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Testa V, Anfossi L, Cavalera S, Di Nardo F, Serra T, Baggiani C. The Amount of Cross-Linker Influences Affinity and Selectivity of NanoMIPs Prepared by Solid-Phase Polymerization Synthesis. Polymers (Basel) 2024; 16:532. [PMID: 38399910 PMCID: PMC10892272 DOI: 10.3390/polym16040532] [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: 12/30/2023] [Revised: 02/09/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
The cross-linker methylene-bis-acrylamide is usually present in nanoMIPs obtained by solid-phase polymerization synthesis at 2 mol% concentration, with very few exceptions. Here, we studied the influence of variable amounts of methylene-bis-acrylamide in the range between 0 (no cross-linker) and 50 mol% concentration on the binding properties of rabbit IgG nanoMIPs. The binding parameters were determined by equilibrium binding experiments and the results show that the degree of cross-linking defines three distinct types of nanoMIPs: (i) those with a low degree of cross-linking, including nanoMIPs without cross-linker (0-05 mol%), showing a low binding affinity, high density of binding sites, and low selectivity; (ii) nanoMIPs with a medium degree of cross-linking (1-18 mol%), showing higher binding affinity, low density of binding sites, and high selectivity; (iii) nanoMIPs with a high degree of cross-linking (32-50 mol%), characterized by non-specific nanopolymer-ligand interactions, with low binding affinity, high density of binding sites, and no selectivity. In conclusion, the results are particularly relevant in the synthesis of high-affinity, high-selectivity nanoMIPs as they demonstrate that a significant gain in affinity and selectivity could be achieved with pre-polymerization mixtures containing quantities of cross-linker up to 10-20 mol%, well higher than those normally used in this technique.
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Affiliation(s)
| | | | | | | | | | - Claudio Baggiani
- Laboratory of Bioanalytical Chemistry, Department of Chemistry, University of Torino, Via Giuria 7, 10125 Torino, Italy; (V.T.); (L.A.); (S.C.); (F.D.N.); (T.S.)
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Singhal A, Singh A, Shrivastava A, Khan R. Epitope imprinted polymeric materials: application in electrochemical detection of disease biomarkers. J Mater Chem B 2023; 11:936-954. [PMID: 36606445 DOI: 10.1039/d2tb02135h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Epitope imprinting is a promising method for creating specialized recognition sites that resemble natural biorecognition elements. Epitope-imprinted materials have gained a lot of attention recently in a variety of fields, including bioanalysis, drug delivery, and clinical therapy. The vast applications of epitope imprinted polymers are due to the flexibility in choosing monomers, the simplicity in obtaining templates, specificity toward targets, and resistance to harsh environments along with being cost effective in nature. The "epitope imprinting technique," which uses only a tiny subunit of the target as the template during imprinting, offers a way around various drawbacks inherent to biomacromolecule systems i.e., traditional molecular imprinting techniques with regards to the large size of proteins, such as the size, complexity, accessibility, and conformational flexibility of the template. Electrochemical based sensors are proven to be promising tool for the quick, real-time monitoring of biomarkers. This review unravels epitope imprinting techniques, approaches, and strategies and highlights the applicability of these techniques for the electrochemical quantification of biomarkers for timely disease monitoring. In addition, some challenges are discussed along with future prospective developments.
