Nonviral therapeutic cell vaccine mediates potent antitumor effects
2006
Abstract Therapeutic vaccination of mice bearing melanoma tumors with our genetically modified tumor cells, via DOTAP/GM-CSF lipoplexes, results in >85% tumor growth inhibition. These fresh transfected cells (irradiated, frozen and thawed) are able to produce high amounts of GM-CSF transgene (>200 ng/10 6 cells/24 h). After vaccination, significant increases (>eight-fold) in specific antitumor membrane protein IgG1 and IgG2a are obtained only in groups vaccinated with GM-CSF-producing cells, where also the highest rates of tumor inhibition, and significantly delayed mice death ( P
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