Abstract
The effect of the activity of immobilized enzymes on the initial attachment of pathogenic bacteria commonly associated with nosocomial infections (Pseudomonas aeruginosa and Staphylococcus epidermidis) was investigated. The proteolytic enzymes, subtilisin A and the glycoside hydrolase cellulose, were covalently attached onto poly(ethylene-alt-maleic) anhydride copolymer films. A comparison between active and heat-inactivated surfaces showed that while the activity of immobilized cellulase reduced the attachment of S. epidermidis by 67%, it had no effect on the attachment of P. aeruginosa. Immobilized subtilisin A had opposite effects: the active enzyme had no effect on the attachment of S. epidermidis but reduced the attachment of P. aeruginosa by 44%. The results suggest that different biomolecules are involved in the initial steps of attachment of different bacteria, and that the development of broad-spectrum antifouling enzymatic coatings will need to involve the co-immobilization of enzymes.
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Acknowledgments
The authors are grateful to Tina Lenk and Nelly Rein (Leibniz Institute of Polymer Research Dresden, Germany), and to Irina Elert (BASF SE, Ludwigshafen, Germany) for technical support.
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Cordeiro, A.L., Hippius, C. & Werner, C. Immobilized enzymes affect biofilm formation. Biotechnol Lett 33, 1897–1904 (2011). https://doi.org/10.1007/s10529-011-0643-3
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DOI: https://doi.org/10.1007/s10529-011-0643-3