Fig. 7.
Time-dependent effects of either 1,25(OH)2D3 alone or in combination with RA on levels of p27KIP1 mRNA in UF-1 cells. Cells were cultured for the indicated durations with either 10−7mol/L 1,25(OH)2D3 alone or in combination with 10−7 mol/L RA. Total RNA (15 μg per lane) was blotted and hybridized with a p27KIP1 cDNA probe. Bottom panel shows the ethidium bromide–stained gel with 28S and 18S ribosomal RNA demonstrating equivalent RNA-loading per lane. Expression of p27KIP1 transcripts relative to the expression in control cells was determined by densitometry.