Cited by 1,220Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.

ApoE4 markedly exacerbates tau-mediated neurodegeneration in a mouse model of tauopathy

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Abstract

APOE4 is the strongest genetic risk factor for late-onset Alzheimer disease. ApoE4 increases brain amyloid-β pathology relative to other ApoE isoforms. However, whether APOE independently influences tau pathology, the other major proteinopathy of Alzheimer disease and other tauopathies, or tau-mediated neurodegeneration, is not clear. By generating P301S tau transgenic mice on either a human ApoE knock-in (KI) or ApoE knockout (KO) background, here we show that P301S/E4 mice have significantly higher tau levels in the brain and a greater extent of somatodendritic tau redistribution by three months of age compared with P301S/E2, P301S/E3, and P301S/EKO mice. By nine months of age, P301S mice with different ApoE genotypes display distinct phosphorylated tau protein (p-tau) staining patterns. P301S/E4 mice develop markedly more brain atrophy and neuroinflammation than P301S/E2 and P301S/E3 mice, whereas P301S/EKO mice are largely protected from these changes. In vitro, E4-expressing microglia exhibit higher innate immune reactivity after lipopolysaccharide treatment. Co-culturing P301S tau-expressing neurons with E4-expressing mixed glia results in a significantly higher level of tumour-necrosis factor-α (TNF-α) secretion and markedly reduced neuronal viability compared with neuron/E2 and neuron/E3 co-cultures. Neurons co-cultured with EKO glia showed the greatest viability with the lowest level of secreted TNF-α. Treatment of P301S neurons with recombinant ApoE (E2, E3, E4) also leads to some neuronal damage and death compared with the absence of ApoE, with ApoE4 exacerbating the effect. In individuals with a sporadic primary tauopathy, the presence of an ε4 allele is associated with more severe regional neurodegeneration. In individuals who are positive for amyloid-β pathology with symptomatic Alzheimer disease who usually have tau pathology, ε4-carriers demonstrate greater rates of disease progression. Our results demonstrate that ApoE affects tau pathogenesis, neuroinflammation, and tau-mediated neurodegeneration independently of amyloid-β pathology. ApoE4 exerts a 'toxic' gain of function whereas the absence of ApoE is protective.

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Metadata

Authors
Initiative, A. D. N., Shi, Y., Yamada, K., Liddelow, S. A., Smith, S. T., Zhao, L., Luo, W., Tsai, R. M., Spina, S., Grinberg, L. T., Rojas, J. C., Gallardo, G., Wang, K., Roh, J., Robinson, G., Finn, M. B., Jiang, H., Sullivan, P. M., Baufeld, C., Wood, M. W., Sutphen, C., McCue, L., Xiong, C., Del-Aguila, J. L., Morris, J. C., Cruchaga, C., Fagan, A. M., Miller, B. L., Boxer, A. L., Seeley, W. W., Butovsky, O., Barres, B. A., Paul, S. M., & Holtzman, D. M.
Affiliations
  • Washington University in St. Louis (US)
  • Stanford Medicine (US)
  • Brigham and Women's Hospital (US)
  • Cornell University (US)
  • University of California, San Francisco (US)
  • Voyager Therapeutics (United States) (US)
Corresponding author
Holtzman, David M.
Venue
Nature
Published
2017-09
Volume
549
Issue
7673
Pages
523-527
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2756959977
Cited by
1,220
References
29
Citations by year
2026: 105 · 2025: 147 · 2024: 134 · 2023: 156 · 2022: 141 · 2021: 156 · 2020: 149 · 2019: 126 · 2018: 90 · 2017: 12
FWCI
76.46
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • DukeSpace (Duke University) (submittedVersion, cc-by-nc-nd)
Funders
  • U.S. Department of Defense (U01 AG024904, AG024904)
  • Eli Lilly and Company (U01 AG024904, AG024904, W81XWH-12-2-0012)
  • AstraZeneca
  • GlaxoSmithKline
  • Alzheimer's Disease Neuroimaging Initiative (W81XWH-12-2–0012, U01AG024904, AG024904, W81XWH-12-2-)
  • Cure Alzheimer's Fund
  • Multiple Sclerosis Society (5092A1)
  • National Institutes of Health (5u01ag024904-10, W81XWH-12-2-0012, AG023501, U01-AG024904, AG019724, AG05681, NS090934, AG024904, AG 03991, AG026276)
  • Genentech (W81XWH-12-2-0012, AG024904, U01 AG024904)
  • National Institute on Aging (U01-AG-024904, K08AG052648, K23AG055688, R01AG051812, P50AG005681, P01AG003991, RF1AG047644, R01AG038791, R01AG054672, P01AG019724, U19AG024904, P01AG026276, P50AG023501)
  • National Institute of Neurological Disorders and Stroke (K01NS096719, U54NS092089, R01NS090934, R01NS088137, RF1NS090934)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › 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
APOE ε4, tauopathy, P301S tau transgenic mice, neuroinflammation, apolipoprotein E deficiency, TNF-α, neuronal viability, tau phosphorylation, brain atrophy, gain-of-function
MeSH terms
Alleles, Animals, Cell Survival, Disease Models, Animal, Genotype, Humans, Immunity, Innate, Inflammation, Mice, Transgenic, Neurons, Phosphoproteins, Phosphorylation, Tumor Necrosis Factor-alpha, tau Proteins, Microglia, Mice, Knockout, Disease Progression, Coculture Techniques, Tauopathies, Mice, Apolipoprotein E4, Gene Knock-In Techniques

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