201
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Zhang S, Zhao Y. Tuning surface-cross-linking of molecularly imprinted cross-linked micelles for molecular recognition in water. J Mol Recognit 2018; 32:e2769. [PMID: 30419606 DOI: 10.1002/jmr.2769] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/09/2018] [Accepted: 10/15/2018] [Indexed: 12/12/2022]
Abstract
Molecular recognition in water is an important challenge in supramolecular chemistry. Surface-core double cross-linking of template-containing surfactant micelles by the click reaction and free radical polymerization yields molecularly imprinted nanoparticles (MINPs) with guest-complementary binding sites. An important property of MINP-based receptors is the surface-cross-linking between the propargyl groups of the surfactants and a diazide cross-linker. Decreasing the number of carbons in between the two azides enhanced the binding affinity of the MINPs, possibly by keeping the imprinted binding site more open prior to the guest binding. The depth of the binding pocket can be controlled by the distribution of the hydrophilic/hydrophobic groups of the template and was found to influence the binding in addition to electrostatic interactions between oppositely charged MINPs and guests. Cross-linkers with an alkoxyamine group enabled two-stage double surface-cross-linking that strengthened the binding constants by an order of magnitude, possibly by expanding the binding pocket of the MINP into the polar region. The binding selectivity among very similar isomeric structures also improved.
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Affiliation(s)
- Shize Zhang
- Department of Chemistry, Iowa State University, Ames, IA, USA
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, IA, USA
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202
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A novel capacitive sensor based on molecularly imprinted nanoparticles as recognition elements. Biosens Bioelectron 2018; 120:108-114. [DOI: 10.1016/j.bios.2018.07.070] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 01/05/2023]
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203
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Mezhoud S, Paljevac M, Koler A, Le Droumaguet B, Grande D, Krajnc P. Novel hypercrosslinking approach toward high surface area functional 2-hydroxyethyl methacrylate-based polyHIPEs. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.09.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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204
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Nothling MD, Xiao Z, Bhaskaran A, Blyth MT, Bennett CW, Coote ML, Connal LA. Synthetic Catalysts Inspired by Hydrolytic Enzymes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03326] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mitchell D. Nothling
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Zeyun Xiao
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China
| | - Ayana Bhaskaran
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Mitchell T. Blyth
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Christopher W. Bennett
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Michelle L. Coote
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Luke A. Connal
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
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205
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Zhao Y. Sequence-Selective Recognition of Peptides in Aqueous Solution: A Supramolecular Approach through Micellar Imprinting. Chemistry 2018; 24:14001-14009. [PMID: 29694679 PMCID: PMC6150789 DOI: 10.1002/chem.201801401] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/20/2018] [Indexed: 11/09/2022]
Abstract
Sequence-selective recognition of peptides in water has been one of the most important and yet unsolved problems in bioorganic and supramolecular chemistry. The motivation comes from not only the importance of these molecules in biology but also the fundamental challenges involved in the research. Molecular imprinting in doubly cross-linked surfactant micelles offers a unique solution to this problem by creating a "supramolecular code" on the micelle surface that matches the structural features of the peptide chain. Hydrophobic "dimples" are constructed on imprinted micelles that match the hydrophobic side chains of the peptide precisely in size and shape. Polar binding functionalities are installed at correct positions to interact with specific acidic and basic groups on the peptide. Secondary hydrogen-bonding and electrostatic interactions are introduced through imprinting to enhance the binding affinity and specificity further. Binding affinities of tens of nanomolar are readily achieved in water for biological peptides with over a dozen residues. Excellent binding selectivity is observed even for subtly different peptides. The synthesis of these protein-sized nanoparticles involves a one-pot reaction complete within 2 days; purification requires nothing but precipitation and solvent washing. These features make the molecularly imprinted nanoparticles (MINPs) highly promising peptide-binding "artificial antibodies" for chemical and biological applications.
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Affiliation(s)
- Yan Zhao
- Department of Chemistry, Iowa State University, Ames, IA 50011-3111, U.S.A., Fax: (+1) 515-294-0105,
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206
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El-Naggar NEA, Deraz SF, El-Ewasy SM, Suddek GM. Purification, characterization and immunogenicity assessment of glutaminase free L-asparaginase from Streptomyces brollosae NEAE-115. BMC Pharmacol Toxicol 2018; 19:51. [PMID: 30139388 PMCID: PMC6108126 DOI: 10.1186/s40360-018-0242-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 08/09/2018] [Indexed: 11/10/2022] Open
Abstract
Background L-asparaginase is a potential therapeutic enzyme widely used in the chemotherapy protocols of pediatric and adult patients with acute lymphoblastic leukemia. However, its use has been limited by a high rate of hypersensitivity in the long-term used. Hence, there is a continuing need to search for other L-asparaginase sources capable of producing an enzyme with less adverse effects. Methods Production of extracellular L-asparaginase by Streptomyces brollosae NEAE-115 was carried out using submerged fermentation. L-asparaginase was purified by ammonium sulphate precipitation and pure enzyme was reached using ion-exchange chromatography, followed by enzyme characterization. Anticancer activity towards Ehrlich Ascites Carcinoma (EAC) cells was investigated in female Swiss albino mice by determination of tumor size and the degree of tumor growth inhibition. The levels of anti-L-asparaginase IgG antibodies in mice sera were measured using ELISA method. Results The purified L-asparaginase showed a total activity of 795.152 with specific activity of 76.671 U/mg protein and 7.835 − purification fold. The enzyme purity was confirmed by using SDS–PAGE separation which revealed only one distinctive band with a molecular weight of 67 KDa. The enzyme showed maximum activity at pH 8.5, optimum temperature of 37 °C, incubation time of 50 min and optimum substrate concentration of 7 mM. A Michaelis-Menten constant analysis showed a Km value of 2.139 × 10− 3 M with L-asparagine as substrate and Vmax of 152.6 UmL− 1 min− 1. The half-life time (T1/2) was 65.02 min at 50°С, while being 62.65 min at 60°С. Furthermore, mice treated with Streptomyces brollosae NEAE-115 L-asparaginase showed higher cytotoxic effect (79% tumor growth inhibition) when compared to commercial L-asparaginase group (67% tumor growth inhibition). Conclusions The study reveals the excellent property of this enzyme which makes it highly valuable for development of chemotherapeutic drug.
