FLIP: A flop for execution signals

Resistance to apoptosis is one of the established hallmarks of cancer cells. This is a function of an imbalance between the proteins that facilitate death execution and those that inhibit apoptosis or promote cell proliferation. The anti-apoptotic protein, FLICE inhibitory protein (FLIP), first iden...

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Main Authors: Subramaniam, K., Hirpara, J., Tucker-Kellogg, L., Tucker-Kellogg, G., Pervaiz, Shazib
Format: Journal Article
Published: Elsevier 2013
Online Access:http://hdl.handle.net/20.500.11937/51040
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author Subramaniam, K.
Hirpara, J.
Tucker-Kellogg, L.
Tucker-Kellogg, G.
Pervaiz, Shazib
author_facet Subramaniam, K.
Hirpara, J.
Tucker-Kellogg, L.
Tucker-Kellogg, G.
Pervaiz, Shazib
author_sort Subramaniam, K.
building Curtin Institutional Repository
collection Online Access
description Resistance to apoptosis is one of the established hallmarks of cancer cells. This is a function of an imbalance between the proteins that facilitate death execution and those that inhibit apoptosis or promote cell proliferation. The anti-apoptotic protein, FLICE inhibitory protein (FLIP), first identified as a viral protein, is over-expressed in a variety of human pathologies. Initial observations linked FLIP expression to inhibition of death receptor induced apoptosis, due to its structural homology to the cysteine protease, caspase-8. FLIP impedes full processing of pro-caspase-8 to its active form and its release to the cytosol, and by doing so blocks apoptotic signaling downstream of the membrane death initiating signaling complex (DISC). Recent observations have highlighted the complex regulation of this protein and its cross talk with diverse signaling networks and metabolic processes. As FLIP expression is directly associated with chemotherapy resistance, a better understanding of its genomic organization, gene transcription, as well as post-transcriptional regulation could yield novel targets with potential therapeutic implications against drug refractory cancers. In this short review, we provide a brief overview of the structural and functional biology of this somewhat complex protein with direct relevance to carcinogenesis. © 2012 Elsevier Ireland Ltd.
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spelling curtin-20.500.11937-510402017-09-13T15:34:25Z FLIP: A flop for execution signals Subramaniam, K. Hirpara, J. Tucker-Kellogg, L. Tucker-Kellogg, G. Pervaiz, Shazib Resistance to apoptosis is one of the established hallmarks of cancer cells. This is a function of an imbalance between the proteins that facilitate death execution and those that inhibit apoptosis or promote cell proliferation. The anti-apoptotic protein, FLICE inhibitory protein (FLIP), first identified as a viral protein, is over-expressed in a variety of human pathologies. Initial observations linked FLIP expression to inhibition of death receptor induced apoptosis, due to its structural homology to the cysteine protease, caspase-8. FLIP impedes full processing of pro-caspase-8 to its active form and its release to the cytosol, and by doing so blocks apoptotic signaling downstream of the membrane death initiating signaling complex (DISC). Recent observations have highlighted the complex regulation of this protein and its cross talk with diverse signaling networks and metabolic processes. As FLIP expression is directly associated with chemotherapy resistance, a better understanding of its genomic organization, gene transcription, as well as post-transcriptional regulation could yield novel targets with potential therapeutic implications against drug refractory cancers. In this short review, we provide a brief overview of the structural and functional biology of this somewhat complex protein with direct relevance to carcinogenesis. © 2012 Elsevier Ireland Ltd. 2013 Journal Article http://hdl.handle.net/20.500.11937/51040 10.1016/j.canlet.2012.07.005 Elsevier restricted
spellingShingle Subramaniam, K.
Hirpara, J.
Tucker-Kellogg, L.
Tucker-Kellogg, G.
Pervaiz, Shazib
FLIP: A flop for execution signals
title FLIP: A flop for execution signals
title_full FLIP: A flop for execution signals
title_fullStr FLIP: A flop for execution signals
title_full_unstemmed FLIP: A flop for execution signals
title_short FLIP: A flop for execution signals
title_sort flip: a flop for execution signals
url http://hdl.handle.net/20.500.11937/51040