alexa An overview of cancer multidrug resistance: a still unsolved problem.


Journal of Nursing & Care

Author(s): Lage H

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Abstract Although various mechanisms involved in anticancer multidrug resistance (MDR) can be identified, it remains a major problem in oncology. Beyond that, the introduction of new "targeted" drugs have not solved the problem. On the contrary, it has been demonstrated that the "classical" MDR-associated mechanisms are similar or identical to those causing resistance to these novel agents. These mechanisms include the enhanced activity of drug pumps, i.e. ABC or alternative transporters; modulation of cellular death pathways; alteration and repair of target molecules; and various less common mechanisms. Together they build a complex network of cellular pathways and molecular mechanisms mediating an individual MDR phenotype. Although the application of new high throughput "-omics" technologies have identified multiple new gene-/protein expression signatures or factors associated with drug resistance, so far none of these findings has been useful for creating improved diagnostic assays, for prediction of individual therapy response, or for development of updated chemosensitizers. This article was published in Cell Mol Life Sci and referenced in Journal of Nursing & Care

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