Cited by 445Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

Oligomerization of Alzheimer's β-Amyloid within Processes and Synapses of Cultured Neurons and Brain

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Takahashi, Reisuke H., Almeida, Claudia G., Kearney, Patrick F., Yu, Fangmin, Lin, Michael T., Milner, Teresa A., Gouras, Gunnar K.·2004·The Journal of Neuroscience

Abstract

Multiple lines of evidence implicate β-amyloid (Aβ) in the pathogenesis of Alzheimer's disease (AD), but the mechanisms whereby Aβ is involved remain unclear. Addition of Aβ to the extracellular space can be neurotoxic. Intraneuronal Aβ42 accumulation is also associated with neurodegeneration. We reported previously that in Tg2576 amyloid precursor protein mutant transgenic mice, brain Aβ42 localized by immunoelectron microscopy to, and accumulated with aging in, the outer membranes of multivesicular bodies, especially in neuronal processes and synaptic compartments. We now demonstrate that primary neurons from Tg2576 mice recapitulate the in vivo localization and accumulation of Aβ42 with time in culture. Furthermore, we demonstrate that Aβ42 aggregates into oligomers within endosomal vesicles and along microtubules of neuronal processes, both in Tg2576 neurons with time in culture and in Tg2576 and human AD brain. These Aβ42 oligomer accumulations are associated with pathological alterations within processes and synaptic compartments in Tg2576 mouse and human AD brains.

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Crossref · 10.1523/jneurosci.5167-03.2004

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  • Intraneuronal Aβ is derived from Aβ internalized by neurons from the extracellular space through ApoE-dependent and ApoE-independent uptakes and from intrinsic Aβ that escapes exocytosis after APP cleavage in the endocytic compartment.

    “Intraneuronal Ab is derived from Ab internalized by neurons from the extracellular space through ApoE-dependent and ApoE-independent uptakes and from intrinsic Ab that escapes exocytosis after APP cleavage that takes place in the endocytic compartment.34”

    From Blocking the Interaction between Apolipoprotein E and Aβ Reduces Intraneuronal Accumulation of Aβ and Inhibits Synaptic Degeneration (2013) · cites this paper as [34]

    The Introduction (page unavailable) says extracellular Aβ42 can increase intraneuronal Aβ42, and the Results document intracellular accumulation in cultured neurons. The Discussion (page unavailable) explicitly says the mechanism by which extracellular Aβ affects intracellular Aβ42 remains unclear. The paper does not establish ApoE-dependent or ApoE-independent uptake, or that intracellular Aβ is retained after APP cleavage because it escapes exocytosis. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Intraneuronal accumulation of Aβ is a potentially important aspect of AD pathogenesis.

    “Intraneuronal accumulation of Ab is a potentially important aspect of AD pathogenesis.”
  • Intraneuronal accumulation of higher molecular weight Aβ42 oligomers (antibody M16) is invariably associated with neuritic degeneration, even prior to plaques, in vulnerable distal neurites and synaptic compartments in brains of AD transgenic mice and human AD.

    “a subsequent immuno-EM study demonstrated that intraneuronal accumulation of higher molecular weight Aβ42 oligomers (antibody M16; [210]) was invariably associated with neuritic degeneration, even prior to plaques, in vulnerable distal neurites and synaptic compartments in brains of AD transgenic mice and human AD [187].”
  • C-terminal specific Aβ42 antibodies typically are best at detecting Aβ42 monomers, and have minimal reactivity against oligomers larger than trimers.

    “C-terminal specific Aβ42 antibodies typically are best at detecting Aβ42 monomers, and have minimal reactivity against oligomers larger than trimers [187].”
  • Emerging data, such as FAD mutations and the direct association of intraneuronal Aβ42 with subcellular pathology, cell death, and behavioral and physiological abnormalities prior to plaques in AD transgenic mouse models, provide increasing evidence for the importance of intraneuronal Aβ.

    “Emerging data, such as FAD mutations noted above, and the direct association of intraneuronal Aβ42 with subcellular pathology [187, 188], cell death [23, 167], and behavioral and physiological abnormalities, even prior to plaques, in AD transgenic mouse models [140], are providing increasing evidence for the importance of intraneuronal Aβ.”

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Research works printed but not linked: 1

  1. Peters A, Palay SL, Webster Hd (1991) The fine structure of nervous system. Oxford: Oxford UP.

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Authors
Takahashi, R. H., Almeida, C. G., Kearney, P. F., Yu, F., Lin, M. T., Milner, T. A., & Gouras, G. K.
Affiliations
Cornell University (US)
Corresponding author
Gouras, Gunnar K.
Venue
The Journal of Neuroscience
Published
2004-04-07
Volume
24
Issue
14
Pages
3592-3599
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2128779293
Cited by
445
References
48
Citations by year
2026: 9 · 2025: 9 · 2024: 10 · 2023: 10 · 2022: 18 · 2021: 18 · 2020: 9 · 2019: 16 · 2018: 13 · 2017: 19 · 2016: 14 · 2015: 12 · 2014: 18 · 2013: 22 · 2012: 26
FWCI
22.01
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • American Academy of Neurology
  • National Institutes of Health (2k08ns002037-04, HL18974)
  • National Heart, Lung, and Blood Institute (HL-18974, P01HL018974)
  • National Institute of Neurological Disorders and Stroke (NS02037, R01NS045677, NS 045677)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
Alzheimer's disease, amyloid-beta, neural processes, synapses, multivesicular bodies, endosomal vesicles, microtubules, Tg2576 mice, amyloid precursor protein, neurodegeneration, primary neurons
MeSH terms
Adult, Aging, Alzheimer Disease, Animals, Brain, Cells, Cultured, Disease Models, Animal, Fluorescent Antibody Technique, Humans, Mice, Transgenic, Microtubules, Middle Aged, Neurons, Peptide Fragments, Endosomes, Synapses, Organelles, Amyloid beta-Peptides, Macromolecular Substances, Mice

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