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Function of membrane potential in morphogenesis-Bioelectricity makes bone shape

Research Project

Project/Area Number 16K14736
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Developmental biology
Research InstitutionOsaka University

Principal Investigator

ARAMAKI Toshihiro  大阪大学, 生命機能研究科, 特任研究員(常勤) (30525340)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords形態形成 / 骨形成 / 生体電気シグナル / 電気シグナル / 光遺伝学 / 発生・分化 / 生体電気信号
Outline of Final Research Achievements

There have been numerous researches and findings for embryogenesis. On the other hand, how to decide the body proportions in adult animals has been little understood. It have been generally considered that the shape of the adult vertebrate depends on the form of their skeleton. In this study, we improved transgenic techniques in zebrafish and found that zebrafish fin size and the fin-ray bone length are regulated independently by different types of cells, despite using similar mechanisms mediated by ion channels.

Academic Significance and Societal Importance of the Research Achievements

電気シグナルの実態を担うイオンチャネルは遺伝子の数が非常に多く、従来のように個々の遺伝子に注目した方法では生体内での機能を解析することは難しい。本研究では発現効率を大幅に向上させたトランスジェニック技術を開発し、これを用いて標的細胞で特異的にイオンチャネルの機能を操作することに成功した。また、同技術を用いてチャネルロドプシンを導入し、光照射依存的に骨の形態を変化させることにも成功している。この技術を応用することで形態形成における電気シグナルの時空間的な操作が可能になるだろう。

Report

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

    (2 results)

All 2019

All Presentation (2 results)

  • [Presentation] Bioelectrical signal regulates organ size2019

    • Author(s)
      Toshihiro Aramaki
    • Organizer
      The 52nd annual meeting of the Japanese Society of Developmental Biologists
    • Related Report
      2018 Annual Research Report
  • [Presentation] Zebrafish fin size and fin bone length are independently regulated by bioelectricity2019

    • Author(s)
      Toshihiro Aramaki
    • Organizer
      Society for Developmental Biology 78th Annual Meeting
    • Related Report
      2018 Annual Research Report

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

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