Evaluation of Bacteriophage Cocktails Alone and in Combination with Daptomycin against Daptomycin-Nonsusceptible Enterococcus faecium

  • Taylor Morrisette
  • , Katherine L. Lev
  • , Gregory S. Canfield
  • , Breck A. Duerkop
  • , Razieh Kebriaei
  • , Kyle C. Stamper
  • , Dana Holger
  • , Susan M. Lehman
  • , Smaranda Willcox
  • , Cesar A. Arias
  • , Michael J. Rybak

Research output: Contribution to journalArticlepeer-review

Abstract

Enterococcus faecium is a significant multidrug-resistant pathogen. Bacteriophage cocktails are being proposed to complement antibiotic therapy. After a screen of 8 E. faecium strains against 4 phages, 2 phages (113 and 9184) with the broadest host ranges were chosen for further experiments. Transmission electron microscopy, wholegenome sequencing, comparative genome analyses, and time-kill analyses were performed. Daptomycin (DAP) plus the phage cocktail (113 [myophage] and 9184 [siphopage]) showed bactericidal activity in most regimens, while DAP addition prevented phage 9184 resistance against daptomycin-nonsusceptible E. faecium.
Original languageEnglish
Article numbere01623-21
JournalAntimicrobial Agents and Chemotherapy
Volume66
Issue number1
DOIs
StatePublished - Jan 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2022 American Society for Microbiology.

ASJC Scopus Subject Areas

  • Pharmacology
  • Pharmacology (medical)
  • Infectious Diseases

Keywords

  • Bacteriophage cocktails
  • Bacteriophage-antibiotic combinations
  • Bacteriophages
  • Daptomycin
  • Enterococcus faecium

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