Colonization of the infant gut by commensal bacteria profoundly influences immune development and can thus have significant long-term consequences: promoting durable tolerance to environmental antigens or driving Inflammatory Bowel Disease (IBD). Despite the importance of this process for health, how immune responses to the microbiota are regulated during early life remain a significant gap in […]
Ulcerative colitis (UC) is a chronic inflammatory disorder that affects the colon. There are multiple types of cells that drive inflammation and injury to the lining of the colon. Vedolizumab (VDZ) is a medication that blocks circulating immune cells from gaining access to the colon, but there are conflicting data about the primary cell types […]
The human gut microbiome has a profound impact on gut immunity in health and disease. Host-microbe interactions play a key role in Inflammatory Bowel Diseases (IBD), including Crohn’s disease and ulcerative colitis. Microbial-induced immune pathways are plausible targets for intervention in IBD. Protists are unicellular organisms that commonly inhabit the human gut. Presently, the most […]
Ulcerative colitis (UC) is characterized by non-resolving pathological inflammation leading to erosion of the colon tissue. Recent studies analyzing gene expression signatures in UC patients highlighted specific colonic fibroblast populations that may contribute to inflammation and disease progression. While these studies emphasize the proinflammatory function of activated intestinal fibroblasts, it is unknown whether subsets of […]
Inflammatory Bowel Diseases (IBDs) are typified by bouts of inflammation-induced epithelial damage and repair. By take cues from their microenvironment or “niche”, intestinal stem cells (ISCs) direct these fluctuating pathological and reparative states in IBD. Yet, we do not understand which cells comprise the inflamed ISC niche and how they switch on programs of repair. […]
Knowledge of the intestinal microbiota has transformed medical science, but not the treatment of Inflammatory Bowel Disease (IBD). The microbiota is difficult to use clinically because current analytical methods provide outputs that are too complex to provide useful data during an acute IBD flare. To solve these issues, we have developed a novel methodology, “MicFly,” […]
The bacteria in the human colon can influence gastrointestinal lining cells (intestinal epithelial cells (IECs)) and immune cells within the intestines and throughout the body. One way that bacteria do this is through their metabolites, the chemicals they produce. By influencing IECs and immune cells, gut bacterial metabolites affect resistance and susceptibility to Inflammatory Bowel […]
Inappropriate and chronic inflammatory responses underly the development of Inflammatory Bowel Diseases (IBD), including both ulcerative colitis and Crohn’s disease. This process is an intertwined, inter-cellular cascade among diverse immune cells and tissue stroma. The interactions between immune and stromal cells not only propagate inflammatory responses but also regulate resolution of inflammation. Yet, we do […]
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