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  • Title: Antitumor effects of 3,3',4,4',5,5'-hexahydroxystilbene in HL-60 human promyelocytic leukemia cells.
    Author: Saiko P, Horvath Z, Murias M, Handler N, Jaeger W, Erker T, Fritzer-Szekeres M, Szekeres T.
    Journal: Nucleosides Nucleotides Nucleic Acids; 2006; 25(9-11):1013-7. PubMed ID: 17065056.
    Abstract:
    Resveratrol (3,4',5-trihydroxystilbene, RV) exerts remarkable cytostatic and cytotoxic effects against a multitude of human cancer cell lines. Since the introduction of additional hydroxyl groups was supposed to increase the biological activity of RV, we have synthesized a number of polyhydroxylated stilbene analogues as potential antitumor agents. In this study, the activity of 3,3',4,4',5,5'-hexahydroxystilbene (M8) was investigated in HL-60 human promyelocytic leukemia cells. Employing a growth inhibition assay, incubation with M8 and RV resulted in IC50 values of 6.25 and 12 microM, respectively. Using a specific Hoechst/propidium iodide double staining method, we found that M8 was able to induce apoptosis in concentrations significantly lower than those of RV. In addition, M8 arrested cells in the S phase and totally depleted cells in the G2-M phase of the cell cycle (143% and 0% of control after treatment with 12.5 microM M8, respectively). We therefore believe that this promising agent deserves further preclinical and in vivo testing.
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