The Impact of Autophagy on Cell Death Modalities

Autophagy represents a homeostatic cellular mechanism for the turnover of organelles and proteins, through a lysosome-dependent degradation pathway. During starvation, autophagy facilitates cell survival through the recycling of metabolic precursors. Additionally, autophagy can modulate other vital...

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Main Authors: Stefan W. Ryter, Kenji Mizumura, Augustine M. K. Choi
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:International Journal of Cell Biology
Online Access:http://dx.doi.org/10.1155/2014/502676
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author Stefan W. Ryter
Kenji Mizumura
Augustine M. K. Choi
author_facet Stefan W. Ryter
Kenji Mizumura
Augustine M. K. Choi
author_sort Stefan W. Ryter
collection DOAJ
description Autophagy represents a homeostatic cellular mechanism for the turnover of organelles and proteins, through a lysosome-dependent degradation pathway. During starvation, autophagy facilitates cell survival through the recycling of metabolic precursors. Additionally, autophagy can modulate other vital processes such as programmed cell death (e.g., apoptosis), inflammation, and adaptive immune mechanisms and thereby influence disease pathogenesis. Selective pathways can target distinct cargoes (e.g., mitochondria and proteins) for autophagic degradation. At present, the causal relationship between autophagy and various forms of regulated or nonregulated cell death remains unclear. Autophagy can occur in association with necrosis-like cell death triggered by caspase inhibition. Autophagy and apoptosis have been shown to be coincident or antagonistic, depending on experimental context, and share cross-talk between signal transduction elements. Autophagy may modulate the outcome of other regulated forms of cell death such as necroptosis. Recent advances suggest that autophagy can dampen inflammatory responses, including inflammasome-dependent caspase-1 activation and maturation of proinflammatory cytokines. Autophagy may also act as regulator of caspase-1 dependent cell death (pyroptosis). Strategies aimed at modulating autophagy may lead to therapeutic interventions for diseases in which apoptosis or other forms of regulated cell death may play a cardinal role.
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spelling doaj-art-5bca913972a744e29a65adc7571041e32025-02-03T01:03:45ZengWileyInternational Journal of Cell Biology1687-88761687-88842014-01-01201410.1155/2014/502676502676The Impact of Autophagy on Cell Death ModalitiesStefan W. Ryter0Kenji Mizumura1Augustine M. K. Choi2Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USAPulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USAWeil Cornell Medical College, 525 East 68th Street, Room M-522, Box 130, New York, NY 10065, USAAutophagy represents a homeostatic cellular mechanism for the turnover of organelles and proteins, through a lysosome-dependent degradation pathway. During starvation, autophagy facilitates cell survival through the recycling of metabolic precursors. Additionally, autophagy can modulate other vital processes such as programmed cell death (e.g., apoptosis), inflammation, and adaptive immune mechanisms and thereby influence disease pathogenesis. Selective pathways can target distinct cargoes (e.g., mitochondria and proteins) for autophagic degradation. At present, the causal relationship between autophagy and various forms of regulated or nonregulated cell death remains unclear. Autophagy can occur in association with necrosis-like cell death triggered by caspase inhibition. Autophagy and apoptosis have been shown to be coincident or antagonistic, depending on experimental context, and share cross-talk between signal transduction elements. Autophagy may modulate the outcome of other regulated forms of cell death such as necroptosis. Recent advances suggest that autophagy can dampen inflammatory responses, including inflammasome-dependent caspase-1 activation and maturation of proinflammatory cytokines. Autophagy may also act as regulator of caspase-1 dependent cell death (pyroptosis). Strategies aimed at modulating autophagy may lead to therapeutic interventions for diseases in which apoptosis or other forms of regulated cell death may play a cardinal role.http://dx.doi.org/10.1155/2014/502676
spellingShingle Stefan W. Ryter
Kenji Mizumura
Augustine M. K. Choi
The Impact of Autophagy on Cell Death Modalities
International Journal of Cell Biology
title The Impact of Autophagy on Cell Death Modalities
title_full The Impact of Autophagy on Cell Death Modalities
title_fullStr The Impact of Autophagy on Cell Death Modalities
title_full_unstemmed The Impact of Autophagy on Cell Death Modalities
title_short The Impact of Autophagy on Cell Death Modalities
title_sort impact of autophagy on cell death modalities
url http://dx.doi.org/10.1155/2014/502676
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