Cited by 432Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Alzheimer's disease-type neuronal tau hyperphosphorylation induced by Aβ oligomers

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De Felice, Fernanda G., Wu, Diana, Lambert, Mary P., Fernandez, Sara J., Velasco, Pauline T., Lacor, Pascale N., Bigio, Eileen H., Jerecic, Jasna +5 more·2008·Neurobiology of Aging

Abstract

Alzheimer's disease (AD) is characterized by presence of extracellular fibrillar A beta in amyloid plaques, intraneuronal neurofibrillary tangles consisting of aggregated hyperphosphorylated tau and elevated brain levels of soluble A beta oligomers (ADDLs). A major question is how these disparate facets of AD pathology are mechanistically related. Here we show that, independent of the presence of fibrils, ADDLs stimulate tau phosphorylation in mature cultures of hippocampal neurons and in neuroblastoma cells at epitopes characteristically hyperphosphorylated in AD. A monoclonal antibody that targets ADDLs blocked their attachment to synaptic binding sites and prevented tau hyperphosphorylation. Tau phosphorylation was blocked by the Src family tyrosine kinase inhibitor, 4-amino-5-(4-chlorophenyl)-7(t-butyl)pyrazol(3,4-D)pyramide (PP1), and by the phosphatidylinositol-3-kinase inhibitor LY294002. Significantly, tau hyperphosphorylation was also induced by a soluble aqueous extract containing A beta oligomers from AD brains, but not by an extract from non-AD brains. A beta oligomers have been increasingly implicated as the main neurotoxins in AD, and the current results provide a unifying mechanism in which oligomer activity is directly linked to tau hyperphosphorylation in AD pathology.

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Crossref · 10.1016/j.neurobiolaging.2007.02.029

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57 of 57 references verified0 citation errors · 0 not checkable

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  • Soluble AβOs enhance kinase activity triggering tau hyperphosphorylation at threonine 231 in primary neuronal cultures.

    “Interestingly, soluble AβOs are known to enhance kinase activity triggering tau hyperphosphorylation at threonine 231 in primary neuronal cultures.16”

    From Cerebrospinal fluid p-tau231 as an early indicator of emerging pathology in Alzheimer's disease (2022) · cites this paper as [16]

    Results §§3.3 and 3.5 show that Aβ oligomers induced tau phosphorylation at Thr231 in primary hippocampal neuronal cultures and that Src-family kinase and PI3K inhibitors blocked it. The inhibitor results implicate kinase signaling, but the paper does not establish that the oligomers enhanced kinase activity; the Discussion presents pathway activation as a possibility. (LLM, conf=0.85)

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  • Aβ promotes tau phosphorylation at disease-associated sites in in vitro and in vivo models of AD.

    “Aβ promotes tau phosphorylation at disease-associated sites in in vitro and in vivo models of AD [2, 35–41].”

    From Stabilization of Microtubule-Unbound Tau via Tau Phosphorylation at Ser262/356 by Par-1/MARK Contributes to Augmentation of AD-Related Phosphorylation and Aβ42-Induced Tau Toxicity (2016) · cites this paper as [40]

    The Results (§3.3; page unavailable) show that Aβ oligomers increased phosphorylation at the AD-associated Thr231 and Ser404 sites in cultured neurons. The Introduction (§1; page unavailable) reports tau hyperphosphorylation after Aβ injection in animals, but does not establish phosphorylation at those specific sites in vivo; this paper's own experiments were in vitro. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • In cellular and animal models, co-expression of Aβ augments tau phosphorylation at these sites and increases the levels of active GSK3 and PAR-1/MARK.

    “In cellular and animal models, co-expression of Aβ augments tau phosphorylation at these sites and increases the levels of active GSK3 and PAR-1/MARK [2, 35–41, 43, 44].”

    From Stabilization of Microtubule-Unbound Tau via Tau Phosphorylation at Ser262/356 by Par-1/MARK Contributes to Augmentation of AD-Related Phosphorylation and Aβ42-Induced Tau Toxicity (2016) · cites this paper as [40]

    Results §3.3 reports increased tau phosphorylation at Thr231 and Ser404 after Aβ-oligomer exposure in cultured rat hippocampal neurons. The Introduction also reports prior findings of GSK-3β activation and describes transgenic mice expressing APP and tau. However, this paper does not show that Aβ co-expression increases active GSK3 in its models, and the cited passages do not establish an increase in active PAR-1/MARK. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Evidence from AD neuronal culture models indicates that soluble Aβ oligomers induce tau hyperphosphorylation in multiple sites.

    “Interestingly, evidence from AD neuronal culture models indicate that soluble Aβ oligomers (AβOs) induce tau hyperphosphorylation in multiple sites.16,17”
  • Aβ oligomers can induce tau hyperphosphorylation.

    “several studies reporting that Aβ oligomers can induce tau hyperphosphorylation [51]”

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1 retracted

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Research works printed but not linked: 1

  1. [1]Abramoff MD, Magelhaes PJ, Ram SJ. Image Processing with Image J Biophotonics International. 2004;11:36–42. [[Google Scholar](https://scholar.google.com/scholar_lookup?journal=Image%20Processing%20with%20Image%20J%20Biophotonics%20International&author=MD%20Abramoff&author=PJ%20Magelhaes&author=SJ%20Ram&volume=11&publication_year=2004&pages=36-42&)]

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Authors
De Felice, F. G., Wu, D., Lambert, M. P., Fernandez, S. J., Velasco, P. T., Lacor, P. N., Bigio, E. H., Jerecic, J., Acton, P. J., Shughrue, P. J., Chen-Dodson, E., Kinney, G. G., & Klein, W. L.
Affiliations
  • Northwestern University (US)
  • Merck & Co., Inc., Rahway, NJ, USA (United States) (US)
Corresponding author
Klein, William L.
Venue
Neurobiology of Aging
Publisher
Elsevier BV
Published
2008-09
Volume
29
Issue
9
Pages
1334-1347
ISSN
0197-4580 (ISSN-L)
OpenAlex
W1976602187
Cited by
432
References
57
Citations by year
2026: 8 · 2025: 9 · 2024: 17 · 2023: 16 · 2022: 16 · 2021: 30 · 2020: 27 · 2019: 24 · 2018: 30 · 2017: 27 · 2016: 18 · 2015: 23 · 2014: 31 · 2013: 36 · 2012: 32
FWCI
14.25
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Aging (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Institute on Aging (R01 AG11385, R01AG022547, R01-AG22547, R01AG011385, R01-AG18877, R01AG029460, P30AG013854, R01AG018877)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, tau hyperphosphorylation, amyloid-beta oligomers, soluble amyloid-beta, neurofibrillary tangles, amyloid plaques, hippocampal neurons, neuroblastoma cells, Src family kinases, protein phosphatase 1, phosphatidylinositol 3-kinase, LY294002, neurotoxicity
MeSH terms
Alzheimer Disease, Cells, Cultured, Hippocampus, Humans, Neurons, Peptide Fragments, Phosphorylation, Amyloid beta-Peptides, tau Proteins

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