Cited by 320Parkinson's Disease Mechanisms and TreatmentsNuclear Receptors and SignalingMitochondrial Function and Pathology

Mitochondrial localization of DJ‐1 leads to enhanced neuroprotection

Open access
Junn, Eunsung, Jang, Won Hee, Zhao, Xin, Jeong, Byeong Seon, Mouradian, M. Maral·2009·Journal of Neuroscience Research

Abstract

Mutations in DJ‐1 (PARK7) cause recessively inherited Parkinson's disease. DJ‐1 is a multifunctional protein with antioxidant and transcription modulatory activity. Its localization in cytoplasm, mitochondria, and nucleus is recognized, but the relevance of this subcellular compartmentalization to its cytoprotective activity is not fully understood. Here we report that under basal conditions DJ‐1 is present mostly in the cytoplasm and to a lesser extent in mitochondria and nucleus of dopaminergic neuroblastoma SK‐N‐BE(2)C cells. Upon oxidant challenge, more DJ‐1 translocates to mitochondria within 3 hr and subsequently to the nucleus by 12 hr. The predominant DJ‐1 species in both mitochondria and nucleus is a dimer believed to be the functional form. Mutating cysteine 106, 53, or 46 had no impact on the translocation of DJ‐1 to mitochondria. To study the relative neuroprotective activity of DJ‐1 in mitochondria and nucleus, DJ‐1 cDNA constructs fused to the appropriate localization signal were transfected into cells. Compared with 30% protection against oxidant‐induced cell death in wild‐type DJ‐1‐transfected cells, mitochondrial targeting of DJ‐1 provided a significantly stronger (55%) cytoprotection based on lactate dehydrogenase release. Nuclear targeting of DJ‐1 preserved cells equally as well as the wild‐type protein. These observations suggest that the time frame for the translocation of DJ‐1 from the cytoplasm to mitochondria and to the nucleus following oxidative stress is quite different and that dimerized DJ‐1 in mitochondria is functional as an antioxidant not related to cysteine modification. These findings further highlight the multifaceted functions of DJ‐1 as a cytoprotector in different cellular compartments. © 2008 Wiley‐Liss, Inc.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/jnr.21831

Cites

43 of 43 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Junn, E., Jang, W. H., Zhao, X., Jeong, B. S., & Mouradian, M. M.
Affiliations
Inje University (KR)
Corresponding author
Mouradian, M. Maral
Venue
Journal of Neuroscience Research
Publisher
Wiley
Published
2008-08-18
Volume
87
Issue
1
Pages
123-129
ISSN
  • 0360-4012 (ISSN-L)
  • 1097-4547
OpenAlex
W2143048992
Cited by
320
References
43
Citations by year
2026: 6 · 2025: 15 · 2024: 12 · 2023: 18 · 2022: 21 · 2021: 24 · 2020: 19 · 2019: 16 · 2018: 23 · 2017: 16 · 2016: 18 · 2015: 10 · 2014: 24 · 2013: 23 · 2012: 19
FWCI
11.87
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Neurological Disorders and Stroke (NS053517, R01NS059869, NS059869, R21NS053517)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
DJ-1, Parkinson's disease, mitochondrial localization, subcellular compartmentalization, oxidative stress, neuroprotection, protein dimerization, antioxidant activity, nuclear translocation, cysteine modification, dopaminergic neurons
MeSH terms
Protein Deglycase DJ-1, Analysis of Variance, Cell Nucleus, Cysteine, Humans, Hydrogen Peroxide, Mitochondria, Mutation, Neuroblastoma, Transfection, Oncogene Proteins, Oxidants, Cell Death, Apoptosis, Neuroprotective Agents, Cell Line, Tumor, Intracellular Signaling Peptides and Proteins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review