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The Redox Properties of Polyphenols and Their Role in ROS Generation for Biomedical Applications
Jose Bolaños-Cardet1,2, Belén Pepió-Tárrega1, Javier Saiz-Poseu1
1Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, 08193, Spain.
Abstract:
Polyphenols, particularly catechols, represent a significant class of compounds characterized by their versatile physicochemical and biological properties, sourced from both natural origins and industrial by-products. This review highlights their critical redox properties, which enable both antioxidant activity and controlled reactive oxygen species (ROS) generation. These dual capacities underpin their diverse biomedical applications, including the development of materials like nanoparticles, hydrogels, bioadhesives, coatings, and membranes. The review explores their utility in areas such as antimicrobial strategies, advanced cancer therapy, and tissue regeneration, demonstrating how their ROS modulation drives therapeutic effects. Despite promising preclinical studies, significant challenges persist in clinical translation, encompassing pharmacokinetics, biosafety, regulatory pathways, and manufacturing consistency. Future perspectives emphasize the crucial need for deeper understanding and precise control of ROS dynamics, advanced delivery systems, rational material design, and the integration of artificial intelligence (AI) to accelerate research and clinical validation. This comprehensive review synthesizes the current state, challenges, and future directions for polyphenol-based biomedical materials.
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