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Di Petrillo A, Siguri C, Delogu GL, Fais A, Era B, Floris S, Pintus F, Kumar A, Fantini MC, Olla S. Exploring Asphodelus microcarpus as a source of xanthine oxidase inhibitors: Insights from in silico and in vitro studies. Chem Biol Interact 2024; 397:111087. [PMID: 38823536 DOI: 10.1016/j.cbi.2024.111087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/19/2024] [Accepted: 05/29/2024] [Indexed: 06/03/2024]
Abstract
Xanthine oxidase (XO) plays a critical role in purine catabolism, catalyzing the conversion of hypoxanthine to xanthine and xanthine to uric acid, contributing to superoxide anion production. This process is implicated in various human diseases, particularly gout. Traditional XO inhibitors, such as allopurinol and febuxostat, while effective, may present side effects. Our study focuses on Asphodelus microcarpus, a plant renowned for traditional anti-inflammatory uses. Recent investigations into its phenolic-rich flowers, notably abundant in luteolin derivatives, reveal its potential as a natural source of XO inhibitors. In the present research, XO inhibition by an ethanolic flowers extract from A. microcarpus is reported. In silico docking studies have highlighted luteolin derivatives as potential XO inhibitors, and molecular dynamics support that luteolin 7-O-glucoside has the highest binding stability compared to other compounds and controls. In vitro studies confirm that luteolin 7-O-glucoside inhibits XO more effectively than the standard inhibitor allopurinol, with an IC50 value of 4.8 μg/mL compared to 11.5 μg/mL, respectively. These findings underscore the potential therapeutic significance of A. microcarpus in managing conditions related to XO activity. The research contributes valuable insights into the health-promoting properties of A. microcarpus and its potential application in natural medicine, presenting a promising avenue for further exploration in disease management.
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Affiliation(s)
- Amalia Di Petrillo
- Department of Medical Sciences and Public Health, University of Cagliari, 09042, Monserrato, Italy.
| | - Chiara Siguri
- Institute for Genetic and Biomedical Research (IRGB), The National Research Council (CNR), 09042, Monserrato, Italy
| | - Giovanna L Delogu
- Department of Life and Environmental Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Antonella Fais
- Department of Life and Environmental Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Benedetta Era
- Department of Life and Environmental Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Sonia Floris
- Department of Life and Environmental Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Francesca Pintus
- Department of Life and Environmental Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Amit Kumar
- Department of Electrical and Electronic Engineering, University of Cagliari, Via Marengo 2, 09123, Cagliari, Italy
| | - Massimo Claudio Fantini
- Department of Medical Sciences and Public Health, University of Cagliari, 09042, Monserrato, Italy
| | - Stefania Olla
- Institute for Genetic and Biomedical Research (IRGB), The National Research Council (CNR), 09042, Monserrato, Italy
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2
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Wang K, Cui H, Liu K, He Q, Fu X, Li W, Han W. Exploring the anti-gout potential of sunflower receptacles alkaloids: A computational and pharmacological analysis. Comput Biol Med 2024; 172:108252. [PMID: 38493604 DOI: 10.1016/j.compbiomed.2024.108252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/19/2024] [Accepted: 03/06/2024] [Indexed: 03/19/2024]
Abstract
Gout, a painful condition marked by elevated uric acid levels often linked to the diet's high purine and alcohol content, finds a potential treatment target in xanthine oxidase (XO), a crucial enzyme for uric acid production. This study explores the therapeutic properties of alkaloids extracted from sunflower (Helianthus annuus L.) receptacles against gout. By leveraging computational chemistry and introducing a novel R-based clustering algorithm, "TriDimensional Hierarchical Fingerprint Clustering with Tanimoto Representative Selection (3DHFC-TRS)," we assessed 231 alkaloid molecules from sunflower receptacles. Our clustering analysis pinpointed six alkaloids with significant gout-targeting potential, particularly emphasizing the fifth cluster's XO inhibition capabilities. Through molecular docking and the BatchDTA prediction model, we identified three top compounds-2-naphthylalanine, medroxalol, and fenspiride-with the highest XO affinity. Further molecular dynamics simulations assessed their enzyme active site interactions and binding free energies, employing MM-PBSA calculations. This investigation not only highlights the discovery of promising compounds within sunflower receptacle alkaloids via LC-MS but also introduces medroxalol as a novel gout treatment candidate, showcasing the synergy of computational techniques and LC-MS in drug discovery.
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Affiliation(s)
- Kaiyu Wang
- Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Changchun, 130012, Qianjin road 2699, China
| | - Huizi Cui
- Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Changchun, 130012, Qianjin road 2699, China
| | - Kaifeng Liu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, 130012, Qianjin road 2699, China
| | - Qizheng He
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, 130012, Qianjin road 2699, China
| | - Xueqi Fu
- Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Changchun, 130012, Qianjin road 2699, China
| | - Wannan Li
- Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Changchun, 130012, Qianjin road 2699, China.
| | - Weiwei Han
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, 130012, Qianjin road 2699, China.
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3
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Altunayar-Unsalan C, Unsalan O. Molecular Structure, Antioxidant Potential, and Pharmacokinetic Properties of Plant Flavonoid Blumeatin and Investigating Its Inhibition Mechanism on Xanthine Oxidase for Hyperuricemia by Molecular Modeling. ACS OMEGA 2024; 9:13284-13297. [PMID: 38524493 PMCID: PMC10956095 DOI: 10.1021/acsomega.3c10083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/22/2024] [Accepted: 02/27/2024] [Indexed: 03/26/2024]
Abstract
Hyperuricemia, which usually results in metabolic syndrome symptoms, is increasing rapidly all over the world and becoming a global public health issue. Xanthine oxidase (XO) is regarded as a key drug target for the treatment of this disease. Therefore, finding natural, nontoxic, and highly active XO inhibitors is quite important. To get insights into inhibitory potential toward XO and determine antioxidant action mechanism depending on the molecular structure, plant flavonoid blumeatin was investigated for the first time by Fourier transform infrared (FTIR) spectroscopy, density functional theory (DFT), ADME/Tox (absorption, distribution, metabolism, excretion, and toxicity) analysis, and molecular docking study. Theoretical findings indicated that blumeatin has high radical scavenging activity due to its noncoplanarity and over twisted torsion angle (-94.64°) with respect to its flavanone skeleton could explain that there might be a correlation between antioxidant activity and planarity of blumeatin. Based on the ADME/Tox analysis, it is determined that blumeatin has a high absorption profile in the human intestine (81.93%), and this plant flavonoid is not carcinogenic or mutagenic. A molecular docking study showed that Thr1010, Val1011, Phe914, and Ala1078 are the main amino acid residues participating in XO's interaction with blumeatin via hydrogen bonds.
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Affiliation(s)
- Cisem Altunayar-Unsalan
- Graduate
School of Natural and Applied Sciences, Ege University, 35100 Bornova, Izmir, Turkey
- Central
Research Testing and Analysis Laboratory Research and Application
Center, Ege University, 35100 Bornova, Izmir, Turkey
| | - Ozan Unsalan
- Department
of Physics, Faculty of Science, Ege University, 35100 Bornova, Izmir, Turkey
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4
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Yu D, Du J, He P, Wang N, Li L, Liu Y, Yang C, Xu H, Li Y. Identification of natural xanthine oxidase inhibitors: Virtual screening, anti-xanthine oxidase activity, and interaction mechanism. Int J Biol Macromol 2024; 259:129286. [PMID: 38216015 DOI: 10.1016/j.ijbiomac.2024.129286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/14/2024]
Abstract
Xanthine oxidase (XO) is a crucial target for hyperuricemia treatment(s). Naturally occurred XO inhibitors with minimal toxicity and high efficacy have attracted researchers' attention. With the goal of quickly identifying natural XO inhibitors, an integrated computational screening strategy was constructed by molecular docking and calculating the free energy of binding. Twenty-seven hits were achieved from a database containing 19,377 natural molecules. This includes fourteen known XO inhibitors and four firstly-reported inhibitors (isolicoflavonol, 5,7-dihydroxycoumarin, parvifolol D and clauszoline M, IC50 < 40 μM). Iolicoflavonol (hit 8, IC50 = 8.45 ± 0.68 μM) and 5,7-dihydroxycoumarin (hit 25, IC50 = 10.91 ± 0.71 μM) displayed the great potency as mixed-type inhibitors. Docking study and molecular dynamics simulation revealed that both hits could interact with XO's primarily active site residues ARG880, MOS1328, and ASN768 of XO. Fluorescence spectroscopy studies showed that hit 8 bound to the active cavity region of XO, causing changes in XO's conformation and hydrophobicity. Hits 8 and 25 exhibit favorable Absorption, Distribution, Metabolism, and Excretion (ADME) properties. Additionally, no cytotoxicity against human liver cells was observed at their median inhibition concentrations against XO. Therefore, the present study offers isolicoflavonol and 5,7-dihydroxycoumarin with the potential to be disease-modifying agents for hyperuricemia.
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Affiliation(s)
- Dehong Yu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Jiana Du
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Pei He
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Na Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Lizi Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yi Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Can Yang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Haiqi Xu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Yanfang Li
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
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5
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Vincenzi M, Mercurio FA, Leone M. Virtual Screening of Peptide Libraries: The Search for Peptide-Based Therapeutics Using Computational Tools. Int J Mol Sci 2024; 25:1798. [PMID: 38339078 PMCID: PMC10855943 DOI: 10.3390/ijms25031798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/26/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
Over the last few decades, we have witnessed growing interest from both academic and industrial laboratories in peptides as possible therapeutics. Bioactive peptides have a high potential to treat various diseases with specificity and biological safety. Compared to small molecules, peptides represent better candidates as inhibitors (or general modulators) of key protein-protein interactions. In fact, undruggable proteins containing large and smooth surfaces can be more easily targeted with the conformational plasticity of peptides. The discovery of bioactive peptides, working against disease-relevant protein targets, generally requires the high-throughput screening of large libraries, and in silico approaches are highly exploited for their low-cost incidence and efficiency. The present review reports on the potential challenges linked to the employment of peptides as therapeutics and describes computational approaches, mainly structure-based virtual screening (SBVS), to support the identification of novel peptides for therapeutic implementations. Cutting-edge SBVS strategies are reviewed along with examples of applications focused on diverse classes of bioactive peptides (i.e., anticancer, antimicrobial/antiviral peptides, peptides blocking amyloid fiber formation).
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Affiliation(s)
| | | | - Marilisa Leone
- Institute of Biostructures and Bioimaging, Via Pietro Castellino 111, 80131 Naples, Italy; (M.V.); (F.A.M.)
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6
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Li L, Zhang C, Zhang Y, Chen S, Shan S, Wu T, Niu Y, Xu Y. Single substrate-functionalized molybdenum oxide nanozyme for specific colorimetric monitoring of xanthine oxidase activity. Mikrochim Acta 2024; 191:99. [PMID: 38228947 DOI: 10.1007/s00604-023-06149-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/11/2023] [Indexed: 01/18/2024]
Abstract
Xanthine-functionalized molybdenum oxide nanodots (X-MoO3-x NDs) with peroxidase (POD)-like activity were developed for selective, sensitive, and facile colorimetric quantification of xanthine oxidase (XO). Xanthine functionalization can not only be favorable for the successful nanozyme preparation, but also for the specific recognition of XO as well as the simultaneous generation of hydrogen peroxide, which was subsequently transformed into hydroxyl radical to oxidize the chromogenic reagent based on the POD-like catalysis. Under the optimized conditions, the colorimetric biosensing platform was established for XO assay without addition of further substrates, showing good linearity relationship between absorbance difference (ΔA) and XO concentrations in the range 0.05-0.5 U/mL (R2 = 0.998) with a limit of detection (LOD) of 0.019 U/mL. The quantification of XO occurs in 25 min, which is superior to the previously reported and commercial XO assays. The proposed method has been successfully used in the assay of human serum samples, showing its high potential in the field of clinical monitoring.
