PDGF-BB induces the expression of cyclin A mRNA in NFAT-dependent manner
in VSMC. A, quiescent VSMC were treated with and without PDGF-BB
(20 ng/ml) for the indicated times, and total cellular RNA was isolated. An
equal amount of RNA was subjected to RT-PCR analysis of cyclin A and
β-actin mRNA levels using their respective primers. B, quiescent
VSMC were treated with and without PDGF-BB (20 ng/ml) in the presence and
absence of CsA (10 μm) for the indicated times, and total
cellular RNA was isolated and analyzed for cyclin A and β-actin mRNA
levels as described in A. C, conditions were the same as in
B except that cells were transduced with either Ad-GFP or Ad-VIVIT at
an m.o.i. of 80 and quiesced before subjecting to PDGF-BB treatment and RT-PCR
analysis. The bar graphs represent mean ± S.D. values of three
independent experiments. *, p < 0.01 versus
control or GFP; †, p < 0.01 versus PDGF-BB, GFP +
PDGF-BB treatment alone.