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Mechanisms of resistance to cisplatin

A Eastman

    Cancer Treatment and Research
    |January 1, 1991
    PubMed

    Insights

    Cisplatin resistance in cancer cells arises from multiple mechanisms, most commonly reduced drug accumulation. Understanding these resistance pathways is key to improving chemotherapy effectiveness.

    Area of Science:

    • Biochemistry
    • Molecular Biology
    • Oncology

    Background:

    • Cisplatin is a widely used chemotherapy drug.
    • Cancer cells can develop resistance to cisplatin, reducing treatment efficacy.
    • Several mechanisms contribute to cisplatin resistance.

    Purpose of the Study:

    • To review and summarize the known mechanisms of cisplatin resistance in cancer cells.
    • To highlight the most frequently observed resistance mechanisms.
    • To discuss the implications for future research and therapeutic strategies.

    Main Methods:

    • Literature review of studies investigating cisplatin resistance mechanisms.
    • Analysis of commonly cited mechanisms including reduced drug accumulation, increased glutathione, increased metallothionein, and enhanced DNA repair.
    • Discussion of the evidence supporting each mechanism.

    Main Results:

    • Reduced accumulation of cisplatin is the most prevalent resistance mechanism.
    • Increased glutathione and metallothionein play roles in detoxification, though evidence can be ambivalent.
    • Enhanced DNA repair is observed in some cases, but requires further investigation across more cell lines.
    • Multiple resistance mechanisms often coexist within the same cell line.

    Conclusions:

    • Cisplatin resistance is a complex phenomenon involving multiple, often concurrent, mechanisms.
    • Further research using genetic probes is needed to elucidate specific resistance pathways.
    • Clarifying these mechanisms in clinical samples may lead to improved cancer treatment outcomes.

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