Cited by 96Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

The Deacetylase HDAC6 Mediates Endogenous Neuritic Tau Pathology

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Tseng, Jui-Heng, Xie, Ling, Song, Sheng, Xie, Youmei, Allen, Lauren, Ajit, Deepa, Hong, Jau-Shyong, Chen, Xian +2 more·2017·Cell Reports

Abstract

The initiating events that promote tau mislocalization and pathology in Alzheimer's disease (AD) are not well defined, partly because of the lack of endogenous models that recapitulate tau dysfunction. We exposed wild-type neurons to a neuroinflammatory trigger and examined the effect on endogenous tau. We found that tau re-localized and accumulated within pathological neuritic foci, or beads, comprised of mostly hypo-phosphorylated, acetylated, and oligomeric tau. These structures were detected in aged wild-type mice and were enhanced in response to neuroinflammation in vivo, highlighting a previously undescribed endogenous age-related tau pathology. Strikingly, deletion or inhibition of the cytoplasmic shuttling factor HDAC6 suppressed neuritic tau bead formation in neurons and mice. Using mass spectrometry-based profiling, we identified a single neuroinflammatory factor, the metalloproteinase MMP-9, as a mediator of neuritic tau beading. Thus, our study uncovers a link between neuroinflammation and neuritic tau beading as a potential early-stage pathogenic mechanism in AD.

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Crossref · 10.1016/j.celrep.2017.07.082

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  • Increased expression of HDAC6 decreases Tau acetylation, a key factor contributing to the formation of Tau aggregates.

    “Increased expression of HDAC6 decreases Tau acetylation [40], which is a key factor contributing to the formation of Tau aggregates [39, 49].”

    From Elevated SGK1 increases Tau phosphorylation and microtubule instability in Alzheimer’s patient-derived cortical neurons (2026) · cites this paper as [49]

    The Discussion reports that inhibiting HDAC6 mildly increased tau acetylation, which supports a role for HDAC6 activity in regulating it. The paper does not show that increased HDAC6 expression decreases tau acetylation; it also reports increased acetylated tau in HDAC6-containing neuritic beads. Citation [40] is attached to the HDAC6 clause, not the separate aggregation claim. (LLM, conf=0.82)

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  • Under neuroinflammatory stress, deletion or inhibition of HDAC6 suppresses mislocalization and neuritic aggregation of tau through a MMP-9-mediated mechanism.

    “However, other studies found that under neuroinflammatory stress, deletion or inhibition of HDAC6 suppresses mislocalization and neuritic aggregation of tau through a matrix metalloproteinase (MMP-9)-mediated mechanism [182].”

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  1. Takeuchi H Mizuno T Zhang G Wang J Kawanokuchi J Kuno R Suzumura A 2005 Neuritic beading induced by activated microglia is an early feature of neuronal dysfunction toward neuronal death by inhibition of mitochondrial respiration and axonal transport The Journal of biological chemistry 280 10444 10454 15640150

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Authors
Tseng, J.-H., Xie, L., Song, S., Xie, Y., Allen, L., Ajit, D., Hong, J.-S., Chen, X., Meeker, R. B., & Cohen, T. J.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • National Institute of Environmental Health Sciences (US)
Corresponding author
Cohen, Todd J.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2017-08
Volume
20
Issue
9
Pages
2169-2183
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2751317059
Cited by
93
References
72
Citations by year
2026: 2 · 2025: 9 · 2024: 12 · 2023: 14 · 2022: 13 · 2021: 9 · 2020: 13 · 2019: 15 · 2018: 6
FWCI
6.88
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • UNC Libraries
Funders
  • Alzheimer’s Association (NIRG-14-321219)
  • National Center for Advancing Translational Sciences (NCATS)
  • NIH (UL1TR001111, 1U19AI109965, R01-NS083164)
  • American Federation for Aging Research (AFAR) (RAG15247)
  • NIH/NIEHS
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
HDAC6, tau pathology, Alzheimer's disease, neuroinflammation, MMP-9, tau acetylation, tau phosphorylation, tau oligomers, aging
MeSH terms
Histone Deacetylase 6, Acetylation, Aging, Animals, Brain, Cells, Cultured, Humans, Inflammation, Phosphorylation, Mass Spectrometry, Stress, Physiological, Amyloid beta-Peptides, Neurites, tau Proteins, Mice, Knockout, Protein Multimerization

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