NEW MACROPHAGES, PROCESS FOR PREPARING THE SAME AND THEIR USE AS ACTIVE SUBSTANCES OF PHARMACEUTICAL COMPOSITIONS

摘要

The invention relates to macrophages which have at least one of the following properties: their cytotoxic activity without IFN- gamma is increased by about 20 to 30 % with respect to standard macrophages, and is preferably of about 70 %; their cytotoxic activity with IFN- gamma is increased by about 20 to about 40 % with respect to standard macrophages, and is preferably of about 93 %; the extension of the deactivation of the cytotoxic activity in reply to an activation of IFN- gamma is in a ratio such that after 60h of activation with IFN- gamma , the cytotoxic activity is higher than or equal to 30 %, preferably of about 55 %, compared to the maximum cytotoxic activity presented by the macrophages due to IFN- gamma activation, with said cytotoxic activity being measured as the percentage of inhibition of 3-H thymidine incorporation by target tumoral cells, particularly U 937 cells.