Cited by 106Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Tau reduction in the presence of amyloid-β prevents tau pathology and neuronal death in vivo

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DeVos, Sarah L, Corjuc, Bianca T, Commins, Caitlin, Dujardin, Simon, Bannon, Riley N, Corjuc, Diana, Moore, Benjamin D, Bennett, Rachel E +9 more·2018·Brain

Abstract

Several studies have now supported the use of a tau lowering agent as a possible therapy in the treatment of tauopathy disorders, including Alzheimer's disease. In human Alzheimer's disease, however, concurrent amyloid-β deposition appears to synergize and accelerate tau pathological changes. Thus far, tau reduction strategies that have been tested in vivo have been examined in the setting of tau pathology without confounding amyloid-β deposition. To determine whether reducing total human tau expression in a transgenic model where there is concurrent amyloid-β plaque formation can still reduce tau pathology and protect against neuronal loss, we have taken advantage of the regulatable tau transgene in APP/PS1 × rTg4510 mice. These mice develop both neurofibrillary tangles as well as amyloid-β plaques throughout the cortex and hippocampus. By suppressing human tau expression for 6 months in the APP/PS1 × rTg4510 mice using doxycycline, AT8 tau pathology, bioactivity, and astrogliosis were reduced, though importantly to a lesser extent than lowering tau in the rTg4510 alone mice. Based on non-denaturing gels and proteinase K digestions, the remaining tau aggregates in the presence of amyloid-β exhibit a longer-lived aggregate conformation. Nonetheless, lowering the expression of the human tau transgene was sufficient to equally ameliorate thioflavin-S positive tangles and prevent neuronal loss equally well in both the APP/PS1 × rTg4510 mice and the rTg4510 cohort. Together, these results suggest that, although amyloid-β stabilizes tau aggregates, lowering total tau levels is still an effective strategy for the treatment of tau pathology and neuronal loss even in the presence of amyloid-β deposition.

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  1. Jankowsky JL, Fadale DJ, Anderson J, Xu GM, Gonzales V, Jenkins NA, et al. Mutant presenilins specifically elevate the levels of the 42 residue -amyloid peptide in vivo : evidence for augmentation of a 42-specific secretase. Hum Mol Genet 2003; 13: 159-70.

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Authors
DeVos, S. L., Corjuc, B. T., Commins, C., Dujardin, S., Bannon, R. N., Corjuc, D., Moore, B. D., Bennett, R. E., Jorfi, M., Gonzales, J. A., Dooley, P. M., Roe, A. D., Pitstick, R., Irimia, D., Frosch, M. P., Carlson, G. A., & Hyman, B. T.
Affiliations
  • Harvard University (US)
  • McLaughlin Research Institute (US)
Corresponding author
Hyman, Bradley T
Venue
Brain
Published
2018-05-03
Volume
141
Issue
7
Pages
2194-2212
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
OpenAlex
W2802649373
Cited by
106
References
76
Citations by year
2026: 7 · 2025: 7 · 2024: 13 · 2023: 15 · 2022: 9 · 2021: 22 · 2020: 16 · 2019: 12 · 2018: 5
FWCI
9.45
Type
journal article
Language
en
Open access
Locations
  • Brain (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Division of Medical Sciences at Harvard University (T32 AG000222)
  • Brightfocus Foundation
  • Massachusetts Alzheimer’s Disease Center (P50AG05134)
  • JPB Foundation
  • NIH (P30 NS045776, AG026249)
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
amyloid-beta, tauopathy, Alzheimer's disease, neurofibrillary tangles, tau aggregation, neuronal cell death, rTg4510 mice, astrocyte activation
MeSH terms
Alzheimer Disease, Animals, Disease Models, Animal, Hippocampus, Humans, Mice, Transgenic, Neurons, Phosphorylation, Amyloid beta-Peptides, Amyloid beta-Protein Precursor, Neurofibrillary Tangles, tau Proteins, Tauopathies, Mice, Presenilin-1, Plaque, Amyloid

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