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Ma X, Lin H, Yong Y, Ju X, Li Y, Liu X, Yu Z, Wujin C, She Y, Zhang J, Abd El-Aty AM. Molecularly imprinted polymer-specific solid-phase extraction for the determination of 4-hydroxy-2(3H)benzoxazolone isolated from Acanthus ilicifolius Linnaeus using high-performance liquid chromatography-tandem mass spectrometry. Front Nutr 2022; 9:950044. [PMID: 36337639 PMCID: PMC9634063 DOI: 10.3389/fnut.2022.950044] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 10/04/2022] [Indexed: 11/13/2022] Open
Abstract
The minor constituent found in Acanthus ilicifolius Linnaeus, 4-hydroxy-2 (3H) benzoxazolone alkaloid (HBOA), has a range of versatile applications. Herein, a quick and straightforward method for extracting HBOA from A. ilicifolius Linnaeus was proposed. HBOA was used as a template, whereas methacrylic acid, ethylene glycol dimethacrylate, and acetonitrile were used as functional monomers, cross-linkers, and porogens, respectively. Molecularly imprinted polymers (MIPs) were synthesized by precipitation polymerization, and their adsorption isotherms, dynamics, and selective binding ability were characterized and analyzed. The results showed that the adsorption amount of the template was 90.18 mg/g. The MIPs were used as solid-phase extraction fillers and actual sample extraction columns, with a linear range of 0–100 μg/L, average recovery of 78.50–101.12%, and a relative standard deviation of 1.20–3.26%. The HBOA concentrations in the roots, stems, and leaves were 1,226, 557, and 205 μg/g, respectively. In addition, MIP–SPE was successfully used in isolating and purifying HBOA from different parts of A. ilicifolius Linnaeus, indicating its effectiveness in extracting and determining HBOA in other herbs.
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Affiliation(s)
- Xingbin Ma
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, China
| | - Hongling Lin
- Zhanjiang Experimental Station, Southern-Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
- Key Lab of Veterinary Pharmaceutics Development, Ministry of Agriculture/Key Lab of New Animal Drug Project, Gansu Province/Lanzhou Institute of Husbandry Science and Veterinary Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
- *Correspondence: Hongling Lin
| | - Yanhong Yong
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, China
| | - Xianghong Ju
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, China
| | - Youquan Li
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, China
| | - Xiaoxi Liu
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, China
| | - Zhichao Yu
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, China
| | - Cuomu Wujin
- Institute of Veterinary and Animal Husbandry, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, China
| | - Yongxin She
- Institute of Quality Standards and Testing Technology for Agri-Products, Chinese Academy of Agricultural Sciences, Beijing, China
- Yongxin She
| | - Jiyu Zhang
- Key Lab of Veterinary Pharmaceutics Development, Ministry of Agriculture/Key Lab of New Animal Drug Project, Gansu Province/Lanzhou Institute of Husbandry Science and Veterinary Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, China
- Institute of Veterinary and Animal Husbandry, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, China
| | - A. M. Abd El-Aty
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
- Department of Medical Pharmacology, Medical Faculty, Ataturk University, Erzurum, Turkey
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Molecularly Imprinted Nanoparticles towards MMP9 for Controlling Cardiac ECM after Myocardial Infarction: A Predictive Experimental-Computational Chemistry Investigation. Biomedicines 2022; 10:biomedicines10092070. [PMID: 36140171 PMCID: PMC9495980 DOI: 10.3390/biomedicines10092070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/14/2022] [Accepted: 08/20/2022] [Indexed: 11/17/2022] Open
Abstract
