PEG表面修饰硬脂酸脂质纳米粒的制备与体外细胞摄取

被引:9
作者
王杰
张强
索中军
陈大兵
魏树礼
机构
[1] 北京大学医学部药剂系!北京
[2] 北京大学医学部环境卫生系!北京
关键词
硬脂酸; 纳米粒; 表面修饰;
D O I
10.16438/j.0513-4870.2000.08.015
中图分类号
R94 [药剂学];
学科分类号
100602 ; 100702 ;
摘要
目的 研究不同分子量聚乙二醇 [poly(ethyleneglycol) ,PEG]表面修饰的硬脂酸脂质纳米粒的制备方法及体外细胞摄取的情况。方法 以亲脂端为硬脂基 ,亲水端为不同链长度PEG的非离子性表面活性剂 ,用“乳化蒸发 低温固化”的方法制备硬脂酸纳米粒。以小鼠腹腔巨噬细胞为细胞模型做体外细胞吞噬实验。结果 用Brij 78,Myrj5 3和Myrj5 9为表面活性剂制备了粒径分别为 (16 2 0± 6 7 4)nm ,(5 0 2± 2 8 9)nm和 (32 6 8± 195 2 )nm的纳米粒。体外细胞摄取实验证明 ,各种纳米粒相对于硬脂酸溶液均可增加巨噬细胞对硬脂酸的摄取 ,其中以Myrj5 9组摄取最少 ;在样品中加入小鼠血浆可以增加巨噬细胞对硬脂酸纳米粒的摄取。结论 用“乳化蒸发 低温固化”的方法可以制备PEG表面修饰的硬脂酸纳米粒 ;表面修饰PEG链的长度可以影响硬脂酸纳米粒体外细胞的摄取。
引用
收藏
页码:622 / 625
页数:4
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