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Development of Optogenetic Tools for Manipulating Dense-Core Vesicle Dynamics

Research Project

Project/Area Number 22K19356
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 46:Neuroscience and related fields
Research InstitutionUniversity of Yamanashi

Principal Investigator

Ohtsuka Toshihisa  山梨大学, 大学院総合研究部, 教授 (40401806)

Project Period (FY) 2022-06-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords光遺伝学 / シナプス / 光ツール / 有芯小胞 / ELKS
Outline of Research at the Start

有芯小胞の放出が制御するセカンドメッセンジャーである細胞内Ca2+、cAMPやジアシルグリセロール(DAG)を操作するオプシンを有芯小胞放出部位に集積させるタグを開発し、有芯小胞放出を光操作する系を確立する。また、有芯小胞の挙動をモニターするため、有芯小胞マーカーchromograminBにpH感受性蛍光タンパク質等を付けたマーカーを開発する。これらのツールを駆使し、有芯小胞の分泌メカニズムの解明を目指す。

Outline of Final Research Achievements

We have newly developed a bacterial photoactivatable adenylate cyclase (bPAC-Syn1a) that localizes to presynapses, and a light-controlled phospholipase Cβ (opto-PLCβ). Using bPAC-Syn1a, we observed light-dependent short-term potentiation in the projection from the parabrachial nucleus to the central amygdala in the mouse brain. With opto-PLCβ expressed in the amygdala, we observed strong long-term potentiation induced by a pairing protocol. This protocol involved pairing excitatory postsynaptic potentials, triggered by presynaptic stimulation of thalamic afferents, with mild post-synaptic depolarization. These findings suggest the potential for manipulating dense-core vesicle dynamics using these optogenetic tools.

Academic Significance and Societal Importance of the Research Achievements

シナプス小胞の放出において、光を用いた操作・介入できる新たな技術・ツールの開発に成功した。本研究の成果によりシナプス可塑性の人為的な介入が可能となり、神経機能における細胞制御および高次機能制御のメカニズムの解明に寄与し、将来的には、学習・記憶障害、神経変性疾患、糖尿病、肥満などの治療法の開発に貢献する可能性がある。また、細胞生物学全般に大きなインパクトを与え、新たな生命科学の分野を開拓する可能性を秘めている。これらの成果は、科学的知識の進歩だけでなく、社会全体の健康と福祉の向上にも寄与すると考えられる。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (16 results)

All 2024 2023 2022 Other

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 8 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Remarks (1 results)

  • [Journal Article] A light-controlled phospholipase C for imaging of lipid dynamics and controlling neural plasticity2024

    • Author(s)
      Kim Yeon-Jeong、Tohyama Suguru、Nagashima Takashi、Nagase Masashi、Hida Yamato、Hamada Shun、Watabe Ayako M.、Ohtsuka Toshihisa
    • Journal Title

      Cell Chemical Biology

      Volume: 31 Issue: 7 Pages: 1-13

    • DOI

      10.1016/j.chembiol.2024.03.001

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] All-optical presynaptic plasticity induction by photoactivated adenylyl cyclase targeted to axon terminals2024

    • Author(s)
      Nagase Masashi、Nagashima Takashi、Hamada Shun、Morishima Mieko、Tohyama Suguru、Arima-Yoshida Fumiko、Hiyoshi Kanae、Hirano Tomoha、Ohtsuka Toshihisa、Watabe Ayako M.
    • Journal Title

      Cell Reports Methods

      Volume: 4 Issue: 4 Pages: 100740-100740

    • DOI

      10.1016/j.crmeth.2024.100740

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Critical Role of the Presynaptic Protein CAST in Maintaining the Photoreceptor Ribbon Synapse Triad2023

    • Author(s)
      Hagiwara Akari、Mizutani Ayako、Kawamura Saki、Abe Manabu、Hida Yamato、Sakimura Kenji、Ohtsuka Toshihisa
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 8 Pages: 7251-7251

    • DOI

      10.3390/ijms24087251

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experience-dependent changes in affective valence of taste in male mice2023

    • Author(s)
      Hamada Shun、Mikami Kaori、Ueda Shuhei、Nagase Masashi、Nagashima Takashi、Yamamoto Mikiyasu、Bito Haruhiko、Takemoto-Kimura Sayaka、Ohtsuka Toshihisa、Watabe Ayako M.
    • Journal Title

