1
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Le TKD, Hioki Y, Duong TH, Kita M, Chavasiri W. Globunoids A-D, undescribed bichalconoid and biflavanoids with α-glucosidase and α-amylase inhibitory activities from Knema globularia stems. PHYTOCHEMISTRY 2024; 221:114066. [PMID: 38494085 DOI: 10.1016/j.phytochem.2024.114066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 03/11/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
A bichalconoid, globunoid A (1) and three biflavanones, globunoids B-D (2-4), previously undescribed, were isolated from the stems of Knema globularia, along with fourteen known analogues 5-18. The chemical structures of 1-4 were elucidated by the comprehensive spectroscopic analysis including UV, IR, HRESIMS, and NMR; the absolute configurations were determined based on their NOESY data, DP4+ statistical analysis, and ECD calculation. Up to now, compounds 2 and 3 represent the first 3,3″-linked biflavanone structures. Among the isolated compounds, 2, 3, and 2,3-dihydrocalodenin B (6) potently inhibited α-glucosidase and α-amylase activities, with IC50 values in the range 1.1-7.5 μM. Furthermore, the most active compound 6 was found to be a non-competitive inhibitor against these two enzymes.
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Affiliation(s)
- Thi-Kim-Dung Le
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Yusuke Hioki
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8601, Japan
| | - Thuc-Huy Duong
- Department of Chemistry, Ho Chi Minh City University of Education, 280 an Duong Vuong Street, District 5, Ho Chi Minh City, 748342, Viet Nam
| | - Masaki Kita
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8601, Japan
| | - Warinthorn Chavasiri
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand; Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Chulalongkorn University, Bangkok, 10330, Thailand.
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2
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Wang L, Ai C, Jin C, Mou J, Deng Y. Xanthones as potential α-glucosidase non-competition inhibitors: Synthesis, inhibitory activities, and in silico studies. Chem Biol Drug Des 2023; 102:547-556. [PMID: 37249098 DOI: 10.1111/cbdd.14272] [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: 02/23/2023] [Revised: 04/12/2023] [Accepted: 05/08/2023] [Indexed: 05/31/2023]
Abstract
α-glucosidase inhibitors (AGIs) were commonly used in clinical for the treatment of type 2 diabetes. Xanthones were naturally occurring antioxidants, and they may also be potential AGIs. In this study, eleven 1,6- and 1,3-substituted xanthone compounds were designed and synthesized, of which four were new compounds. Their α-glucosidase inhibitory activities in vitro and in silico were evaluated. Five xanthone compounds with higher activity than acarbose were screened out, and the xanthones substituted at the 1,6-positions were more likely to be potential α-glucosidase non-competitive inhibitors. The binding mode of xanthones with α-glucosidase was further studied by molecular docking method, and the results showed that the inhibitory effect of non-competitive inhibitors on site 1 of α-glucosidase may be related to the hydrogen bonds formed by the compounds with amino acid residues ASN165, HIS209, TRY207, ASP243, and SER104. This study provided a theoretical basis of the rapid discovery and structural modification of non-competitive xanthone inhibitors of α-glucosidase.
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Affiliation(s)
- Lili Wang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, P.R. China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin, China
| | - Chenyang Ai
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, P.R. China
| | - Chaoqun Jin
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, P.R. China
| | - Jiajia Mou
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, P.R. China
| | - Yanru Deng
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, P.R. China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin, China
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3
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Ruan Q, Chen Y, Wen J, Qiu Y, Huang Y, Zhang Y, Farag MA, Zhao C. Regulatory mechanisms of the edible alga Ulva lactuca polysaccharide via modulation of gut microbiota in diabetic mice. Food Chem 2023; 409:135287. [PMID: 36603475 DOI: 10.1016/j.foodchem.2022.135287] [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: 01/30/2022] [Revised: 10/19/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
In this study, Ulva lactuca polysaccharide (ULP) antihyperglycemic effect was assessed by monitoring changes in the gut microbiota of aging diabetic mice. The results showed that ULP alleviated type 2 diabetes by improving insulin tolerance, increasing SOD and CAT activities, and thus lowering blood glucose level. Moreover, ULP regulated the expressions of INSR and AMPK concurrent with inhibition the expression of JNK, JAK, STAT3, p16 and p38 to improve glucose metabolism dysfunction. Interestingly, the abundance of Alloprevotella and Pediococcus change might the key factor for ULP antihyperglycemic effectiveness in aging-related diabetes. These results suggest that ULP can exert a mechanism of blood glucose regulation by improving intestinal diversity composition asides from direct insulin mimetic actions.
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Affiliation(s)
- Qiling Ruan
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yihan Chen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jiahui Wen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yinghui Qiu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yajun Huang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yi Zhang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Mohamed A Farag
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Chao Zhao
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China; College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou, China; Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, China.
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4
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Lekshmi CL, Swathy US, Vijayan K, Simimole H, Sumalekshmy S. Graphene Quantum Dots Derived from Honey and Mangostin as Sustainable Materials to Construct Fluorescence Turn‐On Molecular Switches for Pesticide Detection. ChemistrySelect 2023. [DOI: 10.1002/slct.202204869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
| | | | - Keerthi Vijayan
- Post Graduate and Research Department of Chemistry T. K. M. College of Arts and Science Karicode Kollam Kerala India - 691005
| | - Haleema Simimole
- Post Graduate and Research Department of Chemistry T. K. M. College of Arts and Science Karicode Kollam Kerala India - 691005
| | - Sarojiniamma Sumalekshmy
- Post Graduate and Research Department of Chemistry T. K. M. College of Arts and Science Karicode Kollam Kerala India - 691005
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5
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Insights into the inhibitory activity and mechanism of action of flavonoids from the stems and branches of Acer mono Maxim. against α-glucosidase via kinetic analysis, molecular docking, and molecular dynamics simulations. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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6
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Triterpenoids from Kochiae Fructus: Glucose Uptake in 3T3-L1 Adipocytes and α-Glucosidase Inhibition, In Silico Molecular Docking. Int J Mol Sci 2023; 24:ijms24032454. [PMID: 36768777 PMCID: PMC9916857 DOI: 10.3390/ijms24032454] [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: 12/05/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 01/28/2023] Open
Abstract
In this study, three new triterpenes (1-3) and fourteen known triterpenoids (4-17) were isolated from the ethanol extract of Kochiae Fructus, and their structures were elucidated by analyzing UV, IR, HR-ESI-MS, 1D, and 2D NMR spectroscopic data. Among them, compounds 6, 8, and 11-17 were isolated for the first time from this plant. The screening results of the glucose uptake experiment indicated that compound 13 had a potent effect on glucose uptake in 3T3-L1 adipocytes at 20 μM. Meanwhile, compounds 3, 9 and 13 exhibited significant inhibitory activities against α-glucosidase, with IC50 values of 23.50 ± 3.37, 4.29 ± 0.52, and 16.99 ± 2.70 µM, respectively, and their α-glucosidase inhibitory activities were reported for the first time. According to the enzyme kinetics using Lineweaver-Burk and Dixon plots, we found that compounds 3, 9 and 13 were α-glucosidase mixed-type inhibitors with Ki values of 56.86 ± 1.23, 48.88 ± 0.07 and 13.63 ± 0.42 μM, respectively. In silico molecular docking analysis showed that compounds 3 and 13 possessed superior binding capacities with α-glucosidase (3A4A AutoDock score: -4.99 and -4.63 kcal/mol). Whereas compound 9 showed +2.74 kcal/mol, which indicated compound 9 exerted the effect of inhibiting α-glucosidase activity by preferentially binding to the enzyme-substrate complex. As a result, compounds 3, 9 and 13 could have therapeutic potentials for type 2 diabetes mellitus, due to their potent hypoglycemic activities.
