Cure8 research brief
The work links fungal strain variation to differences in adhesion and immune recognition, which could help explain why a normally food-associated yeast is found in Crohn disease ulcers and point to microbial features that matter for host–microbe interactions in IBD.
Researchers studying the gut microbiome and fungal (mycobiome) contributions to IBD, clinicians interested in emerging microbial contributors to Crohn disease, and informed patients curious about research on microbes found in IBD tissue.
Researchers developed genetic tools for D. hansenii and performed a forward genetic screen that linked loss of a subtelomeric Hyr/Iff-like adhesin (Hil1) to changes in colony morphology and reduced adhesion/biofilm formation.
Comparative genomics showed variation in tandem-repeat alleles of Hil1 between food strains and CD-derived strains: longer alleles were associated with stronger biofilm formation, while patient isolates tended to have shorter alleles and reduced surface binding.
Serology from CD patients detected Hil1-reactive IgG, suggesting that Hil1 is an antigenic target and that strain differences in this adhesin could shape host immune responses and fungal behavior in food versus disease contexts.
This is a laboratory-based, basic-science study reported as an abstract from mBio; findings characterize strain genetics and immune reactivity but do not establish causation for disease. The content depth is an abstract summary of experimental work rather than clinical results.
Review the original publication for the complete reporting, methods, and context.
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