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Affiliation(s)
- Noura El-Ahmady El-Naggar
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt.
| | - Sahar F Deraz
- Department of Protein Research Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt
| | - Sara M El-Ewasy
- Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications, Alexandria, Egypt
| | - Ghada M Suddek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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207
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Cegłowski M, Hoogenboom R. Molecularly Imprinted Poly(2-oxazoline) Based on Cross-Linking by Direct Amidation of Methyl Ester Side Chains. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01068] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Michał Cegłowski
- Supramolecular Chemistry Group, Centre of Macromolecular
Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular
Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
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208
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Tuwahatu CA, Yeung CC, Lam YW, Roy VAL. The molecularly imprinted polymer essentials: curation of anticancer, ophthalmic, and projected gene therapy drug delivery systems. J Control Release 2018; 287:24-34. [PMID: 30110614 DOI: 10.1016/j.jconrel.2018.08.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 08/10/2018] [Accepted: 08/11/2018] [Indexed: 02/06/2023]
Abstract
The development of polymeric materials as drug delivery systems has advanced from systems that rely on classical passive targeting to carriers that can sustain the precisely controlled release of payloads upon physicochemical triggers in desired microenvironment. Molecularly imprinted polymers (MIP), materials designed to capture specific molecules based on their molecular shape and charge distribution, are attractive candidates for fulfilling these purposes. In particular, drug-imprinted polymers coupled with active targeting mechanisms have been explored as potential drug delivery systems. In this review, we have curated important recent efforts in the development of drug-imprinted polymers in a variety of clinical applications, especially oncology and ophthalmology. MIP possesses properties that may complement the traditional delivery systems of these two disciplines, such as passive enhanced permeability and retention effect (EPR) in cancer tumors, and passive drug diffusion in delivering ophthalmic therapeutics. Furthermore, the prospects of MIP integration with the emerging gene therapies will be discussed.
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Affiliation(s)
- Christian Antonio Tuwahatu
- Department of Materials Science and Engineering and State Key Laboratory of Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Chi Chung Yeung
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Yun Wah Lam
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Vellaisamy Arul Lenus Roy
- Department of Materials Science and Engineering and State Key Laboratory of Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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209
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Hu L, Zhao Y. Molecularly imprinted artificial esterases with highly specific active sites and precisely installed catalytic groups. Org Biomol Chem 2018; 16:5580-5584. [PMID: 30051894 DOI: 10.1039/c8ob01584h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A difficult challenge in synthetic enzymes is the creation of substrate-selective active sites with accurately positioned catalytic groups. Covalent molecular imprinting in cross-linked micelles afforded such active sites in protein-sized, water-soluble nanoparticle catalysts. Our method allowed a systematic tuning of the distance of the catalytic group to the bound substrate. The catalysts displayed enzyme-like kinetics and easily distinguished substrates with subtle structural differences.
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Affiliation(s)
- Lan Hu
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA.
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210
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Insights into high-efficiency molecularly imprinted nanocomposite membranes by channel modification for selective enrichment and separation of norfloxacin. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.03.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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211
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Xu M, Yang S, Gu Z. Two‐Dimensional Metal‐Organic Framework Nanosheets: A Rapidly Growing Class of Versatile Nanomaterials for Gas Separation, MALDI‐TOF Matrix and Biomimetic Applications. Chemistry 2018; 24:15131-15142. [DOI: 10.1002/chem.201800556] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Indexed: 01/17/2023]
Affiliation(s)
- Ming Xu
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials ScienceNanjing Normal University 210023 Nanjing China
| | - Shi‐Shu Yang
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials ScienceNanjing Normal University 210023 Nanjing China
| | - Zhi‐Yuan Gu
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials ScienceNanjing Normal University 210023 Nanjing China
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212
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Liu Y, Zhang L, Zhao N, Han Y, Zhao F, Peng Z, Li Y. Preparation of molecularly imprinted polymeric microspheres based on distillation-precipitation polymerization for an ultrasensitive electrochemical sensor. Analyst 2018; 142:1091-1098. [PMID: 28272604 DOI: 10.1039/c7an00059f] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A highly sensitive electrochemical sensor based on a carbon paste electrode (CPE) modified with molecularly imprinted polymeric microspheres (MIPMSs) was developed for the determination of bisphenol A (BPA). For the first time BPA-imprinted MIPMSs were prepared via distillation precipitation polymerization, and then the polymeric microspheres were involved in producing the MIPMS-modified CPE (MIPMS/CPE). The polymers obtained were observed via a scanning electron microscope and its dynamic and static adsorption performances were investigated. Cyclic voltammetry and electrochemical impedance spectroscopy were performed to study the preparation process and electrochemical behavior of the modified carbon paste electrodes with [Fe(CN)6]3-/4- ions acting as electrical indicators. Compared with the bulk MIP packed sensor, the MIPMS/CPE exhibits a higher sensing response and better reproducibility. The detection linear range for BPA is 1 × 10-11-1 × 10-7 M with a detection limit of 2.8 × 10-12 M (S/N = 3) under the optimal experimental conditions. Moreover, the MIPMS/CPE exhibited good selectivity and stability. The developed sensor can determine BPA in real samples including soil, milk and water rapidly and accurately after simple sample pretreatment.
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Affiliation(s)
- Yuan Liu
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
| | - Lu Zhang
- Key Laboratory of Xinjiang Phytomedicine Resources of Ministry of Education, School of Pharmacy, Shihezi University, Shihezi 832000, China
| | - Na Zhao
- Key Laboratory of Xinjiang Phytomedicine Resources of Ministry of Education, School of Pharmacy, Shihezi University, Shihezi 832000, China
| | - Yajie Han
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Feilang Zhao
- Jiangsu Devote Instrumental Science & Technology Co., Ltd, Huai'an, Jiangsu 223001, China
| | - Zhengchun Peng
- College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yingchun Li
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China. and Key Laboratory of Xinjiang Phytomedicine Resources of Ministry of Education, School of Pharmacy, Shihezi University, Shihezi 832000, China
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213
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Arifuzzaman MD, Zhao Y. Artificial Zinc Enzymes with Fine-Tuned Active Sites for Highly Selective Hydrolysis of Activated Esters. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02292] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- MD Arifuzzaman
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, United States
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, United States
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214
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Arifuzzaman MD, Zhao W, Zhao Y. Surface Ligands in the Imprinting and Binding of Molecularly Imprinted Cross-Linked Micelles. Supramol Chem 2018; 30:929-939. [PMID: 31223222 PMCID: PMC6585997 DOI: 10.1080/10610278.2018.1489540] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/08/2018] [Indexed: 10/28/2022]
Abstract
Molecular recognition in water is challenging but water-soluble molecularly imprinted nanoparticle (MINP) receptors were produced readily by double cross-linking of surfactant micelles in the presence of suitable template molecules. When the micellar surface was decorated with different polyhydroxylated ligands, significant interactions could be introduced between the surface ligands and the template. Flexible surface ligands worked better than rigid ones to interact with the polar moiety of the template, especially for those template molecules whose water-exposed surface is not properly solvated by water. The importance of these hydrophilic interactions was examined in the context of different substrates, density of the surface ligands, and surface-cross-linking density of the MINP. Together with the hydrophobic interactions in the core, the surface hydrophilic interactions can be used to enhance the binding of guest molecules in water.
