Colibactin genes are highly prevalent in the developing infant gut microbiome
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Early-life exposure to colibactin-producing pks + gut bacteria is hypothesized to imprint mutations on the colorectal epithelium, increasing the risk of colorectal cancer later in life. We demonstrate an extremely high prevalence of pks+ bacteria (>50% of infants) during the first two years of life, suggesting carriage is likely normal during early-life microbiome development. Further research is needed into the conditions in which carriage can lead to mutagenesis.
