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Alginate-PEGAc: a new mucoadhesive polymer.

机译:藻酸盐-PEGAc:一种新型的粘膜粘附聚合物。

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摘要

We have synthesized a novel mucoadhesive polymer, alginate-polyethylenglycol acrylate (alginate-PEGAc), in which an alginate backbone carries acrylated polyethylenglycol. This polymer combines the strength, simplicity and gelation ability of alginate with the mucoadhesion properties arising from the characteristics and acrylate functionality of PEG. The strong bonding to the mucus results from a combination of PEG's ability to interpenetrate the mucus surface and a Michael-type addition reaction between an acrylate end group on a polymer and the sulfide end group of the mucin-type glycoprotein. We have synthesized alginate-PEGAc, verified the formation of the desired product by nuclear magnetic resonance, demonstrated the lack of cytotoxicity, and evaluated the ability of this polymer to function as a novel mucoadhesive material for controlled drug release. Based on our findings we believe that modifying other polymers with PEG-acrylate can open the way for the development of many other multifunctional biomaterials for a variety of biotechnological and biomedical applications.
机译:我们已经合成了一种新型的粘膜粘附聚合物,藻酸盐-聚乙二醇丙烯酸酯(藻酸盐-PEGAc),其中藻酸盐骨架带有丙烯酸酯化的聚乙二醇。该聚合物将藻酸盐的强度,简单性和胶凝能力与由PEG的特性和丙烯酸酯官能团产生的粘膜粘附特性​​结合在一起。 PEG与粘液的牢固结合是PEG渗透粘液表面的能力与聚合物上丙烯酸酯端基与粘蛋白型糖蛋白的硫化物端基之间的迈克尔型加成反应的结合。我们已经合成了藻酸盐-PEGAc,通过核磁共振验证了所需产物的形成,证明了细胞毒性的缺乏,并评估了该聚合物作为新型药物控制药物释放的粘膜粘附材料的能力。根据我们的发现,我们相信用PEG-丙烯酸酯改性其他聚合物可以为开发用于多种生物技术和生物医学应用的许多其他多功能生物材料开辟道路。

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