Phage steering of antibiotic-resistance evolution in the bacterial pathogen, Pseudomonas aeruginosa

James Gurney , Léa Pradier , Joanne S Griffin , Claire Gougat-Barbera , Benjamin K Chan , Paul E Turner , Oliver Kaltz , Michael E Hochberg (1)

1 UMR ISEM - Institut des Sciences de l'Evolution de Montpellier

Background and objectives: Antimicrobial resistance is a growing global concern and has spurred increasing efforts to find alternative therapeutics. Bacteriophage therapy has seen near constant use in Eastern Europe since its discovery over a century ago. One promising approach is to use phages that not only reduce bacterial pathogen loads but also select for phage resistance mechanisms that tradeoff with antibiotic resistance-so called 'phage steering'. Methodology: Recent work has shown that the phage OMKO1 can interact with efflux pumps and in so doing select for both phage resistance and antibiotic sensitivity of the pathogenic bacterium Pseudomonas aeruginosa. We tested the robustness of this approach to three different antibiotics in vitro (tetracycline, erythromycin and ciprofloxacin) and one in vivo (erythromycin).

Mots clés: antibiotic resistance; bacteriophage; combination therapy; phage steering

Domaines: Sciences du Vivant [q-bio]

James Gurney, Léa Pradier, Joanne S Griffin, Claire Gougat-Barbera, Benjamin K Chan, et al.. Phage steering of antibiotic-resistance evolution in the bacterial pathogen, Pseudomonas aeruginosa. Evolution, Medicine, and Public Health, 2020, ⟨10.1093/emph/eoaa026⟩. ⟨hal-03018331⟩