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Biological basis and expanded indications of the rehabilitation-enhancing drug, edonerpic

Research Project

Project/Area Number 20H00549
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 56:Surgery related to the biological and sensory functions and related fields
Research InstitutionYokohama City University

Principal Investigator

TAKAHASHI Takuya  横浜市立大学, 医学研究科, 教授 (20423824)

Co-Investigator(Kenkyū-buntansha) 實木 亨  横浜市立大学, 医学研究科, 客員研究員 (10546675)
阿部 弘基  横浜市立大学, 医学部, 助教 (40737409)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2022: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2021: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2020: ¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Keywordsリハビリテーション / 可塑性 / AMPA受容体 / 脊髄損傷 / edonerpic maleate / エドネルピク / FRAP / CRMP2
Outline of Research at the Start

脳損傷後のリハビリテーションによる機能回復過程は可塑的過程である。可塑的過程の分子細胞メカニズムがAMPA受容体(グルタミン酸受容体)のシナプス移行である。我々は低分子化合物であるエドネルピクがAMPA受容体のシナプス移行促進作用を持ち、脳卒中により失われた運動機能をリハビリテーション依存的に劇的に回復させることを発見した(Abe et al., Science 2018)。一方で、エドネルピクの作用機序や脊髄損傷での有効性については不明点が多い。本研究ではエドネルピクのリハビリテーション依存的なAMPA受容体シナプス移行促進作用の分子メカニズムを追求し脊髄損傷モデルでの有効性を検討する。

Outline of Final Research Achievements

After spinal cord injury, motor paralysis poses significant challenges for sufficient recovery through rehabilitation, hindering independence and social participation. This study examined the effectiveness of edonerpic maleate, which promotes AMPA receptor synapse trafficking, in six non-human primates of the spinal cord injury model to assess the improvement in hand paralysis. The results demonstrated that the edonerpic maleate significantly facilitated the recovery from fine motor impairments of the fingers after spinal cord injury, compared to the control. Furthermore, the drug induced an expanded somatotopic representation of the upper limb distal region in the motor cortex. These findings suggest that edonerpic maleate enhances plastic changes in the primary motor cortex after spinal cord injury, facilitating the reorganization of neural circuits necessary for fine motor control of the fingers and enhancing the effects of rehabilitation.

Academic Significance and Societal Importance of the Research Achievements

本研究結果は、AMPA受容体のシナプス後膜への移行を促進するedonerpicが先行研究(Abe et al., Science, 2018)で示された皮質損傷や内包出血後の運動麻痺だけでなく脊髄損傷後の運動麻痺においても機能回復効果が見られることを示しており、その適応拡大の可能性を示唆している。また脊髄損傷後の機能回復に伴う大脳皮質の機能再編が薬理学的に促進可能であることも示している。WHOによると年間約25万人程度が脊髄損傷と診断されており、後遺障害の克服は社会的課題である。本研究は、脊髄損傷後の機能回復を薬剤で促進することができる可能性を示唆している点において社会的な意義があると考える。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Comments on the Screening Results   Annual Research Report
  • Research Products

    (18 results)

All 2023 2022 2021 2020

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (14 results) (of which Int'l Joint Research: 5 results,  Invited: 10 results) Book (1 results)

  • [Journal Article] Translational medicine of the glutamate AMPA receptor2021

    • Author(s)
      MIYAZAKI Tomoyuki、ABE Hiroki、UCHIDA Hiroyuki、TAKAHASHI Takuya
    • Journal Title

      Proceedings of the Japan Academy, Series B

      Volume: 97 Issue: 1 Pages: 1-21

    • DOI

      10.2183/pjab.97.001

    • NAID

      130007966417

    • ISSN
      0386-2208, 1349-2896
    • Year and Date
      2021-01-08
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Activity‐induced secretion of semaphorin 3A mediates learning2021

