Cited by 859Alzheimer's disease research and treatmentsPrion Diseases and Protein MisfoldingProteoglycans and glycosaminoglycans research

Heparan sulfate proteoglycans mediate internalization and propagation of specific proteopathic seeds

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Holmes, Brandon B., DeVos, Sarah L., Kfoury, Najla, Li, Mei, Jacks, Rachel, Yanamandra, Kiran, Ouidja, Mohand O., Brodsky, Frances M. +6 more·2013·Proceedings of the National Academy of Sciences

Abstract

Significance: Prion-like propagation of proteopathic seeds may underlie the progression of neurodegenerative diseases, including the tauopathies and synucleinopathies. Aggregate entry into the cell is a crucial step in transcellular propagation. We used chemical, enzymatic, and genetic methods to identify heparan sulfate proteoglycans as critical mediators of tau aggregate binding and uptake, and subsequent seeding of normal intracellular tau. This pathway mediates aggregate uptake in cultured cells, primary neurons, and brain. α-Synuclein fibrils use the same entry mechanism to seed intracellular aggregation, whereas huntingtin fibrils do not. This establishes the molecular basis for a key step in aggregate propagation.

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Crossref · 10.1073/pnas.1301440110

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  • Tau aggregation is promoted by proteoglycans, which are present in tangles, and are involved in the prion-like spread of tau pathology.

    “Tau aggregation is promoted by proteoglycans [186], which are present in tangles, and are involved in the prion-like spread of tau pathology [187].”

    From The extracellular matrix and perineuronal nets in memory (2022) · cites this paper as [187]

    The Discussion (page not given) identifies heparan sulfate proteoglycans as mediators of tau-aggregate uptake and cell-to-cell propagation, supporting their role in prion-like spread. Our copy does not establish the other point attributed to this citation: that proteoglycans are present in tangles. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Cell surface HSPGs mediate a large portion of neuronal uptake of Tau monomers and aggregates.

    “Recent findings show that cell surface HSPGs mediate a large portion of neuronal uptake of Tau monomers and aggregates46,57.”

    From The APOE-R136S mutation protects against APOE4-driven tau pathology, neurodegeneration, and neuroinflammation (2023) · cites this paper as [57]

    The Discussion reports that HSPGs mediate tau aggregate uptake into neurons in vitro and in vivo. The Results distinguish fibrils from monomers, stating that tau repeat-domain fibrils, but not monomers, are readily internalized into neural precursor cells. This source therefore supports the aggregate portion of the claim, but not HSPG-mediated neuronal uptake of tau monomers. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • HSPGs are largely responsible for neuronal Tau uptake.

    “Previous work showed that HSPGs are largely responsible for neuronal Tau uptake46–48,57.”

    From The APOE-R136S mutation protects against APOE4-driven tau pathology, neurodegeneration, and neuroinflammation (2023) · cites this paper as [57]

    The Discussion says HSPGs mediate binding and internalization of tau aggregates into neurons, and the primary-neuron experiment reports a 43% reduction in full-length tau fibril uptake after Ext1 knockdown. The source supports a major role for HSPGs in neuronal uptake of aggregated tau, but does not establish that they are largely responsible for uptake of Tau in general. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • HSPGs are responsible for neuronal uptake of tau and the R136S mutation causes impaired binding affinity of APOE to HSPGs, leading to reduced tau pathology.

    “HSPGs are responsible for neuronal uptake of tau and the R136S mutation causes impaired binding affinity of APOE to HSPGs, leading to reduced tau pathology [15, 41, 76, 84, 85].”

    From APOE Christchurch enhances a disease-associated microglial response to plaque but suppresses response to tau pathology (2025) · cites this paper as [85]

    The Discussion (page unavailable) reports that HSPGs mediate uptake of tau aggregates into primary hippocampal neurons, supporting the first part of the sentence. The copy does not address the APOE R136S mutation, its binding affinity for HSPGs, or a resulting reduction in tau pathology (searched: R136S and APOE). (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • Neuronal uptake of exogenous Tau in culture can be competitively inhibited with the addition of heparin.

    “Additionally, neuronal uptake of exogenous Tau in culture can be competitively inhibited with the addition of heparin46,57.”

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Cites

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Research works printed but not linked: 13

  1. [41]Chandran K, Farsetta DL, Nibert ML (2002) Strategy for nonenveloped virus entry: A hydrophobic conformer of the reovirus membrane penetration protein micro 1 mediates membrane disruption. J Virol 76(19):9920 -9933.
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  6. [46]Cohlberg JA, Li J, Uversky VN, Fink AL (2002) Heparin and other glycosaminoglycans stimulate the formation of amyloid fi brils from alpha-synuclein in vitro. Biochemistry 41(5):1502 -1511.
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  9. [49]Broekelmann TJ, et al. (2005) Tropoelastin interacts with cell-surface glycosaminoglycans via its COOH-terminal domain. J Biol Chem 280(49):40939 -40947.
  10. [51]Doh-ura K, et al. (2004) Treatment of transmissible spongiform encephalopathy by intraventricular drug infusion in animal models. J Virol 78(10):4999 -5006.
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Authors
Holmes, B. B., DeVos, S. L., Kfoury, N., Li, M., Jacks, R., Yanamandra, K., Ouidja, M. O., Brodsky, F. M., Marasa, J., Bagchi, D. P., Kotzbauer, P. T., Miller, T. M., Papy-Garcia, D., & Diamond, M. I.
Affiliations
  • Washington University in St. Louis (US)
  • University of California, Berkeley (US)
  • Centre National de la Recherche Scientifique (FR)
  • University of California, San Francisco (US)
  • Laboratoire Croissance, Réparation et Régénération Tissulaires, Centre National de la Recherche Scientifique FRE24-12, Université Paris XII-Val de Marne, 94010 Créteil, France;
Venue
Proceedings of the National Academy of Sciences
Published
2013-07-29
Volume
110
Issue
33
Pages
E3138-47
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2089607910
Cited by
859
References
9
Citations by year
2026: 46 · 2025: 63 · 2024: 58 · 2023: 59 · 2022: 89 · 2021: 89 · 2020: 110 · 2019: 73 · 2018: 76 · 2017: 52 · 2016: 57 · 2015: 46 · 2014: 36 · 2013: 5
FWCI
33.33
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • National Cancer Institute (P50 CA94056, P50CA094056, P30CA091842)
  • National Institute of General Medical Sciences (R01GM038093)
  • National Institute of Neurological Disorders and Stroke (F31NS079039, P30NS057105, K08NS074194, R01NS071835)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Prion Diseases and Protein Misfolding
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Proteoglycans and glycosaminoglycans research
Keywords
heparan sulfate proteoglycans, tau fibrils, alpha-synuclein fibrils, neurodegeneration, tauopathy, synucleinopathies, EXT1, prion-like propagation, intracellular aggregation
MeSH terms
Actins, Amyloid, Animals, Flow Cytometry, Humans, Immunohistochemistry, Indoles, Male, Mice, Inbred C57BL, Microscopy, Fluorescence, Pinocytosis, tau Proteins, Heparan Sulfate Proteoglycans, Fluorescence Resonance Energy Transfer, Mice, HEK293 Cells, Neural Stem Cells

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