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Biocompatibility of electrospun cell culture scaffolds made from balangu seed mucilage/PVA composites

机译:由巴兰古籽粘液/PVA复合材料制成的静电纺丝细胞培养支架的生物相容性

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摘要

Abstract Synthesis of Balangu (Lallemantia royleana) seed mucilage (BSM) solutions combined with polyvinyl alcohol (PVA) was studied for the purpose of producing 3D electrospun cell culture scaffolds. Production of pure BSM nanofibers proved to be difficult, yet integration of PVA contributed to a facile and successful formation of BSM/PVA nanofibers. Different BSM/PVA ratios were fabricated to achieve the desired nanofibrous structure for cell proliferation. It is found that the optimal bead-free ratio of 50/50 with a mean fiber diameter of ≈180 nm presents the most desirable scaffold structure for cell growth. The positive effect of PVA incorporation was approved by analyzing BSM/PVA solutions through physiochemical assays such as electrical conductivity, viscosity and surface tension tests. According to the thermal analysis (TGA/DSC), incorporation of PVA enhanced thermal stability of the samples. Successful fabrication of the nanofibers is verified by FT-IR spectra, where no major chemical interaction between BSM and PVA is detected. The crystallinity of the electrospun nanofibers is investigated by XRD, revealing the nearly amorphous structure of BSM/PVA scaffolds. The MTT assay is employed to verify the biocompatibility of the scaffolds. The cell culture experiment using epithelial Vero cells shows the affinity of the cells to adhere to their nanofibrous substrate and grow to form continuous cell layers after 72 h of incubation.
机译:摘要 研究了巴兰古(Lallemantia royleana)种子粘液(BSM)与聚乙烯醇(PVA)联合制备三维静电纺丝细胞培养支架的方法。纯BSM纳米纤维的生产被证明是困难的,但PVA的整合有助于BSM/PVA纳米纤维的简单和成功的形成。制备了不同的BSM/PVA比率,以实现细胞增殖所需的纳米纤维结构。研究发现,平均纤维直径为≈180 nm时,最佳无珠比为50/50,是细胞生长最理想的支架结构。通过电导率、粘度和表面张力测试等物理化学测定法分析BSM/PVA溶液,证实了PVA掺入的积极作用。根据热分析(TGA/DSC),PVA的掺入增强了样品的热稳定性。通过傅立叶变换红外光谱验证了纳米纤维的成功制造,其中未检测到BSM和PVA之间的主要化学相互作用。通过XRD研究了静电纺丝纳米纤维的结晶度,揭示了BSM/PVA支架近乎无定形的结构。MTT测定用于验证支架的生物相容性。使用上皮Vero细胞的细胞培养实验显示细胞粘附在其纳米纤维底物上的亲和力,并在孵育72小时后生长形成连续的细胞层。

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