Dihxy cells, developed from DEN-injected C57BL/6 mice, were generously provided by Dr. Michael Karin’s laboratory and cultured as previously described (6 (link)). The cells were mycoplasma free as detected by Mycoplasma Detection Kit (ThermoFisher) and were not used for more than 10 passages. These cells were transfected with a plasmid expressing either control, scrambled sgRNA or AEG-1 sgRNA, Cas9, puromycin-resistance marker and mCherry (obtained from GeneCopoeia). Single clones from FACS-sorted mCherry positive cells were isolated, expanded and validated for AEG-1 knockout.