骨髓单核细胞治疗后心脏功能改善的机制:心血管血统承诺的作用
Chang-Hwan Yoon1, Masamichi Koyanagi, Kazuma Iekushi
1Institute of Cardiovascular Regeneration, Centre for Molecular Medicine, University of Frankfurt, Germany.
Circulation
|April 28, 2010
概括
心脏病发作后移植的骨髓细胞通过成为血管细胞来帮助恢复. 消除这些血管细胞恶化了心脏功能,表明它们在恢复中起着至关重要的作用.
科学领域:
- 再生医学是一种再生医学.
- 心血管研究研究心血管研究
- 细胞生物学 细胞生物学
背景情况:
- 细胞疗法提供了潜在的功能恢复后缺血.
- 骨髓衍生细胞可以减少心脏病发作的大小并改善射出分数.
- 机制包括膜效应和细胞分化成各种血统.
研究的目的:
- 研究从移植骨髓细胞中分化细胞系对缺血后功能恢复的贡献.
- 确定内皮,光滑肌和心肌细胞系在心脏修复中的特定作用.
主要方法:
- 针对特定细胞系 (内皮,光滑肌肉,心肌细胞) 的工程诱导性自杀基因载体.
- 在移植后2周使用了lentiviralthymidine kinase和ganciclovir用于选择性细胞枯竭.
- 使用了急性心肌梗塞模型,用于移植骨髓单核细胞的老鼠.
主要成果:
- 消除内皮细胞或SM22alpha表达细胞显著恶化了射出分数.
- 心脏致力细胞的枯竭没有影响喷射分数.
- 消除内皮氧化合成酶表达细胞降低了毛细血管和动脉的密度.
结论:
- 移植的骨髓单核细胞分化为血管系,对心脏修复有功能性的贡献.
- 骨髓衍生细胞的血管细胞命运决定对于心肌梗塞后的体内功能恢复至关重要.
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