大豆甾醇糖苷及两亲性聚乙二醇对阳离子脂质体细胞转染与膜各向异性的影响

被引:2
作者
严文伟
费然
王文浩
齐宪荣
魏来
丛旭
王宇
机构
[1] 北京大学药学院药剂学系,北京大学人民医院肝病研究所,北京大学药学院药剂学系,北京大学药学院药剂学系,北京大学人民医院肝病研究所,北京大学人民医院肝病研究所,北京大学人民医院肝病研究所北京,北京,北京
关键词
阳离子脂质体; 转染; 膜流动性; 糖苷类; 聚乙烯二醇类;
D O I
10.19723/j.issn.1671-167x.2003.03.032
中图分类号
O657.3 [光化学分析法(光谱分析法)];
学科分类号
070302 ; 081704 ;
摘要
目的 :考察不同脂质体材料对阳离子脂质体细胞转染率和脂质体膜流动性的影响。方法 :合成美国FDA认可应用于人体给药的阳离子材料 3β [N (N′ ,N′ 二甲基胺乙基 )胺基甲酰基 ]胆固醇 (3β[N (N′,N′ dimethy laminoethane)carbamoyl]cholesterol,DC chol) ;以荧光素钠 (fluoresceinsodium ,SF)为荧光标记物 ,二棕榈酰磷脂酰胆碱 (dipalmitoylphosphatidylcholine,DPPC)、二油酰磷脂酰乙醇胺 (dioleoylphosphatidylethanolamine ,DOPE)和胆固醇 (cholesterol,ch)为辅佐膜材 ,分别制备DPPC/ch/DC chol阳离子脂质体、DOPE/ch/DC chol阳离子脂质体及大豆甾醇糖苷 (soybean derivedsterylglucoside ,SG)或聚乙二醇 -二硬脂酰磷脂酰乙醇胺 (polyethyleneglycol dis tearoylphosphatidylethanolamine ,PEG DSPE)表面修饰的阳离子脂质体 ,并制备DPPC/ch组成的中性脂质体。以HepG2 2 .2 .15为细胞模型观察不同脂质体处方对细胞转染率的影响 ;通过荧光偏振法考察不同脂质材料对脂质体膜流动性的影响。结果 :DC chol能显著增加脂质体对SF的包封率 (从 0 .6 4 %到的 74 .84 % )、细胞转染率 (从1.83%到 32 .2 9% )及脂质体膜的流动性。在阳离子脂质体处方中加入SG能显著提高阳离子脂质体的包封率 (从5 2 .6 0 %到
引用
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页码:324 / 328
页数:5
相关论文
共 7 条
[1]  
The cellular delivery of antisense oligonucleotides and ribozymes. Hughes MD,Hussain M,Nawaz Q,et al. Res Focus . 2001
[2]  
Delivery systems for antisense oligonucleotides. Garcia-Chaumont CH,Seksek O,Grzybowska J,et al. Pharmacology & Therapeutics . 2000
[3]  
A novel cationical liposome reagent for efficient transfection of mammalian Cells. Gao X,Huang L. Biochemical and Biophysical Research Communications . 1991
[4]  
Effects of lipid headgroup and packing stress on poly(ethylene glycol)-induced phospholipid vesicle aggregation and fusion. Yang Q,Guo Y,Li L. Biophysical Journal . 1997
[5]  
Formulation of liposomes with a soybean-derived sterylglucoside mixture and cholesterol for liver targeting. Shimizu K,Maitani Y,Takayama K. Biological and Pharmaceutical Bulletin . 1997
[6]  
Efficiency of liposomes surface-modified with soybean-derived sterylglucoside as a liver targeting carrier in HepG2 cells. Maitani Y,Kawano K,Yamada K,et al. Journal of Controlled Release . 2001
[7]  
Fusion of cationic liposomes with mammalian cells occurs after endocytosis. Wrobel I,Collins D. Biochemistry and Biophysics . 1995