内皮細胞は心筋細胞の生存と空間的再編成を促進する:心臓の再生への影響

Daria A Narmoneva¹, Rada Vukmirovic, Michael E Davis

¹Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.

Circulation

|August 11, 2004

まとめ

内皮細胞 (ECs) は,心筋細胞 (CM) の生存と組織を著しく高めます. 機能的なEC-CM相互作用を確立することは,心臓再生戦略にとって極めて重要です.

科学分野:

心血管生物学心血管生物学
再生医学は,再生医療である.
バイオマテリアル科学バイオマテリアル科学

背景:

内皮-心筋細胞 (CM) 相互作用は,心臓の機能に不可欠です.
CM生存におけるこれらの相互作用の特定の役割は,ほとんど未調査のままである.
この研究では,内皮細胞 (ECs) がCMの生存および組織に与える影響を調査しました.

研究の目的:

内皮細胞 (ECs) が心筋細胞 (CM) の生存を促進するかどうかを判断する.
3D環境におけるCMの空間組織にECの影響を評価する.
心臓再生におけるEC-CM相互作用の可能性を調査する.

主な方法:

心筋筋細胞 (CMs) とマイクロ血管内皮細胞 (ECs) はペプチド水素ゲルで3つの構成で培養されました:CMsのみ,CMsとECsをコカルチャーで,またはCMsを前型ECネットワークで培養しました.
細胞組織,アポトーシス,ネクロシス,同期収縮,コネキシン43発現を分析した.

主要な成果:

ECは,既存のECネットワークに沿ってCMの重要な再編成を促進しました.
ECの存在は,CMアポトーシスとネクロシスを著しく抑制しました.
プリフォームされたECネットワークで培養されたCMは,同時共培養と比較して細胞死亡が著しく減少した (P<0.01).
ECは,同期したCM収縮とコネキシン43発現を強化した.

結論:

内皮は,心筋細胞の生存と組織化を促進する上で,新しい重要な役割を果たします.
心筋筋細胞と内皮細胞の機能的相互作用は,心筋再生戦略の成功に不可欠です.

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