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- W2892336694 abstract "Uropathogenic Escherichia coli (UPEC) are the major causative agents of urinary tract infections, employing numerous molecular strategies to contribute to adhesion, colonization, and persistence in the bladder niche. Identifying strategies to prevent adhesion and colonization is a promising approach to inhibit bacterial pathogenesis and to help preserve the efficacy of available antibiotics. This approach requires an improved understanding of the molecular determinants of adhesion to the bladder urothelium. We designed experiments using a custom-built live cell monolayer rheometer (LCMR) to quantitatively measure individual and combined contributions of bacterial cell surface structures [type 1 pili, curli, and phosphoethanolamine (pEtN) cellulose] to bladder cell adhesion. Using the UPEC strain UTI89, isogenic mutants, and controlled conditions for the differential production of cell surface structures, we discovered that curli can promote stronger adhesive interactions with bladder cells than type 1 pili. Moreover, the coproduction of curli and pEtN cellulose enhanced adhesion. The LCMR enables the evaluation of adhesion under high-shear conditions to reveal this role for pEtN cellulose which escaped detection using conventional tissue culture adhesion assays. Together with complementary biochemical experiments, the results support a model wherein cellulose serves a mortar-like function to promote curli association with and around the bacterial cell surface, resulting in increased bacterial adhesion strength at the bladder cell surface." @default.
- W2892336694 created "2018-09-27" @default.
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- W2892336694 date "2018-09-19" @default.
- W2892336694 modified "2023-10-16" @default.
- W2892336694 title "Phosphoethanolamine cellulose enhances curli-mediated adhesion of uropathogenic <i>Escherichia coli</i> to bladder epithelial cells" @default.
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- W2892336694 doi "https://doi.org/10.1073/pnas.1801564115" @default.
- W2892336694 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6176564" @default.
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