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7
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An in vitro and in silico α-amylase/α-glucosidase/protein tyrosine phosphatase 1 beta & radical scavenging profiling of the 3,5,7-tricarbo substituted 1H-indazoles. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02972-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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Xanthone sulfonamide derivatives-A novel series of α-glucosidase inhibitors with different inhibitory types. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Dai L, Yan J, Xia Q, Wang S, Zhou Q, Zhang J, Wen C. Inhibition on α‐amylase and α‐glucosidase of polysaccharides from
Inonotus obliquus
and effects on delaying the digestion of polysaccharides‐dough system. STARCH-STARKE 2022. [DOI: 10.1002/star.202100300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Li‐jun Dai
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Jia‐xing Yan
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Qing Xia
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Shi‐qi Wang
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Qing Zhou
- Department of Pharmacy Wuhan City Central Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430014 China
| | - Jiu‐liang Zhang
- College of Food Science and Technology Huazhong Agricultural University Wuhan 430070 China
| | - Chong Wen
- Clinical College of Traditional Chinese Medicine Hubei University of Chinese Medicine Wuhan 430061 China
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10
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Bioactive Components from Ampelopsis japonica with Antioxidant, Anti-α-Glucosidase, and Antiacetylcholinesterase Activities. Antioxidants (Basel) 2022; 11:antiox11071228. [PMID: 35883719 PMCID: PMC9312113 DOI: 10.3390/antiox11071228] [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: 05/19/2022] [Revised: 06/08/2022] [Accepted: 06/20/2022] [Indexed: 02/01/2023] Open
Abstract
The dried root of Ampelopsis japonica (Thunb.) Makino (A. japonica.) is a traditional medicine used to treat fever, pain, and wound healing. It exhibits anti-inflammatory, antitumor, antityrosinase, and antimelanogenic activities. In this paper, we used different solvent extracts from the root of A. japonica to determine their antioxidant activity. Acetone extract showed relatively strong antioxidant properties by 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl (DPPH), superoxide radical scavenging activity, and ferric reducing antioxidant power (FRAP) assays. In addition, these extracts also showed significant α-glucosidase and acetylcholinesterase (AChE) inhibitory activities. Acetone extract significantly inhibited α-glucosidase with an IC50 value of 8.30 ± 0.78 μg/mL, and ethanol extract remarkably inhibited AChE with an IC50 value of 37.08 ± 7.67 μg/mL. Using HPLC analysis and comparison with the chemical composition of various solvent extracts, we isolated seven active compounds and assessed their antioxidant, anti-α-glucosidase, and anti-AChE activities. Catechin (1), gallic acid (2), kaempferol (3), quercetin (4), resveratrol (6), and epicatechin (7) were the main antioxidant components in the root of A. japonica. According to the results of DPPH, ABTS, and superoxide radical scavenging assays, these isolates showed stronger antioxidant capacity than butylated hydroxytoluene (BHT). Moreover, 1, 3, 4, euscaphic acid (5), 6, and 7 also expressed stronger anti-α-glucosidase activity than the positive control acarbose, and all the isolated compounds had a good inhibitory effect on AChE. Molecular docking models and hydrophilic interactive modes for AChE assays suggest that 1 and 5 exhibit unique anti-AChE potency. This study indicates that A. japonica and its active extracts and components may be a promising source of natural antioxidants, α-glucosidase, and AChE inhibitors.
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11
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Chu YC, Yang CS, Cheng MJ, Fu SL, Chen JJ. Comparison of Various Solvent Extracts and Major Bioactive Components from Unsalt-Fried and Salt-Fried Rhizomes of Anemarrhena asphodeloides for Antioxidant, Anti-α-Glucosidase, and Anti-Acetylcholinesterase Activities. Antioxidants (Basel) 2022; 11:antiox11020385. [PMID: 35204266 PMCID: PMC8868586 DOI: 10.3390/antiox11020385] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/07/2022] [Accepted: 02/12/2022] [Indexed: 02/01/2023] Open
Abstract
The rhizome of Anemarrhena asphodeloides Bunge (AA, family Liliaceae) is a famous and frequently used herbal drug in the traditional medicine of Northeast Asia, under vernacular name “zhimu”. A. asphodeloides has been used as an anti-inflammatory, antipyretic, anti-platelet aggregation, anti-depressant, and anti-diabetic agent in traditional Chinese medicine. We examined the antioxidant, anti-acetylcholinesterase (AChE), and anti-α-glucosidase activities of various solvent extracts and the main bioactive compounds from the rhizome of A. asphodeloides. Acetone extract exhibited comparatively high antioxidant activities by 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging, and ferric-reducing antioxidant power (FRAP) assays. A water extract exhibited relatively strong antioxidant activity by superoxide radical scavenging test. Furthermore, dichloromethane, chloroform, and n-hexane extracts showed significant anti-α-glucosidase activities. Finally, ethanol and dichloromethane extracts exhibited relatively strong AChE inhibitory activity. HPLC analysis was used to examine and compare various solvent extracts for their compositions of isolates. We isolated four major chemical constituents and analyzed their antioxidant, anti-α-glucosidase, and AChE inhibitory activities. The bioactivity assays showed that mangiferin displayed the most potential antioxidant activities via FRAP, ABTS, DPPH, and superoxide assays and also exhibited the most effective anti-AChE and anti-α-glucosidase activities among all the isolates. The present study suggests that A. asphodeloides and its active extracts and components are worth further investigation and might be expected to develop as a candidate for the treatment or prevention of oxidative stress-related diseases, AChE inhibition, and hyperglycemia.
