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Mechanisms for forgetting in olfactory learning in C. elegans

Research Project

Project/Area Number 19H03326
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 46010:Neuroscience-general-related
Research InstitutionKyushu University

Principal Investigator

Ishihara Takeshi  九州大学, 理学研究院, 教授 (10249948)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2022: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Keywords学習 / 記憶 / 忘却 / 線虫 / 遺伝学 / ジアシルグリセロール / 可塑性 / 想起 / 行動遺伝学 / イメージング
Outline of Research at the Start

動物は、経験に基づき形成された記憶によって行動を様々に変化させる。この記憶が保持される時間は、環境条件などの忘却過程によっても制御されている。このような能動的な記憶の忘却については、実行経路や調節機構がほとんど分かっていない。本研究では、能動的な忘却とその調節に関わる分子・神経回路メカニズムを、とくにその制御機構や「忘却」と「想起できないこと」の違い等に着目して、明らかにすることを目指している。

Outline of Final Research Achievements

Animals store various pieces of sensory information as memories, but they adapt to rapidly changing environments by actively forgetting some of those memories. We are studying the mechanism of active forgetting using the nematode C. elegans. In this study, we have revealed that forgetting is controlled by functionally changing the neural circuits after learning. Furthermore, we have demonstrated that memories can become unrecallable even if they exist in the nerve cells, through diacylglycerol. We have also revealed that the recall of these memories is regulated through neural circuits. These findings are crucial for unraveling the mechanisms of active forgetting in higher animals.

Academic Significance and Societal Importance of the Research Achievements

本研究は、これまでほとんど明らかになってこなかった動物の能動的な忘却メカニズムに関する新しいメカニズムを解明しました。まず、学習後の神経回路の可塑性が忘却を制御していることが明らかになりました。さらに、ジアシルグリセロールによって記憶の想起が阻害されることも示されました。これらの結果は、高等動物における記憶の忘却メカニズムの理解に寄与し、認知症やPTSDなどの疾患に対する将来的な医薬品の開発につながる可能性があります。また、この研究は、学習と忘却のバランスが適切に保たれることが適応性のある行動に不可欠であることを示唆しており、生物の生存戦略に関する一般的な原則を明らかにする上でも重要です。

Report

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

    (28 results)

All 2022 2021 2020 2019 Other

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (20 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Regulation of Diacylglycerol Content in Olfactory Neurons Determines Forgetting or Retrieval of Olfactory Memory in<i>Caenorhabditis elegans</i>2022

    • Author(s)
      Arai Mary、Kurokawa Itsuki、Arakane Hoshinosuke、Kitazono Tomohiro、Ishihara Takeshi
    • Journal Title

      The Journal of Neuroscience

      Volume: 42 Issue: 43 Pages: 8039-8053

    • DOI

      10.1523/jneurosci.0090-22.2022

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Behavioral Forgetting of Olfactory Learning Is Mediated by Interneuron-Regulated Network Plasticity in <i>Caenorhabditis elegans</i>2022

    • Author(s)
      Teo Jamine Hooi-Min、Kurokawa Itsuki、Onishi Yuuki、Sato Noriko、Kitazono Tomohiro、Tokunaga Terumasa、Fujiwara Manabi、Ishihara Takeshi
    • Journal Title

      eneuro

      Volume: 9 Issue: 4 Pages: 0084-0084

    • DOI

      10.1523/eneuro.0084-22.2022

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3DeeCellTracker, a deep learning-based pipeline for segmenting and tracking cells in 3D time lapse images2021

    • Author(s)
      Wen Chentao、Miura Takuya、Voleti Venkatakaushik、Yamaguchi Kazushi、Tsutsumi Motosuke、Yamamoto Kei、Otomo Kohei、Fujie Yukako、Teramoto Takayuki、Ishihara Takeshi、Aoki Kazuhiro、Nemoto Tomomi、Hillman Elizabeth MC、Kimura Koutarou D
    • Journal Title

      eLife

      Volume: 10

    • DOI

      10.7554/elife.59187

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] EGL‐4/PKG regulates the role of an interneuron in a chemotaxis circuit of C. elegans through mediating integration of sensory signals2021

    • Author(s)
      Hino Takahiro、Hirai Shota、Ishihara Takeshi、Fujiwara Manabi
    • Journal Title

      Genes to Cells

      Volume: 26 Issue: 6 Pages: 411-425

    • DOI

      10.1111/gtc.12849

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Green fluorescent protein-based lactate and pyruvate indicators suitable for biochemical assays and live cell imaging.2020

    • Author(s)
      Harada K*, Chihara T*, Hayasaka Y*, Mita M, Takizawa M, Ishida K, Arai M, Tsuno S, Matsumoto M, Ishihara T, Ueda H, Kitaguchi T, Tsuboi T. *Equal contribution
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 1-11

    • DOI

      10.1038/s41598-020-76440-4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neuron ID dataset facilitates neuronal annotation for whole-brain activity imaging of C. elegans2020

    • Author(s)
      Yu Toyoshima, Stephen Wu, Manami Kanamori, Hirofumi Sato, Moon Sun Jang, Suzu Oe, Yuko Murakami, Takayuki Teramoto, Chanhyun Park, Yuishi Iwasaki, Takeshi Ishihara, Ryo Yoshida & Yuichi Iino
    • Journal Title

