Cited by 450Prion Diseases and Protein MisfoldingAlzheimer's disease research and treatmentsAmyotrophic Lateral Sclerosis Research

Propagation and spread of pathogenic protein assemblies in neurodegenerative diseases

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Jucker, Mathias, Walker, Lary C.·2018·Nature Neuroscience

Abstract

Many neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis, are characterized by the progressive appearance of abnormal proteinaceous assemblies in the nervous system. Studies in experimental systems indicate that the assemblies originate from the prion-like seeded aggregation of specific misfolded proteins that proliferate and amass to form the intracellular and/or extracellular lesions typical of each disorder. The host in which the proteopathic seeds arise provides the biochemical and physiological environment that either supports or restricts their emergence, proliferation, self-assembly, and spread. Multiple mechanisms influence the spatiotemporal spread of seeds and the nature of the resulting lesions, one of which is the cellular uptake, release, and transport of seeds along neural pathways and networks. The characteristics of cells and regions in the affected network govern their vulnerability and thereby influence the neuropathological and clinical attributes of the disease. The propagation of pathogenic protein assemblies within the nervous system is thus determined by the interaction of the proteopathic agent and the host milieu.

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Crossref · 10.1038/s41593-018-0238-6

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  • The triphasic framework of abnormal protein creation, aggregation or lack of clearance, and propagation is shared by other neurodegenerative diseases such as amyotrophic lateral sclerosis.

    “This triphasic framework is also shared by other NDDs, such as amyotrophic lateral sclerosis [4,5].”

    From The Impact of Neurotoxin Proteins Trafficked by Primary Cilia and Extracellular Vesicles in Neurodegenerative Diseases (2025) · cites this paper as [5]

    The sections on disease progression and propagation describe misfolding, aggregation, and spread of pathogenic proteins, including SOD1 and TDP-43 associated with the ALS spectrum. They do not establish the claimed three-phase framework for ALS or identify a lack of clearance as one of its phases. The paper also qualifies the evidence: some ALS-associated proteins spread in mouse models, while in-vivo evidence remains incomplete for others. No page numbers are available in our copy. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The pathogenesis of Alzheimer's disease, Parkinson's disease, and Huntington's disease can conceptually be broken down into three phases: creation of an abnormal protein, aggregation or lack of clearance, and propagation.

    “The pathogenesis of AD, PD, and HD can conceptually be broken down into three phases: (1) creation of an abnormal protein, (2) aggregation or lack of clearance, and (3) propagation.”

    From The Impact of Neurotoxin Proteins Trafficked by Primary Cilia and Extracellular Vesicles in Neurodegenerative Diseases (2025) · cites this paper as [5]

    The Abstract and “Progression of neurodegenerative diseases and the prion paradigm” describe the emergence, aggregation, and spread of abnormal proteins, including proteins associated with AD, PD, and HD (pages not specified). But the paper does not present these as a three-phase model or identify lack of clearance as the second phase. “Propagation of other neurodegeneration-associated protein assemblies” also says definitive in-vivo evidence for a prion-like mechanism in polyglutamine-containing proteins remains to be demonstrated, making the claim about HD propagation too definite. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

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Authors
Jucker, M., & Walker, L. C.
Affiliations
  • German Center for Neurodegenerative Diseases (DE)
  • Emory University (US)
Corresponding author
  • Jucker, Mathias
  • Walker, Lary C.
Venue
Nature Neuroscience
Published
2018-09-26
Volume
21
Issue
10
Pages
1341-1349
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2891544369
Cited by
450
References
154
Citations by year
2026: 50 · 2025: 69 · 2024: 41 · 2023: 59 · 2022: 51 · 2021: 70 · 2020: 66 · 2019: 40 · 2018: 4
FWCI
4.41
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • DZNE Pub (submittedVersion)
Funders
  • National Institutes of Health (P51OD011132)
  • National Institute on Aging (P50AG025688)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
Keywords
neurodegenerative diseases, protein aggregation, prion-like seeding, protein misfolding, Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, seed propagation, neurodegeneration, host-pathogen interaction
MeSH terms
Animals, Cell Communication, Humans, Prions, Neurodegenerative Diseases

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