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Affiliation(s)
- Yi-Cheng Chu
- Institute of Traditional Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
| | - Chang-Syun Yang
- Department of Pharmacy, School of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
| | - Ming-Jen Cheng
- Bioresource Collection and Research Center (BCRC), Food Industry Research and Development Institute (FIRDI), Hsinchu 300, Taiwan;
| | - Shu-Ling Fu
- Institute of Traditional Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
- Correspondence: (S.-L.F.); (J.-J.C.); Tel.: +886-2-2826-7177 (S.-L.F.); +886-2-2826-7195 (J.-J.C.); Fax: +886-2-2822-5044 (S.-L.F.); +886-2-2823-2940 (J.-J.C.)
| | - Jih-Jung Chen
- Institute of Traditional Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
- Department of Pharmacy, School of Pharmaceutical Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan;
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Correspondence: (S.-L.F.); (J.-J.C.); Tel.: +886-2-2826-7177 (S.-L.F.); +886-2-2826-7195 (J.-J.C.); Fax: +886-2-2822-5044 (S.-L.F.); +886-2-2823-2940 (J.-J.C.)
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12
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Ghani U, Ashraf S, Haq ZU, Kaplancikli ZA, Demirci F, Özkay Y, Afzal S. Thiazole inhibitors of α-glucosidase: positional isomerism modulates selectivity, enzyme binding and potency of inhibition. Comput Biol Chem 2022; 98:107647. [DOI: 10.1016/j.compbiolchem.2022.107647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/21/2022] [Accepted: 02/23/2022] [Indexed: 11/26/2022]
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13
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Binding analysis of the curcumin-based synthetic alpha-glucosidase inhibitors to beta-lactoglobulin as potential vehicle carrier for antidiabetic drugs. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-021-02323-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Ahmadi S, Moradi Z, Kumar A, Almasirad A. SMILES-based QSAR and molecular docking study of xanthone derivatives as α-glucosidase inhibitors. J Recept Signal Transduct Res 2021; 42:361-372. [PMID: 34384326 DOI: 10.1080/10799893.2021.1957932] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Increasing diabetic population is one of the major health concerns all over the world. Inhibition of α-glucosidase is a clinically proved and attractive strategy to manage diabetes. In this study, robust and reliable QSAR models to predict α-glucosidase inhibitory potential of xanthone derivatives are developed by the Monte Carlo technique. The chemical structures are represented by SMILES notation without any 3D-optimization. The significance of the index of ideality correlation (IIC) with applicability domain (AD) is also studied in depth. The models developed using CORAL software by considering IIC criteria are found to be statistically more significant and robust than simple balance of correlation. The QSAR models are validated by both internal and external validation methods. The promoters of increase and decrease of activity are also extracted and interpreted in detail. The interpretation of developed models explains the role of different structural attributes in predicting the pIC50 of xanthone derivatives as α-glucosidase inhibitors. Based on the results of model interpretation, modifications are done on some xanthone derivatives and 15 new molecules are designed. The α-glucosidase inhibitory activity of novel molecules is further supported by docking studies.
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Affiliation(s)
- Shahin Ahmadi
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Zohreh Moradi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Ashwani Kumar
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, India
| | - Ali Almasirad
- Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
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15
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Ghani U, Ashraf S, Ul-Haq Z, Mujamammi AH, Özkay Y, Demirci F, Kaplancikli ZA. Dithiocarbamate derivatives inhibit α-glucosidase through an apparent allosteric site on the enzyme. Chem Biol Drug Des 2021; 98:283-294. [PMID: 34047492 DOI: 10.1111/cbdd.13897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/04/2021] [Accepted: 05/23/2021] [Indexed: 11/29/2022]
Abstract
Dithiocarbamate derivatives possess diverse biological activities. This work further expands their activity profile by identifying seven benzylamine-containing dithiocarbamate derivatives with piperazine and piperidine substitutions at the main moiety, and five piperazine-containing dithiocarbamates with various substitutions at the piperazine moiety as new inhibitors of α-glucosidase. Compounds bearing the benzylamine moiety exhibited more potent inhibition of the enzyme than the piperazine derivatives. Majority of the compounds non-competitively inhibited α-glucosidase that led to the identification of a new allosteric site on the enzyme with the help of molecular dynamics and docking studies. These studies suggest that the compounds regulate inhibition of the enzyme by binding to an allosteric site that is located in the vicinity of the active site. This is the first report on the allosteric inhibition of α-glucosidase by dithiocarbamate derivatives that provides insights into the mechanism of inhibition of the enzyme at molecular level. Moreover, it also explores new avenues for drug development of α-glucosidase inhibitors as antidiabetic drugs.
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Affiliation(s)
- Usman Ghani
- Clinical Biochemistry Unit, Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Sajda Ashraf
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Zaheer Ul-Haq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan
| | - Ahmed H Mujamammi
- Clinical Biochemistry Unit, Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Yusuf Özkay
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Fatih Demirci
- Department of Pharmacognosy, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey.,Faculty of Pharmacy, Eastern Mediterranean University, Mersin, Turkey
| | - Zafer Asim Kaplancikli
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
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16
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Lee HA, Kim MJ, Han JS. Alleviating effects of lupeol on postprandial hyperglycemia in diabetic mice. Toxicol Res (Camb) 2021; 10:495-500. [PMID: 34141163 DOI: 10.1093/toxres/tfab019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/09/2020] [Accepted: 02/16/2021] [Indexed: 11/13/2022] Open
Abstract
This study aimed to investigate the inhibition activities of lupeol on carbohydrate digesting enzymes and its ability to improve postprandial hyperglycemia in streptozotocin (STZ)-induced diabetic mice. α-Glucosidase and α-amylase inhibitory assays were executed using a chromogenic method. The effect of lupeol on hyperglycemia after a meal was measured by postprandial blood glucose in STZ-induced diabetic and normal mice. The mice were treated orally with soluble starch (2 g/kg BW) alone (control) or with lupeol (10 mg/kg BW) or acarbose (10 mg/kg BW) dissolved in water. Blood samples were taken from tail veins at 0, 30, 60, and 120 min and blood glucose was measured by a glucometer. Lupeol showed noticeable inhibitory activities on α-glucosidase and α-amylase. The half-maximal inhibitory concentrations (IC50) of lupeol on α-glucosidase and α-amylase were 46.23 ± 9.03 and 84.13 ± 6.82 μM, respectively, which were more significantly effective than those of acarbose, which is a positive control. Increase in postprandial blood glucose level was more significantly lowered in the lupeol-administered group than in the control group of both STZ-induced diabetic and normal mice. In addition, the area under the curve was significantly declined with lupeol administration in the STZ-induced diabetic mice. These findings suggest that lupeol can help lower the postprandial hyperglycemia by inhibiting carbohydrate-digesting enzymes.
