Cited by 194Neurogenesis and neuroplasticity mechanismsDown syndrome and intellectual disability researchDevelopmental Biology and Gene Regulation

The Down syndrome-related protein kinase DYRK1A phosphorylates p27Kip1and Cyclin D1 and induces cell cycle exit and neuronal differentiation

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Soppa, Ulf, Schumacher, Julian, Florencio Ortiz, Victoria, Pasqualon, Tobias, Tejedor, Francisco, Becker, Walter·2014·Cell Cycle

Abstract

A fundamental question in neurobiology is how the balance between proliferation and differentiation of neuronal precursors is maintained to ensure that the proper number of brain neurons is generated. Substantial evidence implicates DYRK1A (dual specificity tyrosine-phosphorylation-regulated kinase 1A) as a candidate gene responsible for altered neuronal development and brain abnormalities in Down syndrome. Recent findings support the hypothesis that DYRK1A is involved in cell cycle control. Nonetheless, how DYRK1A contributes to neuronal cell cycle regulation and thereby affects neurogenesis remains poorly understood. In the present study we have investigated the mechanisms by which DYRK1A affects cell cycle regulation and neuronal differentiation in a human cell model, mouse neurons, and mouse brain. Dependent on its kinase activity and correlated with the dosage of overexpression, DYRK1A blocked proliferation of SH-SY5Y neuroblastoma cells within 24 h and arrested the cells in G₁ phase. Sustained overexpression of DYRK1A induced G₀ cell cycle exit and neuronal differentiation. Furthermore, we provide evidence that DYRK1A modulated protein stability of cell cycle-regulatory proteins. DYRK1A reduced cellular Cyclin D1 levels by phosphorylation on Thr286, which is known to induce proteasomal degradation. In addition, DYRK1A phosphorylated p27(Kip1) on Ser10, resulting in protein stabilization. Inhibition of DYRK1A kinase activity reduced p27(Kip1) Ser10 phosphorylation in cultured hippocampal neurons and in embryonic mouse brain. In aggregate, these results suggest a novel mechanism by which overexpression of DYRK1A may promote premature neuronal differentiation and contribute to altered brain development in Down syndrome.

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  • Overexpression of DYRK1A/Dyrk1a both in vivo and in vitro results in the nuclear export of Cyclin D1, reducing Cyclin D1 protein levels at multiple developmental ages in TgDyrk1a mice (E11.5 and E14.5).

    “Overexpression of DYRK1A/Dyrk1a both in vivo and in vitro results in the nuclear export of Cyclin D1, resulting in reductions in Cyclin D1 protein levels at multiple developmental ages in TgDyrk1a mice (E11.5 & E14.5) (Najas et al., 2015; Park et al., 2010; Soppa et al., 2014; Yabut et al., 2010).”

    From Sex-specific developmental alterations in DYRK1A expression in the brain of a Down syndrome mouse model (2024) · cites this paper as Soppa et al., 2014

    The Results section (page not provided) reports that DYRK1A overexpression reduced Cyclin D1 protein levels in cultured SH-SY5Y cells. The Discussion reports nuclear export in neuronal cells as a finding from an earlier study. This paper does not establish that overexpression caused Cyclin D1 export or reduced its levels in TgDyrk1a mice at E11.5 and E14.5. (LLM, conf=0.88)

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  • DYRK1A/Dyrk1a overexpression results in more cells in the G1/0 phase versus S or G2/M phase, leading to cell proliferation deficits, premature cell exit and differentiation, and the nuclear export of Cyclin D1.

    “In addition, DYRK1A/Dyrk1a overexpression results in more cells in the G1/0 phase versus S or G2/M phase, leading to cell proliferation deficits, premature cell exit and differentiation, and the nuclear export of Cyclin D1 (Najas et al., 2015; Soppa et al., 2014).”

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Authors
Soppa, U., Schumacher, J., Florencio Ortiz, V., Pasqualon, T., Tejedor, F., & Becker, W.
Affiliations
  • Universitat de Miguel Hernández d'Elx (ES)
  • RWTH Aachen University (DE)
Corresponding author
Becker, Walter
Venue
Cell Cycle
Published
2014-05-07
Volume
13
Issue
13
Pages
2084-2100
ISSN
  • 1538-4101 (ISSN-L)
  • 1551-4005
OpenAlex
W2015658471
Cited by
189
References
80
Citations by year
2026: 20 · 2025: 10 · 2024: 16 · 2023: 19 · 2022: 15 · 2021: 22 · 2020: 11 · 2019: 12 · 2018: 10 · 2017: 17 · 2016: 18 · 2015: 17 · 2014: 2
FWCI
6.26
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Cell Cycle (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
  • RWTH Publications (RWTH Aachen) (submittedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
DYRK1A, Down syndrome, p27, cyclin D1, protein phosphorylation, cell cycle exit, neuronal differentiation, neurogenesis, G1 cell cycle arrest, protein stability, proteasomal degradation, SH-SY5Y cells, hippocampal neurons, kinase activity
MeSH terms
Dyrk Kinases, Animals, Brain, Cell Cycle, Cell Differentiation, Cell Line, Down Syndrome, Humans, Mice, Inbred ICR, Neurons, Phosphorylation, Protein-Tyrosine Kinases, Serine, Threonine, Protein Serine-Threonine Kinases, Cyclin D1, Cyclin-Dependent Kinase Inhibitor p27, Neurogenesis, Primary Cell Culture

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