The team “intestinal inflammation” works exclusively on inflammatory bowel disease (IBD): Crohn’s Disease (CD) and ulcerative colitis (UC). The research is deliberately multidisciplinary with a multi-scale approach from the molecular level to patients. This is a translational research strongly associated with the gastroenterology units of Beaujon and Robert Debré hospitals. Projects aim to identify the genetic and environmental risk factors involved in these diseases and to define their interactions. The team developed original animal models to better understand the pathophysiology of IBD in particular the importance of abnormalities of endoplasmic reticulum (ER) stress and epigenetic factors (microRNAs, methylation, and acetylation) in UC and the innate immune response and function of the complex molecular “Nodosome” around Nod2 in CD. Finally, the team aim to develop new preventive and curative therapeutic approaches for IBD.