Cited by 96Cancer-related Molecular PathwaysNeurogenesis and neuroplasticity mechanismsProtein Kinase Regulation and GTPase Signaling

Cdk5 suppresses the neuronal cell cycle by disrupting the E2F1-DP1 complex

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Zhang, Jie, Li, Huifang, Yabut, Odessa, Fitzpatrick, Haley, D'Arcangelo, Gabriella, Herrup, Karl·2010·The Journal of Neuroscience

Abstract

Neurons that reenter a cell cycle after maturation are at increased risk for death, yet the mechanisms by which a normal neuron suppresses the cycle remain mostly unknown. Our laboratory has shown that cyclin-dependent kinase 5 (Cdk5) is a potent cell cycle suppressor, and we report here on the molecular basis of this activity. Cell cycle suppression by Cdk5 requires its binding to the p35 activator protein. The related p39 and p25 proteins cannot serve as substitutes. Unexpectedly, Cdk5 enzymatic activity is not required to perform this function. Rather, the link to cell cycle regulation is made through the formation of a previously unknown complex consisting of the p35–Cdk5 dimer and E2F1. Formation of this complex excludes the E2F1 cofactor, DP1, thus inhibiting E2F1 binding to the promoters of various cell cycle genes. This anti-cell cycle activity is most likely a neuroprotective function of Cdk5.

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Authors
Zhang, J., Li, H., Yabut, O., Fitzpatrick, H., D'Arcangelo, G., & Herrup, K.
Affiliations
Rutgers, The State University of New Jersey (US)
Corresponding author
Herrup, Karl
Venue
The Journal of Neuroscience
Published
2010-04-14
Volume
30
Issue
15
Pages
5219-5228
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2046640720
Cited by
96
References
47
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 4 · 2022: 6 · 2021: 4 · 2020: 9 · 2019: 1 · 2018: 6 · 2017: 4 · 2016: 3 · 2015: 11 · 2014: 6 · 2013: 5 · 2012: 17
FWCI
6.00
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (R01NS020591, NS20591)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
cyclin-dependent kinase 5, E2F1, DP1, p35, p39, p25, neuroprotection, postmitotic neurons, transcriptional repression
MeSH terms
Animals, Brain, Cell Cycle, Cell Nucleus, Cells, Cultured, Cytoplasm, DNA, Mice, Inbred C57BL, Mice, Transgenic, Models, Neurological, Nerve Tissue Proteins, Neurons, Phosphotransferases, Cell Line, Tumor, Transcription Factor DP1, E2F1 Transcription Factor, Cyclin-Dependent Kinase 5, Mice

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