Fig. 5.

Stabilization of the STC1 mRNA by 1,25(OH)₂D₃ and PMA in OK-P cells. OK-P cells were pretreated with 100 nM ActD, then, the cells were incubated (A) 100 nM 1,25(OH)₂D₃ for 6 h or (B) 100 nM PMA for 3 h. OK-P cells were treated with (C) 100 nM 1,25(OH)₂D₃ for 6 h or (D) 100 nM PMA for 3 h, followed by incubation with 1000 nM ActD for different periods of time. The mRNA expression levels of STC1 were determined by real-time PCR analysis. Results are expressed as the means ± SD (n = 3). **p<0.01 compared with vehicle.