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Affiliation(s)
- M D Arifuzzaman
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
| | - Wei Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111, USA, Tel: +1-515-294-5845
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215
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Eersels K, Diliën H, Lowdon JW, Steen Redeker E, Rogosic R, Heidt B, Peeters M, Cornelis P, Lux P, Reutelingsperger CP, Schurgers LJ, Cleij TJ, van Grinsven B. A Novel Biomimetic Tool for Assessing Vitamin K Status Based on Molecularly Imprinted Polymers. Nutrients 2018; 10:E751. [PMID: 29891757 PMCID: PMC6024727 DOI: 10.3390/nu10060751] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 04/24/2018] [Accepted: 06/08/2018] [Indexed: 11/18/2022] Open
Abstract
Vitamin K was originally discovered as a cofactor required to activate clotting factors and has recently been shown to play a key role in the regulation of soft tissue calcification. This property of vitamin K has led to an increased interest in novel methods for accurate vitamin K detection. Molecularly Imprinted Polymers (MIPs) could offer a solution, as they have been used as synthetic receptors in a large variety of biomimetic sensors for the detection of similar molecules over the past few decades, because of their robust nature and remarkable selectivity. In this article, the authors introduce a novel imprinting approach to create a MIP that is able to selectively rebind vitamin K₁. As the native structure of the vitamin does not allow for imprinting, an alternative imprinting strategy was developed, using the synthetic compound menadione (vitamin K₃) as a template. Target rebinding was analyzed by means of UV-visible (UV-VIS) spectroscopy and two custom-made thermal readout techniques. This analysis reveals that the MIP-based sensor reacts to an increasing concentration of both menadione and vitamin K₁. The Limit of Detection (LoD) for both compounds was established at 700 nM for the Heat Transfer Method (HTM), while the optimized readout approach, Thermal Wave Transport Analysis (TWTA), displayed an increased sensitivity with a LoD of 200 nM. The sensor seems to react to a lesser extent to Vitamin E, the analogue under study. To further demonstrate its potential application in biochemical research, the sensor was used to measure the absorption of vitamin K in blood serum after taking vitamin K supplements. By employing a gradual enrichment strategy, the sensor was able to detect the difference between baseline and peak absorption samples and was able to quantify the vitamin K concentration in good agreement with a validation experiment using High-Performance Liquid Chromatography (HPLC). In this way, the authors provide a first proof of principle for a low-cost, straightforward, and label-free vitamin K sensor.
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Affiliation(s)
- Kasper Eersels
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Hanne Diliën
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Joseph W Lowdon
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Erik Steen Redeker
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Renato Rogosic
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Benjamin Heidt
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Marloes Peeters
- Division of Chemistry and Environmental Science, School of Science and the Environment, Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK.
| | - Peter Cornelis
- Soft-Matter Physics and Biophysics Section, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium.
| | - Petra Lux
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Universiteitssingel 50, 6200 MD Maastricht, The Netherlands.
| | - Chris P Reutelingsperger
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Universiteitssingel 50, 6200 MD Maastricht, The Netherlands.
| | - Leon J Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Universiteitssingel 50, 6200 MD Maastricht, The Netherlands.
| | - Thomas J Cleij
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University P.O. Box 616, 6200 MD Maastricht, The Netherlands.
| | - Bart van Grinsven
- Maastricht Science Programme, Faculty of Science and Engineering, Maastricht University P.O. Box 616, 6200 MD Maastricht, The Netherlands.
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216
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Pan M, Li R, Xu L, Yang J, Cui X, Wang S. Reproducible Molecularly Imprinted Piezoelectric Sensor for Accurate and Sensitive Detection of Ractopamine in Swine and Feed Products. SENSORS (BASEL, SWITZERLAND) 2018; 18:E1870. [PMID: 29880768 PMCID: PMC6022169 DOI: 10.3390/s18061870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/01/2018] [Accepted: 06/06/2018] [Indexed: 12/22/2022]
Abstract
This paper describes the development of a reproducible molecularly imprinted piezoelectric sensor for the accurate and sensitive detection of ractopamine (RAC) in swine and feed products. The synthesized molecularly imprinted polymer (MIP) was directly immobilized on the surface of a quartz crystal microbalance (QCM) Au chip as the recognition element. The experimental parameters in the fabrication, measurement and regeneration process were evaluated in detail to produce an MIP-based piezoelectric sensor with high sensing capability. The developed piezoelectric sensor was verified to perform favorably in the RAC analysis of swine and feed products, with acceptable accuracy (recovery: 75.9⁻93.3%), precision [relative standard deviation (n = 3): 2.3⁻6.4%], and sensitivity [limit of detection: 0.46 ng g-1 (swine) and 0.38 ng g-1 (feed)]. This portable MIP-based chip for the piezoelectric sensing of RAC could be reused for at least 30 cycles and easily stored for a long time. These results demonstrated that the developed MIP-based piezoelectric sensor presents an accurate, sensitive and cost-effective method for the quantitative detection of RAC in complex samples. This research offers a promising strategy for the development of novel effective devices used for use in food safety analysis.
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Affiliation(s)
- Mingfei Pan
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Rui Li
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Leling Xu
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Jingying Yang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Xiaoyuan Cui
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Shuo Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Tianjin University of Science and Technology, Tianjin 300457, China.
