Transdifferentiation of Fetal Liver-delivered Mesenchymal Stem Cells into Cardiomyocyte-like Cells

• 来源期刊: 岭南心血管病杂志（英文版）
• 关键词: Mesenchymal stem cells 5-azacytidine Retinoitic acid Dimethylsulfoxide Cardiac differentiation
• 年，卷（期）: 2006,（2）
• 页码范围: 78-85
• 页数: 8页
• 语种: 英文

摘要

Objectives To explore the possibility to induce mesenchymal stem cells from human fetal livers (FMSCs) to differentiate along cardiac lineage and the way to obtain high rate of differentiation. Methods Cells from passage 6-9 were plated at the density of 1.5 × 104/cm2 and were treated with the combination of 5-azacytine(5-aza), retinoitic acid(RA) and Dimethylsulfoxide (DMSO) in different doses when near confluence. 24 hours later, the treatment was removed by changing into normal medium without inducers. Different culture conditions were tried, including temperature, oxygen content and medium. Results When FMSCs were treated with highdose combination ( 5-aza 50 μM +RA 10-1 μM +DMSO 1％) and modified combination(5-aza 50 μM+RA 10-3 μM + DMSO 0.8 ％) in cardiac differentiation medium (CDM), at 37℃ and 20％ O2, the cardiac differentiation was induced. When near confluence, cells became round and tended to gather together to form ball-like structures. 3 weeks after treatment, the cells were harvested and stained with anti-desmin and cardiac troponin I antibodies, and about 40％ of the cells were positively stained. No beating cells observed during observation. Conclusions FMSCs have the potential to differentiate along cardiac lineage, and the stimulus for the cardiac differentiation is different from those for MSCs from different species.