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Thiol‐ene photoclick reaction: An eco‐friendly and facile approach for preparation of MPEG‐g‐keratin biomaterial

机译:硫酚-光点击反应:制备MPEG-g-角蛋白生物材料的一种生态友好且简便的方法

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摘要

Wool keratin is a natural material with excellent properties, which is considered as scaffold biomaterial for tissue engineering. Polyethylene glycol can improve the mechanical properties of keratin materials because of its excellent biocompatibility and plasticity. In the present work, poly (ethylene glycol) methyl ether methacrylate (MPEGMA) was grafted onto keratin by thiol‐ene photoclick reaction. The results of FTIR and SDS‐PAGE verified the successful reaction between MPEGMA and keratin. Compared with the keratin, circular dichroism and XRD results showed that the β‐sheet ratio increased in MPEG‐g‐keratin. Additionally, it can be found that the exposure of keratin hydrophobic amino acids increased quickly and the micelle size became larger due to the introduction of MPEG from the results of fluorescence spectroscopy and particle size analysis. The MPEG‐g‐ keratin was formed into a membrane to further study the application of the modified keratin. Compared with the keratin membrane, the flexibility and biocompatibility of modified keratin have been improved. This work provides an eco‐friendly and facile approach for preparation of the keratin biomaterials.
机译:羊毛角蛋白是一种具有优异性能的天然材料,被认为是用于组织工程的支架生物材料。聚乙二醇具有出色的生物相容性和可塑性,因此可以改善角蛋白材料的机械性能。在目前的工作中,聚(乙二醇)甲基丙烯酸甲酯(MPEGMA)是通过硫醇-烯光点击反应接枝到角蛋白上的。 FTIR和SDS-PAGE的结果证明了MPEGMA和角蛋白之间的成功反应。与角蛋白相比,圆二色性和XRD结果表明MPEG-g-角蛋白的β-折叠比增加。另外,由于荧光光谱法和粒度分析的结果,由于引入了MPEG,因此发现角蛋白疏水氨基酸的暴露迅速增加并且胶束尺寸变大。 MPEG-g-角蛋白被制成膜,以进一步研究改性角蛋白的应用。与角蛋白膜相比,改性角蛋白的柔韧性和生物相容性得到了改善。这项工作为制备角蛋白生物材料提供了一种生态友好且简便的方法。

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