scholarly journals Alix and ALG-2 Are Involved in Tumor Necrosis Factor Receptor 1-induced Cell Death

2008 ◽  
Vol 283 (50) ◽  
pp. 34954-34965 ◽  
Author(s):  
Anne-Laure Mahul-Mellier ◽  
Flavie Strappazzon ◽  
Anne Petiot ◽  
Christine Chatellard-Causse ◽  
Sakina Torch ◽  
...  
1996 ◽  
Vol 183 (2) ◽  
pp. 669-674 ◽  
Author(s):  
S Y Lee ◽  
C G Park ◽  
Y Choi

CD30 is a member of the tumor necrosis factor superfamily and a surface marker for Hodgkin's disease. Normal activated T cells and several virally transformed T or B cell lines also show CD30 expression. The interaction of CD30 with its ligand induces cell death or proliferation, depending on the cell type. In this report we characterize the signals mediated by the intracellular domain of CD30 and show that, in combination with signal(s) transduced by the T cell receptor, the multimerization of CD30 cytoplasmic domain induces Fas(CD95)-independent cell death in T cell hybridomas. Deletion analysis shows that the COOH-terminal 66 amino acids of CD30 are required to induce cell death. Using the yeast two-hybrid system, we have identified that the same region of CD30 interacts with tumor necrosis factor receptor-associated factor (TRAF)1 and TRAF2. These results indicate that TRAF1 and/or TRAF2 play an important role in cell death in addition to their previously identified roles in cell proliferation.


IBRO Reports ◽  
2020 ◽  
Vol 9 ◽  
pp. 218-223
Author(s):  
Lidia M. Yshii ◽  
Adriana O. Manfiolli ◽  
Alexandre Denadai-Souza ◽  
Paula F. Kinoshita ◽  
Marcelo D. Gomes ◽  
...  

2004 ◽  
Vol 24 (15) ◽  
pp. 6763-6772 ◽  
Author(s):  
Punya Shrivastava ◽  
Cristen Pantano ◽  
Richard Watkin ◽  
Brian McElhinney ◽  
Amy Guala ◽  
...  

ABSTRACT Nitrogen dioxide is a highly toxic reactive nitrogen species (RNS) recently discovered as an inflammatory oxidant with great potential to damage tissues. We demonstrate here that cell death by RNS was caused by c-Jun N-terminal kinase (JNK). Activation of JNK by RNS was density dependent and caused mitochondrial depolarization and nuclear condensation. JNK activation by RNS was abolished in cells lacking functional Fas or following expression of a truncated version of Fas lacking the intracellular death domain. In contrast, RNS induced JNK potently in cells expressing a truncated version of tumor necrosis factor receptor 1 or cells lacking tumor necrosis factor receptor 1 (TNF-R1), illustrating a dependence of Fas but not TNF-R1 in RNS-induced signaling to JNK. Furthermore, Fas was oxidized, redistributed, and colocalized with Fas-associated death domain (FADD) in RNS-exposed cells, illustrating that RNS directly targeted Fas. JNK activation and cell death by RNS occurred in a Fas ligand- and caspase-independent manner. While the activation of JNK by RNS or FasL required FADD, the cysteine-rich domain 1 containing preligand assembly domain required for FasL signaling was not involved in JNK activation by RNS. These findings illustrate that RNS cause cell death in a Fas- and JNK-dependent manner and that this occurs through a pathway distinct from FasL. Thus, avenues aimed at preventing the interaction of RNS with Fas may attenuate tissue damage characteristic of chronic inflammatory diseases that are accompanied by high levels of RNS.


1994 ◽  
Vol 180 (2) ◽  
pp. 557-567 ◽  
Author(s):  
M V Clement ◽  
I Stamenkovic

Fas antigen and two tumor necrosis factor receptors (TNFR), p55 and p75, are implicated in the triggering of cell death upon stimulation by natural ligands and specific monoclonal antibodies. However, the relative efficiency of each receptor, the mechanisms that regulate their function and the signaling pathways they employ, remain to be elucidated. In this study, fusion proteins, composed of the extracellular domain of CD40 and the intracellular and transmembrane domains of Fas, TNFRp55 and TNFRp75, were stably expressed in a human melanoma cell line that is deficient in Fas and TNFR expression. Transfectants were stimulated by a soluble recombinant form of the CD40 ligand gp39, and the effect on cell viability determined. Engagement of all three fusion proteins by the gp39 ligand induced lethal signals, but the rate at which cell death occurred was distinct. Fas-derived signals were observed to have the most rapid effect, killing most cells within hours of stimulation, whereas TNFRp55- and TNFRp75-associated signals resulted in cell death within 2-3 d after engagement by ligand. It is interesting to note that optimal cell killing by all three fusion proteins was dependent on a critical, low to intermediate, cell surface expression level. High levels of fusion protein expression, on the other hand, were associated with inhibition of cell death. Our results provide a model to study Fas and TNFR-mediated cell death and suggest a novel mechanism for the regulation of death signals triggered by members of the TNFR family.


2002 ◽  
Vol 277 (36) ◽  
pp. 33213-33219 ◽  
Author(s):  
Oskar W. Rokhlin ◽  
Rebecca A. Glover ◽  
Agshin F. Taghiyev ◽  
Natalya V. Guseva ◽  
Richard E. B. Seftor ◽  
...  

2015 ◽  
Vol 291 (4) ◽  
pp. 1841-1853 ◽  
Author(s):  
Hyunjin Kim ◽  
Jinsung Yang ◽  
Min Ju Kim ◽  
Sekyu Choi ◽  
Ju-Ryung Chung ◽  
...  

TRAP1 (tumor necrosis factor receptor-associated protein 1), a mitochondrial Hsp90 family chaperone, has been identified as a critical regulator of cell survival and bioenergetics in tumor cells. To discover novel signaling networks regulated by TRAP1, we generated Drosophila TRAP1 mutants. The mutants successfully developed into adults and produced fertile progeny, showing that TRAP1 is dispensable in development and reproduction. Surprisingly, mutation or knockdown of TRAP1 markedly enhanced Drosophila survival under oxidative stress. Moreover, TRAP1 mutation ameliorated mitochondrial dysfunction and dopaminergic (DA) neuron loss induced by deletion of a familial Parkinson disease gene PINK1 (Pten-induced kinase 1) in Drosophila. Gamitrinib-triphenylphosphonium, a mitochondria-targeted Hsp90 inhibitor that increases cell death in HeLa and MCF7 cells, consistently inhibited cell death induced by oxidative stress and mitochondrial dysfunction induced by PINK1 mutation in mouse embryonic fibroblast cells and DA cell models such as SH-SY5Y and SN4741 cells. Additionally, gamitrinib-triphenylphosphonium also suppressed the defective locomotive activity and DA neuron loss in Drosophila PINK1 null mutants. In further genetic analyses, we showed enhanced expression of Thor, a downstream target gene of transcription factor FOXO, in TRAP1 mutants. Furthermore, deletion of FOXO almost nullified the protective roles of TRAP1 mutation against oxidative stress and PINK1 mutation. These results strongly suggest that inhibition of the mitochondrial chaperone TRAP1 generates a retrograde cell protective signal from mitochondria to the nucleus in a FOXO-dependent manner.


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