Evidence map›Paper›PMID 33556113›Full record

ArticlePLoS genetics2021

α-synuclein impairs autophagosome maturation through abnormal actin stabilization.

Souvarish Sarkar, Abby L Olsen, Katja Sygnecka, Kelly M Lohr, Mel B Feany

Open access · goldAbstract read
In one paragraph

Article in PLoS genetics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
8.7field-weighted citation impact, top 2% 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

52 citing papers in PubMed, 92 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.

Souvarish SarkarDepartment of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.ORCID 0000-0002-7384-0508
Abby L OlsenDepartment of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.ORCID 0000-0002-7680-1758
Katja SygneckaDepartment of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
Kelly M LohrDepartment of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.ORCID 0000-0002-0471-505X
Mel B FeanyDepartment of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.ORCID 0000-0003-0315-7970
Brigham and Women's Hospital · US

Funding

Resource Component: Acquisition, maintenance and distribution of Drosophila stocksP40OD018537 · OD · TRUSTEES OF INDIANA UNIVERSITY · PI Cale Whitworth · 2014 to 2026
$13.5M
Genome Wide Analysis of Alpha-Synuclein NeurotoxicityR01NS098821 · NINDS · BRIGHAM AND WOMEN'S HOSPITAL · PI FEANY, MEL B · 2017 to 2021
$3.1M
Defining the genetic contribution of glia in Parkinson's disease pathogenesisK08NS109344 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI OLSEN, ABBY LAUREN · 2018 to 2022
$997k
Functional analysis of glia in alpha-synucleinopathyR21NS105151 · NINDS · BRIGHAM AND WOMEN'S HOSPITAL · PI FEANY, MEL B · 2018 to 2019
$492k
NIH HHS P40 OD018537NINDS NIH HHS K08 NS109344NINDS NIH HHS L30 NS108208NINDS NIH HHS R01 NS098821NINDS NIH HHS R21 NS105151
6 · The paper itself

Abstract

Vesicular trafficking defects, particularly those in the autophagolysosomal system, have been strongly implicated in the pathogenesis of Parkinson's disease and related α-synucleinopathies. However, mechanisms mediating dysfunction of membrane trafficking remain incompletely understood. Using a Drosophila model of α-synuclein neurotoxicity with widespread and robust pathology, we find that human α-synuclein expression impairs autophagic flux in aging adult neurons. Genetic destabilization of the actin cytoskeleton rescues F-actin accumulation, promotes autophagosome clearance, normalizes the autophagolysosomal system, and rescues neurotoxicity in α-synuclein transgenic animals through an Arp2/3 dependent mechanism. Similarly, mitophagosomes accumulate in human α-synuclein-expressing neurons, and reversal of excessive actin stabilization promotes both clearance of these abnormal mitochondria-containing organelles and rescue of mitochondrial dysfunction. These results suggest that Arp2/3 dependent actin cytoskeleton stabilization mediates autophagic and mitophagic dysfunction and implicate failure of autophagosome maturation as a pathological mechanism in Parkinson's disease and related α-synucleinopathies.

Indexed as

Actin CytoskeletonActin-Related Protein 2-3 ComplexActinsAgingalpha-SynucleinAnimalsAnimals, Genetically ModifiedAutophagosomesAutophagyDisease Models, AnimalDrosophila melanogasterHumansMicroscopy, Electron, TransmissionMitochondriaNeuronsParkinson DiseaseActin-Related Protein 2-3 ComplexActinsalpha-Synuclein

Identifiers

PMID33556113
PMCPMC7895402
OpenAlexW3126648904

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.