1
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Biomimetic functional material-based sensors for food safety analysis: a review. Food Chem 2022; 405:134974. [DOI: 10.1016/j.foodchem.2022.134974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 11/04/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022]
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2
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Norman RL, Singh R, Muskett FW, Parrott EL, Rufini A, Langridge JI, Runau F, Dennison A, Shaw JA, Piletska E, Canfarotta F, Ng LL, Piletsky S, Jones DJL. Mass spectrometric detection of KRAS protein mutations using molecular imprinting. NANOSCALE 2021; 13:20401-20411. [PMID: 34854867 PMCID: PMC8675027 DOI: 10.1039/d1nr03180e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 11/27/2021] [Indexed: 05/07/2023]
Abstract
Cancer is a disease of cellular evolution where single base changes in the genetic code can have significant impact on the translation of proteins and their activity. Thus, in cancer research there is significant interest in methods that can determine mutations and identify the significant binding sites (epitopes) of antibodies to proteins in order to develop novel therapies. Nano molecularly imprinted polymers (nanoMIPs) provide an alternative to antibodies as reagents capable of specifically capturing target molecules depending on their structure. In this study, we used nanoMIPs to capture KRAS, a critical oncogene, to identify mutations which when present are indicative of oncological progress. Herein, coupling nanoMIPs (capture) and liquid chromatography-mass spectrometry (detection), LC-MS has allowed us to investigate mutational assignment and epitope discovery. Specifically, we have shown epitope discovery by generating nanoMIPs to a recombinant KRAS protein and identifying three regions of the protein which have been previously assigned as epitopes using much more time-consuming protocols. The mutation status of the released tryptic peptide was identified by LC-MS following capture of the conserved region of KRAS using nanoMIPS, which were tryptically digested, thus releasing the sequence of a non-conserved (mutated) region. This approach was tested in cell lines where we showed the effective genotyping of a KRAS cell line and in the plasma of cancer patients, thus demonstrating its ability to diagnose precisely the mutational status of a patient. This work provides a clear line-of-sight for the use of nanoMIPs to its translation from research into diagnostic and clinical utility.
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Affiliation(s)
- Rachel L Norman
- Leicester Cancer Research Centre, Leicester Royal Infirmary, University of Leicester, Leicester, LE1 5WW, UK.
| | - Rajinder Singh
- Leicester Cancer Research Centre, Leicester Royal Infirmary, University of Leicester, Leicester, LE1 5WW, UK.
| | - Frederick W Muskett
- Department of Molecular and Cell Biology, University of Leicester, LE1 7RH Leicester, UK
- Leicester Institute of Structural and Chemical Biology, University of Leicester, LE1 7RH Leicester, UK
| | - Emma L Parrott
- Leicester Cancer Research Centre, Leicester Royal Infirmary, University of Leicester, Leicester, LE1 5WW, UK.
| | - Alessandro Rufini
- Leicester Cancer Research Centre, Leicester Royal Infirmary, University of Leicester, Leicester, LE1 5WW, UK.
| | | | - Franscois Runau
- Leicester Cancer Research Centre, Leicester Royal Infirmary, University of Leicester, Leicester, LE1 5WW, UK.
| | - Ashley Dennison
- Leicester Cancer Research Centre, Leicester Royal Infirmary, University of Leicester, Leicester, LE1 5WW, UK.
| | - Jacqui A Shaw
- Leicester Cancer Research Centre, Leicester Royal Infirmary, University of Leicester, Leicester, LE1 5WW, UK.
| | - Elena Piletska
- MIP Diagnostics, The Exchange Building, Colworth Park, MK44 1LQ, Bedford, UK
- School of Chemistry, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | | | - Leong L Ng
- Department of Cardiovascular Sciences, University of Leicester and National Institute for Health Research Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, LE1 7RH, UK
| | - Sergey Piletsky
- MIP Diagnostics, The Exchange Building, Colworth Park, MK44 1LQ, Bedford, UK
- School of Chemistry, University of Leicester, University Road, Leicester, LE1 7RH, UK
| | - Donald J L Jones
- Leicester Cancer Research Centre, Leicester Royal Infirmary, University of Leicester, Leicester, LE1 5WW, UK.
