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Super-Recovery Induced by Novel Synthetic Synaptic Connectors and Regenerative Microenvironment Modulation: A New Therapeutic Approach for Neural Regeneration

Research Project

Project/Area Number 21H02817
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionAichi Medical University

Principal Investigator

Takeuchi Kosei  愛知医科大学, 医学部, 教授 (90206946)

Co-Investigator(Kenkyū-buntansha) 原 政人  愛知医科大学, 医学部, 教授 (00345878)
柳原 大  東京大学, 大学院総合文化研究科, 教授 (90252725)
瀬尾 憲司  新潟大学, 医歯学系, 教授 (40242440)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2023: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywords再生医療 / 神経科学 / シナプス / 神経再生 / 脊髄損傷 / 神経回路 / 細胞外環境 / コンドロイチン硫酸 / 細胞外マトリックス / 脊髄損傷・中枢神経障害 / AI機能解析
Outline of Research at the Start

中枢神経損傷、特に脊髄損傷時にはその最大の再生阻害因子であるコンドロイチン硫酸発現が慢性期・亜急性期の治療を困難とする。我々はその合成酵素の抑制(KO/KD)が劇的な機能回復を示すことを見出し(Nature Commun)、これを契機とした創薬スクリーニングを展開し核酸医薬を得ている。さらに、興奮性神経シナプスを人為的に結合する人工シナプスコネクターの合成に成功し脊髄損傷モデル系での損傷後の画期的な生理機能回復を示した(Science)。本研究では、再生阻害因子の除去(再生環境整備)とシナプスの積極的人為接続という2つの異なる新しい再生コンセプトを融合し、さらに痛覚・感覚受容の再生も推進する。

Outline of Final Research Achievements

To develop a super-recovery model that surpasses the physiological recovery and repair achieved by conventional spinal cord injury (SCI) models, we integrated two key strategies: (1) suppression of chondroitin sulfate, a known inhibitor of neural regeneration, using therapeutic antisense nucleic acids, and (2) promotion of artificial synaptic reconnection using the synaptic connector CPTX. This integrated approach led to the establishment of a novel super-recovery model. Furthermore, leveraging this model, we developed an AI-based motion capture system that enables objective and quantitative assessment of motor function recovery. The AI system successfully extracted critical parameters underlying motor recovery. Importantly, using this platform, we also revealed that the observed functional recovery includes significant improvements in sensory function mediated by CPTX, highlighting its dual role in promoting both motor and sensory restoration.

Academic Significance and Societal Importance of the Research Achievements

本研究では、神経再生を阻害するコンドロイチン硫酸の発現を人工核酸医薬で制御し、人工的シナプスコネクターCPTXによってシナプス再構築を促進することによって、従来を凌駕する脊髄損傷からの超回復モデルを確立した。さらに、AI機械学習によるモーションキャプチャー解析を導入し、運動・感覚機能回復を客観的かつ定量的に評価可能なシステムを構築した。再生医療・創薬開発の新基盤として、脊髄損傷患者の機能改善に貢献するマウス解析とヒト臨床応用をつなぐ成果として社会的意義を有すると考える。

Report

(3 results)
  • 2024 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (15 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (2 results) Remarks (2 results)

  • [Int'l Joint Research] Oxford University/MRC research center(英国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] DZNE(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Oxford大学/MRC(英国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] DZNE(ドイツ神経変性疾患研究センター)(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Inhibition of Transglutaminase 2 Reduces Peritoneal Injury in a Chlorhexidine-Induced Peritoneal Fibrosis Model2023

    • Author(s)
      Kunoki S, Tatsukawa H, Sakai Y, Kinashi H, Kariya T, Suzuki Y, Mizuno M, Yamaguchi M, Sasakura H, Ikeno M, Takeuchi K, Ishimoto T, Hitomi K, Ito Y
    • Journal Title

      Laboratory Investigation

      Volume: 103 Issue: 4 Pages: 100050-100050

    • DOI

      10.1016/j.labinv.2022.100050

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Increased urinary albumin leakage is related to injuries of glomerular glycocalyx and podocytes, and associated with tubular dysfunction in preeclampsia.2023

    • Author(s)
      Watanabe K, Okamoto T, Saitou T, Iwasaki A, Matsushita H, Takeuchi K, Asai A, Ito Y, Hara M, Wakatsuki A.
    • Journal Title

      Pregnancy Hypertens

      Volume: 17 Pages: 1-17

    • DOI

      10.1016/j.preghy.2023.02.001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 2. Highly selective transgene expression through the flip-excision switch system by using a unilateral spacer sequence.2023

    • Author(s)
      Matsushita, N.*, Kato, S.*, Nishizawa, K., Sugawara, M., Takeuchi, K., Miyasaka, Y., Mashimo, T. and Kobayashi, K. * Equal contribution
    • Journal Title

      Cell Rep. Methods

      Volume: 3 Issue: 2 Pages: 100393-100393

    • DOI

      10.1016/j.crmeth.2022.100393

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3. Catecholaminergic cell type-specific expression of Cre recombinase in knock-in transgenic rats generated by the Combi-CRISPR technology.2022

    • Author(s)
      Matsushita, N., Nishizawa, K., Kato, S., Iguchi, Y., Fukabori, R., Takeuchi, K., Miyasaka, Y., Mashimo, T. and Kobayashi, K.
    • Journal Title

      J. Neurosci. Methods

      Volume: 381 Pages: 109707-109707

    • DOI

      10.1016/j.jneumeth.2022.109707

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of chondroitin sulfate in the developmental and healing process of the dental pulp in mice2022

    • Author(s)
      Hiroko Ida-Yonemochi , Kosei Takeuchi , Hayato Ohshima
    • Journal Title

      Cell Tissue Res .

      Volume: 388(1) Issue: 1 Pages: 133-148

    • DOI

      10.1007/s00441-022-03575-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bone marrow derived mast cells injected into the osteoarthritic knee joints of mice induced by sodium monoiodoacetate enhanced spontaneous pain through activation of PAR2 and action of extracellular ATP2021

    • Author(s)
      Habuchi H, Izumi M, Dan J, Ushida T, Ikeuchi M, Takeuchi K, Habuchi O
    • Journal Title

      PLos One

      Volume: 16(6) Issue: 6 Pages: e0252590-e0252590

    • DOI

      10.1371/journal.pone.0252590

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chondroitin sulfate N-acetylgalactosyltransferase-1 knockout shows milder phenotype in experimental autoimmune encephalomyelitis than in wild type2020

    • Author(s)
      Inada Rino、Miyamoto Katsuichi、Tanaka Noriko、Moriguchi Kota、Kadomatsu Kenji、Takeuchi Kosei、Igarashi Michihiro、Kusunoki Susumu
    • Journal Title

      Glycobiology

      Volume: 31 Issue: 3 Pages: 260-265

    • DOI

      10.1093/glycob/cwaa072

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 人為的シナプスコネクトと神経再生環境場整備による後期脊髄損傷からの回復2022

    • Author(s)
      笹倉 寛之1、鈴木 邦道2、池野 正史1、森岡 幸1、武内 由佳1、柚崎 通介2、武内 恒成1
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] hTERT遺伝子の機能と神経疾患に対する細胞治療への応用2022

    • Author(s)
      池野 正史1、笹倉 寛之1、武内 恒成
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Remarks] https://www.take-lab.org/

    • Related Report
      2022 Annual Research Report
  • [Remarks] 愛知医科大学武内研究室WEBサイト

    • URL

      https://www.take-lab.org/

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2026-01-16  

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