Cited by 2,774Autophagy in Disease and TherapyParkinson's Disease Mechanisms and TreatmentsUbiquitin and proteasome pathways

The ubiquitin kinase PINK1 recruits autophagy receptors to induce mitophagy

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Lazarou, Michael, Sliter, Danielle A., Kane, Lesley A., Sarraf, Shireen A., Wang, Chunxin, Burman, Jonathon L., Sideris, Dionisia P., Fogel, Adam I. +1 more·2015·Nature

Abstract

Protein aggregates and damaged organelles are tagged with ubiquitin chains to trigger selective autophagy. To initiate mitophagy, the ubiquitin kinase PINK1 phosphorylates ubiquitin to activate the ubiquitin ligase parkin, which builds ubiquitin chains on mitochondrial outer membrane proteins, where they act to recruit autophagy receptors. Using genome editing to knockout five autophagy receptors in HeLa cells, here we show that two receptors previously linked to xenophagy, NDP52 and optineurin, are the primary receptors for PINK1- and parkin-mediated mitophagy. PINK1 recruits NDP52 and optineurin, but not p62, to mitochondria to activate mitophagy directly, independently of parkin. Once recruited to mitochondria, NDP52 and optineurin recruit the autophagy factors ULK1, DFCP1 and WIPI1 to focal spots proximal to mitochondria, revealing a function for these autophagy receptors upstream of LC3. This supports a new model in which PINK1-generated phospho-ubiquitin serves as the autophagy signal on mitochondria, and parkin then acts to amplify this signal. This work also suggests direct and broader roles for ubiquitin phosphorylation in other autophagy pathways.

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  • ATG9A has been linked to OPTN, which plays an important role as an adapter for PINK1-PRKN mitophagy.

    “has been linked to OPTN, which plays an important role as an adapter for PINK1-PRKN mitophagy [12, 34, 35].”

    From miRNA family miR-29 inhibits PINK1-PRKN signaling via ATG9A (2026) · cites this paper as [12]

    The 'Autophagy receptors in mitophagy' section (page not provided) shows that OPTN helps mediate Parkin-associated mitophagy, redundantly with NDP52. Our copy does not establish a link between ATG9A and OPTN; ATG9A appears only in the title of a work listed in the References. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Mitochondrial pS65-Ub chains serve as a specific signal for engulfment of mitochondria in autophagosomes.

    “These serve as a specific signal for the engulfment of mitochondria in autophagosomes [12].”

    From miRNA family miR-29 inhibits PINK1-PRKN signaling via ATG9A (2026) · cites this paper as [12]

  • pUbS65 accumulates with mitochondrial stress, age, and disease and serves as a specific signal for recognition by autophagy receptors.

    “Moreover, pUbS65 has been suggested to accumulate with mitochondrial stress, age, and disease [19] and to serve as a specific signal for recognition by autophagy receptors [20, 21].”
  • In vitro, silencing of TBK1 or ALS-related TBK1 variants reduces the recruitment of OPTN and LC3B to damaged mitochondria, thereby impairing mitophagy and resulting in the accumulation of defective mitochondria.

    “In vitro, silencing of TBK1 or ALS-related TBK1 variants reduces the recruitment of OPTN and LC3B to damaged mitochondria [212,213], thereby impairing mitophagy and resulting in the accumulation of defective mitochondria (Figure 1).”

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Authors
Lazarou, M., Sliter, D. A., Kane, L. A., Sarraf, S. A., Wang, C., Burman, J. L., Sideris, D. P., Fogel, A. I., & Youle, R. J.
Affiliations
National Institutes of Health (US)
Corresponding author
Youle, Richard J.
Venue
Nature
Published
2015-08
Volume
524
Issue
7565
Pages
309-314
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2103230459
Cited by
2,774
References
42
Citations by year
2026: 250 · 2025: 304 · 2024: 291 · 2023: 244 · 2022: 268 · 2021: 329 · 2020: 254 · 2019: 221 · 2018: 207 · 2017: 206 · 2016: 177 · 2015: 21
FWCI
160.06
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute
  • National Institute of Neurological Disorders and Stroke (Z01NS002859)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
PINK1, Parkin, mitophagy, selective autophagy, autophagy receptors, NDP52, optineurin, ubiquitin phosphorylation, ULK1, WIPI1, p62, LC3, mitochondrial quality control, autophagy initiation, xenophagy
MeSH terms
Autophagy-Related Proteins, Autophagy-Related Protein-1 Homolog, PTEN-Induced Putative Kinase, Autophagy, Carrier Proteins, HeLa Cells, Humans, Membrane Proteins, Microtubule-Associated Proteins, Mitochondria, Models, Biological, Nuclear Proteins, Phosphorylation, Protein Kinases, Signal Transduction, Protein Serine-Threonine Kinases, Cell Cycle Proteins, Mitochondrial Proteins, Ubiquitin, Membrane Transport Proteins, Transcription Factor TFIIIA, Ubiquitin-Protein Ligases, Intracellular Signaling Peptides and Proteins, Mitophagy

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