Activation of DR3 signaling causes loss of ILC3s and exacerbates intestinal inflammation

Group 3 innate lymphoid cells (ILC3s) have important functions in inflammatory bowel disease. Here, the authors show that TL1A/DR3 signalling stimulates ILC3s to produce GM-CSF, thereby recruiting inflammatory cells, which results in subsequent IL-23-dependent loss of ILC3s and further intestinal inflammation.