1
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Li Y, Liu H, Wang S, Zhang S, Li W, Zhang G, Zhao Y. Rapid screening of xanthine oxidase inhibitors from Ligusticum wallichii by using xanthine oxidase functionalized magnetic metal-organic framework. Anal Bioanal Chem 2024:10.1007/s00216-024-05570-9. [PMID: 39347815 DOI: 10.1007/s00216-024-05570-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2024] [Revised: 09/07/2024] [Accepted: 09/23/2024] [Indexed: 10/01/2024]
Abstract
In this study, xanthine oxidase was immobilized for the first time using a novel magnetic metal-organic framework material (Fe3O4-SiO2-NH2@MnO2@ZIF-8-NH2). A ligand fishing method was established to rapidly screen XOD inhibitors from Ligusticum wallichii based on the immobilized XOD. Characterization and properties of the immobilized enzyme revealed its excellent stability and reusability. A ligand was screened from Ligusticum wallichii and identified as ligustilide by ultra-high performance liquid chromatography tandem mass spectrometry. The IC50 value of ligustilide was determined to be 27.70 ± 0.13 μM through in vitro inhibition testing. Furthermore, molecular docking verified that ligustilide could bind to amino acid residues at the active site of XOD. This study provides a rapid and effective method for the preliminary screening of XOD inhibitors from complex natural products and has great potential for further discovery of anti-hyperuricemic compounds.
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Affiliation(s)
- Yue Li
- School of Science, Xihua University, Chengdu, 610039, China
| | - Hongmei Liu
- School of Science, Xihua University, Chengdu, 610039, China
| | - Sikai Wang
- School of Science, Xihua University, Chengdu, 610039, China
- School of Food and Bioengineering, Xihua University, Chengdu, 610039, China
| | - Sisi Zhang
- School of Science, Xihua University, Chengdu, 610039, China
| | - Wen Li
- School of Science, Xihua University, Chengdu, 610039, China
| | - Guoqi Zhang
- School of Science, Xihua University, Chengdu, 610039, China
| | - Yan Zhao
- School of Science, Xihua University, Chengdu, 610039, China.
- Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, China.
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2
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Liu X, Wu J, Yang S, Li L, Ji Y. Carboxy-Functionalized Covalent Organic Framework as a Carrier for Lipase Immobilization and Its Application in Inhibitors Screening. Appl Biochem Biotechnol 2024; 196:4024-4037. [PMID: 37819460 DOI: 10.1007/s12010-023-04725-1] [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] [Accepted: 09/15/2023] [Indexed: 10/13/2023]
Abstract
Covalent organic frameworks (COFs) with large specific surface areas, high porosity, good stability, and designable structure are promising carriers for immobilized enzymes. It is important to explore lipase inhibitors from natural foods as lipase inhibitors are closely related to the treatment of obesity. In this work, a carboxyl functionalized covalent organic framework (TpBD-3COOH) was prepared by solvothermal method for covalent immobilization of porcine pancreatic lipase (PPL) and obtained the enzyme-decorated COF (PPL@COF). The immobilized lipase showed wider pH and temperature tolerance with the same optimal pH and temperature of 7.5 and 50 ℃ compared to free lipase. After 6 successive reuses, the PPL@COF maintained 53.0% of its original activity. Immobilized lipase also displayed enhanced storage stability (55.4% after 14 days at 4 ℃). When p-nitrophenyl acetate was applied as the substrate, the calculated Michaelis constant was 3.57 mM and the half maximal inhibitory concentration of orlistat was 3.20 μM. Finally, the PPL@COF was used for enzyme inhibitors screening from natural foods combined with UV spectrophotometry, and Hawthorn was screened for excellent lipase inhibitory activity.
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Affiliation(s)
- Xue Liu
- Department of Analytical Chemistry, China Pharmaceutical University, 24 TongJiaXiang, Nanjing, 210009, Jiangsu, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, Nanjing, 210009, China
| | - Jiaqi Wu
- Department of Analytical Chemistry, China Pharmaceutical University, 24 TongJiaXiang, Nanjing, 210009, Jiangsu, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, Nanjing, 210009, China
| | - Shan Yang
- Department of Analytical Chemistry, China Pharmaceutical University, 24 TongJiaXiang, Nanjing, 210009, Jiangsu, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, Nanjing, 210009, China
| | - Lingyu Li
- Department of Analytical Chemistry, China Pharmaceutical University, 24 TongJiaXiang, Nanjing, 210009, Jiangsu, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, Nanjing, 210009, China
| | - Yibing Ji
- Department of Analytical Chemistry, China Pharmaceutical University, 24 TongJiaXiang, Nanjing, 210009, Jiangsu, China.
