Objective: To construct a DNA vaccine as a prophylactic model to prevent condyloma acuminatum and detect its immunogenicity in mice.
Methods: The major capsid protein (L1) gene of human papillomavirus (HPV) 6b was inserted into an eukaryotic expression plasmid (pcDNA3.1). The recombinant plasmid was transfected into COS-7 cells. Western blot were performed to detect whether L1 protein can be expressed in eukaryotic cells. Eighteen female BALB/c mice were tested for immunogenicity study.
Results: The recombinant plasmid (pcDNA3.1-HPV6bL1) was verified as HPV6b L1 gene by sequencing. Western blot showed specific strip. Anti-L1 protein antibodies could be detected in the mice's sera inoculated with pcDNA3.1-HPV6bL1. Similarly, IL-4, IL-2, and IFN-gamma were increased in the same mice.
Conclusion: HPV6b L1 recombinant plasmid was constructed successfully which had immunogenicity for BALB/c mice. It provided experimental evidence for the research of DNA vaccine of condyloma acuminata.
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