Abstract
Preventive vaccination by a hsp90-expressing DNA vaccine and recombinant hsp90 protein vaccine, both derived from theCandida albicans hsp90 using BALB-c mouse model of systemic candidiasis, was performed. Hsp90 mRNA was cloned from a clinical isolate ofC. albicans, converted to cDNA and cloned into vaccination plasmid pVAX1. Two methods of DNA application were tested: intramuscular (i.m.) and intradermal (i.d.) injection. Recombinant protein was applied by i.d. injection with Freund’s adjuvant; the control groups received PBS or Freund’s adjuvant only. Mice were vaccinated and after 19 d re-vaccinated. After 3 weeks, the mice were challenged with the liveC. albicans in a dose of 5 × 106 CFU per mouse. After the challenge, the mice vaccinated i.d. with DNA vaccine survived for 39 and 64% longer compared to those receiving Freund’s adjuvant and/or PBS, respectively. The i.m. application of the DNA vaccine did not provide any significant protectivity. The serum level of anti-candida-hsp90 serum IgG antibodies correlated with the survival rate in both i.d. protein and DNA vaccination approaches. We stressed the importance of specific humoral immunity in the mouse model of systemic candidiasis.
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This project was supported by grant no. 14501104 ofPalacký University in Olomoue, grant of theMinistry of Education, Youth and Sports of the Czech Republic MSM 151 100 002, and grant of theMinistry of Health of the Czech Republic IGA MZCR N17538-3/2003.
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Raska, M., Běláková, J., Wudattu, N.K. et al. Comparison of protective effect of protein and DNA vaccines hsp90 in murine model of systemic candidiasis. Folia Microbiol 50, 77–82 (2005). https://doi.org/10.1007/BF02931297
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DOI: https://doi.org/10.1007/BF02931297