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Affiliation(s)
- Hyun-Ah Lee
- Department of Food Science and Nutrition, Pusan National University, Busan 46241, Republic of Korea
| | - Min-Jung Kim
- Department of Food Science and Nutrition, Pusan National University, Busan 46241, Republic of Korea
| | - Ji-Sook Han
- Department of Food Science and Nutrition, Pusan National University, Busan 46241, Republic of Korea
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17
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Ur Rehman N, Halim SA, Al-Azri M, Khan M, Khan A, Rafiq K, Al-Rawahi A, Csuk R, Al-Harrasi A. Triterpenic Acids as Non-Competitive α-Glucosidase Inhibitors from Boswellia elongata with Structure-Activity Relationship: In Vitro and In Silico Studies. Biomolecules 2020; 10:biom10050751. [PMID: 32408614 PMCID: PMC7278020 DOI: 10.3390/biom10050751] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 01/02/2023] Open
Abstract
Fourteen triterpene acids, viz., three tirucallane-type (1-3), eight ursane-type (4-11), two oleanane-type (12, 13) and one lupane type (21), along with boswellic aldehyde (14), α-amyrine (15), epi-amyrine (16), straight chain acid (17), sesquiterpene (19) and two cembrane-type diterpenes (18, 20) were isolated, first time, from the methanol extract of Boswellia elongata resin. Compound (1) was isolated for first time as a natural product, while the remaining compounds (2‒21) were reported for first time from B. elongata. The structures of all compounds were confirmed by advanced spectroscopic techniques including mass spectrometry and also by comparison with the reported literature. Eight compounds (1-5, 11, 19 and 20) were further screened for in vitro α-glucosidase inhibitory activity. Compounds 3-5 and 11 showed significant activity against α-glucosidase with IC50 values ranging from 9.9-56.8 μM. Compound 4 (IC50 = 9.9 ± 0.48 μM) demonstrated higher inhibition followed by 11 (IC50 = 14.9 ± 1.31 μM), 5 (IC50 = 20.9 ± 0.05 μM) and 3 (IC50 = 56.8 ± 1.30 μM), indicating that carboxylic acid play a key role in α-glucosidase inhibition. Kinetics studies on the active compounds 3-5 and 11 were carried out to investigate their mechanism (mode of inhibition and dissociation constants Ki). All compounds were found to be non-competitive inhibitors with Ki values in the range of 7.05 ± 0.17-51.15 ± 0.25 µM. Moreover, in silico docking was performed to search the allosteric hotspot for ligand binding which is targeted by our active compounds investigates the binding mode of active compounds and it was identified that compounds preferentially bind in the allosteric binding sites of α-glucosidase. The results obtained from docking study suggested that the carboxylic group is responsible for their biologic activities. Furthermore, the α-glucosidase inhibitory potential of the active compounds is reported here for the first time.
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Affiliation(s)
- Najeeb Ur Rehman
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (N.U.R.); (S.A.H.); (M.A.-A.); (M.K.); (A.K.); (K.R.); (A.A.-R.)
| | - Sobia Ahsan Halim
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (N.U.R.); (S.A.H.); (M.A.-A.); (M.K.); (A.K.); (K.R.); (A.A.-R.)
| | - Mohammed Al-Azri
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (N.U.R.); (S.A.H.); (M.A.-A.); (M.K.); (A.K.); (K.R.); (A.A.-R.)
| | - Majid Khan
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (N.U.R.); (S.A.H.); (M.A.-A.); (M.K.); (A.K.); (K.R.); (A.A.-R.)
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan
| | - Ajmal Khan
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (N.U.R.); (S.A.H.); (M.A.-A.); (M.K.); (A.K.); (K.R.); (A.A.-R.)
| | - Kashif Rafiq
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (N.U.R.); (S.A.H.); (M.A.-A.); (M.K.); (A.K.); (K.R.); (A.A.-R.)
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Ahmed Al-Rawahi
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (N.U.R.); (S.A.H.); (M.A.-A.); (M.K.); (A.K.); (K.R.); (A.A.-R.)
| | - Rene Csuk
- Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany;
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Center, University of Nizwa, P.O Box 33, Birkat Al Mauz, Nizwa 616, Oman; (N.U.R.); (S.A.H.); (M.A.-A.); (M.K.); (A.K.); (K.R.); (A.A.-R.)
- Correspondence: ; Tel.: +968-25446328
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Mphahlele MJ, Magwaza NM, Gildenhuys S, Setshedi IB. Synthesis, α-glucosidase inhibition and antioxidant activity of the 7-carbo–substituted 5-bromo-3-methylindazoles. Bioorg Chem 2020; 97:103702. [DOI: 10.1016/j.bioorg.2020.103702] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 02/08/2023]
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19
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Malik A, Ardalani H, Anam S, McNair LM, Kromphardt KJ, Frandsen RJN, Franzyk H, Staerk D, Kongstad KT. Antidiabetic xanthones with α-glucosidase inhibitory activities from an endophytic Penicillium canescens. Fitoterapia 2020; 142:104522. [DOI: 10.1016/j.fitote.2020.104522] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/17/2020] [Accepted: 02/19/2020] [Indexed: 10/25/2022]
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20
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Jenis J, Baiseitova A, Yoon SH, Park C, Kim JY, Li ZP, Lee KW, Park KH. Competitive α-glucosidase inhibitors, dihydrobenzoxanthones, from the barks of Artocarpus elasticus. J Enzyme Inhib Med Chem 2020; 34:1623-1632. [PMID: 31480857 PMCID: PMC6735331 DOI: 10.1080/14756366.2019.1660653] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This study aimed to search the α-glucosidase inhibitors from the barks part of
Artocarpus elasticus. The responsible compounds for α-glucosidase
inhibition were found out as dihydrobenzoxanthones (1–4) and
alkylated flavones (5–6). All compounds showed a significant
enzyme inhibition toward α-glucosidase with IC50s of 7.6–25.4 μM.
