Figure 6.
Transcription of mir-23a∼27a∼24-2 gene cluster is dependent on pol II. (A) Luciferase assay was performed using the reporter plasmid pGL3-23P639 or pRL-CMV. HEK293T cells were transfected with the reporter plasmids. Right after adding the plasmids, the cells were incubated in 0 or 50 μg/ml of α-amanitin for 6 h before the cells were harvested for assay. (B) RT–PCR to show that pol II activity (GAPDH pre-mRNA) is selectively reduced under this condition while pol III activity (pre-tRNAtyr) is not affected.