      BMC Biology

      Volume: 18 Issue: 1 Pages: 30-30

    • DOI

      10.1186/s12915-020-0745-2

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Neuropeptide NLP-47 and its receptor GNRR-1 promote forgetting of olfactory memory in C. elegans2022

    • Author(s)
      Yuuki Onishi Jamine Teo, Takeshi Ishihara
    • Organizer
      CeNeuro2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analyses of neuropeptides and receptors required for forgetting2022

    • Author(s)
      Yuuki Onishi, Takeshi Ishihara
    • Organizer
      記憶研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Regulation of diacylglycerol content in olfactory neurons determines forgetting or retrieval of olfactory memory in Caenorhabditis elegans2022

    • Author(s)
      Mary Arai, Takeshi Ishihara
    • Organizer
      記憶研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 神経ペプチドNLP-47とその受容体GNRR-1は、線虫C. elegansの嗅覚学習の忘却を促進する2022

    • Author(s)
      大西 湧己 ジャミン テオ 石原 健
    • Organizer
      日本神経科学学会大会(Neuro2022)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Diacylglycerol content controls proper memory utilization through switching between forgetting and retrieving2021

    • Author(s)
      Arai, M., Ishihara, T.
    • Organizer
      International worm meeting 2021
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The regulation of olfactory circuit by EGL-4/PKG2021

    • Author(s)
      Hino, T., Hirai, S., Ishihara, T. Fujiwara, M.
    • Organizer
      International worm meeting 2021
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of Neuropeptides accelerating forgetting in C. elegans with a reverse genetic apporach2021

    • Author(s)
      Onishi, Y. Teo, J., Kitazono, T., Ishihara, T.
    • Organizer
      International worm meeting 2021
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 線虫の嗅覚記憶の忘却におけるAIA介在神経の関与2021

    • Author(s)
      Teo, J. Ishihara, T.
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 神経ペプチドNLP-47は線虫のC. elegansの嗅覚学習の忘却を促進する2021

    • Author(s)
      大西湧己、Teo, J.,石原 健
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 線虫の脳における複数の情報処理の実行機構2021

    • Author(s)
      藤原学 平井祥太 石原健
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Presentation] 線虫 C. elegans を用いて高精度な神経回路解析を行うことを目指し た実験系の改良2021

    • Author(s)
      白井洸充 大江紗 村上悠子 豊島有 飯野雄一 他 石原健
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 全脳イメージングを用いた線虫の機能的神経回路の同定に向けて2020

    • Author(s)
      遠藤 雄人,Chentao Wen、三浦 拓也、熊谷 里加子、石原 健、木村 幸太郎
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 3DeeCellTracker: 三次元時系列画像データから細胞活動を追跡・抽出する深層学習を用いたソフトウェア2020

    • Author(s)
      *木村 幸太郎、三浦 拓也、Venkatakaushik Voleti、藤江 由香子、寺本 孝行、石原 健、Elizabeth M.C. Hillman、Chentao Wen
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 線虫C. elegansにおける忘却促進を担うシグナルの解析2019

    • Author(s)
      大西 湧己、Jamine Teo、北園 智弘、石原 健
    • Organizer
      次世代脳プロジェクト2019年度冬のシンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 嗅覚応答にかかわる機能的神経回路の可塑性はいかにして行動を制御するのか2019

    • Author(s)
      一ノ瀬 元成、村上 悠子、豊島 有、大江 紗、Stephen Wu、金森 真奈実、寺本 孝行、Moon-Sun Jang、佐藤 博文、吉田 亮、飯野 雄一、石原 健
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Identification of Signaling Factors Accelerating Memory Erasing in C. elegans2019

    • Author(s)
      Yuuki Onishi, Jamine H. Teo, Tomohiro Kitazono, Takeshi Ishihara
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Genetic Analyses of Neuropeptides Regulating Forgetting of Olfactory Adaptation in C. elegans.2019

    • Author(s)
      Y. Onishi, J. Teo, T. Kitazono, T. Ishihara
    • Organizer
      22nd International C.elegans Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cellular analysis in forgetting of an olfactory memory in Caenorhabditis elegans.2019

    • Author(s)
      J.Hooi Min. Teo, Tomohiro Kitazono, Takeshi Ishihara
    • Organizer
      22nd International C.elegans Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Serotonin and DAG signals regulate active forgetting of olfactory adaptation.2019

    • Author(s)
      M. Arai, A. Inoue, T. Ishihara
    • Organizer
      22nd International C.elegans Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gonadal maturation changes chemotaxis to a food-associated odorant through a guanylyl cyclase GCY-28.2019

    • Author(s)
      M. Fujiwara, H. Wada, T. Ishihara
    • Organizer
      22nd International C.elegans Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 分子遺伝学研究室へようこそ

    • URL

      http://www.biology.kyushu-u.ac.jp/~bunsiide/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] 九州大学 分子遺伝学研究室のホームページへようこそ

    • URL

      http://www.biology.kyushu-u.ac.jp/~bunsiide/

    • Related Report
      2019 Annual Research Report

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

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