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Studies on central command neurons and rat transgenesis

Research Project

Project/Area Number 20K21759
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 59:Sports sciences, physical education, health sciences, and related fields
Research InstitutionTottori University

Principal Investigator

KOBA Satoshi  鳥取大学, 医学部, 准教授 (40565743)

Co-Investigator(Kenkyū-buntansha) 吉村 祐貴  鳥取大学, 医学部, 助教 (50771242)
中村 和臣  鳥取大学, 医学部附属病院, 特命助教 (90598137)
Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
KeywordsFosTRAP / 遺伝子改変ラット / 運動 / 交感神経 / 光遺伝学 / セントラルコマンド / CRISPR-Cas9 / 交感神経活動 / トランスジエニックラット
Outline of Research at the Start

●脳内で生じる運動発現シグナル(セントラルコマンド,CC)の実体解明を目指す.●運動興奮性投射神経がCC機能を担う根源と考えられる.●TRAP法という遺伝子工学的手法を用いれば,興奮性神経のみの機能を追求調査できる.●本研究ではTRAP法を応用できかつCC機能の評価に必要な生体信号を記録できる遺伝子改変ラットを作る.そしてin vivo実験から,運動興奮性神経の機能を解明する.

Outline of Final Research Achievements

In this project, we have successfully generated a novel rat strain that expresses the tamoxifen-dependent recombinase CreER in an activity dependent manner from the endogenous locus of the immediate early gene Fos. With this rat stain, we next established the “FosTRAP” protocol to obtain permanent genetic access to distributed neuronal populations that are activated by 1~2 h voluntary treadmill running exercise. By combining the rat FosTRAP with optogenetics and in vivo physiological experiments, we further investigated the role of treadmill exercise-activated hypothalamic neurons in regulating sympathetic nervous system activities. The FosTRAP technique in rats will contribute to our understandings of brain mechanisms underlying physiological phenomenon in health and disease.

Academic Significance and Societal Importance of the Research Achievements

FosTRAP法はある時間中に活性化した神経細胞限定的に遺伝子工学的介入を可能とする方法であり,様々な生理条件や疾患の中枢メカニズムの機序解明研究に資する技術である.運動時交感神経活性の機序解明を進めている研究代表者は,交感神経活動の実測が可能なラットでのFosTRAP法開発の重要性を確信し,本計画を立案した.本研究において確立したラットFosTRAP法は,運動時交感神経活性メカニズムの解明のみならず,様々な生理学・神経科学研究に応用・活用されることが期待される.

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2021 2020 Other

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Hypothalamic-brain stem circuits generating central command function2021

    • Author(s)
      木場 智史、奈良井 絵美
    • Journal Title

      The Autonomic Nervous System

      Volume: 58 Issue: 1 Pages: 101-104

    • DOI

      10.32272/ans.58.1_101

    • NAID

      130008025105

    • ISSN
      0288-9250, 2434-7035
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sympathoexcitatory input from hypothalamic paraventricular nucleus neurons projecting to rostral ventrolateral medulla is enhanced after myocardial infarction2020

    • Author(s)
      Koba Satoshi、Hanai Eri、Kumada Nao、Watanabe Tatsuo
    • Journal Title

      American Journal of Physiology-Heart and Circulatory Physiology

      Volume: 319 Issue: 6 Pages: H1197-H1207

    • DOI

      10.1152/ajpheart.00273.2020

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 痛みの働き2020

    • Author(s)
      木場智史
    • Journal Title

      体育の科学

      Volume: 70 Pages: 704-708

    • Related Report
      2020 Research-status Report
  • [Presentation] 心不全の交感神経制御の脳内回路と運動2021

    • Author(s)
      木場智史
    • Organizer
      第76回日本体力医学会大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 運動とストレス2021

    • Author(s)
      木場智史
    • Organizer
      第74回日本自律神経学会総会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Sympathomotor activation by midbrain locomotor neurons is mediated through glutamate release in the rostral ventrolateral medulla2020

    • Author(s)
      Satoshi Koba, Nao Kumada, Tatsuo Watanabe
    • Organizer
      Experimental Biology 2020 (covid-19により開催中止、抄録集に抄録掲載)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] ラット視床下部背側領域による歩行・循環反応の生成2020

    • Author(s)
      奈良井絵美,渡邊達生,木場智史
    • Organizer
      第72 回日本生理学会中国四国地方会,ウェブ開催
    • Related Report
      2020 Research-status Report
  • [Presentation] Sympathoexcitation and locomotion by dorsal hypothalamic neurons2020

    • Author(s)
      Emi Narai, Tatsuo Watanabe, Satoshi Koba
    • Organizer
      第126回日本解剖学会総会・全国学術集会、第98回日本生理学会大会の合同大会,ウェブ開催
    • Related Report
      2020 Research-status Report
  • [Remarks] リサーチマップ

    • URL

      https://researchmap.jp/satoshi_koba

    • Related Report
      2021 Annual Research Report

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Published: 2020-08-03   Modified: 2023-01-30  

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