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, Nanjing, 210009, China.
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3
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Yu H, Xing Z, Jia K, Li S, Xu Y, Zhao P, Zhu X. Inquiry lipaseoring the mechanism of pancreatic lipase inhibition by isovitexin based on multispectral method and enzyme inhibition assay. LUMINESCENCE 2024; 39:e4765. [PMID: 38769927 DOI: 10.1002/bio.4765] [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: 12/27/2023] [Revised: 03/26/2024] [Accepted: 04/17/2024] [Indexed: 05/22/2024]
Abstract
Isovitexin is a main natural flavonoid component in various plants. Currently, the inhibitory effect of isovitexin on pancreatic lipase (PL) and its mechanism have not been elucidated yet. In the present study, we investigated the inhibitory effect of isovitexin on PL, as well as its interaction mechanism, using enzyme inhibition methods, spectroscopic analysis, and molecular simulations. Results showed that isovitexin possessed significant PL inhibitory activity, with IC50 values of 0.26 ± 0.02 mM. The interaction between isovitexin and PL was dominated by static quenching, and mainly through hydrogen bonding and hydrophobic interaction forces. Analysis of fluorescence spectroscopy confirmed that isovitexin binding altered the conformation of the PL. Circular dichroism (CD) spectrum indicated that isovitexin altered the secondary structure of PL by decreasing the α-helix content and increasing the β-fold content. Molecular simulations further characterize the conformational changes produced by the interaction between isovitexin with PL. The performed study may provide a new insight into the inhibitory mechanism of isovitexin as a novel PL inhibitor.
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Affiliation(s)
- Hui Yu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Zhongfu Xing
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Kaijie Jia
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Sai Li
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yankun Xu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Pan Zhao
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xiaojing Zhu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
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Yuan Y, Pan F, Zhu Z, Yang Z, Wang O, Li Q, Zhao L, Zhao L. Construction of a QSAR Model Based on Flavonoids and Screening of Natural Pancreatic Lipase Inhibitors. Nutrients 2023; 15:3489. [PMID: 37571426 PMCID: PMC10421515 DOI: 10.3390/nu15153489] [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: 06/29/2023] [Revised: 07/30/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
Pancreatic lipase (PL) is a key hydrolase in lipid metabolism. Inhibition of PL activity can intervene in obesity, a global sub-health disease. The natural product is considered a good alternative to chemically synthesized drugs due to its advantages, such as low side effects. However, traditional experimental screening methods are labor-intensive and cost-consuming, and there is an urgent need to develop high-throughput screening methods for the discovery of anti-PL natural products. In this study, a high-throughput virtual screening process for anti-PL natural products is provided. Firstly, a predictable anti-PL natural product QSAR model (R2train = 0.9444, R2test = 0.8962) were developed using the artificial intelligence drug design software MolAIcal based on genetic algorithms and their conformational relationships. 1068 highly similar (FS > 0.8) natural products were rapidly enriched based on the structure-activity similarity principle, combined with the QSAR model and the ADMET model, for rapid prediction of a total of five potentially efficient anti-PL natural products (IC50pre < 2 μM). Subsequently, molecular docking, molecular dynamics simulation, and MMGBSA free energy calculation were performed to not only reveal the interaction of candidate novel natural products with the amino acid residues of PL but also to validate the stability of these novel natural compounds bound to PL. In conclusion, this study greatly simplifies the screening and discovery of anti-PL natural products and accelerates the development of novel anti-obesity functional foods.
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Affiliation(s)
- Yutong Yuan
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (Z.Z.); (Z.Y.); (Q.L.)
- Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Fei Pan
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100093, China;
| | - Zehui Zhu
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (Z.Z.); (Z.Y.); (Q.L.)
| | - Zichen Yang
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (Z.Z.); (Z.Y.); (Q.L.)
| | - Ou Wang
- National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China;
| | - Qing Li
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (Z.Z.); (Z.Y.); (Q.L.)
| | - Liang Zhao
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (Z.Z.); (Z.Y.); (Q.L.)
| | - Lei Zhao
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (Z.Z.); (Z.Y.); (Q.L.)
