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首页> 外文期刊>Stem cells international >Comparisons of Mouse Mesenchymal Stem Cells in Primary Adherent Culture of Compact Bone Fragments and Whole Bone Marrow
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Comparisons of Mouse Mesenchymal Stem Cells in Primary Adherent Culture of Compact Bone Fragments and Whole Bone Marrow

机译:小鼠骨髓间充质干细胞在紧贴骨碎片和整个骨髓的原代贴壁培养中的比较

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摘要

The purification of mouse bone marrow mesenchymal stem cells (BMSCs) by using the standard method of whole bone marrow adherence to plastic still remains ineffective. An increasing number of studies have indicated compact bone as an alternative source of BMSCs. We isolated BMSCs from cultured compact bone fragments and investigated the proliferative capacity, surface immunophenotypes, and osteogenic and adipogenic differentiations of the cells after the first trypsinization. The fragment culture was based on the fact that BMSCs were assembled in compact bones. Thus, the procedure included flushing bone marrow out of bone cavity and culturing the fragments without any collagenase digestion. The cell yield from cultured fragments was slightly less than that from cultured bone marrow using the same bone quantity. However, the trypsinized cells from cultured fragments exhibited significantly higher proliferation and were accompanied with more CD90 and CD44 expressions and less CD45 expression. The osteogenic and adipogenic differentiation capacity of cells from cultured fragments were better than those of cells from bone marrow. The directly adherent culture of compact bone is suitable for mouse BMSC isolation, and more BMSCs with potentially improved proliferation capacity can be obtained in the primary culture.
机译:通过使用整个骨髓对塑料的粘附的标准方法纯化小鼠骨髓间充质干细胞(BMSC)仍然无效。越来越多的研究表明,致密骨可以作为BMSC的替代来源。我们从培养的致密骨碎片中分离了骨髓间充质干细胞,并研究了第一次胰蛋白酶消化后细胞的增殖能力,表面免疫表型以及成骨和成脂分化。碎片培养基于这样的事实,即骨髓间充质干细胞在紧密的骨头中组装。因此,该程序包括将骨髓冲洗出骨腔并在不进行任何胶原酶消化的情况下培养片段。在相同骨量的情况下,培养片段的细胞产量略低于培养骨髓的细胞产量。但是,来自培养片段的胰蛋白酶消化的细胞表现出明显更高的增殖,并伴随着更多的CD90和CD44表达以及更少的CD45表达。培养片段中细胞的成骨和成脂分化能力要好于骨髓细胞。紧密骨的直接粘附培养物适用于小鼠BMSC分离,并且在原代培养物中可以获得更多具有潜在改善的增殖能力的BMSC。

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