953-Early Fibrotic Niches in Lung Tumour Initiation

Paper Talk · May 12, 2026 · 22m

This research explores how oncogenic mutations in lung stem cells initiate a self-sustaining circuit that transforms the surrounding environment before tumors fully develop. Using single-cell analysis and organoid models, scientists discovered that KrasG12D-mutant cells release a protein called amphiregulin, which triggers a fibrotic, injury-like response in neighboring fibroblasts. These reprogrammed fibroblasts then cause resident alveolar macrophages to expand and shift into an inflammatory, immunosuppressive state. This reciprocal communication creates a tumor-permissive niche that…