CP-DN-ATF5 does not have major effects on expression of CEBPB or CEBPD. A, CP-DN-ATF5 treatment for 24 hours does not significantly affect CEBPB mRNA levels in T98G cells. Values are means ± SEM for 3 independent experiments each carried out in triplicate. B, CP-DN-ATF5 treatment for 48 hours does not significantly affect CEBPB protein levels in T98G cells. Replicate cultures were treated with 0, 50 or 100 μM CP-DN-ATF5 for 48 hours and relative (to ACTIN) levels of CEBPB protein were determined by Western immunoblotting and evaluation of relative band intensities. C, CP-DN-ATF5 treatment for 24 hours has relatively little effect on CEBPD expression in T98G cells as determined by Western immunoblotting. Left panel shows representative blot; right panel, data show quantification of Western immunoblotting in 3 independent experiments. D, CP-DN-ATF5 treatment for 48 hours has relatively little effect on CEBPD expression in T98G cells as determined by Western immunoblotting.