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胞による傷痕の減少は,脊髄損傷後の回復を促進する
David Oliveira Dias1, Hoseok Kim2, Daniel Holl1
1Department of Cell and Molecular Biology, Karolinska Institutet, SE-171 77 Stockholm, Sweden.
Cell
|March 6, 2018
まとめ
中枢神経系 (CNS) 損傷後の胞の傷害を抑制することで,線維症が軽減され,軸索再生が強化され,マウスの感覚運動機能が回復しました.
科学分野:
- 神経科学
- 再生医療
- 細胞生物学
背景:
- 脊髄損傷などの中枢神経系 (CNS) の損傷は,しばしば軸索の切断により永久的な機能的欠陥を引き起こす.
- 傷の部位で傷痕組織が形成されることは,軸索再生の主要な障害です.
- ペリサイトは傷痕組織形成と線維症に寄与する.
研究 の 目的:
- 中枢神経損傷後の傷痕形成におけるペリサイトの子孫の役割を調査する.
- 胞由来線維症を抑制することで,軸索再生と機能回復が促進されるかどうかを判断する.
- 中枢神経損傷の治療にペリサイトを標的とする治療の可能性を探る.
主な方法:
- ネズミの脊髄損傷モデルです
- 遺伝子の操作で 細胞の生成を阻害する
- 傷痕組織と細胞外マトリックス堆積の組織学的な分析
- 特定の経路の追跡を用いた軸索再生の評価
- 感覚運動機能の回復の評価
- 再生した軸索の機能的統合を評価するための光遺伝的刺激.
主要な成果:
- 傷害後の繊維症と細胞外マトリックス収縮を著しく減少させた.
- ラフェスピナルとコルチコスピナル経路の軸索の再生が強化されたことが観察されました.
- 治療を受けた動物では,感覚運動機能の回復が改善された.
- 脊髄回路に機能的統合を示した.
- 再生した軸索の数と機能回復の間の正の相関関係が見つかりました.
結論:
- 中枢神経損傷後の軸索再生を促進する有効な戦略です.
- 脊髄損傷後の結果を改善する 有望な治療法です
- 傷痕の調節による軸索再生の促進は,重要な機能回復につながります.
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