Characterization and genome analysis of novel Klebsiella phage Henu1 with lytic activity against clinical strains of Klebsiella pneumoniae
Archives of Virology(2019)
摘要
Klebsiella pneumoniae is an important human pathogen that is associated with a wide range of diseases, including pneumonia and septicemia. Because of the threat of drug-resistant K. pneumoniae to humans, especially carbapenem-resistant K. pneumoniae, which is becoming a growing threat to hospitalized patients, the potential use of phage therapy has generated considerable interest. Henu1, isolated from a sewage sample, was identified as a linear double-stranded DNA phage of 40,352 bp with 53.14% G + C content and 143-bp terminal repeats. The Henu1 genome contains 45 open reading frames, and no tRNA genes were found. K. pneumoniae clinical strains with the capsular types K-1, K-2, and K-57 could be infected by Henu1. No human-virulence-related genes or lysogen-formation gene clusters were detected in this phage genome, suggesting that Henu1 is a virulent phage in its bacterial host and is safe for humans.
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关键词
novel klebsiella phage henu1,lytic activity,clinical strains,genome analysis
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