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Evaluation of chemokine and cytokine profiles in osteoblast progenitors from umbilical cord blood stem cells by BIO-PLEX technology

机译:利用BIO-PLEX技术评估脐血干细胞成骨祖细胞趋化因子和细胞因子的分布

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We have used cytokine protein array to analyze the secretion of cytokines from an osteoblastic clone derived from human umbilical cord blood mesenchymal stem cells (MSCs) cultured in an osteogenic differentiation medium. The analysis demonstrated the unexpected ability of osteoblast committed cells and their early progenitors to produce significant amounts of a range of soluble immune mediators without in vitro exposure to clinically relevant bacterial pathogens. The cells were expanded and their osteogenic potential analyzed over 45 days of culture was revealed by the expression of osteoblast-specific markers (alkaline phosphatase and Runx2), and by matrix mineralization. Over this culture period, the cells secreted particularly high levels of IL-8, MCP-1 and VEGF, but did not express IL-2, IL-7, IL-17, eotaxin, G-CSF and IFN-γ. These findings should encourage the use of human umbilical cord blood as a potential stem cells source for bone regeneration.
机译:我们已经使用细胞因子蛋白阵列来分析成骨细胞克隆的细胞因子的分泌,该成骨细胞克隆源自在成骨分化培养基中培养的人脐带血间充质干细胞(MSC)。分析表明,成骨细胞定型细胞及其早期祖细胞在不暴露于临床相关细菌病原体的情况下,产生大量可溶免疫介体的出乎意料的能力。扩增细胞,并通过成骨细胞特异性标志物(碱性磷酸酶和Runx2)的表达以及基质矿化来揭示经过45天培养的成骨潜力。在此培养期间,细胞分泌特别高水平的IL-8,MCP-1和VEGF,但不表达IL-2,IL-7,IL-17,嗜酸性粒细胞趋化因子,G-CSF和IFN-γ。这些发现应鼓励使用人类脐带血作为骨再生的潜在干细胞来源。

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