Abstract
Antibacterial and biofilm removal activity of a new podoviridae Staphylococcus aureus bacteriophage (SAP-2), which belongs to the φ29-like phage genus of the Podoviridae family, and a cell-wall-degrading enzyme (SAL-2), which is derived from bacteriophage SAP-2, have been characterized. The cell-wall-degrading enzyme SAL-2 was expressed in Escherichia coli in a soluble form using a low-temperature culture. The cell-wall-degrading enzyme SAL-2 had specific lytic activity against S. aureus, including methicillin-resistant strains, and showed a minimum inhibitory concentration of about 1 μg/ml. In addition, this enzyme showed a broader spectrum of activity within the Staphylococcus genus compared with bacteriophage SAP-2 in its ability to remove the S. aureus biofilms. Thus, the cell-wall-degrading enzyme SAL-2 can be used to prevent and treat biofilm-associated S. aureus infections either on its own or in combination with other cell-wall-degrading enzymes with anti-S. aureus activity.
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Acknowledgments
This work was partially supported by a graduate fellowship from the Brain Korea 21 project of the Korean Ministry of Education, Science, and Technology and the Research Institute for Agriculture and Life Sciences, Seoul National University. Electron microscopy was carried out by the National Instrumental Center for Environmental Management (NICEM), Seoul National University.
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Jee-Soo Son and Se-Jung Lee contributed equally to this work.
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Son, JS., Lee, SJ., Jun, S.Y. et al. Antibacterial and biofilm removal activity of a podoviridae Staphylococcus aureus bacteriophage SAP-2 and a derived recombinant cell-wall-degrading enzyme. Appl Microbiol Biotechnol 86, 1439–1449 (2010). https://doi.org/10.1007/s00253-009-2386-9
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DOI: https://doi.org/10.1007/s00253-009-2386-9