Abstract
The goal of this study was to enhance gene delivery and tumor cell transfection in vivo by using a combination of ultrasonication with complex nanoparticles consisting of two types of nanoparticles: PEI/DNA β-gal plasmid with highly positive zeta-potential and air-filled poly (lactic-co-glycolic acid) (PLGA) particles (with negative zeta-potential) manufactured in our laboratory. The PLGA/PEI/DNA nanoparticles were a colloid with positive zeta-potential and injected i.v. in nude mice with DU145 human prostate tumors. We found that the combination of PLGA/PEI/DNA nanoparticles with ultrasonication substantially enhanced tumor cell transfection in vivo. The overexpression of β-gal gene was evaluated histochemically and by Western blot analysis. At least an 8-fold increase of the cell transfection efficacy was obtained in irradiated tumors compared to non-irradiated controls, while little to no cell death was produced by ultrasonication.
Original language | English (US) |
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Pages (from-to) | 215-225 |
Number of pages | 11 |
Journal | Cancer Letters |
Volume | 261 |
Issue number | 2 |
DOIs | |
State | Published - Mar 18 2008 |
Keywords
- Gene delivery
- PEI
- PLGA nanoparticles
- Tumor
- Ultrasound
ASJC Scopus subject areas
- Oncology
- Cancer Research