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- W2135016962 abstract "Group B Streptococcus (GBS) is a major cause of invasive bacterial infections in newborns and certain adult populations. Surface filamentous appendages known as pili have been recently identified in GBS. However, little is known about the role of these structures in disease pathogenesis. In this study we sought to probe potential functional role(s) of PilB, the major GBS pilus protein subunit, by coupling analysis of an isogenic GBS pilB knockout strain with heterologous expression of the pilB gene in the nonpathogenic bacterium Lactococcus lactis. We found the knockout GBS strain that lacked PilB was more susceptible than wild-type (WT) GBS to killing by isolated macrophages and neutrophils. Survival was linked to the ability of PilB to mediate GBS resistance to cathelicidin antimicrobial peptides. Furthermore, the PilB-deficient GBS mutant was more readily cleared from the mouse bloodstream and less-virulent in vivo compared to the WT parent strain. Strikingly, overexpression of the pilB gene alone in L..." @default.
- W2135016962 created "2016-06-24" @default.
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- W2135016962 date "2008-01-15" @default.
- W2135016962 modified "2023-10-15" @default.
- W2135016962 title "A group B streptococcal pilus protein promotes phagocyte resistance and systemic virulence" @default.
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- W2135016962 doi "https://doi.org/10.1096/fj.07-093963" @default.
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