Fig. 11From: Re-expression of SPR1 in Breast Cancer Cells by Phorbol 12-Myristate 13-Acetate (PMA) or UV Irradiation Is Mediated by the AP-1 Binding Site in the SPR1 PromoterStimulation of transcriptional activity of SPR1 promoter by PMA. Twenty-four hours after transfection, 21MT-2 cells were treated with PMA or without PMA (control) for 9 or 30 hr. PMA was then removed and CAT activity was measured. Extracts were normalized for β-Gal activity. Results are typical of triplicate experiments.Back to article page