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OALib Journal期刊
ISSN: 2333-9721
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聚乙二醇-聚(乳酸-碳酸酯)-紫杉醇纳米胶束对SKOV3卵巢癌的抑制作用
DOI: 10.3724/SP.J.1105.2012.12083, PP. 915-922
Keywords: 卵巢癌,靶向,胶束,聚乙二醇-聚(乳酸-碳酸酯),叶酸,紫杉醇
Abstract:
制备了2种两亲性生物降解嵌段共聚物聚乙二醇-聚(乳酸-碳酸酯),进而与紫杉醇和叶酸共价键合,形成高分子-紫杉醇键合物和高分子-叶酸键合物,将它们共组装成复合纳米胶束,直径约50nm,含紫杉醇27wt%,含叶酸1.4wt%.培养了人卵巢癌SKOV3细胞,采用四氮唑(MTT)比色法、流式细胞术(FCM)证明了市售紫杉醇(Taxol)、紫杉醇胶束(M(PTX))及叶酸靶向紫杉醇胶束(FA-M(PTX))在10μg/mL浓度下对SKOV3细胞生长有明显抑制作用,并且M(PTX)和FA-M(PTX)优于Taxol.构建了皮下卵巢癌balb/c荷瘤裸鼠动物模型,考察了Taxol,M(PTX)和FA-M(PTX)对肿瘤生长的抑制能力.在20mg/kg的剂量下,体外测量的肿瘤体积、9天观察的瘤体重量以及动物的生存期数据都表明,Taxol,M(PTX)和FA-M(PTX)三者都能抑制SKOV3肿瘤的生长,抑制能力的顺序为Taxol
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