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Affiliation(s)
- Limin Li
- Institute of Biomedical Engineering, College of Life Sciences, School of Tourism and Geography Sciences, Qingdao University, Qingdao, 266071, China
| | - Cai Zhang
- Institute of Biomedical Engineering, College of Life Sciences, School of Tourism and Geography Sciences, Qingdao University, Qingdao, 266071, China
| | - Yifan Zhang
- The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Shengnan Chen
- Children's Hospital Capital Institute of Pediatrics, Beijing, 100020, China
| | - Shuo Shan
- The Second Affiliated Hospital of Hainan Medical University, Haikou, 570311, China
| | - Tianming Wu
- Institute of Biomedical Engineering, College of Life Sciences, School of Tourism and Geography Sciences, Qingdao University, Qingdao, 266071, China
| | - Yusheng Niu
- Institute of Biomedical Engineering, College of Life Sciences, School of Tourism and Geography Sciences, Qingdao University, Qingdao, 266071, China.
| | - Yuanhong Xu
- Institute of Biomedical Engineering, College of Life Sciences, School of Tourism and Geography Sciences, Qingdao University, Qingdao, 266071, China.
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7
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Williamson G, Clifford MN. A critical examination of human data for the biological activity of quercetin and its phase-2 conjugates. Crit Rev Food Sci Nutr 2024:1-37. [PMID: 38189312 DOI: 10.1080/10408398.2023.2299329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
This critical review examines evidence for beneficial effects of quercetin phase-2 conjugates from clinical intervention studies, volunteer feeding trials, and in vitro work. Plasma concentrations of quercetin-3-O-glucuronide (Q3G) and 3'-methylquercetin-3-O-glucuronide (3'MQ3G) after supplementation may produce beneficial effects in macrophages and endothelial cells, respectively, especially if endogenous deglucuronidation occurs, and lower blood uric acid concentration via quercetin-3'-O-sulfate (Q3'S). Unsupplemented diets produce much lower concentrations (<50 nmol/l) rarely investigated in vitro. At 10 nmol/l, Q3'S and Q3G stimulate or suppress, respectively, angiogenesis in endothelial cells. Statistically significant effects have been reported at 100 nmol/l in breast cancer cells (Q3G), primary neuron cultures (Q3G), lymphocytes (Q3G and3'MQ3G) and HUVECs (QG/QS mixture), but it is unclear whether these translate to a health benefit in vivo. More sensitive and more precise methods to measure clinically significant endpoints are required before a conclusion can be drawn regarding effects at normal dietary concentrations. Future requirements include better understanding of inter-individual and temporal variation in plasma quercetin phase-2 conjugates, their mechanisms of action including deglucuronidation and desulfation both in vitro and in vivo, tissue accumulation and washout, as well as potential for synergy or antagonism with other quercetin metabolites and metabolites of other dietary phytochemicals.
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Affiliation(s)
- Gary Williamson
- Department of Nutrition, Dietetics and Food, Faculty of Medicine Nursing and Health Sciences, Monash University, Notting Hill, VIC, Australia
| | - Michael N Clifford
- Department of Nutrition, Dietetics and Food, Faculty of Medicine Nursing and Health Sciences, Monash University, Notting Hill, VIC, Australia
- School of Bioscience and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, UK
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8
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He Y, Liu K, Cao F, Song R, Liu J, Zhang Y, Li W, Han W. Using deep learning and molecular dynamics simulations to unravel the regulation mechanism of peptides as noncompetitive inhibitor of xanthine oxidase. Sci Rep 2024; 14:174. [PMID: 38168773 PMCID: PMC10761953 DOI: 10.1038/s41598-023-50686-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024] Open
Abstract
Xanthine oxidase (XO) is a crucial enzyme in the development of hyperuricemia and gout. This study focuses on LWM and ALPM, two food-derived inhibitors of XO. We used molecular docking to obtain three systems and then conducted 200 ns molecular dynamics simulations for the Apo, LWM, and ALPM systems. The results reveal a stronger binding affinity of the LWM peptide to XO, potentially due to increased hydrogen bond formation. Notable changes were observed in the XO tunnel upon inhibitor binding, particularly with LWM, which showed a thinner, longer, and more twisted configuration compared to ALPM. The study highlights the importance of residue F914 in the allosteric pathway. Methodologically, we utilized the perturbed response scan (PRS) based on Python, enhancing tools for MD analysis. These findings deepen our understanding of food-derived anti-XO inhibitors and could inform the development of food-based therapeutics for reducing uric acid levels with minimal side effects.
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Affiliation(s)
- Yi He
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Qianjin Road 2699, Changchun, 130012, China
| | - Kaifeng Liu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Qianjin Road 2699, Changchun, 130012, China
| | - Fuyan Cao
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Qianjin Road 2699, Changchun, 130012, China
| | - Renxiu Song
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Qianjin Road 2699, Changchun, 130012, China
| | - Jianxuan Liu
- Jilin Academy of Chinese Medicine Sciences, Chuangju Road 155, Changchun, 130012, China
| | - Yinghua Zhang
- Jilin Academy of Chinese Medicine Sciences, Chuangju Road 155, Changchun, 130012, China.
| | - Wannan Li
- Edmond H. Fischer Signal Transduction Laboratory, School of Life Sciences, Jilin University, Qianjin Road 2699, Changchun, 130012, China.
| | - Weiwei Han
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Qianjin Road 2699, Changchun, 130012, China.
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9
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Lv X, Wang X, Wang X, Han Y, Chen H, Hao Y, Zhang H, Cui C, Gao Q, Zheng Z. Research progress in arthritis treatment with the active components of Herba siegesbeckiae. Biomed Pharmacother 2023; 169:115939. [PMID: 38007937 DOI: 10.1016/j.biopha.2023.115939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 11/18/2023] [Accepted: 11/21/2023] [Indexed: 11/28/2023] Open
Abstract
Arthritis is a group of diseases characterized by joint pain, swelling, stiffness, and limited movement. Osteoarthritis, rheumatoid arthritis, and gouty arthritis are the most common types of arthritis. Arthritis severely affects the quality of life of patients and imposes a heavy financial and medical burden on their families and society at large. As a widely used traditional Chinese medicine, Herba siegesbeckiae has many pharmacological effects such as anti-inflammatory and analgesic, anti-ischemic injury, cardiovascular protection, and hypoglycemic. In addition, it has significant therapeutic effects on arthritis. The rich chemical compositions of H. siegesbeckiae primarily include diterpenoids, sesquiterpenoids, and flavonoids. As one of the main active components of H. siegesbeckiae, kirenol and quercetin play a vital role in reducing arthritis symptoms. In the present study, the research progress in arthritis treatment with the active components of H. siegesbeckiae is reviewed.
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Affiliation(s)
- Xiaoqian Lv
- Binzhou Medical University, 264003 Yantai, China
| | - Xiaoyu Wang
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Xuelei Wang
- Binzhou Medical University, 264003 Yantai, China
| | - Yunna Han
- Binzhou Medical University, 264003 Yantai, China
| | - Haoyue Chen
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Yuwen Hao
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Hao Zhang
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Chao Cui
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China
| | - Qiang Gao
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China.
| | - Zuncheng Zheng
- The Affiliated Taian City Central Hospital of Qingdao University, 271000 Taian, China.
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Yang YS, Wang B, Liu J, Li Q, Jiao QC, Qin P. Discovery of coumaric acid derivatives hinted by coastal marine source to seek for uric acid lowering agents. J Enzyme Inhib Med Chem 2023; 38:2163241. [PMID: 36629443 PMCID: PMC9848256 DOI: 10.1080/14756366.2022.2163241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
In this work, a series of novel compounds Spartinin C1-C24 were screened, synthesised and evaluated for inhibiting xanthine oxidase thus lowering serum uric acid level. The backbones were derived from the components of coastal marine source Spartina alterniflora and marketed drugs. The top hits Spartinin C10 & C22 suggested high inhibition percentages (78.54 and 93.74) at 10 μM dosage, which were higher than the positive control Allopurinol. They were low cytotoxic onto human normal hepatocyte cells. Treatment with Spartinin C10 could lower the serum uric acid level to 440.0 μM in the hyperuricemic model mice (723.0 μM), comparable with Allopurinol (325.8 μM). Spartinin C10 was more appreciated than Allopurinol on other serum indexes. The preliminary pharmacokinetics evaluation indicated that the rapid absorption, metabolism and elimination of Spartinin C10 should be further improved. The discovery of pharmaceutical molecules from coastal marine source here might inspire the inter-disciplinary investigations on public health.
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Affiliation(s)
- Yu-Shun Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China,Research and Development Center, Nanjing Shibeitai Biotechnology Co., Ltd., Nanjing, China,Yu-Shun Yang State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Bin Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Junzhong Liu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Qin Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Qin-Cai Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China,CONTACT Qin-Cai Jiao
| | - Pei Qin
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China,Research and Development Center, Nanjing Shibeitai Biotechnology Co., Ltd., Nanjing, China,Pei Qin
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11
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Olla S, Siguri C, Fais A, Era B, Fantini MC, Di Petrillo A. Inhibitory Effect of Quercetin on Oxidative Endogen Enzymes: A Focus on Putative Binding Modes. Int J Mol Sci 2023; 24:15391. [PMID: 37895071 PMCID: PMC10607112 DOI: 10.3390/ijms242015391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Oxidative stress is defined as an imbalance between the production of free radicals and reactive oxygen species (ROS) and the ability of the body to neutralize them by anti-oxidant defense systems. Cells can produce ROS during physiological processes, but excessive ROS can lead to non-specific and irreversible damage to biological molecules, such as DNA, lipids, and proteins. Mitochondria mainly produce endogenous ROS during both physiological and pathological conditions. Enzymes like nicotinamide adenine dinucleotide phosphate oxidase (NOX), xanthine oxidase (XO), lipoxygenase (LOX), myeloperoxidase (MPO), and monoamine oxidase (MAO) contribute to this process. The body has enzymatic and non-enzymatic defense systems to neutralize ROS. The intake of bioactive phenols, like quercetin (Que), can protect against pro-oxidative damage by quenching ROS through a non-enzymatic system. In this study, we evaluate the ability of Que to target endogenous oxidant enzymes involved in ROS production and explore the mechanisms of action underlying its anti-oxidant properties. Que can act as a free radical scavenger by donating electrons through the negative charges in its phenolic and ketone groups. Additionally, it can effectively inhibit the activity of several endogenous oxidative enzymes by binding them with high affinity and specificity. Que had the best molecular docking results with XO, followed by MAO-A, 5-LOX, NOX, and MPO. Que's binding to these enzymes was confirmed by subsequent molecular dynamics, revealing different stability phases depending on the enzyme bound. The 500 ns simulation showed a net evolution of binding for NOX and MPO. These findings suggest that Que has potential as a natural therapy for diseases related to oxidative stress.
