Figure 5.
MKK6 activates NAG-1 promoter in a p38 kinase-dependent mechanism. A, PC-3 cells were cotransfected with NAG-1 promoter reporter plasmid (−966/70) and pcDNA3.1-lacZ or pcDNA3-MKK6b(E). As an internal control, the phRL-null vector was used to correct for transfection efficiency. Twenty-four hours after transfection, medium was changed and cells were incubated for another 24 h in the presence or absence of 20 μmol/L SB203580. Luciferase activity was measured 48 h after transfection and firefly luciferase activity was normalized to Renilla luciferase. B, PC-3 cells were cotransfected with indicated length of NAG-1 promoter reporter plasmid and pcDNA3.1-lacZ or pcDNA3-MKK6b(E). As an internal control, the phRL-null vector was used to correct for transfection efficiency. Luciferase activity was measured 48 h after transfection and firefly luciferase activity was normalized to Renilla luciferase.