1
|
Thach UD, Nguyen Thi HH, Pham TD, Mai HD, Nhu-Trang TT. Synergetic Effect of Dual Functional Monomers in Molecularly Imprinted Polymer Preparation for Selective Solid Phase Extraction of Ciprofloxacin. Polymers (Basel) 2021; 13:2788. [PMID: 34451328 PMCID: PMC8398442 DOI: 10.3390/polym13162788] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/10/2021] [Accepted: 08/16/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Ciprofloxacin (CIP), an important broad-spectrum fluoroquinolone antibiotic, was often used as a template molecule for the preparation of imprinted materials. In this study, methacrylic acid and 2-vinylpyridine were employed for the first time as dual functional monomers for synthesizing ciprofloxacin imprinted polymers. METHODS The chemical and physicochemical properties of synthesized polymers were characterized using Fourier transform-infrared spectroscopy, thermogravimetric analysis-differential scanning calorimetry, scanning electron microscopy, and nitrogen adsorption-desorption isotherm. The adsorption properties of ciprofloxacin onto synthesized polymers were determined by batch experiments. The extraction performances were studied using the solid phase extraction and HPLC-UV method. RESULTS The molecularly imprinted polymer synthesized with dual functional monomers showed a higher adsorption capacity and selectivity toward the template molecule. The adsorbed amounts of ciprofloxacin onto the imprinted and non-imprinted polymer were 2.40 and 1.45 mg g-1, respectively. Furthermore, the imprinted polymers were employed as a selective adsorbent for the solid phase extraction of ciprofloxacin in aqueous solutions with the recovery of 105% and relative standard deviation of 7.9%. This work provides an alternative approach for designing a new adsorbent with high adsorption capacity and good extraction performance for highly polar template molecules.
Collapse
Affiliation(s)
- Ut Dong Thach
- Department of Polymer Chemistry, Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ha Noi 100000, Vietnam
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam
| | - Hong Hanh Nguyen Thi
- Faculty of Chemistry, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam; (H.H.N.T.); (T.D.P.); (H.D.M.)
| | - Tuan Dung Pham
- Faculty of Chemistry, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam; (H.H.N.T.); (T.D.P.); (H.D.M.)
| | - Hong Dao Mai
- Faculty of Chemistry, University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam; (H.H.N.T.); (T.D.P.); (H.D.M.)
| | - Tran-Thi Nhu-Trang
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University (NTTU), Ho Chi Minh City 700000, Vietnam
| |
Collapse
|
2
|
Khalifa ME, Ali TA, Abdallah AB. Molecularly Imprinted Polymer Based GCE for Ultra-sensitive Voltammetric and Potentiometric Bio Sensing of Topiramate. ANAL SCI 2021; 37:955-962. [PMID: 33191368 DOI: 10.2116/analsci.20p313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Topiramate (TOP) drug is classified as one of the most commonly used human drugs for anticonvulsants and antiepileptic, so its rapid detection and monitoring is of great importance. In this work, new potentiometric (MIP/PVC/GCE) and voltammetric (MIP/GO/GCE) sensors for the selective and sensitive determination of TOP were fabricated based on the molecularly imprinted polymer (MIP) approach. The MIP was synthesized by the polymerization of acrylamide and methacrylic acid as monomers, in the presence of TOP as a template and ethylene glycol dimethacrylate as a cross-linker. The obtained products were characterized by FT-IR, SEM, BET, and EDX. The MIP was embedded in a plasticized polyvinyl chloride membrane and used as a potentiometric sensor for sensing TOP. Alternatively, the synthesized MIP and graphene oxide (GO) were deposited layer-by-layer on the surface of GCE to construct a voltammetric sensor for studying the electrochemical behavior of the drug. Under optimized conditions, both electrochemical sensors showed excellent linear relationships between the concentration of TOP and the response signals of MIP/GO/GCE or MIP/PVC/GCE sensors in the 2.7 × 10-10 to 4.9 × 10-3 M and 1 × 10-9 to 3.4 × 10-3 M ranges, respectively. Also, both sensors have good reproducibility and high stability for up to 15 days for a voltammetric sensor and 28 days for a potentiometric sensor. The utility of these sensors was checked for TOP analysis in different real samples with good recovery (92.8 - 99%).
