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Published on: August 19, 2021
Novel lytic bacteriophage vB_GEC_EfS_9 against Enterococcus faecium
S Rigvava1, I Kusradze2, I Tchgkonia3
1G Eliava Institute of Bacteriophage, Microbiology and Virology, Tbilisi, Georgia; Caucasus International University, Tbilisi, Georgia.
Abstract:
Enterococcus spp. is a common commensal microorganism, however, some strains can cause opportunistic infections in humans. Treatment of Enterococcus faecium-related endocarditis, urinary and genital tract infections, meningitis, septicemia, and even neonatal sepsis is often complicated by antibiotic resistance. The spread of multi-resistant bacterial strains has renewed interest in phage therapy, which has many advantages: Its advantages include a much lower frequency of resistance development compared to antibiotics and strict specificity, which allows affecting of only their target microbes without disturbing necessary microbiome. We isolated and characterized a virulent bacteriophage which is active against Enterococcus faecium clinical strains. The phage, which was designated as vB_GEC_EfS_9 was studied in terms of its growth pattern and adsorption rate, as well as its host range. The whole genome of the phage was sequenced and analyzed. Obtained results indicate that phage vB_GEC_EfS_9 is a virulent phage which has a very good potential for therapeutic use against strains of E. faecium.
Insights
Researchers discovered a virulent bacteriophage, vB_GEC_EfS_9, effective against antibiotic-resistant Enterococcus faecium strains. This phage shows significant potential for phage therapy, offering a specific and novel treatment approach for challenging infections.
Area of Science:
- Microbiology
- Infectious Diseases
- Bacteriophage Therapy
Background:
- Enterococcus faecium causes opportunistic infections, with treatment complicated by rising antibiotic resistance.
- The emergence of multi-drug resistant bacteria necessitates alternative therapeutic strategies.
- Phage therapy offers a promising alternative due to its specificity and lower resistance development.
Purpose of the Study:
- To isolate and characterize a virulent bacteriophage active against clinical strains of Enterococcus faecium.
- To evaluate the therapeutic potential of the isolated phage against antibiotic-resistant E. faecium.
Main Methods:
- Isolation and characterization of a virulent bacteriophage, vB_GEC_EfS_9.
- Analysis of phage growth pattern, adsorption rate, and host range.
- Whole genome sequencing and analysis of the bacteriophage.
Main Results:
- Phage vB_GEC_EfS_9 was isolated and confirmed as virulent against Enterococcus faecium.
- Characterization revealed specific properties suitable for therapeutic application.
- Genome sequencing provided insights into the phage's genetic makeup.
Conclusions:
- Phage vB_GEC_EfS_9 demonstrates significant potential for therapeutic use against Enterococcus faecium infections.
- This bacteriophage represents a viable candidate for developing novel treatments for antibiotic-resistant E. faecium.
- Phage therapy offers a targeted approach to combatting resistant bacterial infections.
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