A Vaxfectin®-adjuvanted HSV-2 plasmid DNA vaccine is effective for prophylactic and therapeutic use in the guinea pig model of genital herpes

Ronald L. Veselenak, Mark Shlapobersky, Richard B. Pyles, Qun Wei, Sean M. Sullivan, Nigel Bourne

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Here we describe studies in the guinea pig model of genital herpes to evaluate a novel plasmid DNA (pDNA) vaccine encoding the HSV-2 glycoprotein D and UL46 and UL47 genes encoding tegument proteins VP11/12 and VP 13/14 (gD2/UL46/UL47), formulated with a cationic lipid-based adjuvant Vaxfectin®. Prophylactic immunization with Vaxfectin®-gD2/UL46/UL47 significantly reduced viral replication in the genital tract, provided complete protection against both primary and recurrent genital skin disease following intravaginal HSV-2 challenge, and significantly reduced latent HSV-2 DNA in the dorsal root ganglia compared to controls. We also examined the impact of therapeutic immunization of HSV-2 infected animals. Here, Vaxfectin®-gD2/UL46/UL47 immunization significantly reduced both the frequency of recurrent disease and viral shedding into the genital tract compared to controls. This novel adjuvanted pDNA vaccine has demonstrated both prophylactic and therapeutic efficacy in the guinea pig model of genital herpes and warrants further development.

Original languageEnglish (US)
Pages (from-to)7046-7051
Number of pages6
JournalVaccine
Volume30
Issue number49
DOIs
StatePublished - Nov 19 2012

Keywords

  • DNA vaccine
  • Herpes simplex virus type 2
  • Therapeutic vaccine
  • Vaxfectin

ASJC Scopus subject areas

  • Molecular Medicine
  • Immunology and Microbiology(all)
  • veterinary(all)
  • Public Health, Environmental and Occupational Health
  • Infectious Diseases

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