Evidence map›Paper›PMID 32209651›Full record

ArticleThe Journal of biological chemistry2020

α-Synuclein filaments from transgenic mouse and human synucleinopathy-containing brains are major seed-competent species.

Sophie A Morgan, Isabelle Lavenir, Juan Fan, Masami Masuda-Suzukake, Daniela Passarella, Michael A DeTure, Dennis W Dickson, Bernardino Ghetti, Michel Goedert

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 10% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
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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

9 authors at 3 institutions in 2 countries.

Sophie A MorganMRC Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom.ORCID 0000-0002-5542-4324
Isabelle LavenirMRC Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom.
Juan FanMRC Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom.
Masami Masuda-SuzukakeMRC Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom.ORCID 0000-0001-6760-1669
Daniela PassarellaMRC Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom.
Michael A DeTureThe Mayo Clinic, Jacksonville, Florida 32224.ORCID 0000-0002-4363-1262
Dennis W DicksonThe Mayo Clinic, Jacksonville, Florida 32224.
Bernardino GhettiDepartment of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana 46202.ORCID 0000-0002-1842-8019
Michel GoedertMRC Laboratory of Molecular Biology, Cambridge CB2 0QH, United Kingdom mg@mrc-lmb.cam.ac.uk.
MRC Laboratory of Molecular Biology · GBWinnMed · USIndiana University School of Medicine

Funding

Research Education ComponentP30AG010133 · NIA · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI SAYKIN, ANDREW J · 1991 to 2020
$37.3M
Challenging Life Events in Older PersonsK23AG001033 · NIA · UNIVERSITY OF NORTH CAROLINA CHAPEL HILL · PI DAALEMAN, TIMOTHY P · 2001 to 2005
$629k
Medical Research Council MC_U105184291NIA NIH HHS K23 AG001033NIA NIH HHS P30 AG010133
6 · The paper itself

Abstract

Assembled α-synuclein in nerve cells and glial cells is the defining pathological feature of neurodegenerative diseases called synucleinopathies. Seeds of α-synuclein can induce the assembly of monomeric protein. Here, we used sucrose gradient centrifugation and transiently transfected HEK 293T cells to identify the species of α-synuclein from the brains of homozygous, symptomatic mice transgenic for human mutant A53T α-synuclein (line M83) that seed aggregation. The most potent fractions contained Sarkosyl-insoluble assemblies enriched in filaments. We also analyzed six cases of idiopathic Parkinson's disease (PD), one case of familial PD, and six cases of multiple system atrophy (MSA) for their ability to induce α-synuclein aggregation. The MSA samples were more potent than those of idiopathic PD in seeding aggregation. We found that following sucrose gradient centrifugation, the most seed-competent fractions from PD and MSA brains are those that contain Sarkosyl-insoluble α-synuclein. The fractions differed between PD and MSA, consistent with the presence of distinct conformers of assembled α-synuclein in these different samples. We conclude that α-synuclein filaments are the main driving force for amplification and propagation of pathology in synucleinopathies.

Indexed as

alpha-SynucleinAnimalsBrainHEK293 CellsHomozygoteHumansMiceMice, TransgenicSynucleinopathiesalpha-Synucleinalpha-synuclein (α-synuclein)brain diseasefibrilLewy bodymultiple system atrophyneurodegenerationoligomerParkinson diseaseseeded aggregationsynucleinopathy

Identifiers

PMID32209651
PMCPMC7212628
OpenAlexW3013336954

What OpenQuestion holds

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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.