1476-ILC2 Regulates Pancreatic Fibroblast Progenitor Niches

This research article identifies Group 2 innate lymphoid cells (ILC2s) as essential architects of the pancreatic fibroblast landscape, maintaining organ health and responding to injury. The study reveals that ILC2s reside in a specific interstitial niche where they communicate with Pi16+Dpp4+Ly6c+ fibroblasts, a unique subset with progenitor capabilities. When activated by the alarmin IL-33, ILC2s release IL-13 to stimulate the proliferation of these precursors, which subsequently differentiate into mature fibroblasts to repair tissue. The researchers also discovered that this immune-stromal axis expands during the early stages of pancreatic cancer, influencing the development of cancer-associated fibroblasts. Furthermore, the article describes how tissue-resident macrophages provide a necessary balance by regulating fibroblast numbers through phagocytosis. Ultimately, the findings establish ILC2s as local choreographers that set inflammatory thresholds and govern fibroblast topography in both healthy and pathological states.References:Yip T, Stockis J, Simpson C, et al. ILC2s regulate a fibroblast progenitor niche in the pancreas[J]. Science, 2026, 393(6806): eaea5113.前往小宇宙评论区与主播互动