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Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins
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Characterization of lytic Pseudomonas aeruginosa bacteriophages via biological properties and genomic sequences

Natia Karumidze1, Julie A Thomas, Nino Kvatadze

  • 1Eliava Institute of Bacteriophages, Microbiology and Virology, Tbilisi, Georgia.

Applied Microbiology and Biotechnology
|May 8, 2012
PubMed

Insights

Two new Pseudomonas phages, vB_Pae-Kakheti25 and vB_Pae-TbilisiM32, show promise for phage therapy against multidrug-resistant bacteria. Combining diverse phages may prevent bacterial resistance development.

Area of Science:

  • Microbiology
  • Virology
  • Bacteriology

Background:

  • Pseudomonas aeruginosa infections are a significant concern, particularly in immunocompromised individuals and those with diabetes.
  • The rise of multidrug-resistant strains necessitates alternative therapeutic strategies beyond conventional antibiotics.
  • Bacteriophages are emerging as a viable alternative for treating bacterial infections.

Purpose of the Study:

  • To characterize two novel, broad-host-range Pseudomonas phages, vB_Pae-Kakheti25 and vB_Pae-TbilisiM32, as candidates for phage therapy.
  • To evaluate their potential for use in combating multidrug-resistant Pseudomonas aeruginosa.

Main Methods:

  • Purification and characterization of two Pseudomonas phages.
  • Analysis of phage morphology, host range, growth properties, thermal stability, and serology.
  • Genomic sequencing and virion composition analysis.

Main Results:

  • vB_Pae-Kakheti25 (Siphoviridae) and vB_Pae-TbilisiM32 (Podoviridae) were successfully purified and characterized.
  • The phages exhibit distinct infection mechanisms and lack cross-antigenicity, representing diverse phage families.
  • Genomic and virion composition data were obtained for both phages.

Conclusions:

  • These two phages are suitable candidates for phage therapy applications.
  • Utilizing phage mixtures composed of members from different families, like these two, can reduce the incidence of bacterial resistance.
  • Phage therapy offers a promising alternative to antibiotics for treating Pseudomonas aeruginosa infections.

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