Ferrostatin-1 (347174-05-4), liproxstatin-1 (950455-15-9), trolox (53188-07-1), deferoxamine (138-14-7), RSL-3 (1219810-16-8), erastin (571203-78-6), sulfasalazine (599-79-1), atorvastatin (599-79-1), KU60019 (925701-46-8) were purchased from Cayman. The concentration used is shown in Supplementary Table. S1. C11BODIPY (D3861) was purchased from Invitrogen. Mouse recombinant IFNγ (485-MI-100), anti-mouse IFNγ block antibody (MAB485), human recombinant IFNγ (285-IF-100) were purchased from R&D. Anti-mouse IFNGR1 antibody (16-1193-85) was purchased from Thermo Fisher. The following antibody were used for immunoblots: anti-human SLC7A11 antibody (12691), anti-β-actin (12262), anti-GAPDH (2118), anti-STAT1 (9172), anti-phospho-STAT1 (9167), anti-ATM (2873) and anti-ACSL4 (4047) were bought from Cell Signaling Technology. Anti-GPX4 (ab41787) was from Abcam. Additionally, IgG (BE0087, BE0090), anti-mouse CTLA4 (BE0131), anti-mouse PD-L1 (BE0101) and anti-mouse CD8 (BE0117) were purchased from BioXcell. 4-HNE antibody (ab46545) was purchased from Abcam. Cyst(e)inase was generated as previously described (18 (link)).