Inhibitory effects of int-2 gene on the invasion and metastasis of oral cancer cells.

OBJECTIVE:The purpose of this study was to investigate the effects of int-2 transfection on the invasiveness and metastasis of oral cancer BcaCD885 cells, and to determine the relevant mechanisms of action. MATERIALS AND METHODS:High-purity int-2 eukaryotic expression plasmids were prepared and transfected using a modified cationic liposome-mediated transfection protocol. Nucleoside diphosphate kinase A expression before and after transfection was examined, as well as changes in cell invasiveness and metastasis capabilities. RESULTS:Int-2 was confirmed to be stably expressed post-transfection into oral cancer cells. Expression of int-2 in BcaCD885 cells was significantly different before and after transfection. The proportion of invasive cells were 70.3%±8.2% and 46.5%±5.7%, and the proportion of chemotaxis cells were 78.5%±7.9% and 49.6%±7.5%, in the in the control and experimental groups respectively. The adhesion capability of cells in the experimental group was also significantly reduced. CONCLUSIONS:Upregulation of int-2 expression can significantly inhibit the invasion and metastasis of BcaCD885 cells.

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