Cited by 82Autophagy in Disease and TherapyGenetics, Aging, and Longevity in Model OrganismsCellular transport and secretion

Expression of WIPI2B counteracts age-related decline in autophagosome biogenesis in neurons

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Stavoe, Andrea KH, Gopal, Pallavi P, Gubas, Andrea, Tooze, Sharon A, Holzbaur, Erika LF·2019·eLife

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Abstract

Autophagy defects are implicated in multiple late-onset neurodegenerative diseases including Amyotrophic Lateral Sclerosis (ALS) and Alzheimer’s, Huntington’s, and Parkinson’s diseases. Since aging is the most common shared risk factor in neurodegeneration, we assessed rates of autophagy in mammalian neurons during aging. We identified a significant decrease in the rate of constitutive autophagosome biogenesis during aging and observed pronounced morphological defects in autophagosomes in neurons from aged mice. While early stages of autophagosome formation were unaffected, we detected the frequent production of stalled LC3B-negative isolation membranes in neurons from aged mice. These stalled structures recruited the majority of the autophagy machinery, but failed to develop into LC3B-positive autophagosomes. Importantly, ectopically expressing WIPI2B effectively restored autophagosome biogenesis in aged neurons. This rescue is dependent on the phosphorylation state of WIPI2B at the isolation membrane, suggesting a novel therapeutic target in age-associated neurodegeneration.

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  • With increasing age, basal autophagy and the capacity for efficient autophagosome maturation progressively deteriorate in neurons, leading to accumulation of malformed and immature autophagic vesicles, implying reduced proteostatic reserve over time.

    “With increasing age, basal autophagy and the capacity for efficient autophagosome maturation progressively deteriorate in neurons, leading to accumulation of malformed and immature autophagic vesicles, implying reduced proteostatic reserve over time [382].”

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Authors
Stavoe, A. K., Gopal, P. P., Gubas, A., Tooze, S. A., & Holzbaur, E. L.
Affiliations
  • University of Pennsylvania (US)
  • Molecular Cell Biology of Autophagy Laboratory, The Francis Crick Institute, London, United Kingdom
  • The Francis Crick Institute (GB)
Corresponding author
Holzbaur, Erika LF
Venue
eLife
Published
2019-07-16
Volume
8
ISSN
2050-084X (ISSN-L)
OpenAlex
W2958740406
Cited by
82
References
127
Citations by year
2026: 9 · 2025: 13 · 2024: 8 · 2023: 10 · 2022: 14 · 2021: 12 · 2020: 10 · 2019: 6
FWCI
7.99
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • The Francis Crick Institute (cc-by)
Funders
  • National Institutes of Health (R37 NS060698, F32 NS100348-01, K99 NS109286-01)
  • Cancer Research UK (FC001187)
  • Medical Research Council (FC001187)
  • Wellcome Trust (FC001187)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
autophagosome formation, aging, neurons, autophagy, isolation membrane, LC3B, autophagy defects, age-related neurodegeneration, neurodegenerative diseases, protein phosphorylation, therapeutic target
MeSH terms
Autophagosomes, Autophagy-Related Proteins, Aging, Animals, Autophagy, Neurons, Gene Expression, Phosphate-Binding Proteins, Mice

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