Isolation and characterization of a novel Enterococcus faecalis bacteriophage phiEF24C as a therapeutic candidate

FEMS Microbiology Letters
|December 22, 2007
PubMed

Insights

Bacteriophage phiEF24C shows promise as a novel therapy against Vancomycin-resistant Enterococcus faecalis (VRE) infections. This virulent phage effectively lyses VRE strains, offering a potential alternative to antibiotics.

Area of Science:

  • Microbiology
  • Virology
  • Infectious Diseases

Background:

  • Nosocomial infections caused by Vancomycin-resistant Enterococcus faecalis (VRE) are a growing public health concern.
  • Bacteriophage (phage) therapy is being explored as a viable alternative to conventional antibiotics for treating VRE infections.

Discussion:

  • Phage phiEF24C, isolated from the environment, demonstrated broad host range and effective lytic activity against diverse Enterococcus faecalis strains, including VRE.
  • phiEF24C exhibits a shorter latent period and larger burst size compared to typical tailed phages, indicating potent lytic capabilities.
  • Morphological and genomic analyses classify phiEF24C as a large myovirus (Myoviridae, morphotype A1) with a 143 kbp double-stranded DNA genome.

Key Insights:

  • The plaque-forming ability of phiEF24C is largely independent of Enterococcus faecalis clinical host strain variations.
  • phiEF24C's characteristics suggest a close evolutionary relationship with other therapeutic myoviruses targeting Gram-positive bacteria.
  • The phage's efficient lytic activity and broad host range make it a strong candidate for VRE infection treatment.

Outlook:

  • Further research into phiEF24C's efficacy and safety profile is warranted for its clinical application.
  • phiEF24C represents a promising phage candidate for developing novel therapeutic strategies against VRE infections.
  • The study highlights the potential of environmental phage isolation for discovering new antimicrobial agents.

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