| c-Src is one member of non-receptor tyrosine kinase protein family that has over expression and activation
in many human cancer cells. It has been shown that c-Src is implicated in various downstream signaling
pathways associated with EGFR-dependent signaling such as MAPK and STAT5 pathways. Transactivation of
EGFR by c-Src is more effective than EGFR ligands. To inhibit the c-Src expression, we used c-Src antisense
oligonucleotide complexed with PAMAM Denderimes. The effect of c-Src antisense oligonucleotide on HT29
cell proliferation was determined by MTT assay. Then, the expression of c-Src, EGFR and the genes related to
EGFR-depended signaling with P53 was applied by real time PCR. We used western blot analysis to elucidate the
effect of antisense on the level of c-Src protein expression. The results showed, c-Src antisense complexed with
PAMAM denderimers has an effective role in decrease of c-Src expression and EGFR-dependent downstream
genes. |