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Related Experiment Videos

[Chemosensitivity testing on human bladder cancer cell lines, using MTT-assay].

M Sawamura, K Odajima, K Nagakura

    Nihon Hinyokika Gakkai Zasshi. the Japanese Journal of Urology
    |August 1, 1989
    PubMed
    Summary

    This study evaluated anticancer drug sensitivity in human transitional cancer cells. Combining hyperthermia with chemotherapy showed enhanced efficacy for certain drugs, with MTT-assay proving a reliable method for chemosensitivity testing.

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    Area of Science:

    • Oncology
    • Cancer Cell Biology
    • Pharmacology

    Background:

    • Transitional cell carcinoma (TCC) is a significant malignancy.
    • Evaluating novel therapeutic strategies is crucial for improving patient outcomes.
    • Understanding drug sensitivity in TCC cell lines provides a basis for clinical treatment.

    Purpose of the Study:

    • To assess the chemosensitivity of human TCC cell lines (T-24, MGH-U1, KU-1) to various anticancer agents.
    • To investigate the combined effects of 42°C hyperthermia and chemotherapy on TCC cell growth.
    • To compare the efficacy of the dye exclusion assay (DEA) and MTT-assay for chemosensitivity testing.

    Main Methods:

    • Cultured human TCC cell lines were exposed to graded concentrations of doxorubicin (DOX), mitomycin C (MMC), bleomycin (BLM), peplomycin (PEP), and cis-diamminedichloroplatinum (II) (CDDP) for 2-48 hours.

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  • Chemosensitivity tests were performed with and without 42°C hyperthermia.
  • Viable cell numbers were quantified using both DEA and MTT-assay.

    • Main Results:

    • Doxorubicin (DOX) showed growth suppression at 2-hour exposure. Doxorubicin (DOX), mitomycin C (MMC), and cis-diamminedichloroplatinum (II) (CDDP) demonstrated significant growth inhibition at 6- and 48-hour exposures.
    • Hyperthermia (42°C) enhanced the efficacy of mitomycin C (MMC) and cis-diamminedichloroplatinum (II) (CDDP), but not doxorubicin (DOX).
    • The MTT-assay showed good correlation with the dye exclusion assay (DEA) and is a viable alternative for chemosensitivity testing.

    Conclusions:

    • Doxorubicin (DOX), mitomycin C (MMC), and cis-diamminedichloroplatinum (II) (CDDP) are effective against TCC cell lines, especially with longer exposure times.
    • Hyperthermia can potentiate the effects of certain chemotherapeutic agents in TCC.
    • The MTT-assay is a reliable, rapid, and cost-effective method for evaluating cancer cell chemosensitivity.