药物研究
ZHANG Yanxin;SONG Wengang;GAO Fenglan
2013, 32(5): 583-585.
ObjectiveTo explore antitumor effect of emodin on nude mice with human colon cancer xenografts, and VEGFC and MMP9 expression.MethodsThe human colon cancer xenografts model in nude mice were established and the mice were randomly divided into 5 groups with 10 mice in each.The emodin group were injected daily with emodin at doses of 50,100 and 150 mg8226;kg-1, and the positive control group was injected daily with 5Fu at the dose of 20 mg8226;mg-1 while the positive control group was injected daily with normal saline.The tumor inhibition rate was observed and apoptosis index was detected by TUNEL, the expression of matrix metalloproteinase (MMP)9 and vascular endothelial growth factor (VEGF)C were investigated by immunohistochemical analysis.ResultsCompared with the model group,the tumor volume, tumor mass, tumor inhibition rate and apoptosis index of each dose group were significantly decreased(P<0.05, P<0.01), and the expression of VEGFC and MMP9 was lowered at various degree.VEGFC expression in the medium and high dose of emodin group was significantly weaker(0.68±0.36),(0.22±0.41) than that in the model group(2.11±0.45)(P<0.05, P<0.01) and MMP9 expression(1.11±0.41),(0.38±0.44)was significantly lower than that in the model group(2.31±0.39) (P<0.05, P<0.01).ConclusionEmodin effectively inhibits tumor growth, the mechanism of which may be related to the induction of apoptosis and inhibition of VEGFC and MMP9 expression.