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Related Experiment Videos

Drug resistance.

D Hochhauser1, A L Harris

  • 1Imperial Cancer Research Fund Laboratories, University of Oxford, John Radcliffe Hospital, UK.

British Medical Bulletin
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

Chemotherapy effectively cures many childhood cancers and some adult tumors. However, drug resistance limits chemotherapy

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Area of Science:

  • Oncology
  • Cancer Biology
  • Pharmacology

Background:

  • Chemotherapy is curative for some adult and most childhood cancers.
  • It prolongs survival in specific adult malignancies like small cell lung cancer, ovarian, and breast cancer.
  • However, most solid tumors exhibit limited response (<20%) and can develop resistance.

Purpose of the Study:

  • To review the mechanisms of chemotherapy resistance in tumors.
  • To explore how understanding these mechanisms can improve cancer treatment outcomes.
  • To identify potential new therapeutic strategies based on resistance pathways.

Main Methods:

  • Literature review of chemotherapy efficacy and resistance mechanisms.
  • Analysis of established resistance pathways including multidrug resistance, glutathione transferases, and DNA repair.

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  • Synthesis of current knowledge on tumor response and relapse.

    • Main Results:

    • Chemotherapy demonstrates high cure rates in certain hematologic malignancies and childhood cancers.
    • Survival benefits are observed in specific adult solid tumors, particularly with adjuvant therapy.
    • A significant challenge remains the development of resistance, both de novo and acquired, in the majority of solid tumors.

    Conclusions:

    • Chemotherapy remains a cornerstone for treating various cancers, with notable success in pediatric and some adult malignancies.
    • Chemotherapy resistance is a major obstacle, necessitating further research into its underlying mechanisms.
    • Elucidating resistance pathways, such as multidrug resistance, glutathione transferases, and DNA repair, is crucial for developing novel therapeutic strategies and improving the overall therapeutic ratio in cancer treatment.