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217
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Mujahid A, Mustafa G, Dickert FL. Label-Free Bioanalyte Detection from Nanometer to Micrometer Dimensions-Molecular Imprinting and QCMs †. BIOSENSORS 2018; 8:E52. [PMID: 29865200 PMCID: PMC6022876 DOI: 10.3390/bios8020052] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/19/2018] [Accepted: 05/21/2018] [Indexed: 12/13/2022]
Abstract
Modern diagnostic tools and immunoassay protocols urges direct analyte recognition based on its intrinsic behavior without using any labeling indicator. This not only improves the detection reliability, but also reduces sample preparation time and complexity involved during labeling step. Label-free biosensor devices are capable of monitoring analyte physiochemical properties such as binding sensitivity and selectivity, affinity constants and other dynamics of molecular recognition. The interface of a typical biosensor could range from natural antibodies to synthetic receptors for example molecular imprinted polymers (MIPs). The foremost advantages of using MIPs are their high binding selectivity comparable to natural antibodies, straightforward synthesis in short time, high thermal/chemical stability and compatibility with different transducers. Quartz crystal microbalance (QCM) resonators are leading acoustic devices that are extensively used for mass-sensitive measurements. Highlight features of QCM devices include low cost fabrication, room temperature operation, and most importantly ability to monitor extremely low mass shifts, thus potentially a universal transducer. The combination of MIPs with quartz QCM has turned out as a prominent sensing system for label-free recognition of diverse bioanalytes. In this article, we shall encompass the potential applications of MIP-QCM sensors exclusively label-free recognition of bacteria and virus species as representative micro and nanosized bioanalytes.
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Affiliation(s)
- Adnan Mujahid
- Department of Analytical Chemistry, University of Vienna, Währinger Straße 38, A-1090 Vienna, Austria.
- Institute of Chemistry, University of the Punjab, Quaid-i-Azam Campus, Lahore 54590, Pakistan.
| | - Ghulam Mustafa
- Center for Interdisciplinary Research in Basic Sciences, International Islamic University, H-10, Islamabad 44000, Pakistan.
| | - Franz L Dickert
- Department of Analytical Chemistry, University of Vienna, Währinger Straße 38, A-1090 Vienna, Austria.
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Nishitani S, Sakata T. Potentiometric Adsorption Isotherm Analysis of a Molecularly Imprinted Polymer Interface for Small-Biomolecule Recognition. ACS OMEGA 2018; 3:5382-5389. [PMID: 30023917 PMCID: PMC6045357 DOI: 10.1021/acsomega.8b00627] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 05/02/2018] [Indexed: 05/30/2023]
Abstract
In this paper, we report a direct and quantitative analytical method of small-biomolecule recognition with a molecularly imprinted polymer (MIP) interface, taking advantage of the potentiometric principle of a field-effect transistor (FET) sensor, which enables the direct detection of ionic charges without using labeling materials such as fluorescent dyes. The interaction of low-molecular-weight oligosaccharides such as paromomycin and kanamycin with the MIP interface including phenylboronic acid (PBA) was directly and quantitatively analyzed from the electrical signals of an MIP-coated FET sensor. In particular, the change in the potential response of the FET sensor was derived on the basis of the multi-Langmuir adsorption isotherm equations, considering the change in the molecular charges of PBA caused by the adsorption equilibrium of the analytes with the vinyl PBA-copolymerized MIP membrane. Thus, the potentiometric adsorption isotherm analysis can elucidate the formation of selective binding sites at the MIP interface. The electrochemical analysis of the functional biointerface used in this study supports the design and construction of sensors for small biomarkers.
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219
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Kamari K, Taheri A. Preparation and evaluation of magnetic core–shell mesoporous molecularly imprinted polymers for selective adsorption of amitriptyline in biological samples. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.02.031] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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220
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Li H, Wang Y, Zha H, Dai P, Xie C. Reagentless Electrochemiluminescence Sensor for Triazophos Based on Molecular Imprinting Electropolymerized Poly(Luminol-p-Aminothiophenol) Composite-Modified Gold Electrode. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018. [DOI: 10.1007/s13369-018-3289-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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221
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222
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Sun Y, Zhong S. Molecularly imprinted polymers fabricated via Pickering emulsions stabilized solely by food-grade casein colloidal nanoparticles for selective protein recognition. Anal Bioanal Chem 2018; 410:3133-3143. [PMID: 29582119 DOI: 10.1007/s00216-018-1006-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/26/2018] [Accepted: 03/06/2018] [Indexed: 11/26/2022]
Abstract
Novel molecularly imprinted polymers (MIPs) based on denatured casein nanoparticle (DCP)-stabilized Pickering emulsions were developed for the first time. Casein, a phosphoprotein, is the main protein in milk. In this work, DCPs were solely used as Pickering-type interfacial emulsifiers for fabrication of MIPs for the selective recognition of proteins for the first time. DCPs were prepared by acidification and heat denaturation (at 80 °C) of casein. Their dispersions have satisfactory colloidal stability over a wide pH range. The DCPs acted as natural, food-grade, and edible interfacial emulsifiers, and adsorbed at the oil-water interface to form Pickering emulsions. After the polymerization of monomers, the template protein was removed by elution. During the elution, the interfacial DCPs were also removed, allowing more imprinted cavities to become exposed. The interfacial imprinting technology causes nearly all the imprinted sites to locate on the surface of the polymeric material. Therefore, the MIPs obtained exhibit fast rebinding and excellent specific recognition ability toward the analytes. Overall, this work provides a promising method for designing and fabricating natural-protein-based structured emulsions to prepare MIPs and thus offers new insight into protein separation and purification. Graphical Abstract Pickering emulsions stabilized by denatured casein particles.
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Affiliation(s)
- Yanhua Sun
- School of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Shian Zhong
- School of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China.
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223
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Sharma B, Striegler S. Crosslinked Microgels as Platform for Hydrolytic Catalysts. Biomacromolecules 2018; 19:1164-1174. [DOI: 10.1021/acs.biomac.8b00019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Babloo Sharma
- Department of Chemistry and Biochemistry, 345 North Campus Drive, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Susanne Striegler
- Department of Chemistry and Biochemistry, 345 North Campus Drive, University of Arkansas, Fayetteville, Arkansas 72701, United States
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224
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Duan L, Zhao Y. Selective Binding of Folic Acid and Derivatives by Imprinted Nanoparticle Receptors in Water. Bioconjug Chem 2018. [PMID: 29513991 DOI: 10.1021/acs.bioconjchem.8b00121] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Folate receptors are overexpressed on cancer cells and frequently used for targeted delivery. Creation of synthetic receptors to bind folic acid and its analogues in water, however, is challenging because of its complex hydrogen-bonding patterns and competition for hydrogen bonds from the solvent. Micellar imprinting within cross-linkable surfactants circumvented these problems because the nonpolar micellar environment strengthened the hydrogen bonds between the amide group in the surfactant and the template molecule. Incorporation of polymerizable thiouronium functional monomers further enhanced the binding through hydrogen-bond-reinforced ion pairs with the glutamate moiety of the template. The resulting imprinted micelles were able to bind folate and their analogues with submicromolar affinity and distinguish small changes in the hydrogen-bonding patterns as well as the number/position of carboxylic acids. The binding constant obtained was 2-3 orders of magnitude higher than those reported for small-molecule synthetic receptors. Our binding study also revealed interesting details in the binding. For example, the relative contributions of different segments of the molecule to the binding followed the order of carboxylates > pyrimidine ring > pyrazine ring.
