Poly-ubiquitination in TNFR1-mediated necroptosis #MMPMID27066894
Dondelinger Y; Darding M; Bertrand MJM; Walczak H
Cell Mol Life Sci 2016[]; 73 (ä): 2165-76 PMID27066894show ga
Tumor necrosis factor (TNF) is a master pro-inflammatory cytokine, and inappropriate TNF signaling is implicated in the pathology of many inflammatory diseases. Ligation of TNF to its receptor TNFR1 induces the transient formation of a primary membrane-bound signaling complex, known as complex I, that drives expression of pro-survival genes. Defective complex I activation results in induction of cell death, in the form of apoptosis or necroptosis. This switch occurs via internalization of complex I components and assembly and activation of secondary cytoplasmic death complexes, respectively known as complex II and necrosome. In this review, we discuss the crucial regulatory functions of ubiquitination?a post-translational protein modification consisting of the covalent attachment of ubiquitin, and multiples thereof, to target proteins?to the various steps of TNFR1 signaling leading to necroptosis.