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Mechanisms underlying transdifferentiation of Kupffer's vesicle epithelial cells

Research Project

Project/Area Number 22K20625
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0701:Biology at molecular to cellular levels, and related fields
Research InstitutionKyoto Sangyo University (2023)
The University of Tokyo (2022)

Principal Investigator

Ikeda Takafumi  京都産業大学, タンパク質動態研究所, 研究員 (40962329)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsクッペル胞 / 分化転換 / 上皮間充織転換 / dand5 / ゼブラフィッシュ / メダカ / 形態形成
Outline of Research at the Start

分化が進んだ動物細胞は、一般に他の系譜の細胞に再分化することはない。しかし、例外として主に再生過程においては、一部の細胞が性質を変化させて別の細胞種となることが知られている。こうした分化転換は動物細胞の分化可塑性を解明する上で重要な研究対象であるが、その制御機構はいまだ解き明かされていない。本研究では、申請者が見出したゼブラフィッシュ胚におけるクッペル胞上皮細胞の分化転換現象を題材に、分化転換の誘導因子を同定するとともに、転写制御レベルでの機構を解明することで、細胞の分化可塑性が動物発生において果たす役割を解明する。

Outline of Final Research Achievements

The Kupffer's vesicle cells in teleost embryos lose their epithelial nature and translocate to the surrounding mesodermal tissue as development progresses. In this study, we established a basis for elucidating the mechanism of transdifferentiation of Kupffer's vesicle cells, including improvement of labeling technology for these cells and search for upstream signals of transdifferentiation. In addition to the zebrafish embryos that have been used in my previous study, I have generated a transgenic line for tracking Kupffer's vesicle cells in medaka embryos, and also generated a line that can visualize Kupffer's vesicle cells from an earlier stage in zebrafish embryos.

Academic Significance and Societal Importance of the Research Achievements

分化が進んだ動物細胞は、一般に他の系譜の細胞に再分化することはないが、主として再生過程において、特定の細胞が性質を変化させて別の細胞種となることが知られている。こうした分化転換は動物細胞の分化可塑性を解明する上で重要な研究対象であるが、その制御機構はいまだ解き明かされていない。本研究の学術的意義は、正常発生における分化転換の役割と機構に注目し、複数の生物種においてクッペル胞上皮細胞の分化転換の動態を可視化する技術を確立したことである。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (7 results)

All 2023 2022

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

  • [Journal Article] Three‐dimensional anatomy of the Tully monster casts doubt on its presumed vertebrate affinities2023

    • Author(s)
      Mikami Tomoyuki、Ikeda Takafumi、Muramiya Yusuke、Hirasawa Tatsuya、Iwasaki Wataru
    • Journal Title

      Palaeontology

      Volume: 66 Issue: 2 Pages: 1-14

    • DOI

      10.1111/pala.12646

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Presentation] Extracellular interplay of Nodal and Dand5 proteins during the left-right asymmetric pattern formation in the lateral plate mesoderm2023

    • Author(s)
      Takafumi Ikeda, Toru Kawanishi, Hiroyuki Takeda
    • Organizer
      The 56th Annual Meeting of JSDB
    • Related Report
      2023 Annual Research Report
  • [Presentation] Extracellular interplay of Nodal and Dand5 proteins during the left-right asymmetric pattern formation in the lateral plate mesoderm2023

    • Author(s)
      Takafumi Ikeda, Toru Kawanishi, Hiroyuki Takeda
    • Organizer
      The 4th GfE-JSDB Young Scientist Exchange Meeting
    • Related Report
      2023 Annual Research Report
  • [Presentation] Extracellular behavior of Nodal and Dand5 proteins in zebrafish embryos during left-right asymmetry formation2023

    • Author(s)
      Takafumi Ikeda, Toru Kawanishi, Hiroyuki Takeda
    • Organizer
      Yamada Conference LXXV Origin of left-right asymmetry in animals
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Extracellular regulation of Nodal morphogens in the left-right asymmetry formation of zebrafish embryos2022

    • Author(s)
      Takafumi Ikeda, Toru Kawanishi, Hiroyuki Takeda
    • Organizer
      The Company of Biologists Workshop: The Biology and Physics of Left-Right Patterning
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Extracellular regulation of Nodal and Dand5 proteins in the left-right asymmetry formation of zebrafish embryos2022

    • Author(s)
      Takafumi Ikeda, Toru Kawanishi, Hiroyuki Takeda
    • Organizer
      The 28th Japanese Medaka and Zebrafish Meeting
    • Related Report
      2022 Research-status Report
  • [Presentation] Transdifferentiation of Kupffer’s vesicle-derived cells into mesodermal lineages(クッペル胞由来細胞の中胚葉系譜への分化転換)2022

    • Author(s)
      Takafumi Ikeda, Toru Kawanishi, Hiroyuki Takeda
    • Organizer
      55th Annual Meeting of JSDB
    • Related Report
      2022 Research-status Report

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Published: 2022-09-01   Modified: 2025-01-30  

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