Abstract
To investigate the therapeutic effect of cationic liposome-mediated interleukin-12 gene delivery on established murine melanoma in vivo. The lipofectin encapsulated pCmIL-12 plasmid was given to C57BL/6 mice on the day 3,5,7,9 after inoculation of B16 melanoma cells. The tumor size, the survival time of mice and the NK cell activity were observed. The pCmIL-12 plasmid coupled with cationic liposome inhibited the tumor growth and improved the survival of mice bearing established melanoma. The activity of NK cells was also enhanced after interleukin-12 gene delivery in vivo. Cationic liposome-mediated interleukin-12 gene delivery has significantly therapeutic effects on mice melanoma in vivo.
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