Luciferase activity assays were carried out as described previously with some modifications, luciferase plasmids containing wild-type and 3 mutant PRKDC promoters were constructed in the pGL3B vectors with or without CDDP (1 μg/ml for 24 h). PRKDC promoters with plasmid CEBPD overexpressed SiHa cells were co-transfected with pGL3B. Luciferase activity was measured with a Dual-Glo luciferase assay kit (E290, E294, E2980, Promega, Madison, WI, USA). The sequences of primers the mutant constructs were listed in Supplementary Table 3.
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