Characterization of five newly isolated bacteriophages active against Pseudomonas aeruginosa clinical strains
Magdalena Kwiatek1, Lidia Mizak, Sylwia Parasion
1Biological Threat Identification and Countermeasure Centre, Military Institute of Hygiene and Epidemiology, Lubelska 2, 24-100, Puławy, Poland, magda.kwiatek09@gmail.com.
Abstract:
Pseudomonas aeruginosa is an opportunistic pathogen that causes serious infections, especially in patients with immunodeficiency. It exhibits multiple mechanisms of resistance, including efflux pumps, antibiotic modifying enzymes and limited membrane permeability. The primary reason for the development of novel therapeutics for P. aeruginosa infections is the declining efficacy of conventional antibiotic therapy. These clinical problems caused a revitalization of interest in bacteriophages, which are highly specific and have very effective antibacterial activity as well as several other advantages over traditional antimicrobial agents. Above all, so far, no serious or irreversible side effects of phage therapy have been described. Five newly purified P. aeruginosa phages named vB_PaeM_WP1, vB_PaeM_WP2, vB_PaeM_WP3, vB_PaeM_WP4 and vB_PaeP_WP5 have been characterized as potential candidates for use in phage therapy. They are representatives of the Myoviridae and Podoviridae families. Their host range, genome size, structural proteins and stability in various physical and chemical conditions were tested. The results of these preliminary investigations indicate that the newly isolated bacteriophages may be considered for use in phagotherapy.
Insights
New bacteriophages show promise for treating Pseudomonas aeruginosa infections. These phages offer a potential alternative to antibiotics due to their specificity and safety profile in early studies.
Area of Science:
- Microbiology
- Infectious Diseases
- Biotechnology
Background:
- Pseudomonas aeruginosa is a significant opportunistic pathogen causing severe infections, particularly in immunocompromised individuals.
- Increasing antibiotic resistance in P. aeruginosa necessitates the development of novel therapeutic strategies.
- Bacteriophage therapy is emerging as a viable alternative due to its specificity and favorable safety profile.
Purpose of the Study:
- To characterize newly isolated bacteriophages targeting Pseudomonas aeruginosa.
- To evaluate their potential as candidates for phage therapy.
Main Methods:
- Isolation and purification of five novel P. aeruginosa phages (vB_PaeM_WP1-WP4 and vB_PaeP_WP5).
- Characterization of phage host range, genome size, structural proteins, and stability under various conditions.
- Assessment of Myoviridae and Podoviridae family representatives.
Main Results:
- Five distinct bacteriophages effective against P. aeruginosa were identified.
- Preliminary data on host range, genome, proteins, and stability were obtained.
- The isolated phages belong to the Myoviridae and Podoviridae families.
Conclusions:
- The newly characterized P. aeruginosa phages demonstrate potential for therapeutic applications.
- These findings support the further investigation of these bacteriophages in phage therapy protocols.
- Phage therapy presents a promising avenue for combating P. aeruginosa infections.
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