Cited by 98Alzheimer's disease research and treatmentsParkinson's Disease Mechanisms and TreatmentsAmyotrophic Lateral Sclerosis Research

Appoptosin-Mediated Caspase Cleavage of Tau Contributes to Progressive Supranuclear Palsy Pathogenesis

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Zhao, Yingjun, Tseng, I-Chu, Heyser, Charles J., Rockenstein, Edward, Mante, Michael, Adame, Anthony, Zheng, Qiuyang, Huang, Timothy +11 more·2015·Neuron

Abstract

Progressive supranuclear palsy (PSP) is a movement disorder characterized by tau neuropathology where the underlying mechanism is unknown. An SNP (rs1768208 C/T) has been identified as a strong risk factor for PSP. Here, we identified a much higher T-allele occurrence and increased levels of the pro-apoptotic protein appoptosin in PSP patients. Elevations in appoptosin correlate with activated caspase-3 and caspase-cleaved tau levels. Appoptosin overexpression increased caspase-mediated tau cleavage, tau aggregation, and synaptic dysfunction, whereas appoptosin deficiency reduced tau cleavage and aggregation. Appoptosin transduction impaired multiple motor functions and exacerbated neuropathology in tau-transgenic mice in a manner dependent on caspase-3 and tau. Increased appoptosin and caspase-3-cleaved tau were also observed in brain samples of patients with Alzheimer's disease and frontotemporal dementia with tau inclusions. Our findings reveal a novel role for appoptosin in neurological disorders with tau neuropathology, linking caspase-3-mediated tau cleavage to synaptic dysfunction and behavioral/motor defects.

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Crossref · 10.1016/j.neuron.2015.08.020

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  • In healthy neurons, Tau is observed in the dendritic shaft as well as in pre- and post-synaptic structures.

    “Interestingly, several recent studies suggest that Tau may directly regulate synaptic function and plasticity: in healthy neurons, Tau is observed in the dendritic shaft as well as in pre- and post-synaptic structures [92, 94, 156].”

    From The new genetic landscape of Alzheimer’s disease: from amyloid cascade to genetically driven synaptic failure hypothesis? (2019) · cites this paper as [156]

    The Results section (page unavailable) reports endogenous cleaved tau in dendrites, cleaved tau in synaptosomal and postsynaptic-density fractions, and full-length tau in synaptosomal fractions. It does not establish that tau occupies both pre- and postsynaptic structures in healthy neurons: the synaptosomal fraction is not identified as presynaptic, and relatively little full-length tau was found in the postsynaptic-density fraction. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Tau is also present in dendrites and postsynaptic compartments.

    “Recent studies demonstrate that tau is also present in dendrites and postsynaptic compartments [128–130].”
  • Appoptosin overexpression activates caspase-3 and enhances caspase-3 dependent tau cleavage, thereby enhancing motor dysfunction in JNPL3 tau transgenic mice.

    “Appoptosin overexpression activates caspase-3 and enhances caspase-3 dependent tau cleavage, thereby enhancing motor dysfunction in JNPL3 tau transgenic mice [130].”
  • Tau-421 can be found in PSD fractions from primary neuronal cultures.

    “In addition, tau-421 can be found in PSD fractions from primary neuronal cultures [130]”
  • Caspase-3 cleavage leads to dissociation of tau from microtubules, and enhanced tau aggregation.

    “Caspase-3 cleavage leads to the dissociation of tau from microtubules, and enhanced tau aggregation [130, 191, 195].”

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Authors
Zhao, Y., Tseng, I.-C., Heyser, C. J., Rockenstein, E., Mante, M., Adame, A., Zheng, Q., Huang, T., Wang, X., Arslan, P. E., Chakrabarty, P., Wu, C., Bu, G., Mobley, W. C., Zhang, Y.-W., St. George-Hyslop, P., Masliah, E., Fraser, P., & Xu, H.
Affiliations
  • Sanford Burnham Prebys Medical Discovery Institute (US)
  • University of California San Diego (US)
  • Xiamen University (CN)
  • University of Florida (US)
  • University of Toronto (CA)
Corresponding author
Xu, Huaxi
Venue
Neuron
Publisher
Elsevier BV
Published
2015-09
Volume
87
Issue
5
Pages
963-975
ISSN
0896-6273 (ISSN-L)
OpenAlex
W1918417411
Cited by
98
References
53
Citations by year
2026: 2 · 2025: 6 · 2024: 8 · 2023: 7 · 2022: 5 · 2021: 15 · 2020: 7 · 2019: 12 · 2018: 14 · 2017: 11 · 2016: 11
FWCI
8.75
Type
journal article
Language
en
Update notices
erratum (2024-12-04)
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
  • Alzheimer's Association
  • Wellcome Trust (089703, 081864)
  • National Natural Science Foundation of China (91332114, U1405222, 91332112, 81161120496, 81225008)
  • University of Toronto
  • National Institutes of Health (1pn1ey016525-01)
  • Medical Research Council (MC_G1000734)
  • National Institute on Aging (R01AG044420, R01AG038710, R01AG027924, R01AG018440, P50AG005131, R01AG011385, R01AG5131, R01AG021173, RF1AG046205, R01AG035355, P50AG016574)
  • National Eye Institute ((PN1 EY016525, PN2EY016525)
  • National Institute of Neurological Disorders and Stroke (P30NS076411, R01NS076411, R01NS066072, R01NS046673, P01NS074969)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Neurology › Amyotrophic Lateral Sclerosis Research
Keywords
caspase-3, tau cleavage, progressive supranuclear palsy, tau aggregation, synaptic dysfunction, T allele, tau transgenic mice, Alzheimer's disease, frontotemporal dementia, motor impairment, apoptosis
MeSH terms
Age Factors, Aged, Aged, 80 and over, Alzheimer Disease, Animals, Brain, Cells, Cultured, Disease Models, Animal, Embryo, Mammalian, Female, Gene Expression Regulation, Humans, Male, Mice, Inbred C57BL, Mice, Transgenic, Middle Aged, Myelin Proteins, Supranuclear Palsy, Progressive, tau Proteins, Apoptosis, Hand Strength, Polymorphism, Single Nucleotide, Apoptosis Regulatory Proteins, Mice, Rats, Caspase 3

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