Cited by 95Alzheimer's disease research and treatmentsDown syndrome and intellectual disability researchRNA Research and Splicing

Dyrk1A overexpression leads to increase of 3R-tau expression and cognitive deficits in Ts65Dn down syndrome mice

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Yin, Xiaomin, Jin, Nana, Shi, Jianhua, Zhang, Yanchong, Wu, Yue, Gong, Cheng-Xin, Iqbal, Khalid, Liu, Fei·2017·Scientific Reports

Abstract

Alternative splicing of tau exon 10 generates tau isoforms with three or four microtubule-binding repeats, 3R-tau and 4R-tau, which is equally expressed in adult human brain. Imbalanced expression in 3R-tau and 4R-tau has been found in several sporadic and inherited tauopathies, suggesting that dysregulation of tau exon 10 is sufficient to cause neurodegenerative diseases. We previously reported that Dyrk1A, which is overexpressed in Down syndrome brains, regulates alternative splicing of exogenous tau exon 10. In the present study, we investigated the regulation of endogenous tau exon 10 splicing by Dyrk1A. We found that inhibition of Dyrk1A enhanced tau exon 10 inclusion, leading to an increase in 4R-tau/3R-tau ratio in differentiated-human neuronal progenitors and in the neonatal rat brains. Accompanied with overexpression of Dyrk1A, 3R-tau was increased and 4R-tau was decreased in the neonatal brains of Ts65Dn mice, a model of Down syndrome. Treatment with Dyrk1A inhibitor, green tea flavonol epigallocatechin-gallate (EGCG), from gestation to adulthood suppressed 3R-tau expression and rescued anxiety and memory deficits in Ts65Dn mouse brains. Thus, Dyrk1A might be an ideal therapeutic target for Alzheimer’s disease, especially for Down syndrome and EGCG which inhibits Dyrk1A may have potential effect on the treatment or prevention of this disease.

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  • A previous study of DYRK1A protein levels in the forebrain of Ts65Dn mice at P5, P10, P15, P20, P25, P30, and P35 found that trisomic mice showed significantly elevated levels of DYRK1A protein in the forebrain at all seven ages.

    “A previous study of DYRK1A protein levels in the forebrain of Ts65Dn mice at P5, P10, P15, P20, P25, P30, and P35 in Ts65Dn mice (sex not specified) found that trisomic mice showed significantly elevated levels of DYRK1A protein in the forebrain at all seven ages (Yin et al., 2017).”

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Authors
Yin, X., Jin, N., Shi, J., Zhang, Y., Wu, Y., Gong, C.-X., Iqbal, K., & Liu, F.
Affiliations
  • Capital Medical University (CN)
  • Nantong University (CN)
Corresponding author
Liu, Fei
Venue
Scientific Reports
Published
2017-04-04
Volume
7
Issue
1
Pages
619-619
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2601070421
Cited by
93
References
43
Citations by year
2026: 9 · 2025: 7 · 2024: 8 · 2023: 13 · 2022: 14 · 2021: 8 · 2020: 6 · 2019: 13 · 2018: 9 · 2017: 6
FWCI
6.88
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Alzheimer's Association (DSAD-15-363172)
  • Office for People With Developmental Disabilities
  • National Natural Science Foundation of China (81503077, 31671046, 81030059)
  • Government of Jiangsu Province
  • Nantong University
  • Jiangsu Provincial Department of Education
  • Priority Academic Program Development of Jiangsu Higher Education Institutions
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
Keywords
DYRK1A, 3R tau, 4R tau, Down syndrome, Ts65Dn mouse model, epigallocatechin gallate, DYRK1A inhibitors, cognitive impairment, anxiety, Alzheimer's disease, tauopathy
MeSH terms
Dyrk Kinases, Animals, Behavior, Animal, Brain, Disease Models, Animal, Down Syndrome, Exons, Gene Expression Regulation, Humans, Learning, Memory, Mice, Transgenic, Microtubules, Protein Binding, Protein-Tyrosine Kinases, tau Proteins, Protein Serine-Threonine Kinases, Alternative Splicing, Mice, Rats, Cognitive Dysfunction

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