First Genome Description of Isolate Bearing NDM-1 from Blood Culture.

Microorganisms

Faculté de Pharmacie, Aix Marseille Université, IRD, APHM, MEPHI, IHU Méditerranée Infection, 19-21 Boulevard Jean Moulin, CEDEX 05, 13385 Marseille, France.

Published: August 2021

AI Article Synopsis

  • The paper presents the first complete genome sequence of a multidrug-resistant clinical strain isolated in the Democratic Republic of the Congo, which carries the NDM-1 gene for antibiotic resistance.
  • Researchers utilized advanced sequencing techniques (MiSeq and Gridion) to analyze the genome of a specific imipenem-resistant Gram-negative isolate, uncovering a large circular chromosome and plasmid.
  • Comparative genomic analysis showed significant genetic features, including multiple resistance genes, and revealed a need for improved clinical practices and surveillance to combat antibiotic resistance in the region.

Article Abstract

In this paper, we describe the first complete genome sequence of species, a clinical multidrug-resistant strain harboring the New Delhi Metallo-β-lactamase-1 (NDM-1) gene, isolated at the Kinshasa University Teaching Hospital, in Democratic Republic of the Congo. Whole genome sequencing of an imipenem-resistant clinical Gram-negative P8538 isolate was performed using MiSeq and Gridion, and then complete genome analysis, plasmid search, resistome analysis, and comparative genomics were performed. Genome assembly resulted in a circular chromosome sequence of 4,280,811-bp and 40.80% GC and a circular plasmid (pPV8538_NDM-1) of 151,684-bp and 51.93%GC, which was identified in an P8540 strain isolated in the same hospital. Interestingly, comparative genomic analysis revealed multiple sequences acquisition within the P8538 chromosome, including three complete prophages, a siderophore biosynthesis NRPS cluster, a Type VI secretion system (T6SS), a urease gene cluster, and a complete Type-I-F CRISPR-Cas3 system. Β-lactamase genes, including and , were found on the recombinant plasmid pPV8538_NDM-1, in addition to other antibiotic resistance genes such as , -, , , , --, , and . Genome comparison with species revealed 82.95% of average nucleotide identity (ANI), with species exhibiting 90.79% of proteome similarity. We report the first complete genome of species and for the first time the presence of the gene in this species. This work highlights the need to improve surveillance and clinical practices in DR Congo in order to reduce or prevent the spread of such resistance.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8398168PMC
http://dx.doi.org/10.3390/microorganisms9081751DOI Listing

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