Effect of ERBB2 expression on invasiveness of glioma TJ905 cells

ObjectiveTo investigate the influence and possible mechanism of ERBB2 expression on the invasiveness of glioma cells.MethodsGlioma TJ905 cells were separated and cultured. ERBB2 shRNA and overexpressing vectors were constructed, which were then transfected. The ERBB2 expression was up-regulated or down-regulated. Changes of invasiveness of TJ905 cells were detected by Transwell assay, and the expressions of matrix metalloprotease (MMP)-2 and MMP-9 were measured by Western blot.ResultsERBB2 shRNA transfection vector could effectively inhibit expression of ERBB2; while ERBB2 overexpressing vector transfection could significantly improve the expression of ERBB2 in TJ905 cells. Transwell assay showed that when ERBB2 expression was down-regulated, the invasiveness of TJ905 cells was notably decreased; when ERBB2 expression was up-regulated, the invasiveness of TJ905 cells was markedly increased. Meanwhile, Western blot indicated that down-regulating ERBB2 inhibited the expression of MMP-2 and MMP-9, while up-regulating ERBB2 enhanced their expressions.ConclusionsERBB2 expression is closely related to the invasiveness of glioma TJ905 cells.