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Stimulation of Notch Signaling in Mouse Osteoclast Precursors
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骨髄のマイクロ環境からの特定のジャッジ-1信号は,新血管化のための内皮原始細胞の発達のために必要である
Sang-Mo Kwon1, Masamichi Eguchi, Mika Wada
1Stem Cell Translational Research Laboratory, RIKEN Center For Developmental Biology/Institute of Biomedical Research and Innovation, Kobe, Japan.
Circulation
|July 2, 2008
まとめ
Jagged-1 (ジャグ-1) 媒介のノッチ信号は,新血管化における内皮原始細胞 (EPC) にとって極めて重要です. この研究は,Jag-1を強調しています.
科学分野:
- 細胞生物学 細胞生物学
- 血管生物学 血管生物学
- 再生医学は,再生医療である.
背景:
- 内皮原生細胞 (EPC) は,不血症状態における新血管化に不可欠である.
- EPC機能を制御する正確なシグナル伝達経路は,まだ完全に理解されていません.
研究 の 目的:
- 内皮原幹細胞 (EPC) の動力学と機能を調節するJagged-1 (Jag-1) 媒介のNotchシグナル伝達の役割を明らかにする.
- 強化された新血管化のためのJag-1シグナリングを調節する治療の可能性を調査する.
主な方法:
- ネズミのジャグ-1シグナリングの不活性化により,産後血管新生とEPCへの影響を評価した.
- Jag-1ノックアウト (Jag-1-/-) と野生型のマウスからのEPCの比較分析.
- Notchのリガンドを過剰発現するストロマル細胞を用いた機能獲得研究.
- EPC移植後の治療性新血管化の評価.
主要な成果:
- Jag-1媒介のNotch信号の無活性化により,EPCの増殖,生存,分化,および動員を損なうことにより,後肢イシュケミアの血管新生を抑制しました.
- Jag-1-/-マウスからのEPCは,野生型EPCと比較して,不血性新血管化の治療可能性が低下した.
- ジャグ-1媒介のノッチ信号は,EPCのコミットメントを促進し,新血管化を強化し,ジャグ-1刺激のEPC移植によって救出されたジャグ-1-/-マウスの新血管化の障害を伴いました.
結論:
- 骨髄の微環境から発生する特定のJag-1-derived Notch信号は,EPC媒介による血管新生に不可欠である.
- Jag-1-Notchシグナリングをターゲットにすることは,治療的な新血管化を調節するための有望な戦略です.
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