Analysis of the Paracoccidioides brasiliensis triosephosphate isomerase suggests the potential for adhesin function
Carregando...
Data
2007-12-01
Autores
Pereira, Luiz Augusto
Bao, Sonia Nair
Barbosa, Monica Santiago
da Silva, Juliana Leal M.
Felipe, Maria Sueli S.
de Santana, Jaime Martins
Mendes-Giannini, Maria José Soares [UNESP]
de Almeida Soares, Celia Maria
Título da Revista
ISSN da Revista
Título de Volume
Editor
Blackwell Publishing
Resumo
Paracoccidioides brasiliensis is an important fungal pathogen. The disease it causes, paracoccidioidomycosis (PCM), ranges from localized pulmonary infection to systemic processes that endanger the life of the patient. Paracoccidioides brasiliensis adhesion to host tissues contributes to its virulence, but we know relatively little about molecules and the molecular mechanisms governing fungal adhesion to mammalian cells. Triosephosphate isomerase (TPI: EC 5.3.1.1) of P. brasiliensis (PbTPI) is a fungal antigen characterized by microsequencing of peptides. The protein, which is predominantly expressed in the yeast parasitic phase, localizes at the cell wall and in the cytoplasmic compartment. TPI and the respective polyclonal antibody produced against this protein inhibited the interaction of P. brasiliensis to in vitro cultured epithelial cells. TPI binds preferentially to laminin, as determined by peptide inhibition assays. Collectively, these results suggest that TPI is required for interactions between P. brasiliensis and extracellular matrix molecules such as laminin and that this interaction may play an important role in the fungal adherence and invasion of host cells.
Descrição
Palavras-chave
Paracoccidioides brasiliensis, TPI, interaction with epithelial cells, infection
Como citar
Fems Yeast Research. Oxford: Blackwell Publishing, v. 7, n. 8, p. 1381-1388, 2007.