Cited by 494Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Cleavage of tau by asparagine endopeptidase mediates the neurofibrillary pathology in Alzheimer's disease

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Zhang, Zhentao, Song, Mingke, Liu, Xia, Kang, Seong Su, Kwon, Il-Sun, Duong, Duc M, Seyfried, Nicholas T, Hu, William T +7 more·2014·Nature Medicine

Abstract

Neurofibrillary tangles (NFTs), composed of truncated and hyperphosphorylated tau, are a common feature of numerous aging-related neurodegenerative diseases, including Alzheimer's disease (AD). However, the molecular mechanisms mediating tau truncation and aggregation during aging remain elusive. Here we show that asparagine endopeptidase (AEP), a lysosomal cysteine proteinase, is activated during aging and proteolytically degrades tau, abolishes its microtubule assembly function, induces tau aggregation and triggers neurodegeneration. AEP is upregulated and active during aging and is activated in human AD brain and tau P301S-transgenic mice with synaptic pathology and behavioral impairments, leading to tau truncation in NFTs. Tau P301S-transgenic mice with deletion of the gene encoding AEP show substantially reduced tau hyperphosphorylation, less synapse loss and rescue of impaired hippocampal synaptic function and cognitive deficits. Mice infected with adeno-associated virus encoding an uncleavable tau mutant showed attenuated pathological and behavioral defects compared to mice injected with adeno-associated virus encoding tau P301S. Together, these observations indicate that AEP acts as a crucial mediator of tau-related clinical and neuropathological changes. Inhibition of AEP may be therapeutically useful for treating tau-mediated neurodegenerative diseases.

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Authors
Zhang, Z., Song, M., Liu, X., Kang, S. S., Kwon, I.-S., Duong, D. M., Seyfried, N. T., Hu, W. T., Liu, Z., Wang, J.-Z., Cheng, L., Sun, Y. E., Yu, S. P., Levey, A. I., & Ye, K.
Affiliations
  • Emory University (US)
  • Chinese Academy of Sciences (CN)
  • Huazhong University of Science and Technology (CN)
  • Tongji University (CN)
Corresponding author
  • Cheng, Liming
  • Ye, Keqiang
Venue
Nature Medicine
Published
2014-10-19
Volume
20
Issue
11
Pages
1254-1262
ISSN
  • 1078-8956 (ISSN-L)
  • 1546-170X
OpenAlex
W2026077861
Cited by
494
References
47
Citations by year
2026: 29 · 2025: 51 · 2024: 45 · 2023: 65 · 2022: 51 · 2021: 47 · 2020: 44 · 2019: 42 · 2018: 44 · 2017: 27 · 2016: 26 · 2015: 20 · 2014: 3
FWCI
16.84
Type
journal article
Language
en
Open access
Locations
  • Nature Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Emory University
  • National Institute on Aging (P01AG014449, K23AG042856, R01AG043375, P50AG025688)
  • National Institute of Neurological Disorders and Stroke (R01NS060680, R01NS045627)
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
tau cleavage, asparaginyl endopeptidase, Alzheimer's disease, neurofibrillary tangles, tau truncation, tau hyperphosphorylation, tau aggregation, microtubule assembly, neurodegeneration, aging, synaptic loss, cognitive impairment, lysosomal cysteine proteases
MeSH terms
Asparaginyl Endopeptidase, Aged, Aging, Alzheimer Disease, Amino Acid Sequence, Animals, Asparagine, Brain, Calpain, Cognition, Cysteine Endopeptidases, Humans, Memory Disorders, Mice, Transgenic, Molecular Sequence Data, Neurotoxins, Phosphorylation, Solubility, Synapses, Up-Regulation, Neurofibrillary Tangles, tau Proteins, Protein Structure, Tertiary, Caspases, Gene Knockout Techniques, HEK293 Cells

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