Early multidrug resistance, defined by changes in intracellular doxorubicin distribution, independent of P-glycoprotein
1991

Understanding Early Multidrug Resistance in Cancer Cells

publication Evidence: moderate

Author Information

Author(s): G.J. Schuurhuis, H.J. Broxterman, J.H.M. de Lange, H.M. Pinedo, T.H.M. van Heijningen, C.M. Kuiper, G.L. Scheffer, R.J. Scheper, C.K. van Kalken, J.P.A. Baak, J. Lankelma

Primary Institution: Netherlands Cancer Institute

Hypothesis

Is early multidrug resistance in cancer cells dependent on P-glycoprotein expression?

Conclusion

The study suggests that early multidrug resistance mechanisms can occur independently of P-glycoprotein expression.

Supporting Evidence

  • Resistance to multiple drugs has been linked to P-glycoprotein, but this study shows resistance can occur without it.
  • Cell lines were derived from a human lung cancer cell line and tested for drug resistance.
  • Doxorubicin fluorescence was measured to assess drug distribution in resistant cells.

Takeaway

Some cancer cells can resist drugs without needing a specific protein called P-glycoprotein, which is usually thought to be responsible for this resistance.

Methodology

The study involved creating resistant cell lines from a human lung cancer cell line and measuring doxorubicin distribution using laserscan microscopy.

Limitations

The study primarily focuses on specific cell lines and may not fully represent all cancer types.

Statistical Information

P-Value

p<0.01

Statistical Significance

p<0.01

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