Knockdown of FOXO3a causes VHL expression to be reduced.
A, knockdown of FOXO3a by two sets of FOXO3a shRNA in HEK293T cells was confirmed by semiquantitative real-time RT-PCR assays. Luciferase shRNA was used as a control. B, knockdown of FOXO3a in HEK293T caused VHL expression to be reduced. C, knockdown of FOXO3a by two sets of FOXO3a shRNA in H1299 cells was confirmed by semiquantitative real-time RT-PCR assays. Luciferase shRNA was used as a control. D, knockdown of FOXO3a in H1299 cells caused VHL expression to be reduced. E, knockdown of FOXO3a resulted in reduction of endogenous pVHL and induction of endogenous HIF-1α in HEK293T cells, as confirmed by Western blotting assays. F, knockdown of FOXO3a resulted in reduction of endogenous pVHL and induction of endogenous HIF-1α in H1299 cells, as confirmed by Western blotting assays.