Dihydrobenzoxanthones (1–4) exhibited a competitive inhibition
to α-glucosidase. This competitive behaviour was fully characterised by double reciprocal
plots, Yang’s method, and time-dependent experiments. The compound 1
manifested as the competitive and reversible simple slow-binding, with kinetic parameters
k3 = 0.0437 µM−1 min−1,
k4 = 0.0166 min−1, and Kiapp=
0.3795 µM. Alkylated flavones (5–6) were mixed type I
(KI < KIS) inhibitors. The
binding affinities (KSV) represented by all inhibitors were
correlated to their concentrations and inhibitory potencies (IC50). Moreover,
compounds 1 and 5 were identified as new ones named as
artoindonesianin W and artoflavone B, respectively. Molecular modelling study proposed the
putative binding conformation of competitive inhibitors (1–4) to
α-glucosidase at the atomic level.
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Affiliation(s)
- Janar Jenis
- Research Center for Medicinal Plants, Al-Farabi Kazakh National University , Almaty , Kazakhstan
| | - Aizhamal Baiseitova
- Division of Applied Life Science (BK21 plus), IALS, Gyeongsang National University , Jinju , Republic of Korea
| | - Sang Hwa Yoon
- Division of Applied Life Science (BK21 plus), PMBBRC, RINS, Gyeongsang National University , Jinju , Republic of Korea
| | - Chanin Park
- Division of Applied Life Science (BK21 plus), PMBBRC, RINS, Gyeongsang National University , Jinju , Republic of Korea
| | - Jeong Yoon Kim
- Division of Applied Life Science (BK21 plus), IALS, Gyeongsang National University , Jinju , Republic of Korea
| | - Zuo Peng Li
- Division of Applied Life Science (BK21 plus), IALS, Gyeongsang National University , Jinju , Republic of Korea
| | - Keun Woo Lee
- Division of Applied Life Science (BK21 plus), PMBBRC, RINS, Gyeongsang National University , Jinju , Republic of Korea
| | - Ki Hun Park
- Division of Applied Life Science (BK21 plus), IALS, Gyeongsang National University , Jinju , Republic of Korea
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21
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22
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Deng ZT, Chen JJ, Geng CA. ent-Labdane and ent-kaurane diterpenoids from Chelonopsis odontochila with α-glucosidase inhibitory activity. Bioorg Chem 2020; 95:103571. [DOI: 10.1016/j.bioorg.2020.103571] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/18/2019] [Accepted: 01/03/2020] [Indexed: 11/24/2022]
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23
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Son HU, Yoon EK, Yoo CY, Park CH, Bae MA, Kim TH, Lee CH, Lee KW, Seo H, Kim KJ, Lee SH. Effects of Synergistic Inhibition on α-glucosidase by Phytoalexins in Soybeans. Biomolecules 2019; 9:E828. [PMID: 31817312 PMCID: PMC6995600 DOI: 10.3390/biom9120828] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 11/16/2022] Open
Abstract
To determine the mechanism of action of the effects of phytoalexins in soybeans, we analyzed α-glucosidase inhibition kinetics using Michaelis-Menten plots and Lineweaver-Burk plots. The results showed that the type of inhibition with glyceollin was competitive, that of genistein was noncompetitive, that of daidzein was uncompetitive, and luteolin showed a mixed mode of action. The Ki values were determined using a Dixon plot as glyceollin, 18.99 μM; genistein, 15.42 μM; luteolin, 16.81 μM; and daidzein, 9.99 μM. Furthermore, potential synergistic effects between glyceollin and the three polyphenols were investigated. A combination of glyceollin and luteolin at a ratio of 3:7 exhibited synergistic effects on α-glucosidase inhibition, having a combination index (CI) of 0.64244, according to the CI-isobologram equation. Collectively, these results showed that a combination of glyceollin and luteolin has the potential to inhibit α-glucosidase activity via a synergistic mode of inhibition.
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Affiliation(s)
- Hyeong-U Son
- School of Food Science & Biotechnology, Graduate School, Kyungpook National University, Daegu 41566, Korea; (H.-U.S.); (E.-K.Y.); (C.-Y.Y.)
| | - Eun-Kyeong Yoon
- School of Food Science & Biotechnology, Graduate School, Kyungpook National University, Daegu 41566, Korea; (H.-U.S.); (E.-K.Y.); (C.-Y.Y.)
| | - Chi-Yeol Yoo
- School of Food Science & Biotechnology, Graduate School, Kyungpook National University, Daegu 41566, Korea; (H.-U.S.); (E.-K.Y.); (C.-Y.Y.)
| | - Chul-Hong Park
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA 70808, USA;
| | - Myung-Ae Bae
- Korea Research Institute of Chemical Technology, Daejeon 34114, Korea;
| | - Tae-Ho Kim
- Biomedical Research Institute, Kyungpook National University Hospital, Daegu 41940, Korea;
| | - Chang Hyung Lee
- Major in Biomodulation, Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (C.H.L.); (K.W.L.)
| | - Ki Won Lee
- Major in Biomodulation, Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea; (C.H.L.); (K.W.L.)
| | - Hogyun Seo
- School of Life Sciences, KNU Creative BioResearch Group, Institute of Microorganisms, Kyungpook National University, Daegu 41566, Korea; (H.S.); (K.-J.K.)
| | - Kyung-Jin Kim
- School of Life Sciences, KNU Creative BioResearch Group, Institute of Microorganisms, Kyungpook National University, Daegu 41566, Korea; (H.S.); (K.-J.K.)
| | - Sang-Han Lee
- School of Food Science & Biotechnology, Graduate School, Kyungpook National University, Daegu 41566, Korea; (H.-U.S.); (E.-K.Y.); (C.-Y.Y.)
- knu BnC, Daegu 41566, Korea
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24
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Septiana I, Nguyen TTH, Lim S, Lee S, Park B, Kwak S, Park S, Kim SB, Kim D. Enzymatic synthesis and biological characterization of a novel mangiferin glucoside. Enzyme Microb Technol 2019; 134:109479. [PMID: 32044026 DOI: 10.1016/j.enzmictec.2019.109479] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/31/2019] [Accepted: 11/21/2019] [Indexed: 01/31/2023]
Abstract
Mangiferin, a major constituent of Mangifera indica L., has attracted substantial attention due to its anti-oxidant, anti-diabetic, anti-inflammatory, and anti-microbial activities. However, its poor solubility in water limits its use in food and pharmaceutical industries. In this study, novel mangiferin-(1→6)-α-d-glucopyranoside (Mg-G1) was enzymatically synthesized from mangiferin and sucrose using glucansucrase from Leuconostoc mesenteroides B-512F/KM, and optimized using response surface methodology. The water solubility of Mg-G1 was found to be 824.7 mM, which is more than 2300-fold higher than that of mangiferin. Mg-G1 also showed DPPH radical scavenging activity and superoxide dismutase (SOD)-like scavenging activity, which were 4.77- and 3.71-fold higher than that of mangiferin, respectively. Mg-G1 displayed inhibitory activity against human intestinal maltase and COX-2. Thus, the novel glucosylated mangiferin may be used as an ingredient in functional food and pharmaceutical application.