The recent advances in nanotechnology are revolutionizing preventive and therapeutic approaches to treating cardiovascular diseases. Controlling the extracellular matrix metalloproteinase (MMP) activation and expression in the failing human left ventricular myocardium represents a significant therapeutic target for heart disease. In this study, we used molecularly imprinting polymers (MIPs) to restore the correct balance between MMPs and their tissue inhibitors (TIMPs), and explored the potential of this technique exhaustively through chemical synthesis, physicochemical and biological characterizations, and computational chemistry methods. By molecular dynamics simulations based on classical force fields, we simulated the early stages of the imprinting process in solution disclosing the pivotal interaction established between the monomers and the MMP9 protein template. The average interaction energies of methacrylic acid (MAA) and poly (ethylene glycol) ethyl ether methacrylate (PEG) units were in the ranges 17–22 and 30–37 kcal/mol, respectively. At low coverage, the PEG monomers seemed firmly anchored to the protein surface and were not displaced by water, while only about 20% of MAA was replaced by water. The synthesis of MIPs was successfully with a monomer conversion higher than 99% and the production of spherical particles with average diameter of 344 ± 33 nm. HPLC analysis showed a specific recognition factor of MMP9 on MIPs of about 1.3. FT-IR Chemical Imaging confirmed the mechanisms necessary to generate a “selective memory” of the MIPs towards the enzyme. HPLC results indicated that the rebound amount of both TIMP1 and MMP2 to MIPs is lower than that of the template, showing a selectivity factor of 2.1 and 2.3, respectively. Preliminary tests on the effect of MIPs on H9C2 cells revealed that this treatment has no cytotoxic effects.
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Nicholls IA, Golker K, Olsson GD, Suriyanarayanan S, Wiklander JG. The Use of Computational Methods for the Development of Molecularly Imprinted Polymers. Polymers (Basel) 2021; 13:2841. [PMID: 34502881 PMCID: PMC8434026 DOI: 10.3390/polym13172841] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/29/2022] Open
Abstract
Recent years have witnessed a dramatic increase in the use of theoretical and computational approaches in the study and development of molecular imprinting systems. These tools are being used to either improve understanding of the mechanisms underlying the function of molecular imprinting systems or for the design of new systems. Here, we present an overview of the literature describing the application of theoretical and computational techniques to the different stages of the molecular imprinting process (pre-polymerization mixture, polymerization process and ligand-molecularly imprinted polymer rebinding), along with an analysis of trends within and the current status of this aspect of the molecular imprinting field.
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Affiliation(s)
- Ian A. Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden; (K.G.); (G.D.O.); (S.S.); (J.G.W.)
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A Review on Molecularly Imprinted Polymers Preparation by Computational Simulation-Aided Methods. Polymers (Basel) 2021; 13:polym13162657. [PMID: 34451196 PMCID: PMC8398116 DOI: 10.3390/polym13162657] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 12/22/2022] Open
Abstract
Molecularly imprinted polymers (MIPs) are obtained by initiating the polymerization of functional monomers surrounding a template molecule in the presence of crosslinkers and porogens. The best adsorption performance can be achieved by optimizing the polymerization conditions, but this process is time consuming and labor-intensive. Theoretical calculation based on calculation simulations and intermolecular forces is an effective method to solve this problem because it is convenient, versatile, environmentally friendly, and inexpensive. In this article, computational simulation modeling methods are introduced, and the theoretical optimization methods of various molecular simulation calculation software for preparing molecularly imprinted polymers are proposed. The progress in research on and application of molecularly imprinted polymers prepared by computational simulations and computational software in the past two decades are reviewed. Computer molecular simulation methods, including molecular mechanics, molecular dynamics and quantum mechanics, are universally applicable for the MIP-based materials. Furthermore, the new role of computational simulation in the future development of molecular imprinting technology is explored.
