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首页> 外文期刊>RSC Advances >Titanium discs coated with 3,4-dihydroxy-l-phenylalanine promote osteogenic differentiation of human bone mesenchymal stem cells in vitro
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Titanium discs coated with 3,4-dihydroxy-l-phenylalanine promote osteogenic differentiation of human bone mesenchymal stem cells in vitro

机译:涂有3,4-二羟基-1-苯丙氨酸的钛圆盘可在体外促进人骨间充质干细胞的成骨分化

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The bioinspired material 3,4-dihydroxy- L -phenylalanine (DOPA) is commonly used as a basic layer in surface modification for osteogenesis; however, its effects on bone remodeling and the underlying mechanisms remain unclear. Here, we investigated the effect of DOPA-coated surfaces on human bone marrow-derived mesenchymal stem cells in vitro . Cells cultured on DOPA-modified titanium discs exhibited enhanced cellular adhesion and spreading compared with cells on non-treated surfaces. Moreover, DOPA-coating promoted greater cell proliferation and osteogenic differentiation, as determined using cell counting kit-8 (CCK-8) assay, alkaline phosphatase activity test and quantitative mineralization measurements. Furthermore, microarray analysis revealed that genes participating in focal adhesion were upregulated on DOPA-coated surfaces. Our results indicate that the application of a simple DOPA coating can promote osteogenic differentiation of osteoprogenitor cells, improving new bone formation and bone remodeling around implantable devices in tissue engineering.
机译:受生物启发的材料3,4-二羟基-L-苯丙氨酸(DOPA)通常用作骨形成的表面修饰的基础层。然而,其对骨重塑的作用及其潜在机制尚不清楚。在这里,我们研究了DOPA涂层表面在体外对人骨髓来源的间充质干细胞的影响。与未处理表面上的细胞相比,在DOPA修饰的钛圆片上培养的细胞显示出增强的细胞粘附性和扩散性。此外,如使用细胞计数试剂盒8(CCK-8)测定,碱性磷酸酶活性测试和定量矿化测量所确定的,DOPA涂层促进了更大的细胞增殖和成骨分化。此外,微阵列分析表明参与粘着斑的基因在涂有DOPA的表面上调。我们的结果表明,简单的DOPA涂层的应用可以促进骨祖细胞的成骨分化,改善组织工程中可植入设备周围的新骨形成和骨重塑。

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