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Live Imaging to Study Microtubule Dynamic Instability in Taxane-resistant Breast Cancers
06:02

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Microtubule active agents: beyond the taxane frontier

Patrick G Morris1, Monica N Fornier

  • 1Memorial Sloan-Kettering Cancer Center, Breast Cancer Medicine Service, New York, New York 10021, USA. morrisp1@mskcc.org

Clinical Cancer Research : an Official Journal of the American Association for Cancer Research
|November 18, 2008
PubMed

Insights

Novel anticancer drugs targeting microtubules are needed due to limitations with existing therapies like taxanes. Epothilones and other agents show promise in overcoming resistance and toxicity for improved cancer treatment.

Area of Science:

  • Cell Biology
  • Pharmacology
  • Oncology

Background:

  • Microtubules are crucial for cellular functions including transport, signaling, and mitosis.
  • Many anticancer drugs target microtubules, with Vinca alkaloids destabilizing them and taxanes stabilizing them.
  • Taxanes are widely used but face limitations such as drug resistance, hypersensitivity, and toxicities.

Purpose of the Study:

  • To highlight the need for novel microtubule-targeting agents.
  • To discuss the development and potential of alternative agents like epothilones.

Main Methods:

  • Review of existing literature on microtubule-targeting anticancer drugs.
  • Analysis of the mechanisms of action and limitations of taxanes.
  • Overview of emerging agents such as epothilones and their clinical trial status.

Main Results:

  • Taxanes, while effective, are associated with significant resistance mechanisms and toxicities.
  • Epothilones, binding near the taxane site, are under extensive clinical investigation.
  • Various other novel agents targeting microtubules at different sites are in development.

Conclusions:

  • There is a clear need for new anticancer drugs that target microtubules to overcome existing limitations.
  • Epothilones and other novel agents represent promising alternatives with potential to improve cancer therapy outcomes.

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