One-pot controlled synthesis of biodegradable and biocompatible co-polymer micelles
作者:Aram Omer Saeed、Sabrina Dey、Steven M. Howdle、Kristofer J. Thurecht、Cameron Alexander
DOI:10.1039/b821736j
日期:——
A facile route to biocompatible poly(lactic acid-co-glycolic acid)-co-poly(ethyleneglycolmethacrylate) (PLGA–PEGMA) block co-polymers is described utilising a combination of ring-opening polymerisation (ROP) and reversible addition fragmentation transfer (RAFT) methods. A series of PLGA–PEGMA polymers varying in co-monomer content and block length were synthesised with low polydispersities. All the block co-polymers formed micelles in aqueous solution as shown by dynamic light scattering, while critical micelle concentrations were found to be in the micromolar range. The polymer micelles were able to encapsulate model drugs (carboxyfluorescein and fluorescein isothiocyanate) and selected co-polymer micelles incubated with 3T3 fibroblasts as a model cell line were rapidly taken up as indicated by fluorescence microscopy assays. The combination of the polymer chemistries opens the way to highly flexible syntheses of micellar drug carrier systems .
描述了一种利用开环聚合(ROP)和可逆加成断裂转移相结合的生物相容性聚(乳酸-共-乙醇酸)-共聚(乙二醇甲基丙烯酸酯)(PLGA-PEGMA)嵌段共聚物的简便途径。 RAFT)方法。合成了一系列具有低多分散性的共聚单体含量和嵌段长度不同的 PLGA-PEGMA 聚合物。如动态光散射所示,所有嵌段共聚物在水溶液中形成胶束,同时发现临界胶束浓度在微摩尔范围内。聚合物胶束能够封装模型药物(羧基荧光素和异硫氰酸荧光素),并且如荧光显微镜测定所示,与3T3成纤维细胞一起孵育的选定共聚物胶束作为模型细胞系被快速吸收。聚合物化学的结合为胶束药物载体系统的高度灵活的合成开辟了道路。