Collapse
Affiliation(s)
- Magdi E Khalifa
- Department of Chemistry, Faculty of Science, Mansoura University
| | | | - A B Abdallah
- Department of Chemistry, Faculty of Science, Mansoura University
| |
Collapse
|
3
|
Zarejousheghani M, Jaafar A, Wollmerstaedt H, Rahimi P, Borsdorf H, Zimmermann S, Joseph Y. Rational Design of Molecularly Imprinted Polymers Using Quaternary Ammonium Cations for Glyphosate Detection. Sensors (Basel) 2021; 21:E296. [PMID: 33406759 DOI: 10.3390/s21010296] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/15/2020] [Accepted: 12/30/2020] [Indexed: 01/22/2023]
Abstract
Molecularly imprinted polymers have emerged as cost-effective and rugged artificial selective sorbents for combination with different sensors. In this study, quaternary ammonium cations, as functional monomers, were systematically evaluated to design imprinted polymers for glyphosate as an important model compound for electrically charged and highly water-soluble chemical compounds. To this aim, a small pool of monomers were used including (3-acrylamidopropyl)trimethylammonium chloride, [2-(acryloyloxy)ethyl]trimethylammonium chloride, and diallyldimethylammonium chloride. The simultaneous interactions between three positively charged monomers and glyphosate were preliminary evaluated using statistical design of the experiment method. Afterwards, different polymers were synthesized at the gold surface of the quartz crystal microbalance sensor using optimized and not optimized glyphosate-monomers ratios. All synthesized polymers were characterized using atomic force microscopy, contact angle, Fourier-transform infrared, and X-ray photoelectron spectroscopy. Evaluated functional monomers showed promise as highly efficient functional monomers, when they are used together and at the optimized ratio, as predicted by the statistical method. Obtained results from the modified sensors were used to develop a simple model describing the binding characteristics at the surface of the different synthesized polymers. This model helps to develop new synthesis strategies for rational design of the highly selective imprinted polymers and to use as a sensing platform for water soluble and polar targets.
Collapse
|
4
|
SHAH S, SHAİKH H, MEMON N, BHANGER MI, QURESHİ T, KHAN H, DENİZLİ A. Preparation, characterization, and binding profile of imprinted semi-IPN cryogel composite for aluminum. Turk J Chem 2020; 44:901-922. [PMID: 33488201 PMCID: PMC7751924 DOI: 10.3906/kim-2002-36] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 05/04/2020] [Indexed: 01/04/2023] Open
Abstract
Human body is greatly exposed to aluminum due to its high abundance in the environment. This nonessential metal is a threat to the patients of chronic renal disorders, as it is easily retained in their plasma and quickly accumulates in different tissues. Thus, there is great need to remove it from the aqueous environment. In this study, Al3+ imprinted semiinterpenetrating polymer network (semi-IPN)-based cryogel composite was prepared and applied for the purification of environmental and drinking water samples from aluminum. Poly (2-hydroxyethyl methacrylate) (pHEMA) discs were produced via cryogenic treatment and imprinted semi-IPN was introduced to the 3-(trimethoxysilyl) propyl acrylatemodified macroporous cryogel discs. The adsorption properties and selectivity of the aluminum (III) imprinted semi-IPN cryogel composite were studied in detail. The imprinted semi-IPN cryogel composite showed good selectivity towards aluminum (III) ions with the imprinting factor (IF) of 76.4 in the presence of competing copper (II), nickle (II), and iron (III) ions. The maximum adsorption capacity of 271 μmol g-1 was obtained for aluminum (III) at pH 7.0 within 10 min using imprinted semi-IPN cryogel composite. The good selectivity and reusability of aluminum (III)-imprinted semi-IPN cryogel composite makes this material an eligible candidate for the purification of drinking water from aluminum (III) leaving important minerals remained in the water.
