Protection against Schistosoma mansoni utilizing DNA vaccination with genes encoding Cu/Zn cytosolic superoxide dismutase, signal peptide-containing superoxide dismutase and glutathione peroxidase enzymes

Kamal A. Shalaby, Lei Yin, Arvind Thakur, Linda Christen, Edward G. Niles, Philip T. LoVerde

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

Protection against Schistosoma mansoni infection in C57BL/6 female mice was evaluated by two DNA vaccination strategies. Mice were either vaccinated by intramuscular injection with pcDNAI/Amp constructs encoding either Cu/Zn cytosolic superoxide dismutase (CT-SOD), signal peptide-containing SOD (SP-SOD), glutathione peroxidase (GPXbb) or a mutated form of GPX (GPX m), or primed with naked DNA constructs and boosted with recombinant vaccinia virus (RVV) containing the same genes. Animals were then challenged with S. mansoni and the level of protection was assessed as the reduction in worm burden. CT-SOD showed significant levels of protection compared to the control group, ranging between 44 and 60%, while SP-SOD exhibited from 22 to 45%. GPXbb showed levels of protection (23-55%) higher than GPX m (25-34%). The prime-boost strategy gave the same results as naked DNA or recombinant vaccinia virus alone except in the case of GPX, where the protection was 85%.

Original languageEnglish (US)
Pages (from-to)130-136
Number of pages7
JournalVaccine
Volume22
Issue number1
DOIs
StatePublished - Dec 8 2003

Keywords

  • Antioxidant enzymes
  • DNA vaccine
  • Schistosoma mansoni

ASJC Scopus subject areas

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

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