- Department of Cardiovascular Sciences, University of Leicester and National Institute for Health Research Leicester Biomedical Research Centre, Glenfield Hospital, Leicester, LE1 7RH, UK
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3
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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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4
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Chiarello M, Anfossi L, Cavalera S, Di Nardo F, Artusio F, Pisano R, Baggiani C. Effect of Polymerization Time on the Binding Properties of Ciprofloxacin-Imprinted nanoMIPs Prepared by Solid-Phase Synthesis. Polymers (Basel) 2021; 13:2656. [PMID: 34451197 PMCID: PMC8398629 DOI: 10.3390/polym13162656] [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: 07/15/2021] [Revised: 08/02/2021] [Accepted: 08/05/2021] [Indexed: 11/30/2022] Open
Abstract
An innovative approach to imprinted nanoparticles (nanoMIPs) is represented by solid-phase synthesis. Since the polymeric chains grow over time and rearrange themselves around the template, the binding properties of nanoMIPs could depend on the polymerization time. Here we present an explorative study about the effect of different polymerization times on the binding properties of ciprofloxacin-imprinted nanoMIPs. The binding properties towards ciprofloxacin were studied by measuring the binding affinity constants (Keq) and the kinetic rate constants (kd, ka). Furthermore, selectivity and nonspecific binding were valued by measuring the rebinding of levofloxacin onto ciprofloxacin-imprinted nanoMIPs and ciprofloxacin onto diclofenac-imprinted nanoMIPs, respectively. The results show that different polymerization times produce nanoMIPs with different binding properties: short polymerization times (15 min) produced nanoMIPs with high binding affinity but low selectivity (Keq > 107 mol L-1, α ≈ 1); medium polymerization times (30 min-2 h) produced nanoMIPs with high binding affinity and selectivity (Keq ≥ 106 mol L-1, α < 1); and long polymerization times (>2 h) produced nanoMIPs with low binding affinity, fast dissociation kinetics and low selectivity (Keq ≤ 106 mol L-1, kdis > 0.2 min-1, α ≈ 1). The results can be explained as the combined effect of rearrangement and progressive stiffening of the polymer chains around the template molecules.
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Affiliation(s)
- Matteo Chiarello
- Department of Chemistry, University of Torino, 10125 Torino, Italy; (M.C.); (L.A.); (S.C.); (F.D.N.)
| | - Laura Anfossi
- Department of Chemistry, University of Torino, 10125 Torino, Italy; (M.C.); (L.A.); (S.C.); (F.D.N.)
| | - Simone Cavalera
- Department of Chemistry, University of Torino, 10125 Torino, Italy; (M.C.); (L.A.); (S.C.); (F.D.N.)
| | - Fabio Di Nardo
- Department of Chemistry, University of Torino, 10125 Torino, Italy; (M.C.); (L.A.); (S.C.); (F.D.N.)
| | - Fiora Artusio
- Department of Applied Science and Technology, Polytechnic University of Torino, 10125 Torino, Italy; (F.A.); (R.P.)
| | - Roberto Pisano
- Department of Applied Science and Technology, Polytechnic University of Torino, 10125 Torino, Italy; (F.A.); (R.P.)
| | - Claudio Baggiani
- Department of Chemistry, University of Torino, 10125 Torino, Italy; (M.C.); (L.A.); (S.C.); (F.D.N.)
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5
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Liu R, Poma A. Advances in Molecularly Imprinted Polymers as Drug Delivery Systems. Molecules 2021; 26:3589. [PMID: 34208380 PMCID: PMC8231147 DOI: 10.3390/molecules26123589] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 12/12/2022] Open
Abstract
Despite the tremendous efforts made in the past decades, severe side/toxic effects and poor bioavailability still represent the main challenges that hinder the clinical translation of drug molecules. This has turned the attention of investigators towards drug delivery vehicles that provide a localized and controlled drug delivery. Molecularly imprinted polymers (MIPs) as novel and versatile drug delivery vehicles have been widely studied in recent years due to the advantages of selective recognition, enhanced drug loading, sustained release, and robustness in harsh conditions. This review highlights the design and development of strategies undertaken for MIPs used as drug delivery vehicles involving different drug delivery mechanisms, such as rate-programmed, stimuli-responsive and active targeting, published during the course of the past five years.
