Details

Autor(en) / Beteiligte

• Payros, Delphine
• Secher, Thomas
• Boury, Michèle
• Brehin, Camille
• Ménard, Sandrine
• Salvador-Cartier, Christel
• Cuevas-Ramos, Gabriel
• Watrin, Claude
• Marcq, Ingrid
• Nougayrède, Jean-Philippe
• Dubois, Damien
• Bedu, Antoine
• Garnier, Fabien
• Clermont, Olivier
• Denamur, Erick
• Plaisancié, Pascale
• Theodorou, Vassilia
• Fioramonti, Jean
• Olier, Maïwenn
• Oswald, Eric

Titel

Maternally acquired genotoxic Escherichia coli alters offspring's intestinal homeostasis

Ist Teil von

• Gut microbes, 2014-05, Vol.5 (3), p.313-512

Ort / Verlag

United States: Taylor & Francis

Erscheinungsjahr

2014

Quelle

Taylor & Francis Journals Auto-Holdings Collection

Beschreibungen/Notizen

• The neonatal gut is rapidly colonized by a newly dominant group of commensal Escherichia coli strains among which a large proportion produces a genotoxin called colibactin. In order to analyze the short- and long-term effects resulting from such evolution, we developed a rat model mimicking the natural transmission of E. coli from mothers to neonates. Genotoxic and non-genotoxic E. coli strains were equally transmitted to the offspring and stably colonized the gut across generations. DNA damage was only detected in neonates colonized with genotoxic E. coli strains. Signs of genotoxic stress such as anaphase bridges, higher occurrence of crypt fission and accelerated renewal of the mature epithelium were detected at adulthood. In addition, we observed alterations of secretory cell populations and gut epithelial barrier. Our findings illustrate how critical is the genotype of E. coli strains acquired at birth for gut homeostasis at adulthood.