Cited by 397DNA Repair MechanismsMicrotubule and mitosis dynamicsUbiquitin and proteasome pathways

The Cdc14B-Cdh1-Plk1 Axis Controls the G2 DNA-Damage-Response Checkpoint

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Bassermann, Florian, Frescas, David, Guardavaccaro, Daniele, Busino, Luca, Peschiaroli, Angelo, Pagano, Michele·2008·Cell

Abstract

In response to DNA damage in G2, mammalian cells must avoid entry into mitosis and instead initiate DNA repair. Here, we show that, in response to genotoxic stress in G2, the phosphatase Cdc14B translocates from the nucleolus to the nucleoplasm and induces the activation of the ubiquitin ligase APC/C(Cdh1), with the consequent degradation of Plk1, a prominent mitotic kinase. This process induces the stabilization of Claspin, an activator of the DNA-damage checkpoint, and Wee1, an inhibitor of cell-cycle progression, and allows an efficient G2 checkpoint. As a by-product of APC/C(Cdh1) reactivation in DNA-damaged G2 cells, Claspin, which we show to be an APC/C(Cdh1) substrate in G1, is targeted for degradation. However, this process is counteracted by the deubiquitylating enzyme Usp28 to permit Claspin-mediated activation of Chk1 in response to DNA damage. These findings define a novel pathway that is crucial for the G2 DNA-damage-response checkpoint.

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Crossref · 10.1016/j.cell.2008.05.043

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  • Premature p21-dependent APC/C-Cdh1 activation in G2-arrested cells was thought to result from Emi1 downregulation, although a Cdc14B role was not formally excluded.

    “This premature and p21-dependent activation of APC/C-Cdh1 in G2arrested cells was thought to be due to down-regulation of the APC/C inhibitor Emi1, 74 although an implication of the Cdc14B phosphatase in this process was not formally excluded.77”

    From Senescence from G2 arrest, revisited (2015) · cites this paper as [77]

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Authors
Bassermann, F., Frescas, D., Guardavaccaro, D., Busino, L., Peschiaroli, A., & Pagano, M.
Affiliations
  • New York University (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Pagano, Michele
Venue
Cell
Publisher
Elsevier BV
Published
2008-07
Volume
134
Issue
2
Pages
256-267
ISSN
0092-8674 (ISSN-L)
OpenAlex
W1963937857
Cited by
397
References
52
Citations by year
2026: 8 · 2025: 4 · 2024: 9 · 2023: 19 · 2022: 12 · 2021: 21 · 2020: 26 · 2019: 15 · 2018: 24 · 2017: 19 · 2016: 26 · 2015: 18 · 2014: 25 · 2013: 21 · 2012: 38
FWCI
15.21
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • mediaTUM (Technical University of Munich) (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Cancer Institute (R21CA125173, R37CA076584)
  • National Institute of General Medical Sciences (R01GM057587)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
Keywords
CDC14B, CDH1, PLK1, G2 checkpoint, DNA damage response, anaphase-promoting complex, Claspin, WEE1, Chk1, USP28, deubiquitination, protein degradation, genotoxic stress
MeSH terms
Polo-Like Kinase 1, Cell Nucleus, DNA Damage, DNA Repair, Humans, Mitosis, Neoplasms, Proto-Oncogene Proteins, Signal Transduction, G2 Phase, Protein Serine-Threonine Kinases, Cell Cycle Proteins, Ubiquitin Thiolesterase, Ubiquitin-Protein Ligase Complexes, Cell Line, Tumor, Adaptor Proteins, Signal Transducing, Dual-Specificity Phosphatases, Anaphase-Promoting Complex-Cyclosome

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