Abstract
Diagnostic protocols for food-borne bacterial pathogens such as Listeria need to be sensitive, specific, rapid, and inexpensive. Conventional culture methods are hampered by lengthy enrichment and incubation steps. Bacteriophage-derived high-affinity binding molecules (cell wall-binding domains, CBDs) specific for Listeria cells have recently been introduced as tools for detection and differentiation of this pathogen in foods. When coupled with magnetic separation, these proteins offer advantages in sensitivity and speed compared to the standard diagnostic methods. Furthermore, fusion of CBDs to differently colored fluorescent reporter proteins enables differentiation of Listeria strains in mixed cultures. This chapter provides protocols for detection of Listeria in food by CBD-based magnetic separation and subsequent multiplexed identification of strains of different serotypes with reporter-CBD fusion proteins.
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Acknowledgment
We thank Fritz Eichenseher for critical reading of the manuscript.
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Schmelcher, M., Loessner, M.J. (2014). Use of Bacteriophage Cell Wall-Binding Proteins for Rapid Diagnostics of Listeria. In: Jordan, K., Fox, E., Wagner, M. (eds) Listeria monocytogenes. Methods in Molecular Biology, vol 1157. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-0703-8_12
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DOI: https://doi.org/10.1007/978-1-4939-0703-8_12
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