Abstract
The P10 peptide is a conserved sequence in the gp43 diagnostic antigen of most isolates of Paracoccidioides brasiliensis. P10 is promiscuously presented by three different MHC class II molecules from mouse haplotypes, and also by 90 % of Caucasian HLA-DR antigens. It elicits an IFN-γ-dependent protective anti-fungal response and is a candidate for a peptide vaccine. Immunization with P10 of mice intratracheally challenged with virulent yeasts rendered significant protection measured by colony-forming units in the lungs. A predominant Th-1 immune response was obtained. Different adjuvants enhanced the activity of the peptide and P10-primed dendritic cells were highly effective in clearing fungal infection. Gene therapy with plasmids expressing P10 and IL-12 elicited a protective Th-1 immune response without causing hyperinflammation or fibrosis. In a long-term experiment, vaccination with pP10 and pIL-12 virtually eliminated all fungal elements and preserved a normal lung parenchyma.
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Acknowledgement
The series of studies on the peptide vaccine to P. brasiliensis and gene therapy were sponsored by the Fundação de Amparo à Pesquisa do Estado de São Paulo, São Paulo, Brazil.
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Travassos, L.R., Rittner, G.M.G., Taborda, C.P. (2013). Paracoccidioidomycosis: Advance Towards a Molecular Vaccine. In: Giese, M. (eds) Molecular Vaccines. Springer, Vienna. https://doi.org/10.1007/978-3-7091-1419-3_14
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DOI: https://doi.org/10.1007/978-3-7091-1419-3_14
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