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Li Y, Xu J, Xu C, Qin Z, Li S, Hu L, Yao Z, Gonzalez FJ, Yao X. Metabolism and disposition of corylifol A from Psoralea corylifolia: metabolite mapping, isozyme contribution, species differences and identification of efflux transporters for corylifol A- O-glucuronide in HeLa1A1 cells. Xenobiotica 2020; 50:997-1008. [PMID: 32116078 DOI: 10.1080/00498254.2020.1732496] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Corylifol A (CA), a phenolic compound from Psoralea corylifolia, possessed several biological properties but poor bioavailability. Here we aimed to investigate the roles of cytochromes P450s (CYPs), UDP-glucuronosyltransferases (UGTs) and efflux transporters in metabolism and disposition of CA.Metabolism of CA was evaluated in HLM, expressed CYPs and UGTs. Chemical inhibitors and shRNA-mediated gene silencing of multidrug resistance-associated proteins (MRPs) and breast cancer resistance protein (BCRP) were performed to assess the roles of transporters in CA disposition.Three oxidated metabolites (M1-M3) and two glucuronides (M4-M5) were detected. The intrinsic clearances (CLint) values of M1 and M4 in HLM were 48.10 and 184.03 μL/min/mg, respectively. Additionally, CYP1A1, 2C8 and 2C19 were identified as main contributors with CLint values of 13.01-49.36 μL/min/mg, while UGT1A1, 1A7, 1A8 and 1A9 were with CLint values ranging from 85.01 to 284.07 μL/min/mg. Furthermore, activity correlation analysis proved CYP2C8, UGT1A1 and 1A9 were the main active hepatic isozymes. Besides, rats and monkeys were appropriate model animals. Moreover, dipyridamole and MK571 both could significantly inhibit M4 efflux. Gene silencing results also indicated MRP4 and BCRP were major contributors in HeLa1A1 cells.Taken together, CYPs, UGTs, MRP4 and BCRP were important determinants of CA pharmacokinetics.
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Affiliation(s)
- Yang Li
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Jinjin Xu
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Chunxia Xu
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Zifei Qin
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, China.,Department of Pharmacy, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shishi Li
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Liufang Hu
- College of Pharmacy, Jinan University, Guangzhou, China
| | - Zhihong Yao
- College of Pharmacy, Jinan University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, China
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Xinsheng Yao
- College of Pharmacy, Jinan University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, China
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Pan L, Ding Y, Ni X, Wang CZ, Jiang B, Zhang Y, Jiang N, Tang Y, Chen L, Yuan CS. Modeling rapid and selective capture of nNOS–PSD-95 uncouplers from Sanhuang Xiexin decoction by novel molecularly imprinted polymers based on metal–organic frameworks. RSC Adv 2020; 10:7671-7681. [PMID: 35492204 PMCID: PMC9049783 DOI: 10.1039/c9ra10537a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 02/05/2020] [Indexed: 12/12/2022] Open
Abstract
Novel and highly selective molecularly imprinted polymers based on the surface of metal–organic frameworks, NH2-MIL-101(Cr) (MIL@MIPS), were successfully fabricated to capture neuronal nitric oxide synthase–postsynaptic density protein-95 (nNOS–PSD-95) uncouplers from Sanhuang Xiexin Decoction (SXD) for stroke treatment. The resultant polymers were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and X-ray diffraction. The performance tests revealed that MIL@MIPs had a large binding capacity, fast kinetics, and excellent selectivity. Then the obtained polymers were satisfactorily applied to solid-phase extraction coupled with high-performance liquid chromatography to selectively capture nNOS–PSD-95 uncouplers from SXD. Furthermore, the biological activities of components obtained from SXD were evaluated in vivo and in vitro. As a consequence, the components showed a potent neuroprotective effect from the MTS assay and uncoupling activity from the co-immunoprecipitation experiment. In addition, the anti-ischemic stroke assay in vivo was further investigated to determine the effect of reducing infarct size and ameliorating neurological deficit by the active components. Therefore, this present study contributes a valuable new method and new tendency to selectively capture active components for stroke treatment from SXD and other natural medicines. Novel MIL@MIPs were prepared to rapidly capture nNOS–PSD-95 uncouplers from Sanhuang Xiexin decoction, coupled with SPE and HPLC.![]()
