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首页> 外文期刊>Cell and Tissue Research >The differentiation effect of bone morphogenetic protein (BMP) on human amniotic epithelial stem cells to express ectodermal lineage markers
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The differentiation effect of bone morphogenetic protein (BMP) on human amniotic epithelial stem cells to express ectodermal lineage markers

机译:骨形态发生蛋白(BMP)对人羊膜上皮干细胞的分化作用,表达异位谱系标记

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摘要

Stem cells are a promising tool for treatment of a variety of degenerative diseases. Human amniotic epithelial stem cells (hAECs) have desirable and unique characteristics that make them a proper candidate for cell therapy. In this study, we have investigated the effects of BMP-4 (bone morphogenetic protein-4) and its inhibition on differentiation of AECs into ectodermal lineages. Analysis of AEC-derived ectodermal lineages (neurons and keratinocytes) was performed by using flow cytometry technique for Map2 and beta-tubulin (as neuron markers), Olig2 and MBP (as oligodendrocyte markers), and K14 and K10 (as keratinocyte markers). The results of this study illustrated that noggin (as BMP antagonist), BMP4, and both BMP4 and heparin (together or separately) increased neural and keratinocyte marker expression, respectively. The expression of markers MAP2, olig2, and K14 in hAECs has been significantly decreased 21 days after exposure to differentiation medium (without growth factors) compared with isolation day, which supports the hypothesis that AECs can be dedifferentiated into pluripotent cells. Moreover, activation and inhibition of BMP signaling have no effects on viability of hAECs. The results of this study showed that BMP signaling and its inhibition are the key factors for ectodermal lineage differentiation of amnion-derived stem cells.
机译:干细胞是治疗各种退行性疾病的一种有前途的工具。人羊膜上皮干细胞(hAECs)具有理想和独特的特性,使其成为细胞治疗的合适候选者。在这项研究中,我们研究了BMP-4(骨形态发生蛋白-4)及其对AEC分化为外胚层谱系的抑制作用。使用流式细胞术技术对Map2和β-微管蛋白(作为神经元标记)、Olig2和MBP(作为少突胶质细胞标记)以及K14和K10(作为角质形成细胞标记)进行AEC衍生外胚层谱系(神经元和角质形成细胞)的分析。这项研究的结果表明,诺金(作为BMP拮抗剂)、BMP4以及BMP4和肝素(一起或分别)分别增加了神经和角质形成细胞标记物的表达。与隔离日相比,暴露于分化培养基(不含生长因子)21天后,血管活性物质中标记物MAP2、olig2和K14的表达显著降低,这支持了AEC可以去分化为多能细胞的假设。此外,BMP信号的激活和抑制对造血干细胞的活力没有影响。本研究结果表明,BMP信号及其抑制是羊膜源性干细胞外胚层分化的关键因素。

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