MANUFACTURE AND EVALUATION OF CISPLATIN-LOADED THERMOSENSITIVE NANOPARTICLE
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摘要: 目的构建顺铂温敏纳米颗粒,表征其相关性质及不同温度下对肿瘤细胞生长抑制率.方法采用自由基共聚及开环聚合法合成聚N-异丙基丙烯酰胺-丙烯酰胺-D, L丙交酯,在水溶液中自发形成胶束结构包裹顺铂,测定其分子量分布、粒径、包封率、载药量、温敏特性及肿瘤细胞生长抑制率.结果空白载体粒径为(83.3±4.3) nm, 包药后载体粒径(133.4±17.8) nm, 比包药前增加了大约50 nm.载药量为3.8%, 包封率为35%.载药颗粒在单纯化疗时细胞抑制作用较小,加热后抑制作用明显增加(P<0.01), 与游离药物相近(P>0.05).结论顺铂温敏纳米颗粒具有较好的温度控释特性,为热靶向治疗提供了良好的载体.
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