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Molecular and neural mechanism of age-related memory impairment improved by melatonin metabolic product AMK

Research Project

Project/Area Number 19K06759
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44050:Animal physiological chemistry, physiology and behavioral biology-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Matsumoto Yukihisa  東京医科歯科大学, 統合教育機構, 助教 (60451613)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsAMK / メラトニン / 加齢性記憶障害 / 長期記憶 / フタホシコオロギ / 嗅覚学習 / インスリンシグナル / 糖代謝 / コオロギ
Outline of Research at the Start

加齢に伴う記憶能力の低下(加齢性記憶障害)はヒトでも昆虫でも見られる現象である。研究代表者は、フタホシコオロギにおいて、平均寿命を超えた加齢コオロギでは長期記憶の形成に加齢性記憶障害がみられることを報告した。さらに、メラトニンの脳内代謝産物であるAMKがこの加齢性記憶障害を改善することや、AMKが長期記憶の形成を増強できることを発見した。ただしその作用機序は全く分かっていない。そこで本研究は、行動薬理、LCMSによる質量分析、分子生物学的手法を用いて、コオロギの長期記憶の形成過程におけるAMKの分泌制御機構と修飾機構、および加齢性記憶障害の改善におけるAMKの作用機序の解明を目指す。

Outline of Final Research Achievements

In the present study, I investigated the functional mechanisms of AMK, a melatonin metabolite, in long-term memory formation in crickets (Gryllus bimaculatus) by behavioral-pharmacological experiments and primary tissue culture. The results suggest that within the long-term memory formation process, the melatonin/AMK signaling pathway functions downstream of the NMDA pathway and insulin pathway, rather than activation of neurons by glycometabolic regulation. Moreover, the use of LC-MS/MS revealed that the amounts of melatonin-related substances in the brain of aged crickets were significantly less compared to those in young adult crickets. The results obtained by RNA-sequencing indicated that expression levels of various memory-related genes in the brain decreased in aged crickets compared to young adult crickets.

Academic Significance and Societal Importance of the Research Achievements

本研究より、メラトニン/AMKシグナル系がコオロギの長期記憶の形成機構において様々なシグナル伝達経路の下流で働いていることや、加齢に伴い脳内のメラトニン関連物質量が減少することがわかった。これらの知見は、加齢に伴う記憶力低下を改善する薬の開発につながることが期待できる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Spontaneous recovery from overexpectation in an insect2022

    • Author(s)
      Terao Kanta、Matsumoto Yukihisa、Alvarez Beatriz、Mizunami Makoto
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 9827-9827

    • DOI

      10.1038/s41598-022-13800-2

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Learning and memory in the cricket <i>Gryllus bimaculatus</i>2022

    • Author(s)
      Matsumoto Yukihisa
    • Journal Title

      Physiological Entomology

      Volume: 1 Issue: 3 Pages: 1-15

    • DOI

      10.1111/phen.12387

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The melatonin metabolite N1‐acetyl‐5‐methoxykynuramine facilitates long‐term object memory in young and aging mice2021

    • Author(s)
      Iwashita Hikaru、Matsumoto Yukihisa、Maruyama Yusuke、Watanabe Kazuki、Chiba Atsuhiko、Hattori Atsuhiko
    • Journal Title

      Journal of Pineal Research

      Volume: 70 Issue: 1 Pages: 1-11

    • DOI

      10.1111/jpi.12703

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Effects of social isolation in crickets Gryllus bimaculatus2022

    • Author(s)
      Kanta Terao, Yutaka Kosaki, Yusuke Maruyama, Atsuhiko Hattori, Yukihisa Matsumoto
    • Organizer
      日本動物心理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 社会的隔離が連合学習や報酬への応答に与える影響2022

    • Author(s)
      寺尾勘太、神前裕、服部淳彦、松本幸久
    • Organizer
      日本動物学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 単独性動物における社会的隔離の連合学習能への影響2022

    • Author(s)
      寺尾勘太・神前裕・服部淳彦・松本幸久
    • Organizer
      日本動物学会・関東支部大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Parental ages affect the memory formation ability of offspring in crickets2021

    • Author(s)
      Yukihisa Matsumoto
    • Organizer
      日本比較生理生化学会第43回大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Extinction learning in crickets2021

    • Author(s)
      Kanta Terao, Yukihisa Matsumoto, Yutaka Kosaki
    • Organizer
      日本比較生理生化学会第43回大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 予測誤差理論のさらなる検証:コオロギの連合学習におけるoverexpectation現象2020

    • Author(s)
      寺尾勘太・Beatritz LVAREZ・松本幸久・水波誠
    • Organizer
      日本動物学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 過剰予測効果をコオロギの連合学習で検証する2020

    • Author(s)
      寺尾勘太・Beatritz LVAREZ・松本幸久・水波誠
    • Organizer
      日本基礎心理学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Olfactory memory in the crickets2019

    • Author(s)
      Y. Matsumoto
    • Organizer
      The 10th International Congress of Comparative Physiology and Biochemistry Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] 最先端コオロギ学 -世界初!新しい生物学がここにある-2022

    • Author(s)
      野地澄晴、青沼仁志、石丸善康、大内淑代、片岡孝介、酒井正樹、下澤楯夫、富岡憲治、西野浩史、濱田良真、坂東哲哉、松本幸久、水波誠、三戸太郎、宮脇克行、由良敬、渡邉崇人、渡邊崇之
    • Total Pages
      242
    • Publisher
      北隆館
    • ISBN
      9784832610125
    • Related Report
      2022 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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