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Affiliation(s)
- Stefania Olla
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy;
| | - Chiara Siguri
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche, Cittadella Universitaria di Monserrato, 09042 Monserrato, Italy;
| | - Antonella Fais
- Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Italy; (A.F.); (B.E.)
| | - Benedetta Era
- Department of Life and Environmental Sciences, University of Cagliari, 09042 Monserrato, Italy; (A.F.); (B.E.)
| | - Massimo Claudio Fantini
- Department of Medical Science and Public Health, University of Cagliari, 09042 Monserrato, Italy;
| | - Amalia Di Petrillo
- Department of Medical Science and Public Health, University of Cagliari, 09042 Monserrato, Italy;
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Boulebd H, Spiegel M. Computational assessment of the primary and secondary antioxidant potential of alkylresorcinols in physiological media. RSC Adv 2023; 13:29463-29476. [PMID: 37818267 PMCID: PMC10561184 DOI: 10.1039/d3ra05967g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 09/29/2023] [Indexed: 10/12/2023] Open
Abstract
Alkylresorcinols are a group of natural phenolic compounds found in various foods such as whole grain cereals, bread, and certain fruits. They are known for their beneficial health effects, such as anti-inflammatory and anti-cancer properties. This study aimed to evaluate the antioxidant activity of two typical alkylresorcinols namely olivetol and olivetolic acid (Oli and OliA) under physiological conditions. The free radical scavenging capacity of Oli and OliA toward oxygenated free radicals (HO˙ and HOO˙ radicals) was investigated using thermodynamic and kinetic calculations. The results revealed that Oli and OliA are potent scavengers of HO˙ radical in both polar and lipid media, acting exclusively via the FHT (formal hydrogen transfer) mechanism. Moreover, they demonstrated excellent scavenging activity toward HOO˙ radical in water via the SET (single electron transfer) mechanism, outperforming the common antioxidant BHT. In lipid media, Oli and OliA showed moderate scavenging activity toward HOO˙ radical via the FHT mechanism. Significant prooxidant potential of OliA- was also demonstrated through the formation of complexes with copper ions. Additionally, docking studies indicate that the compounds exhibited a good affinity for ROS-producing enzymes, including myeloperoxidase (MP), cytochrome P450 (CP450), lipoxygenase (LOX), and xanthine oxidase (XO), highlighting their potential as natural antioxidants with promising therapeutic applications.
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Affiliation(s)
- Houssem Boulebd
- Department of Chemistry, Faculty of Exact Science, University of Constantine 1 Constantine 25000 Algeria
| | - Maciej Spiegel
- Department of Pharmacognosy and Herbal Medicines, Faculty of Pharmacy, Wroclaw Medical University Borowska 211A 50-556 Wroclaw Poland
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Boulebd H, Carmena-Bargueño M, Pérez-Sánchez H. Exploring the Antioxidant Properties of Caffeoylquinic and Feruloylquinic Acids: A Computational Study on Hydroperoxyl Radical Scavenging and Xanthine Oxidase Inhibition. Antioxidants (Basel) 2023; 12:1669. [PMID: 37759973 PMCID: PMC10526077 DOI: 10.3390/antiox12091669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/04/2023] [Accepted: 08/11/2023] [Indexed: 09/29/2023] Open
Abstract
Caffeoylquinic (5-CQA) and feruloylquinic (5-FQA) acids, found in coffee and other plant sources, are known to exhibit diverse biological activities, including potential antioxidant effects. However, the underlying mechanisms of these phenolic compounds remain elusive. This paper investigates the capacity and mode of action of 5-CQA and 5-FQA as natural antioxidants acting as hydroperoxyl radical scavengers and xanthine oxidase (XO) inhibitors. The hydroperoxyl radical scavenging potential was investigated using thermodynamic and kinetic calculations based on the DFT method, taking into account the influence of physiological conditions. Blind docking and molecular dynamics simulations were used to investigate the inhibition capacity toward the XO enzyme. The results showed that 5-CQA and 5-FQA exhibit potent hydroperoxyl radical scavenging capacity in both polar and lipidic physiological media, with rate constants higher than those of common antioxidants, such as Trolox and BHT. 5-CQA carrying catechol moiety was found to be more potent than 5-FQA in both physiological environments. Furthermore, both compounds show good affinity with the active site of the XO enzyme and form stable complexes. The hydrogen atom transfer (HAT) mechanism was found to be exclusive in lipid media, while both HAT and SET (single electron transfer) mechanisms are possible in water. 5-CQA and 5-FQA may, therefore, be considered potent natural antioxidants with potential health benefits.
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Affiliation(s)
- Houssem Boulebd
- Department of Chemistry, Faculty of Exact Science, University of Constantine 1, Constantine 25000, Algeria
| | - Miguel Carmena-Bargueño
- Structural Bioinformatics and High-Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), Campus de los Jerónimos 135, 30107 Guadalupe, Spain; (M.C.-B.); (H.P.-S.)
| | - Horacio Pérez-Sánchez
- Structural Bioinformatics and High-Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), Campus de los Jerónimos 135, 30107 Guadalupe, Spain; (M.C.-B.); (H.P.-S.)
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14
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Pei XD, Li F, Zhang YM, Huang XN, Yu FT, Su LY, Liu XL, Wang CH. Preparation, Purification, and Identification of Novel Feather Keratin-Derived Peptides with Antioxidative and Xanthine Oxidase Inhibitory Activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:8061-8070. [PMID: 37161263 DOI: 10.1021/acs.jafc.3c01131] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Feather keratin is an underappreciated protein resource of high quality, with limited bioavailability, and it urgently requires eco-friendly methods to enhance its value. Here, we report on the preparation, purification, and identification of novel peptides with antioxidant and xanthine oxidase (XOD) inhibitory activities from fermented feather broth, using Bacillus licheniformis 8-4. Two peptides, namely, DLCRPCGPTPLA (DA-12) and ANSCNEPCVR (AR-10), displayed remarkable 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging abilities with half-maximal inhibitory concentrations (IC50) values of 0.048, 0.034, and 0.95, 0.84 mg/mL, respectively. These values exceed those of the previously reported feather keratin-derived antioxidant peptides. Another peptide, GNQQVHLQSQDM (GM-12), demonstrated XOD activity inhibition, with an IC50 value of 12.15 mg/mL, and it quenched the fluorescence of XOD. Furthermore, after simulating gastrointestinal digestion, DA-12, AR-10, and GM-12 retained their biological activities. Meanwhile, DA-12 and GM-12 showed an unexpected synergistic inhibition on XOD activity accompanied by fluorescence quenching. This study provides new insights into the potential applications of feather keratin, including functionalized feed with antioxidative and antigout (anti-hyperuricemia) activities.
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Affiliation(s)
- Xiao-Dong Pei
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Fan Li
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Yan-Mei Zhang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Xiao-Ni Huang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Fu-Tian Yu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Lin-Ying Su
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Xiao-Ling Liu
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
| | - Cheng-Hua Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, People's Republic of China
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15
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Exploring the Potential of Black Soldier Fly Larval Proteins as Bioactive Peptide Sources through in Silico Gastrointestinal Proteolysis: A Cheminformatic Investigation. Catalysts 2023. [DOI: 10.3390/catal13030605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
Despite their potential as a protein source for human consumption, the health benefits of black soldier fly larvae (BSFL) proteins following human gastrointestinal (GI) digestion are poorly understood. This computational study explored the potential of BSFL proteins to release health-promoting peptides after human GI digestion. Twenty-six proteins were virtually proteolyzed with GI proteases. The resultant peptides were screened for high GI absorption and non-toxicity. Shortlisted peptides were searched against the BIOPEP-UWM and Scopus databases to identify their bioactivities. The potential of the peptides as inhibitors of myeloperoxidase (MPO), NADPH oxidase (NOX), and xanthine oxidase (XO), as well as a disruptor of Keap1–Nrf2 protein–protein interaction, were predicted using molecular docking and dynamics simulation. Our results revealed that about 95% of the 5218 fragments generated from the proteolysis of BSFL proteins came from muscle proteins. Dipeptides comprised the largest group (about 25%) of fragments arising from each muscular protein. Screening of 1994 di- and tripeptides using SwissADME and STopTox tools revealed 65 unique sequences with high GI absorption and non-toxicity. A search of the databases identified 16 antioxidant peptides, 14 anti-angiotensin-converting enzyme peptides, and 17 anti-dipeptidyl peptidase IV peptides among these sequences. Results from molecular docking and dynamic simulation suggest that the dipeptide DF has the potential to inhibit Keap1–Nrf2 interaction and interact with MPO within a short time frame, whereas the dipeptide TF shows promise as an XO inhibitor. BSFL peptides were likely weak NOX inhibitors. Our in silico results suggest that upon GI digestion, BSFL proteins may yield high-GI-absorbed and non-toxic peptides with potential health benefits. This study is the first to investigate the bioactivity of peptides liberated from BSFL proteins following human GI digestion. Our findings provide a basis for further investigations into the potential use of BSFL proteins as a functional food ingredient with significant health benefits.
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16
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Wen Y, Xu J, Pan D, Wang C. Removal of substrate inhibition of Acinetobacter baumannii xanthine oxidase by point mutation at Gln-201 enables efficient reduction of purine content in fish sauce. Food Chem X 2023; 17:100593. [PMID: 36845495 PMCID: PMC9944496 DOI: 10.1016/j.fochx.2023.100593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 02/02/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023] Open
Abstract
Xanthine oxidase is an oxidase that has a molybdopterin structure with substrate inhibition. Here, we show that a single point mutation (Q201) in the Acinetobacter baumannii xanthine oxidase (AbXOD) obtained mutant Q201E (k cat =799.44 s-1, no inhibition) with high enzyme activity and decrease of substrate inhibition in 5 mmol/L high substrate model, and which cause two loops structure change at active center, characterized by complete loss of substrate inhibition without reduction of enzymatic activity. Molecular docking results showed that the change of flexible loop increased the affinity between substrate and enzyme, and the formation of a π-π bond and two hydrogen bonds made the substrate more stable in the active center. Ultimately, Q201E can still maintain better enzyme activity under high purine content (an approximately 7-fold improvement over the wild-type), indicating a broader application prospect in the manufacture of low-purine food.
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Affiliation(s)
| | | | | | - Chenghua Wang
- Corresponding author at: College of Light Industry and Food Engineering, 100 Daxue East Road, Nanning 530004, People’s Republic of China.
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17
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Wee SP, Loh KE, Lam KW, Ismail IS. A Study of the Interaction between Xanthine Oxidase and Its Inhibitors from Chrysanthemum morifolium Using Computational Simulation and Multispectroscopic Methods. Metabolites 2023; 13:metabo13010113. [PMID: 36677038 PMCID: PMC9864848 DOI: 10.3390/metabo13010113] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/29/2022] [Accepted: 12/31/2022] [Indexed: 01/12/2023] Open
Abstract
The current therapeutic approach for gout is through the inhibition of the xanthine oxidase (XO) enzyme. Allopurinol, a clinically used XO inhibitor, causes many side effects. This study aimed to investigate the interaction between XO and inhibitors identified from Chrysanthemum morifolium by using computational simulation and multispectroscopic methods. The crude extract, petroleum ether, ethyl acetate (EtOAc), and residual fractions were subjected to an XO inhibitory assay and 1H NMR analysis. The EtOAc fraction was shown to be strongly correlated to the XO inhibitory activity by using PLS biplot regression analysis. Kaempferol, apigenin, homovanillic acid, and trans-cinnamic acid were suggested to contribute to the XO inhibitory activity. Molecular docking showed that kaempferol and apigenin bound to the active site of XO with their benzopyran moiety sandwiched between Phe914 and Phe1009, interacting with Thr1010 and Arg880 by hydrogen bonding. Kaempferol showed the lowest binding energy in molecular dynamic simulation. The residues that contributed to the binding energy were Glu802, Arg880, Phe 914, and Phe 1009. A fluorescence quenching study showed a combination of static and dynamic quenching for all four inhibitors binding to XO. Circular dichroism spectroscopy revealed that there was no major change in XO conformation after binding with each inhibitor.
