期刊
JOURNAL OF EXPERIMENTAL MEDICINE
卷 203, 期 5, 页码 1295-1305出版社
ROCKEFELLER UNIV PRESS
DOI: 10.1084/jem.20051556
关键词
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c-FLIP proteins (isoforms: c-FLIPL, c-FLIPS, and c-FLIPR) play an essential role in the regulation of death receptor - induced apoptosis. Here, we demonstrate that the cytoplasmic NH2-terminal procaspase-8 cleavage product of c-FLIP (p22-FLIP) found in nonapoptotic malignant cells, primary T and B cells, and mature dendritic cells (DCs) strongly induces nuclear factor kappa B (NF-kappa B) activity by interacting with the I kappa B kinase (IKK) complex via the IKK gamma subunit. Thus, in addition to inhibiting apoptosis by binding to the death-inducing signaling complex, our data demonstrate a novel mechanism by which c-FLIP controls NF-kappa B activation and life/death decisions in lymphocytes and DCs.
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