Abstract
A widely recognized benefit of gut microbiota is that it provides colonization resistance against enteric pathogens. The gut microbiota and their products can protect the host from invading microbes directly via microbe-pathogen interactions and indirectly by host-microbiota interactions, which regulate immune system function. In contrast, enteric pathogens have evolved mechanisms to utilize microbiota-derived metabolites to overcome colonization resistance and increase their pathogenic potential. This review will focus on recent studies of metabolism-mediated mechanisms of colonization resistance and virulence strategies enteric pathogens use to overcome them, along with how induction of inflammation by pathogenic bacteria changes the landscape of the gut and enables alternative metabolic pathways. We will focus on how intestinal pathogens counteract the protective effects of microbiota-derived metabolites to illustrate the growing appreciation of how metabolic factors may serve as crucial virulence determinants and overcome colonization resistance.
Published Version
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