Small:PMCP功能化的PCL不仅可以抗菌还可促进成骨

2019-09-03 不详 网络

可生物降解的聚己内酯(PCL)已广泛用作组织工程中的支架材料。然而,PCL表面是疏水性的并且吸附非特异性蛋白质。使用亲水部分的一些传统防污修饰已经成功,但是会抑制细胞粘附,这对于组织工程来说不是理想的。通过表面引发的原子转移自由基聚合,用生物激发的两性离子聚[2-(甲基丙烯酰氧基)乙基胆碱磷酸酯](PMCP)修饰PCL表面,通过磷酸胆碱(CP,PMCP)和磷酸胆碱之间的独特相互作用改善细胞粘附(P

可生物降解的聚己内酯(PCL)已广泛用作组织工程中的支架材料。然而,PCL表面是疏水性的并且吸附非特异性蛋白质。使用亲水部分的一些传统防污修饰已经成功,但是会抑制细胞粘附,这对于组织工程来说不是理想的。

通过表面引发的原子转移自由基聚合,用生物激发的两性离子聚[2-(甲基丙烯酰氧基)乙基胆碱磷酸酯](PMCP)修饰PCL表面,通过磷酸胆碱(CP,PMCP)和磷酸胆碱之间的独特相互作用改善细胞粘附(PC,在细胞膜上)。表面改性后,PCL表面的亲水性显著增强。由于PMCP的两性离子性质,PCL-PMCP表面减少非特异性蛋白质吸附(例如,牛血清白蛋白高达91.7%)。骨髓间充质干细胞在修饰表面上的粘附和增殖明显改善,并且即使不添加任何促进成骨的补充物也检测到成骨分化体征。此外,PCL-PMCP膜在降解的早期阶段更稳定。

因此,PMCP功能化的PCL表面促进细胞粘附和成骨分化,还可防止细菌粘附,在组织工程中显示出巨大的潜力。

原始出处:

Chen X, Lin Z, et al., Zwitterionic PMCP-Modified Polycaprolactone Surface for Tissue Engineering: Antifouling, Cell Adhesion Promotion, and Osteogenic Differentiation Properties. Small. 2019 Aug 25:e1903784. doi: 10.1002/smll.201903784.

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    2019-09-05 膀胱癌
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    2019-09-05 zhaojie88
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    2019-09-05 江川靖瑶