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DNA methylation microarray uncovers a permissive methylome for cardiomyocyte differentiation in human mesenchymal stem cells

机译:DNA甲基化微阵列揭示了人间充质干细胞中心肌细胞分化的允许甲基杂物

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Differentiation of Whartons Jelly-Mesenchymal Stem cells (WJ-MSCs) into cardiomyocytes (CMs) in vitro has been reported widely although contradictions remain regarding the maturation of differentiated MSCs into fully functioning CMs. Studies suggest that use of epigenetic modifiers like 5′Azacytidine (5-AC) in MSCs de-methylates DNA and results in expression of cardiac-specific genes (CSGs). However, only partial expression of the CSG set leads to incomplete differentiation of WJ-MSCs to CMs. We used the Agilent 180?K human DNA methylation microarray on WJ-MSCs, 5-AC treated WJ-MSCs and human cardiac tissue (hCT) to analyze differential DNA methylation profiles which were then validated by bisulfite sequencing PCR (BSP). BSP confirmed that only a limited number of CSGs were de-methylated by 5-AC in WJ-MSCs. It also revealed that hCT displays a methylation profile similar to promoter regions of CSG in untreated WJ-MSCs. Thus, the presence of hypo-methylated CSGs indicates that WJ-MSCs are ideal cell types for cardiomyogenic differentiation.
机译:据据报道,古代果冻 - 间充质干细胞(WJ-MSCs)分化为体外细胞(CMS),尽管仍然存在对分化的MSCs成熟成功能CMS的矛盾。研究表明,在MSCS de-甲基化物DNA中使用如5'azacy锡啶(5-AC)这样的表观遗传改性剂并导致表达心脏特异性基因(CSG)。然而,只有CSG集合的部分表达导致WJ-MSCS对CMS的不完全分化。我们使用Agilent 180?K人DNA甲基化微阵列在WJ-MSCs,5分ac处理的WJ-MSC和人心脏组织(HCT)上以分析通过亚硫酸氢盐测序PCR(BSP)验证的差异DNA甲基化型材。 BSP证实,在WJ-MSCs中仅在5-AC中仅将有限数量的CSG脱甲基化。它还显示HCT显示与未处理的WJ-MSC的CSG的启动子区域类似的甲基化型材。因此,哌甲基化的CSG的存在表明WJ-MSC是心肌细胞分化的理想细胞类型。

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