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In vivo analysis of suprachiasmatic nucleus AVP neurons using multiple type sensors

Research Project

Project/Area Number 20K07259
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48020:Physiology-related
Research InstitutionKanazawa University

Principal Investigator

TSUNO Yusuke  金沢大学, 医学系, 助教 (70827154)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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概日リズム / 視交叉上核 / ファイバーフォトメトリー / カルシウム / in vivo / カルシウムシグナル
Outline of Research at the Start

概日リズムは、昼夜の個体の活動を最適化するシステムであり、変調は睡眠障害や精神疾患の原因となる。視交叉上核は全身細胞の時計遺伝子発現と概日リズムを同期させるが、視交叉上核内の同期メカニズムや入出力関係は未だ不明な点が多い。本研究では、視交叉上核AVPニューロンの活動及び入力を長時間記録し、概日リズム制御メカニズムを理解する。蛍光ファイバーフォトメトリー技術を用いて、カルシウムシグナル、時計遺伝子発現、GABA入力、調節性の神経伝達物質入力の日内変動をin vivoで調べる。

Outline of Final Research Achievements

In this study, we established a cell type-specific in vivo fiber photometry method in the suprachiasmatic nucleus and showed that the correlation between animal behavior and AVP-positive neuron calcium rhythm is disrupted in AVP-Vgat knock-out mice, which cannot release GABA specifically in AVP-positive neurons. Next, we established VIP-tTA knock-in mice and crossed them with AVP-positive cell-specific clock protein phosphatase CK1δ knock-out mice and found that circadian rhythm periods extend in all AVP-positive neurons, VIP-positive neurons, and animal locomotor activity. Finally, a two-color fiber photometry method was established to simultaneously measure calcium rhythms of different cell types in the same individual, and preliminary data were obtained.

Academic Significance and Societal Importance of the Research Achievements

本研究成果は、視交叉上核内において従来機能が不明であったAVP陽性神経細胞が、視交叉上核全体の概日リズム周期を決定し、動物行動リズムを制御していることを示唆する。本研究により、視交叉上核による概日リズム制御メカニズムの一部が明らかになった点が意義深い。本研究成果は、時差ぼけや睡眠相後退症候群、季節性うつ病、タイムシフト労働などの概日リズム障害の予防や治療に貢献し、健康寿命の延伸にも資する。研究によって得られた知識と技術は、医療、健康管理、生産性向上など様々な領域での応用に貢献することが期待される。

Report

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

    (11 results)

All 2023 2022 2021 Other

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (7 results) Remarks (1 results)

  • [Journal Article] Vasopressin neurons in the paraventricular hypothalamus promote wakefulness via lateral hypothalamic orexin neurons2022

    • Author(s)
      Islam Md Tarikul、Rumpf Florian、Tsuno Yusuke、Kodani Shota、Sakurai Takeshi、Matsui Ayako、Maejima Takashi、Mieda Michihiro
    • Journal Title

      Current Biology

      Volume: 32 Issue: 18 Pages: 3871-3885

    • DOI

      10.1016/j.cub.2022.07.020

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cell type-specific genetic manipulation and impaired circadian rhythms in ViptTA knock-in mice2022

    • Author(s)
      Peng Y, Tsuno Y, Matsui A, Hiraoka Y, Tanaka K, Horike S, Daikoku T, Mieda M
    • Journal Title

      Front Physiol

      Volume: 13 Pages: 895633-895633

    • DOI

      10.3389/fphys.2022.895633

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] GABA from vasopressin neurons regulates the time at which suprachiasmatic nucleus molecular clocks enable circadian behavior2021

    • Author(s)
      Maejima Takashi、Tsuno Yusuke、Miyazaki Shota、Tsuneoka Yousuke、Hasegawa Emi、Islam Md Tarikul、Enoki Ryosuke、Nakamura Takahiro J.、Mieda Michihiro
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 118 Issue: 6 Pages: 1-18

    • DOI

      10.1073/pnas.2010168118

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Arginine vasopressin neurons of the suprachiasmatic nucleus act as the principal circadian pacemaker cells in vivo.2023

    • Author(s)
      Yusuke Tsuno, Yubo Peng, Shin-ichi Horike, Kanato Yamagata, Mizuki Sugiyama, Takahiro J. Nakamura, Takiko Daikoku, Takashi Maejima, Michihiro Mieda.
    • Organizer
      The 100th Annual Meeting of the Physiological Society of Japan
    • Related Report
      2022 Annual Research Report
  • [Presentation] In vivo recording of the suprachiasmatic nucleus dynamics reveals a dominant role of arginine vasopressin neurons in the circadian pacesetting2023

    • Author(s)
      Yusuke Tsuno, Yubo Peng, Shin-ichi Horike, Kanato Yamagata, Mizuki Sugiyama, Takahiro J. Nakamura, Takiko Daikoku, Takashi Maejima, Michihiro Mieda.
    • Organizer
      The 17th Environmental Physiology Pre-Congress
    • Related Report
      2022 Annual Research Report
  • [Presentation] AVP neurons control the ensemble period of the central circadian clock of the SCN2022

    • Author(s)
      Yusuke Tsuno, Yubo Peng, Takiko Daikoku, Shin-ichi Horike, Kanato Yamagata, Takashi Maejima, Michihiro Mieda.
    • Organizer
      The 45th Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2022 Annual Research Report
  • [Presentation] Histological and behavioral characterization of ViptTA knock-in mice2022

    • Author(s)
      Yubo Peng, Yusuke Tsuno, Ayako Matsui, Yuichi Hiraoka, Kohichi Tanaka, Shin-ichi Horike, Takiko Daikoku, Michihiro Mieda.
    • Organizer
      The 29th Annual Meeting of the Japanese Society for Chronobiology
    • Related Report
      2022 Annual Research Report
  • [Presentation] Circadian behavior and intracellular Ca2+ rhythms of Prok2 neurons in the SCN2022

    • Author(s)
      Kaito Onodera, Yusuke Tsuno, Yuichi Hiraoka, Kohichi Tanaka, Michihiro Mieda.
    • Organizer
      The 29th Annual Meeting of the Japanese Society for Chronobiology
    • Related Report
      2022 Annual Research Report
  • [Presentation] AVP neurons of the SCN act as the principal circadian pacemaker cells in vivo2022

    • Author(s)
      Yusuke Tsuno, Yubo Peng, Takiko Daikoku, Shin-ichi Horike, Kanato Yamagata, Takashi Maejima, Michihiro Mieda.
    • Organizer
      The 99th Annual Meeting of the Physiological Society of Japan
    • Related Report
      2021 Research-status Report
  • [Presentation] Cellular clocks of AVP neurons regulate the cellular circadian period of VIP neurons in the mouse SCN in vivo2021

    • Author(s)
      Yusuke Tsuno, Yubo Peng, Takiko Daikoku, Shin-ichi Horike, Michihiro Mieda.
    • Organizer
      The 28th Annual Meeting of the Japan Society for Chronobiology
    • Related Report
      2021 Research-status Report
  • [Remarks] 体内時計のオン・オフタイマー設定機構の一端を解明

    • URL

      https://www.kanazawa-u.ac.jp/rd/88959

    • Related Report
      2020 Research-status Report

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

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