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Affiliation(s)
- Sze Ping Wee
- Department of Bioscience, Faculty of Applied Sciences, Tunku Abdul Rahman University of Management and Technology, Jalan Genting Kelang, Setapak, Kuala Lumpur 53300, Federal Territory of Kuala Lumpur, Malaysia
| | - Khye Er Loh
- Department of Bioscience, Faculty of Applied Sciences, Tunku Abdul Rahman University of Management and Technology, Jalan Genting Kelang, Setapak, Kuala Lumpur 53300, Federal Territory of Kuala Lumpur, Malaysia
- Correspondence: ; Tel.: +60-3-41450123 (ext. 3171)
| | - Kok Wai Lam
- Centre for Drug and Herbal Development, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Federal Territory of Kuala Lumpur, Malaysia
| | - Intan Safinar Ismail
- Natural Medicine and Product Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia (UPM), Serdang 43400, Selangor, Malaysia
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18
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He P, Xu H, Yang C, Yu D, Liu Y, Du J, Li Y. Unveiling the inhibitory mechanism of aureusidin targeting xanthine oxidase by multi-spectroscopic methods and molecular simulations. RSC Adv 2023; 13:1606-1616. [PMID: 36688063 PMCID: PMC9827282 DOI: 10.1039/d2ra06997k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/27/2022] [Indexed: 01/10/2023] Open
Abstract
Xanthine oxidase (XO) is a key target for gout treatment. Great efforts have been made towards the discovery and development of new XO inhibitors. Aureusidin (AUR), a natural compound, emerges as the second reported XO inhibitor with an aurone skeleton with an IC50 value of 7.617 ± 0.401 μM in vitro. The inhibitory mechanism of AUR against XO was explored through enzyme kinetic studies, multi-spectroscopic methods, computer simulation techniques, and ADME prediction. The results showed that AUR acts as a rapid reversible and mixed-type XO inhibitor and its binding to XO was driven by hydrogen bonding and hydrophobic interaction. Moreover, AUR presented a strong fluorescence quenching effect through a static quenching process and induced a conformation change of XO. Its binding pattern with XO was revealed through molecular docking, and its affinity toward XO was enhanced through interactions with key amino acid residues in the active pocket of XO. Further, AUR demonstrated good stability and pharmacokinetic behavior properties in molecular dynamics simulation and ADME prediction. In short, the current work clarified in depth the inhibitory mechanism of AUR on XO firstly and then provided fresh insights into its further development as a natural potent XO inhibitor with aurone skeleton.
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Affiliation(s)
- Pei He
- School of Chemical Engineering, Sichuan UniversityChengdu610065China+86 28 8540 5220
| | - Haiqi Xu
- School of Chemical Engineering, Sichuan UniversityChengdu610065China+86 28 8540 5220
| | - Can Yang
- School of Chemical Engineering, Sichuan UniversityChengdu610065China+86 28 8540 5220
| | - Dehong Yu
- School of Chemical Engineering, Sichuan UniversityChengdu610065China+86 28 8540 5220
| | - Yi Liu
- School of Chemical Engineering, Sichuan UniversityChengdu610065China+86 28 8540 5220
| | - Jiana Du
- School of Chemical Engineering, Sichuan UniversityChengdu610065China+86 28 8540 5220
| | - Yanfang Li
- School of Chemical Engineering, Sichuan UniversityChengdu610065China+86 28 8540 5220
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Xie D, Shen Y, Su E, Du L, Xie J, Wei D. Anti-Hyperuricemic, Nephroprotective, and Gut Microbiota Regulative Effects of Separated Hydrolysate of α-Lactalbumin on Potassium Oxonate- and Hypoxanthine-Induced Hyperuricemic Mice. Mol Nutr Food Res 2023; 67:e2200162. [PMID: 36308034 DOI: 10.1002/mnfr.202200162] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 09/29/2022] [Indexed: 01/19/2023]
Abstract
SCOPE This study aims to investigate the anti-hyperuricemic and nephroprotective effects and the potential mechanisms of the separated gastrointestinal hydrolysates of α-lactalbumin on hyperuricemic mice. METHODS AND RESULTS The gastrointestinal hydrolysate of α-lactalbumin, the hydrolysate fraction with molecular weight (MW) < 3 kDa (LH-3k), and the fragments with smallest MW among LH-3K harvested through dextran gel chromatography (F5) are used. Hyperuricemia mice are induced via daily oral gavage of potassium oxonate and hypoxanthine. F5 displays the highest in vitro xanthine oxidase (XO) inhibition among all the fractions separated from LH-3k. Oral administration of F5 significantly reduces the levels of serum uric acid (UA), creatinine, and urea nitrogen. F5 treatment could ameliorate kidney injury through alleviating oxidative stress and inflammation. F5 alleviates hyperuricemia in mice by inhibiting hepatic XO activity and regulating the expression of renal urate transporters. Gut microbiota analysis illustrates that F5 administration increases the abundance of some SCFAs producers, and inhibits the growth of hyperuricemia and inflammation associated genera. LH-3k exhibits similar effects but does not show significance as those of the F5 fraction. CONCLUSION The anti-hyperuricemia and nephroprotective functions of F5 are mediated by inhibiting hepatic XO activity, ameliorating oxidative stress and inflammation, regulating renal urate transporters, and modulating the gut microbiota in hyperuricemic mice.
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Affiliation(s)
- Dewei Xie
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Yaling Shen
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Erzheng Su
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Lei Du
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, P. R. China
| | - Jingli Xie
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, P. R. China.,Shanghai Collaborative Innovation Center for Biomanufacturing (SCICB), Shanghai, 200237, P. R. China
| | - Dongzhi Wei
- State Key Laboratory of Bioreactor Engineering, Department of Food Science and Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, P. R. China.,Shanghai Collaborative Innovation Center for Biomanufacturing (SCICB), Shanghai, 200237, P. R. China
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Spiegel M, Sroka Z. Quantum-mechanical characteristics of apigenin: Antiradical, metal chelation and inhibitory properties in physiologically relevant media. Fitoterapia 2023; 164:105352. [PMID: 36400153 DOI: 10.1016/j.fitote.2022.105352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/11/2022] [Accepted: 11/11/2022] [Indexed: 11/17/2022]
Abstract
Density functional theory was used to examine the antioxidant activity of apigenin. All protonated species that are present in a non-negligible population at physiological pH were considered in the study. The ability to scavenge the hydroperoxide radical was evaluated in lipid and aqueous environments. The capacity to halt the Fenton reaction by chelating Fe(III) and Cu(II) ions was also investigated, as was the ability to inhibit xanthine oxidase. The results indicate that these activities may be particularly important in describing the beneficial effects of apigenin, especially because of its lower anti-•OOH potential than Trolox or vitamin C. The findings underscore the significant role of dianion in the antiradical and chelating properties, despite its presence in much lower molar fractions than other ions.
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Affiliation(s)
- Maciej Spiegel
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland.
| | - Zbigniew Sroka
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland
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Xanthine oxidase inhibitory potentials of flavonoid aglycones of Tribulus terrestris: in vivo, in silico and in vitro studies. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2022. [DOI: 10.1186/s43094-022-00448-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Abstract
Background
Despite the ongoing safety-driven spate of flavonoid xanthine oxidase (XOD) inhibition investigations, there is a lack of flavonoid-based uricostatic antihyperuricemic agents in clinical medicine. The poor pharmacokinetic profiles of glycosides (the natural form of existence of most flavonoids) relative to their aglycones could be largely responsible for this paradox. This investigation was aimed at providing both functional and molecular bases for the possible discovery of XOD inhibitory (or uricostatic) anti-hyperuricemic flavonoid aglycones from the leaves of a flavonoid-rich medicinal plant, Tribulus terrestris. To this end, the flavonoid aglycone fraction of T. terrestris leaf extract (FATT) was evaluated in vivo for antihyperuricemic activity in ethanol-induced hyperuricemic mice, monitoring serum and liver uric acid levels. Molecular docking and molecular dynamics simulation studies were carried out on the three major flavonoid aglycones of T. terrestris (isorhamnetin, quercetin and kaempferol) against an inhibitor conformation XOD model. The three flavonoids were also subjected to in vitro XOD activity assay, comparing their IC50 to that of allopurinol, a standard uricostatic antihyperuricemic drug.
Results
FATT significantly lowered serum uric acid (p < 0.0001) and liver uric acid (p < 0.05) levels of the experimental animals, implying anti-hyperuricemic activity with uricostatic action mechanism allusions. Molecular docking studies revealed high binding affinity values (− 7.8, − 8.1, − 8.2 kcal/mol) for the aglycones (isorhamnetin, quercetin and kaempferol, respectively). Radius of gyration and RMSD analyses of the molecular dynamics simulation trajectories of the three aglycone–XOD complexes revealed substantial stability, the highest stability being demonstrated by the kaempferol–XOD complex. In vitro XOD activity assay showed kaempferol (IC50: 8.2 ± 0.9 μg/ml), quercetin (IC50: 20.4 ± 1.3 μg/ml) and isorhamnetin (IC50: 22.2 ± 2.1 μg/ml) to be more potent than allopurinol (IC50: 30.1 ± 3.0 μg/ml).
Conclusion
This work provides a scientific basis for the use of T. terrestris in the treatment of hyperuricemia-related (e.g. kidney stone and gout) disorders. It also provides the molecular basis for a focussed screening of the flavonoid aglycones chemical space for the possible discovery of flavonoid-based uricostatic anti-hyperuricemic drugs or drug templates.
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Yu Z, Cao Y, Kan R, Ji H, Zhao W, Wu S, Liu J, Shiuan D. Identification of egg protein-derived peptides as xanthine oxidase inhibitors: virtual hydrolysis, molecular docking, and in vitro activity evaluation. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2022.06.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Bogari HA, Rashied RMH, Abdelfattah MAO, Malatani RT, Khinkar RM, Hareeri RH, Wink M, Sobeh M. Euclea divinorum Hiern: Chemical Profiling of the Leaf Extract and Its Antioxidant Activity In Silico, In Vitro and in Caenorhabditis elegans Model. Metabolites 2022; 12:metabo12111031. [PMID: 36355114 PMCID: PMC9696633 DOI: 10.3390/metabo12111031] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/17/2022] [Accepted: 10/24/2022] [Indexed: 12/03/2022] Open
Abstract
Euclea divinorum Hiern is a medicinal plant widely distributed in the northeast parts of South Africa. This plant has been used to treat miscarriage and to alleviate gastrointestinal problems. It can also be used externally for the treatment of ulcers and gonorrhea. In this study, we investigated the phytochemical composition of E. divinorum leaf extract using LC-MS and explored its antioxidant properties in vitro and in vivo. The total polyphenolic content of the extract was determined by the Folin–Ciocalteu method. DPPH and FRAP assays were employed to confirm the plant’s antioxidant potential in vitro. A survival assay in the Caenorhabditis elegans model was used to evaluate the extract’s ability to counteract juglone-induced oxidative stress. Moreover, a docking study was performed for the extract’s metabolites, in order to predict possible molecular targets that could explain the antioxidant effect of the plant on a molecular level. This in silico approach was accomplished on three different proteins; xanthine oxidase enzyme, heat shock protein 90 (Hsp90), and induced nitric oxide synthase (iNOS). Docking scores of the resulting poses and their interactions with binding sites’ residues were explored for each protein and were compared to those of simultaneously docked respective co-crystallized and reference substrates. The extract furnished promising antioxidant activities in vitro and in vivo in the C. elegans model that might be attributed to the presence of 46 compounds, which showed several interactions and low binding scores with the tested enzymes. In conclusion, E. divinorum is a promising, safe, and effective antioxidant candidate that could be used to ameliorate oxidative stress-related disorders.
