Scientists Discover How Immune Cells Protect the Gut From Dangerous Inflammation

Scientists have uncovered an important biological mechanism that protects the intestines from potentially dangerous inflammation, offering new hope for understanding conditions such as inflammatory bowel disease and certain autoimmune disorders. Researchers at St. Jude Children's Research Hospital in the United States discovered that a gene-regulating pathway known as COMPASS helps specialized immune cells, called regulatory T cells, prevent the body from attacking beneficial bacteria naturally living in the gut. Published in Science Advances on 28 October 2026, the study identified a gene called Wdr82 as essential to this protective process. When researchers disabled the gene in mice, the animals developed severe intestinal inflammation and autoimmune reactions, with some effects extending to the heart and lungs. Remarkably, introducing healthy regulatory T cells restored protection and prevented the fatal complications observed in untreated mice. The discovery reveals how the immune system maintains a delicate balance between fighting harmful infections and tolerating friendly bacteria. Although the findings are based on laboratory and animal experiments, researchers believe they could eventually help identify new treatment targets for inflammatory bowel disease, food allergies and other immune-related conditions. The breakthrough provides valuable insight into how the body protects digestive health and could guide the development of more precise anti-inflammatory therapies.