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Functional and genetic adaptations contributing to

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    This study sequenced Enterococcus faecalis from women's urine, revealing genetic adaptations for urinary tract survival and potential gut-urinary connections. Findings highlight new targets for combating urinary tract infections (UTI).

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    Area of Science:

    • Microbiology and Genomics
    • Infectious Diseases
    • Urology

    Background:

    • Enterococcus faecalis is a leading cause of urinary tract infections (UTIs), particularly in women, with adaptation mechanisms poorly understood.
    • Recurrent UTIs in postmenopausal women significantly impact quality of life and pose health risks, necessitating novel therapeutic strategies.
    • Understanding pathogen adaptation is crucial for developing new treatments against rising antimicrobial resistance.

    Approach:

    • Generated high-quality genome assemblies for 37 clinical E. faecalis strains from postmenopausal women's urine.
    • Performed comparative genomics linking urinary strains to gastrointestinal (GIT) and blood isolates.
    • Analyzed antimicrobial resistance and identified candidate genes potentially involved in urinary tract (UT) adaptation.

    Key Points:

    • Phylogenetic analysis showed closer relatedness between urine and gut E. faecalis isolates than blood isolates.
    • Shared plasmid replicon types between urine and gut strains suggest a potential urinary-gastrointestinal tract interconnection.
    • Identified 19 candidate genes enriched in urinary strains, implicated in nutrient transport, metabolism, and gene regulation for UT adaptation.

    Conclusions:

    • E. faecalis exhibits genetic diversity and specific adaptations for survival within the urinary tract environment.
    • The study provides insights into the potential gut-urinary tract link in E. faecalis colonization.
    • Identified candidate genes offer potential targets for novel therapies against E. faecalis UTIs.