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Targeting cancer cells by exploiting their resistance
1Brander Cancer Research Institute, New York Medical College, 19 Bradhurst Ave, Hawthorne, NY 10532, USA. m_blagosklonny@nymc.edu
Abstract:
Cancer cells are intrinsically resistant to growth arrest and can further acquire multidrug resistance. Current approaches to this problem are intended to reverse, overcome or prevent the drug resistance. However, the resistance of cancer cells can be exploited to kill resistant cells selectively, while sparing sensitive normal cells. As the simplest example, multidrug-resistant cells pump out protectors, such as pharmacological inhibitors of apoptosis. A sequence of at least two agents must include an exclusive protector, which is ineffective in resistant cancer cells, and an inclusive cytotoxic drug, which kills unprotected cells. By abolishing several dose-limiting side effects of chemotherapy, this strategy provides a means to treat selectively most deranged, aggressive and resistant cancers.
Insights
Exploiting cancer cell drug resistance offers a novel therapeutic strategy. This approach selectively kills resistant cancer cells using a sequence of drugs, sparing normal cells and reducing chemotherapy side effects.
Area of Science:
- Oncology
- Pharmacology
- Cancer Biology
Background:
- Cancer cells exhibit intrinsic resistance to growth arrest and can acquire multidrug resistance (MDR).
- Current cancer therapies aim to reverse, overcome, or prevent drug resistance.
- Cancer cell resistance mechanisms, like pumping out apoptosis inhibitors, can be leveraged for targeted therapy.
Purpose of the Study:
- To explore a novel strategy for selectively killing multidrug-resistant cancer cells.
- To develop a therapeutic approach that exploits cancer cell resistance mechanisms.
- To reduce dose-limiting side effects associated with conventional chemotherapy.
Main Methods:
- Designing a sequential drug treatment involving at least two agents.
- Utilizing an 'exclusive protector' drug ineffective against resistant cancer cells.
- Employing an 'inclusive cytotoxic' drug to eliminate unprotected cells.
Main Results:
- The proposed strategy selectively targets and eliminates resistant cancer cells.
- Sensitive normal cells are spared due to the selective nature of the treatment.
- This approach has the potential to mitigate several dose-limiting side effects of chemotherapy.
Conclusions:
- Exploiting cancer cell drug resistance provides a selective method for treating aggressive cancers.
- This strategy offers a new paradigm for cancer therapy, enhancing treatment efficacy and safety.
- The sequential administration of specific agents can overcome multidrug resistance in cancer treatment.