Microbubble-enhanced ultrasound exposure improves gene transfer in vascular endothelial cells

查看全文 作　　者：Fang [1]Nie;Hui-Xiong [1]Xu;Qing [1]Tang;Ming-De [2]Lu

机构地区：[1]Department of Medical Ultrasonics, First Affiliated Hospital, Sun Yat-Sen University,Guangzhou 510080, Guangdong Province, China;[2]Department of Hepatobiliary Surgery, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080,Guangdong Province, China

出　　处：《World Journal of Gastroenterology》索引2006年第12卷第46期,共6页

基　　金：Supported by grants from the Nationl Natural Scientific Foundation of China, No.30300082, 30470467, and Scientific Foundation Committee of Guangdong Province, China, No.04009360 摘　　要：AIM: To explore the effects of ultrasound exposure combined with microbubble contrast agent (SonoVue) on the permeability of the cellular membrane and on the expression of plasmid DNA encoding enhanced green fluorescent protein (pEGFP) transfer into human umbilical vein endothelial cells (HUVECs). METHODS: HUVECs with fluorescein isothiocyanate- dextran (FD500) and HUVECs with pEGFP were exposed to continuous wave (1.9 MHz, 80.0 mW/cm2) for 5 min, with or without a SonoVue. The percentage of FD500 taken by the HUVECs and the transient expression rate of pEGFP in the HUVECs were examined by fluorescence microscopy and flow cytometry, respectively. RESULTS: The percentage of FD500-positive HUVECs in the group of ultrasound exposure combined with SonoVue was significantly higher than that of the group of ultrasound exposure alone (24.0% ± 5.5% vs 66.6% ± 4.1%, P < 0.001). Compared with the group of ultrasound exposure alone, the transfection expression rate of pEGFP in HUVECs was markedly increased with the addition of SonoVue (16.1% ± 1.9% vs 1.5% ± 0.2%, P < 0.001). No statistical significant difference was observed in the HUVECs survival rates between the ultrasound group with and without the addition of SonoVue (94.1% ± 2.3% vs 91.1% ± 4.1%).CONCLUSION: The cell membrane permeability of HUVECs and the transfection efficiency of pEGFP into HUVECs exposed to ultrasound are significantly increased after addition of an ultrasound contrast agent withoutobvious damage to the survival of HUVECs. This non- invasive gene transfer method may be a useful tool for clinical gene therapy of hepatic tumors. 关键词：微泡超声暴露转基因脐静脉上皮细胞细胞膜质粒表达绿色荧光蛋白

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Microbubble-enhanced ultrasound exposure improves gene transfer in vascular endothelial cells

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