eLife Assessment
This important study demonstrates that nutrient stress engenders metabolic vulnerabilities in pancreatic ductal adenocarcinoma (PDAC). By combining cell line and mouse models, the authors provide compelling evidence showing that arginine depletion from the microenvironment disrupts lipid homeostasis in PDAC resulting in ferroptosis upon exposure of tumors to polyunsaturated fatty acids. This report is likely to be of broad interest to researchers interested in studying cancer biology, metabolic adaptations and stress responses.