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5
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Chi H, Tian S, Li X, Chen Y, Xu Q, Wang Q, Shi W, Adu-Frimpong M, Tong S. Construction of lipid raft-coupled agarose gels as bioaffinity chromatography materials and validation with tropomyosin-related kinase A-targeted drugs. J Chromatogr A 2023; 1691:463803. [PMID: 36731332 DOI: 10.1016/j.chroma.2023.463803] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/04/2023] [Accepted: 01/13/2023] [Indexed: 01/15/2023]
Abstract
In order to improve the separation process of affinity chromatography that has silica as the main carrier material, we sought to construct Lipid Rafts@CNBr-Sepharose 4B affinity chromatography model. We extracted the lipid rafts from U251 cells with a descaler method and sucrose density gradient centrifugation. Afterwards, it was discovered via immunofluorescence that the lipid rafts contain a large amount of tropomyosin-related kinase A (TrkA) protein. Also, agarose powder in the lyophilised state was pretreated, before the lipid rafts were coupled to the agarose gel in a coupling buffer of alkaline pH. CNBr-Sepharose 4B affinity gel packing was characterised using UV spectrophotometric, immunofluorescence and scanning electron microscopic techniques, wherein and the results showed that the lipid rafts were successfully coupled to the agarose gels. Three compounds were used to verify the specific sorption of Sepharose 4B and CNBr-Sepharose 4B, which showed no specific sorption on the materials. Of note, the prepared Lipid Rafts@CNBr-Sepharose 4B agarose gels packed with TrkA-rich target proteins could be successfully validated for the active drug gefitinib with high affinity sorption efficiency and eluted with good recovery and reproducibility. This study broadens the range of affinity chromatography carrier materials and provides a reference for research in active drug screening.
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Affiliation(s)
- Hao Chi
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Sheng Tian
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Xiu Li
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Yuchu Chen
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Qiumin Xu
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Qixiao Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Wenwan Shi
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Michael Adu-Frimpong
- School of Chemical and Biochemical Sciences, C. K. Tedam University of Technology and Applied Sciences (CKT-UTAS), Navrongo, UK-0215-5321, Ghana
| | - Shanshan Tong
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, 212000, China.
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Ayeni EA, Ma C, Hu Y, Bai X, Zhang Y, Liao X. Screening of Monoamine Oxidase Inhibitors from Seeds of Nigella glandulifera Freyn et Sint. by Ligand Fishing and Their Neuroprotective Activity. PLANTS (BASEL, SWITZERLAND) 2023; 12:882. [PMID: 36840231 PMCID: PMC9960078 DOI: 10.3390/plants12040882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/11/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
Nigella glandulifera is a traditional medicinal plant used to treat seizures, insomnia, and mental disorders among the Tibetan and Xinjiang people of China. Recent pharmacological research indicates that the seeds of this plant have a neuroprotective effect; however, the chemical components responsible for this effect are unknown. Monoamine oxidase B (MAO-B) has been recognized as a target for developing anti-Parkinson's disease drugs. In this work, MAO-B functionalized magnetic nanoparticles were used to enrich the enzyme's ligands in extracts of N. glandulifera seeds for rapid screening of MAO-B inhibitors coupled with HPLC-MS. Tauroside E and thymoquinone were found to inhibit the enzyme with IC50 values of 35.85 μM and 25.54 μM, respectively. Both compounds exhibited neuroprotective effects on 6-OHDA-induced PC-12 cells by increasing the cell viability to 52% and 58%, respectively, compared to 50% of the injured cells. Finally, molecular docking indicated strong interactions of both inhibitors with the enzyme. This work shows that MAO-B functionalized magnetic nanoparticles are effective for rapid screening of anti-PD inhibitors from complex herbal mixtures and, at the same time, shows the promising potential of this plant's seeds in developing anti-PD drugs.
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Affiliation(s)
- Emmanuel Ayodeji Ayeni
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Ma
- Phytochemistry Laboratory, Tibet Plateau Institute of Biology, Lhasa 850001, China
| | - Yikao Hu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaolin Bai
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongmei Zhang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Xun Liao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
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7
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Yan C, Wang H, Chen S. Screening of small molecule inhibitors against RhoA protein from Alisma using an online detection system. J Chromatogr A 2022; 1684:463558. [DOI: 10.1016/j.chroma.2022.463558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 10/31/2022]
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8
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Xu J, Cao P, Fan Z, Luo X, Yang G, Qu T, Gao J. Rapid Screening of Lipase Inhibitors in Scutellaria baicalensis by Using Porcine Pancreatic Lipase Immobilized on Magnetic Core–Shell Metal–Organic Frameworks. Molecules 2022; 27:molecules27113475. [PMID: 35684413 PMCID: PMC9182405 DOI: 10.3390/molecules27113475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/22/2022] [Accepted: 05/24/2022] [Indexed: 11/16/2022] Open
Abstract
As for ligand fishing, the current immobilization approaches have some potential drawbacks such as the small protein loading capacity and difficult recycle process. The core–shell metal–organic frameworks composite (Fe3O4-COOH@UiO-66-NH2), which exhibited both magnetic characteristics and large specific surface area, was herein fabricated and used as magnetic support for the covalent immobilization of porcine pancreatic lipase (PPL). The resultant composite Fe3O4-COOH@UiO-66-NH2@PPL manifested a high loading capacity (247.8 mg/g) and relative activity recovery (101.5%). In addition, PPL exhibited enhanced tolerance to temperature and pH after immobilization. Then, the composite Fe3O4-COOH@UiO-66-NH2@PPL was incubated with the extract of Scutellaria baicalensis to fish out the ligands. Eight lipase inhibitors were obtained and identified by UPLC-Q-TOF-MS/MS. The feasibility of the method was further confirmed through an in vitro inhibitory assay and molecular docking. The proposed ligand fishing technique based on Fe3O4-COOH@UiO-66-NH2@PPL provided a feasible, selective, and effective platform for discovering enzyme inhibitors from natural products.
