首页> 外文期刊>Chemistry: A European journal >A Synthetic Toolbox for the In Situ Formation of Functionalized Homo- and Heteropolysaccharide-Based Hydrogel Libraries
【24h】

A Synthetic Toolbox for the In Situ Formation of Functionalized Homo- and Heteropolysaccharide-Based Hydrogel Libraries

机译:用于功能化的均质和杂多糖基水凝胶库原位形成的合成工具箱

获取原文
获取原文并翻译 | 示例
           

摘要

A synthetic toolbox for the introduction of aldehydo and hydrazido groups into the polysaccharides hyaluronic acid, alginate, dextran, pullulan, glycogen, and carboxymethyl cellulose and their use for hydrogel formation is reported. Upon mixing differently functionalized polysaccharides derived from the same natural precursor, hydrazone cross-linking takes place, which results in formation of a hydrogel composed of one type of polysaccharide backbone. Likewise, hydrogels based on two different polysaccharide strands can be formed after mixing the corresponding aldehydo- and hydrazido-modified polysaccharides. A second line of these studies paves the way to introduce a biomedically relevant ligand, namely, the adhesion factor cyclic RGD pentapeptide, by using an orthogonal click reaction. This set of modified polysaccharides served to create a library of hydrogels that differ in the combination of polysaccharide strands and the degree of cross-linking. The different hydrogels were evaluated with respect to their rheological properties, their ability to absorb water, and their cytotoxicity towards human fibroblast cell cultures. None of the hydrogels studied were cytotoxic, and, hence, they are in principal biocompatible for applications in tissue engineering.
机译:报道了用于将醛基和酰肼基引入多糖透明质酸,藻酸盐,右旋糖酐,支链淀粉,糖原和羧甲基纤维素中的合成工具箱,以及它们在水凝胶形成中的用途。在混合衍生自相同天然前体的不同功能化多糖后,发生cross交联,这导致形成由一种类型的多糖主链组成的水凝胶。同样,在混合相应的醛基和酰肼基修饰的多糖后,可以形成基于两条不同多糖链的水凝胶。这些研究的第二条线为通过正交点击反应引入生物医学相关配体,即粘附因子环状RGD五肽铺平了道路。这组修饰的多糖用于创建水凝胶库,该库在多糖链的组合和交联度方面有所不同。评价了不同的水凝胶的流变性,吸水能力以及对人成纤维细胞培养的细胞毒性。所研究的水凝胶均无细胞毒性,因此,它们在组织工程中的应用主要具有生物相容性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号