Temperate Bacteriophages from Chronic <named-content content-type="genus-species">Pseudomonas aeruginosa</named-content> Lung Infections Show Disease-Specific Changes in Host Range and Modulate Antimicrobial Susceptibility

Pseudomonas aeruginosa is a key opportunistic respiratory pathogen in patients with cystic fibrosis and non-cystic fibrosis bronchiectasis. The genomes of these pathogens are enriched with mobile genetic elements including diverse temperate phages. While the temperate phages of the Liverpool epidemic strain have been shown to be active in the human lung and enhance fitness in a rat lung infection model, little is known about their mobilization more broadly across P. aeruginosa in chronic respiratory infection. Using a novel metagenomic approach, we identified eight groups of temperate phages that were mobilized from 94 clinical P. aeruginosa isolates. Temperate phages from P. aeruginosa isolated from more advanced disease showed high infectivity rates across a wide range of P. aeruginosa genotypes. Furthermore, we showed that multiple phages altered the susceptibility of PAO1 to antibiotics at subinhibitory concentrations.

Abstract licence: CC BY

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