Interleukin 10 (IL-10) is a potent immunosuppressive cytokine with an antit
umor activity. The effect of IL-10 on tumor growth was tested in murine mel
anoma cells manipulated by gene transfer to secrete IL-10. In mice bearing
B16(F10) tumors expressing IL-10 tumor growth was decreased depending on th
e amount of secreted IL-10.