Internalization of Staphylococcus aureus by Human Corneal Epithelial Cells: Role of Bacterial Fibronectin-Binding Protein and Host Cell Factors
AUTOR(ES)
Jett, Bradley D.
FONTE
American Society for Microbiology
RESUMO
Wild-type Staphylococcus aureus was observed to be capable of invading human corneal epithelial cells (HCEC) in vitro. Internalization of S. aureus required expression of fibronectin-binding proteins (FnBPs); the capacity of an FnBP-deficient isogenic strain to invade HCEC was reduced by more than 99%. The binding of S. aureus to HCEC did not require viable bacteria, since UV-killed cells were observed to adhere efficiently. Invasion of HCEC by S. aureus involved active host cell mechanisms; uptake was nearly completely eliminated by cytochalasin D and genistein. These data suggest that FnBPs play a key role in host-parasite interactions and may serve as an important adhesin or invasin in ulcerative keratitis caused by S. aureus.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=128182Documentos Relacionados
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