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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

An immunoproteomic approach revealing peptides from Sporothrix brasiliensis that induce a cellular immune response in subcutaneous sporotrichosis

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Fogaca de Almeida, Jose Roberto [1] ; Jannuzzi, Grasielle Pereira [1] ; Kaihami, Gilberto Hideo [2] ; Dantas Breda, Leandro Carvalho [3] ; Ferreira, Karen Spadari [4] ; de Almeida, Sandro Rogerio [1]
Total Authors: 6
[1] Univ Sao Paulo, Fac Pharmaceut Sci, Dept Clin & Toxicol Anal, Sao Paulo - Brazil
[2] Univ Sao Paulo, Inst Chem, Dept Biochem, Sao Paulo - Brazil
[3] Univ Sao Paulo, Inst Biomed Sci, Dept Immunol, Sao Paulo - Brazil
[4] Univ Fed Sao Paulo, Inst Environm Chem & Pharmaceut Sci, Dept Biol Sci, Diadema - Brazil
Total Affiliations: 4
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 8, MAR 8 2018.
Web of Science Citations: 8

Sporothrix brasiliensis is the most virulent fungus of the Sporothrix complex and is the main species recovered in the sporotrichosis zoonotic hyperendemic area in Rio de Janeiro. A vaccine against S. brasiliensis could improve the current sporotrichosis situation. Here, we show 3 peptides from S. brasiliensis immunogenic proteins that have a higher likelihood for engaging MHC-class II molecules. We investigated the efficiency of the peptides as vaccines for preventing subcutaneous sporotrichosis. In this study, we observed a decrease in lesion diameters in peptide-immunized mice, showing that the peptides could induce a protective immune response against subcutaneous sporotrichosis. ZR8 peptide is from the GP70 protein, the main antigen of the Sporothrix complex, and was the best potential vaccine candidate by increasing CD4(+) T cells and higher levels of IFN-gamma, IL-17A and IL-1 beta characterizing a strong cellular immune response. This immune environment induced a higher number of neutrophils in lesions that are associated with fungus clearance. These results indicated that the ZR8 peptide induces a protective immune response against subcutaneous sporotrichosis and is a vaccine candidate against S. brasiliensis infection. (AU)

FAPESP's process: 16/04729-3 - Bases of cellular immune response in chromoblastomycosis and sporotrichosis: implications for vaccine therapy
Grantee:Sandro Rogerio de Almeida
Support Opportunities: Research Projects - Thematic Grants