Pharmacological Strategies for Overcoming Multidrug Resistance to Chemotherapy
T A Fedotcheva1, N L Shimanovsky1
1Pirogov Russian National Research Medical University, Moscow, 1 Ostrovityanova St., 117997 Russia.
Abstract:
Actual mechanisms of multidrug resistance (MDR) to chemotherapy in oncology are considered. ABC-transporters such as P-glycoprotein, BCRP protein, and MRP proteins take part in the development of resistance. The review presents the main classes of chemosensitizers, i.e., inhibitors of ABC transporters of the 1st-4th generations. Plant polyphenols, i.e., flavonoids, are commonly referred to as the last (4th) generation of MDR inhibitors. Chemosensitizers of different classes should be chosen with allowance for the patient mutation-expression profile and the receptor status of a particular tumor. The appropriate dosage of the chemosensitizer and the administration schedule can enhance the process of counteracting MDR.
Insights
Multidrug resistance (MDR) in cancer chemotherapy involves ABC-transporters. Fourth-generation inhibitors, like plant flavonoids, offer new strategies to overcome MDR by targeting these transporters.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Multidrug resistance (MDR) significantly limits chemotherapy efficacy in cancer treatment.
- ATP-binding cassette (ABC) transporters, including P-glycoprotein, BCRP, and MRP proteins, are key mediators of MDR.
- Understanding the mechanisms of MDR is crucial for developing effective cancer therapies.
Purpose of the Study:
- To review the mechanisms of MDR in oncology.
- To present the different generations of chemosensitizers, focusing on ABC transporter inhibitors.
- To highlight the role of plant polyphenols (flavonoids) as fourth-generation MDR inhibitors.
Main Methods:
- Literature review of existing research on MDR mechanisms and chemosensitizers.
- Categorization of chemosensitizers into four generations based on their targets and development.
- Analysis of the role of specific ABC transporters in conferring drug resistance.
Main Results:
- Identified ABC-transporters as critical players in the development of MDR.
- Described four generations of chemosensitizers, with a focus on ABC transporter inhibitors.
- Highlighted plant polyphenols (flavonoids) as promising fourth-generation MDR inhibitors.
Conclusions:
- Chemosensitizer selection should be tailored to individual patient mutation-expression profiles and tumor receptor status.
- Optimizing the dosage and administration schedule of chemosensitizers can improve the effectiveness of overcoming MDR.
- Targeting ABC transporters with novel chemosensitizers, including flavonoids, holds potential for enhancing cancer chemotherapy outcomes.
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