Etoposide, 4-hydroxytamoxifen, puromycin, and polybrene were purchased from Sigma. Hygromycin was from Gemini Bio Products, and luciferin was from PerkinElmer. Recombinant human IL1α protein (used at 20 ng/ml) was from R&D Systems, and p38 MAPK inhibitor from Selleck Chemicals.
The following antibodies were described previously: Flag, p16, Lamin B1, GAPDH, and GFP5 (link). Other antibodies used include: γH2AX (Abcam #ab2893 and Cell Signaling Technology #9718), STING (Cell Signaling Technology #13647 and LSBio #LS-B7237), cGAS (Cell Signaling Technology #15102 and Santa Cruz Biotechnology #sc-245858), human IL1α (Abcam #ab9614), IL8 (Abcam #ab18672), p-ATM S1981 (Abcam #ab81292), p-p53 S15 (Cell Signaling Technology #9284), p-p65 S536 (Cell Signaling Technology #3033), p65 (Cell Signaling Technology 8242), NRas (Santa Cruz Biotechnology #sc-31), CD3 (Abcam #ab16669), Mac2 (BioLegend #125401), mouse IL1α (R&D Systems #AF-400), p21 (#sc-471), and H3 (Active Motif #39763).