Abstract
Objective: comprehensive analysis of the spectrum of antibacterial action of bactеriocins.Material and methods. Chemomicrobiome analysis of bacteriocins A/B, C, S, 28b, RS-2020 was performed to assess the minimum inhibitory concentration (MIC) values for 152 strains of pathogenic bacteria and the area under the growth curve (AUC) values for a representative sample of normobiota (38 human commensal bacteria).Results. Compared to other molecules, bacteriocin C was characterized by lower MIC constants for a wide range of pathogenic bacterial strains. Thus, it more effectively inhibited strains of pathogens of bacterial pneumonia (H. influenzae, S. mutans, S. pneumoniae, S. pyogenes), nosocomial infections (K. pneumoniae, P. aeruginosa, S. aureus, S. epidermidis, S. pneumoniae), skin diseases (M. audouinii, T. mentagrophytes, etc.), urinary tract infections (E. cloacae, P. mirabilis and P. vulgaris), Fusobacterium necrophorum and Candida fungi. At the same time, bacteriocin C to a lesser extent than the reference molecules inhibited the growth of the normophysiological microbiota of the Bacteroides, Enterococcus genera, non-pathogenic Escherichia, yeast S. cerevisiae and others. By stimulating butyrate (butyric anion) producing microorganisms, bacteriocin C can exhibit prebiotic properties.Conclusion. The main structural features of the bacteriocin C molecule associated with the antibacterial effect on pathogenic microbiota were identified and described.
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