ArticleToxins2023
A Colonic Organoid Model Challenged with the Large Toxins of
Article in Toxins, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Subverting colonization resistance:Virulence · 2026Review
- Tormentil Rhizome Ethanolic Extract and Its Gut Microbiota-Derived Metabolites: Modulation of Tight Junction Integrity and Anti-Inflammatory Potential in Caco-2 Cells.Journal of agricultural and food chemistry · 2026Article
- Colonic epithelial regeneration shapes susceptibility tobioRxiv : the preprint server for biology · 2026Article
- Mechanistic Insights Into the Inhibition ofScientifica · 2026Article
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Authors and funding
10 authors.
Funding
Abstract
background
methodsHuman adult colon organoids were cultured on membrane inserts. Tight junction (TJ) proteins and actin cytoskeleton were analyzed for expression via Western blotting and via confocal laser-scanning microscopy for subcellular localization.
resultsPolarized intestinal organoid monolayers were established from stem cell-containing colon organoids to apply toxins from the apical side and to perform functional measurements in the organoid model. The toxins caused a reduction in transepithelial electrical resistance in human colonic organoid monolayers with sublethal concentrations. Concomitantly, we detected increased paracellular permeability fluorescein and FITC-dextran-4000. Human colonic organoid monolayers exposed to the toxins exhibited redistribution of barrier-forming TJ proteins claudin-1, -4 and tricellulin, whereas channel-forming claudin-2 expression was increased. Perijunctional F-actin cytoskeleton organization was affected.
conclusionsAdult stem cell-derived human colonic organoid monolayers were applicable as a colon infection model for electrophysiological measurements. The TJ changes noted can explain the epithelial barrier dysfunction and diarrhea in patients, as well as increased entry of luminal antigens triggering inflammation.
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