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Affiliation(s)
- Iis Septiana
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea
| | - Thi Thanh Hanh Nguyen
- Institute of Food Industrialization, Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea
| | - Sangyong Lim
- Radiation Research Division, Korea Atomic Energy Research Institute, Jeongeup, 56212, Republic of Korea
| | - Seonmin Lee
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea
| | - Byeongsu Park
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea
| | - Sohyung Kwak
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea
| | - Sunghee Park
- CJ CheilJedang, Bio Research Institute, Suwon, 16495, Republic of Korea
| | - Seong-Bo Kim
- CJ CheilJedang, Bio Research Institute, Suwon, 16495, Republic of Korea
| | - Doman Kim
- Graduate School of International Agricultural Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea; Institute of Food Industrialization, Institutes of Green Bio Science & Technology, Seoul National University, Pyeongchang-gun, Gangwon-do, 25354, Republic of Korea.
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25
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Yu L, Chen L, Luo G, Liu L, Zhu W, Yan P, Zhang P, Zhang C, Wu W. Study on Synthesis and Biological Evaluation of 3-Aryl Substituted Xanthone Derivatives as Novel and Potent Tyrosinase Inhibitors. Chem Pharm Bull (Tokyo) 2019; 67:1232-1241. [DOI: 10.1248/cpb.c19-00572] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Lihong Yu
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University
| | - Liandi Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University
- The Third Affiliated Hospital of Guangzhou Medical University
| | - Guolin Luo
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University
| | - Licai Liu
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University
| | - Wenqi Zhu
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University
| | - Pengke Yan
- The Third Affiliated Hospital of Guangzhou Medical University
| | - Peiquan Zhang
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University
| | - Chao Zhang
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University
| | - Wenhao Wu
- Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University
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26
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Antioxidant Nature Adds Further Therapeutic Value: An Updated Review on Natural Xanthones and Their Glycosides. DIGITAL CHINESE MEDICINE 2019. [DOI: 10.1016/j.dcmed.2019.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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27
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Xie F, Zhang W, Gong S, Gu X, Lan X, Wu J, Wang Z. Investigating lignin from Canna edulis ker residues induced activation of α-amylase: Kinetics, interaction, and molecular docking. Food Chem 2019; 271:62-69. [DOI: 10.1016/j.foodchem.2018.07.153] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/20/2018] [Accepted: 07/24/2018] [Indexed: 02/06/2023]
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28
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Synthesis, in vitro and in vivo evaluation of 2-aryl-4H-chromene and 3-aryl-1H-benzo[f]chromene derivatives as novel α-glucosidase inhibitors. Bioorg Med Chem Lett 2019; 29:119-123. [DOI: 10.1016/j.bmcl.2018.10.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 10/07/2018] [Accepted: 10/12/2018] [Indexed: 01/10/2023]
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29
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Santos CMM, Freitas M, Fernandes E. A comprehensive review on xanthone derivatives as α-glucosidase inhibitors. Eur J Med Chem 2018; 157:1460-1479. [PMID: 30282319 DOI: 10.1016/j.ejmech.2018.07.073] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 07/20/2018] [Accepted: 07/30/2018] [Indexed: 12/30/2022]
Abstract
α-Glucosidase plays an important role in carbohydrate metabolism and is therefore an attractive therapeutic target for the treatment of diabetes, obesity and other related complications. In the last two decades, considerable interest has been given to natural and synthetic xanthone derivatives in this field of research. Herein, a comprehensive review of the literature on xanthones as inhibitors of α-glucosidase activity, their mechanism of action, experimental procedures and structure-activity relationships have been reviewed for more than 280 analogs. With this overview we intend to motivate and challenge researchers (e.g. chemistry, biology, pharmaceutical and medicinal areas) for the design of novel xanthones as multipotent drugs and exploit the properties of this class of compounds in the management of diabetic complications.
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Affiliation(s)
- Clementina M M Santos
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal; Department of Chemistry, QOPNA &University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.
| | - Marisa Freitas
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
| | - Eduarda Fernandes
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.
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30
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Mostafavi N, Ebrahimi A. The role of chlorine substituents in lichexanthones properties: the ionic and halogen bond interactions. Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2294-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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31
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Smilax aristolochiifolia Root Extract and Its Compounds Chlorogenic Acid and Astilbin Inhibit the Activity of α-Amylase and α-Glucosidase Enzymes. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:6247306. [PMID: 30046343 PMCID: PMC6036819 DOI: 10.1155/2018/6247306] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/12/2018] [Accepted: 04/23/2018] [Indexed: 12/24/2022]
Abstract
Regulating activities of α-amylase and α-glucosidase through the use of specific inhibitors is a main strategy for controlling type 2 diabetes. Smilax aristolochiifolia root decoctions are traditionally used in Mexico as hypoglycemic and for weight loss, but the active principles and mechanisms underlying such putative metabolic effects are yet unknown. Here, we isolated the major bioactive compounds from a hydroethanolic extract of S. aristolochiifolia root by fast centrifugal partition chromatography and evaluated their effects against pancreatic α-amylase and yeast α-glucosidase. A chlorogenic acid-rich fraction (CAF) inhibited α-amylase activity with an IC50 value of 59.28 μg/mL in an uncompetitive manner and α-glucosidase activity with an IC50 value of 9.27 μg/mL in a noncompetitive mode. Also, an astilbin-rich fraction (ABF) inhibited α-glucosidase activity with an IC50 value of 12.30 μg/mL, in a noncompetitive manner. CAF inhibition α-amylase was as active as acarbose while both CAF and ABF were 50-fold more potent inhibitors of α-glucosidase than acarbose. The molecular docking results of chlorogenic acid and astilbin with α-amylase and α-glucosidase enzymes correlated with the inhibition mechanisms suggested by enzymatic assays. Our results prove that S. aristolochiifolia roots contain chlorogenic acid and astilbin, which inhibit carbohydrates-hydrolyzing enzymes, suggesting a new mechanism for the hypoglycemic effect reported for this plant.