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Affiliation(s)
| | | | | | | | | | | | - Jianping Gao
- Correspondence: Jianping Gao, E-mail: ; Tel.: +86-0351-398-5244
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9
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Zhao Y, Hu JJ, Bai XL, Liu HP, Qi XW, Liao X. Fast screening of tyrosinase inhibitors from traditional Chinese medicinal plants by ligand fishing in combination with in situ fluorescent assay. Anal Bioanal Chem 2022; 414:2265-2273. [PMID: 34982177 DOI: 10.1007/s00216-021-03864-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/26/2021] [Accepted: 12/22/2021] [Indexed: 11/30/2022]
Abstract
A simple and rapid method for screening of tyrosinase (TYR) inhibitors present in traditional Chinese medicines (TCMs) was developed by combining ligand fishing and the fluorescent enzymatic assay based on dopamine-functionalized carbon quantum dots (CQDs-Dopa). Ligands of the enzyme present in the TCM extractions were firstly adsorbed on the enzyme-modified magnetic beads, and then the beads were magnetically separated and subjected directly to the CQDs-Dopa-based fluorescent assay. Finally, compounds were desorbed from the "active" beads and identified with ultra-performance liquid chromatography-triple quadrupole mass spectrometry. A known natural TYR inhibitor quercetin was selected to assess the feasibility and quantification performance of this method, and good linearity in the range of 0.01-0.16 mM (R2 = 0.992) with a low detection limit of 0.004 mM was obtained. This method was then applied to screen TYR inhibitors present in Scutellaria baicalensis and Sophora flavescens. Six TYR inhibitors including baicalin (1), baicalein (2), wogonin (3), oroxylin A (4), kurarinone (5), and sophoraflavanone G (6) were found, among which 1-4 were firstly discovered in this work. This is the first report on the in situ assessment of the target compounds obtained by ligand fishing in the form of a mixture, which exhibited the combined advantages of specific extraction ability of ligand fishing and the high sensitivity of CQDs-based fluorescent assay, showing great potential for fast screening of enzyme inhibitors from TCMs.
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Affiliation(s)
- Yan Zhao
- School of Science, Xihua University, Chengdu, 610039, China
| | - Jin-Jie Hu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiao-Lin Bai
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hao-Peng Liu
- School of Science, Xihua University, Chengdu, 610039, China
| | - Xu-Wei Qi
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xun Liao
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
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Hou W, Liu C, Li S, Zhang Y, Jin Y, Li X, Liu Z, Niu H, Xia J. An efficient strategy based on two-stage chromatography and in vitro evaluation for rapid screening and isolation of acetylcholinesterase inhibitors from Scutellaria baicalensis Georgi. J Sep Sci 2022; 45:1170-1184. [PMID: 34990521 DOI: 10.1002/jssc.202100918] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/11/2021] [Accepted: 01/04/2022] [Indexed: 11/06/2022]
Abstract
The extraction of Scutellaria baicalensis Georgi was investigated using the response surface methodology-genetic algorithm mathematical regression model, and the extraction variables were optimized to maximize the flavonoid yield. Furthermore, a simple and efficient ultrafiltration-liquid chromatography-mass spectrometry and molecular docking methods was developed for the rapid screening and identification of acetylcholinesterase inhibitors present in Scutellaria baicalensis Georgi. Subsequently, four major chemical constituents, namely baicalein, norwogonin, wogonin, and oroxylin A, were identified as potent acetylcholinesterase inhibitors. This novel approach, involving the use of ultrafiltration-liquid chromatography-mass spectrometry and molecular docking methods combined with stepwise flow rate counter-current chromatography and semi-preparative high-performance liquid chromatography, could potentially provide a powerful tool for the screening and extraction of acetylcholinesterase inhibitors from complex matrices and be a useful platform for the production of bioactive and nutraceutical ingredients. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Wanchao Hou
