Bacterial Adaptation to Venom in Snakes and Arachnida

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  • Elham Esmaeilishirazifard
    University of Westminster, London
  • Louise Usher
    University of Westminster, London
  • Carol Trim
    Canterbury Christ Church University
  • Vartul Sangal
    Northumbria University
  • Gregory F. Tyson
    Center for Veterinary Medicine, Maryland
  • Axel Barlow
    University of Potsdam
  • Keith F. Redway
    University of Westminster, London
  • John D. Taylor
    University of Westminster, London
  • Myrto Kremida-Vlachou
    University of Westminster, London
  • Sam Davies
    Northumbria University
  • Teresa D. Loftus
    Venomtech, Ltd., Sandwich, Kent
  • Mikaella M.G. Lock
    Venomtech, Ltd., Sandwich, Kent
  • Kstir Wright
    University of Westminster, London
  • Andrew Dalby
    University of Westminster, London
  • Lori A.S. Snyder
    Kingston University
  • Wolfgang Wüster
  • Steve Trim
    Venomtech, Ltd., Sandwich, Kent
  • Sterghios A. Moschos
    University of Westminster, London
Animal venoms are considered sterile sources of antimicrobial compounds with strong membrane-disrupting activity against multidrug-resistant bacteria. However, venomous bite wound infections are common in developing nations. Investigating the envenomation organ and venom microbiota of five snake and two spider species, we observed venom community structures that depend on the host venomous animal spe- cies and evidenced recovery of viable microorganisms from black-necked spitting cobra (Naja nigricollis) and Indian ornamental tarantula (Poecilotheria regalis) venoms. Among the bacterial isolates recovered from N. nigricollis, we identified two venom-resistant, novel sequence types of Enterococcus faecalis whose genomes feature 16 virulence genes, indicating infectious potential, and 45 additional genes, nearly half of which improve bacterial membrane integrity. Our findings challenge the dogma of venom ste- rility and indicate an increased primary infection risk in the clinical management of ven- omous animal bite wounds.

Keywords

  • drug resistance evolution, extremophiles, genome analysis, microbiome, multidrug resistance, venom
Original languageEnglish
Article numbere0240821
Number of pages16
JournalMicrobiology Spectrum
Volume10
Issue number3
Early online date23 May 2022
DOIs
Publication statusPublished - 29 Jun 2022

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