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32
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Ding SM, Lan T, Ye GJ, Huang JJ, Hu Y, Zhu YR, Wang B. Novel oxazolxanthone derivatives as a new type of α-glucosidase inhibitor: synthesis, activities, inhibitory modes and synergetic effect. Bioorg Med Chem 2018; 26:3370-3378. [PMID: 29776833 DOI: 10.1016/j.bmc.2018.05.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/03/2018] [Accepted: 05/05/2018] [Indexed: 01/05/2023]
Abstract
Xanthone derivatives have shown good α-glucosidase inhibitory activity and have drawn increased attention as potential anti-diabetic compounds. In this study, a series of novel oxazolxanthones were designed, synthesized, and investigated as α-glucosidase inhibitors. Inhibition assays indicated that compounds 4-21 bearing oxazole rings exhibited up to 30-fold greater inhibitory activity compared to their corresponding parent compound 1b. Among them, compounds 5-21 (IC50 = 6.3 ± 0.4-38.5 ± 4.6 μM) were more active than 1-deoxynojirimycin (IC50 = 60.2 ± 6.2 μM), a well-known α-glucosidase inhibitor. In addition, the kinetics of enzyme inhibition measured by using Lineweaver-Burk analysis shows that compound 4 is a competitive inhibitor, while compounds 15, 16 and 20 are non-competitive inhibitors. Molecular docking studies showed that compound 4 bound to the active site pocket of the enzyme while compounds 15, 16, and 20 did not. More interestingly, docking simulations reveal that some of the oxazolxanthone derivatives bind to different sites in the enzyme. This prediction was further confirmed by the synergetic inhibition experiment, and the combination of representative compounds 16 and 20 at the optimal ratio of 4:6 led to an IC50 value of 1.9 ± 0.7 μM, better than the IC50 value of 7.1 ± 0.9 μM for compound 16 and 8.6 ± 0.9 μM for compound 20.
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Affiliation(s)
- Sen-Miao Ding
- School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Tian Lan
- School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Gao-Jie Ye
- School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Jia-Jun Huang
- School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - You Hu
- School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Yi-Ran Zhu
- School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou 510275, PR China
| | - Bo Wang
- School of Chemistry, Sun Yat-sen University, 135 Xingang West Road, Guangzhou 510275, PR China.
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33
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Ding H, Hu X, Xu X, Zhang G, Gong D. Inhibitory mechanism of two allosteric inhibitors, oleanolic acid and ursolic acid on α-glucosidase. Int J Biol Macromol 2018; 107:1844-1855. [PMID: 29030193 DOI: 10.1016/j.ijbiomac.2017.10.040] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 09/19/2017] [Accepted: 10/09/2017] [Indexed: 11/28/2022]
Abstract
Glycemic control which can be efficaciously regulated by inhibiting α-glucosidase activity is an effective therapy for diabetes mellitus. This work is to investigate the kinetics and inhibition mechanism of oleanolic acid and ursolic acid on α-glucosidase. Oleanolic acid and ursolic acid exhibited potent inhibitory activities with IC50 values of (6.35±0.02)×10-6 and (1.69±0.03)×10-5molL-1 respectively in a reversible and non-competitive manner. Both of them binding to α-glucosidase induced the conformational change and intrinsic fluorescence quenching of α-glucosidase. The binding constants of oleanolic acid and ursolic acid with α-glucosidase at 298K were (2.04±0.02)×103 and (1.87±0.02)×103Lmol-1, respectively. Docking results showed that oleanolic acid and ursolic acid bound in different allosteric sites of cavity 2 and cavity 4 on α-glucosidase, respectively, which triggered allosteric regulation to perturb conformational dynamics of α-glucosidase, eventually leading to a decrease of catalytic activity of the enzyme. The substrate was not catalyzed by α-glucosidase to generate further products due to formation of a nonreactive ternary complex of oleanolic acid- or ursolic acid-α-glucosidase-substrate. The combination of oleanolic acid and ursolic acid displayed a significant synergistic inhibition on α-glucosidase.
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Affiliation(s)
- Huafang Ding
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Ximing Xu
- Institute of Bioinformatics and Medical Engineering, School of Electrical and Info- rmation Engineering, Jiangsu University of Technology, Changzhou 213001, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Deming Gong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; New Zealand Institute of Natural Medicine Research, 8 Ha Crescent, Auckland 2104, New Zealand
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Chen X, Leng J, Rakesh KP, Darshini N, Shubhavathi T, Vivek HK, Mallesha N, Qin HL. Synthesis and molecular docking studies of xanthone attached amino acids as potential antimicrobial and anti-inflammatory agents. MEDCHEMCOMM 2017; 8:1706-1719. [PMID: 30108882 PMCID: PMC6071936 DOI: 10.1039/c7md00209b] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 07/05/2017] [Indexed: 01/24/2023]
Abstract
A series of novel xanthone conjugated amino acids were synthesised and characterised by analytical and spectroscopic methods. All the synthesized analogues (2-23) were screened for their in vitro antimicrobial and anti-inflammatory activities. Compounds 7, 8, 9, 12, 18, 19, 20, 21 and 23 showed excellent antimicrobial activities compared to antibacterial and antifungal reference drugs gentamicin and bavistin, respectively. Compounds 7-12 and 18-23 showed good anti-inflammatory activity compared to a standard drug, indomethacin. The preliminary structure-activity relationship revealed that tryptophan, tyrosine, phenylalanine, proline and cysteine conjugated compounds showed excellent antimicrobial and anti-inflammatory activities. This may be explained by the contribution of aromaticity and hydrophobicity of amino acids. Molecular docking studies were performed for all the synthesised compounds, among which compounds 20, 21 and 23 showed the highest docking scores for antimicrobial activity while compounds 9, 20 and 22 showed the highest docking scores for anti-inflammatory activity. Different amino acids conjugated xanthone derivatives were synthesized and evaluated for their in vitro biological activities. The conjugation was found to play a major role in improving the biological activities of those compounds.