      Molecular Brain

      Volume: 16 Issue: 1 Pages: 28-28

    • DOI

      10.1186/s13041-023-01017-x

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A novel technique for large-fragment knock-in animal production without ex vivo handling of zygotes.2023

    • Author(s)
      Abe M, NakatsukasaE, Natsume R, Hamada S, Sakimura K, Watabe AM, Ohtsuka, T.
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 2245-2245

    • DOI

      10.1038/s41598-023-29468-1

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Post-developmental plasticity of the primary rod pathway allows restoration of visually guided behaviors.2022

    • Author(s)
      Cao Y., Fajardo D., Guerrero-Given D., Samuel AM., Ohtsuka T., Boye SE., Kamasawa N., Martemyanov KA.
    • Journal Title

      Current Biology

      Volume: 32 Issue: 22 Pages: 4783-4796

    • DOI

      10.1016/j.cub.2022.09.016

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Ubap1 knock-in mice reproduced the phenotype of SPG802022

    • Author(s)
      Shimozono K, Nan H, Takiyama Y, et al.
    • Journal Title

      Journal of Human Genetics

      Volume: 67 Issue: 12 Pages: 679-686

    • DOI

      10.1038/s10038-022-01073-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Novel SLC9A6 Variation in Female Carriers With Intellectual Disability and Atypical Parkinsonism.2022

    • Author(s)
      Nan, H., Kim, YJ., Tsuchiya, M., Ishida, A., Haro, H., Hiraide, M., Ohtsuka, T., Takiyama, Y.
    • Journal Title

      Neurology Genetics

      Volume: 8 Issue: 1

    • DOI

      10.1212/nxg.0000000000000651

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Optogenetic Control of Basolateral Amygdala Plasticity and Fear Memory Formation via Engineered Phospholipase C2024

    • Author(s)
      Yeon-Jeong Kim, Suguru Tohyama, Takashi Nagashima, Masashi Nagase, Yamato Hida, Shun Hamada, Ayako M. Watabe and Toshihisa Ohtsuka
    • Organizer
      Neuronal Circuits Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optogenetic engineering of light-controlled phospholipase C: metabolic dynamics of phosphoinositide2023

    • Author(s)
      Yeon-Jeong Kim, Shun Hamada, and Toshihisa Ohtsuka
    • Organizer
      ゴードンリサーチカンファレンスMolecular and Cellular Biology of Lipids
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Live cell-imaging of CAST/ELKS-mediated liquid-liquid phase separation regulates protein complexes in presynaptic active zone2023

    • Author(s)
      Kim Yeon-Jeong, Hida Y, Ohtsuka T.
    • Organizer
      第46回日本神経科学大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Depletion of LKB1 at cerebellar synapses causes progressive locomotion dysfunction linked to the reduced neuromuscular transmission.2023

    • Author(s)
      Sota Sawada, Ryo Kozawa, Masataka Yamamoto, Yuhei Mizunoe, Ryo Goitsuka, Toshihisa Ohtsuka, Hiroshi Takemura, and Akari Hagiwara.
    • Organizer
      第46回日本神経科学大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] The future of Japan brain initiatives: BRAIN/MINDS and BRAIN/MINDS Beyond2023

    • Author(s)
      Toshihisa Ohtsuka
    • Organizer
      ヒューマンブレイン プロジェクト(HBP)サミット
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Morphological examination of the role of LKB1 in retinal horizontal cell remodeling using the AAV-based labeling system.2022

    • Author(s)
      Saki Kawamura, Toshihisa Ohtsuka, Yamato Hida, Akari Hagiwara
    • Organizer
      第45回日本神経科学大会
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Depletion of LKB1 in the cerebellar granule cells induces locomotor dysfunction in aged mice.2022

    • Author(s)
      Mayu Kitamura, Akari Hagiwara, Shun Hamada, and Toshihisa Ohtsuka
    • Organizer
      第45回日本神経科学大会
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Remarks] 山梨大学医学部生化学講座第一教室ホームページ

    • URL

      http://www.med.yamanashi.ac.jp/basic/bioche01/

    • Related Report
      2023 Annual Research Report 2022 Research-status Report

URL: 

Published: 2022-07-05   Modified: 2025-01-30  

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