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- W2802886566 abstract "There is an urgent need to develop novel approaches for predicting and preventing the evolution of antibiotic resistance. Here, we show that the ability to evolve de novo resistance to a clinically important β-lactam antibiotic, ceftazidime, varies drastically across the genus Pseudomonas. This variation arises because strains possessing the ampR global transcriptional regulator evolve resistance at a high rate. This does not arise because of mutations in ampR. Instead, this regulator potentiates evolution by allowing mutations in conserved peptidoglycan biosynthesis genes to induce high levels of β-lactamase expression. Crucially, blocking this evolutionary pathway by co-administering ceftazidime with the β-lactamase inhibitor avibactam can be used to eliminate pathogenic P. aeruginosa populations before they can evolve resistance. In summary, our study shows that identifying potentiator genes that act as evolutionary catalysts can be used to both predict and prevent the evolution of antibiotic resistance. The ability to evolve resistance to the antibiotic ceftazidime is shown to vary across the Pseudomonas genus because the AmpR global transcriptional regulator potentiates evolution. Blocking this pathway can eliminate pathogenic strains before they evolve resistance." @default.
- W2802886566 created "2018-05-17" @default.
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- W2802886566 date "2018-04-23" @default.
- W2802886566 modified "2023-09-28" @default.
- W2802886566 title "Identifying and exploiting genes that potentiate the evolution of antibiotic resistance" @default.
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- W2802886566 doi "https://doi.org/10.1038/s41559-018-0547-x" @default.
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