医药导报2019，Vol.38Issue(2)：238-243,6.DOI:10.3870/j.issn.1004-0781.2019.02.022
泊洛沙姆188修饰聚乙烯亚胺作为基因载体的体外评价
In Vitro Evaluation of Poloxamer 188 Modified Polyethyleneimine as Gene Vectors
摘要
Abstract
Objective To modify polyethyleneimine (PEI) by using Poloxamer 188 (P188) , and evaluate its related feature as carriers of genes in vitro. Methods PEI was modified through conjugating one hydroxyl group of P188 to the amino group of PEI by carbonate method. Structural analysis of synthesized polymer was performed by using 1H-NMR. The particle size and Zeta potential of synthesized polymer /DNA complexes were measured. The cytotoxicity of the complexes was evaluated using MTT method in MCF-7 cells, HeLa cells and HepG2 cells. The pGL3-lus was used as a reporter gene, and the transfection efficiency of complexesat HeLa cells was evalutated by measuring activity of luciferase. Results The result of 1H-NMR showed the purity of these synthesized polymers was high. The particle size of complexes were decreased with the increment of N /P ratios. The Zeta potential of complexes increased with the increment of N /P ratios. The cytotoxicity of the complexes increased with the increment of N /P ratios. The synthesized polymers showed lower cytotoxicity than unmodified PEI. The new synthesized polymers had maintained the high transfection efficiency at high N /P ratios. In particular, the optimal transfection efficiency of (P188) 1- PEI (N /P = 24) was significantly higher than that of PEI (N /P = 6) . Conclusion The P188 modifed PEI can serve as a effective non-viral gene carriers to transfect Hela cells.关键词
泊洛沙姆 P188/聚乙烯亚胺/基因载体/细胞毒性/基因转染Key words
Poloxamer 188/Polyethyleneimine/Gene vectors/Cytotoxicity/Gene transfection分类
医药卫生引用本文复制引用
鄂晓,游庆霞,陈效,尹东锋..泊洛沙姆188修饰聚乙烯亚胺作为基因载体的体外评价[J].医药导报,2019,38(2):238-243,6.基金项目
新疆自治区科技厅自然科学基金资助项目(2015211C242) （2015211C242）
