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Alpha II-spectrin is one of the major proteins responsible for maintaining the cytoskeletal integrity of the cell. The caspase 3-mediated cleavage of alpha II-spectrin during apoptotic cell death may play an important role in altering membrane stability and the formation of apoptotic bodies. In this study, we identified the primary caspase 3 cleavage site in alpha II-spectrin. We found that the transcriptional...
Functional screening of a human bone marrow cDNA library for suppressors of CD95-mediated apoptosis has led to the identification of a 326 bp fragment (Je2), which not only suppresses CD95-induced apoptosis in Jurkat T-cells, but maps to 3p21.3, to an intronic region of the candidate TSG LUCA-15 locus. Here we report that overexpression of Je2 in CEM-C7 T-cell line is able to suppress CD95-mediated...
Tumour Necrosis Factor α binding at the cell surface induces a complex series of signaling events culminating in the caspase cascade, which is central to apoptosis. However, recent work from several laboratories has questioned caspase involvement in commitment to cell death. We have therefore investigated the involvement of caspases in the crucial commitment stage of tumour necrosis factor-induced...
Caspase-8 (FLICE) can associate with and be activated by CD95 (APO-1/Fas), an apoptosis-inducing member of the Tumour Necrosis Factor receptor family. We find that, in Jurkat T cells, the DNA damaging anti-cancer drug etoposide induces apoptosis and, surprisingly, processing of caspase-8. Therefore, we have investigated whether etoposide involves CD95 receptor activation. We find that etoposide does...
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