Abstract
Intracellular bacteria are poorly responsive to antibiotic treatment. Pharmacological studies are thus needed to determine the antibiotics which are the most potent or effective against intracellular bacteria as well as to explore the reasons for poor bacterial responsiveness. An in vitro pharmacodynamic model is described, consisting of (1) phagocytosis of preopsonized bacteria by eukaryotic cells, (2) elimination of noninternalized bacteria with gentamicin, (3) incubation of infected cells with antibiotics, and (4) determination of surviving bacteria by viable cell counting and normalization of the counts based on sample protein content. The use of strains expressing fluorescent proteins under the control of an inducible promoter allows to follow intracellular bacterial division at the individual level and therefore to monitor bacterial persisters that do not multiply anymore.
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Acknowledgments
Intracellular infection models have been developed thanks to the financial support of the Belgian Fonds National de la Recherche Scientifique, the Interuniversity Attraction Poles initiated by the Belgian Science Policy Office, and the Brussels and Walloon Regions.
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Peyrusson, F. et al. (2021). In Vitro Models for the Study of the Intracellular Activity of Antibiotics. In: Verstraeten, N., Michiels, J. (eds) Bacterial Persistence. Methods in Molecular Biology, vol 2357. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-1621-5_16
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DOI: https://doi.org/10.1007/978-1-0716-1621-5_16
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