1375-Bacteriocin-Mediated Colonization of BB in Human

This scientific research examines how specific Bifidobacterium breve strains successfully establish themselves in the human gut microbiome. By comparing bacteria sourced from infants and adults, the study identifies that colonization is primarily driven by unique accessory genes rather than universal genetic traits. A critical discovery is the role of the lanKC gene, which facilitates bacteriocin-mediated adaptation, allowing the bacteria to navigate and influence complex microbial networks. Through metagenomic sequencing and gene knockout experiments, the authors demonstrate that this genetic mechanism enhances the robustness and stability of the intestinal ecosystem. Ultimately, the findings highlight how strain-specific traits determine whether a probiotic can persist within the diverse environment of the adult digestive tract.

References:

• Wang J, Qian X, Li Q, et al. Bacteriocin gene-mediated ecological adaptation of Bifidobacterium breve in the adult human gut[J]. Cell Genomics, 2026, 6(4).