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Accession IconGSE63880

Modeling Clostridium difficile infections

Organism Icon Homo sapiens
Sample Icon 20 Downloadable Samples
Technology Badge Icon Affymetrix Human Human Exon 1.0 ST Array (huex10st)

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Clostridium difficile (Cd) is a gram-positive, spore-forming bacterium and the primary cause of nosocomial diarrhea and pseudomembranous colitis. The pathogenicity of Cd has been linked to its production of TcdA and TcdB. While they cause fluid secretion, inflammation, and colonic damage, their respective and synergistic roles have been difficult to ascertain. In infection animal model, TcdB has been demonstrated to be a key virulence factor, and TcdB causes obvious damage in human and porcine colonic explants. Using the colonic epithelia derived from cloned colonic stem cells, we have developed a model to test the response to TcdB. Epithelia generated in air-liquid interface cultures from cloned transverse colon stem cells were challenged with TcdB at different concentrations and durations.
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