Suppression of enteric pathogens via bacteriocins

Suppression of enteric pathogens via bacteriocins is a protective mechanism in the gut where commensal microbes produce small, ribosomally synthesized peptides called bacteriocins to inhibit or kill pathogenic bacteria. This natural antagonism helps maintain gut health, prevents infections, and shapes the microbial ecosystem. The process is mediated by various species (notably Lactobacillus, Streptococcus, Clostridium, and Bacillus) that produce different classes and families of bacteriocins, which act through mechanisms such as pore formation, membrane disruption, resource competition, and modulation of the host immune response. This process underlies the concept of "colonization resistance" and is a major reason why probiotics and certain bacteriocins are studied as preventive or adjunctive therapies for gastrointestinal infections and dysbiosis.

Other names

Bacteriocin-mediated suppression of enteric pathogensGut microbial antagonism via bacteriocinsBacteriocin-driven colonization resistance

The mechanism involves direct killing or inhibition of pathogens via pore formation or membrane disruption by bacteriocins, niche exclusion by occupying space and resources to prevent pathogen colonization, and immune modulation through enhancement of host defenses against pathogens.