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Published on: August 5, 2021
Functional Food-Derived Urolithins: Molecular Mechanisms, Health Effects, and Interactomics with Proteins and
Nevena Zelenović1, Milica Kojadinović2, Milica Popović3
1Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia.
None:
Over the past decade, research on urolithins has expanded significantly due to their role as mediators between polyphenol-rich diets and human health. Understanding the relationships between ellagitannin intake, gut microbiota composition, and urolithin production is essential for evaluating their biological effects and nutraceutical potential. The primary objective of this review is to critically summarise current knowledge on urolithins, bioactive metabolites derived from ellagitannins in plant-based foods, with a focus on their biosynthesis, bioavailability, protein interactions, and potential therapeutic applications. A comprehensive literature search was conducted using PubMed, Scopus, and Google Scholar to identify studies on urolithin biosynthesis, absorption, transport mechanisms, protein binding, and incorporation into extracellular vesicles. Relevant articles were critically analysed to synthesise current evidence and highlight emerging concepts. Key findings indicate that after absorption, urolithins bind to serum albumin, which facilitates their transport to target tissues, exerting anti-inflammatory and antioxidant actions. Recent evidence also shows that urolithins can be packaged into extracellular vesicles, suggesting novel mechanisms for intracellular transport and potential therapeutic applications. This review highlights gaps in current knowledge and proposes directions for future research to optimise their therapeutic potential.
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