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Affiliation(s)
- Likun Duan
- Department of Chemistry , Iowa State University , Ames , Iowa 50011-3111 , United States
| | - Yan Zhao
- Department of Chemistry , Iowa State University , Ames , Iowa 50011-3111 , United States
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225
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Mathew D, Thomas B, Devaky K. Biomimetic recognition and peptidase activities of transition state analogue imprinted chymotrypsin mimics. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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226
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Vala AK, Sachaniya B, Dudhagara D, Panseriya HZ, Gosai H, Rawal R, Dave BP. Characterization of L-asparaginase from marine-derived Aspergillus niger AKV-MKBU, its antiproliferative activity and bench scale production using industrial waste. Int J Biol Macromol 2018; 108:41-46. [DOI: 10.1016/j.ijbiomac.2017.11.114] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/29/2017] [Accepted: 11/17/2017] [Indexed: 12/01/2022]
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227
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Zhang J, Lin Y, Peng H, Hong N, Cheng L, Wei G, Fan H. Dual Signal Amplification Electrochemical Biosensor for Lead Cation. ELECTROANAL 2018. [DOI: 10.1002/elan.201700818] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jing Zhang
- Department of Pharmacy; JiangXi University of Traditional Chinese Medicine; JiangXi 330004 China)
| | - Yan Lin
- Department of Pharmacy; JiangXi University of Traditional Chinese Medicine; JiangXi 330004 China)
| | - Hong Peng
- Department of Pharmacy; JiangXi University of Traditional Chinese Medicine; JiangXi 330004 China)
| | - Nian Hong
- Department of Pharmacy; JiangXi University of Traditional Chinese Medicine; JiangXi 330004 China)
| | - Lin Cheng
- Department of Pharmacy; JiangXi University of Traditional Chinese Medicine; JiangXi 330004 China)
| | - Guobing Wei
- Department of Pharmacy; JiangXi University of Traditional Chinese Medicine; JiangXi 330004 China)
| | - Hao Fan
- Department of Pharmacy; JiangXi University of Traditional Chinese Medicine; JiangXi 330004 China)
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228
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Boitard C, Bée A, Ménager C, Griffete N. Magnetic protein imprinted polymers: a review. J Mater Chem B 2018; 6:1563-1580. [PMID: 32254273 DOI: 10.1039/c7tb02985c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Protein imprinted polymers have received a lot of interest in the past few years because of their applications as tailor-made receptors for biomacromolecules. Generally, the preparation of these polymers requires numerous and time-consuming steps. But their coupling with magnetic nanoparticles simplifies and speeds up the synthesis of these materials. Some recent papers describe the use of protein imprinted polymer (PIP) coupled to magnetic iron oxide nanoparticles (MION) for the design of MION@PIP biosensors. With such systems, a target protein can be specifically and selectively captured from complex media due to exceptional chemical properties of the polymer. Despite such performances, only a limited number of studies address these hybrid nanosystems. This review focuses on the chemistry and preparation of MION@PIP nanocomposites as well as on the metrics used to characterize their performances.
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Affiliation(s)
- Charlotte Boitard
- Sorbonne Université, UPMC Univ Paris 06, CNRS, UMR 8234, PHENIX Laboratory, Case 51, 4 place Jussieu, 75252 Paris cedex 05, France.
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229
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Floating liquid crystalline molecularly imprinted polymer coated carbon nanotubes for levofloxacin delivery. Eur J Pharm Biopharm 2018; 127:150-158. [PMID: 29438726 DOI: 10.1016/j.ejpb.2018.02.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 12/07/2017] [Accepted: 02/07/2018] [Indexed: 01/12/2023]
Abstract
Liquid crystalline molecularly imprinted polymers (LC-MIPs) were low cross-linking MIPs (5-20 mol%) by introducing a LC monomer into the MIP polymerization system to keep the shape of the imprinted cavities due to additional interactions between the mesogenic groups. The multiwalled carbon nanotubes (MWCNTs) coated LC-MIP (MWCNT@LC-MIP) was the first fabricated as a novel floating interaction-controlled DDS. The synthesis was achieved by adding 9-vinylanthracene to obtain the high-density vinyl group functionalized MWCNTs firstly, and then polymerization of LC MIPs was performed on the surface of MWCNTs using a mixture of methacrylic acid, ethylene glycol dimethacrylate, and 4-methyl phenyl dicyclohexyl ethylene (LC monomer) with levofloxacin (LVF) as model template drug. Both template/functional monomer ratio and levels of crosslinker were optimized to obtain the best imprinting factor. Characterizations of polymer were investigated by the transmission electron microscope, nitrogen adsorption, thermogravimetric analysis, Fourier transform infrared spectra and floating behavior studies. The imprinting effect was confirmed by the adsorption isotherms, adsorption kinetics and effect of selectivity. In vitro release studies were examined by the LVF-loaded MWCNT@LC-MIP and the control samples, MWCNT@LC-NIP, MWCNT@MIP, MWCNT@NIP and the bare MWCNT using acetonitrile as the dissolute medium. The release profiles showed an obvious zero-order release of LVF from MWCNT@LC-MIP, which exhibited 3.8 μg/h of the release rate with duration of about 20 h. In vivo pharmacokinetic study displayed the relative bioavailability of the gastro-floating MWCNT@LC-MIP was 578.9%, whereas only 58.0% of MWCNT@MIP and 11.7% of the bared MWCNT. As a conclusion, MWCNT@LC-MIP showed potentials for oral administration by the innovative combination of floating and controlled release properties.
