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Proteomic analysis of Paracoccidioides brasiliensis complex isolates: Correlation of the levels of differentially expressed proteins with in vivo virulence

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do Amaral, Cristiane Candida [1] ; Fernandes, Geisa Ferreira [2] ; Rodrigues, Anderson Messias [2] ; Burger, Eva [3] ; de Camargo, Zoilo Pires [2]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Fed Univ Sao Paulo UNIFESP, Discipline Infect Dis, Dept Med, Sao Paulo - Brazil
[2] Fed Univ Sao Paulo UNIFESP, Discipline Cellular Biol, Dept Microbiol Immunol & Parasitol, Sao Paulo - Brazil
[3] Fed Univ Alfenas UNIFAL, Dept Microbiol & Immunol, Alfenas - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: PLoS One; v. 14, n. 7 JUL 2 2019.
Citações Web of Science: 0

Background Paracoccidioidomycosis (PCM) is a systemic mycosis commonly found in Latin America that is caused by distinct species of Paracoccidioides genus: Paracoccidioides brasiliensis complex (S1, PS2, PS3 and PS4) and Paracoccidioides lutzii. Its pathobiology has been recently explored by different approaches to clarify the mechanisms of host-pathogen interactions underpinning PCM. The diversity of clinical forms of this disease has been attributed to both host-and fungus-related factors. Methodology/Principal findings For better understanding of the molecular underpinnings of host-fungus interactions, we evaluated in vivo virulence of nine Paracoccidioides brasiliensis complex isolates and correlated it to protein expression profiles obtained by two-dimensional gel electrophoresis. Based on the recovery of viable fungi from mouse organs, the isolates were classified as those having low, moderate, or high virulence. Highly virulent isolates overexpressed proteins related to adhesion process and stress response, probably indicating important roles of those fungal proteins in regulating the colonization capacity, survival, and ability to escape host immune system reaction. Moreover, highly virulent isolates exhibited enhanced expression of glycolytic pathway enzymes concomitantly with repressed expression of succinylCoA ligase beta chain, a protein related to the tricarboxylic acid cycle. Conclusions/Significance Our findings may point to the mechanisms used by highly virulent P. brasiliensis isolates to withstand host immune reactions and to adapt to transient iron availability as strategies to survive and overcome stress conditions inside the host. (AU)

Processo FAPESP: 09/54024-2 - Biologia molecular e proteômica de fungos de interesse médico: Paracoccidioides brasiliensis e Sporothrix schenckii
Beneficiário:Zoilo Pires de Camargo
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 17/27265-5 - Epidemiologia molecular e perspectivas genômicas na evolução e propagação de patógenos fúngicos emergentes
Beneficiário:Anderson Messias Rodrigues
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores