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Targeting Aurora kinases for the treatment of prostate cancer

Edmund Chun Yu Lee1, Anna Frolov, Rile Li

  • 1Clinical Research Division, Fred Hutchinson Cancer Research Center, and Department of Pharmacology, University of Washington, Seattle, Washington 98109, USA.

Cancer Research
|May 19, 2006
PubMed

Insights

Aurora kinases A and B are highly expressed in prostate cancer, correlating with disease progression. Inhibiting these kinases with VX680 reduced cancer cell survival, suggesting a therapeutic target for prostate cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • Inappropriate Aurora kinase expression drives aberrant mitosis, centrosome irregularities, and chromosomal instability, leading to aneuploidy and cell transformation.
  • Aurora kinases A and B play critical roles in cell cycle regulation and mitosis.
  • Dysregulation of Aurora kinases is implicated in various cancers.

Purpose of the Study:

  • To investigate the expression levels and clinical significance of Aurora-A and Aurora-B in human and mouse prostate cancer.
  • To evaluate the therapeutic potential of Aurora kinase inhibitors in prostate cancer treatment.

Main Methods:

  • Quantitative analysis of Aurora-A and Aurora-B expression in clinical prostate cancer samples and cell lines.
  • Correlation analysis between Aurora kinase expression and clinical parameters (stage, invasion, margins).
  • In vitro treatment of prostate cancer cell lines with Aurora kinase inhibitor VX680, alone and in combination with doxorubicin.

Main Results:

  • Aurora-A and Aurora-B were significantly elevated in prostate cancer tissues and cell lines compared to non-neoplastic samples.
  • Aurora-A expression correlated with seminal vesicle invasion and positive surgical margins.
  • Aurora-B expression correlated with clinical staging and seminal vesicle invasion.
  • The Aurora kinase inhibitor VX680 reduced prostate cancer cell survival and enhanced the efficacy of doxorubicin.

Conclusions:

  • Aurora kinase A and B expression is a significant biomarker in prostate cancer progression.
  • Targeting Aurora kinases with small-molecule inhibitors like VX680 shows therapeutic promise for prostate cancer.
  • Combination therapy with Aurora kinase inhibitors and chemotherapy may offer enhanced treatment strategies.

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