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Affiliation(s)
- Xing Chen
- Department of Pharmaceutical Engineering, School of Chemistry , Chemical Engineering and Life Science , Wuhan University of Technology , 205 Luoshi Road , Wuhan , 430073 , PR China . ;
| | - Jing Leng
- Department of Pharmaceutical Engineering, School of Chemistry , Chemical Engineering and Life Science , Wuhan University of Technology , 205 Luoshi Road , Wuhan , 430073 , PR China . ;
| | - K P Rakesh
- Department of Pharmaceutical Engineering, School of Chemistry , Chemical Engineering and Life Science , Wuhan University of Technology , 205 Luoshi Road , Wuhan , 430073 , PR China . ;
- SRI RAM CHEM, R & D Centre , Plot No. 31, JCK Industrial Park, Belagola Industrial Area , Mysore 570016 , Karnataka , India . ; Tel: +91 821 4255588
| | - N Darshini
- SRI RAM CHEM, R & D Centre , Plot No. 31, JCK Industrial Park, Belagola Industrial Area , Mysore 570016 , Karnataka , India . ; Tel: +91 821 4255588
| | - T Shubhavathi
- SRI RAM CHEM, R & D Centre , Plot No. 31, JCK Industrial Park, Belagola Industrial Area , Mysore 570016 , Karnataka , India . ; Tel: +91 821 4255588
| | - H K Vivek
- Department of Biotechnology , Sri Jayachamarajendra College of Engineering , Mysore-570006 , Karnataka , India
| | - N Mallesha
- SRI RAM CHEM, R & D Centre , Plot No. 31, JCK Industrial Park, Belagola Industrial Area , Mysore 570016 , Karnataka , India . ; Tel: +91 821 4255588
| | - Hua-Li Qin
- Department of Pharmaceutical Engineering, School of Chemistry , Chemical Engineering and Life Science , Wuhan University of Technology , 205 Luoshi Road , Wuhan , 430073 , PR China . ;
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In Vitro and In Vivo Effects of Norathyriol and Mangiferin on α-Glucosidase. Biochem Res Int 2017; 2017:1206015. [PMID: 28168055 PMCID: PMC5259675 DOI: 10.1155/2017/1206015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 11/14/2016] [Indexed: 11/18/2022] Open
Abstract
Norathyriol is a metabolite of mangiferin. Mangiferin has been reported to inhibit α-glucosidase. To the best of our knowledge, no study has been conducted to determine or compare those two compounds on inhibiting α-glucosidase in vitro and in vivo by far. In this study, we determined the inhibitory activity of norathyriol and mangiferin on α-glucosidase in vitro and evaluated their antidiabetic effect in diabetic mice. The results showed that norathyriol inhibited α-glucosidase in a noncompetitive manner with an IC50 value of 3.12 μM, which is more potent than mangiferin (IC50 = 358.54 μM) and positive drug acarbose (IC50 = 479.2 μM) in the zymological experiment. Both of norathyriol and mangiferin caused significant (p < 0.05) reduction in fasting blood glucose and the blood glucose levels at two hours after carbohydrate loading and it was interesting that mangiferin and norathyriol can make the decline of the blood glucose earlier than other groups ever including normal group in the starch tolerance test. However, norathyriol and mangiferin did not significantly influence carbohydrate absorption in the glucose tolerance test. Therefore, the antidiabetic effects of norathyriol and mangiferin might be associated with α-glucosidase, and norathyriol was more potent than mangiferin.
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Shagufta, Ahmad I. Recent insight into the biological activities of synthetic xanthone derivatives. Eur J Med Chem 2016; 116:267-280. [DOI: 10.1016/j.ejmech.2016.03.058] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 03/19/2016] [Accepted: 03/21/2016] [Indexed: 12/24/2022]
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Synthesis of 3-acyloxyxanthone derivatives as α-glucosidase inhibitors: A further insight into the 3-substituents’ effect. Bioorg Med Chem 2016; 24:1431-8. [DOI: 10.1016/j.bmc.2016.01.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/13/2016] [Accepted: 01/13/2016] [Indexed: 01/27/2023]
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38
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Zheng JW, Ma L. Assessment of silver(I) complexes of salicylaldehyde derivatives—histidine Schiff base as novel α -glucosidase inhibitors. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2015.11.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Synthesis of novel inhibitors of α-glucosidase based on the benzothiazole skeleton containing benzohydrazide moiety and their molecular docking studies. Eur J Med Chem 2015; 92:387-400. [DOI: 10.1016/j.ejmech.2015.01.009] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 11/28/2014] [Accepted: 01/06/2015] [Indexed: 11/23/2022]
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40
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Ma H, Wang L, Niesen DB, Cai A, Cho BP, Tan W, Gu Q, Xu J, Seeram NP. Structure Activity Related, Mechanistic, and Modeling Studies of Gallotannins containing a Glucitol-Core and α-Glucosidase. RSC Adv 2015; 5:107904-107915. [PMID: 26989482 PMCID: PMC4792293 DOI: 10.1039/c5ra19014b] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gallotannins containing a glucitol core, which are only produced by members of the maple (Acer) genus, are more potent α-glucosidase inhibitors than the clinical drug, acarbose. While this activity is influenced by the number of substituents on the glucitol core (e.g. more galloyl groups leads to increased activity), the mechanisms of inhibitory action are not known. Herein, we investigated ligand-enzyme interactions and binding mechanisms of a series of 'glucitol-core containing gallotannins (GCGs)' against the α-glucosidase enzyme. The GCGs included ginnalins A, B and C (containing two, one, and one galloyl/s, respectively), maplexin F (containing 3 galloyls) and maplexin J (containing 4 galloyls). All of the GCGs were noncompetitive inhibitors of α-glucosidase and their interactions with the enzyme were further explored using biophysical and spectroscopic measurements. Thermodynamic parameters (by isothermal titration calorimetry) revealed a 1:1 binding ratio between GCGs and α-glucosidase. The binding regions between the GCGs and α-glucosidase, probed by a fluorescent tag, 1,1'-bis(4-anilino-5-napththalenesulfonic acid, revealed that the GCGs decreased the hydrophobic surface of the enzyme. In addition, circular dichroism analyses showed that the GCGs bind to α-glucosidase and lead to loss of the secondary α-helix structure of the protein. Also, molecular modeling was used to predict the binding site between the GCGs and the α-glucosidase enzyme. This is the first study to evaluate the mechanisms of inhibitory activities of gallotannins containing a glucitol core on α-glucosidase.
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Affiliation(s)
- Hang Ma
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Ling Wang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Circle Road at University City, Guangzhou 510006, China
- Pre-Incubator for Innovative Drugs & Medicine, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Daniel B. Niesen
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Ang Cai
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Bongsup P. Cho
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
| | - Wen Tan
- Pre-Incubator for Innovative Drugs & Medicine, School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Qiong Gu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Circle Road at University City, Guangzhou 510006, China
| | - Jun Xu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Circle Road at University City, Guangzhou 510006, China
| | - Navindra P. Seeram
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI 02881, USA
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Das NK, Ghosh N, Kale AP, Mondal R, Anand U, Ghosh S, Tiwari VK, Kapur M, Mukherjee S. Temperature Induced Morphological Transitions from Native to Unfolded Aggregated States of Human Serum Albumin. J Phys Chem B 2014; 118:7267-76. [DOI: 10.1021/jp5030944] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nirmal Kumar Das
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Narayani Ghosh
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Ajit Prabhakar Kale
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Ramakanta Mondal
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Uttam Anand
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Subhadip Ghosh
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Virendra Kumar Tiwari
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Manmohan Kapur
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Saptarshi Mukherjee
- Department of Chemistry,
Indian Institute of Science Education and Research Bhopal Indore By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
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