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230
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Canfarotta F, Czulak J, Betlem K, Sachdeva A, Eersels K, van Grinsven B, Cleij TJ, Peeters M. A novel thermal detection method based on molecularly imprinted nanoparticles as recognition elements. NANOSCALE 2018; 10:2081-2089. [PMID: 29323388 DOI: 10.1039/c7nr07785h] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Molecularly Imprinted Polymers (MIPs) are synthetic receptors that are able to selectively bind their target molecule and, for this reason, they are currently employed as recognition elements in sensors. In this work, MIP nanoparticles (nanoMIPs) are produced by solid-phase synthesis for a range of templates with different sizes, including a small molecule (biotin), two peptides (one derived from the epithelial growth factor receptor and vancomycin) and a protein (trypsin). NanoMIPs are then dipcoated on the surface of thermocouples that measure the temperature inside a liquid flow cell. Binding of the template to the MIP layer on the sensitive area of the thermocouple tip blocks the heat-flow from the sensor to the liquid, thereby lowering the overall temperature measured by the thermocouple. This is subsequently correlated to the concentration of the template, enabling measurement of target molecules in the low nanomolar regime. The significant improvement in the limit of detection (a magnitude of three orders compared to previously used MIP microparticles) can be attributed to their high affinity, enhanced conductivity and increased surface-to-volume ratio. It is the first time that these nanosized recognition elements are used in combination with thermal detection, and it is the first report on MIP-based thermal sensors for determining protein levels. The developed thermal sensors have a high selectivity, fast measurement time (<5 min), and data analysis is straightforward, which makes it possible to monitor biomolecules in real-time. The set of biomolecules discussed in this manuscript show that it is possible to cover a range of template molecules regardless of their size, demonstrating the general applicability of the biosensor platform. In addition, with its high commercial potential and biocompatibility of the MIP receptor layer, this is an important step towards sensing assays for diagnostic applications that can be used in vivo.
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Affiliation(s)
- Francesco Canfarotta
- MIP Diagnostics Ltd., Fielding Johnson Building, University of Leicester, LE1 7RH, UK.
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231
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Yang C, Zhang Y, Cao WQ, Ji XF, Wang J, Yan YN, Zhong TL, Wang Y. Synthesis of Molecularly Imprinted Cryogels to Deplete Abundant Proteins from Bovine Serum. Polymers (Basel) 2018; 10:E97. [PMID: 30966133 PMCID: PMC6414991 DOI: 10.3390/polym10010097] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 12/26/2022] Open
Abstract
Molecularly imprinted polyacrylamide cryogels were synthesized with pending templates (bovine serums of different concentrations). As the serum concentrations increased in the monomer solutions, the resulting cryogels could adsorb and deplete more proteins from serum samples. Due to the addition of vinyltriethoxysilane (VTEOS) in the prepolymerizing solutions, the polymers came as organic⁻inorganic hybrid materials. It endued the silica-modified amphoteric polyacrylamide cryogels with improved mechanical strengths. Scanning electron micrography (SEM), Infrared (IR) spectrometry, thermogravimetry-differential thermal analysis (TG-DTA), and X-ray photoelectron spectroscopy (XPS) were carried out to characterize these macroporous polymers. Amphoteric cryogels proved to be favorable materials recognizing and binding proteins. When used as liquid chromatography stationary phases, they were capable of simultaneously adsorbing various serum proteins. Electrophoresis showed that abundant proteins were gradually depleted by the cryogels prepared from increased ratios of bovine serums in the monomer solutions. As abundant proteins are always imprinted first, this sample per se imprinting method provides an effective and convenient way to deplete abundant proteins from complex samples such as serums, meanwhile concentrating and collecting scarce species therein.
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Affiliation(s)
- Chun Yang
- School of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting RD, Yangzhou 225002, China.
| | - Yan Zhang
- School of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting RD, Yangzhou 225002, China.
| | - Wei-Qin Cao
- School of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting RD, Yangzhou 225002, China
| | - Xiao-Feng Ji
- School of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting RD, Yangzhou 225002, China.
| | - Jian Wang
- School of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting RD, Yangzhou 225002, China.
| | - Ya-Nan Yan
- School of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting RD, Yangzhou 225002, China.
| | - Tao-Lin Zhong
- School of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting RD, Yangzhou 225002, China
| | - Yu Wang
- School of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting RD, Yangzhou 225002, China.
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232
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Lin Z, Zhang Y, Su Y, Qi J, Jia Y, Huang C, Dong Q. Selective extraction of bisphenol A from water by one-monomer molecularly imprinted magnetic nanoparticles. J Sep Sci 2018; 41:2029-2036. [PMID: 29333682 DOI: 10.1002/jssc.201701162] [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] [Received: 10/17/2017] [Revised: 01/02/2018] [Accepted: 01/05/2018] [Indexed: 11/06/2022]
Abstract
One-monomer molecularly imprinted magnetic nanoparticles were prepared as adsorbents for selective extraction of bisphenol A from water in this study. A single bi-functional monomer was adopted for preparation of the molecularly imprinted polymer, avoiding the tedious trial-and-error optimizations as traditional strategy. Moreover, bisphenol F was used as the dummy template for bisphenol A to avoid the interference from residual template molecules. These nanoparticles showed not only large adsorption capacity and good selectivity to the bisphenol A but also outstanding magnetic response performance. Furthermore, they were successfully used as magnetic solid-phase extraction adsorbents of bisphenol A from various water samples, including tap water, river water, and seawater. The developed method was found to be much more efficient, convenient, and economical for selective extraction of bisphenol A compared with the traditional solid-phase extraction. Separation of these nanoparticles can be easily achieved with an external magnetic field, and the optimized adsorption time was only 15 min. The recoveries of bisphenol A in different water samples ranged from 85.38 to 93.75%, with relative standard deviation lower than 7.47%. These results showed that one-monomer molecularly imprinted magnetic nanoparticles had the potential to be popular adsorbents for selective extraction of pollutants from water.
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Affiliation(s)
- Zhenkun Lin
- Center of Scientific Research, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, P. R. China
| | - Yanfang Zhang
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou, P. R. China
| | - Yu Su
- Center of Scientific Research, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, P. R. China
| | - Jinxia Qi
- Center of Scientific Research, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, P. R. China
| | - Yinhang Jia
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou, P. R. China
| | - Changjiang Huang
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou, P. R. China
| | - Qiaoxiang Dong
- Institute of Pediatrics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, P. R. China
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233
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Betlem K, Down MP, Foster CW, Akthar S, Eersels K, van Grinsven B, Cleij TJ, Banks CE, Peeters M. Development of a Flexible MIP-Based Biosensor Platform for the Thermal Detection of Neurotransmitters. ACTA ACUST UNITED AC 2018. [DOI: 10.1557/adv.2017.634] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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234
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Fa S, Zhao Y. Water-Soluble Nanoparticle Receptors Supramolecularly Coded for Acidic Peptides. Chemistry 2018; 24:150-158. [PMID: 29096045 PMCID: PMC5891325 DOI: 10.1002/chem.201703760] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Indexed: 01/20/2023]
Abstract
Sequence-specific recognition of peptides is of enormous importance to many chemical and biological applications, but has been difficult to achieve due to the minute differences in the side chains of amino acids. Acidic peptides are known to play important roles in cell growth and gene expression. In this work, we report molecularly imprinted micelles coded with molecular recognition information for the acidic and hydrophobic side chains of acidic peptides. The imprinted receptors could distinguish acidic amino acids from other polar and nonpolar amino acids, with dissociation constants of tens of nanomolar for biologically active peptides containing up to 18 amino acids.