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Affiliation(s)
- Hanin A. Bogari
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Rasha M. H. Rashied
- School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, New Administrative Capital, Cairo 11835, Egypt
| | | | - Rania T. Malatani
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Roaa M. Khinkar
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Rawan H. Hareeri
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany
| | - Mansour Sobeh
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120 Heidelberg, Germany
- AgroBioSciences, Mohammed VI Polytechnic University, Ben-Guerir 43150, Morocco
- Correspondence: or
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Recent advances in gout drugs. Eur J Med Chem 2022; 245:114890. [DOI: 10.1016/j.ejmech.2022.114890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 11/24/2022]
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25
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Phenolic Compound in Garlic (Allium sativum) and Black Garlic Potency as Antigout Using Molecular Docking Approach. JURNAL KIMIA SAINS DAN APLIKASI 2022. [DOI: 10.14710/jksa.25.7.253-263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Phenolics, including flavonoids, are bioactive components in garlic in relatively abundant amounts and are present 2–4 times more in black garlic. Both of these compounds are reported to have biological activity, with one of them acting as an antioxidant. However, its ability as an antigout is still not widely reported. Xanthine oxidase, adenine deaminase, guanine deaminase, purine nucleoside phosphorylase, and 5-Nucleotidase II are involved during the production of uric acid and causes gout. This study predicted the potential of the phenolic and flavonoid compounds in garlic and black garlic as antigout in inhibiting five target receptors through a molecular docking approach. Utilizing AutoDock Tools v.1.5.7 for receptor and ligand preparation, AutoDock Vina and AutoDock4 for molecular docking, and LigPlot+ and PyMOL for visualization. About 21 compounds from the phenolic and flavonoid groups were used as test ligands and 16 reference ligands (substrate and commercial). SwissADME predicted the pharmacokinetic parameters. The results showed that apigenin, morin, resveratrol, kaempferol, (+)-catechin, isorhamnetin, and (-)-epicatechin were predicted to have good interactions at each target receptor and had the potential to be developed as candidates for multi-target antigout. Based on the pharmacokinetic parameters, all these compounds had good scores in each, making them feasible to continue in vitro or in vivo trials.
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Wu H, Yin J, Xiao S, Zhang J, Richards MP. Quercetin as an inhibitor of hemoglobin-mediated lipid oxidation: Mechanisms of action and use of molecular docking. Food Chem 2022; 384:132473. [PMID: 35219235 DOI: 10.1016/j.foodchem.2022.132473] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 02/06/2022] [Accepted: 02/13/2022] [Indexed: 11/30/2022]
Abstract
The antioxidant effect of quercetin on hemoglobin(Hb)-mediated lipid oxidation and the mechanisms involved were investigated. Quercetin strongly inhibited Hb-mediated lipid oxidation in washed muscle. Quercetin showed effective hydroxyl radical scavenging ability similar to butylated hydroxytoluene (BHT). Quercetin reduced metHb resulting in formation of oxyHb. Bound quercetin decreased heme dissociation from metHb. Conversion to oxyHb and decreased heme dissociation represent routes to limit Hb-mediated lipid oxidation. Electrospray ionization mass spectrometry (ESI-MS) indicated one molecule of quercetin was covalently bound to Hb α-chain. Quercetin quinone docked 3.3 Å from the thiol of αCys(H15) but not near any other Cys residues of turkey Hb. At the docking site, hydrogen bonding between quercetin quinone and amino acids of α- and β-chain was demonstrated. This represents a path by which quercetin became covalently bound to α-chain. Molecular docking of heme proteins to polyphenols provides a template to better understand antioxidant interactions in muscle foods.
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Affiliation(s)
- Haizhou Wu
- National Center of Meat Quality, Safety Control, Jiangsu Innovation Center of Meat Production, Processing, College of Food Science, Technology, Nanjing Agricultural University, Nanjing 210095, PR China; Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Meat Science and Animal Biologics Discovery Program, 1933 Observatory Dr. Madison, WI 53706, United States; Department of Biology and Biological Engineering-Food and Nutrition Science, Chalmers University of Technology, SE 412 96 Gothenburg, Sweden
| | - Jie Yin
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Meat Science and Animal Biologics Discovery Program, 1933 Observatory Dr. Madison, WI 53706, United States
| | - Shulan Xiao
- National Center of Meat Quality, Safety Control, Jiangsu Innovation Center of Meat Production, Processing, College of Food Science, Technology, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jianhao Zhang
- National Center of Meat Quality, Safety Control, Jiangsu Innovation Center of Meat Production, Processing, College of Food Science, Technology, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Mark P Richards
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Meat Science and Animal Biologics Discovery Program, 1933 Observatory Dr. Madison, WI 53706, United States.
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Yang YS, Wang B, Zhou KM, Liu J, Jiao QC, Qin P. Discovery of derivatives from Spartina alterniflora-sourced moiety as xanthine oxidase inhibitors to lower uric acid. Bioorg Med Chem Lett 2022; 73:128907. [PMID: 35902063 DOI: 10.1016/j.bmcl.2022.128907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/16/2022] [Accepted: 07/21/2022] [Indexed: 11/17/2022]
Abstract
In this work, hit compounds Spartinin F1-F20 sharing the Spartina alterniflora-sourced ferulic acid backbone were synthesized and evaluated on inhibiting xanthine oxidase and lowering uric acid level. The top hit Spartinin F2 exhibited inhibition percentages at 10 μM dosage as high as 84.48 (higher than that of the positive control allopurinol) and low cyto-toxicity. Spartinin F2 inferred potential efficiency in lowering the serum UA level (from 631.6 μM to 295.0 μM), which was comparable with allopurinol (to 309.2 μM). Spartinin F2 was also beneficial for other serum indexes. The bioavailability of Spartinin F2 was 63.71% from the preliminary pharmacokinetics test and the molecular docking simulation indicated that except for retaining the hydrogen bonds with the key residues such as THR 1010 and LYS 771, the introduction of the π-sulfur interactions via the sulfonate might also be beneficial for developing more potent XO inhibitors.
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Affiliation(s)
- Yu-Shun Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China; Research and Development Center, Nanjing Shibeitai Biotechnology Co., Ltd., Nanjing 210003, China.
| | - Bin Wang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Kang-Min Zhou
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Junzhong Liu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Qin-Cai Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China.
| | - Pei Qin
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, China; Research and Development Center, Nanjing Shibeitai Biotechnology Co., Ltd., Nanjing 210003, China.
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Kaur G, Singh A, Arora G, Monga A, Jassal AK, Uppal J, Bedi PMS, Bora KS. Synthetic heterocyclic derivatives as promising xanthine oxidase inhibitors: An overview. Chem Biol Drug Des 2022; 100:443-468. [PMID: 35763448 DOI: 10.1111/cbdd.14109] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/19/2022] [Accepted: 06/26/2022] [Indexed: 11/28/2022]
Abstract
Inhibition of xanthine oxidase is an effective and most prominent therapeutic approach for the management of gout. Discovery of its association in the pathophysiology of diabetes, cardiovascular disorders, etc., widened its therapeutic horizons. Limited drug candidates in clinical practice along with side effects forced researchers to develop more efficacious and safer xanthine oxidase inhibitors for the management of gout and other disorders associated with xanthine oxidase hyperactivity. In this regard, this review focus on: (a) Various drug candidates in clinical practice and under clinical trials, (b) Development of various heterocyclic motifs as xanthine oxidase inhibitors in last two decades and (c) Various patented synthetic xanthine oxidase inhibitors.
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Affiliation(s)
- Gurinder Kaur
- University Institute of Pharma. Sciences, Chandigarh University, Mohali, Punjab, India
| | - Atamjit Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Geetakshi Arora
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Aditi Monga
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Anupmjot Kaur Jassal
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Jasreen Uppal
- University Institute of Pharma. Sciences, Chandigarh University, Mohali, Punjab, India
| | - Preet Mohinder Singh Bedi
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India.,Drug and Pollution testing Laboratory, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Kundan Singh Bora
- University Institute of Pharma. Sciences, Chandigarh University, Mohali, Punjab, India
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Karakılıç E, Alım Z, Günel A, Baran A. A versatile study of novel A3B-type unsymmetric zinc(II) phthalocyanines containing thiazolidin-4-one: Their, carbonic anhydrase I, II isoenzymes, and xanthine oxidase inhibitors evaluation. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Characterization of xanthine oxidase inhibitory activities of phenols from pickled radish with molecular simulation. Food Chem X 2022; 14:100343. [PMID: 35634221 PMCID: PMC9136259 DOI: 10.1016/j.fochx.2022.100343] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/12/2022] [Accepted: 05/18/2022] [Indexed: 11/30/2022] Open
Abstract
The 2,6-Dihydroxyacetophenone (DHAP), 4-Hydroxyphenethyl alcohol (4-HPEA), and 4-Hydroxybenzaldehyde (HBA) in pickled radish showed a good affinity for xanthine oxidase (XOD) in the molecular docking results. DHAP, 4-HPEA and HBA inhibit in vitro XOD enzymatic activity by affecting secondary structure and hydrophobic groups, IC50 were: 1.24 ± 0.02 mM, 24.52 ± 0.8 mM, and 2.67 ± 0.9 µM, respectively. DHAP, 4-HPEA and HBA reduce xanthine-induced high uric acid levels in BRL 3A cells by inhibiting XOD enzyme activity (p < 0.05).
Pickled radish is a general source of natural bioactive compounds that include phenols. Here, we used molecular docking, fluorescence quenching, circular dichroism spectroscopy and molecular dynamics simulations to identify potential inhibitors against xanthine oxidase from a library of pickled radish compounds. The most effective compounds were selected for validation through in vitro experiments including enzyme activity inhibition tests, and cell-based assays. Molecular docking results revealed that 2,6-Dihydroxyacetophenone, 4-Hydroxyphenethyl alcohol, and 4-Hydroxybenzaldehyde exhibited significant effects on xanthine oxidase inhibition. Three phenols have varying degrees of inhibition on xanthine oxidase, which is driven by hydrophobic interactions and hydrogen bonds and affects the secondary structure and hydrophobic homeostasis of xanthine oxidase. The stability of xanthine oxidase inhibition by three phenols was analyzed by molecular dynamics simulation. Finally, cellular experiments confirmed that three phenols reduced uric acid levels by inhibiting the xanthine oxidase enzyme activity of BRL 3A cells.
