Cited by 58Alzheimer's disease research and treatmentsMitochondrial Function and PathologyDementia and Cognitive Impairment Research

Acetylated tau exacerbates learning and memory impairment by disturbing with mitochondrial homeostasis

Open access
Liu, Qian, Wang, Xin, Hu, Yu, Zhao, Jun-Ning, Huang, Chun-Hui, Li, Ting, Zhang, Bing-Ge, He, Ye +4 more·2023·Redox Biology

Abstract

Increased tau acetylation at K274 and K281 has been observed in the brains of Alzheimer's disease (AD) patients and animal models, and mitochondrial dysfunction are noticeable and early features of AD. However, the effect of acetylated tau on mitochondria has been unclear until now. Here, we constructed three type of tau forms, acetylated tau mutant by mutating its K274/K281 into Glutamine (TauKQ) to mimic disease-associated lysine acetylation, the non-acetylation tau mutant by mutating its K274/K281 into Arginine (TauKR) and the wild-type human full-length tau (TauWT). By overexpression of these tau forms in vivo and in vitro, we found that, TauKQ induced more severe cognitive deficits with neuronal loss, dendritic plasticity damage and mitochondrial dysfunctions than TauWT. Unlike TauWT induced mitochondria fusion, TauKQ not only induced mitochondria fission by decreasing mitofusion proteins, but also inhibited mitochondrial biogenesis via reduction of PGC-1a/Nrf1/Tfam levels. TauKR had no significant difference in the cognitive and mitochondrial abnormalities compared with TauWT. Treatment with BGP-15 rescued impaired learning and memory by attenuation of mitochondrial dysfunction, neuronal loss and dendritic complexity damage, which caused by TauKQ. Our data suggested that, acetylation at K274/281 was an important post translational modification site for tau neurotoxicity, and BGP-15 is a potential therapeutic drug for AD.

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Crossref · 10.1016/j.redox.2023.102697

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Authors
Liu, Q., Wang, X., Hu, Y., Zhao, J.-N., Huang, C.-H., Li, T., Zhang, B.-G., He, Y., Wu, Y.-Q., Zhang, Z.-J., Wang, G.-P., & Liu, G.-P.
Affiliations
  • Huazhong University of Science and Technology (CN)
  • Nantong University (CN)
  • Jinan University (CN)
Corresponding author
Liu, Gong-Ping
Venue
Redox Biology
Publisher
Elsevier BV
Published
2023-06
Volume
62
Pages
102697
ISSN
2213-2317 (ISSN-L)
OpenAlex
W4362671000
Cited by
58
References
94
Citations by year
2026: 15 · 2025: 20 · 2024: 20 · 2023: 3
FWCI
10.25
Type
journal article
Language
en
Open access
Locations
  • Redox Biology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (81801069, 82061160374, 82073821)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
tau acetylation, lysine acetylation, Alzheimer's disease, mitochondrial dysfunction, mitochondrial fission, mitochondrial fusion, mitochondrial biogenesis, PGC-1α, NRF1, TFAM, learning and memory impairment, neuronal loss, dendritic plasticity, BGP-15, post-translational modification
MeSH terms
Alzheimer Disease, Animals, Disease Models, Animal, Humans, Mitochondria, Oximes, Piperidines, tau Proteins

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