Alleviation of Multidrug Resistance by Flavonoid and Non-Flavonoid Compounds in Breast, Lung, Colorectal and Prostate...

Area of Science:

• Oncology
• Pharmacology
• Natural Products Chemistry

Background:

• Multidrug resistance (MDR) is a significant challenge in solid cancer treatment, leading to therapeutic failure and metastasis.
• Mechanisms of MDR are complex, involving drug efflux, inactivation, altered targets, and cellular processes like cancer stem cell involvement and epithelial-mesenchymal transition.
• Synthetic MDR agents have shown limited clinical benefit, prompting research into natural compounds.

Purpose of the Study:

• To review the role of plant polyphenols in overcoming multidrug resistance in breast, colorectal, lung, and prostate cancers.
• To explore the chemopreventive and MDR-modulating properties of various phenolic compounds.
• To highlight the potential of natural compounds as adjuncts in cancer therapy.

Main Methods:

• Literature review of preclinical and clinical studies on plant polyphenols and cancer multidrug resistance.
• Analysis of mechanisms by which polyphenols counteract MDR pathways.
• Synthesis of information on the efficacy of specific phenolic compounds like flavones, curcumin, and ellagitannins.

Main Results:

• Plant polyphenols exhibit antioxidant, anti-proliferative, anti-angiogenic, and anti-metastatic effects.
• Phenolic compounds modulate key pathways involved in MDR, including drug efflux pumps and cell death inhibition.
• Studies indicate that polyphenols can prevent or reverse MDR in various cancer types.

Conclusions:

• Plant polyphenols represent a promising strategy for overcoming multidrug resistance in solid tumors.
• Further research is essential to elucidate the full potential and optimize the clinical application of phenolic compounds in cancer therapy.
• Natural compounds offer a viable avenue for developing novel approaches to combat cancer treatment failure due to multidrug resistance.