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Feng S, Wu S, Xie F, Yang CS, Shao P. Natural compounds lower uric acid levels and hyperuricemia: Molecular mechanisms and prospective. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Manzanilla B, Robles J. Antiradical properties of curcumin, caffeic acid phenethyl ester, and chicoric acid: a DFT study. J Mol Model 2022; 28:68. [PMID: 35218436 DOI: 10.1007/s00894-022-05056-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 02/11/2022] [Indexed: 12/26/2022]
Abstract
The antiradical properties and possible mechanisms of action of the tautomers of curcumin, caffeic acid phenethyl ester (CAPE), and chicoric acid (CA) have been studied within density functional theory (DFT). We calculated global chemical reactivity descriptors from conceptual DFT, pKa, bioavailability, and toxicity to evaluate the antiradical properties and characterize these species. Our final level of theory is the M06-2X functional with the 6-31 + G* basis set; we selected this level after performing a benchmark calibration and validation among different levels. Solvent effects were modeled via the continuum solvation model based on density (SMD). We used water and pentyl ethanoate as solvents to simulate the physiological conditions. The free radical scavenger capacity was analyzed for three possible oxidative stress mechanisms: single electron transfer (SET), hydrogen atom transfer (HAT), and xanthine oxidase (XO) inhibition. The results indicate that neutral curcumin, CA, and CAPE behave as antireductants. The most favorable mechanism turns out to be HAT, where CA and CAPE stand out. In conclusion, our DFT study strongly indicates that neutral curcumin, CAPE, and CA would very likely perform well as antiradical drugs with recommended therapeutic use, supported by their non-toxic nature.
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Affiliation(s)
- Brenda Manzanilla
- Departamento de Farmacia, DCNE, Universidad de Guanajuato, Noria Alta S/N. Col. Noria Alta, Gto., C. P. 36050, Guanajuato, México
| | - Juvencio Robles
- Departamento de Farmacia, DCNE, Universidad de Guanajuato, Noria Alta S/N. Col. Noria Alta, Gto., C. P. 36050, Guanajuato, México.
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Ghallab DS, Shawky E, Metwally AM, Celik I, Ibrahim RS, Mohyeldin MM. Integrated in silico - in vitro strategy for the discovery of potential xanthine oxidase inhibitors from Egyptian propolis and their synergistic effect with allopurinol and febuxostat. RSC Adv 2022; 12:2843-2872. [PMID: 35425287 PMCID: PMC8979054 DOI: 10.1039/d1ra08011c] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 01/04/2022] [Indexed: 01/19/2023] Open
Abstract
Xanthine oxidase (XO) has been well-recognized as a validated target for the treatment of hyperuricemia and gout. Currently, there are two drugs in clinical use that shut down XO overactivity, allopurinol and febuxostat; however, detrimental side effects restrict their applications. Propolis is a unique natural adhesive biomass of structurally variable and biologically active metabolites that exert remarkable health benefits. Moreover, combination drug therapy has become a promising pharmacotherapeutic strategy directed for reformulating existing drugs into new combination entities with potentiating therapeutic impacts. In this study, computer-aided molecular docking and MD simulations accompanied by biochemical testing were used for mining novel pharmacologically active chemical entities from Egyptian propolis to combat hyperuricemia. Further, with a view to decrease the potential toxicity of synthetic drugs and enhance efficacy, propolis hits were subjected to combination analysis with each of allopurinol and febuxostat. More specifically, Glide docking was utilized for a structure-based virtual screening of in-house datasets comprising various Egyptian propolis metabolites. Rosmarinic acid, luteolin, techtochrysin and isoferulic acid were the most promising virtual hits. In vitro XO inhibitory assays demonstrated the ability of these hits to significantly inhibit XO in a dose-dependent manner. Molecular docking and MD simulations revealed a cooperative binding mode between the discovered hits and standard XO inhibitors within the active site. Subsequently, the most promising hits were tested in a fixed-ratio combination setting with allopurinol and febuxostat separately to assess their combined effects on XO catalytic inhibition. The binary combination of each techtochrysin and rosmarinic acid with febuxostat displayed maximal synergy at lower effect levels. In contrast, individually, techtochrysin and rosmarinic acid with allopurinol cooperated synergistically at high dose levels. Taken together, the suggested strategy seems imperative to ensure a steady supply of new therapeutic options sourced from Egyptian propolis to regress the development of hyperuricemia. Xanthine oxidase (XO) has been well-recognized as a validated target for the treatment of hyperuricemia and gout.![]()
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Affiliation(s)
- Dina S Ghallab
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University Alexandria 21521 Egypt +20-1223821098
| | - Eman Shawky
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University Alexandria 21521 Egypt +20-1223821098
| | - Ali M Metwally
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University Alexandria 21521 Egypt +20-1223821098
| | - Ismail Celik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erciyes University Kayseri 38039 Turkey
| | - Reham S Ibrahim
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University Alexandria 21521 Egypt +20-1223821098
| | - Mohamed M Mohyeldin
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University Alexandria 21521 Egypt +20-1223821098
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Computational Screening for the Anticancer Potential of Seed-Derived Antioxidant Peptides: A Cheminformatic Approach. Molecules 2021; 26:molecules26237396. [PMID: 34885982 PMCID: PMC8659047 DOI: 10.3390/molecules26237396] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 11/17/2022] Open
Abstract
Some seed-derived antioxidant peptides are known to regulate cellular modulators of ROS production, including those proposed to be promising targets of anticancer therapy. Nevertheless, research in this direction is relatively slow owing to the inevitable time-consuming nature of wet-lab experimentations. To help expedite such explorations, we performed structure-based virtual screening on seed-derived antioxidant peptides in the literature for anticancer potential. The ability of the peptides to interact with myeloperoxidase, xanthine oxidase, Keap1, and p47phox was examined. We generated a virtual library of 677 peptides based on a database and literature search. Screening for anticancer potential, non-toxicity, non-allergenicity, non-hemolyticity narrowed down the collection to five candidates. Molecular docking found LYSPH as the most promising in targeting myeloperoxidase, xanthine oxidase, and Keap1, whereas PSYLNTPLL was the best candidate to bind stably to key residues in p47phox. Stability of the four peptide-target complexes was supported by molecular dynamics simulation. LYSPH and PSYLNTPLL were predicted to have cell- and blood-brain barrier penetrating potential, although intolerant to gastrointestinal digestion. Computational alanine scanning found tyrosine residues in both peptides as crucial to stable binding to the targets. Overall, LYSPH and PSYLNTPLL are two potential anticancer peptides that deserve deeper exploration in future.
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Natural Xanthine Oxidase Inhibitor 5- O-Caffeoylshikimic Acid Ameliorates Kidney Injury Caused by Hyperuricemia in Mice. Molecules 2021; 26:molecules26237307. [PMID: 34885887 PMCID: PMC8659034 DOI: 10.3390/molecules26237307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 11/21/2021] [Accepted: 11/29/2021] [Indexed: 11/21/2022] Open
Abstract
Xanthine oxidase (XOD) inhibition has long been considered an effective anti-hyperuricemia strategy. To identify effective natural XOD inhibitors with little side effects, we performed a XOD inhibitory assay-coupled isolation of compounds from Smilacis Glabrae Rhizoma (SGR), a traditional Chinese medicine frequently prescribed as anti-hyperuricemia agent for centuries. Through the in vitro XOD inhibitory assay, we obtained a novel XOD inhibitor, 5-O-caffeoylshikimic acid (#1, 5OCSA) with IC50 of 13.96 μM, as well as two known XOD inhibitors, quercetin (#3) and astilbin (#6). Meanwhile, we performed in silico molecular docking and found 5OCSA could interact with the active sites of XOD (PDB ID: 3NVY) with a binding energy of −8.6 kcal/mol, suggesting 5OCSA inhibits XOD by binding with its active site. To evaluate the in vivo effects on XOD, we generated a hyperuricemia mice model by intraperitoneal injection of potassium oxonate (300 mg/kg) and oral gavage of hypoxanthine (500 mg/kg) for 7 days. 5OCSA could inhibit both hepatic and serum XOD in vivo, together with an improvement of histological and multiple serological parameters in kidney injury and HUA. Collectively, our results suggested that 5OCSA may be developed into a safe and effective XOD inhibitor based on in vitro, in silico and in vivo evidence.
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Purification, Identification and Characterization of Antioxidant Peptides from Corn Silk Tryptic Hydrolysate: An Integrated In Vitro-In Silico Approach. Antioxidants (Basel) 2021; 10:antiox10111822. [PMID: 34829693 PMCID: PMC8615004 DOI: 10.3390/antiox10111822] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/08/2021] [Accepted: 11/12/2021] [Indexed: 11/23/2022] Open
Abstract
Corn silk (CS) is an agro-by-product from corn cultivation. It is used in folk medicines in some countries, besides being commercialized as health-promoting supplements and beverages. Unlike CS-derived natural products, their bioactive peptides, particularly antioxidant peptides, are understudied. This study aimed to purify, identify and characterize antioxidant peptides from trypsin-hydrolyzed CS proteins. Purification was accomplished by membrane ultrafiltration, gel filtration chromatography, and strong-cation-exchange solid-phase extraction, guided by 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radical cation (ABTS•+) scavenging, hydrogen peroxide scavenging, and lipid peroxidation inhibition assays. De novo sequencing identified 29 peptides (6–14 residues; 633–1518 Da). The peptides consisted of 33–86% hydrophobic and 10–67% basic residues. Molecular docking found MCFHHHFHK, VHFNKGKKR, and PVVWAAKR having the strongest affinity (−4.7 to −4.8 kcal/mol) to ABTS•+, via hydrogen bonds and hydrophobic interactions. Potential cellular mechanisms of the peptides were supported by their interactions with modulators of intracellular oxidant status: Kelch-like ECH-associated protein 1, myeloperoxidase, and xanthine oxidase. NDGPSR (Asn-Asp-Gly-Pro-Ser-Arg), the most promising peptide, showed stable binding to all three cellular targets, besides exhibiting low toxicity, low allergenicity, and cell-penetrating potential. Overall, CS peptides have potential application as natural antioxidant additives and functional food ingredients.
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Kröber T, Bartsch SM, Fiedler D. Pharmacological tools to investigate inositol polyphosphate kinases - Enzymes of increasing therapeutic relevance. Adv Biol Regul 2021; 83:100836. [PMID: 34802993 DOI: 10.1016/j.jbior.2021.100836] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 01/01/2023]
Abstract
Inositol poly- and pyrophosphates (InsPs and PP-InsPs) are a group of central eukaryotic metabolites and signaling molecules. Due to the diverse cellular functions and widespread diseases InsPs and PP-InsPs are associated with, pharmacological targeting of the kinases involved in their biosynthesis has become a significant research interest in the last decade. In particular, the development of inhibitors for inositol hexakisphosphate kinases (IP6Ks) has leaped forward, while other inositol phosphate kinases have received scant attention. This review summarizes the efforts undertaken so far for discovering potent and selective inhibitors for this diverse group of small molecule kinases. The benefits of pharmacological inhibition are highlighted, given the multiple kinase-independent functions of inositol phosphate kinases. The distinct structural families of InsP and PP-InsP kinases are presented, and we discuss how compound availability for different inositol phosphate kinase families varies drastically. Lead compound discovery and optimization for the inositol kinases would benefit from detailed structural information on the ATP-binding sites of these kinases, as well as reliable biochemical and cellular read-outs to monitor inositol phosphate kinase activity in complex settings. Efforts to further tune well-established inhibitors, while simultaneously reviving tool compound development for the more neglected kinases from this family are indisputably worthwhile, considering the large potential therapeutic benefits.
