Cited by 1,130Parkinson's Disease Mechanisms and TreatmentsAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

α-Synuclein strains cause distinct synucleinopathies after local and systemic administration

Open access
Peelaerts, W., Bousset, L., Van der Perren, A., Moskalyuk, A., Pulizzi, R., Giugliano, M., Van den Haute, C., Melki, R. +1 more·2015·Nature

Abstract

Misfolded protein aggregates represent a continuum with overlapping features in neurodegenerative diseases, but differences in protein components and affected brain regions. The molecular hallmark of synucleinopathies such as Parkinson's disease, dementia with Lewy bodies and multiple system atrophy are megadalton α-synuclein-rich deposits suggestive of one molecular event causing distinct disease phenotypes. Glial α-synuclein (α-SYN) filamentous deposits are prominent in multiple system atrophy and neuronal α-SYN inclusions are found in Parkinson's disease and dementia with Lewy bodies. The discovery of α-SYN assemblies with different structural characteristics or 'strains' has led to the hypothesis that strains could account for the different clinico-pathological traits within synucleinopathies. In this study we show that α-SYN strain conformation and seeding propensity lead to distinct histopathological and behavioural phenotypes. We assess the properties of structurally well-defined α-SYN assemblies (oligomers, ribbons and fibrils) after injection in rat brain. We prove that α-SYN strains amplify in vivo. Fibrils seem to be the major toxic strain, resulting in progressive motor impairment and cell death, whereas ribbons cause a distinct histopathological phenotype displaying Parkinson's disease and multiple system atrophy traits. Additionally, we show that α-SYN assemblies cross the blood-brain barrier and distribute to the central nervous system after intravenous injection. Our results demonstrate that distinct α-SYN strains display differential seeding capacities, inducing strain-specific pathology and neurotoxic phenotypes.

Integrity signals

Registry

Crossref · 10.1038/nature14547

Cites

36 of 36 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

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?

  • Alpha-synuclein crossing the blood-brain barrier bidirectionally could signify an important contributory event in Parkinson's disease pathogenesis.

    “which could signify an important contributory event in PD pathogenesis (469, 563).”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [469]

  • In rodents, alpha-synuclein injected intraventricularly undergoes brain-to-blood efflux, and injected intravenously undergoes blood-to-brain influx.

    “Specifically, 𝛂 -syn injected intraventricularly and intravenously in rodents undergoes brain-to-blood efflux and blood-to-brain influx, respectively (469, 563).”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [469]

  • Alpha-synuclein crosses the blood-brain barrier bidirectionally.

    “Recent studies reveal that 𝛂 -syn crosses the BBB bidirectionally, which could signify an important contributory event in PD pathogenesis (469, 563).”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [469]

  • Systemically administered alpha-synuclein oligomers, ribbons, and fibrils cross the blood-brain barrier into the brain, where alpha-synuclein amplification and strain-specific pathology and neurotoxic phenotypes are observed.

    “Administered systemically, 𝛂 -syn oligomers, ribbons, and fibrils crossed the BBB into the brain, where 𝛂 -syn amplification and strain-specific pathology and neurotoxic phenotypes are observed (469).”

    From Blood-Brain Barrier: From Physiology to Disease and Back (2019) · cites this paper as [469]

  • After local and systemic injections, α-synuclein strains can induce distinct synucleinopathies with varying levels of toxicity and behavioral phenotypes.

    “after local and systemic injections, α‐synuclein strains can also induce distinct synucleinopathies with varying levels of toxicity and behavioral phenotypes.”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Peelaerts, W., Bousset, L., Van der Perren, A., Moskalyuk, A., Pulizzi, R., Giugliano, M., Van den Haute, C., Melki, R., & Baekelandt, V.
Affiliations
  • KU Leuven (BE)
  • Centre National de la Recherche Scientifique (FR)
  • University of Antwerp (BE)
Corresponding author
  • Melki, R.
  • Baekelandt, V.
Venue
Nature
Published
2015-06
Volume
522
Issue
7556
Pages
340-344
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2111216320
Cited by
1,130
References
36
Citations by year
2026: 41 · 2025: 59 · 2024: 83 · 2023: 89 · 2022: 105 · 2021: 126 · 2020: 110 · 2019: 139 · 2018: 130 · 2017: 114 · 2016: 93 · 2015: 41
FWCI
88.83
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
  • SDL (submittedVersion)
  • IRIS UNIMORE (University of Modena and Reggio Emilia) (submittedVersion, cc-by)
  • Lirias (KU Leuven) (submittedVersion)
Funders
Agence Nationale de la Recherche (ANR-11-BSV8-0021, ANR-09-MNPS-0013)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
alpha-synuclein strains, synucleinopathies, Parkinson's disease, multiple system atrophy, dementia with Lewy bodies, protein aggregation, fibrils, ribbons, oligomers, blood-brain barrier penetration, neurotoxicity, motor impairment, intravenous injection, neurodegeneration
MeSH terms
Animals, Blood-Brain Barrier, Brain, Female, Humans, Parkinson Disease, Phenotype, Substantia Nigra, Synapses, Rats, Wistar, Multiple System Atrophy, Lewy Body Disease, Rats, alpha-Synuclein

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