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Affiliation(s)
- Ayushi Singhal
- CSIR-Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal - 462026, MP, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Amrita Singh
- Department of Biotechnology, Barkatullah University, Habibganj, Bhopal, Madhya Pradesh 462026, India
| | - Apoorva Shrivastava
- Dr D. Y. Patil Biotechnology and Bioinformatics Institute, Dr D. Y. Patil Vidyapeeth, Sr. No. 87-88, Mumbai-Bangalore Highway, Tathawade, Pune, Maharashtra, 411033, India
| | - Raju Khan
- CSIR-Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal - 462026, MP, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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Piletska E, Magumba K, Joseph L, Garcia Cruz A, Norman R, Singh R, Tabasso AFS, Jones DJL, Macip S, Piletsky S. Molecular imprinting as a tool for determining molecular markers: a lung cancer case. RSC Adv 2022; 12:17747-17754. [PMID: 35765329 PMCID: PMC9200412 DOI: 10.1039/d2ra01830f] [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: 03/21/2022] [Accepted: 05/23/2022] [Indexed: 11/29/2022] Open
Abstract
Determining which cancer patients will be sensitive to a given therapy is essential for personalised medicine. Thus, it is important to develop new tools that will allow us to stratify patients according to their predicted response to treatment. The aim of work presented here was to use molecular imprinting for determining the sensitivity of lung cancer cell lines to ionising radiation based on cell surface proteomic differences. Molecularly imprinted polymer nanoparticles (nanoMIPs) were formed in the presence of whole cells. Following trypsinolysis, protein epitopes protected by complexing with MIPs were eluted from the nanoparticles and analysed by LC-MS/MS. The analysis identified two membrane proteins, neutral amino acid transporter B (0) and 4F2 cell-surface antigen heavy chain, the abundance of which in the lung cancer cells could indicate resistance of these cells to radiotherapy. This proof-of-principle experiments shows that this technology can be used in the discovery of new biomarkers and in development of novel diagnostic and therapeutic tools for a personalised medicine approach to treating cancer. A first use of molecular imprinting for characterisation of surfaceome of the lung cancer cells and discovery of the molecular markers for radiosensitivity: towards development of an effective tool for cancer therapy and personalised medicine.![]()
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Affiliation(s)
- Elena Piletska
- School of Chemistry, College of Science and Engineering, University of Leicester Leicester UK +44-(0)116-0294-4666
| | - Kirabo Magumba
- School of Chemistry, College of Science and Engineering, University of Leicester Leicester UK +44-(0)116-0294-4666
| | - Lesslly Joseph
- School of Chemistry, College of Science and Engineering, University of Leicester Leicester UK +44-(0)116-0294-4666
| | - Alvaro Garcia Cruz
- School of Chemistry, College of Science and Engineering, University of Leicester Leicester UK +44-(0)116-0294-4666
| | - Rachel Norman
- Leicester Cancer Research Centre, University of Leicester Leicester Royal Infirmary Leicester UK
| | - Rajinder Singh
- Leicester Cancer Research Centre, University of Leicester Leicester Royal Infirmary Leicester UK
| | - Antonella F S Tabasso
- Leicester Cancer Research Centre, University of Leicester Leicester Royal Infirmary Leicester UK.,Mechanisms of Cancer and Ageing Laboratory, Department of Molecular and Cell Biology, University of Leicester Leicester UK
| | - Donald J L Jones
- Leicester Cancer Research Centre, University of Leicester Leicester Royal Infirmary Leicester UK.,Department of Cardiovascular Sciences, University of Leicester Leicester UK.,National Institute for Health Research, Leicester Biomedical Research Centre, Glenfield Hospital Leicester UK
| | - Salvador Macip
- Mechanisms of Cancer and Ageing Laboratory, Department of Molecular and Cell Biology, University of Leicester Leicester UK.,FoodLab, Faculty of Health Sciences, Universitat Oberta de Catalunya Barcelona Spain
| | - Sergey Piletsky
- School of Chemistry, College of Science and Engineering, University of Leicester Leicester UK +44-(0)116-0294-4666
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Zhang Y, Wu Z, Shi H, Xie Y, Wu MY, Zhang C, Feng S. Copper Mediated Molecularly Imprinted Polymers for Fast Recognizing Tylosin. J Pharm Biomed Anal 2022; 213:114674. [DOI: 10.1016/j.jpba.2022.114674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/12/2022] [Accepted: 02/14/2022] [Indexed: 11/30/2022]
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García Y, Vera M, Giraldo JD, Garrido-Miranda K, Jiménez VA, Urbano BF, Pereira ED. Microcystins Detection Methods: A Focus on Recent Advances Using Molecularly Imprinted Polymers. Anal Chem 2021; 94:464-478. [PMID: 34874146 DOI: 10.1021/acs.analchem.1c04090] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yadiris García
