Transposon mutagenesis screen in Klebsiella pneumoniae identifies genetic determinants required for growth in human urine and serum
Klebsiella pneumoniae is a global public health concern due to the rising myriad of hypervirulent and multi-drug resistant clones both alarmingly associated with high mortality. The molecular microbial genetics underpinning these recalcitrant K. pneumoniae infections is unclear, coupled with the eme...
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Main Authors | , , , , , , , , , , , , , , , , , |
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Cold Spring Harbor
Cold Spring Harbor Laboratory Press
07.02.2024
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Abstract | Klebsiella pneumoniae is a global public health concern due to the rising myriad of hypervirulent and multi-drug resistant clones both alarmingly associated with high mortality. The molecular microbial genetics underpinning these recalcitrant K. pneumoniae infections is unclear, coupled with the emergence of lineages resistant to nearly all present day clinically important antimicrobials. In this study, we performed a genome-wide screen in K. pneumoniae ECL8, a member of the endemic K2-ST375 pathotype most often reported in Asia, to define genes essential for growth in a nutrient-rich laboratory medium (Luria-Bertani medium), human urine and serum. Through transposon directed insertion-site sequencing (TraDIS), a total of 427 genes were identified as essential for growth on LB agar, whereas transposon insertions in 11 and 144 genes decreased fitness for growth in either urine or serum, respectively. Genome-wide functional studies like these provide further knowledge on the genetics of this pathogen but also provide a strong impetus for discovering new antimicrobial targets to improve current therapeutic options for K. pneumoniae infections.Competing Interest StatementThe authors have declared no competing interest.Footnotes* This revised version contains revisions as suggested by eLife editorial team and reviewers: Updated manuscript text for typos and clarity New and revised figures Author list updated Supplementary files updated* https://drive.google.com/drive/folders/1xTuNvlcuN1Vztn5_WteEuc9zsgT9CZS1?usp=sharing |
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AbstractList | Klebsiella pneumoniae is a global public health concern due to the rising myriad of hypervirulent and multi-drug resistant clones both alarmingly associated with high mortality. The molecular microbial genetics underpinning these recalcitrant K. pneumoniae infections is unclear, coupled with the emergence of lineages resistant to nearly all present day clinically important antimicrobials. In this study, we performed a genome-wide screen in K. pneumoniae ECL8, a member of the endemic K2-ST375 pathotype most often reported in Asia, to define genes essential for growth in a nutrient-rich laboratory medium (Luria-Bertani medium), human urine and serum. Through transposon directed insertion-site sequencing (TraDIS), a total of 427 genes were identified as essential for growth on LB agar, whereas transposon insertions in 11 and 144 genes decreased fitness for growth in either urine or serum, respectively. Genome-wide functional studies like these provide further knowledge on the genetics of this pathogen but also provide a strong impetus for discovering new antimicrobial targets to improve current therapeutic options for K. pneumoniae infections.Competing Interest StatementThe authors have declared no competing interest.Footnotes* This revised version contains revisions as suggested by eLife editorial team and reviewers: Updated manuscript text for typos and clarity New and revised figures Author list updated Supplementary files updated* https://drive.google.com/drive/folders/1xTuNvlcuN1Vztn5_WteEuc9zsgT9CZS1?usp=sharing |
Author | Milner, Mathew T Collins, Christy Rooke, Jessica Lund, Peter A Schneiders, Thamarai Henderson, Ian R Von Vergel L Torres Mckeand, Samantha A Wetherall, Laura Bryant, Jack A Emily Ca Goodall Zheng, Jie Lian Dunne, Karl Icke, Christopher Cunningham, Adam F Scales, Danielle Cole, Jeffrey A Gray, Jessica |
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SubjectTerms | Antimicrobial agents Drug resistance Genomes Klebsiella pneumoniae Multidrug resistance Public health Transposon mutagenesis Transposons Urine |
Title | Transposon mutagenesis screen in Klebsiella pneumoniae identifies genetic determinants required for growth in human urine and serum |
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