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axonal fusion method for functional recovery with using giant axon of squid and axon of mice

Research Project

Project/Area Number 16K11360
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plastic surgery
Research InstitutionMie University (2017-2019)
The University of Tokyo (2016)

Principal Investigator

Narushima Mitsunaga  三重大学, 医学系研究科, 教授 (80431873)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords神経融合 / 軸索 / 機能再建 / イカ / 巨大軸索 / 神経 / 融合 / PEG / axonal fusion / 軸索輸送 / 再生 / マイクロサージャリー
Outline of Final Research Achievements

With using squid, function recovery process of a nerve re-connection was observed after clamping and unclamping. Changes in axonal transport were directly observed using fluorescence imaging and electro-physiological techniques.
We developed a new nerve block hemi-anesthesia for squid in vivo and measured the time to release the giant axon clamp and the time to recover function. The influx of calcium into the axons was suggested during clamp. Controlling influx is also important for an axonal fusion. In addition, GFP mice were used to observe the transport of mitochondria into axons, and control data were obtained.

Academic Significance and Societal Importance of the Research Achievements

今回の研究にて融合法開発のモデル動物の確立と今後の課題を見出すことができた。神経融合法を開発することでがん治療や外傷によって神経麻痺となった顔面や四肢の回復が自然で元の状態に近い状態へ回復させることが可能となる。今後electrofusion 法(電気的融合法)(Wiley InterdiscipRev Nanomed Nanobiotechnol. 2010;2(2):151-61)、PEG 法(化学的融合法)(J Neurocytol 2000 29(9):633-43)、HVJ 法(センダイウィルスエンベロープ法)の三種類を組み合わせ、最適な融合法を選定して治療に役立てる端緒を得た。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2020 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (5 results) (of which Invited: 2 results)

  • [Journal Article] 臨床医はどのように研究をしたらよいか2016

    • Author(s)
      成島三長
    • Journal Title

      形成外科

      Volume: 59 Pages: 1286-1291

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] 神経損傷に対する様々な再建・再生治療2020

    • Author(s)
      成島三長
    • Organizer
      第22回日本口腔学顔面外傷学会総会・学術大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] イモリにおける再生と神経からScarless wound healingへの可能性を探る2020

    • Author(s)
      成島三長
    • Organizer
      第63回日本形成外科学会総会・学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 神経軸索輸送のミトコンドリア蛍光観察法 イカから哺乳類まで2017

    • Author(s)
      成島三長
    • Organizer
      末梢神経を語る会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] イカにおける上肢神経血管束の哺乳類との比較検討2016

    • Author(s)
      成島三長
    • Organizer
      第25回形成外科学会基礎学術集会
    • Place of Presentation
      ナレッジキャピタル 大阪
    • Year and Date
      2016-09-15
    • Related Report
      2016 Research-status Report
  • [Presentation] 人工神経による再生医療の展望2016

    • Author(s)
      成島三長
    • Organizer
      第40回日本頭頸部癌学会
    • Place of Presentation
      ソニックシティ 埼玉
    • Year and Date
      2016-06-09
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-12-27  

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