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Recent Advances in the Studies of Molecular Mechanisms Regulating Multidrug Resistance in Cancer Cells
A A Stavrovskaya1, E Yu Rybalkina2
1Blokhin Medical Research Center of Oncology, Ministry of Health of the Russian Federation, Moscow, 115478, Russia. astavrovskaya@yahoo.com.
Abstract:
Here we present new approaches to better understanding multidrug resistance (MDR) development in cancer cells, such as identification of components of a complex process of MDR evolution. Recent advances in the studies of MDR are discussed: 1) chemotherapy agents might be involved in the selection of cancer stem cells resulting in the elevated drug resistance and enhanced tumorigenicity; 2) cell-cell interactions have a great effect on the MDR emergence and evolution; 3) mechanotransduction is an important signaling mechanism in cell-cell interactions; 4) proteins of the ABC transporter family which are often involved in MDR might be transferred between cells via microvesicles (epigenetic MDR regulation); 5) proteins providing cell-to-cell transfer of functional P-glycoprotein (MDR1 protein) via microvesicles have been investigated; 6) P-glycoprotein may serve to regulate apoptosis, as well as transcription and translation of target genes/proteins. Although proving once again that MDR is a complex multi-faceted process, these data open new approaches to overcoming it.
Insights
This study explores multidrug resistance (MDR) in cancer, highlighting chemotherapy
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Multidrug resistance (MDR) poses a significant challenge in cancer therapy.
- Understanding the complex mechanisms driving MDR evolution is crucial for developing effective treatments.
Purpose of the Study:
- To present novel approaches for understanding the development of multidrug resistance in cancer cells.
- To identify key components involved in the evolution of multidrug resistance.
Main Methods:
- Review of recent advances in multidrug resistance research.
- Investigation of cell-cell interactions and mechanotransduction in MDR.
- Analysis of ABC transporter family proteins and P-glycoprotein transfer via microvesicles.
Main Results:
- Chemotherapy may select for drug-resistant cancer stem cells.
- Cell-cell interactions, including mechanotransduction, significantly influence MDR.
- Microvesicle-mediated transfer of ABC transporters (e.g., P-glycoprotein) contributes to epigenetic MDR regulation.
Conclusions:
- Multidrug resistance is a complex, multi-faceted process.
- Emerging data suggest novel strategies for overcoming MDR by targeting cell-cell communication and epigenetic mechanisms.
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