- College of Chemistry, Jilin University, Changchun, 130021, China
| | - Chunming Liu
- Central Laboratory, Changchun Normal University, No. 677 North Chang-ji Road, Changchun, 130032, China
| | - Sainan Li
- Central Laboratory, Changchun Normal University, No. 677 North Chang-ji Road, Changchun, 130032, China
| | - Yuchi Zhang
- Central Laboratory, Changchun Normal University, No. 677 North Chang-ji Road, Changchun, 130032, China
| | - Yongri Jin
- College of Chemistry, Jilin University, Changchun, 130021, China
| | - Xuwen Li
- College of Chemistry, Jilin University, Changchun, 130021, China
| | - Zhen Liu
- Central Laboratory, Changchun Normal University, No. 677 North Chang-ji Road, Changchun, 130032, China
| | - Huazhou Niu
- Central Laboratory, Changchun Normal University, No. 677 North Chang-ji Road, Changchun, 130032, China
| | - Jianli Xia
- Central Laboratory, Changchun Normal University, No. 677 North Chang-ji Road, Changchun, 130032, China
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11
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Fishing of α-Glucosidase's Ligands from Aloe vera by α-Glucosidase Functionalized Magnetic Nanoparticles. Molecules 2021; 26:molecules26195840. [PMID: 34641385 PMCID: PMC8510290 DOI: 10.3390/molecules26195840] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 11/16/2022] Open
Abstract
α-Glucosidase was immobilized on magnetic nanoparticles (MNPs) for selective solid-phase extraction of the enzyme’s ligands present in Aloe vera, which is a medicinal plant used for the treatment of various diseases and possesses anti-diabetic activity. One new compound, aloeacone (2), together with two known compounds, aloenin aglycone (1) and aloin A (3), were fished out as the enzyme’s ligands. The structure of 2 was determined by HR-MS and comprehensive NMR techniques. Compound 3 exhibited a weak inhibitory effect on α-glucosidase, while compounds 1 and 2 were found to possess activation effects on the enzyme for the first time. It is interesting that both an inhibitor and agonists of α-glucosidase were fished out in one experiment.
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12
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Mechanistic insights into the inhibition of pancreatic lipase by apigenin: Inhibitory interaction, conformational change and molecular docking studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116505] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Liu J, Zhang HX, Shi YP. Lipase immobilization on magnetic cellulose microspheres for rapid screening inhibitors from traditional herbal medicines. Talanta 2021; 231:122374. [DOI: 10.1016/j.talanta.2021.122374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/22/2021] [Accepted: 03/27/2021] [Indexed: 12/30/2022]
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14
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Magnetic particles for enzyme immobilization: A versatile support for ligand screening. J Pharm Biomed Anal 2021; 204:114286. [PMID: 34358814 DOI: 10.1016/j.jpba.2021.114286] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/20/2021] [Accepted: 07/25/2021] [Indexed: 12/12/2022]
Abstract
Enzyme inhibitors represent a substantial fraction of all small molecules currently in clinical use. Therefore, the early stage of drug-discovery process and development efforts are focused on the identification of new enzyme inhibitors through screening assays. The use of immobilized enzymes on solid supports to probe ligand-enzyme interactions have been employed with success not only to identify and characterize but also to isolate new ligands from complex mixtures. Between the available solid supports, magnetic particles have emerged as a promising support for enzyme immobilization due to the high superficial area, easy separation from the reaction medium and versatility. Particularly, the ligand fishing assay has been employed as a very useful tool to rapidly isolate bioactive compounds from complex mixtures, and hence the use of magnetic particles for enzyme immobilization has been widespread. Thus, this review provides a critical overview of the screening assays using immobilized enzymes on magnetic particles between 2006 and 2021.
