Fluorescent microparticles as a rapid tool in bacterial adherence studies

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Abstract

Fluorescent microparticles (FMPs) coated with the O75X adhesin of uropathogenic Escherichia coli were evaluated for use in adhesion studies. The purified o75X adhesin coated efficiently onto the microparticles, and the O75X-FMPs retained the agglutination properties of the intact O75X adhesin molecules. Binding tests on frozen sections of human kidney and with immobilized target proteins showed that the tissue- and molecular-binding specificities of the O75X-FMPs were closely similar to those of the intact O75X adhesin. The results show that adhesin-coated FMPs are rapid and stable reagents for functional study of bacterial adhesion proteins.

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