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Updated: Aug 11, 2026

Combining Mitotic Cell Synchronization and High Resolution Confocal Microscopy to Study the Role of Multifunctional Cell Cycle Proteins During Mitosis
08:33

Combining Mitotic Cell Synchronization and High Resolution Confocal Microscopy to Study the Role of Multifunctional Cell Cycle Proteins During Mitosis

Published on: December 5, 2017

Aurora-A overexpression leads to override of the microtubule-kinetochore attachment checkpoint

Stéphanie Dutertre1, Claude Prigent

  • 1Groupe Cycle Cellulaire, UMR6061 CNRS-Université de Rennes 1, Faculté de Médecine, 2 Avenue du Pr Léon Bernard CS 34317, 35043 Rennes cedex, France. stephanie.dutertre@univ-rennes1.fr

Molecular Interventions
|March 3, 2004
PubMed

Insights

Overexpression of AURORA-A kinase in cancer cells causes resistance to chemotherapy drugs like paclitaxel. Targeting AURORA-A may overcome this resistance, improving cancer treatment outcomes.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • AURORA-A kinase amplification is common in epithelial cancers.
  • AURORA-A overexpression confers resistance to spindle-checkpoint inhibitors like paclitaxel.
  • AURORA-A localizes to centrosomes during mitosis.

Purpose of the Study:

  • To investigate the role of AURORA-A in cancer drug resistance.
  • To explore AURORA-A as a potential therapeutic target.

Main Methods:

  • Analysis of AURORA-A expression in epithelial malignancies.
  • Review of existing literature on AURORA-A function and drug resistance (Anand et al.).

Main Results:

  • AURORA-A overexpression disrupts spindle-microtubule attachment.
  • This disruption leads to abnormal chromosomal separation and mitotic errors.
  • Cells with abnormal mitosis enter anaphase due to faulty spindle checkpoint regulation.

Conclusions:

  • Targeting AURORA-A specifically, rather than general checkpoint proteins, may be a viable strategy.
  • Developing novel AURORA-A inhibitors could overcome paclitaxel resistance in tumors.
  • This approach holds promise for improving the efficacy of existing cancer therapeutics.

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