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15
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Zeng F, Wu W, Zhang Y, Pan X, Duan J. Rapid screening of lipase inhibitors in licorice extract by using porcine pancreatic lipase immobilized on Fe 3O 4 magnetic nanoparticles. Food Funct 2021; 12:5650-5657. [PMID: 34018495 DOI: 10.1039/d0fo03352a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chalcones, a class of natural lipase inhibitors, have received substantial attention from researchers in recent years. Although many kinds of chalcones are typically distributed in G. inflata, there is little literature about the anti-lipase activity of G. inflata extracts (GIEs). In the present study, a ligand fishing strategy for fast screening of lipase inhibitors from GIEs was thus proposed. Porcine pancreatic lipase (PPL) was firstly immobilized on carboxyl modified Fe3O4 magnetic nanoparticles (MNPs) to obtain PPL functionalized MNPs (PPL@MNPs), and then the PPL@MNPs were incubated with a bioactive fraction to fish out the ligands. Eight ligands were obtained and identified as one flavone together with seven chalcones. Licochalcone A, licochalcone D and licochalcone E inhibited pancreatic lipase (PL) with IC50 of 4.9, 3.2 and 5.8 μM, respectively. Meanwhile, investigation of the structure-activity relationship also revealed that isopentenyl and hydroxyl substituents at ring A were essential for the noncovalent inhibitory potency of the chalcones.
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Affiliation(s)
- Fei Zeng
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China. and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, PR China
| | - Wenxing Wu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China. and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, PR China
| | - Yiying Zhang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China. and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, PR China
| | - Xin Pan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China. and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, PR China
| | - Jinao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, and National and Local Collaborative Engineering Center of Chinese Medicinal Resources and Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, P.R. China. and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, PR China
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16
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Yin SJ, Zhao J, Yang FQ. Recent applications of magnetic solid phase extraction in sample preparation for phytochemical analysis. J Pharm Biomed Anal 2020; 192:113675. [PMID: 33099113 DOI: 10.1016/j.jpba.2020.113675] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/01/2020] [Accepted: 10/03/2020] [Indexed: 12/22/2022]
Abstract
Sample preparation such as isolation and pre-concentration is a crucial step for the phytochemical analysis. Magnetic solid-phase extraction (MSPE) has received considerable attention, mainly due to its phase separation more conveniently by facile magnetic decantation as compared to traditional SPE. This review focused on the recent applications of MSPE in sample preparation for the analysis of phytochemical compounds in plants, biological samples and Chinese herbal preparations. In addition, the enzymes immobilized on the magnetic materials and used for the biospecific extraction of enzyme inhibitors were also discussed. The information summarized in this article may provide a reference to the further applications of MSPE in phytochemical analysis.
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Affiliation(s)
- Shi-Jun Yin
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Jing Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, PR China.
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China.
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17
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de Lima JM, Furlani IL, da Silva LRG, Valverde AL, Cass QB. Micro- and nano-sized amine-terminated magnetic beads in a ligand fishing assay. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:4116-4122. [PMID: 32766628 DOI: 10.1039/d0ay01269f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Functionalized micro- and nano-sized magnetic beads (MBs) have been widely used as versatile supports for proteins, enzymes, and drugs. Immobilized protein on MB surfaces has been successfully applied for ligand fishing assays allowing for direct identification of active ligands from complex mixtures, such as natural products and synthetic libraries. MBs with different properties such as different core compositions, sizes, coatings, and surface modifications are available commercially. Studies have been conducted to understand the role of these properties for ligand fishing assays. Here we evaluated, for the first time, the effect of MB size on the ligand fishing assay for acetylcholinesterase from Electrophorus electricus (AChE). For this purpose, four commercially available amine-terminated magnetic particles with diameters ranging from 4.5 nm to 106 μm were evaluated to fish out galantamine, a well-known AChE inhibitor, from an aqueous solution. All MBs were efficient at using glutaraldehyde to covalently immobilize AChE. The particles with diameters of about 1 μm (small microparticles) presented a higher protein mass capacity per milligram of particle than did those with diameters of about 4.5 nm (nanoparticles) and those with diameters of about 106 μm (large microparticles). The influence of these supports on the produced AChE-MBs with regards to hydrolysis turnover and ligand fishing was evaluated and is fully discussed.
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Affiliation(s)
- Juliana Maria de Lima
- Separare, Departamento de Química, Universidade Federal de São Carlos, São Carlos, Brazil.
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18
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Phytopharmacological Strategies in the Management of Type 2 Diabetes Mellitus. Foods 2020; 9:foods9030271. [PMID: 32131470 PMCID: PMC7143818 DOI: 10.3390/foods9030271] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/19/2020] [Accepted: 02/25/2020] [Indexed: 01/10/2023] Open
Abstract
Type 2 Diabetes Mellitus (T2DM) is a chronic disease which corresponds to 90% of the worldwide cases of diabetes, mainly due to epigenetic factors such as unhealthy lifestyles. First line therapeutic approaches are based on lifestyle changes, most of the time complemented with medication mostly associated with several side effects and high costs. As a result, the scientific community is constantly working for the discovery and development of natural therapeutic strategies that provide lower financial impact and minimize side effects. This review focus on these nature-based therapeutic strategies for prevention and control of T2DM, with a special emphasis on natural compounds that present pharmacological activity as dipeptidyl peptidase-4 (DPP4), alpha-amylase, alpha-glucosidase, lipase, and protein tyrosine phosphatase 1B (PTP1B) inhibitors.
