K06736
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44040:Morphology and anatomical structure-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Yaguchi Shunsuke  筑波大学, 生命環境系, 准教授 (00505331)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords原腸陥入 / トロポニン / 細胞形態 / 形態形成 / ウニ
Outline of Research at the Start

これまでの研究で、筋収縮制御因子であるトロポニン複合体の一部が、陥入中の原腸細胞に発現しているという新たな事象を発見していた。そこで、本研究では、原腸陥入中のトロポニンの働きを詳細に調べ、非筋細胞の形態変化を担うアクチン-ミオシンの収縮制御機構に、トロポニンを軸とした全く新しい知見を提供することを目的とする。今回は、トロポニン機能阻害下での原腸細胞形態を定量的に検出するとともに、トロポニン複合体の構成成分を質量分析によって解析することで、細胞形態変化におけるトロポニンの作用機序を明らかにする。

Outline of Final Research Achievements

There is still a lack of information to fully explain the molecular mechanisms by which simple cellular sheets in multicellular animals invaginate to form the gastrula. Therefore, this study aimed to elucidate the role of troponin in non-muscle cells during the process where a single layer of cells in sea urchin embryos invaginates to form the gastrula. It was demonstrated that troponin is expressed in the invaginating gastrula cells, both at the gene and protein levels, and that inhibition of its function prevents gastrulation. Furthermore, results from in vitro assays suggested that troponin may play a role in blocking the interaction between actin and myosin, indicating a novel function for troponin, previously considered solely a muscle component.

Academic Significance and Societal Importance of the Research Achievements

トロポニンはトロポミオシンと並んで、筋肉が弛緩状態にある時に働く主成分であり、アクチンとミオシンの相互作用を阻害する役割を持つ。また、骨格筋と心筋のみでその発現が示されてきたため、筋肉成分とされていた。しかし、今回の研究でトロポニンは筋肉と全く関係のないウニの陥入中の原腸細胞で発現していることが明らかになった。さらに、ヒトにおいても内臓などの骨格筋とは無関係な場所での発現も見られた。加えて、機能抑制するとウニで原腸陥入が起きなくなることから、非筋細胞でも細胞の形を変えることに働いていることが明らかになった。本成果は他の動物においてもトロポニンの発現や機能を再検証してみるべききっかけになる。

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

    (17 results)

All 2023 2022 2021 2020 2019

All Journal Article (11 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 11 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Development and function of nervous systems of sea urchin larvae2023

    • Author(s)
      YAGUCHI Shunsuke、YAGUCHI Junko
    • Journal Title

      Hikaku seiri seikagaku(Comparative Physiology and Biochemistry)

      Volume: 40 Issue: 3 Pages: 137-148

    • DOI

      10.3330/hikakuseiriseika.40.137

    • ISSN
      0916-3786, 1881-9346
    • Year and Date
      2023-12-15
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nonmuscular Troponin‐I is required for gastrulation in sea urchin embryos2023

    • Author(s)
      Kamata Mai、Taniguchi Yuri、Yaguchi Junko、Tanaka Hiroyuki、Yaguchi Shunsuke
    • Journal Title

      Developmental Dynamics

      Volume: in press Issue: 6 Pages: 624-628

    • DOI

      10.1002/dvdy.680

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temnopleurus reevesii as a new sea urchin model in genetics2022

    • Author(s)
      Yaguchi Shunsuke、Yaguchi Junko
    • Journal Title

      Development, Growth & Differentiation

      Volume: 64 Issue: 1 Pages: 59-66

    • DOI

      10.1111/dgd.12768

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] TrBase: A genome and transcriptome database of Temnopleurus reevesii2022

    • Author(s)
      Sonoko Kinjo, Masato Kiyomoto, Haruka Suzuki, Takashi Yamamoto, Kazuho Ikeo, Shunsuke Yaguchi
    • Journal Title

      Development, Growth and Differentiation

      Volume: ー Issue: 4 Pages: 210-218

    • DOI

      10.1111/dgd.12780

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sea urchin larvae utilize light for regulating the pyloric opening2021

