Experimental study of the antitumor effect of aurumacryl

Gold polyacrylate (aurumacryl) belonging to a new class of compounds for oncology — metal polyacrylates — was shown to exhibit strong antitumor activity. Aurumacryl causes 80—90% growth inhibition in vivo of murine solid tumors (Lewis lung carcinoma, Ca-755 adenocarcinoma, and Acatol adenocarcinoma) compared to the control and induces cell death in vitro in 60% of MCF-7 human breast carcinoma cells. Substantial changes in proliferation kinetics of the surviving fraction of tumor cells following treatment with aurumacryl were observed, which are related to the predominant accumulation (93%) of cells in the proliferative resting phase G₀ and a substantial decrease in the percentage of proliferating cells (7%). These data provide evidence that the cells that survive lose reproductive ability under treatment with aurumacryl.