Article (Scientific journals)
New Bacteriophages against Emerging Lineages ST23 and ST258 of Klebsiella pneumoniae and Efficacy Assessment in Galleria mellonella Larvae
Thiry, Damien; Passet, Virginie; Danis-Wlodarczyk, Katarzyna et al.
2019In Viruses, 11 (5)
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Keywords :
antimicrobial resistance; capsule; Galleria mellonella; Klebsiella pneumoniae; phage therapy
Abstract :
[en] Klebsiella pneumoniae is a bacterial pathogen of high public health importance. Its polysaccharide capsule is highly variable but only a few capsular types are associated with emerging pathogenic sublineages. The aim of this work is to isolate and characterize new lytic bacteriophages and assess their potential to control infections by the ST23 and ST258 K. pneumoniae sublineages using a Galleria mellonella larvae model. Three selected bacteriophages, targeting lineages ST258 (bacteriophages vB_KpnP_KL106-ULIP47 and vB_KpnP_KL106-ULIP54) and ST23 (bacteriophage vB_KpnP_K1-ULIP33), display specificity for capsular types KL106 and K1, respectively. These podoviruses belong to the Autographivirinae subfamily and their genomes are devoid of lysogeny or toxin-associated genes. In a G. mellonella larvae model, a mortality rate of 70% was observed upon infection by K. pneumoniae ST258 and ST23. This number was reduced to 20% upon treatment with bacteriophages at a multiplicity of infection of 10. This work increases the number of characterized bacteriophages infecting K. pneumoniae and provides information regarding genome sequence and efficacy during preclinical phage therapy against two prominent sublineages of this bacterial species.
Disciplines :
Microbiology
Author, co-author :
Thiry, Damien ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires (DMI) > Bactériologie et pathologie des maladies bactériennes
Passet, Virginie
Danis-Wlodarczyk, Katarzyna
Lood, Cédric
Wagemans, Jeroen
De Sordi, Luisa
van Noort, Vera
Dufour, Nicolas
Debarbieux, Laurent
Mainil, Jacques ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires (DMI) > Bactériologie et pathologie des maladies bactériennes
Brisse, Sylvain 
Lavigne, Rob 
 These authors have contributed equally to this work.
Language :
English
Title :
New Bacteriophages against Emerging Lineages ST23 and ST258 of Klebsiella pneumoniae and Efficacy Assessment in Galleria mellonella Larvae
Publication date :
03 May 2019
Journal title :
Viruses
eISSN :
1999-4915
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI), Switzerland
Volume :
11
Issue :
5
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 May 2019

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