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Affiliation(s)
- Rui Liu
- UCL School of Pharmacy, 29–39 Brunswick Square, Bloomsbury, London WC1N 1AX, UK;
| | - Alessandro Poma
- Division of Biomaterials and Tissue Engineering, UCL Eastman Dental Institute, Royal Free Hospital, UCL Medical School, Rowland Hill Street, London NW3 2PF, UK
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6
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Villa CC, Sánchez LT, Valencia GA, Ahmed S, Gutiérrez TJ. Molecularly imprinted polymers for food applications: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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7
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Garcia-Cruz A, Ahmad OS, Alanazi K, Piletska E, Piletsky SA. Generic sensor platform based on electro-responsive molecularly imprinted polymer nanoparticles (e-NanoMIPs). MICROSYSTEMS & NANOENGINEERING 2020; 6:83. [PMID: 34567693 PMCID: PMC8433225 DOI: 10.1038/s41378-020-00193-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 05/13/2020] [Accepted: 06/16/2020] [Indexed: 06/04/2023]
Abstract
The present research describes the design of robust electrochemical sensors based on electro-responsive molecularly imprinted polymer nanoparticles (e-MIPs). The e-MIPs, tagged with a redox probe, combine both recognition and reporting functions. This system replaces enzyme-mediator pairs used in traditional biosensors. The analyte recognition process relies on the generic actuation phenomenon when the polymer conformation of e-MIPs is changing in response to the presence of the template analyte. The analyte concentration is measured using voltammetric methods. In an exemplification of this technology, electrochemical sensors were developed for the determination of concentrations of trypsin, glucose, paracetamol, C4-homoserine lactone, and THC. The present technology allows for the possibility of producing generic, inexpensive, and robust disposable sensors for clinical, environmental, and forensic applications.
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Affiliation(s)
- A. Garcia-Cruz
- School of Chemistry, University of Leicester, Leicester, UK
| | - O. S. Ahmad
- School of Chemistry, University of Leicester, Leicester, UK
| | - K. Alanazi
- School of Chemistry, University of Leicester, Leicester, UK
| | - E. Piletska
- School of Chemistry, University of Leicester, Leicester, UK
| | - S. A. Piletsky
- School of Chemistry, University of Leicester, Leicester, UK
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8
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Martynko E, Kirsanov D. Application of Chemometrics in Biosensing: A Review. BIOSENSORS 2020; 10:E100. [PMID: 32824611 PMCID: PMC7460467 DOI: 10.3390/bios10080100] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/12/2020] [Accepted: 08/14/2020] [Indexed: 12/17/2022]
Abstract
The field of biosensing is rapidly developing, and the number of novel sensor architectures and different sensing elements is growing fast. One of the most important features of all biosensors is their very high selectivity stemming from the use of bioreceptor recognition elements. The typical calibration of a biosensor requires simple univariate regression to relate a response value with an analyte concentration. Nevertheless, dealing with complex real-world sample matrices may sometimes lead to undesired interference effects from various components. This is where chemometric tools can do a good job in extracting relevant information, improving selectivity, circumventing a non-linearity in a response. This brief review aims to discuss the motivation for the application of chemometric tools in biosensing and provide some examples of such applications from the recent literature.
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Affiliation(s)
| | - Dmitry Kirsanov
- Applied Chemometrics Laboratory, Institute of Chemistry, St. Petersburg State University, St. Petersburg, 198504 Peterhoff, Russia;
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9
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Sharma K, Kaushik G, Thotakura N, Raza K, Sharma N, Nimesh S. Enhancement effects of process optimization technique while elucidating the degradation pathways of drugs present in pharmaceutical industry wastewater using Micrococcus yunnanensis. CHEMOSPHERE 2020; 238:124689. [PMID: 31524624 DOI: 10.1016/j.chemosphere.2019.124689] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 08/19/2019] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
Pharmaceutical effluents released from industries are accountable to deteriorate the aquatic and soil environment through indirect toxic effects. Microbes are adequately been used to biodegrade pharmaceutical industry wastewater and present study was envisaged to determine biodegradation of pharmaceutical effluent by Micrococcus yunnanensis. The strain showed 42.82% COD (Chemical oxygen demand) reduction before optimization. After applying Taguchi's L8 array as an optimization technique, the biodegradation rate was enhanced by 82.95% at optimum conditions (dextrose- 0.15%, peptone 0.1%, inoculum size 4% (wv-1), rpm 200, pH 8 at 25 °C) within 6 h. The confirmation of pharmaceuticals degradation was done by 1H NMR (Nuclear magnetic resonance) studies followed by elucidation of transformation pathways of probable drugs in the effluent through Q-Tof-MS (Quadrupole Time of Flight- Mass Spectrometry). The cytotoxicity evaluation of treated and untreated wastewater was analyzed on Human Embryonic Kidney (HEK 293) cells using Alamar Blue assay, which showed significant variance.
