Abstract
Berberine and evodiamine, two kinds of alkaloids, have been reported to show many activities. In the present paper, inhibitory activities of the two compounds and their mixtures on human hepatocellular carcinoma SMMC-7721 cells were investigated, and the inhibitory rates, apoptosis, cell cycle distribution and tumor necrosis factor-alpha (TNF-alpha) were all tested and described. The results indicate that the mixtures of the two compounds showed the highest inhibition effect (50.00%) as compared with berberine and evodiamine used individually (20.24% and 16.33%, respectively) over 48 h. Through fluorescence microscope and flow cytometry (FCM) analysis, the cell apoptosis and cell cycle distribution of SMMC-7721 induced by the synergy of the two compounds was made evident. Furthermore, the TNF-alpha value in the mixture treated group was much higher (p<0.05) than in the other two groups. Thus, the combined use of berberine and evodiamine could significantly enhance the apoptosis of SMMC-7721 cells, which will be useful to further anti-cancer therapy and research.
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