空間的に指向し,時間的に連続した滑らかな筋肉細胞-内皮原始細胞-二次元細胞シート 血管新生 発血性心筋梗塞
Yasuhiro Shudo1, Jeffrey E Cohen, John W Macarthur
1Division of Cardiovascular Surgery, Department of Surgery, University of Pennsylvania School of Medicine, Philadelphia, PA (Y.S., J.E.C., J.W.M., P.A., P.F.H., E.C.Y., A.S.F., A.T., J.P., Y.J.W.); and Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan (S.M., Y.S.).
Circulation
|September 14, 2013
まとめ
この研究では,内皮原生細胞 (EPC) と滑らかな筋肉細胞 (SMC) を組み合わせた細胞シートが,血液血管形成を効果的に促進し,不全性心筋症のラットモデルで心臓機能を改善することを示しています.
科学分野:
- 再生医学は,再生医療である.
- 心血管研究 循環器科の研究
- バイオテクノロジー バイオテクノロジー
背景:
- 内皮原生細胞 (EPC) は,血管新生のための治療的可能性を秘めているが,成熟した血管系の発達能力が欠如している可能性があります.
- 血管再生のためにEPCの単純な注射を制限することができます.
- この研究では,同栽培のEPCと滑らかな筋肉細胞 (SMC) を使用して血管新生能力を高める新しいアプローチを探求しています.
研究 の 目的:
- 空間的に配置されたEPC-SMCバイレベル細胞シートの有効性を研究し,超治療的血管新生構造を作成する.
- EPC と SMC の間のネイティブの相互作用を模倣して,血管化の改善を図る.
- 乳房性心筋病のネズミモデルでの治療の可能性を評価する.
主な方法:
- 主要なEPCとSMCは,Wistarラットから分離されました.
- 特殊な細胞培養皿を使用して,SMC-EPCの二層細胞シートを作成しました.
- 冠動脈連結を経て,細胞シート移植,細胞注射,または治療を施さないことにより,ネズミの不全性心筋症のモデルが確立されました.
主要な成果:
- 同栽培されたEPCとSMCは,インビトロで有意なレベルのサイトカインを放出します.
- 細胞シート移植により,毛細血管の密度が増加し,不血症の境界地帯における血液 perfusion が改善されました.
- 細胞追跡により,移植された細胞の直接的な移動と分化が,心筋内の機能的な血管要素にされ,心室の機能を強化することが明らかになった.
結論:
- 空間的に配置されたEPC-SMC二層のセルシート技術は,EPCとSMCの間の自然な相互作用を効果的に促進します.
- このアプローチは,構造的に成熟した機能的な微血管の形成を容易にする.
- 細胞シート技術は,乳房不全性心筋症のネズミのモデルにおいて,心筋筋機能を著しく改善した.
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