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Affiliation(s)
- Tim Kröber
- Leibniz Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125, Berlin, Germany; Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
| | - Simon M Bartsch
- Leibniz Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125, Berlin, Germany; Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
| | - Dorothea Fiedler
- Leibniz Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Straße 10, 13125, Berlin, Germany; Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
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Zhu M, Pan J, Hu X, Zhang G. Epicatechin Gallate as Xanthine Oxidase Inhibitor: Inhibitory Kinetics, Binding Characteristics, Synergistic Inhibition, and Action Mechanism. Foods 2021; 10:2191. [PMID: 34574301 PMCID: PMC8464939 DOI: 10.3390/foods10092191] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 01/03/2023] Open
Abstract
Epicatechin gallate (ECG) is one of the main components of catechins and has multiple bioactivities. In this work, the inhibitory ability and molecular mechanism of ECG on XO were investigated systematically. ECG was determined as a mixed xanthine oxidase (XO) inhibitor with an IC50 value of 19.33 ± 0.45 μM. The promotion of reduced XO and the inhibition of the formation of uric acid by ECG led to a decrease in O2- radical. The stable ECG-XO complex was formed by hydrogen bonds and van der Waals forces, with the binding constant of the magnitude of 104 L mol-1, and ECG influenced the stability of the polypeptide skeleton and resulted in a more compact conformation of XO. Computational simulations further characterized the binding characteristics and revealed that the inhibitory mechanism of ECG on XO was likely that ECG bound to the vicinity of flavin adenine dinucleotide (FAD) and altered the conformation of XO, hindering the entry of substrate and the diffusion of catalytic products. ECG and allopurinol bound to different active sites of XO and exerted a synergistic inhibitory effect through enhancing their binding stability with XO and changing the target amino acid residues of XO. These findings may provide a theoretical basis for the further application of ECG in the fields of food nutrition and functional foods.
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Affiliation(s)
| | | | | | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; (M.Z.); (J.P.); (X.H.)
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Abstract
Objective. Emerging data indicate that oxidative stress is closely associated with the pathogenesis of cardiovascular disease in type 2 diabetes mellitus (T2DM). The present study aimed to assess the effect of the most abundant flavonoid in the human diet quercetin (Q) on the myocardial redox status in rats with T2DM. Methods. T2DM was induced in male Wistar rats by a high caloric diet (for 14 weeks) and two streptozotocin (25 mg/kg b.w.) injections applied in four weeks of the diet, once a week for two weeks. The Q was administered intragastrically by gavage in a dose of 10 or 50 mg/kg of the body weight for 8 weeks starting from the 8th day after the last streptozotocin injection. The control rats received citrate buffer and seven days after the last STZ injection, basal glucose levels were measured in all animals. Results. Administration of Q increased insulin sensitivity in diabetic rats with more pronounced effect at a dose of 50 mg/kg b.w. The Q also decreased free radical oxidation in the heart mitochondria of diabetic animals, thus limiting the formation of advanced oxidation protein products in a dose-dependent manner and normalized the activity of antioxidant enzymes (superoxide dismutase, glutathione peroxidase, glutathione reductase) in cardiac mitochondria independently of the dose used. In addition, the Q in both doses prevented the development of oxidative stress in the T2DM rats cardiomyocytes by reducing NADPH oxidase and xanthine oxidase activities. Conclusions. The findings demonstrate that Q in both doses 10 mg/kg and 50 mg/kg can protect from the development of oxidative stress in cardiomyocytes in the diabetic rats. The present data indicate that the use of Q may contribute to the amelioration of cardiovascular risk in patients with T2DM.
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Wang M, Chen J, Zhang R, Guo X, Chen D, Guo X, Chen Y, Wu Y, Sun J, Liu Y, Liu C. Design, synthesis and bioactive evaluation of geniposide derivatives for antihyperuricemic and nephroprotective effects. Bioorg Chem 2021; 116:105321. [PMID: 34500305 DOI: 10.1016/j.bioorg.2021.105321] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/18/2021] [Accepted: 08/29/2021] [Indexed: 02/07/2023]
Abstract
Hyperuricemia is a principal factor mediating gout and kidney damage, and xanthine oxidase (XOD) is a key enzyme in the pathogenesis of hyperuricemia. In this context, a series of geniposide derivatives were designed and synthesized, and antihyperuricemic and nephroprotective effects of all derivatives was evaluated in vitro and in vivo. Compound 2e emerged as the most potent XOD inhibitor, with an IC50 value of 6.67 ± 0.46 µM. Simultaneously, cell viability, ROS generation, and SOD levels assay showed that compound 2e could repair the damage of HKC cells by inhibiting the oxidative stress response. The results of the study indicated compound 2e significantly decreased uric acid levels by inhibiting the XOD activity, and repaired kidney damage by inhibiting the expression of TLR4/TLR2/MyD88/NF-κB and NALP3/ASC/caspase-1 signaling pathways. Enzyme inhibition kinetics suggested that compound 2e functioned via reversible mixed competitive inhibition. Moreover, a molecular docking study was performed to gain insight into the binding mode of compound 2e with XOD. These results suggest that geniposide derivatives were potential to be developed into a novel medicine to reveal healthy benefits in natural prevention and reduction risk of hyperuricemia and kidney damage.
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Affiliation(s)
- Muxuan Wang
- Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan 250100, PR China
| | - Jiashu Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, 88 East Wenhua Road, Jinan 250014, PR China
| | - Ruirui Zhang
- Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan 250100, PR China
| | - Xinyan Guo
- Shandong Academy of Pharmaceutical Science, Key Laboratory of Biopharmaceuticals, Jinan 250101, PR China
| | - Daxia Chen
- Chongqing Academy of Chinese Materia Medica, Chongqing 400065, PR China
| | - Xu Guo
- Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan 250100, PR China
| | - Yingying Chen
- Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan 250100, PR China
| | - Yuhao Wu
- College of Food Science and Engineering, Shandong Agricultural University, Tai'an 271018, PR China
| | - Jinyue Sun
- Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan 250100, PR China.
| | - Yufa Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, 88 East Wenhua Road, Jinan 250014, PR China.
| | - Chao Liu
- Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, 202 Gongye North Road, Jinan 250100, PR China.
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Vijeesh V, Jisha N, Vysakh A, Latha MS. Interaction of eugenol with xanthine oxidase: Multi spectroscopic and in silico modelling approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 258:119843. [PMID: 33933941 DOI: 10.1016/j.saa.2021.119843] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 03/04/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Eugenol, a major component in clove has various biological activities. The current study focused to the binding potential of eugenol with Xanthine oxidase (XO) were evaluated using multi spectroscopic techniques and in silico docking studies. Xanthine oxidase, a superoxide generating enzyme, catalyses hypoxanthine and xanthine to uric acid. An excessive uric acid and superoxide anion radical in our body causes many serious clinical complications. The activity and the structural alterations can be a significant method to reduce this kind of risk factors. The results obtained from the fluorescence titration exhibited the interactions initiated by a static quenching mechanism. The ultraviolet (UV), fourier-transform infrared (FTIR), circular dichroism (CD) spectroscopic analysis of eugenol bind with XO indicated the secondary structural alteration in XO. Docking studies showed molecular level interaction of eugenol with the amino acid residues of Thr 1010, Phe 914, Phe 1009, Leu 1014, Phe 1009, Val 1011, Arg 880, Ala 1078, Glu 802, Leu 648and Leu 873 which residing at the catalytic active site of the XO. These results inferred that the eugenol can interact with XO in a remarkable manner and these findings provide a supporting data for the XO inhibition studies to propose a new lead compound.
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Affiliation(s)
- V Vijeesh
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India
| | - Ninan Jisha
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India
| | - A Vysakh
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India
| | - M S Latha
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India.
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42
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Liu Y, Qin Y, Zhang Q, Zou W, Jin L, Guo R. Arginine-rich peptide/platinum hybrid colloid nanoparticle cluster: A single nanozyme mimicking multi-enzymatic cascade systems in peroxisome. J Colloid Interface Sci 2021; 600:37-48. [PMID: 34010774 DOI: 10.1016/j.jcis.2021.05.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 12/27/2022]
Abstract
Recently, nanozymes have attracted sustained attention for facilitating next generation of artificial enzymatic cascade systems (ECSs). However, the fabrication of integrated multi-ECSs based on a single nanozyme remains a great challenge. Here, inspired by the biological function and self-assembling ability of arginine (R), we synthesized arginine-rich peptide-Pt nanoparticle cluster (ARP-PtNC) nanozymes that mimic two typical enzymatic cascade systems of uricase/catalase and superoxide dismutase/catalase in natural peroxisome. ARPs containing at least 10 arginine residues contribute to the cluster formation based on hydrogen bonding and coordination. The well-designed peptide-Pt hybrid nanozyme not only possesses excellent uricase-mimicking activity to degrade uric acid effectively, but also serves as a desired scavenger for reactive oxygen species (ROS) harnessing two efficient enzyme cascade catalysis of uricase/catalase and superoxide dismutase/catalase. The surface microenvironment of the hybrid nanozymes provided by arginine-rich peptides and the cluster structure contribute to the efficient multiply enzyme-like activities. Fascinatingly, the hybrid nanozyme can inhibit the formation of monosodium urate monohydrate effectively based on the architecture of ARP-PtNCs. Thus, ARP-PtNC nanozyme has the potential in gout and hyperuricemia therapy. Rational design of ingenious peptide-metal hybrid nanozyme with unique physicochemical surface properties provides a versatile and designed strategy to fabricate multi-enzymatic cascade systems, which opens new avenues to broaden the application of nanozymes in practice.
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Affiliation(s)
- Yan Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, PR China.
| | - Yuling Qin
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, PR China
| | - Qianya Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, PR China
| | - Wenting Zou
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, PR China
| | - Lingcen Jin
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, PR China
| | - Rong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, PR China.
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43
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Pan Y, Lu Z, Li C, Qi R, Chang H, Han L, Han W. Molecular Dockings and Molecular Dynamics Simulations Reveal the Potency of Different Inhibitors against Xanthine Oxidase. ACS OMEGA 2021; 6:11639-11649. [PMID: 34056319 PMCID: PMC8154014 DOI: 10.1021/acsomega.1c00968] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/08/2021] [Indexed: 05/27/2023]
Abstract
Xanthine oxidase (XO), which can catalyze the formation of xanthine or hypoxanthine to uric acid, is the most important target of gout. To explore the conformational changes for inhibitor binding, molecular dockings and molecular dynamics simulations were performed. Docking results indicated that three inhibitors had similar pose binding to XO. Molecular dynamics simulations showed that the binding of three inhibitors influenced the secondary structure changes in XO. After binding to the inhibitor, the peptide Phe798-Leu814 formed different degrees of unhelix, while for the peptide Glu1065-Ser1075, only a partial helix region was formed when allopurinol was bound. Through the protein structure analysis in the simulation process, we found that the distance between the active residues Arg880 and Thr1010 was reduced and the distance between Glu802 and Thr1010 was increased after the addition of inhibitors. The above simulation results showed the similarities and differences of the interaction between the three inhibitors binding to the protein. MM-PBSA calculations suggested that, among three inhibitors, allopurinol had the best binding effect with XO followed by daidzin and puerarin. This finding was consistent with previous experimental data. Our results can provide some useful clues for further gout treatment research.
