کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1761399 1019645 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancement Effect of Ultrasound-Induced Microbubble Cavitation on Branched Polyethylenimine-Mediated VEGF165 Transfection With Varied N/P Ratio
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
Enhancement Effect of Ultrasound-Induced Microbubble Cavitation on Branched Polyethylenimine-Mediated VEGF165 Transfection With Varied N/P Ratio
چکیده انگلیسی
One isoform of the vascular endothelial growth factor, VEGF165, has been reported to be a dominant mediator and regulator of angiogenic process, which plays an important role in treating cardiovascular diseases and chronically ischemic wounds. Branched polyethylenimine (bPEI) has been widely used as a non-viral delivery vector for gene therapy. Although bPEI-mediated DNA transfection efficiency can be raised by increasing the PEI nitrogen:DNA phosphate (N/P) ratio, cytotoxicity increases as well. In this study, the enhancement effect of microbubble inertial cavitation (IC) on bPEI-mediated VEGF165 transfection was investigated, in an effort to optimize transfection efficiency using low N/P ratios. HEK 293T cells, mixed with bPEI:VEGF165 complexes, were exposed to 1-MHz ultrasound pulses. The results show that: (1) IC activity induced by microbubble destruction can be quantified as an IC “dose” (ICD) and will increase with increasing acoustic driving pressure; (2) larger sonoporation pores can be generated by increasing ICD; (3) the transfection efficiency can be enhanced by increasing ICD until reaching a saturation level; and (4) microbubble IC activity has less cytotoxicity than bPEI, although a combinatorial effect of microbubble IC activity and bPEI could be observed on cell viability. The results suggest that, with appropriate ultrasound parameters, it is possible to optimize bPEI-mediated VEGF transfection efficiency using relatively low N/P ratios by employing ultrasound-induced microbubble inertial cavitation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 39, Issue 1, January 2013, Pages 161-171
نویسندگان
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