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Affiliation(s)
- Shixin Fa
- Department of Chemistry, Iowa State University, Ames, IA 50011-3111, U.S.A
| | - Yan Zhao
- Department of Chemistry, Iowa State University, Ames, IA 50011-3111, U.S.A
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235
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Luo S, Yan G, Sun X. Molecular imprinting based on phosphorescent resonance energy transfer for malachite green detection in fishes and water. NEW J CHEM 2018. [DOI: 10.1039/c8nj01095a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Room temperature phosphorescent quantum dots combined with molecular imprinting technology for the highly selective detection of malachite green (MG) in fish and water.
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Affiliation(s)
- Shiqing Luo
- Shanxi Normal University
- Linfen 041004
- P. R. China
| | - Guiqin Yan
- Shanxi Normal University
- Linfen 041004
- P. R. China
| | - Xiaojie Sun
- Shanxi Normal University
- Linfen 041004
- P. R. China
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236
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Yuan X, Liu T, Gao L, Xing L, Zhu Y, Li S. A convenient separation method for di(2-ethylhexyl)phthalate by novel superparamagnetic molecularly imprinted polymers. RSC Adv 2018; 8:36191-36199. [PMID: 35558473 PMCID: PMC9088556 DOI: 10.1039/c8ra07316c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 10/15/2018] [Indexed: 12/30/2022] Open
Abstract
Through surface molecular imprinting technique and coating superparamagnetic Fe3O4 nanoparticles with molecularly imprinted polymers, a novel MMIP was successfully fabricated for the convenient separation of DEHP.
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Affiliation(s)
- Xinhua Yuan
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Tiantian Liu
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Lei Gao
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Lu Xing
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Yingying Zhu
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- China
| | - Songjun Li
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- China
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237
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Zink S, Moura FA, Autreto PADS, Galvão DS, Mizaikoff B. Efficient prediction of suitable functional monomers for molecular imprintingvialocal density of states calculations. Phys Chem Chem Phys 2018. [DOI: 10.1039/c7cp08283e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computational screening of suitable functional monomersvialocal density of states calculations.
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Affiliation(s)
- S. Zink
- Institute of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11
- 89081 Ulm
- Germany
| | - F. A. Moura
- Gleb Wataghin Physics Institute, State University of Campinas UNICAMP, CP 6165
- 13083-970 Campinas
- Brazil
| | | | - D. S. Galvão
- Gleb Wataghin Physics Institute, State University of Campinas UNICAMP, CP 6165
- 13083-970 Campinas
- Brazil
| | - B. Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11
- 89081 Ulm
- Germany
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238
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Xing X, Zhao Y. Fluorescent nanoparticle sensors with tailor-made recognition units and proximate fluorescent reporter groups. NEW J CHEM 2018. [DOI: 10.1039/c8nj01139g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular imprinting in micelles followed by covalent modification of the binding pocket yielded fluorescent sensors with precisely constructed binding pockets.
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Affiliation(s)
- Xiaoyu Xing
- Department of Chemistry
- Iowa State University
- Ames
- USA
| | - Yan Zhao
- Department of Chemistry
- Iowa State University
- Ames
- USA
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239
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Wu K, Yang B, Zhu X, Chen W, Luo X, Liu Z, Zhang X, Liu Q. Cobalt and nickel bimetallic sulfide nanoparticles immobilized on montmorillonite demonstrating peroxidase-like activity for H2O2 detection. NEW J CHEM 2018. [DOI: 10.1039/c8nj04647f] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, ternary transition metal sulfide (cobalt and nickel sulfides) nanoparticles were anchored on the surface of montmorillonite (MMT) by a facile one-pot hydrothermal method.
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Affiliation(s)
- Kaili Wu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology
- Qingdao 266510
- P. R. China
| | - Baochan Yang
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology
- Qingdao 266510
- P. R. China
| | - Xixi Zhu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology
- Qingdao 266510
- P. R. China
| | - Wei Chen
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology
- Qingdao 266510
- P. R. China
| | - Xiliang Luo
- College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology
- Qingdao 266042
- P. R. China
| | - Zhenxue Liu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology
- Qingdao 266510
- P. R. China
| | - Xiao Zhang
- College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology
- Qingdao 266042
- P. R. China
| | - Qingyun Liu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology
- Qingdao 266510
- P. R. China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology
- Qingdao 266590
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Fu X, Song B, Chen X, Wang A, Wang C. Highly-Controllable Imprinted Polymer Nanoshell on the Surface of Silica Nanoparticles for Selective Adsorption of 17<i>β</i>-Estradiol. ACTA ACUST UNITED AC 2018. [DOI: 10.4236/jeas.2018.84011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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241
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Zhang H, Yao R, Wang N, Liang R, Qin W. Soluble Molecularly Imprinted Polymer-Based Potentiometric Sensor for Determination of Bisphenol AF. Anal Chem 2017; 90:657-662. [PMID: 29227632 DOI: 10.1021/acs.analchem.7b03432] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Molecularly imprinted polymer (MIP)-based polymeric membrane potentiometric sensors have been successfully developed for determination of organic compounds in their ionic and neutral forms. However, most of the MIP receptors in potentiometric sensors developed so far are insoluble and cannot be well dissolved in the polymeric membranes. The heterogeneous molecular recognitions between the analytes and MIPs in the membranes are inefficient due to the less available binding sites of the MIPs. Herein we describe a novel polymeric membrane potentiometric sensor using a soluble MIP (s-MIP) as a receptor. The s-MIP is synthesized by the swelling of the traditional MIP at a high temperature. The obtained MIP can be dissolved in the plasticized polymeric membrane for homogeneous binding of the imprinted polymer to the target molecules. By using neutral bisphenol AF as a model, the proposed method exhibits an improved sensitivity compared to the conventional MIP-based sensor with a lower detection limit of 60 nM. Moreover, the present sensor exhibits an excellent selectivity over other phenols. We believe that s-MIPs can provide an appealing substitute for the traditional insoluble MIP receptors in the development of polymeric membrane-based electrochemical and optical sensors.
