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Overcoming Multidrug Resistance: Flavonoid and Terpenoid Nitrogen-Containing Derivatives as ABC Transporter
Bruno M F Gonçalves1, David S P Cardoso1, Maria-José U Ferreira1
1Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003 Lisboa, Portugal.
Abstract:
Multidrug resistance (MDR) in cancer is one of the main limitations for chemotherapy success. Numerous mechanisms are behind the MDR phenomenon wherein the overexpression of the ATP-binding cassette (ABC) transporter proteins P-glycoprotein (P-gp), breast cancer resistance protein (BCRP) and multidrug resistance protein 1 (MRP1) is highlighted as a prime factor. Natural product-derived compounds are being addressed as promising ABC transporter modulators to tackle MDR. Flavonoids and terpenoids have been extensively explored in this field as mono or dual modulators of these efflux pumps. Nitrogen-bearing moieties on these scaffolds were proved to influence the modulation of ABC transporters efflux function. This review highlights the potential of semisynthetic nitrogen-containing flavonoid and terpenoid derivatives as candidates for the design of effective MDR reversers. A brief introduction concerning the major role of efflux pumps in multidrug resistance, the potential of natural product-derived compounds in MDR reversal, namely natural flavonoid and terpenoids, and the effect of the introduction of nitrogen-containing groups are provided. The main modifications that have been performed during last few years to generate flavonoid and terpenoid derivatives, bearing nitrogen moieties, such as aliphatic, aromatic and heterocycle amine, amide, and related functional groups, as well as their P-gp, MRP1 and BCRP inhibitory activities are reviewed and discussed.
Insights
Semisynthetic nitrogen-containing flavonoids and terpenoids show promise in reversing multidrug resistance (MDR) by modulating ATP-binding cassette (ABC) transporters like P-glycoprotein (P-gp). These compounds offer a potential strategy to improve chemotherapy effectiveness.
Area of Science:
- Medicinal Chemistry
- Pharmacology
- Natural Products
Background:
- Multidrug resistance (MDR) significantly limits chemotherapy efficacy in cancer treatment.
- Overexpression of ATP-binding cassette (ABC) transporters, including P-glycoprotein (P-gp), breast cancer resistance protein (BCRP), and multidrug resistance protein 1 (MRP1), is a primary mechanism driving MDR.
- Natural product-derived compounds, particularly flavonoids and terpenoids, are explored for their potential to modulate these efflux pumps.
Purpose of the Study:
- To review the potential of semisynthetic nitrogen-containing flavonoid and terpenoid derivatives as modulators of ABC transporters.
- To highlight the role of nitrogen-bearing moieties in influencing the modulation of ABC transporter efflux function.
- To discuss the development of effective MDR reversers based on these modified natural products.
Main Methods:
- Review of recent literature on semisynthetic modifications of flavonoids and terpenoids.
- Focus on the introduction of nitrogen-containing functional groups (aliphatic, aromatic, heterocyclic amines, amides).
- Analysis of the reported inhibitory activities of these derivatives against P-gp, MRP1, and BCRP.
Main Results:
- Nitrogen-containing moieties on flavonoid and terpenoid scaffolds can significantly influence their activity as ABC transporter modulators.
- Various semisynthetic derivatives have demonstrated inhibitory effects on key MDR efflux pumps.
- These modifications represent a promising strategy for overcoming chemotherapy resistance.
Conclusions:
- Semisynthetic nitrogen-containing flavonoids and terpenoids are valuable candidates for developing novel MDR reversal agents.
- Targeting ABC transporters with these modified natural products offers a viable approach to enhance cancer chemotherapy outcomes.
- Further research into these derivatives could lead to more effective cancer treatment strategies.
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