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Functionalisation and surface modification of electrospun polylactic acid scaffold for tissue engineering

机译:用于组织工程的电纺聚乳酸支架的功能化和表面改性

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Repair or replacement of damaged tissues using tissue engineering technology is considered to be a fine solution for enhanced treatment of different diseases such as skin diseases. Although the nanofibers made of synthetic degradable polymers, such as polylactic acid (PLA), have been widely used in the medical field, they do not favour cellular adhesion and proliferation. To enhance cell adherence on scaffold and improve biocompatibility, the surface of PLA scaffold was modified by gelatin in our experiments. For electrospinning, PLA and gelatin were dissolved in hexafluoroisopropanol (HFIP) solvent at varying compositions (PLA:gelatin at 3:7 and 7:3). The properties of the blending nanofiber scaffold were investigated by Fourier transform infrared (FT-IR) spectroscopy and scanning electron microscopy (SEM). Modified PLA/gelatin 7/3 scaffold is more suitable for fibroblasts attachment and viability than the PLA or gelatin nanofiber alone. Thus fibroblast cultured on PLA/gelatin scaffold could be an alternative way to improve skin wound healing.
机译:使用组织工程技术修复或替换受损组织被认为是增强治疗各种疾病(例如皮肤病)的好方法。尽管由合成可降解聚合物(例如聚乳酸(PLA))制成的纳米纤维已在医学领域得到广泛使用,但它们不利于细胞粘附和增殖。为了增强细胞在支架上的粘附并改善生物相容性,在我们的实验中,用明胶修饰了PLA支架的表面。对于静电纺丝,将PLA和明胶以不同的组成(3:7和7:3的PLA:明胶)溶于六氟异丙醇(HFIP)溶剂中。通过傅立叶变换红外光谱(FT-IR)和扫描电子显微镜(SEM)研究了混合纳米纤维支架的性能。改性的PLA /明胶7/3支架比单独使用PLA或明胶纳米纤维更适合成纤维细胞的附着和生存。因此,在PLA /明胶支架上培养成纤维细胞可能是改善皮肤伤口愈合的另一种方法。

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