- Departamento de Química Analítica e Inorgánica Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile
| | - Myleidi Vera
- Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile
| | - Juan D Giraldo
- Instituto de Acuicultura, Universidad Austral de Chile, Sede Puerto Montt, Los Pinos s/n Balneario Pelluco, 5480000 Puerto Montt, Chile
| | - Karla Garrido-Miranda
- Center of Waste Management and Bioenergy, Scientific and Technological Bioresource Nucleus, BIOREN-UFRO, Universidad de La Frontera, P.O. Box 54-D, 4811230 Temuco, Chile
| | - Verónica A Jiménez
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Sede Concepción, Autopista Concepción-Talcahuano, 4260000 Talcahuano, Chile
| | - Bruno F Urbano
- Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile
| | - Eduardo D Pereira
- Departamento de Química Analítica e Inorgánica Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile
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Epitope-imprinted polymers for biomacromolecules: Recent strategies, future challenges and selected applications. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116414] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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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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Garcia Cruz A, Haq I, Cowen T, Di Masi S, Trivedi S, Alanazi K, Piletska E, Mujahid A, Piletsky SA. Design and fabrication of a smart sensor using in silico epitope mapping and electro-responsive imprinted polymer nanoparticles for determination of insulin levels in human plasma. Biosens Bioelectron 2020; 169:112536. [PMID: 32980804 DOI: 10.1016/j.bios.2020.112536] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/13/2020] [Accepted: 08/20/2020] [Indexed: 01/07/2023]
Abstract
A robust and highly specific sensor based on electroactive molecularly imprinted polymer nanoparticles (nanoMIP) was developed. The nanoMIP tagged with a redox probe, combines both recognition and reporting capabilities. The developed nanoMIP replaces enzyme-mediator pairs used in traditional biosensors thus, offering enhanced molecular recognition for insulin, improving performance in complex biological samples, and yielding high stability. Also, most of existing sensors show poor performance after storage. To improve costs of the logistics and avoid the need of cold storage in the chain supply, we developed an alternative to biorecognition system that relies on nanoMIP. NanoMIP were computationally designed using "in-silico" insulin epitope mapping and synthesized by solid phase polymerisation. The characterisation of the polymer nanoparticles was performed by transmission electron microscopy (TEM), dynamic light scattering (DLS), Fourier-transform Infrared (FT-IR) and surface plasmon resonance (SPR). The electrochemical sensor was developed by chemical immobilisation of the nanoMIP on screen printed platinum electrodes. The insulin sensor displayed satisfactory performances and reproducible results (RSD = 4.2%; n = 30) using differential pulse voltammetry (DPV) in the clinically relevant concentration range from 50 to 2000 pM. The developed nanoMIP offers the advantage of large number of specific recognition sites with tailored geometry, as the resultant, the sensor showed high sensitivity and selectivity to insulin with a limit of detection (LOD) of 26 and 81 fM in buffer and human plasma, respectively, confirming the practical application for point of care monitoring. Moreover, the nanoMIP showed adequate storage stability of 168 days, demonstrating the robustness of sensor for several rounds of insulin analysis.
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Affiliation(s)
- Alvaro Garcia Cruz
- Department of Chemistry, University of Leicester, University Road, LE1 7RH, Leicester, UK.
| | - Isma Haq
- Institute of Chemistry, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
| | - Todd Cowen
- Department of Chemistry, University of Leicester, University Road, LE1 7RH, Leicester, UK
| | - Sabrina Di Masi
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), Edificio A6 Multipiano CSEEM, Campus Universitario Ecotekne, Via Monteroni, 73100, Lecce, Italy
| | - Samir Trivedi
- Department of Chemistry, University of Leicester, University Road, LE1 7RH, Leicester, UK
| | - Kaseb Alanazi
- Department of Chemistry, University of Leicester, University Road, LE1 7RH, Leicester, UK
| | - Elena Piletska
- Department of Chemistry, University of Leicester, University Road, LE1 7RH, Leicester, UK
| | - Adnan Mujahid
- Institute of Chemistry, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
| | - Sergey A Piletsky
- Department of Chemistry, University of Leicester, University Road, LE1 7RH, Leicester, UK
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