Abstract
Salvicine (a novel diterpenoid quinone compound) exhibited a marked antitumor activity on human solid tumor cell lines and BALB/c-nu human carcinoma xenografts in our earlier studies, and it has been chosen as a candidate anticarcinogenic compound in the preclinical research stage. The present study was undertaken in order to observe whether or not the antitumor effect of salvicine is associated with its ability to induce apoptosis. Our results show that salvicine is capable of inhibiting cell proliferation and inducing characteristic changes of apoptosis in both human leukemia K-562 and gastric carcinoma SGC-7901 cells. These effects are dose and time dependent. The results of this study strongly suggest that the antitumor effect of salvicine is associated with its ability to induce apoptosis. Meanwhile, this study also shows that the activity of salvicine against K-562 and SGC-7901 cells is similar with regards to both growth inhibition and apoptosis induction, further indicating that salvicine causes these particular effects on solid tumor cells.
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