Evidence map›Paper›PMID 22403686›Full record

ArticlePloS one2012

DJ-1 null dopaminergic neuronal cells exhibit defects in mitochondrial function and structure: involvement of mitochondrial complex I assembly.

Jun Young Heo, Ji Hoon Park, Soung Jung Kim, Kang Sik Seo, Jeong Su Han, Sang Hee Lee, Jin Man Kim, Jong Il Park, Seung Kiel Park, Kyu Lim and 3 more

Abstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

49 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Integrated Behavioral and Proteomic Characterization of MPPInternational journal of molecular sciences · 2025
    Article
  3. Article
  4. Mitochondrial Dysfunction in Genetic and Non-Genetic Parkinson's Disease.International journal of molecular sciences · 2025
    Review
  5. Review
  6. Involvement of Mitochondria in Parkinson's Disease.International journal of molecular sciences · 2023
    Review
  7. Article
  8. Review
  9. Review
  10. Review
  11. Review
  12. Review
  13. Mitochondrial Respiratory Chain Supercomplexes: From Structure to Function.International journal of molecular sciences · 2022
    Review
  14. Article
  15. Review
  16. Article
  17. Review
  18. Review
  19. Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors.

Jun Young HeoDepartment of Biochemistry, Chungnam National University School of Medicine, Daejeon, Korea.
Ji Hoon Park
Soung Jung Kim
Kang Sik Seo
Jeong Su Han
Sang Hee Lee
Jin Man Kim
Jong Il Park
Seung Kiel Park
Kyu Lim
Byung Doo Hwang
Minho Shong
Gi Ryang Kweon

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

DJ-1 is a Parkinson's disease-associated gene whose protein product has a protective role in cellular homeostasis by removing cytosolic reactive oxygen species and maintaining mitochondrial function. However, it is not clear how DJ-1 regulates mitochondrial function and why mitochondrial dysfunction is induced by DJ-1 deficiency. In a previous study we showed that DJ-1 null dopaminergic neuronal cells exhibit defective mitochondrial respiratory chain complex I activity. In the present article we investigated the role of DJ-1 in complex I formation by using blue native-polyacrylamide gel electrophoresis and 2-dimensional gel analysis to assess native complex status. On the basis of these experiments, we concluded that DJ-1 null cells have a defect in the assembly of complex I. Concomitant with abnormal complex I formation, DJ-1 null cells show defective supercomplex formation. It is known that aberrant formation of the supercomplex impairs the flow of electrons through the channels between respiratory chain complexes, resulting in mitochondrial dysfunction. We took two approaches to study these mitochondrial defects. The first approach assessed the structural defect by using both confocal microscopy with MitoTracker staining and electron microscopy. The second approach assessed the functional defect by measuring ATP production, O(2) consumption, and mitochondrial membrane potential. Finally, we showed that the assembly defect as well as the structural and functional abnormalities in DJ-1 null cells could be reversed by adenovirus-mediated overexpression of DJ-1, demonstrating the specificity of DJ-1 on these mitochondrial properties. These mitochondrial defects induced by DJ-1mutation may be a pathological mechanism for the degeneration of dopaminergic neurons in Parkinson's disease.

Indexed as

Gene DeletionAnimalsDopaminergic NeuronsElectron Transport Complex IGene Expression RegulationHumansMiceMitochondriaMitochondrial DiseasesOncogene ProteinsParkinson DiseasePeroxiredoxinsProtein Deglycase DJ-1Electron Transport Complex IOncogene ProteinsPARK7 protein, mousePeroxiredoxinsProtein Deglycase DJ-1

Identifiers

PMID22403686
PMCPMC3293835

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.