中德临床肿瘤学杂志（英文版）2008，Vol.7Issue(7)：424-428,5.
脂膜微泡对超声介导裸鼠移植瘤EGFP基因转染的影响
Effects of lipid shell microbubble on ultrasound mediated EGFP gene delivery to transplanted tumors:initial experience
摘要
Abstract
Objective:To investigate the feasibility of ultrasound (US) mediated enhanced green fluorescent protein (EGFP)gene delivery in subcutaneous transplanted tumors of human cervical carcinoma (Hela) and the contribution of lipid shell microbubble (LSMB) on gene transfection.Methods:LSMB and plasmid were injected into nude mice by tail vein followed local US irradiation (P+LSMB+US group).US exposure parameter was set at 2.0 W/cm2,2 min,duty cycle 20%.EGFP expression was evaluated by imaging for 7 days.Nude mice undergoing plasmid injection alone (P group),plasmid injection and US exposure (P+US group),plasmid and LSMB injection (P+LSMB group) were used as controls.Frozen section and histological examinations were conducted.Expression of EGFP was scored.Kinetics of protein expression post transfection and localization in vivo were evaluated.Results:Plasmid injection with LSMB plus US exposure strongly increased gene transfer efficiency.Strong EGFP expression was mainly seen in LSMB+P+US group.It was significantly higher than any of the following groups,P group,US+P group,or LSMB+P group (P＜0.01).In vivo expression level of post-US 3 days was significantly higher than any other time points (P＜0.01).There was not significant expression level of EGFP in other organs or tissues regardless of US exposure.No tissue damage was seen histologically.Conclusion:The combination of LSMB and US exposure could effectively transfer plasmid DNA to transplanted tumors without causing any apparently adverse effect.LSMB could be effective as a non-viral vector system in in vivo gene delivery.It would be a safe gene delivery method and provide an alternative to current clinical gene therapy.关键词
ultrasound/sonoporation/microbubble/gene transfection/non-viral vectorKey words
ultrasound/sonoporation/microbubble/gene transfection/non-viral vector分类
医药卫生引用本文复制引用
Zhiyi Chen,Mingxing Xie,Xinfang Wang,Qing Lv,Shangwei Ding..脂膜微泡对超声介导裸鼠移植瘤EGFP基因转染的影响[J].中德临床肿瘤学杂志（英文版）,2008,7(7):424-428,5.基金项目
Supported by a grant from the National Natural Sciences Foundation of China (No.30670548). （No.30670548）
