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Differentiation of human bone marrow stem cells into cells with a neural phenotype: diverse effects of two specific treatments

机译:将人骨髓干细胞分化为具有神经表型的细胞:两种特定疗法的不同作用

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Background It has recently been demonstrated that the fate of adult cells is not restricted to their tissues of origin. In particular, it has been shown that bone marrow stem cells can give rise to cells of different tissues, including neural cells, hepatocytes and myocytes, expanding their differentiation potential. Results In order to identify factors able to lead differentiation of stem cells towards cells of neural lineage, we isolated stromal cells from human adult bone marrow (BMSC). Cells were treated with: (1) TPA, forskolin, IBMX, FGF-1 or (2) retinoic acid and 2-mercaptoethanol (BME). Treatment (1) induced differentiation into neuron-like cells within 24 hours, while a longer treatment was required when using retinoic acid and BME. Morphological modifications were more dramatic after treatment (1) compared with treatment (2). In BMSC both treatments induced the expression of neural markers such as NF, GFAP, TUJ-1 and neuron-specific enolase. Moreover, the transcription factor Hes1 increased after both treatments. Conclusion Our study may contribute towards the identification of mechanisms involved in the differentiation of stem cells towards cells of neural lineage.
机译:背景技术最近已经证明,成体细胞的命运并不局限于它们的起源组织。特别地,已经显示出骨髓干细胞可以产生不同组织的细胞,包括神经细胞,肝细胞和肌细胞,从而扩大了它们的分化潜力。结果为了鉴定能够导致干细胞向神经谱系细胞分化的因素,我们从人成年骨髓(BMSC)分离了基质细胞。用以下物质处理细胞:(1)TPA,福司可林,IBMX,FGF-1或(2)视黄酸和2-巯基乙醇(BME)。处理(1)在24小时内诱导分化为神经元样细胞,而使用视黄酸和BME则需要更长的处理时间。与治疗(2)相比,治疗(1)后形态学改变更为明显。在BMSC中,两种处理均诱导神经标志物如NF,GFAP,TUJ-1和神经元特异性烯醇化酶的表达。此外,两种处理后转录因子Hes1均增加。结论我们的研究可能有助于鉴定干细胞向神经谱系细胞分化的机制。

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