Genome sequence and genomic analysis of liver abscess caused by hypervirulent Klebsiella pneumoniae

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Hypervirulent Klebsiella pneumoniae (hvKp) is an important pathotype with enhanced virulence features compared with classical K. pneumoniae (cKp). hvKp usually causes life-threatening infections in the community, often affecting young and healthy individuals. During the past few decades, hvKp-induced liver abscess has been increasingly reported in Asia and is emerging as a global disease. To better comprehend the molecular characteristics of hvKp-induced liver abscess and recognize the global dissemination of hypervirulent strains with resistance determinants, we sequenced the whole genome of 26 K. pneumoniae strains from patients with liver abscess (KLA) and investigated the clinical factors related to different phenotype groups. The epidemiology, virulence-related factors, and antimicrobial resistance determinants were also discussed. The age, gender, and whether being hospitalized showed no differences among the string-positive and -negative groups were also studied. The assembly and annotation suggested that most of the 26 new liver abscess-causing hvKp strains were ST23-K1 or ST86-K2, and only one of the strains exhibited multidrug resistance. Compared with the existing 36 global liver abscess genome sequences, higher sequence type and virulence gene diversity were found in the new genomes. The clinical characteristics and genomic data of the isolated strains will enrich our knowledge for comparative genomic studies, allowing the better understanding of hvKp characteristics and evolution.
OriginalsprogEngelsk
Artikelnummer76
Tidsskrift3 Biotech
Vol/bind13
Udgave nummer3
Antal sider7
ISSN2190-572X
DOI
StatusUdgivet - 2023

Bibliografisk note

Funding Information:
This work was supported by National Natural Science Foundation of China [Grant number 81672066 to WL]. This work was also supported by China National GeneBank (CNGB).

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1F1A1056113, 2022R1A2C1003218).

Publisher Copyright:
© 2023, The Author(s).

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