The luciferase reporter assay was performed as described previously [24 (link)]. The BCL2 promoter was cloned into the pGL3-Basic luciferase plasmid (Promega, USA) to construct the WT BCL2 reporter. BCL2 truncat plasmids and mutant plasmids were also constructed (Fig. 5E, H). For the Renilla luciferase reporter assay, each reporter construct was co-transfected into HEK293T cells together with the KLF5 plasmid or control plasmid. After 48 h of incubation, luciferase activity was measured using the Dual Luciferase Reporter Assay System (Promega, USA).
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