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- W2145992519 abstract "Clostridium perfringens is an anaerobic, Gram-positive bacterium that causes a range of diseases in humans, including lethal gas gangrene. We have recently shown that strains of C. perfringens move across the surface of agar plates by a unique type IV pilus (TFP)-mediated social motility that had not been previously described. Based on sequence homology to pilins in Gram-negative bacteria, C. perfringens appears to have two pilin subunits, PilA1 and PilA2. Structural prediction analysis indicated PilA1 is similar to the pseudopilin found in Klebsiella oxytoca, while PilA2 is more similar to true pilins found in the Gram-negative pathogens Pseudomonas aeruginosa and Neisseria gonorrhoeae. Strains of N. gonorrhoeae that were genetically deficient in the native pilin, PilE, but supplemented with inducible expression of PilA1 and PilA2 of C. perfringens were constructed. Genetic competence, wild-type twitching motility, and attachment to human urogenital epithelial cells were not restored by expression of either pilin. However, attachment to mouse and rat myoblast (muscle) cell lines was observed with the N. gonorrhoeae strain expressing PilA2. Significantly, wild-type C. perfringens cells adhered to mouse myoblasts under anaerobic conditions, and adherence was 10-fold lower in a pilT mutant that lacked functional TFP. These findings implicate C. perfringens TFP in the ability of C. perfringens to adhere to and move along muscle fibers in vivo, which may provide a therapeutic approach to limiting this rapidly spreading and highly lethal infection." @default.
- W2145992519 created "2016-06-24" @default.
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- W2145992519 date "2011-08-01" @default.
- W2145992519 modified "2023-09-27" @default.
- W2145992519 title "Expression of a Clostridium perfringens Type IV Pilin by Neisseria gonorrhoeae Mediates Adherence to Muscle Cells" @default.
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- W2145992519 doi "https://doi.org/10.1128/iai.00909-10" @default.
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