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Affiliation(s)
- Huan Zhang
- School of Chemical Engineering, Northwest University , Xi'an 710069, P. R. China.,Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS , Yantai, Shandong 264003, P. R. China
| | - Ruiqing Yao
- School of Chemical Engineering, Northwest University , Xi'an 710069, P. R. China
| | - Ning Wang
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS , Yantai, Shandong 264003, P. R. China
| | - Rongning Liang
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS , Yantai, Shandong 264003, P. R. China
| | - Wei Qin
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS , Yantai, Shandong 264003, P. R. China
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242
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Huang N, Yuan S, Drake H, Yang X, Pang J, Qin J, Li J, Zhang Y, Wang Q, Jiang D, Zhou HC. Systematic Engineering of Single Substitution in Zirconium Metal–Organic Frameworks toward High-Performance Catalysis. J Am Chem Soc 2017; 139:18590-18597. [DOI: 10.1021/jacs.7b09553] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ning Huang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Shuai Yuan
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Hannah Drake
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Xinyu Yang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Jiandong Pang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Junsheng Qin
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Jialuo Li
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Yingmu Zhang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Qi Wang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
| | - Donglin Jiang
- Field
of Environment and Energy, School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Japan
| | - Hong-Cai Zhou
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255, United States
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243
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Geometrical effect of 3D-memory cavity on the imprinting efficiency of transition-state analogue-built artificial hydrolases. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-2237-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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244
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Fa S, Zhao Y. Peptide-Binding Nanoparticle Materials with Tailored Recognition sites for Basic Peptides. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2017; 29:9284-9291. [PMID: 29725162 PMCID: PMC5926195 DOI: 10.1021/acs.chemmater.7b03253] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Peptides rich in basic residues such as lysine and arginine play important roles in biology such as bacterial defense and cell penetration. Although peptide-binding materials with high sequence-specificity have broad potential applications, the diverse functionalities of peptide side chains make their molecular recognition extremely difficult. By covalently capturing micelles of a doubly cross-linkable surfactant with solubilized peptide templates, we prepared water-soluble molecularly imprinted nanoparticles with high sequence-specificity for basic peptides. The nanoparticles interact with the side chains of lysine and arginine through hydrogen bonds strengthened by the nonpolar environment of the micelle. They have hydrophobic pockets in their core complementary to the hydrophobic side chains in size and shape. These recognition sites allowed the micelles to bind basic biological peptides strongly in water, with tens to hundreds of nanomolar in binding affinity.
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245
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Nanoscale trifunctional bovine hemoglobin for fabricating molecularly imprinted polydopamine via Pickering emulsions-hydrogels polymerization. Colloids Surf B Biointerfaces 2017; 159:131-138. [DOI: 10.1016/j.colsurfb.2017.07.069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 11/19/2022]
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246
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Formose Reaction Controlled by a Copolymer of N,N-Dimethylacrylamide and 4-Vinylphenylboronic Acid. Polymers (Basel) 2017; 9:polym9110549. [PMID: 30965856 PMCID: PMC6418552 DOI: 10.3390/polym9110549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 10/21/2017] [Accepted: 10/24/2017] [Indexed: 12/24/2022] Open
Abstract
The formose reaction is an oligomerization of formaldehyde under basic conditions, which produces a complicated mixture of monosaccharides and sugar alcohols. Selective formation of useful monosaccharides by the formose reaction has been an important challenge. In this study, we have investigated the formose reaction controlled by N,N-dimethylacrylamide/4-vinylphenylboronic acid copolymer (pDMA/VBA) and phenylboronic acid (PBA) because boronic acid compounds form esters with polyols, e.g., monosaccharides and sugar alcohols. We obtained time⁻conversion data in the presence of these boronic acid compounds, and characterized the products by liquid chromatography-mass spectroscopy and NMR measurements. pDMA/VBA and PBA decelerated the formose reaction because of the formation of boronic acid esters with products. It is noteworthy that the formose reaction in the presence of pDMA/VBA and PBA formed favorably six- and seven-carbon branched monosaccharides and sugar alcohols.
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247
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Zhong C, Yang B, Jiang X, Li J. Current Progress of Nanomaterials in Molecularly Imprinted Electrochemical Sensing. Crit Rev Anal Chem 2017; 48:15-32. [PMID: 28777018 DOI: 10.1080/10408347.2017.1360762] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Nanomaterials have received much attention during the past decade because of their excellent optical, electronic, and catalytic properties. Nanomaterials possess high chemical reactivity, also high surface energy. Thus, provide a stable immobilization platform for biomolecules, while preserving their reactivity. Due to the conductive and catalytic properties, nanomaterials can also enhance the sensitivity of molecularly imprinted electrochemical sensors by amplifying the electrode surface, increasing the electron transfer, and catalyzing the electrochemical reactions. Molecularly imprinted polymers that contain specific molecular recognition sites can be designed for a particular target analyte. Incorporating nanomaterials into molecularly imprinted polymers is important because nanomaterials can improve the response signal, increase the sensitivity, and decrease the detection limit of the sensors. This study describes the classification of nanomaterials in molecularly imprinted polymers, their analytical properties, and their applications in the electrochemical sensors. The progress of the research on nanomaterials in molecularly imprinted polymers and the application of nanomaterials in molecularly imprinted polymers is also reviewed.
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Affiliation(s)
- Chunju Zhong
- a Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology , Guilin , China
| | - Bin Yang
- a Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology , Guilin , China
| | - Xinxin Jiang
- a Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology , Guilin , China
| | - Jianping Li
- a Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology , Guilin , China
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248
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Rauf S, Nawaz MAH, Muhammad N, Raza R, Shahid SA, Marty JL, Hayat A. Protic ionic liquids as a versatile modulator and stabilizer in regulating artificial peroxidase activity of carbon materials for glucose colorimetric sensing. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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249
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Zhang LP, Wang XL, Pang QQ, Huang YP, Tang L, Chen M, Liu ZS. Solvent-responsive floating liquid crystalline-molecularly imprinted polymers for gastroretentive controlled drug release system. Int J Pharm 2017; 532:365-373. [DOI: 10.1016/j.ijpharm.2017.09.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 08/18/2017] [Accepted: 09/04/2017] [Indexed: 11/30/2022]
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250
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Yildirim E, Caykara T. Ibuprofen-imprinted ultrathin poly[N
-(2-hydroxypropyl) methacrylamide] films. J Appl Polym Sci 2017. [DOI: 10.1002/app.45707] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ertan Yildirim
- Department of Chemistry; Faculty of Science, Gazi University; 06500 Besevler Ankara Turkey
| | - Tuncer Caykara
- Department of Chemistry; Faculty of Science, Gazi University; 06500 Besevler Ankara Turkey
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