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Affiliation(s)
- Kritika Sharma
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Bandarsindri, Distt. Ajmer, Rajasthan, 305817, India
| | - Garima Kaushik
- Department of Environmental Science, School of Earth Sciences, Central University of Rajasthan, Bandarsindri, Distt. Ajmer, Rajasthan, 305817, India.
| | - Nagarani Thotakura
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Distt. Ajmer, Rajasthan, 305817, India
| | - Kaisar Raza
- Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Bandarsindri, Distt. Ajmer, Rajasthan, 305817, India
| | - Nikita Sharma
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Distt. Ajmer, Rajasthan, 305817, India
| | - Surendra Nimesh
- Department of Biotechnology, School of Life Sciences, Central University of Rajasthan, Bandarsindri, Distt. Ajmer, Rajasthan, 305817, India
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10
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Determination of Fumonisin B1 in maize using molecularly imprinted polymer nanoparticles-based assay. Food Chem 2019; 298:125044. [DOI: 10.1016/j.foodchem.2019.125044] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 06/16/2019] [Accepted: 06/18/2019] [Indexed: 11/20/2022]
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11
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Abbasi Ghaeni F, Karimi G, Mohsenzadeh MS, Nazarzadeh M, Motamedshariaty VS, Mohajeri SA. Preparation of dual-template molecularly imprinted nanoparticles for organophosphate pesticides and their application as selective sorbents for water treatment. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1461112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
| | - Gholamreza Karimi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmacodynamics and toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Mohammad Nazarzadeh
- Polymer Division, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Vahideh Sadat Motamedshariaty
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Ahmad Mohajeri
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Pharmacodynamics and toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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12
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Ashley J, Shahbazi MA, Kant K, Chidambara VA, Wolff A, Bang DD, Sun Y. Molecularly imprinted polymers for sample preparation and biosensing in food analysis: Progress and perspectives. Biosens Bioelectron 2017; 91:606-615. [PMID: 28103516 DOI: 10.1016/j.bios.2017.01.018] [Citation(s) in RCA: 183] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/09/2017] [Accepted: 01/10/2017] [Indexed: 12/01/2022]
Abstract
Molecularly imprinted polymers (MIPs) are biomimetics which can selectively bind to analytes of interest. One of the most interesting areas where MIPs have shown the biggest potential is food analysis. MIPs have found use as sorbents in sample preparation attributed to the high selectivity and high loading capacity. MIPs have been intensively employed in classical solid-phase extraction and solid-phase microextraction. More recently, MIPs have been combined with magnetic bead extraction, which greatly simplifies sample handling procedures. Studies have consistently shown that MIPs can effectively minimize complex food matrix effects, and improve recoveries and detection limits. In addition to sample preparation, MIPs have also been viewed as promising alternatives to bio-receptors due to the inherent molecular recognition abilities and the high stability in harsh chemical and physical conditions. MIPs have been utilized as receptors in biosensing platforms such as electrochemical, optical and mass biosensors to detect various analytes in food. In this review, we will discuss the current state-of-the-art of MIP synthesis and applications in the context of food analysis. We will highlight the imprinting methods which are applicable for imprinting food templates, summarize the recent progress in using MIPs for preparing and analysing food samples, and discuss the current limitations in the commercialisation of MIPs technology. Finally, future perspectives will be given.
