alexa Rapid Identification Of Natural Hypouricemic Compounds From Alfalfa Extract Using UPLC-MS/MS Coupled With Molecular Docking | 70279
ISSN: 2329-6836

Natural Products Chemistry & Research
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5th International Conference and Exhibition on Pharmacognosy, Phytochemistry & Natural Products

Su-Jung Hsu, Shu-Mei Lin and Ching-Kuo Lee
National Chiayi University, Taiwan
Taipei Medical University, Taiwan
Posters & Accepted Abstracts: Nat Prod Chem Res
DOI: 10.4172/2329-6836-C1-017
Abstract
Xanthine Oxidase (XO) is a key enzyme that catalyzes the oxidation of xanthine and hypoxanthine to the end product (uric acid) in purine metabolism and is the major target enzyme for the hyperuricemia treatment and gout arthritis prevention. For the past five decades, allopurinol is the only available XO inhibitor for hyperuricemia treatment. It is of great interest to search for other natural XO inhibitors. Recent pharmacological studies demonstrated that alfalfa extract exhibits a variety of bioactivities, including neuroprotective, hypocholesterolemic, antioxidant, antiulcer, antimicrobial, hypolipidemic and estrogenic activity. It has been shown to be effective for treating atherosclerosis, heart disease, stroke, cancer, diabetes and menopausal symptoms. The aims of our study were to investigate the XO inhibiting potential and to identify the corresponding active components in alfalfa extract. The alfalfa extract was first combined with xanthine oxidase before applying to UPLC-ESI-QTOF-MS/MS for fingerprint analysis and structure identification of active compounds. The potential XO inhibitors from alfalfa extract were identified, including tricin and chrysoeriol. The XO inhibition and antioxidant activities of these compounds were further predicted using molecular docking software. The results revealed that tricin showed the lowest inhibition constant value (Ki) which means that this compound was predicted as the strongest inhibitor of XO. The method established in this study, LC-MS technique combined with Molecular Docking, might be also applied to rapid identification of anti-oxidative compounds and enzyme inhibiting agents from other natural resources in addition to alfalfa.
Biography

Su-Jung Hsu is currently a PhD student at the Department of Food Science, National Chiayi University, Taiwan. Her Doctoral research is focused on nutraceutical properties of alfalfa, including bioactive components purification, structure identification and bio-function evaluation. She acquires expertise in purification and chemical structure identification of natural products. She has purified and identified numbers of biologically functional components, especially compounds possessing tyrosinase and xanthine oxidase inhibition activity, from a variety of natural resources. She also conducted studies to investigate bioavailability of the active compounds from alfalfa extract. Her recent research interest is to study metabolomics of alfalfa extract, using in vitro cell co-culture model comprising enterocytes and hepatocytes in tandem with UPLC-ESI-QTOF-MS/MS technology.

Email: [email protected]

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