Fig. 7

EBV-LMP1 regulates T/S/Z-induced necroptosis. EBV-LMP1 (−) cells stimulated with T/S/Z undergo necroptosis through RIPK1–RIPK3 signaling. However, EBV-LMP1 (+) cells can survive under this stimulation. On the one hand, LMP1 interacts directly with both RIPK1 and RIPK3 through its C-terminal activation region. On the one hand, LMP1 promotes K63-linked polyubiquitination of RIPK1 and suppresses the protein expression while inhibiting K63-linked polyubiquitination of RIPK3. These effects contribute to the activation of NF-κB and disruption of necrosome formation, collectively switching cell fate from death to survival