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Affiliation(s)
- Linli Pan
- School of Pharmacy
- Nanjing Medical University
- Nanjing
- China
| | - Yingying Ding
- School of Pharmacy
- Nanjing Medical University
- Nanjing
- China
| | - Xiaoting Ni
- School of Pharmacy
- Nanjing Medical University
- Nanjing
- China
| | - Chong-Zhi Wang
- Tang Center for Herbal Medicine Research
- Department of Anesthesia & Critical Care
- University of Chicago
- Chicago
- USA
| | - Bo Jiang
- School of Pharmacy
- Nanjing Medical University
- Nanjing
- China
| | - Yu Zhang
- School of Pharmacy
- Nanjing Medical University
- Nanjing
- China
| | - Nan Jiang
- School of Pharmacy
- Nanjing Medical University
- Nanjing
- China
| | - Yulin Tang
- School of Pharmacy
- Nanjing Medical University
- Nanjing
- China
| | - Lina Chen
- School of Pharmacy
- Nanjing Medical University
- Nanjing
- China
| | - Chun-Su Yuan
- Tang Center for Herbal Medicine Research
- Department of Anesthesia & Critical Care
- University of Chicago
- Chicago
- USA
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Yao D, Zhang L, Huang J, Sun C, Zhang Y, Gu X, Wang CZ, Li F, Chen L, Yuan CS. A surface magnetic imprinted polymers as artificial receptors for selective and efficient capturing of new neuronal nitric oxide synthase-post synaptic density protein-95 uncouplers. J Pharm Biomed Anal 2018; 154:180-190. [PMID: 29550707 DOI: 10.1016/j.jpba.2018.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 03/01/2018] [Accepted: 03/02/2018] [Indexed: 02/06/2023]
Abstract
In this work, surface magnetic molecularly imprinted polymers (SMMIPs) were synthesized and used as artificial receptors in the dispersive magnetic solid phase extraction (DMSPE) for capturing potential neuronal nitric oxide synthase-post synaptic density protein-95 (nNOS-PSD-95) uncouplers, which is known as neuroprotection against stroke. Factors that affected selective separation and adsorption of the artificial receptors, such as the amount of template, the types of functional monomer and porogen solvents, and the molar ratio of template/functional monomer/cross-linker were optimized. The artificial receptors were also characterized using fourier transformed infrared, scanning electron microscope, thermal gravimetric analysis and physical property measurement systems. Multiple interactions between template and SMMIPs led to larger binding capacities, faster binding kinetics, quicker separation abilities and more efficient selectivity than the surface magnetic nonimprinted polymers (SMNIPs). The SMMIPs were successfully applied to capture potential nNOS-PSD-95 uncouplers from complex samples, and eight compounds were seized and confirmed rapidly when combined with HPLC and MS. The detection of the new nNOS-PSD-95 uncouplers ranged from 0.001 to 1.500 mg/mL with correlation coefficients of 0.9990-0.9995. The LOD and LOQ were 0.10-0.68 μg/mL and 0.47-2.11 μg/mL, respectively. The neuroprotective effect and co-immunoprecipitation test in vitro revealed that Emodin-1-O-β-d-glucoside, Rhaponticin, Gnetol and 2,3,5,4'-Tetrahydroxystilbene-2-O-β-d-glucoside have neuroprotective and uncoupling activities, and that they may be the new uncouplers of nNOS-PSD-95.
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Affiliation(s)
- Dandan Yao
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Lei Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Jiaojiao Huang
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Chenghong Sun
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yu Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Xiaoli Gu
- Department of Pharmacy, The Second Affiliated Hospital of Nantong University, China
| | - Chong-Zhi Wang
- Tang Center for Herbal Medicine Research, and Department of Anesthesia & Critical Care, University of Chicago, Chicago, IL 60637, USA
| | - Fei Li
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Lina Chen
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.
| | - Chun-Su Yuan
- Tang Center for Herbal Medicine Research, and Department of Anesthesia & Critical Care, University of Chicago, Chicago, IL 60637, USA
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