Cytotoxicity of Gold and Silver Polyacrylates for Tumor Cells

The study of the cytotoxic activity of two polyacrylic acid-based compounds containing gold (aurumacryl) and silver (argacryl) against a panel of human tumor cell cultures (769-P, Caki-2, SK-RC-1 renal carcinoma lines, BT-474 breast carcinoma, NCI-H211 small cell lung carcinoma) was carried out in vitro. The results obtained were analyzed in comparison with the data established earlier for other cell cultures (MCF-7 breast carcinoma, A-549 lung carcinoma, HCT116 colon carcinoma, Mel Me melanoma). The IС50 cytotoxic index of drugs for the nine tested tumor cell lines ranged from 0.8 to 5.2 µg/ml for aurumacryl and from 0.2 to 14.4 µg/ml for argacryl (in terms of gold and silver content, respectively), varying depending on the type of tumor. Significant differences have been found in the spectra of the lethal effect of aurumacryl and argacryl against tumor cells of various natures.