Figure 1.
Construction of recombinant adeno-E6 vectors. (A) The human papillomavirus (HPV) genes were removed from pcDNA3.1 and cloned into Adeno X as outlined (Image modified from Clontech Labs., Adeno-X™ Expression System 1). (B) Verification of cloning of the HPVE6 expression cassette by digestion of the constructs, an Adeno-X positive control (Pc) and the pShuttle2 vector negative control (Nc) with XhoI. (C) Verification of recombinant Adeno-HPVE6 constructs by PCR with the Adeno-X forward and reverse PCR primers that specifically amplifies a 287-bp sequence spanning the ICeuI ligation site. (D) Verification of HPV E6 constructs using HPV11E6 and HPV18E6 specific primers with pShuttle as a Nc. In each case, three different clones of each construct were selected for analysis (B–D).