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23/10/2012 (Added to site)
Author(s): Hargrave, B.; Downey, H.; Strange Jr., R.; Murray, L.; Cinnamond, C.; Lundberg, C.; Israel, A.; Chen, Y. J.; Marshall Jr., W.; Heller, R.

Electroporation-mediated gene transfer directly to the swine heart

Journal: Gene Therapy, ? (2012), pp. 1-7
DOI: 10.1038/gt.2012.15
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Abstract: In vivo gene transfer to the ischemic heart via electroporation holds promise as a potential therapeutic approach for the treatment of heart disease. In the current study, we investigated the use of in vivo electroporation for gene transfer using three different penetrating electrodes and one non-penetrating electrode. The hearts of adult male swine were exposed through a sternotomy. Eight electric pulses synchronized to the rising phase of the R wave of the electrocardiogram were administered at varying pulse widths and field strengths following an injection of either a plasmid encoding luciferase or one encoding green fluorescent protein. Four sites on the anterior wall of the left ventricle were treated. Animals were killed 48 h after injection and electroporation and gene expression was determined. Results were compared with sites in the heart that received plasmid injection but no electric pulses or were not treated. Gene expression was higher in all electroporated sites when compared with injection only sites demonstrating the robustness of this approach. Our results provide evidence that in vivo electroporation can be a safe and effective non-viral method for delivering genes to the heart, in vivo.


Keywords: electroporation    gene delivery    heart    in vivo    swine   

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