BID-mediated release of mitochondrial SMAC dampens XIAP-mediated immunity against Shigella
نویسندگان
چکیده
Maria Andree, Jens M. Seeger, Stephan Schüll, Oliver Coutelle, Diana Wagner-Stippich, Katja Wiegmann, Claudia Wunderlich, Kerstin Brinkmann, Pia Broxtermann, Axel Witt, Melanie Fritsch, Paola Martinelli, Harald Bielig, Tobias Lamkemeyer, Elena I. Rugarli, Thomas Kaufmann, Anja Sterner-Kock, F. Thomas Wunderlich, Andreas Villunger, L. Miguel Martins, Martin Krönke, Thomas A. Kufer, Olaf Utermöhlen and Hamid Kashkar
منابع مشابه
BID-dependent release of mitochondrial SMAC dampens XIAP-mediated immunity against Shigella.
The X-linked inhibitor of apoptosis protein (XIAP) is a potent caspase inhibitor, best known for its anti-apoptotic function in cancer. During apoptosis, XIAP is antagonized by SMAC, which is released from the mitochondria upon caspase-mediated activation of BID. Recent studies suggest that XIAP is involved in immune signaling. Here, we explore XIAP as an important mediator of an immune respons...
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The immunosurveillance of Hodgkin lymphoma (HL) by cytotoxic T lymphocytes (CTLs) is insufficient, and the clinical experience with adoptive transfer of CTLs is limited. We have previously reported that defects in mitochondrial apoptotic pathways and elevated XIAP expression confer resistance to different apoptotic stimuli in HL cells. Here, we aimed to develop molecular strategies to overcome ...
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The inhibitor of apoptosis proteins (IAP) are endogenous caspase inhibitors in the metazoan and characterized by the presence of baculoviral IAP repeats (BIR). X-linked IAP (XIAP) contains three BIR domains and directly inhibits effector caspases such as caspase-7 via a linker_BIR2 fragment and initiator caspases such as caspase-9 via the BIR3 domain. A mitochondrial protein Smac/DIABLO, which ...
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The extent to which the BH3-only protein Bid is important for intrinsic (mitochondria-mediated) apoptotic cell death induced by genotoxic stress remains controversial. In the present study, we examine this issue using a panel of gene-manipulated Bax-deficient Jurkat T-lymphocytes. Cells stably depleted of Bid were far less sensitive than control-transfected cells to etoposide-induced apoptosis....
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X‑linked inhibitor of apoptosis protein (XIAP) negatively regulates apoptotic pathways at a post‑mitochondrial level. XIAP functions by directly binding and inhibiting activation of specific caspases. Upon apoptotic stimuli, mitochondrial second mitochondria‑derived activator of caspases (Smac)/direct IAP‑binding protein with low PI (Diablo) is released into the cytosol, which results in displa...
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تاریخ انتشار 2014