Figure 4.
Identification of RepD in the human IL-1α gene. A, Schematic representation of the human IL-1α gene promoter and contiguous 270 bp of 3′ sequence. The nucleotide sequence of the RepD-A sequence is shown. B, Luciferase reporter plasmids regulated by the human IL-1α gene promoter plus the contiguous 270 bp of 3′ sequence, or by the IL-1α promoter alone, were transfected into human aortic endothelial cells. Production of the luciferase reporter gene measured 36 hours later revealed that the additional 270 bp containing the RepD-A sequence suppressed luciferase reporter gene activation. The bar graph reflects the mean±SEM for triplicate samples and is representative of 3 experiments.