局所的な音響ヘッジホッグ遺伝子療法は,内皮原幹細胞媒介のマイクロ血管リモデリングを強化することによって,糖尿病の傷の治癒を加速します
Jun Asai1, Hideya Takenaka, Kengo F Kusano
1Division of Cardiovascular Research and Medicine, St Elizabeth's Medical Center, Tufts University School of Medicine, Boston, MA, USA.
Circulation
|May 17, 2006
まとめ
局所用Sonic hedgehog (Shh) 遺伝子治療は,血管形成を促進することによって,糖尿病のマウスの傷の治癒を加速します. このアプローチは,マイクロ血管の再編成と傷の修復を促進し,糖尿病の治癒障害を治療する可能性を秘めています.
科学分野:
- 発達生物学 発達生物学について
- 再生医学は,再生医療である.
- 分子生物学は分子生物学である.
背景:
- ソニック・ヘッジホッグ (Shh) は,胚の発達と表皮-メゼンキマ相互作用を調節する重要な形態原体である.
- 外因的なShh投与は,血管新生を促進し,不血性組織の修復を助けます.
- 血管新生は傷の修復に不可欠であり,糖尿病はこのプロセスを損なう.
研究 の 目的:
- エッジホッグ経路を活性化することで,マイクロ血管再構築を改善することで,皮膚の傷の治癒を加速するかどうかを調査する.
- 創傷治癒の障害で知られている糖尿病マウスモデルで仮説を検証する.
主な方法:
- Ptc1-LacZレポーターマウスを利用して,傷の修復中にShh経路誘導を確認しました.
- 糖尿病のマウスで,裸のDNAでShhをコードする局所的な遺伝子療法を採用しました.
- 創傷治癒,血管性,細胞応答 (線維芽細胞,内皮原細胞) を in vitro および in vivo で評価した.
主要な成果:
- SHH経路は,皮膚性創傷修復の際に上昇調節されます.
- 局所Shh遺伝子療法は,糖尿病のマウスの創傷回復を著しく加速させ,血管性の増加によって特徴づけられました.
- 増強された血管性には,骨髄由来の内皮原細胞の増進が部分的に関係していた.
- Shhは血管性サイトカインと増殖のフィブロブラスト産生を促進し,内皮原始細胞機能を直接強化しました.
結論:
- 局所 Shh 遺伝子治療は,傷の治癒のための重要な治療的可能性を示しています.
- この戦略は,糖尿病患者など,小循環障害のある患者にとって特に有望です.
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