Necroptosis is a type of programmed cell death that is morphologically similar to necrosis. This type of cell death is involved in various pathophysiological disorders, including inflammatory, neurodegenerative, infectious, and malignant diseases. Receptor-interacting protein kinase 1 (RIPK1), RIPK3, and mixed lineage kinase domain-like protein (MLKL) pseudokinase constitute the core components of the necroptosis signaling pathway and are considered the most promising targets for therapeutic intervention. The discovery and characterization of necroptosis inhibitors not only accelerate our understanding of the necroptosis signaling pathway but also provide important drug candidates for the treatment of necroptosis-related diseases. Here, we will review recent research progress on necroptosis inhibitors, mechanisms of action and their potential applications for disease treatment.
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FEBS J
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TNFAIP3-interacting protein 1 (TNIP1; also known as ABIN-1) is a ubiquitin-binding protein that suppresses death-receptor- or Toll-like receptor-mediated apoptosis and necroptosis; however, it remains unclear whether ABIN-1 is capable of regulating pyroptosis. In the present study, we found that, in mouse embryonic fibroblasts and macrophages, ABIN-1 deficiency sensitized cells to poly(I:C) + TAK1 inhibitor 5Z-7-oxozeaenol-induced pyroptosis besides apoptosis and necroptosis. The sensitizing effect of ABIN-1 deficiency on pyroptosis depended on caspase-8 and its adaptor molecule FAS-associated death domain protein.
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