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. 2011 Jun 28;6(6):e21707. doi: 10.1371/journal.pone.0021707

Figure 4. Involvement of Egr-1 in morphine-mediated induction of PDGF-BB in HBMECs.

Figure 4

(A) Whole cell lysates of HBMECs transfected with either the wild type (WT) or dominant negative (DN) construct of Egr-1 were subject to western blot analysis using antibodies specific for PDGF-BB. Transfection of cells with the DN-Egr-1, but not the WT-Egr-1 inhibited morphine-mediated induction of PDGF-BB expression. (B) Schematic illustration of Egr-1 binding consensus sequence on the PDGF-B promoter region. (C) ChIP assay demonstrating morphine-mediated binding of Egr-1 to the PDGF-B promoter. All the data are presented as meanĀ±SD of three individual experiments. ***p<0.001 vs control group.