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首页> 外文期刊>Journal of International Medical Research >In Vitro Differentiation of Osteocytes and Adipocytes from Human Placenta-Derived Cells
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In Vitro Differentiation of Osteocytes and Adipocytes from Human Placenta-Derived Cells

机译:从人胎盘来源的细胞体外分化成骨细胞和脂肪细胞

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OBJECTIVE: To investigate the capability of human placenta-derived adherent cells to differentiate into osteocytes and adipocytes. METHODS: Placenta-derived adherent cells were isolated by type IV collagenase digestion of a single freshly obtained human placenta and cultured under standard conditions. Cell surface markers of adherent cells from passages 3 – 9 were analysed by flow cytometry. Osteocytic differentiation was induced with β-glycerol phosphate, vitamin C and dexamethasone and confirmed by Alizarin red staining. Adipocytic differentiation was induced with dexamethasone and insulin and confirmed by oil red O staining. RESULTS: Placenta-derived adherent cells were positive for high levels of CD44 and CD105 and very low levels of CD29 but were negative for CD34, CD45 and CD19. This pattern of cell surface markers is identical to human mesenchymal stem cells. Alizarin red-positive cells were detected 10 days after the induction of osteocyte differentiation. Oil red O-positive cells weredetected 7 days after the induction of adipocyte differentiation. CONCLUSIONS: Placenta-derived adherent cells can differentiate into either osteocytes or adipocytes in vitro. The human placenta may provide an alternative source of mesenchymal stem cells for basic research and clinical use.
机译:目的:探讨人胎盘来源贴壁细胞分化为骨细胞和脂肪细胞的能力。方法:通过IV型胶原酶消化单个新鲜获得的人胎盘,分离胎盘来源的贴壁细胞,并在标准条件下进行培养。通过流式细胞术分析了来自第3-9代的贴壁细胞的细胞表面标记。用β-甘油磷酸酯,维生素C和地塞米松诱导成骨细胞分化,并通过茜素红染色证实。地塞米松和胰岛素诱导脂肪分化,并通过油红O染色证实。结果:胎盘来源的贴壁细胞高水平的CD44和CD105为阳性,而低水平的CD29为阳性,而CD34,CD45和CD19为阴性。细胞表面标志物的这种模式与人间充质干细胞相同。诱导骨细胞分化后10天检测到茜素红阳性细胞。诱导脂肪细胞分化后7天检测到油红O阳性细胞。结论:胎盘来源的贴壁细胞可以在体外分化为骨细胞或脂肪细胞。人胎盘可能为间充质干细胞提供替代来源,用于基础研究和临床应用。

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