Fig. 5.
The combination of Wnt7a overexpression and irradiation induced the apoptosis in H1650 and A549 NSCLC cell lines through the mitochondrial pathway. The expression of PARP, caspase-3, caspase-7, caspase-9, Bcl-2, Bax and cytochrome c were determined by western blot analysis. Representative immunoblots by transfection with Wnt7a and/or irradiation (4 Gy). The expression of PARP, caspase-3, caspase-7, caspase-9, Bax and cytochrome c were more prominent with the combination of Wnt7a and irradiation than with Wnt7a overexpression or irradiation alone. The expression of Bcl-2 was suppressed with the combination of Wnt7a and irradiation than with Wnt7a overexpression or irradiation alone. GAPDH was used as a loading control.