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Inhibitory effects of salidroside on MCF-7 breast cancer cells . | LitMetric
Objective : We investigated the antitumor effects of salidroside and preliminarily examined its underlying mechanisms by establishing a nude mouse model bearing MCF-7 breast cancer cell xenografts.Methods : The mice were grouped and intraperitoneally injected with salidroside, paclitaxel, or physiological saline. Tumor samples were weighed, and immunohistochemical staining with hematoxylin and eosin and anti-CD34 antibody was performed. Tumor cell apoptosis was observed using the terminal deoxynucleotidyl transferase deoxyuridine dUTP nick end labeling assay. Bcl-1, p53, Bax, and caspase 3 expression in tumor tissues was determined via western blotting.Results : The tumor inhibition rate of high-dose salidroside was 75.16%, which was significantly higher than the rates for paclitaxel and saline. A tumor tissue pathology analysis revealed that high-dose salidroside inhibited tumor cell proliferation and promoted tumor cell apoptosis. Western blotting revealed that Bcl-2 and p53 expression were significantly lower in the salidroside group than in the other groups, whereas Bax and caspase 3 (17 kDa) expression were increased.Conclusions : Salidroside was more effective than paclitaxel in inhibiting tumor growth in MCF-7 breast cancer cell-bearing nude mice. The mechanism of action may involve Bcl-2 and p53 downregulation and Bax and caspase 3 upregulation, thereby increasing proapoptotic factor expression and inducing tumor cell apoptosis.
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