Cited by 190Mitochondrial Function and PathologyParkinson's Disease Mechanisms and TreatmentsAutophagy in Disease and Therapy

Pink1 regulates the oxidative phosphorylation machinery via mitochondrial fission

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Liu, Wencheng, Acín-Peréz, Rebeca, Geghman, Kindiya D., Manfredi, Giovanni, Lu, Bingwei, Li, Chenjian·2011·Proceedings of the National Academy of Sciences

Abstract

Mutations in PTEN-induced kinase 1 (PINK1), a mitochondrial Ser/Thr kinase, cause an autosomal recessive form of Parkinson's disease (PD), PARK6. To investigate the mechanism of PINK1 pathogenesis, we used the Drosophila Pink1 knockout (KO) model. In mitochondria isolated from Pink1-KO flies, mitochondrial respiration driven by the electron transport chain (ETC) is significantly reduced. This reduction is the result of a decrease in ETC complex I and IV enzymatic activity. As a consequence, Pink1-KO flies also display a reduced mitochondrial ATP synthesis. Because mitochondrial dynamics is important for mitochondrial function and Pink1-KO flies have defects in mitochondrial fission, we explored whether fission machinery deficits underlie the bioenergetic defect in Pink1-KO flies. We found that the bioenergetic defects in the Pink1-KO can be ameliorated by expression of Drp1, a key molecule in mitochondrial fission. Further investigation of the ETC complex integrity in wild type, Pink1-KO, PInk1-KO/Drp1 transgenic, or Drp1 transgenic flies indicates that the reduced ETC complex activity is likely derived from a defect in the ETC complex assembly, which can be partially rescued by increasing mitochondrial fission. Taken together, these results suggest a unique pathogenic mechanism of PINK1 PD: The loss of PINK1 impairs mitochondrial fission, which causes defective assembly of the ETC complexes, leading to abnormal bioenergetics.

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  • Reduced mitophagy via Pink1/Parkin-regulated ubiquitination in aged neurons contributes to greater ROS accumulation.

    “Reduced mitophagy associated Pink1- and Parkin-regulated ubiquitination of the outer mitochondrial membrane of damaged mitochondria in aged neurons (79, 99, 140) contribute to a greater accumulation of ROS (81).”

    From Mitochondria initiate and regulate sarcopenia (2017) · cites this paper as [79]

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Authors
Liu, W., Acín-Peréz, R., Geghman, K. D., Manfredi, G., Lu, B., & Li, C.
Affiliations
  • Cornell University (US)
  • Department of Neurology and Neuroscience, Weill Medical College of Cornell University, New York, NY 10065; and
  • Stanford Medicine (US)
Venue
Proceedings of the National Academy of Sciences
Published
2011-07-18
Volume
108
Issue
31
Pages
12920-12924
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2026648000
Cited by
190
References
47
Citations by year
2026: 3 · 2025: 4 · 2024: 7 · 2023: 11 · 2022: 14 · 2021: 14 · 2020: 27 · 2019: 9 · 2018: 11 · 2017: 10 · 2016: 13 · 2015: 13 · 2014: 13 · 2013: 21 · 2012: 20
FWCI
7.02
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (R01NS054773)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR054926)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
PINK1, Parkinson's disease, PARK6, mitochondrial fission, Drp1, mitochondrial dynamics, electron transport chain, complex I, cytochrome c oxidase, oxidative phosphorylation, mitochondrial bioenergetics, Drosophila model, mitochondrial respiration, ATP production
MeSH terms
PTEN-Induced Putative Kinase, Adenosine Triphosphate, Animals, Electron Transport Complex IV, Cytoskeletal Proteins, Disease Models, Animal, Drosophila melanogaster, Electron Transport, Humans, Mitochondria, Mutation, Oxidative Phosphorylation, Oxygen Consumption, Parkinson Disease, Blotting, Western, Protein Serine-Threonine Kinases, GTP-Binding Proteins, Drosophila Proteins, Animals, Genetically Modified, Electron Transport Complex I, Gene Knockout Techniques

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