Fig. 2

Characterization of circTP63 in LUSC cells. a Genomic loci of circTP63 gene. circTP63 is produced at the TP63 gene (NM_003722.4) locus containing exons 10–11. The back-splice junction of circTP63 was identified by Sanger sequencing. b PCR analysis for circTP63 and its linear isoform TP63 in cDNA and genomic DNA (gDNA). c Northern blot analysis showed the size and abundance of circTP63 in one paired sample of LUSC tumorous tissue and corresponding adjacent nontumorous tissues. M: marker. d qRT-PCR for the abundance of circTP63 and TP63 in H1703 cells treated with Actinomycin D at the indicated time point. e Levels of circTP63 in the nuclear and cytoplasmic fractions of SW900 and H1703 cells. The error bars (d, e) represent s.d. (n = 3)