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

Elucidation of the brain function and the molecular mechanisms of RhoA/Rho-kinase signaling in neural circuits

Research Project

Project/Area Number 19K23774
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0704:Neuroscience, brain sciences, and related fields
Research InstitutionFujita Health University (2020)
Nagoya University (2019)

Principal Investigator

Zhang Xinjian  藤田医科大学, その他部局等, 助教 (10850430)

Project Period (FY) 2019-08-30 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsRho / Rho-kinase / 脳機能 / リン酸化 / ノックアウトマウス / 行動解析 / RhoA/Rho-kinase / 細胞内シグナル伝達 / 脳神経回路
Outline of Research at the Start

細胞内シグナル伝達機構を分子レベルから個体レベルで解明することは、生命現象の理解だけでなく、病因や病態の解明、分子を標的とした創薬にも非常に重要である。研究代表者の属する研究室はRho-kinaseを発見し、過去20年以上にわたりRhoA-“Rho-kinase”シグナルの研究を行っている。研究代表者はRhoA-“Rho-kinase”シグナルが記憶の形成や維持に関与しているとの仮説を立てた。本研究計画では、RhoA-“Rho-kinase”シグナルについて個体内での生理機能と分子メカニズムを明らかにする。

Outline of Final Research Achievements

The purpose of this study was to clarify the physiological function and the molecular mechanism of RhoA- "Rho-kinase" signaling in individuals. By using constitutively-active RhoA mutant, dominant-negative Rho-kinase mutant, or Rho-kinase knockout mice, we demonstrated that RhoA- "Rho-kinase" signaling was involved in reward-related learning and memory in dopamine D1 receptor-expressing medium spiny neurons of the nucleus accumbens. On the other hand, RhoA- "Rho-kinase" signaling was involved in aversive learning and memory in dopamine D2 receptor-expressing medium spiny neurons of the nucleus accumbens.

Academic Significance and Societal Importance of the Research Achievements

本研究では、側坐核のD1R-MSNにおいて、RhoA-“Rho-kinase”シグナルが報酬学習・記憶に関与すること、側坐核のD2R-MSNにおいて、RhoA-“Rho-kinase”シグナルが忌避学習・記憶に関与することを明らかにした。本研究のようなアプローチで細胞内シグナル伝達機構を解明することによって、報酬記憶と関連する薬物依存症や恐怖記憶と関連するPTSDのような精神疾患の新たな治療ターゲットの発見に繋がると考えられる。

Report

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

    (2 results)

All 2020 2019

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

  • [Journal Article] Accumbal D2R-medium spiny neurons regulate aversive behaviors through PKA-Rap1 pathway.2020

    • Author(s)
      Lin, Y-H., Yamahashi, Y., Kuroda, K., Faruk M. O., Zhang, X., Yamada, K., Yamanaka, A., Nagai, T., Kaibuchi, K.
    • Journal Title

      Neurocham. Int.

      Volume: 143 Pages: 104935-104935

    • DOI

      10.1016/j.neuint.2020.104935

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Dopamine and adenosine signaling pathways are analyzed in striatal medium spiny neurons using kinase-associated neural phospho-signaling (KANPHOS) database2019

    • Author(s)
      Xinjian Zhang, Taku Nagai, Keisuke Kuroda, Kozo Kaibuchi
    • Organizer
      SfN 2019 第49回ニューロサイエンス会議
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2019-09-03   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi