機械反応性幹細胞は,の再生で神経の運命を獲得する
Ryan C Ransom1,2, Ava C Carter3, Ankit Salhotra1,2
1Department of Surgery, Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA.
Nature
|October 26, 2018
まとめ
機械的な力は 骨格幹細胞を活性化させ 骨を再生させます 焦点粘着キナーゼ (FAK) の抑制は,この重要な骨の再生プロセスを阻害する.
科学分野:
- 骨格生物学
- 再生医療
- 機械生物学
背景:
- 大人の組織の再生は 刺激に反応する幹細胞に依存しています
- 骨格幹細胞の再生に 機械的な力がどう影響するかを理解することは 極めて重要です
- マンジブラーディストラクション・オステオゲネシスは 骨格の再生を研究するモデルです
研究 の 目的:
- 骨格幹細胞による再生における 機械的刺激の役割を調査する.
- 骨格幹細胞におけるメカニカル伝導の基礎となる分子メカニズムを解明する.
- 下の分散性骨形成に伴う重要な信号伝達経路を特定する.
主な方法:
- マンディブーラ・ディストラクション・オステオゲネシスの遺伝的に解剖可能なマウスモデルの開発.
- 新しく形成された骨の起源を追跡するためのクローン分析.
- 染色体と転写プロファイリングで 幹細胞の活動を分析する.
- 焦点粘着キナーゼ (FAK) 経路の薬理学的抑制
主要な成果:
- 新しく形成された骨は,静止骨幹細胞からクローンで得られます.
- 骨格幹細胞は再生時に焦点結合キナーゼ (FAK) 信号経路を活性化します.
- FAKの抑制は新しい骨の形成を完全に廃止しました.
- FAK媒介メカニカルトランスデュークションは,原始的な神経細胞の特徴である遺伝子調節プログラムとレトロトランスポーズンを再活性化します.
結論:
- 骨格幹細胞は,FAKシグナル伝達によって促進され,再生中に発達状態に戻ります.
- この原始的な状態への戻りは 成人の骨格組織の頑丈な幹細胞ベースの再生の基礎です
- FAKシグナリングをターゲットにすることで,骨の再生を促進する治療戦略を提供することができます.
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