Evidence map›Paper›PMID 27280685›Full record

ArticleScience translational medicine2016

α-Synuclein binds to TOM20 and inhibits mitochondrial protein import in Parkinson's disease.

Roberto Di Maio, Paul J Barrett, Eric K Hoffman, Caitlyn W Barrett, Alevtina Zharikov, Anupom Borah, Xiaoping Hu, Jennifer McCoy, Charleen T Chu, Edward A Burton and 2 more

Abstract read
In one paragraph

Article in Science translational medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 376 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
376citing papers in PubMed, 1 pooled it
38.1field-weighted citation impact, top 1% of its field
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

376 citing papers in PubMed, 1 synthesis or guideline pooled it, 592 citations in OpenAlex.

  1. Pooled it
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  13. A Forward Genetic Screen inbioRxiv : the preprint server for biology · 2026
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  17. The role of the nucleus in the control of mitochondrial precursor proteins in yeast.Protein science : a publication of the Protein Society · 2026
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316 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 3 countries.

Roberto Di MaioPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA. Ri.MED Foundation, Palermo, Italy.
Paul J BarrettPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
Eric K HoffmanPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
Caitlyn W BarrettPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
Alevtina ZharikovPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA. Geriatric Research Education and Clinical Center, VA Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA.
Anupom BorahPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Life Science and Bioinformatics, Assam University, Silchar 788011, India.
Xiaoping HuPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
Jennifer McCoyPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
Charleen T ChuPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
Edward A BurtonPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA. Geriatric Research Education and Clinical Center, VA Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA.
Teresa G HastingsPittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA.
J Timothy GreenamyrePittsburgh Institute for Neurodegenerative Diseases, University of Pittsburgh, Pittsburgh, PA 15213, USA. Department of Neurology, University of Pittsburgh, Pittsburgh, PA 15213, USA. Geriatric Research Education and Clinical Center, VA Pittsburgh Healthcare System, Pittsburgh, PA 15240, USA. jgreena@pitt.edu.
Institute for Neurodegenerative Disorders · USUniversity of Pittsburgh · USRi.MED · ITVA Pittsburgh Healthcare System · US

Funding

TREATMENT OF DEPRESSION IN ALZHEIMER'S DISEASEP50AG005133 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BECKER, JAMES T. · 1985 to 2019
$43.0M
VARIABILITY, STABILITY & SMOOTHNESS OF WALKINGP30AG024827 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JENNIFER S BRACH · 2004 to 2026
$28.6M
Stress Proteins and Neuroprotection Against Parkinsonian Cell DeathP01NS059806 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CAO, GUODONG · 2009 to 2013
$6.3M
Regulation of Autophagy & Mitochondrial Recycling in Neuronal Cell Death- SupplementR01AG026389 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CHU, CHARLEEN T · 2007 to 2024
$6.0M
Training in the Neurobiology of Neurological DiseaseT32NS086749 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Omar El Gharbawie, REBECCA P SEAL · 2014 to 2026
$4.8M
MtDNA damage as a biomarker for environmental mitochondrial toxicityR01ES020718 · NIEHS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GREENAMYRE, J TIMOTHY · 2011 to 2015
$2.6M
alpha-Synuclein Inhibition of Mitochondrial Protein ImportR01NS095387 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GREENAMYRE, J TIMOTHY · 2015 to 2019
$2.2M
Pathogenic mechanisms of gene-environment interactions in Parkinson's diseaseR01ES022644 · NIEHS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BURTON, EDWARD ALAN · 2014 to 2018
$1.7M
DJ-1 in Astrocyte-Mediated Neuroprotection Against Complex I InhibitorsR01ES020327 · NIEHS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GREENAMYRE, J TIMOTHY · 2011 to 2015
$1.7M
PINK1 Regulation of Neuronal and Mitochondrial HomeostasisR01NS065789 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CHU, CHARLEEN T · 2011 to 2014
$1.3M
PINK1 Regulation of Neuronal and Mitochondrial HomeostasisR56NS065789 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CHU, CHARLEEN T · 2010 to 2016
$813k
Alpha-synuclein RNAi in a model of sporadic Parkinson's diseaseI01BX000548 · VA · VETERANS HEALTH ADMINISTRATION · PI BURTON, EDWARD ALAN · 2009 to 2012
–
BLRD VA I01 BX000548NIA NIH HHS P30 AG024827NIA NIH HHS P50 AG005133NIA NIH HHS R01 AG026389NIEHS NIH HHS R01 ES020327NIEHS NIH HHS R01 ES020718NIEHS NIH HHS R01 ES022644NINDS NIH HHS P01 NS059806NINDS NIH HHS R01 NS065789NINDS NIH HHS R01 NS095387NINDS NIH HHS R56 NS065789NINDS NIH HHS T32 NS086749
6 · The paper itself

Abstract

α-Synuclein accumulation and mitochondrial dysfunction have both been strongly implicated in the pathogenesis of Parkinson's disease (PD), and the two appear to be related. Mitochondrial dysfunction leads to accumulation and oligomerization of α-synuclein, and increased levels of α-synuclein cause mitochondrial impairment, but the basis for this bidirectional interaction remains obscure. We now report that certain posttranslationally modified species of α-synuclein bind with high affinity to the TOM20 (translocase of the outer membrane 20) presequence receptor of the mitochondrial protein import machinery. This binding prevented the interaction of TOM20 with its co-receptor, TOM22, and impaired mitochondrial protein import. Consequently, there were deficient mitochondrial respiration, enhanced production of reactive oxygen species, and loss of mitochondrial membrane potential. Examination of postmortem brain tissue from PD patients revealed an aberrant α-synuclein-TOM20 interaction in nigrostriatal dopaminergic neurons that was associated with loss of imported mitochondrial proteins, thereby confirming this pathogenic process in the human disease. Modest knockdown of endogenous α-synuclein was sufficient to maintain mitochondrial protein import in an in vivo model of PD. Furthermore, in in vitro systems, overexpression of TOM20 or a mitochondrial targeting signal peptide had beneficial effects and preserved mitochondrial protein import. This study characterizes a pathogenic mechanism in PD, identifies toxic species of wild-type α-synuclein, and reveals potential new therapeutic strategies for neuroprotection.

Indexed as

alpha-SynucleinAnimalsMembrane Transport ProteinsMitochondriaMitochondrial Precursor Protein Import Complex ProteinsMitochondrial ProteinsParkinson DiseaseProtein BindingProtein TransportRatsRats, Mutant StrainsReceptors, Cell SurfaceReceptors, Cytoplasmic and Nuclearalpha-SynucleinMembrane Transport ProteinsMitochondrial Precursor Protein Import Complex ProteinsMitochondrial ProteinsReceptors, Cell SurfaceReceptors, Cytoplasmic and NuclearTomm20 protein, rat

Identifiers

PMID27280685
PMCPMC5016095
OpenAlexW2417395660

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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.