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Updated: Jun 6, 2026

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06:00

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Targeting mitotic exit leads to tumor regression in vivo: Modulation by Cdk1, Mastl, and the PP2A/B55α,δ phosphatase

Eusebio Manchado1, María Guillamot, Guillermo de Cárcer

  • 1Spanish National Cancer Research Centre, Madrid, Spain.

Cancer Cell
|December 16, 2010
PubMed

Insights

Targeting cell division's end, Cdc20 is crucial for cancer cell anaphase. Its removal effectively regresses tumors, offering a promising therapeutic strategy for cancer treatment.

Area of Science:

  • Cell Biology
  • Cancer Therapeutics
  • Molecular Oncology

Background:

  • Targeting mitotic exit is a novel strategy for cancer therapy.
  • The anaphase-promoting complex/cyclosome (APC/C) cofactor Cdc20's role in vivo is not fully understood.

Purpose of the Study:

  • To investigate the in vivo function of Cdc20 in cell division and its therapeutic potential in cancer.
  • To identify mechanisms of mitotic exit in Cdc20-deficient cells.

Main Methods:

  • Genetically engineered mouse models for Cdc20 ablation.
  • Analysis of cell division, tumor regression, and protein activity (Cdk1, Mastl, PP2A).

Main Results:

  • Cdc20 is essential for anaphase onset in various mammalian cell types, including stem cells.
  • Cdc20 ablation leads to efficient regression of aggressive tumors.
  • Cdc20-null cells can exit mitosis via Cdk1/Mastl inactivation, dependent on PP2A-B55 complexes.

Conclusions:

  • Cdc20 is a critical regulator of mitotic exit and a potential therapeutic target in cancer.
  • Understanding mitotic exit pathways is key to developing effective cancer treatments.

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