    • Author(s)
      Yaguchi Junko、Yaguchi Shunsuke
    • Journal Title

      BMC Biology

      Volume: 19 Issue: 1 Pages: 64-64

    • DOI

      10.1186/s12915-021-00999-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Direct TGF-beta signaling via alk4/5/7 pathway is involved in gut bending in sea urchin embryos2021

    • Author(s)
      Haruka Suzuki, Shunsuke Yaguchi
    • Journal Title

      Developmental Dynamics

      Volume: 251 Issue: 1 Pages: 226-234

    • DOI

      10.1002/dvdy.442

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Establishment of homozygous knock-out sea urchins2020

    • Author(s)
      Yaguchi Shunsuke、Yaguchi Junko、Suzuki Haruka、Kinjo Sonoko、Kiyomoto Masato、Ikeo Kazuho、Yamamoto Takashi
    • Journal Title

      Current Biology

      Volume: 30 Issue: 10 Pages: R427-R429

    • DOI

      10.1016/j.cub.2020.03.057

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Usage of the Sea Urchin Hemicentrotus pulcherrimus Database, HpBase2020

    • Author(s)
      Kinjo Sonoko、Kiyomoto Masato、Yamamoto Takashi、Ikeo Kazuho、Yaguchi Shunsuke
    • Journal Title

      Methods in Molecular Biology

      Volume: 2219 Pages: 267-275

    • DOI

      10.1007/978-1-0716-0974-3_17

    • ISBN
      9781071609736, 9781071609743
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] cis ‐Regulatory analysis for later phase of anterior neuroectoderm‐specific foxQ2 expression in sea urchin embryos2019

    • Author(s)
      Yamazaki Atsuko、Yamamoto Akane、Yaguchi Junko、Yaguchi Shunsuke
    • Journal Title

      genesis

      Volume: 57 Issue: 6

    • DOI

      10.1002/dvg.23302

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Whole mount in situ hybridization techniques for analysis of the spatial distribution of mRNAs in sea urchin embryos and early larvae2019

    • Author(s)
      Erkenbrack Eric M.、Croce Jenifer C.、Miranda Esther、Gautam Sujan、Martinez-Bartolome Marina、Yaguchi Shunsuke、Range Ryan C.
    • Journal Title

      Methods in Cell Biology

      Volume: 151 Pages: 177-196

    • DOI

      10.1016/bs.mcb.2019.01.003

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Analysis of neural activity with fluorescent protein biosensors2019

    • Author(s)
      Burke Robert D.、Yaguchi Shunsuke
    • Journal Title

      Methods in Cell Biology

      Volume: 151 Pages: 519-526

    • DOI

      10.1016/bs.mcb.2018.10.010

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] ウニ胚原腸陥入におけるトロポニンIの機能解析2021

    • Author(s)
      鎌田真衣; 谷口友梨; 谷口 俊介
    • Organizer
      第92回日本動物学会
    • Related Report
      2021 Research-status Report
  • [Presentation] ウニ幼生の光による幽門の開口2021

    • Author(s)
      谷口順子; 谷口 俊介
    • Organizer
      第92回日本動物学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Wnt signals regulate the anterior-posterior patterning of sea urchin embryos.2021

    • Author(s)
      Yaguchi S.
    • Organizer
      Wnt研究会2021
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Initial analysis for understanding molecular mechanisms of regulative development.2020

    • Author(s)
      Suzuki H, Yaguchi S.
    • Organizer
      53rd Annual meeting of the Japanese Society of Developmental Biologists
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Exploring the left-right determinant in sea urchin embryos.2019

    • Author(s)
      鈴木智佳、谷口俊介
    • Organizer
      日本動物学会第90回大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Evolution of nitric oxide regulation of gut in deuterostomes.2019

    • Author(s)
      谷口順子、谷口俊介
    • Organizer
      日本発生生物学会第52回大会
    • Related Report
      2019 Research-status Report

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

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