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Updated: Jul 27, 2026

DNA Vector-based RNA Interference to Study Gene Function in Cancer
Published on: June 4, 2012
Cytokine gene therapy for cancer with naked DNA
M Nishitani1, T Sakai, H Kanayama
1Department of Urology, University of Tokushima School of Medicine, Tokushima, Japan. masaaki@clin.med.tokushima-u.ac.jp
Abstract:
Plasmid DNA vectors (naked DNA) can easily be purified and transferred in vivo by intramuscular or intradermal injection. Naked DNA is stable in vivo, and long-term expression of the encoded protein is seen without chromosomal integration. Gene gun-mediated delivery of an expression plasmid is slightly more complicated but more efficient. These techniques have been applied to DNA vaccination or cytokine gene therapy for various diseases, including infections, autoimmune disorders, and cancer. We review cytokine gene therapy for cancer with naked DNA in animal models and present our preliminary data on gene gun-mediated in vivo transfection with the interleukin-12 gene in a murine renal cancer model. Because of its safety, simplicity, and low cost, cytokine gene therapy with naked DNA may become an important cancer treatment.
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