Fig. 1: Metabolic pathways driving the ferroptosis-susceptible state in response to cystine starvation in cancer cells.
From: Multifaceted mechanisms mediating cystine starvation-induced ferroptosis

GSH glutathione (reduced), GPX4 glutathione peroxidase 4, GCLC glutamate-cysteine ligase catalytic subunit, GSS glutathione synthetase, TFRC transferrin receptor, NFS1 cysteine desulfurase, Fe–S cluster iron–sulfur cluster, ROS reactive oxygen species, CoA co-enzyme A, PANK pantothenate kinases, 4EBP1 eukaryotic translation initiation factor 4E binding protein 1.