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Analysis of the functional role of pain-associated neurons identified by Fos-TRAP method

Research Project

Project/Area Number 20K09207
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55050:Anesthesiology-related
Research InstitutionJikei University School of Medicine

Principal Investigator

Takahashi Yukari  東京慈恵会医科大学, 医学部, 助教 (20613764)

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: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords扁桃体 / 腕傍核 / 活動依存的分子発現 / 痛みの慢性化 / シナプス可塑性 / 痛みネットワーク / 痛み情動 / 中脳水道周囲灰白質
Outline of Research at the Start

近年開発されたFos-TRAP法(活性化細胞集団標的遺伝子組換え法)を用い、「痛み活性化ニューロン」、「痛み特異的シナプス」の特異的・選択的な刺激・抑制の影響を解析することで、慢性痛の脳内メカニズムをニューロン・シナプス・ネットワークの水準で明らかにする。痛みの慢性化進行における時間限局的な分子発現コントロール、光遺伝学・化学遺伝学的神経活動操作、および、形態学的・電気生理学的解析を組み合せる多面的アプローチにより、痛み活性化ニューロン、および、痛みネットワークの可塑的変化機構の詳細を解明する。

Outline of Final Research Achievements

In this study, we aimed to elucidate the brain mechanisms underlying plastic changes associated with chronic pain, an essential process of persistent pain. We employed an experimental approach called Fos-TRAP (targeted recombination in active populations) method, which allows the selective expression of artificial functional molecules in neurons that were specifically activated under certain conditions. By functionally labeling neurons that were activated during the early painful period among a diverse population of neurons, we analyzed their synaptic connections. In the spino(trigemino)-parabrachio-amygdaloid pathway, a pathway for nociceptive information to the brain, we found stronger functional connections between pain-activated neurons compared to that of non-specific synapses between neurons of the lateral parabrachial nucleus and central amygdala.

Academic Significance and Societal Importance of the Research Achievements

近年開発・実用化されてきた神経活動依存的特異的分子発現法を駆使し、痛みによって活性化するニューロン・シナプス伝達(これらを「痛み活性化ニューロン」、「痛み特異的シナプス」、と呼ぶ)のみを抽出し、解析することで、神経核同士の結合をまとめて解析する従来の手法では見出しえなかった機能特異的シナプス結合の特徴を明らかにしたことは学術的に新規性が高く、意義がある。また、近年提唱された、痛覚変調性疼痛の背景に、本研究で明らかにしたような痛み特異的シナプス伝達の可塑的変化が関与する可能性が示唆され、さらにメカニズム解明を継続することで中枢性の痛みの治療法開発に大きく寄与する知見が得られ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

    (14 results)

All 2023 2022 2021 2020 Other

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Delivery-Dependent Shift in Oxytocin-Responsive Cell Population in the Central Amygdala of the Female Rat2022

    • Author(s)
      Suzuki Jiro、Nagase Masashi、Sato Naoko、Takahashi Yukari、Okamoto Aikou、Kato Fusao
    • Journal Title

      Neuroendocrinology

      Volume: 113 Issue: 1 Pages: 48-63

    • DOI

      10.1159/000525860

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Attenuation of widespread hypersensitivity to noxious mechanical stimuli by inhibition of GABAergic neurons of the right amygdala in a rat model of chronic back pain2022

    • Author(s)
      Tokunaga Ryota、Takahashi Yukari、Touj Sara、Hotta Harumi、Leblond Hugues、Kato Fusao、Piche Mathieu
    • Journal Title

      European Journal of Pain

      Volume: 26 Issue: 4 Pages: 911-928

    • DOI

      10.1002/ejp.1921

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Acetaminophen and pregabalin attenuate central sensitization in rodent models of nociplastic widespread pain2022

    • Author(s)
      Manami Yajima, Mariko Sugimoto, Yae K.Sugimura, Yukari Takahashi, Fusao Kato
    • Journal Title

      Neuropharmacology

      Volume: 210 Pages: 1-14

    • DOI

      10.1016/j.neuropharm.2022.109029

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sustained microglial activation in the area postrema of collagen-induced arthritis mice2021

    • Author(s)
      Matsushita Takayuki、Otani Kazuhiro、Oto Yohsuke、Takahashi Yukari、Kurosaka Daitaro、Kato Fusao
    • Journal Title

      Arthritis Research & Therapy

      Volume: 23 Issue: 1 Pages: 273-273

    • DOI

      10.1186/s13075-021-02657-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Input-dependent synaptic suppression by pregabalin in the central amygdala in male mice with inflammatory pain2021

    • Author(s)
      Yamamoto Sumii、Takahashi Yukari、Kato Fusao
    • Journal Title

      Neurobiology of Pain

      Volume: 10 Pages: 100078-100078

    • DOI

      10.1016/j.ynpai.2021.100078

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Active role of the central amygdala in widespread mechanical sensitization in rats with facial inflammatory pain.2021

    • Author(s)
      Sugimoto M, Takahashi Y, Sugimura YK, Tokunaga R, Yajima M, Kato F.
    • Journal Title

      Pain

      Volume: Publish Ahead of Print Issue: 8 Pages: 1-14

    • DOI

      10.1097/j.pain.0000000000002224

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Upstream regions underlying central amygdala activation in inflammatory pain2023

    • Author(s)
      Takahashi Y, Okuda T, Uchiyama S, Kato F.
    • Organizer
      日本生理学会第100回記念大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] The structures that excite the central amygdala neurons and pain network in orofacial inflammatory pain2022

    • Author(s)
      Okuda T, Uchiyama S, Sato N, Takahashi Y, Kato F.
    • Organizer
      FENS Forum 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 広汎性痛覚過敏を生み出す扁桃体可塑的変化2021

    • Author(s)
      高橋由香里, 矢島愛美, 杉本真理子, 宮沢祐太, 内山瑳和子, 奥田崇雄, 加藤総夫.
    • Organizer
      第43回日本疼痛学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 腕傍核ー扁桃体システムによる内臓感覚情報処理機構2021

    • Author(s)
      高橋由香里
    • Organizer
      第126回日本解剖学会総会・全国学術集会 第98回日本生理学会大会 合同大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 口唇部炎症による慢性痛の成立過程における 扁桃体の関与と意義2020

    • Author(s)
      高橋由香里
    • Organizer
      第25回日本口腔顔面痛学会総会・学術大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 侵害受容情報特異的な腕傍核-扁桃体投射のfunctional synaptomics2020

    • Author(s)
      奥田崇雄,徳永亮太,杉村弥恵,高橋由香里,加藤総夫
    • Organizer
      第250回生理学東京談話会
    • Related Report
      2020 Research-status Report
  • [Book] 決定版 ウイルスベクターによる遺伝子導入実験ガイド : 培養細胞から個体まで、研究を飛躍させる実践テクニックのすべて2020

    • Author(s)
      杉村弥恵,奥田崇雄,高橋由香里,加藤総夫(編集:平井宏和,日置寛之,小林和人)
    • Publisher
      羊土社
    • ISBN
      9784758122474
    • Related Report
      2020 Research-status Report
  • [Remarks] 慈恵医大 総合医科学研究センター 神経科学研究部

    • URL

      http://www.jikei-neuroscience.com/website/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report 2020 Research-status Report

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

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