Figure 3.
Activation of protein kinase Cs reduces KChIP2 mRNA level. A, Neonatal myocytes were treated with 100 nmol/L PMA, 4α-PMA, or vehicle (0.1% DMSO [None]) for 8 hours in the presence of 1 μmol/L bisindolmaleimide (BIM) or vehicle (0.1% DMSO). RT-PCR results for KChIP2 variants and GAPDH are shown. Note that PMA similarly decreased 3 splicing variant mRNA levels. B, Total KChIP2 mRNA level was determined by real-time PCR. **P<0.01 (Bonferroni test, n≥6). PE-induced decrease in KChIP2 mRNA level was not significantly different between the presence and absence of BIM.