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Multidrug resistance in prostate cancer

J P van Brussel1, G H J Mickisch

  • 1Department of Urology, Erasmus Medical Center Rotterdam, The Netherlands.

Onkologie
|May 29, 2003
PubMed

Insights

Multidrug resistance (MDR) mechanisms contribute to treatment failure in advanced hormone-refractory prostate cancer. Targeting these MDR pathways may improve therapeutic efficacy for this challenging disease.

Area of Science:

  • Oncology
  • Pharmacology
  • Cancer Biology

Background:

  • Advanced hormone-refractory prostate cancer presents a significant therapeutic challenge.
  • Current pharmaceutical treatments have not improved cancer-specific survival.
  • Chemotherapy failure may stem from multidrug resistance (MDR) mechanisms in cancer cells.

Purpose of the Study:

  • To investigate the involvement of MDR mechanisms in hormone-refractory prostate cancer.
  • To explore whether prostate cancer utilizes MDR principles against chemotherapeutic agents.

Main Methods:

  • Examination of diverse MDR pathways including MDR1, MRPs, glutathione, and apoptosis.
  • Assessment of these mechanisms in hormone-refractory prostate cancer in vitro and in vivo.

Main Results:

  • Evidence suggests the involvement of several MDR mechanisms in prostate cancer chemoresistance.
  • Functional expression of some MDR mechanisms, like MRP1, appears probable.
  • MDR pathways are partially established to varying degrees in this cancer type.

Conclusions:

  • Multidrug resistance mechanisms play a role in the chemoresistance of hormone-refractory prostate cancer.
  • Reversing, circumventing, or overcoming MDR pathways offers potential for improved treatment efficacy.
  • Targeting MDR pathways may provide new therapeutic avenues for intractable prostate cancer.

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