Fig. 6.
Northern blot analysis of HEK293 cells transfected with vector (pRc/CMV), the antisense CHEMR1, sense CHEMR1, and CCR-1 in pRc/CMV. HEK293 cells were transfected with 20 μg of each DNA using the modified calcium phosphate method. After 24 hours, total RNA was isolated with Tri-reagent (Molecular Research Center, Cincinnati, OH). Twenty micrograms of the RNA was run on a 1.2% formaldehyde gel, blotted to Quiabrane, and hybridized with [32P] CHEMR1 cDNA. The filter was washed finally with 0.5× SSC, 0.1% SDS at 65°C, and the blot was exposed to XAR-5 film in a cassette at −70°C for 2 days. The same filter was stripped and subjected to sequential hybridization with [32P] CCR-1 and [32P] rat GAPDH probe, respectively.