Cited by 129Genetics, Aging, and Longevity in Model OrganismsAutophagy in Disease and TherapyUbiquitin and proteasome pathways

Upregulation of the Autophagy Adaptor p62/SQSTM1 Prolongs Health and Lifespan in Middle-Aged Drosophila

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Aparicio, Ricardo, Rana, Anil, Walker, David W.·2019·Cell Reports

Abstract

Autophagy, a lysosomal degradation pathway, plays crucial roles in health and disease. p62/SQSTM1 (hereafter p62) is an autophagy adaptor protein that can shuttle ubiquitinated cargo for autophagic degradation. Here, we show that upregulating the Drosophila p62 homolog ref(2)P/dp62, starting in midlife, delays the onset of pathology and prolongs healthy lifespan. Midlife induction of dp62 improves proteostasis, in aged flies, in an autophagy-dependent manner. Previous studies have reported that p62 plays a role in mediating the clearance of dysfunctional mitochondria via mitophagy. However, the causal relationships between p62 expression, mitochondrial homeostasis, and aging remain largely unexplored. We show that upregulating dp62, in midlife, promotes mitochondrial fission, facilitates mitophagy, and improves mitochondrial function in aged flies. Finally, we show that mitochondrial fission is required for the anti-aging effects of midlife dp62 induction. Our findings indicate that p62 represents a potential therapeutic target to counteract aging and prolong health in aged mammals.

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Authors
Aparicio, R., Rana, A., & Walker, D. W.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Walker, David W.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2019-07
Volume
28
Issue
4
Pages
1029-1040.e5
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2963984502
Cited by
129
References
55
Citations by year
2026: 5 · 2025: 19 · 2024: 17 · 2023: 20 · 2022: 23 · 2021: 21 · 2020: 19 · 2019: 2 · 2018: 1
FWCI
5.91
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-nd)
Funders
  • National Institute on Aging
  • American Federation for Aging Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
p62, autophagy, aging, lifespan extension, healthspan, mitochondrial fission, mitophagy, mitochondrial homeostasis, proteostasis, Drosophila melanogaster
MeSH terms
Proteostasis, Animals, Autophagy, DNA-Binding Proteins, Drosophila melanogaster, Health, Longevity, Male, Mitochondria, Up-Regulation, Drosophila Proteins, Transcription Factor TFIID, TATA-Binding Protein Associated Factors, Mitophagy

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