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Affiliation(s)
- Jon Ashley
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark
| | - Mohammad-Ali Shahbazi
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark
| | - Krishna Kant
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark
| | - Vinayaka Aaydha Chidambara
- Laboratory of Applied Micro and Nanotechnology (LAMINATE), National Food Institute, Technical University of Denmark (DTU-Food), Denmark
| | - Anders Wolff
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark
| | - Dang Duong Bang
- Laboratory of Applied Micro and Nanotechnology (LAMINATE), National Food Institute, Technical University of Denmark (DTU-Food), Denmark
| | - Yi Sun
- Department of Micro- and Nanotechnology, Technical University of Denmark, Ørsteds Plads, DK-2800 Kgs, Lyngby, Denmark.
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13
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Chen L, Wang X, Lu W, Wu X, Li J. Molecular imprinting: perspectives and applications. Chem Soc Rev 2016; 45:2137-211. [DOI: 10.1039/c6cs00061d] [Citation(s) in RCA: 1438] [Impact Index Per Article: 179.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
This critical review presents a survey of recent developments in technologies and strategies for the preparation of MIPs, followed by the application of MIPs in sample pretreatment, chromatographic separation and chemical sensing.
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Affiliation(s)
- Lingxin Chen
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003
- China
| | - Xiaoyan Wang
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003
- China
| | - Wenhui Lu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003
- China
| | - Xiaqing Wu
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003
- China
| | - Jinhua Li
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation
- Yantai Institute of Coastal Zone Research
- Chinese Academy of Sciences
- Yantai 264003
- China
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14
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Мuzyka K, Piletsky S, Zhikol O, Shishkina S. Theoretical quantum mechanical based studies of melamine – monomers interaction in pre-polymerisation phase. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/22243682.2015.1103664] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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15
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Tefas LR, Tomuţă I, Achim M, Vlase L. Development and optimization of quercetin-loaded PLGA nanoparticles by experimental design. ACTA ACUST UNITED AC 2015; 88:214-23. [PMID: 26528074 PMCID: PMC4576773 DOI: 10.15386/cjmed-418] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 03/24/2015] [Indexed: 12/16/2022]
Abstract
Background and aims Quercetin is a flavonoid with good antioxidant activity, and exhibits various important pharmacological effects. The aim of the present work was to study the influence of formulation factors on the physicochemical properties of quercetin-loaded polymeric nanoparticles in order to optimize the formulation. Materials and methods The nanoparticles were prepared by the nanoprecipitation method. A 3-factor, 3-level Box-Behnken design was employed in this study considering poly(D,L-lactic-co-glycolic) acid (PLGA) concentration, polyvinyl alcohol (PVA) concentration and the stirring speed as independent variables. The responses were particle size, polydispersity index, zeta potential and encapsulation efficiency. Results The PLGA concentration seemed to be the most important factor influencing quercetin-nanoparticle characteristics. Increasing PLGA concentration led to an increase in particle size, as well as encapsulation efficiency. On the other hand, it exhibited a negative influence on the polydispersity index and zeta potential. The PVA concentration and the stirring speed had only a slight influence on particle size and polydispersity index. However, PVA concentration had an important negative effect on the encapsulation efficiency. Based on the results obtained, an optimized formulation was prepared, and the experimental values were comparable to the predicted ones. Conclusions The overall results indicated that PLGA concentration was the main factor influencing particle size, while entrapment efficiency was predominantly affected by the PVA concentration.
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Affiliation(s)
- Lucia Ruxandra Tefas
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioan Tomuţă
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Marcela Achim
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Laurian Vlase
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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16
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Poma A, Brahmbhatt H, Watts JK, Turner NW. Nucleoside-Tailored Molecularly Imprinted Polymeric Nanoparticles (MIP NPs). Macromolecules 2014. [DOI: 10.1021/ma501530c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Alessandro Poma
- Department
of Life, Health and Chemical Sciences, The Open University, Milton Keynes MK7 6AA, United Kingdom
| | - Heli Brahmbhatt
- Department
of Life, Health and Chemical Sciences, The Open University, Milton Keynes MK7 6AA, United Kingdom
| | - Jonathan K. Watts
- Department
of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
| | - Nicholas W. Turner
- Department
of Life, Health and Chemical Sciences, The Open University, Milton Keynes MK7 6AA, United Kingdom
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