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GAITHER, Alex; PORTER, Dale; RAMSEY, Tim; IOURGENKO, Vadim; HUANG, Alan; YAN CHEN; SCHLEGEL, Robert; LABOW, Mark; FAWELL, Stephen; SELLERS, William R; ZAWEL, Leigh; YAO YAO; BORAWSKI, Jason; GUANG YANG; DONOVAN, Jerry; SAGE, David; SLISZ, Joanna; TRAN, Mary; STRAUB, Christopher
Cancer research (Chicago, Ill.), 12/2007, Letnik: 67, Številka: 24Journal Article
Smac mimetic compounds targeting the inhibitor of apoptosis proteins (IAP) baculoviral IAP repeat-3 domain are presumed to reduce the threshold for apoptotic cell death by alleviating caspase-9 repression. We explored this tenet in an unbiased manner by searching for small interfering RNAs that are able to confer resistance to the Smac mimetic compound LBW242. Among the screening hits were multiple components of the tumor necrosis factor alpha (TNFalpha) signaling pathway as well as X-linked inhibitor of apoptosis (XIAP) itself. Here, we show that in a subset of highly sensitive tumor cell lines, activity of LBW242 is dependent on TNFalpha signaling. Mechanistic studies indicate that in this context, XIAP is a positive modulator of TNFalpha induction whereas cellular inhibitor of apoptosis protein 1 negatively regulates TNFalpha-mediated apoptosis.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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