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Significance of synaptic plasticity for memory consolidation during sleep

Research Project

Project/Area Number 20H03552
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 51020:Cognitive and brain science-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Sakaguchi Masanori  筑波大学, 国際統合睡眠医科学研究機構, 准教授 (60407088)

Co-Investigator(Kenkyū-buntansha) 手塚 太郎  筑波大学, システム情報系, 教授 (40423016)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2021: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2020: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords睡眠 / 成体のニューロン新生 / 記憶 / シナプス可塑性 / 光遺伝学 / ニューロン新生 / レム睡眠 / 新生ニューロン
Outline of Research at the Start

睡眠時に脳は自律的に記憶を処理する. その破綻は記憶障害などの病態に関与する. 申請者らは, 成体マウスの海馬で新生するニューロンが, 睡眠中の記憶固定化に必要であることを見出した. その際, 新生ニューロンのシナプス可塑性が重要であることが示唆された. これまで, 睡眠中の記憶固定化におけるシナプス可塑性の意義は解明されていない. そのために, 申請者らの開発した超小型内視鏡と光遺伝学を組み合わせ, 睡眠中にシナプス可塑性の操作し, その記憶固定化への意義を検証する. 本研究により, 記憶固定化におけるシナプス可塑性の意義を明らかにし, その破綻に基づく新しい治療法の開発に貢献する.

Outline of Final Research Achievements

The results of the study revealed the significant role of synchronization between theta oscillations and synaptic plasticity. Particularly, the neural activity corresponding to different phases of theta oscillations in the hippocampus was found to control the directionality of long-term potentiation (LTP) and long-term depression (LTD) at synapses. Furthermore, the interaction between theta oscillations and synaptic plasticity was suggested to have a crucial impact on neural circuit activity and be involved in memory formation and consolidation. These findings provide important insights into the relationship between theta oscillations and synaptic plasticity, enhancing our understanding in this field.

Academic Significance and Societal Importance of the Research Achievements

この研究成果は、シータ振動とシナプス可塑性の関係についての理解を深る。学術的には、脳の学習と記憶のメカニズムに関する重要な知見を提供し、神経科学の分野での理論的な進展に貢献する。さらに、シータ振動位相特異的な新生ニューロンの機能についての発見は、脳の神経回路形成や発達に関する新たな洞察を与える。
社会的には、記憶の疾患や障害の治療や予防に向けた新たなアプローチを提供する。この研究成果を基にした治療法や予防策の開発により、認知症や学習障害などの脳に関連する疾患の改善が期待される。また、教育や学習支援の分野でも応用が期待され、より効果的な学習環境の構築に寄与する。

Report

(2 results)
  • 2022 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • Research Products

    (16 results)

All 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 6 results) Remarks (1 results)

  • [Int'l Joint Research] Nathan Klein Institute/Columbia University(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Edinburgh University(英国)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Fear generalization immediately after contextual fear memory consolidation in mice2021

    • Author(s)
      Yu Jiahui、Naoi Toshie、Sakaguchi Masanori
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 558 Pages: 102-106

    • DOI

      10.1016/j.bbrc.2021.04.072

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Remapping of Adult-Born Neuron Activity during Fear Memory Consolidation in Mice2021

    • Author(s)
      Vergara Pablo、Kumar Deependra、Srinivasan Sakthivel、Koyanagi Iyo、Naoi Toshie、Singh Sima、Sakaguchi Masanori
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 6 Pages: 2874-2874

    • DOI

      10.3390/ijms22062874

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Metabolic fingerprints of fear memory consolidation during sleep2021

    • Author(s)
      Koyanagi I, Sonomura K, Naoi T, Ohnishi T, Kaneko N, Sawamoto K, Sato TA, Sakaguchi M
    • Journal Title

      Molecular Brain

      Volume: 14 Issue: 1 Pages: 30-30

    • DOI

      10.1186/s13041-021-00733-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Calcium imaging of adult-born neurons in freely moving mice2021

    • Author(s)
      Carrier-Ruiz Alvaro、Sugaya Yuki、Kumar Deependra、Vergara Pablo、Koyanagi Iyo、Srinivasan Sakthivel、Naoi Toshie、Kano Masanobu、Sakaguchi Masanori
    • Journal Title

      STAR Protocols

      Volume: 2 Issue: 1 Pages: 100238-100238

    • DOI

      10.1016/j.xpro.2020.100238

    • URL

      https://localhost/en/publications/30556d9d-8fc1-41be-9265-2d403f063047

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanisms Underlying Memory Consolidation by Adult-Born Neurons During Sleep2020

    • Author(s)
      Vergara Pablo、Sakaguchi Masanori
    • Journal Title

      Frontiers in Cellular Neuroscience

      Volume: 14

    • DOI

      10.3389/fncel.2020.594401

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sparse Activity of Hippocampal Adult-Born Neurons during REM Sleep Is Necessary for Memory Consolidation2020

    • Author(s)
      Kumar D, Koyanagi I, Carrier-Ruiz A, Vergara P, Srinivasan S, Sugaya Y, Kasuya M, Yu TS, Vogt K, Muratani M, Ohnishi T, Singh S, Teixeira CM, Cherasse Y, Naoi T, Wang Y, Nondhalee P, Osman BAH, Kaneko N, Sawamoto K, Kernie SG, Sakurai T, McHugh TJ, Kano M, Yanagisawa M, Sakaguchi M
    • Journal Title

      Neuron

      Volume: 107 Issue: 3 Pages: 552

    • DOI

      10.1016/j.neuron.2020.05.008

    • URL

      https://localhost/en/publications/1d845831-3ee8-4cde-ae73-3f4d6bcffcb0

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Progressive Changes in Sleep and Its Relations to Amyloid-β Distribution and Learning in Single App Knock-In Mice2020

    • Author(s)
      Maezono Sakura Eri B.、Kanuka Mika、Tatsuzawa Chika、Morita Miho、Kawano Taizo、Kashiwagi Mitsuaki、Nondhalee Pimpimon、Sakaguchi Masanori、Saito Takashi、Saido Takaomi C.、Hayashi Yu
    • Journal Title

      eneuro

      Volume: 7 Issue: 2 Pages: 1-14

    • DOI

      10.1523/eneuro.0093-20.2020

    • NAID

      120007163363

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] TBA2021

    • Author(s)
      Masanori Sakaguchi
    • Organizer
      The 43rd Japanese Society for Biological Psychiatry, The 51st Japanese Society of Neuropsychopharmacology
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Function of adult-born neurons for memory consolidation during sleep2021

    • Author(s)
      Masanori Sakaguchi
    • Organizer
      The 98th Annual Meeting of the Japanese Society for Physiology
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Mechanisms of traumatic memory processing during sleep2021

    • Author(s)
      Masanori Sakaguchi
    • Organizer
      The 13rd Japanese Society of Anxiety and Related Disorders
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Symposium: Unique coding in the self-replenishing memory circuit: the dentate gyrus2020

    • Author(s)
      Masanori Sakaguchi
    • Organizer
      OIST neuroscience online seminar (ONOS)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Fear memory regulation by adult-born neurons during REM sleep2020

    • Author(s)
      Masanori Sakaguchi
    • Organizer
      The 63rd Annual Meeting of the Japanese Society for Neurochemistry
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Application of the adult-born neurons for PTSD2020

    • Author(s)
      Masanori Sakaguchi
    • Organizer
      The 12th Symposium of Japanese Society for Anxiety and Related Disorders
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Remarks] Sakaguchi Lab HP

    • URL

      https://sakaguchi-lab.org/publications.html

    • Related Report
      2020 Annual Research Report

URL: 

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

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