Macrophage-toxic bacteria from patients with ulcerative colitis worsen gut inflammation in mice

Commensal Candida albicans enhances the virulence and dissemination of Salmonella enterica subsp. enterica serovar Typhimurium.

In a recent issue of Immunity, Qiu et al. uncover a pivotal role for commensal fungi in promoting lung fibrosis, showing that their interaction with alveolar macrophages triggers a profibrotic transcr...

Experiments in mouse models show that proper recovery of the intestinal microbiota following depletion, with or without faecal microbiota transplant therapy, is dependent on syntrophic interactions that occur only with specific dietary interventions.

Nature Reviews Gastroenterology & Hepatology, Published online: 22 April 2025; doi:10.1038/s41575-025-01063-xInflammatory bowel disease (IBD) is an immune-mediated disease with substantial burden worldwide. In this Consensus Statement, a global multidisciplinary group of experts identify key priorities and recommendations to raise awareness and advance IBD care and research.

Mucosal-associated invariant T (MAIT) cells are innate-like T cells predominantly located in barrier tissues such as the lung, liver, skin, and colon. These cells recognize metabolites derived from the riboflavin biosynthetic pathway, which can rapidly traverse epithelial barriers and be presented during MAIT cell differentiation in the thymus and maturation in peripheral tissues. Furthermore, microbial metabolites significantly influence MAIT cell functions in various conditions, including cancer. This review summarizes how the microbiota shapes the life trajectory of MAIT cells and their antitumor reactivity. Additionally, we discuss the therapeutic implications of manipulating the microbiota as a ‘bug-drug’ strategy to enhance MAIT cell antitumor immunity, particularly in mucosal cancers, while emphasizing challenges and future directions for integrating microbiota considerations into MAIT cell-based therapies.

Wang, Wilfahrt and colleagues show that phosphoethanolamine, a phospholipid intermediate, is enriched in tumour interstitial fluid and induces T cell dysfunction, in part by depleting diacylglycerol a...