Features of uropathogenic Escherichia coli able to invade a prostate cell line.

RWPE-1 normal prostate cells were tested as an experimental model for adhesion/invasion assays by genotypically and phenotypically characterized community uropathogenic strains of Escherichia coli (UPEC), a frequent cause of urinary tract infections (UTIs) and significant etiologic agent also in bacterial prostatitis. Adhesive ability and strong biofilm production was significantly associated with the bacterial invasive phenotype. Invasive strains derived mainly from male and pediatric patients. This study suggests that such a cell model could usefully integrate other available methods of urovirulence analysis, to deepen knowledge on the bacterial interaction with host cells.