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Intramyocardial Cell Delivery: Observations in Murine Hearts
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冠動脈経由の細胞移植のための新しい方法の開発
K Suzuki1, N J Brand, R T Smolenski
1Department of Cardiothoracic Surgery, National Heart and Lung Institute, Imperial College School of Medicine at the Heart Science Centre, Harefield Hospital, Middlesex, UK. Ken.Suzuki@harefield.nthames.nhs.uk
Circulation
|November 18, 2000
まとめ
冠動脈内輸液は,心不全の細胞移植の効率的な方法を提供し,心筋内における全細胞分布を可能にすることで,従来の注射を上回ります. このテクニックは,心臓外科手術中に臨床応用の可能性を示しています.
科学分野:
- 再生医学は,再生医療である.
- 心血管生物学 心血管生物学
- 細胞療法 細胞療法
背景:
- 細胞移植は,末期心不全の有望な治療法である.
- 直接筋内注射は,心筋内における全体的な細胞分布を制限する.
- 冠内輸液は,心臓細胞の供給のための新しいアプローチを提示します.
研究 の 目的:
- 心臓の細胞移植のための新しい冠内輸液法を開発し,評価する.
- 心臓組織内の移植細胞の効率と統合を評価する.
主な方法:
- ラットの骨格筋のL6細胞を生成し,ss-ガラクトシダース (ss-gal) を発現する.
- 10^6 ss-gal発現する細胞を冠動脈経由で解剖されたネズミの心臓に注入した.
- ヘテロトップの心臓移植を行い,細胞の移植と分化を分析した.
主要な成果:
- 3日目には心臓あたり約5x10^5の移植細胞があり,28日目には5x10^6に増加しました.
- ss-gal陽性細胞は,左動脈と右動脈の両方の冠動脈領域の心臓層に分布しています.
- 移植された細胞はミオチューブに微分化し,ネイティブ心筋と統合され,コネクシン43を発現し,心臓機能の低下は観察されなかった.
結論:
- 心臓細胞移植のための効率的な冠内輸液法を開発した.
- このテクニックは,心臓に細胞の供給を全般的に促進します.
- 心臓外科手術中の臨床環境で潜在的に適用できます.
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