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多酚 ›› 2022, Vol. 4 ›› Issue (1): 55-63.
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摘要： Abstract Urate acid transporter 1 (URAT1) is the main transporter of uric acid reabsorption, which closely related to the pathogenesis of hyperuricemia. Screening URAT1 inhibitors and studying their possible metabolic processes is a hot spot in the development of uric acid-lowering drugs. Studies have shown that many food-borne plant polyphenols have uric acid lowering activity with non-toxic side eff ects, and can be used to improve and alleviate hyperuricemia. In this study, we take galangin (GAL) as an example to explore the mechanism of plant polyphenols affecting hyperuricemia by inhibiting URAT1. Homology modeling was used to construct a three-dimensional model of URAT1 protein, and the structure was optimized. Ramachandran diagram was used to verify the rationality of model protein structure. A known URAT1 inhibitor, benzbromarone (BBR), was used to dock with URAT1 to determine the docking site and show the key amino acids. GAL and model protein were docked by molecular docking method to analyze their interaction. Meanwhile, comparing the interaction of BBR and GAL with the key amino acids of model proteins, the binding of GAL was more stable, suggesting that GAL could aff ects hyperuricemia by inhibiting URAT1. This paper aims to provide theoretical guidance for the development of new functional food ingredients for lowering uric acid.