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Affiliation(s)
- Yue Pan
- Key
Laboratory for Molecular Enzymology and Engineering of Ministry of
Education, School of Life Science, Jilin
University, 2699 Qianjin Street, Changchun 130012, China
| | - Zhongkui Lu
- Key
Laboratory for Molecular Enzymology and Engineering of Ministry of
Education, School of Life Science, Jilin
University, 2699 Qianjin Street, Changchun 130012, China
| | - Congcong Li
- Key
Laboratory for Molecular Enzymology and Engineering of Ministry of
Education, School of Life Science, Jilin
University, 2699 Qianjin Street, Changchun 130012, China
| | - Renrui Qi
- Key
Laboratory for Molecular Enzymology and Engineering of Ministry of
Education, School of Life Science, Jilin
University, 2699 Qianjin Street, Changchun 130012, China
| | - Hao Chang
- Jilin
Province TeyiFood Biotechnology
Company Limited, Erdao District, Changchun 130012, China
| | - Lu Han
- Key
Laboratory for Molecular Enzymology and Engineering of Ministry of
Education, School of Life Science, Jilin
University, 2699 Qianjin Street, Changchun 130012, China
| | - Weiwei Han
- Key
Laboratory for Molecular Enzymology and Engineering of Ministry of
Education, School of Life Science, Jilin
University, 2699 Qianjin Street, Changchun 130012, China
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Orhan IE, Deniz FSS. Natural Products and Extracts as Xantine Oxidase Inhibitors - A Hope for Gout Disease? Curr Pharm Des 2021; 27:143-158. [PMID: 32723252 DOI: 10.2174/1381612826666200728144605] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 06/25/2020] [Indexed: 11/22/2022]
Abstract
Xanthine oxidase (EC 1.17.3.2) (XO) is one of the main enzymatic sources that create reactive oxygen species (ROS) in the living system. It is a dehydrogenase enzyme that performs electron transfer to nicotinamide adenine dinucleotide (NAD+), while oxidizing hypoxanthin, which is an intermediate compound in purine catabolism, first to xanthine and then to uric acid. XO turns into an oxidant enzyme that oxidizes thiol groups under certain stress conditions in the tissue. The last metabolic step, in which hypoxanthin turns into uric acid, is catalyzed by XO. Uric acid, considered a waste product, can cause kidney stones and gouty-type arthritis as it is crystallized, when present in high concentrations. Thus, XO inhibitors are one of the drug classes used against gout, a purine metabolism disease that causes urate crystal storage in the joint and its surroundings caused by hyperuricemia. Urate-lowering therapy includes XO inhibitors that reduce uric acid production as well as uricosuric drugs that increase urea excretion. Current drugs that obstruct uric acid synthesis through XO inhibition are allopurinol, febuxostat, and uricase. However, since the side effects, safety and tolerability problems of some current gout medications still exist, intensive research is ongoing to look for new, effective, and safer XO inhibitors of natural or synthetic origins for the treatment of the disease. In the present review, we aimed to assess in detail XO inhibitory capacities of pure natural compounds along with the extracts from plants and other natural sources via screening Pubmed, Web of Science (WoS), Scopus, and Google Academic. The data pointed out to the fact that natural products, particularly phenolics such as flavonoids (quercetin, apigenin, and scutellarein), tannins (agrimoniin and ellagitannin), chalcones (melanoxethin), triterpenes (ginsenoside Rd and ursolic acid), stilbenes (resveratrol and piceatannol), alkaloids (berberin and palmatin) have a great potential for new XO inhibitors capable of use against gout disease. In addition, not only plants but other biological sources such as microfungi, macrofungi, lichens, insects (silk worms, ants, etc) seem to be the promising sources of novel XO inhibitors.
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Affiliation(s)
- Ilkay E Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
| | - Fatma S S Deniz
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
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Yu Z, Kan R, Wu S, Guo H, Zhao W, Ding L, Zheng F, Liu J. Xanthine oxidase inhibitory peptides derived from tuna protein: virtual screening, inhibitory activity, and molecular mechanisms. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1349-1354. [PMID: 32820534 DOI: 10.1002/jsfa.10745] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/11/2020] [Accepted: 08/20/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND There has been growing interest in the use of xanthine oxidase (XO) as a therapeutic agent to prevent gout and hyperuricemia. In the present study, XO inhibitory peptides were identified from tuna protein by virtual screening, and molecular docking was used to elicit the interaction mechanism between XO and peptides. RESULTS A novel tetrapeptide, EEAK, exhibited high XO inhibitory activity with an IC50 of 173.00 ± 0.06 μM. Molecular docking analysis revealed that EEAK bound with the pivotal residues of XO's active sites (i.e., Glu802, Arg880, Glu1261) through two conventional hydrogen bond interactions, two attractive charge interactions, and one salt bridge. EEAK could also bind with the residues Phe649, Leu648, Lys771, Ser876, Phe914, and Thr1010 of XO. CONCLUSION This study suggested that conventional hydrogen bond interactions and electrostatic interactions play an important role in XO inhibition. The novel XO inhibitory peptide EEAK from tuna protein could be used as potential candidate for controlling gout and hyperuricemia. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Zhipeng Yu
- College of Food Science and Engineering, Bohai University, Jinzhou, P.R. China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, P.R. China
| | - Ruotong Kan
- College of Food Science and Engineering, Bohai University, Jinzhou, P.R. China
| | - Sijia Wu
- College of Food Science and Engineering, Bohai University, Jinzhou, P.R. China
| | - Hui Guo
- College of Food Science and Engineering, Bohai University, Jinzhou, P.R. China
| | - Wenzhu Zhao
- College of Food Science and Engineering, Bohai University, Jinzhou, P.R. China
| | - Long Ding
- College of Food Science and Engineering, Northwest A&F University, Yangling, P.R. China
| | - Fuping Zheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, P.R. China
| | - Jingbo Liu
- Laboratory of Nutrition and Functional Food, Jilin University, Changchun, P.R. China
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Ho SL, Lin CT, Lee SS. In silico design and synthesis of N-arylalkanyl 2-naphthamides as a new class of non-purine xanthine oxidase inhibitors. Drug Dev Res 2021; 82:789-801. [PMID: 33398913 DOI: 10.1002/ddr.21782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 12/08/2020] [Accepted: 12/26/2020] [Indexed: 12/17/2022]
Abstract
A series of N-arylalkanyl 2-naphthamides (Xa~e), which were predicted from virtual molecular docking on a built xanthine oxidase template as potential inhibitors, were synthesized. Their inhibitory activity against xanthine oxidase was assayed. Among these prepared, compounds Xb (IC50 13.6 μM), Xc (IC50 13.1 μM), and Xd (IC50 12.5 μM) showed comparable inhibitory activity to allopurinol (IC50 22.1 μM). The in vitro assay result correlated well with molecular docking scores, ΔG = -16.99, -17.66, and -17.13 Kcal/mol, respectively. On the potassium oxonate-induced hyperuricemic mice model, oral administration of Xc-Ac (40 mg/ Kg), the per-O-acetylated Xc, could reduce the blood uric acid level by 60% in comparison to the normal control group and is statistically significant (p < .01) while compared with the hyperuricemic mice group.
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Affiliation(s)
- Sheau Ling Ho
- Department of Chemical & Materials Engineering, Chinese Culture University, Taipei, Taiwan
| | - Ching-Ting Lin
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Shoei-Sheng Lee
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
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Chen J, Li Q, Ye Y, Ran M, Ruan Z, Jin N. Inhibition of xanthine oxidase by theaflavin: Possible mechanism for anti-hyperuricaemia effect in mice. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.06.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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48
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Singh JV, Bedi PMS, Singh H, Sharma S. Xanthine oxidase inhibitors: patent landscape and clinical development (2015–2020). Expert Opin Ther Pat 2020; 30:769-780. [DOI: 10.1080/13543776.2020.1811233] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jatinder Vir Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | | | - Harbinder Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Sahil Sharma
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab, India
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49
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Dong C, Montes M, Al-Sawai WM. Xanthine oxidoreductase inhibition – A review of computational aspect. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2020. [DOI: 10.1142/s0219633620400088] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Xanthine Oxidoreductase (XOR) exists in a variety of organisms from bacteria to humans and catalyzes the oxidation of hypoxanthine to xanthine and from xanthine to uric acid. Excessive uric acid could lead to gout and hyperuricemia. In this paper, we have reviewed the recent computational studies on xanthine oxidase inhibition. Computational methods, such as molecular dynamics (molecular mechanics), quantum mechanics, and quantum mechanics/molecular mechanics (QM/MM), have been employed to investigate the binding affinity of xanthine oxidase with synthesized and isolated nature inhibitors. The limitations of different computational methods for xanthine oxidase inhibition studies were also discussed. Implications of the computational approach could be used to help to understand the existing arguments on substrate/product orientation in xanthine oxidase inhibition, which allows designing new inhibitors with higher efficacy.
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Affiliation(s)
- Chao Dong
- Department of Chemistry, The University of Texas of the Permian Basin, Odessa, Texas 79762, USA
| | - Milka Montes
- Department of Chemistry, The University of Texas of the Permian Basin, Odessa, Texas 79762, USA
| | - Wael M. Al-Sawai
- Department of Mathematics & Physics, The University of Texas of the Permian Basin, Odessa, Texas 79762, USA
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50
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Mehmood A, Rehman AU, Ishaq M, Zhao L, Li J, Usman M, Zhao L, Rehman A, Zad OD, Wang C. In vitro and in silico Xanthine Oxidase Inhibitory Activity of Selected Phytochemicals Widely Present in Various Edible Plants. Comb Chem High Throughput Screen 2020; 23:917-930. [PMID: 32342806 DOI: 10.2174/1386207323666200428075224] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 11/22/2022]
Abstract
AIM AND OBJECTIVE The present study was designed to evaluate the xanthine oxidase (XO) inhibitory and antioxidant activities of 30 bioactive compounds present in edible food plants for the possible treatment of hyperuricemia. MATERIALS AND METHODS The XO inhibitory, SO and DPPH radical scavenging activities of selected dietary polyphenols were determined by using colorimetric assays. The molecular docking analysis was performed to evaluate the insight into inhibitory mode of action of bioactive compounds against XO. RESULTS The results show that apigenin, galangin, kaempferol, quercetin, genistein and resveratrol potently inhibit XO enzyme among all tested compounds. Flavonoids exhibit higher, anthocyanins and hydroxycinnamic acids moderate, maslinic acid, ellagic acid, salicylic acid, [6]-gingerol and flavan-3-ols showed weak XO inhibitory activity. The results of molecular docking study revealed that these bioactive compounds bind with the active site of XO and occupy the active site which further prevents the entrance of substrate and results in the inhibition of XO. CONCLUSION Inhibition of XO gives a robust biochemical basis for management of hyperuricemia, gout and other associated diseases via controlling uric acid synthesis.
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Affiliation(s)
- Arshad Mehmood
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Ashfaq Ur Rehman
- Department of Bioinformatics and Biostatistics, National Experimental Teaching Center for Life Science and Biotechnology, College of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Muhammad Ishaq
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Liang Zhao
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Jiayi Li
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Muhammad Usman
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Lei Zhao
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Abdur Rehman
- State Key Laboratory of Food Science, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Oumeddour D Zad
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Chengtao Wang
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
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