Abstract
In this study, the total triterpenoids of raspberry fruit (TTRF) were prepared, and their effects on human hepatocellular carcinoma SMMC-7721 cells were investigated. SMMC-7721 cells were treated with TTRF with concentration of 0 (control), 50, 100, 200 and 400 μg/mL, respectively. The cell proliferation, cycle and apoptosis were detected. The reactive oxygen species (ROS) in cells and the expression levels of B-cell lymphoma-2 (Bcl-2) and B-cell lymphoma-2 associated X (Bax) in cells were determined. Results showed that, TTRF could obviously inhibit the proliferation of SMMC-7721 cells, arrest most cells in S and G2/M phases, and promote their apoptosis. In addition, TTRF could increase the ROS level, down-regulate the Bcl-2 protein expression and up-regulate the Bax protein expression in cells. In conclusion, cucurbitacin I has inhibitory effect on growth of SMMC-7721cells. The action mechanism may be related to its increasing ROS level and regulating of Bcl-2 and Bax expression in cells.
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