ArticleBMC genomics2025
Genomic insights and epidemiology of mcr-1-Carrying Escherichia albertii isolated from agricultural soil in China.
Article in BMC genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Emergence of a KL239-OCL6-ST63 Carbapenem-Resistant Acinetobacter pittii Strain, Co-carrying blaCurrent microbiology · 2026Article
- mcr gene family evolution and structural mechanisms of colistin resistance: from mcr-1 to emerging variants.Archives of microbiology · 2026Review
- Convergence of Carbapenem and Colistin Resistance in IntestinalInfection and drug resistance · 2026Article
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14 authors.
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Abstract
backgroundPolymyxins are critical in treating multidrug-resistant Gram-negative bacteria infections, yet their overuse has spurred the emergence of polymyxin-resistant pathogens globally. This study aims to analyze the genomic characteristics of the Escherichia albertii strain 6S-65-1 carrying the mcr-1 gene and to investigate the global epidemiology of mcr-1-carrying E. albertii strains.
resultsIn this study, we identified and analyzed a polymyxin-resistant Escherichia albertii strain (6S-65-1) carrying the mcr-1 gene, isolated from agricultural soil in China. Whole-genome sequencing and comparative genomic analyses revealed two chromosomal integrations of the mcr-1 gene within Tn6330 transposon structures, indicating its capacity for horizontal gene transfer. Strain 6S-65-1 also harbors other antimicrobial resistance genes, including tet(A), sul3, and aph (3')-Ia, enhancing its resistance profile. Comparative genomic analysis of E. albertii genomes in the NCBI database revealed that mcr-1-carrying E. albertii strains are geographically restricted to China and Japan, and have been isolated from both animals and humans. Phylogenetic analysis revealed that strain 6S-65-1 was most closely related to a human-derived strain from Japan (SAMD00164101), with both strains carried virulence genes (cdt, paa, and eae) that enable them to form attaching and effacing (A/E) lesions. Among all publicly available ST4619 E. albertii genomes, strain 6S-65-1 is the first to carry the mcr-1 gene.
conclusionOur findings offer new insights into the epidemiology and genomic features of mcr-1-carrying E. albertii, underscoring the need for targeted management strategies to curb its spread. These findings underscore the importance of "One Health" approaches to antimicrobial resistance, which require coordinated efforts across human, animal and the environmental health sectors.
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