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19
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“Recent advances on support materials for lipase immobilization and applicability as biocatalysts in inhibitors screening methods”-A review. Anal Chim Acta 2020; 1101:9-22. [DOI: 10.1016/j.aca.2019.11.073] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/29/2019] [Accepted: 11/30/2019] [Indexed: 01/01/2023]
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20
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An immobilization enzyme for screening lipase inhibitors from Tibetan medicines. J Chromatogr A 2020; 1615:460711. [DOI: 10.1016/j.chroma.2019.460711] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/14/2019] [Accepted: 11/14/2019] [Indexed: 01/08/2023]
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21
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Highly efficient and selective production of FFCA from CotA-TJ102 laccase-catalyzed oxidation of 5-HMF. Int J Biol Macromol 2019; 128:132-139. [DOI: 10.1016/j.ijbiomac.2019.01.104] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 11/19/2022]
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22
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Wu GF, Jiang XL, Gong YZ, Hu YD, Bai XL, Liao X. Ligand fishing of anti-neurodegenerative components from Lonicera japonica using magnetic nanoparticles immobilised with monoamine oxidase B. J Sep Sci 2019; 42:1289-1298. [PMID: 30653844 DOI: 10.1002/jssc.201801255] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 01/11/2019] [Accepted: 01/14/2019] [Indexed: 12/12/2022]
Abstract
In this work, monoamine oxidase B was immobilised onto magnetic nanoparticles to prepare a new type of affinity solid-phase extraction adsorbent, which was used to extract the possible anti-neurodegenerative components from the Lonicera japonica flower extracts. Coupled with high-performance liquid chromatography with mass spectrometry, two monoamine oxidase B ligands were fished-out and identified as isochlorogenic acid A and isochlorogenic acid C, which were found to be inhibitors of the enzyme for the first time, with similar half maximal inhibitory concentration values of 29.05 ± 0.49 and 29.77 ± 1.03 μM, respectively. Furthermore, equilibrium-dialysis dissociation assay of enzyme-inhibitor complex showed that both compounds have reversible binding patterns to monoamine oxidase B, and kinetic analysis demonstrated that they were mixed-type inhibitors for monoamine oxidase B, with Ki and Kis values of 9.55 and 37.24 μM for isochlorogenic acid A, 9.53 and 35.50 μM for isochlorogenic acid C, respectively. The results indicated that isochlorogenic acid A and isochlorogenic acid C were the major active components responsible for the anti-degenerative activity of the flowers of L. japonica, while magnetic nanoparticles immobilised monoamine oxidase B could serve as an efficient solid-phase extraction adsorbent to specifically extract monoamine oxidase B inhibitors from complex herbal extracts.
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Affiliation(s)
- Gui-Fang Wu
- Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xiao-Lan Jiang
- Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Yu-Zhou Gong
- Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Ya-Dong Hu
- Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, P. R. China
| | - Xiao-Lin Bai
- Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, P. R. China
| | - Xun Liao
- Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, P. R. China
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Matsuo Y, Matsumoto K, Inaba N, Mimaki Y. Daisaikoto Inhibits Pancreatic Lipase Activity and Decreases Serum Triglyceride Levels in Mice. Biol Pharm Bull 2018; 41:1485-1488. [PMID: 30175784 DOI: 10.1248/bpb.b18-00324] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Daisaikoto Extract, a Kampo medicine listed in the Japanese pharmacopoeia 17th edition, is clinically used to treat obesity and related symptoms. Lipid metabolism is closely related to obesity, and pancreatic lipase inhibitors are therefore regarded as effective for the treatment of obesity. Although Daisaikoto has shown promise in the treatment of obesity, its mechanism of action has yet to be elucidated. In the present study, we found that Daisaikoto extract inhibits pancreatic lipase activity in a dose-dependent manner and decreases serum triglyceride levels in mice. To determine the crude drugs responsible for lipase inhibition, 8 variants of Daisaikoto extract without one crude drug were prepared and evaluated for lipase inhibitory activity. The lipase inhibitory activity of the Daisaikoto extract was reduced by excluding Scutellariae Radix (SR), which was found to inhibit lipase activity with an IC50 value of 1.70 mg/mL. In conclusion, Daisaikoto represents a natural medicine, in particular SR, capable of inhibiting pancreatic lipase and lipid absorption.
