Cited by 230Autophagy in Disease and TherapyCell death mechanisms and regulationUbiquitin and proteasome pathways

Autophagy variation within a cell population determines cell fate through selective degradation of Fap-1

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Gump, Jacob M., Staskiewicz, Leah, Morgan, Michael J., Bamberg, Alison, Riches, David W. H., Thorburn, Andrew·2014·Nature Cell Biology

Abstract

Autophagy regulates cell death both positively and negatively, but the molecular basis for this paradox remains inadequately characterized. We demonstrate here that transient cell-to-cell variations in autophagy can promote either cell death or survival depending on the stimulus and cell type. By separating cells with high and low basal autophagy using flow cytometry, we demonstrate that autophagy determines which cells live or die in response to death receptor activation. We have determined that selective autophagic degradation of the phosphatase Fap-1 promotes Fas apoptosis in Type I cells, which do not require mitochondrial permeabilization for efficient apoptosis. Conversely, autophagy inhibits apoptosis in Type II cells (which require mitochondrial involvement) or on treatment with TRAIL in either Type I or II cells. These data illustrate that differences in autophagy in a cell population determine cell fate in a stimulus- and cell-type-specific manner. This example of selective autophagy of an apoptosis regulator may represent a general mechanism for context-specific regulation of cell fate by autophagy.

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Authors
Gump, J. M., Staskiewicz, L., Morgan, M. J., Bamberg, A., Riches, D. W. H., & Thorburn, A.
Affiliations
  • University of Colorado Anschutz (US)
  • National Jewish Health (US)
Corresponding author
Thorburn, Andrew
Venue
Nature Cell Biology
Published
2013-12-08
Volume
16
Issue
1
Pages
47-54
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2081826742
Cited by
230
References
52
Citations by year
2026: 8 · 2025: 13 · 2024: 15 · 2023: 8 · 2022: 34 · 2021: 14 · 2020: 16 · 2019: 17 · 2018: 15 · 2017: 28 · 2016: 22 · 2015: 18 · 2014: 20 · 2013: 1
FWCI
14.84
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Cancer Center, University of Colorado
  • Anschutz Medical Campus, University of Colorado
  • National Heart, Lung, and Blood Institute (R01HL114754, R01HL068628, HL-68628)
  • National Cancer Institute (CA 150925, 5T32CA82086-10, T32CA082086, P30 CA46934, R01CA150925, R01CA111421, P30CA046934)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
autophagy, FAP-1, selective autophagy, cell fate, apoptosis, Fas, death receptor signaling, TRAIL, mitochondrial membrane permeabilization, cellular heterogeneity
MeSH terms
Sequestosome-1 Protein, Autophagy, Cell Survival, Chloroquine, Culture Media, HeLa Cells, Humans, Models, Biological, Protein Binding, Recombinant Fusion Proteins, Apoptosis, fas Receptor, Cell Lineage, Jurkat Cells, Adaptor Proteins, Signal Transducing, Cell Proliferation, Green Fluorescent Proteins, Fas Ligand Protein, Protein Tyrosine Phosphatase, Non-Receptor Type 13, Proteolysis

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