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Nonlinear regulatory dynamics of bacterial restriction-modification systems modulates horizontal gene transfer susceptibility.
Nucleic Acids Res
January 2025
Quantitative Biology Group, University of Belgrade - Faculty of Biology, Studentski trg 16, Belgrade11000, Serbia.
Type II restriction-modification (R-M) systems play a pivotal role in bacterial defense against invading DNA, influencing the spread of pathogenic traits. These systems often involve coordinated expression of a regulatory protein (C) with restriction (R) enzymes, employing complex feedback loops for regulation. Recent studies highlight the crucial balance between R and M enzymes in controlling horizontal gene transfer (HGT).
View Article and Find Full Text PDFMicroplastics mediates the spread of antimicrobial resistance plasmids via modulating conjugal gene expression.
Environ Int
January 2025
Ineos Oxford Institute for Antimicrobial Research, Department of Biology, University of Oxford, Oxford OX1 3RE, United Kingdom. Electronic address:
Antimicrobial resistance (AMR) and environmental degradation are existential global public health threats. Linking microplastics (MPs) and AMR is particularly concerning as MPs pollution would have significant ramifications on controlling of AMR; however, the effects of MPs on the spread and genetic mechanisms of AMR bacteria remain unclear. Herein, we performed Simonsen end-point conjugation to investigate the impact of four commonly used MPs on transfer of clinically relevant plasmids.
View Article and Find Full Text PDFPersistent, Private and Mobile genes: a model for gene dynamics in evolving pangenomes.
Mol Biol Evol
January 2025
Center for Interdisciplinary Research in Biology (CIRB), College de France, CNRS, INSERM, Université PSL, Paris, France.
The pangenome of a species is the set of all genes carried by at least one member of the species. In bacteria, pangenomes can be much larger than the set of genes carried by a single organism. Many questions remain unanswered regarding the evolutionary forces shaping the patterns of presence/absence of genes in pangenomes of a given species.
View Article and Find Full Text PDFResistome and plasmidome genomic features of mcr-1.1-harboring E. coli: a One Health approach.
J Appl Microbiol
January 2025
Hospital de Clínicas de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.
Aims: This study evaluated the phenotypic and genotypic traits of mcr-1.1-harboring Escherichia coli isolates from chickens, pigs, humans, and farm environments. The resistome and the mobile genetic elements associated with the spread of mcr-1.
View Article and Find Full Text PDFVirulence factor discovery identifies associations between the Fic gene family and Fap2 fusobacteria in colorectal cancer microbiomes.
mBio
January 2025
Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.
is a bacterium associated with colorectal cancer (CRC) tumorigenesis, progression, and metastasis. Fap2 is a fusobacteria-specific outer membrane galactose-binding lectin that mediates adherence to and invasion of CRC tumors. Advances in omics analyses provide an opportunity to profile and identify microbial genomic features that correlate with the cancer-associated bacterial virulence factor Fap2.
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