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J Mater Sci Mater Med:仿生多孔丝素蛋白/双相磷酸钙支架用于骨组织再生

2018-12-23 MedSci MedSci原创

本研究旨在制备仿生多孔丝素蛋白(SF)/双相磷酸钙(BCP)支架,并评估其在骨组织再生中的表现。在体外研究了四种不同的含丝心蛋白支架(0,20,40和60%SF)的孔径,孔隙率,机械强度和生物相容性的差异。在接种MC3T3-E1细胞后,在大鼠模型中评估SF / BCP仿生支架的异位骨形成能力。 SEM和CT表明,与纯BCP组(0%SF)相比,SF/BCP支架的孔径和孔隙率与SF含量成正比,其中40

本研究旨在制备仿生多孔丝素蛋白(SF)/双相磷酸钙(BCP)支架,并评估其在骨组织再生中的表现。在体外研究了四种不同的含丝心蛋白支架(0,20,40和60%SF)的孔径,孔隙率,机械强度和生物相容性的差异。在接种MC3T3-E1细胞后,在大鼠模型中评估SF / BCP仿生支架的异位骨形成能力。

SEM和CT表明,与纯BCP组(0%SF)相比,SF/BCP支架的孔径和孔隙率与SF含量成正比,其中40%的SF和60%的SF组更适合细胞生长。SF/BCP支架的抗压强度大于纯BCP支架,且随SF含量的增加呈先上升后下降的趋势,其中SF组40%具有最大抗压强度(40.80 +) 0.68)MPa。SF/BCP支架具有良好的生物相容性,在电子显微镜下,细胞可以平滑地附着在支架上并在支架上繁殖。在加载成骨细胞后,它在大鼠模型中显示出优异的成骨能力。SF/BCP支架可以高度模拟天然骨形成的微环境,可以满足组织工程的要求。SF/BCP仿生多孔支架具有优异的物理性质和生物相容性。它可以高度模拟天然骨基质成分和微环境,并可以促进成骨细胞的粘附和增殖。

综上所述,该研究结果表明,SF/BCP支架在加载成骨细胞后具有良好的异位成骨作用,可满足组织工程中支架材料的要求,在临床应用中具有广阔的应用前景。

原始出处:

Liu B, Gao X, et al., Biomimetic porous silk fibroin/biphasic calcium phosphate scaffold for bone tissue regeneration. J Mater Sci Mater Med. 2018 Dec 19;30(1):4. doi: 10.1007/s10856-018-6208-4.

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    2018-12-25 hb2008ye
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