Smac mimetics and type II interferon synergistically induce necroptosis in various cancer cell lines

Since cancer cells often evade apoptosis, induction of necroptosis as another mode of programmed cell death is considered as a promising therapeutic alternative. Here, we identify a novel synergistic interaction of Smac mimetics that antagonize x-linked Inhibitor of Apoptosis (XIAP), cellular Inhibitor of Apoptosis (cIAP) 1 and 2 with interferon (IFN)γ to induce necroptosis in apoptosis-resistant cancer cells in which caspase activation is blocked. The synergistic is confirmed by calculation of combination indices (CIs) and found in both solid and hematological cancer cell lines as well as for different Smac mimetics (i.e.

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