Cited by 1,118Alzheimer's disease research and treatmentsNeuroscience and Neuropharmacology ResearchNeuroinflammation and Neurodegeneration Mechanisms

Tau Mislocalization to Dendritic Spines Mediates Synaptic Dysfunction Independently of Neurodegeneration

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Hoover, Brian R., Reed, Miranda N., Su, Jianjun, Penrod, Rachel D., Kotilinek, Linda A., Grant, Marianne K., Pitstick, Rose, Carlson, George A. +4 more·2010·Neuron

Abstract

The microtubule-associated protein tau accumulates in Alzheimer's and other fatal dementias, which manifest when forebrain neurons die. Recent advances in understanding these disorders indicate that brain dysfunction precedes neurodegeneration, but the role of tau is unclear. Here, we show that early tau-related deficits develop not from the loss of synapses or neurons, but rather as a result of synaptic abnormalities caused by the accumulation of hyperphosphorylated tau within intact dendritic spines, where it disrupts synaptic function by impairing glutamate receptor trafficking or synaptic anchoring. Mutagenesis of 14 disease-associated serine and threonine amino acid residues to create pseudohyperphosphorylated tau caused tau mislocalization while creation of phosphorylation-deficient tau blocked the mistargeting of tau to dendritic spines. Thus, tau phosphorylation plays a critical role in mediating tau mislocalization and subsequent synaptic impairment. These data establish that the locus of early synaptic malfunction caused by tau resides in dendritic spines.

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Crossref · 10.1016/j.neuron.2010.11.030

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  • Tau is partially re-localized to the post-synaptic domain where it is thought to promote Aβ toxicity in pathological conditions by modifying NMDAR activation.

    “In this context, Tau is partially re-localized to the post-synaptic domain where it is thought to promote Aβ toxicity in pathological conditions by modifying NMDAR activation [53].”

    From The new genetic landscape of Alzheimer’s disease: from amyloid cascade to genetically driven synaptic failure hypothesis? (2019) · cites this paper as [53]

    The Discussion reports that pathological tau becomes enriched in the postsynaptic density and mislocalizes to dendritic spines. It also reports impaired NMDAR trafficking or anchoring, but does not establish that this promotes Aβ toxicity by modifying NMDAR activation; it notes that a cited study found no change in NMDAR-mediated currents. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Many disease-associated phosphorylated residues cluster within the proline-rich region of the N-terminal projection domain and the C-terminal region adjacent to the microtubule-binding repeats.

    “Many disease-associated phosphorylated residues cluster within the proline-rich region of the N-terminal projection domain and the C-terminal region adjacent to the microtubule-binding repeats (Fulga et al., 2007; Steinhilb et al., 2007; Hoover et al., 2010; Wesseling et al., 2020).”

    From Tau hyperphosphorylation impairs cooperative binding to microtubules and perturbs organelle trafficking in neurons (2026) · cites this paper as Hoover et al., 2010

    The Results section (‘Role of phosphorylation in htau mislocalization’; page unavailable) describes tau’s projection and microtubule-binding domains, while the Discussion identifies 14 disease-relevant serine and threonine phosphorylation sites. Neither passage says that these sites cluster in the two specific regions named in the claim. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • The 14 disease-associated mutations used here to mimic hyperphosphorylation are located within these regions.

    “The 14 disease-associated mutations used here to mimic hyperphosphorylation are located within these regions”

    From Tau hyperphosphorylation impairs cooperative binding to microtubules and perturbs organelle trafficking in neurons (2026) · cites this paper as Hoover et al., 2010

    The Results section describes changing 14 serine/threonine residues to glutamate to mimic phosphorylation, and Experimental Procedures lists their positions. The copy describes tau’s structural regions but does not explicitly establish that all 14 sites lie within the unspecified “these regions,” so the location claim cannot be fully checked. (LLM, conf=0.78)

    Experimental — accuracy not yet measured
  • The route of synaptic damage may be multifocal, with impaired axonal transport from tau dysfunction complemented by hyperphosphorylated tau in dendritic spines and impaired synaptic transmission.

    “The route of synaptic damage may be multifocal, as impaired axonal transport resulting from tau dysfunction may be complemented by the arrival of hyperphosphorylated tau in dendritic spines and concomitant impaired synaptic transmission [98].”

    From The neuropathological diagnosis of Alzheimer's disease (2019) · cites this paper as [98]

  • Phosphorylation can alter tau subcellular localization to dendritic spines or alter its affinity for the plasma membrane, thereby causing alterations in synaptic function.

    “Apart from its effects on microtubule binding, phosphorylation can alter tau subcellular localization to dendritic spines (127) or can alter its affinity for the plasma membrane (128), thereby causing alterations in synaptic function (127,129).”

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Authors
Hoover, B. R., Reed, M. N., Su, J., Penrod, R. D., Kotilinek, L. A., Grant, M. K., Pitstick, R., Carlson, G. A., Lanier, L. M., Yuan, L.-L., Ashe, K. H., & Liao, D.
Affiliations
  • University of Minnesota (US)
  • McLaughlin Research Institute (US)
Corresponding author
  • Ashe, Karen H.
  • Liao, Dezhi
Venue
Neuron
Publisher
Elsevier BV
Published
2010-12
Volume
68
Issue
6
Pages
1067-1081
ISSN
0896-6273 (ISSN-L)
OpenAlex
W1968553823
Cited by
1,118
References
61
Citations by year
2026: 61 · 2025: 77 · 2024: 87 · 2023: 70 · 2022: 88 · 2021: 119 · 2020: 108 · 2019: 79 · 2018: 96 · 2017: 51 · 2016: 61 · 2015: 46 · 2014: 47 · 2013: 48 · 2012: 45
FWCI
27.73
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (R01AG026252)
  • National Institute on Drug Abuse (K02DA025048, T32DA022616, R01DA020582, T32DA007234)
  • National Cancer Institute (P30CA-77598, P30CA077598)
  • National Institute of Neurological Disorders and Stroke (R01NS063214, R01NS049129, R01NS049178)
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
tau protein, hyperphosphorylation, dendritic spines, synaptic dysfunction, glutamate receptor trafficking, Alzheimer's disease, neurodegeneration, presynaptic dysfunction
MeSH terms
Animals, Cells, Cultured, Memory Disorders, Mice, Transgenic, Nerve Degeneration, Phosphorylation, Synapses, tau Proteins, Dendritic Spines, Mice, Rats

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