Journal
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
Volume 65, Issue 8, Pages -Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AAC.00206-21
Keywords
metallo-beta-lactamase; VMB-2; plasmid; transposon
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Funding
- National Natural Science Foundation of China [31872523]
- Fundamental Research Funds for the Central Universities [2019B04014]
- Natural Science Foundation of Jiangsu Province [BK20180900]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Through experiments and analysis, we identified a carbapenem-resistant Vibrio diabolicus strain of shrimp origin carrying a novel MBL gene that confers resistance to multiple antibiotics. The discovery of this resistance gene on a plasmid raises concerns about further transmission to clinical Enterobacterales strains.
Here, we characterized a carbapenem-resistant Vibrio diabolicus strain of shrimp origin with various experiments and bioinformatics analysis. A novel metallo-beta-lactamase (MBL) gene, bla(VMB-2), that confers resistance to beta-lactams, including meropenem and cephalosporins, was identified on a plasmid-borne composite transposon, ISShfr9-ISCR1-bla(VMB-2)-bla(CARB-12)-aadA1-ISShfr9, which is capable of generating a bla(VMB-2)-bearing circular intermediate. ISShfr9 was found to be disseminated in multidrug-resistant (MDR) pathogens, arousing the concern of further transmission of a bla(VMB-2)-bearing circular intermediate to clinical Enterobacterales strains via such insertion sequences, which warrants further investigations.
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