    • Author(s)
      Jitsuki‐Takahashi Aoi、Jitsuki Susumu、Yamashita Naoya、Kawamura Meiko、Abe Manabu、Sakimura Kenji、Sano Akane、Nakamura Fumio、Goshima Yoshio、Takahashi Takuya
    • Journal Title

      European Journal of Neuroscience

      Volume: 00 Issue: 10 Pages: 1-15

    • DOI

      10.1111/ejn.15210

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Biodistribution and radiation dosimetry of the positron emission tomography probe for AMPA receptor, [11C]K-2, in healthy human subjects2021

    • Author(s)
      Hatano Mai、Miyazaki Tomoyuki、Ishiwata Yoshinobu、Nakajima Waki、Arisawa Tetsu、Kuroki Yoko、Kobayashi Ayako、Takada Yuuki、Ogawa Matsuyoshi、Kawamura Kazunori、Zhang Ming-Rong、Higuchi Makoto、Taguri Masataka、Kimura Yasuyuki、Takahashi Takuya
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 1598-1598

    • DOI

      10.1038/s41598-021-81002-3

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Edonerpic maleate accelerates recovery of upper limb motor function from spinal injury in nonhuman primates2023

    • Author(s)
      浦丸浩一,阿部弘基,中島和希,鈴木迪諒,横山 修,矢野武明,西村幸男,高橋琢哉
    • Organizer
      日本生理学会 第100回記念大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] A Novel PET Tracer for AMPA Receptors Characterizes Neuropsychiatric Disorders in Human.2022

    • Author(s)
      Takuya Takahashi
    • Organizer
      33rd CINP Hybrid World Congress of Neuropsychopharmacology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] シナプス生理学のトランスレーショナルメディシン2022

    • Author(s)
      高橋琢哉
    • Organizer
      第59回日本リハビリテーション医学会学術集会スポンサード講演
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ヒト生体におけるシナプス可塑性の可視化と操作2022

    • Author(s)
      高橋琢哉
    • Organizer
      NEURO2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] シナプス生理学のtranslational medicine2022

    • Author(s)
      高橋琢哉
    • Organizer
      Progress in Mind Japan RC Webinar 第3回
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Translational medicine with the PET tracer for glutamate AMPA receptor2022

    • Author(s)
      Takuya Takahashi
    • Organizer
      13th Congress of the World Federation of Nuclear Medicine and Biology (WFNMB 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] シナプス生理学のtranslational medicine2022

    • Author(s)
      高橋琢哉
    • Organizer
      第49回日本小児臨床薬理学会学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] シナプス生理学のtranslational medicine2022

    • Author(s)
      高橋琢哉
    • Organizer
      第102回慶應医学会総会・シンポジウム
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] AMPA受容体のtranslational medicine2021

    • Author(s)
      高橋琢哉
    • Organizer
      第23回日本ヒト脳機能マッピング学会 共催セミナー
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] CRMP2結合化合物による中枢神経損傷後の運動機能促進2021

    • Author(s)
      實木 亨,高橋琢哉
    • Organizer
      第94回日本薬理学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Development and Application of Novel PET Tracer for AMPA Receptors2020

    • Author(s)
      Takuya Takahashi
    • Organizer
      SNMMI2020 Annual Meeting VIRTUAL Edition Satellite Lunch Symposium, Web seminar
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] シナプス可塑性:基礎から臨床へ2020

    • Author(s)
      高橋琢哉
    • Organizer
      第43回日本神経科学会 ランチョンセミナー
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] シナプス可塑性:基礎から臨床へ2020

    • Author(s)
      高橋琢哉
    • Organizer
      第62回日本小児神経学会 ランチョンセミナー
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] シナプス可塑性:基礎から臨床へ2020

    • Author(s)
      高橋琢哉
    • Organizer
      第39回日本認知症学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Book] ブレインサイエンス・レビュー20222022

    • Author(s)
      廣川 信隆、板東 武彦、岡田 康志
    • Total Pages
      300
    • Publisher
      アドスリー
    • ISBN
      9784910513065
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2026-01-16  

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