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The function of dopamine receptors in the striatum during running of mice

Research Project

Project/Area Number 17K17868
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Neurophysiology / General neuroscience
Sports science
Research InstitutionOsaka University

Principal Investigator

NAKAMURA Toru  大阪大学, 生命機能研究科, 招聘研究員 (50771135)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords運動制御 / ドーパミン / ドーパミン受容体 / 線条体 / マウス / コンディショナルノックダウンマウス / 脳内薬物投与 / ステップホイール / コンディショナルノックダウン / 運動 / 大脳基底核 / アセチルコリン / 光遺伝学 / チャネルロドプシン / モチベーション / 報酬 / 神経科学 / 生理学
Outline of Final Research Achievements

In this study, we evaluated the function of dopamine receptors in motor control using a mouse running control system, Step-Wheel. In order to efficiently measure the motor ability in one session, we developed the accelerating step-wheel task, in which the rotational speed of the wheel was increased gradually during a session. We measured the fastest speed mice could run in the task using D1R conditional knockdown (D1R cKD) mice and the mice injected with D1R or D2R blocker. As a result, we found that the speed of the D1R cKD mice and the mice injected with D1R blocker was lower than that of control mice. These results indicate that dopamine-D1R signaling in the striatum is required for locomotive motor ability.

Academic Significance and Societal Importance of the Research Achievements

パーキンソン病にみられる中脳ドーパミン神経細胞の変性脱落と運動失調症状の知見から、中脳-基底核のドーパミン神経回路が身体の運動制御に関与することは知られているが、その詳細な脳内機構については不明点も多い。今回の研究結果から、運動実行中の基底核線条体におけるドーパミン神経回路、特にドーパミン受容体D1Rを介したシグナル回路が歩行運動の制御に関与していることが明らかとなった。今後更に研究が進む事でこの神経回路が運動制御のどこに機能しているのか、より詳細な機構を明らかにすることで運動失調を伴う神経変性疾患の治療に繋がる知見を得ることが期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2019 2018 Other

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

  • [Journal Article] Dopamine D1 and muscarinic acetylcholine receptors in dorsal striatum are required for high speed running2019

    • Author(s)
      Nakamura Toru、Rios Luis Carl、Yagi Takeshi、Sasaoka Toshikuni、Kitsukawa Takashi
    • Journal Title

      Neuroscience Research

      Volume: - Pages: 1-8

    • DOI

      10.1016/j.neures.2019.12.001

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Striatal neurons encode the interval and phase of stepping in the step-wheel task.2019

    • Author(s)
      Takuma Terashita, Toru Nakamura, Yasuo Kubota, Dan Hu, Takeshi Yagi, Ann M. Graybiel, Takashi Kitsukawa.
    • Organizer
      日本神経科学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Rhythmic timing control of mice running in complex stepping patterns.2019

    • Author(s)
      Kohjiro Hirokane, Toru Nakamura, Yasuo Kubota, Dan Hu, Takeshi Yagi, Ann M. Graybiel, Takashi Kitsukawa.
    • Organizer
      日本神経科学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Striatal neurons encode the interval and phase of stepping in the step-wheel task.2019

    • Author(s)
      Takuma Terashita, Toru Nakamura, Yasuo Kubota, Dan Hu, Takeshi Yagi, Ann M. Graybiel, Takashi Kitsukawa
    • Organizer
      日本神経科学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Rhythmic timing control of mice running in complex stepping patterns.2019

    • Author(s)
      Kohjiro Hirokane, Toru Nakamura, Yasuo Kubota, Dan Hu, Takeshi Yagi, Ann M. Graybiel, Takashi Kitsukawa
    • Organizer
      日本神経科学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Dopamine receptor D1R and muscarinic acetylcholine receptor in the dorsal striatum are required for wheel running.2018

    • Author(s)
      Toru Nakamura, Toshikuni Sasaoka, Takeshi Yagi, Takashi Kitsukawa
    • Organizer
      日本神経科学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 線条体におけるドーパミン受容体D1Rとムスカリン受容体は加速式Step-Wheel課題での走運動に必要である2018

    • Author(s)
      中村徹、笹岡俊邦、八木健、木津川尚史
    • Organizer
      日本神経科学会
    • Related Report
      2017 Research-status Report
  • [Remarks] 大阪大学 大学院生命機能研究科 時空生物学講座 心生物学研究室

    • URL

      http://www.fbs.osaka-u.ac.jp/labs/yagi/index.htm

    • Related Report
      2018 Research-status Report
  • [Remarks] 大阪大学大学院 生命機能研究科 時空生物学講座 心生物学研究室ホームページ

    • URL

      http://www.fbs.osaka-u.ac.jp/labs/yagi/index.htm

    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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