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Objective:The comparison of carcinogenicity of HPV 16 HB variant E7 and HPV 16 WE7.Methods:To construct a luciferase reporter gene plasmid which was under the control of cyclinA promoter.HPV16 HB variant E7 and HPV16 WE7 were separately cloned into pCD3.1.Cotransfections were performed by using a cyclinA reporter plasmid and each expression as indicated(HPV-16WE7,HPV-16HBE7) or empty vector as control.To control for transfection,cell were cotransfected with the pRL-cytomegalovirus plasmid.Luciferase activity was assayed.Results:A two-fold increase of cyclinA promoter activity was observed when HPV16 HB variant E7 was co-transfected in comparison of an empty vector.