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Affiliation(s)
- Yukiko Matsuo
- Tokyo University of Pharmacy and Life Sciences, School of Pharmacy
| | - Kenya Matsumoto
- Tokyo University of Pharmacy and Life Sciences, School of Pharmacy
| | - Niro Inaba
- Tokyo University of Pharmacy and Life Sciences, School of Pharmacy
| | - Yoshihiro Mimaki
- Tokyo University of Pharmacy and Life Sciences, School of Pharmacy
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24
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Wang T, Li D, Yu B, Qi J. Screening inhibitors of xanthine oxidase from natural products using enzyme immobilized magnetic beads by high-performance liquid chromatography coupled with tandem mass spectrometry. J Sep Sci 2018; 40:1877-1886. [PMID: 28261954 DOI: 10.1002/jssc.201601438] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 02/13/2017] [Accepted: 02/23/2017] [Indexed: 01/12/2023]
Abstract
In this study, high-performance liquid chromatography coupled with tandem mass spectrometry was used to assess the results of bioactive compound screening from natural products using immobilized enzyme magnetic beads. We compared three commercial magnetic beads with modified amino, carboxy, and N-hydroxysuccinimide groups, respectively. Amino magnetic beads performed best for immobilization and were selected for further experiments. Xanthine oxidase was immobilized on amino magnetic beads and applied to screen potential inhibitors in fresh Zingiber officinale Roscoe, extracts of Scutellaria baicalensis Georgi, and Pueraria lobata Ohwi. In total, 12 potential xanthine oxidase ligands were identified from fresh Zingiber root and Scutellaria root extracts, of which eight were characterized and the concentration required for 50% inhibition was determined. Preliminary structure-function relationships were discussed based on these results. A convenient and effective method was therefore developed for the identification of active compounds from complex natural product mixtures.
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Affiliation(s)
- Ting Wang
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing, P.R. China
| | - Dapeng Li
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing, P.R. China
| | - Boyang Yu
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing, P.R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Jiangsu, Nanjing, P.R. China
| | - Jin Qi
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, Nanjing, P.R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Jiangsu, Nanjing, P.R. China
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25
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Glucovanillin: A potent inhibitor of lipase from Acinetobacter radioresistens. INFORMATICS IN MEDICINE UNLOCKED 2018. [DOI: 10.1016/j.imu.2018.01.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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26
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Wang M, Gu D, Li H, Wang Q, Kang J, Chu T, Guo H, Yang Y, Tian J. Rapid prediction and identification of lipase inhibitors in volatile oil from Pinus massoniana L. needles. PHYTOCHEMISTRY 2017; 141:114-120. [PMID: 28609696 DOI: 10.1016/j.phytochem.2017.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 05/15/2017] [Accepted: 06/02/2017] [Indexed: 06/07/2023]
Abstract
A facile method based on gas chromatography-mass spectrometry (GC-MS) and molecular docking was established to analyze, identify, and predict lipase inhibitors in volatile oil from Pinus massoniana L. needles (PMLN). The volatile oil, with an IC50 value of 15.25 ± 0.06 μg/mL, exhibited potential inhibitory activity against lipase in vitro. In total, 33 compounds were identified from the volatile oil through GC-MS analysis. The major compounds in the volatile oil were β-pinene (39.24%), α-pinene (14.68%), germacrene D (9.08%), caryophyllene (6.94%), α-terpineol (5.39%), β-phellandrene (4.82%), and D-limonene (3.93%). The identified compounds were individually docked with lipase as the target through molecular docking. Among the compounds, longifolene characterized by preferable binding energy and the good inhibition constant exhibited potential lipase inhibitory activity. The IC50 value of longifolene was 25.10 ± 0.49 μM, indicating that this compound is the active ingredient responsible for the lipase inhibitory activity of PMLN volatile oil.
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Affiliation(s)
- Miao Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Dongyu Gu
- School of Marine Science and Environment Engineering, Dalian Ocean University, Dalian 116023, China.
| | - Haoquan Li
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Qi Wang
- School of Marine Science and Environment Engineering, Dalian Ocean University, Dalian 116023, China
| | - Jie Kang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Tingting Chu
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Hong Guo
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yi Yang
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Jing Tian
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China.
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27
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A spectroscopic study on the absorption of carbonic anhydrase onto the nanoporous silica nanoparticle. Int J Biol Macromol 2017; 99:739-745. [DOI: 10.1016/j.ijbiomac.2017.03.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/05/2017] [Accepted: 03/06/2017] [Indexed: 01/28/2023]
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