What question did this study set out to answer?

The aim is to understand how E. coli impacts inflammation and B cell responses in Crohn’s Disease.

DOP137Unravelling E. coli-driven inflammatory signatures and mucosal B cell responses in Crohn’s Disease via integrative multi-omics

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Analysis reveals E. coli-driven inflammation and unique B cell responses in Crohn’s Disease, suggesting targeted therapeutic options.

The aim is to understand how E. coli impacts inflammation and B cell responses in Crohn’s Disease.
Analyzed intestinal microbiota using 16S rRNA sequencing in CD patients and controls.
Conducted single-cell RNA and V(D)J sequencing on surgical ileal tissue samples.
Profiled mucosal B cell compartments with high-dimensional spectral flow cytometry.
Validated cellular composition with immunofluorescence on tissue slides.
Found reduced alpha diversity in mucus-associated microbiota of CD patients.
Identified marked expansion of E. coli in certain patients with ileal involvement.
Observed reconfiguration of the B cell compartment in inflamed gut areas.
Noted distinct inflammatory cell modules linked to E. coli expansion and extensive IgG clonal expansion.

Vique et al. (2026) studied this question.

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