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Title

Isolation of four lytic phages infecting Klebsiella pneumoniae K22 clinical isolates from Spain

AuthorsDomingo-Calap, Pilar; Beamud, Beatriz; Vienne, Justine; González-Candelas, Fernando; Sanjuán, Rafael
KeywordsKlebsiella pneumoniae
Phage therapy
Bacteriophage
Issue Date2020
PublisherMultidisciplinary Digital Publishing Institute
CitationInternational Journal of Molecular Sciences 21(2): 425 (2020)
AbstractThe emergence of multi-drug-resistant bacteria represents a major public-health threat. Phages constitute a promising alternative to chemical antibiotics due to their high host specificity, abundance in nature, and evolvability. However, phage host specificity means that highly diverse bacterial species are particularly difficult to target for phage therapy. This is the case of Klebsiella pneumoniae, which presents a hypervariable extracellular matrix capsule exhibiting dozens of variants. Here, we report four novel phages infecting K. pneumoniae capsular type K22 which were isolated from environmental samples in Valencia, Spain. Full genome sequencing showed that these phages belong to the Podoviridae family and encode putative depolymerases that allow digestion of specific K22 K. pneumoniae capsules. Our results confirm the capsular type-specificity of K. pneumoniae phages, as indicated by their narrow infectivity in a panel of K. pneumoniae clinical isolates. Nonetheless, this work represents a step forward in the characterization of phage diversity, which may culminate in the future use of large panels of phages for typing and/or for combating multi-drug-resistant K. pneumoniae.
DescriptionThis article belongs to the Special Issue Bacteriophage—Molecular Studies.
Publisher version (URL)https://doi.org/10.3390/ijms21020425
URIhttp://hdl.handle.net/10261/220895
DOI10.3390/ijms21020425
E-ISSN1422-0067
Appears in Collections:(I2SysBio) Artículos
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