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Neural circuits for switching innate defensive behaviors

Research Project

Project/Area Number 20K15925
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 46030:Function of nervous system-related
Research InstitutionThe University of Tokyo

Principal Investigator

MORIKAWA Shota  東京大学, 大学院薬学系研究科(薬学部), 特任研究員 (00855207)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords先天的行動 / カルシウムイメージング / ウイルストレーシング / 扁桃体 / 防御行動 / 不安様行動 / 扁桃体梨状皮質遷移野 / ユニット記録 / 情動 / In vivo カルシウムイメージング / 先天的 / in vivo Ca2+イメージング / 神経回路 / 天敵臭 / 行動選択
Outline of Research at the Start

狂犬病ウイルスを用いた神経回路トレーシング、特定神経細胞活動の観察・操作などの複数の技術を組み合わせ、動物の生存戦略を担う神経回路の同定を目指す。そして、 外界入力が特定の神経回路の活動を誘導し、個体の行動変化を生み出す機構を理解することを目指す。

Outline of Final Research Achievements

Innate behaviors manifest independently of the animal's learning and experience background, suggesting their dependence on genetically conserved neural circuits. However, the precise underlying mechanism remains unclear. This study used the defensive response of mice to a predator odor as a paradigm for innate behavior, using deep brain calcium imaging and virus tracing to identify the neural circuit for odor-induced defensive behavior. Our results indicate that the amygdalopiriform transition area (AmPir) plays a central role in eliciting flight behavior upon exposure to predator odors. Furthermore, we discovered the involvement of the AmPir in the enhancement of persistent anxiety-like behavior induced by specific odorants, including those associated with predators.

Academic Significance and Societal Importance of the Research Achievements

動物は生まれ持って有する先天的な防御行動と、学習や経験によって獲得した後天的な防御行動を適切に選択することで、生存確立を高めてきた。これらは日々の生活を円滑を進めるための適応行動の基礎となるメカニズムの1つであり、本機構の破綻は不安障害を始めとした情動障害に繋がる可能性が高い。本研究を更に推し進めることで、恐怖や不安、ストレスといった情動処理機構の理解を深めることができる可能性がある。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (14 results)

All 2023 2022 2021

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (10 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Hippocampal sharp wave ripples underlie stress susceptibility in male mice2023

    • Author(s)
      Kuga Nahoko、Nakayama Ryota、Morikawa Shota、Yagishita Haruya、Konno Daichi、Shiozaki Hiromi、Honjoya Natsumi、Ikegaya Yuji、Sasaki Takuya
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 2105-2105

    • DOI

      10.1038/s41467-023-37736-x

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mesolimbic dopamine release precedes actively sought aversive stimuli in mice2023

    • Author(s)
      Yawata Yosuke、Shikano Yu、Ogasawara Jun、Makino Kenichi、Kashima Tetsuhiko、Ihara Keiko、Yoshimoto Airi、Morikawa Shota、Yagishita Sho、Tanaka Kenji F.、Ikegaya Yuji
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 2433-2433

    • DOI

      10.1038/s41467-023-38130-3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genetic labeling of axo-axonic cells in the basolateral amygdala2022

    • Author(s)
      Nakashima Miki、Ikegaya Yuji、Morikawa Shota
    • Journal Title

      Neuroscience Research

      Volume: 178 Pages: 33-40

    • DOI

      10.1016/j.neures.2022.02.002

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Inhibition allocates spikes during hippocampal ripples2022

    • Author(s)
      Noguchi Asako、Huszar Roman、Morikawa Shota、Buzsaki Gyeorgy、Ikegaya Yuji
    • Journal Title

      Nature Communications

      Volume: 13 Issue: 1 Pages: 1280-1280

    • DOI

      10.1038/s41467-022-28890-9

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 天敵臭に対する持続的な防御行動を担う神経基盤の解明2022

    • Author(s)
      香取和生、森川勝太、奥山輝大、中嶋藍、竹内春樹、池谷裕二
    • Organizer
      第8回ケモビ研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 先天的防御行動を制御する神経回路の解2022

    • Author(s)
      森川勝太、香取和生、竹内春樹、池谷裕二
    • Organizer
      第8回ケモビ研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Axo-axonic 細胞は恐怖連合学習を制御する2022

    • Author(s)
      中嶋美紀、池谷裕二、森川勝太
    • Organizer
      第96回日本薬理学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 神経ペプチド VIP による学習・記憶の制御機構の解析2022

    • Author(s)
      森川勝太、香取和生、日置寛之、竹内春樹、田村英紀、池谷裕二
    • Organizer
      生体機能と創薬シンポジウム2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 扁桃体Axo-axonic cell特異的標識と情動記憶学習における役割の解明2022

    • Author(s)
      中嶋美紀、池谷裕二、森川勝太
    • Organizer
      東京大学生命科学シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 神経ペプチドVIPによる連合学習の制御機構の解析2022

    • Author(s)
      森川勝太
    • Organizer
      生理学研究所 情動研究会2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Neural circuits for switching innate defensive behaviors2021

    • Author(s)
      森川勝太、香取和生、中嶋藍、竹内春樹、池谷裕二
    • Organizer
      第64回日本神経化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 先天的な防御行動を切替えるための神経回路の解析2021

    • Author(s)
      中嶋美紀、香取和生、中嶋藍、竹内春樹、池谷裕二、森川勝太
    • Organizer
      次世代を担う若手のための創薬・医療薬理シンポジウム2021
    • Related Report
      2021 Research-status Report
  • [Presentation] 先天的な防御行動を切替えるための神経回路の解析2021

    • Author(s)
      中嶋美紀、香取和生、中嶋藍、竹内春樹、池谷裕二、森川勝太
    • Organizer
      生体機能と創薬シンポジウム2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Neural circuits for switching innate defensive behaviors2021

    • Author(s)
      Nakashima Miki, Katori Kazuki, Nakashima Ai, Takeuchi Haruki, Ikegaya Yuji, Morikawa Shota
    • Organizer
      AFMC International Medicinal Chemistry Symposium 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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