J Dent Sci:钛表面上喷砂和纤连蛋白衍生的肽固定增加了成骨细胞样细胞的粘附和分化

2019-03-26 不详 网络

既往研究报道多种化学钛(Ti)表面改性可增强促进早期骨整合的细胞活性。本研究旨在确定用或不用纤连蛋白(FN)或FN衍生肽包被的喷砂Ti是否刺激成骨细胞样细胞粘附,扩散,增殖和分化。成骨细胞样细胞(MC3T3-E1)在固定有FN或FN衍生肽[GRGDSP(Gly-Arg-Gly-Asp-Ser),PHSRN(Pro-His-Ser-Arg-Asn)或GRGDSP / PHSRN]的喷砂Ti盘上培养。

既往研究报道多种化学钛(Ti)表面改性可增强促进早期骨整合的细胞活性。本研究旨在确定用或不用纤连蛋白(FN)或FN衍生肽包被的喷砂Ti是否刺激成骨细胞样细胞粘附,扩散,增殖和分化。

成骨细胞样细胞(MC3T3-E1)在固定有FN或FN衍生肽[GRGDSP(Gly-Arg-Gly-Asp-Ser),PHSRN(Pro-His-Ser-Arg-Asn)或GRGDSP / PHSRN]的喷砂Ti盘上培养。评估表面形貌,细胞形态,细胞粘附,细胞增殖,成骨相关基因和蛋白质表达的分析,碱性磷酸酶和矿化的茜素红染色。

结果显示,涂有FN或FN衍生肽的喷砂Ti增强细胞粘附和细胞增殖。然而,涂有FN或FN衍生的肽基团的Ti在细胞铺展中是相似的。与未涂覆的Ti基团相比,在肽修饰的Ti表面组中观察到成骨分化。FN和GRGDSP/PHSRN涂层增强了Runx2,骨钙蛋白和骨涎蛋白的基因和蛋白表达。Ti涂层组的碱性磷酸酶活性和基质矿化也明显增强。

总之,该研究结果表明,与未涂覆的喷砂Ti相比,涂有FN或FN衍生肽(GRGDSP/PHSRN)的喷砂Ti显著增强成骨细胞样细胞的粘附、增殖和分化。

原始出处:

Pramono S, Pugdee K, et al., Sandblasting and fibronectin-derived peptide immobilization on titanium surface increase adhesion and differentiation of osteoblast-like cells (MC3T3-E1). J Dent Sci. 2016 Dec;11(4):427-436. doi: 10.1016/j.jds.2016.07.004. Epub 2016 Nov 9.

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