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首页> 外文期刊>Circulation journal >Efficient cardiomyogenic differentiation of embryonic stem cell by fibroblast growth factor 2 and bone morphogenetic protein 2.
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Efficient cardiomyogenic differentiation of embryonic stem cell by fibroblast growth factor 2 and bone morphogenetic protein 2.

机译:成纤维细胞生长因子2和骨形态发生蛋白2对胚胎干细胞的高效心肌分化。

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BACKGROUND: Despite the pluripotency of embryonic stem (ES) cells, the specific control of their cardiomyogenic differentiation remains difficult. The aim of the present study was to investigate whether growth factors may efficiently enhance the in vitro cardiac differentiation of ES cells. METHODS AND RESULTS: Recombinant growth factors at various concentrations or their inhibitors were added according to various schedules during the cardiomyogenic differentiation of ES cells. Cardiomyogenic differentiation was assessed by mRNA and protein expressions of several cardiomyocyte-specific genes. Basic fibroblast growth factor-2 (FGF-2) and/or bone morphogenetic protein-2 (BMP-2) efficiently enhanced the cardiomyogenic differentiation, but only when they were added at the optimal concentration (1.0 ng/ml in FGF-2 and 0.2 ng/ml in BMP-2; relatively lower than expected in both cases) for the first 3 days. Inhibition of FGF-2 and/or BMP-2 drastically suppressed the cardiomyogenic differentiation. CONCLUSION: FGF-2 and BMP-2 play a crucial role in early cardiomyogenesis. The achievement of efficient cardiac differentiation using both growth factors may facilitate ES cell-derived cell therapy for heart diseases as well as contribute to developmental studies of the heart.
机译:背景:尽管胚胎干(ES)细胞具有多能性,但仍难以特异性控制其心肌分化。本研究的目的是研究生长因子是否可以有效增强ES细胞的体外心脏分化。方法和结果:在ES细胞的心肌分化过程中,按照不同的时间表添加了不同浓度的重组生长因子或其抑制剂。通过几个心肌细胞特异性基因的mRNA和蛋白质表达来评估心肌发生分化。碱性成纤维细胞生长因子2(FGF-2)和/或骨形态发生蛋白2(BMP-2)有效地增强了心肌分化,但是只有当它们以最佳浓度(FGF-2和在前3天中,BMP-2中的浓度为0.2 ng / ml;在两种情况下均相对低于预期)。抑制FGF-2和/或BMP-2可以大大抑制心肌分化。结论:FGF-2和BMP-2在早期心肌发生中起着至关重要的作用。使用这两种生长因子实现有效的心脏分化可能有助于ES细胞衍生的细胞疗法治疗心脏病,并有助于心脏的发育研究。

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