Evidence map›Paper›PMID 34127073›Full record

ArticleTranslational neurodegeneration2021

Parkinson's disease-associated VPS35 mutant reduces mitochondrial membrane potential and impairs PINK1/Parkin-mediated mitophagy.

Kai Yu Ma, Michiel R Fokkens, Fulvio Reggiori, Muriel Mari, Dineke S Verbeek

Open access · goldAbstract read
In one paragraph

Article in Translational neurodegeneration, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
5.3field-weighted citation impact, top 3% 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

40 citing papers in PubMed, 52 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Kai Yu MaDepartment of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Michiel R FokkensDepartment of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Fulvio ReggioriDepartment of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Muriel MariDepartment of Biomedical Sciences of Cells and Systems, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Dineke S VerbeekDepartment of Genetics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands. d.s.verbeek@umcg.nl.ORCID 0000-0002-4759-7006
University Medical Center Groningen · NL

Funding

ENW-KLEIN OCENW.KLEIN.118Marie Skłodowska-Curie Cofund 713660Marie Skłodowska Curie ETN 765912Nederlandse Organisatie voor Wetenschappelijk Onderzoek ALWOP.310Nederlandse Organisatie voor Wetenschappelijk Onderzoek ALWOP.355University of Groningen Rosalind Franklin FellowshipUniversity of Groningen U4 PhD program of the Behavioral and Cognitive Neuroscience graduate schoolZonMw TOP 91217002
6 · The paper itself

Abstract

backgroundMitochondrial dysfunction plays a prominent role in the pathogenesis of Parkinson's disease (PD), and several genes linked to familial PD, including PINK1 (encoding PTEN-induced putative kinase 1 [PINK1]) and PARK2 (encoding the E3 ubiquitin ligase Parkin), are directly involved in processes such as mitophagy that maintain mitochondrial health. The dominant p.D620N variant of vacuolar protein sorting 35 ortholog (VPS35) gene is also associated with familial PD but has not been functionally connected to PINK1 and PARK2.

methodsTo better mimic and study the patient situation, we used CRISPR-Cas9 to generate heterozygous human SH-SY5Y cells carrying the PD-associated D620N variant of VPS35. These cells were treated with a protonophore carbonyl cyanide m-chlorophenylhydrazone (CCCP) to induce the PINK1/Parkin-mediated mitophagy, which was assessed using biochemical and microscopy approaches.

resultsMitochondria in the VPS35-D620N cells exhibited reduced mitochondrial membrane potential and appeared to already be damaged at steady state. As a result, the mitochondria of these cells were desensitized to the CCCP-induced collapse in mitochondrial potential, as they displayed altered fragmentation and were unable to accumulate PINK1 at their surface upon this insult. Consequently, Parkin recruitment to the cell surface was inhibited and initiation of the PINK1/Parkin-dependent mitophagy was impaired.

conclusionOur findings extend the pool of evidence that the p.D620N mutation of VPS35 causes mitochondrial dysfunction and suggest a converging pathogenic mechanism among VPS35, PINK1 and Parkin in PD.

Indexed as

Carbonyl Cyanide m-Chlorophenyl HydrazoneCell LineHumansMembrane Potential, MitochondrialMitogensMitophagyMutationParkinson DiseaseProtein KinasesPTEN-Induced Putative KinaseUbiquitin-Protein LigasesVesicular Transport ProteinsCarbonyl Cyanide m-Chlorophenyl HydrazoneMitogensparkin proteinProtein KinasesPTEN-Induced Putative KinaseUbiquitin-Protein LigasesVesicular Transport ProteinsVPS35 protein, humanMitochondrial membrane potentialMitophagyParkinParkinson’s diseasePINK1VPS35

Identifiers

PMID34127073
PMCPMC8204421
OpenAlexW3168461493

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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.