Novel small IncX3 plasmid carrying the bla KPC-2 gene in high-risk Klebsiella pneumoniae ST11/CG258

This study used whole-genome sequencing (WGS) and PFGE to analysis KPC-2-producing Klebsiella pneumoniae strains from clinical specimens collected in Brazilian hospitals. The study identifies the emergence of a novel small IncX3 plasmid (pKPB11), 12,757-bp in length, in a high-risk K. pneumoniae ST1...

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Veröffentlicht in:Diagnostic microbiology and infectious disease 2020-02, Vol.96 (2), p.114900
Hauptverfasser: Fuga, Bruna, Ferreira, Melina Lorraine, Cerdeira, Louise Teixeira, de Campos, Paola Amaral, Dias, Vinícius Lopes, Rossi, Iara, Machado, Luiz Gustavo, Lincopan, Nilton, Gontijo-Filho, Paulo Pinto, Ribas, Rosineide Marques
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container_issue 2
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container_title Diagnostic microbiology and infectious disease
container_volume 96
creator Fuga, Bruna
Ferreira, Melina Lorraine
Cerdeira, Louise Teixeira
de Campos, Paola Amaral
Dias, Vinícius Lopes
Rossi, Iara
Machado, Luiz Gustavo
Lincopan, Nilton
Gontijo-Filho, Paulo Pinto
Ribas, Rosineide Marques
description This study used whole-genome sequencing (WGS) and PFGE to analysis KPC-2-producing Klebsiella pneumoniae strains from clinical specimens collected in Brazilian hospitals. The study identifies the emergence of a novel small IncX3 plasmid (pKPB11), 12,757-bp in length, in a high-risk K. pneumoniae ST11/CG258 lineage, a successful clonal group in Brazil, carrying the bla gene on a non-Tn4401 genetic element (NTE -Ic). Comparative analysis of the pKPB11 showed that this plasmid reduced its size, losing part of its conjugation apparatus. The pKPB11 was also compared to another strain sequenced in this study (KPC89) that had the hybrid IncX3-IncU plasmid (pKP89), of approximately 45 kb in length, similarly carrying the bla gene on NTE -Ic. To the best of our knowledge, pKPB11 is the first example of small IncX3 plasmid found in a high-risk KPC-2-producing K. pneumoniae ST11/CG258.
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The study identifies the emergence of a novel small IncX3 plasmid (pKPB11), 12,757-bp in length, in a high-risk K. pneumoniae ST11/CG258 lineage, a successful clonal group in Brazil, carrying the bla gene on a non-Tn4401 genetic element (NTE -Ic). Comparative analysis of the pKPB11 showed that this plasmid reduced its size, losing part of its conjugation apparatus. The pKPB11 was also compared to another strain sequenced in this study (KPC89) that had the hybrid IncX3-IncU plasmid (pKP89), of approximately 45 kb in length, similarly carrying the bla gene on NTE -Ic. 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title Novel small IncX3 plasmid carrying the bla KPC-2 gene in high-risk Klebsiella pneumoniae ST11/CG258
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