Abstract
The acquisition of an antibiotic resistance phenotype can be due to genetic modifications (heritable) or transient changes in bacterial physiology (non-heritable). Induction of the expression of multidrug efflux pumps by specific compounds/growth conditions is one of the causes of Pseudomonas aeruginosa transient resistance. Biosensor strains have been used for decades to analyze real-time changes in transcription and (less frequently) translation of different genes, in different mutants, growing under several conditions or in the presence of different compounds. Among them, those based on bioluminescence or fluorescence are the most amenable for the real-time analysis of transcription. In this chapter, we describe the methods for constructing fluorescence- and bioluminescence-based biosensors to monitor the P. aeruginosa efflux pumps expression, as well as the use of these biosensors to identify compounds capable of inducing the expression of these antibiotic resistance determinants and, consequently, triggering transient resistance to antimicrobials.
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Laborda, P., Alcalde-Rico, M., Gil-Gil, T., Martínez, J.L., Blanco, P. (2024). Biosensors for Inducers of Transient Antibiotic Resistance. In: Bertoni, G., Ferrara, S. (eds) Pseudomonas aeruginosa. Methods in Molecular Biology, vol 2721. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-3473-8_8
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DOI: https://doi.org/10.1007/978-1-0716-3473-8_8
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