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Related Experiment Videos

Multidrug resistance.

V Ling, J Gerlach, N Kartner

    Breast Cancer Research and Treatment
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Mutations cause multidrug resistance in cell lines, linked to P-glycoprotein. This protein may also drive chemotherapy resistance in cancers, offering diagnostic and therapeutic potential.

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    Area of Science:

    • Molecular biology
    • Cellular biology
    • Cancer research

    Background:

    • Multidrug resistance (MDR) is a complex phenotype observed in mammalian cell lines.
    • This resistance is characterized by cross-resistance and collateral-sensitivity to various drugs.
    • A key factor implicated in MDR is the cell surface glycoprotein, P-glycoprotein.

    Purpose of the Study:

    • To investigate the role of P-glycoprotein in multidrug resistance.
    • To explore the potential involvement of P-glycoprotein in chemotherapy resistance in advanced cancers.
    • To assess P-glycoprotein as a molecular marker for cancer diagnostics and therapeutics.

    Main Methods:

    • Analysis of mutations leading to MDR phenotypes in mammalian cell lines.
    • Identification and characterization of cell surface glycoproteins associated with MDR.

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  • Speculative analysis of P-glycoprotein's role in clinical cancer chemotherapy.

    • Main Results:

    • A 170,000 dalton glycoprotein (P-glycoprotein) was identified and associated with the MDR phenotype.
    • Mutations conferring MDR are common in cell lines.
    • P-glycoprotein is a significant factor in cellular drug resistance.

    Conclusions:

    • P-glycoprotein is strongly linked to the multidrug resistance phenotype.
    • Mutations involving P-glycoprotein are hypothesized to contribute to chemotherapy failure in advanced cancers.
    • P-glycoprotein holds potential as a diagnostic and therapeutic target in oncology.