Cited by 42Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration Mechanisms

Amyloid‐β oligomers interact with neurexin and diminish neurexin‐mediated excitatory presynaptic organization

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Naito, Yusuke, Tanabe, Yuko, Lee, Alfred Kihoon, Hamel, Edith, Takahashi, Hideto·2017·Scientific Reports

Abstract

Alzheimer's disease (AD) is characterized by excessive production and deposition of amyloid-beta (Aβ) proteins as well as synapse dysfunction and loss. While soluble Aβ oligomers (AβOs) have deleterious effects on synapse function and reduce synapse number, the underlying molecular mechanisms are not well understood. Here we screened synaptic organizer proteins for cell-surface interaction with AβOs and identified a novel interaction between neurexins (NRXs) and AβOs. AβOs bind to NRXs via the N-terminal histidine-rich domain (HRD) of β-NRX1/2/3 and alternatively-spliced inserts at splicing site 4 of NRX1/2. In artificial synapse-formation assays, AβOs diminish excitatory presynaptic differentiation induced by NRX-interacting proteins including neuroligin1/2 (NLG1/2) and the leucine-rich repeat transmembrane protein LRRTM2. Although AβOs do not interfere with the binding of NRX1β to NLG1 or LRRTM2, time-lapse imaging revealed that AβO treatment reduces surface expression of NRX1β on axons and that this reduction depends on the NRX1β HRD. In transgenic mice expressing mutated human amyloid precursor protein, synaptic expression of β-NRXs, but not α-NRXs, decreases. Thus our data indicate that AβOs interact with NRXs and that this interaction inhibits NRX-mediated presynaptic differentiation by reducing surface expression of axonal β-NRXs, providing molecular and mechanistic insights into how AβOs lead to synaptic pathology in AD.

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  • Neurexins can bind to Aβ and APP, thereby preventing Aβ-induced synaptic pathology and mediating the synaptogenic activity of APP.

    “In addition, neurexins can bind to Aβ and amyloid precursor protein (APP), thereby preventing Aβ‐induced synaptic pathology and mediating the synaptogenic activity of APP. 56 , 57 , 58”

    From Deletion of neuronal <i>Idol</i> ameliorates Alzheimer's disease–related pathologies via APOE receptors (2025) · cites this paper as [57]

    The Discussion reports that neurexins bind Aβ42 oligomers. It says this interaction reduces neurexin expression on axons and may contribute to synaptic pathology; blocking the interaction is proposed as a possible way to prevent pathology. The cited paper does not establish that neurexins bind APP or mediate APP’s synaptogenic activity. No page numbers are available in our copy. (LLM, conf=0.89)

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Research works printed but not linked: 2

  1. Reissner C., Runkel F. & Missler M. Neurexins. Genome biology 14, 213 (2013). 24083347 PMC4056431
  2. Caetano F. A.. Amyloid-beta oligomers increase the localization of prion protein at the cell surface. J Neurochem 117, 538– 553 (2011). 21352228

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Authors
Naito, Y., Tanabe, Y., Lee, A. K., Hamel, E., & Takahashi, H.
Affiliations
Montreal Clinical Research Institute (CA)
Corresponding author
Takahashi, Hideto
Venue
Scientific Reports
Published
2017-02-13
Volume
7
Issue
1
Pages
42548-42548
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2587921648
Cited by
42
References
61
Citations by year
2026: 8 · 2025: 5 · 2024: 4 · 2023: 5 · 2022: 8 · 2021: 3 · 2020: 1 · 2019: 4 · 2018: 1 · 2017: 3
FWCI
1.82
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Gladstone Institutes
  • Scottish Rite Charitable Foundation of Canada
  • Alzheimer Society
  • University of California, San Francisco
  • Alzheimer Society Research Program
  • Canadian Institutes of Health Research (MOP- 126001, 133517_1, 126001)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
amyloid-beta oligomers, neurexin, Alzheimer's disease, presynaptic differentiation, synaptic dysfunction, histidine-rich domain, neuroligins, alternative splicing, amyloid precursor protein mutations, synaptic loss
MeSH terms
Alzheimer Disease, Animals, Axons, Cell Line, Cells, Cultured, Chlorocebus aethiops, Disease Models, Animal, Humans, Membrane Proteins, Nerve Tissue Proteins, Protein Binding, Cell Adhesion Molecules, Neuronal, Gene Expression, Amyloid beta-Peptides, Alternative Splicing, Presynaptic Terminals, COS Cells, Mice, Protein Interaction Domains and Motifs, Synaptic Potentials, Protein Multimerization

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