Targeting DDR1 and DDR2 overcomes matrix-mediated melanoma cell adaptation to BRAF-targeted therapy

To investigate the contribution of fibroblast-derived extracellular matrices (ECMs) to the resistance to targeted therapies in BRAF-mutated melanoma cells, we generated native-like 3D ECMs from human primary fibroblasts obtained from healthy individuals or melanoma patients. Cell-derived matrices from human dermal fibroblasts (HDF), skin melanoma associated fibroblasts (MAF) and two different lymph node fibroblast reticular cells (FRC) were denuded of cells and their composition was analyzed by mass spectrometry.