Collapse
Affiliation(s)
- Shahnila SHAH
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Huma SHAİKH
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Najma MEMON
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Muhammad Iqbal BHANGER
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Tahira QURESHİ
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Humaira KHAN
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Adil DENİZLİ
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| |
Collapse
|
5
|
He J, Lu Y, Zhao T, Li Y. Preparation of polydopamine-coated, graphene oxide/Fe 3 O 4 - imprinted nanoparticles for selective removal of sulfonylurea herbicides in cereals. J Sci Food Agric 2020; 100:3822-3831. [PMID: 32277468 DOI: 10.1002/jsfa.10419] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/29/2020] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Sulfonylureas are potentially toxic broad-spectrum herbicides. They pose a persistent threat to food safety and the environment. It is therefore important to develop a rapid and efficient pretreatment and detection method to prevent their harmful effects on human health. RESULTS In the present work, a novel and highly selective absorbent for chlorosulfuron (CS) detection was prepared by the simple self-polymerization of dopamine on the surface of magnetic graphene oxide using a CS template. The resultant imprinted nanoparticles (MGO@PDA-MIPs) were characterized by transmission electron microscopy, X-ray diffraction, vibrating-sample magnetometry, thermogravimetric analysis, and nitrogen adsorption-desorption. The adsorption experiments demonstrated that the MGO@PDA-MIPs have excellent selectivity with regard to CS, with a high imprinting factor of 3.41 compared with a non-imprinted polymer. The nanoparticles rapidly achieve adsorption equilibrium and efficient desorption because there are numerous binding sites on the thin polydopamine imprinting layer. Under optimized conditions, the MGO@PDA-MIPs can be used to detect sulfonylurea residues in cereal samples by magnetic solid phase extraction coupled with high performance liquid chromatography (HPLC). The nanoparticles have a satisfactory recovery rate (80.65-101.01%) with a relative standard deviation (RSD) of less than 7.15%, and a limit of detection with regard to CS of 1.61 μg kg-1 (S/N = 3). They can also be re-used at least seven times. CONCLUSION The MGO@PDA-MIPs have outstanding recognition performance, and can be prepared by a facile, single-step, and environmentally friendly process. They therefore have excellent potential for the recognition and separation of trace sulfonylurea herbicides in complex matrices. © 2020 Society of Chemical Industry.
Collapse
Affiliation(s)
- Jinxing He
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Yue Lu
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Tao Zhao
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Yingqiu Li
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| |
Collapse
|
6
|
Ke CB, Chen JL. Effective and Efficient Pretreatment of Polyimide Substrates by Capacitively Coupled Plasma for Coating the Composites of Tetracycline- Imprinted Polymers and Quantum Dots: Comparison with Chemical Pretreatment. Sensors (Basel) 2020; 20:E2723. [PMID: 32397682 PMCID: PMC7249214 DOI: 10.3390/s20092723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/08/2020] [Accepted: 05/08/2020] [Indexed: 12/27/2022]
Abstract
Composites of tetracycline (Tc)-imprinted polymethacrylates and quantum dots have been coated on chemically pretreated polyimide substrates (PIs) as fluorescent sensors. In this study, PIs were pretreated by capacitively coupled plasma (CCP) before coating the same composites on them. For the first time, to fabricate sensors by plasma modification of PIs, the CCP conditions, including plasma gas, flow rate, radio frequency generation power, and duration time, the fabrication details, including coating, baking, and stripping steps, and the sample loading process were optimized to perform a linear decrease in fluorescent intensity with Tc concentrations in the range of 5.0-3000 μM (R2 = 0.9995) with a limit of detection of 0.2 μM (S/N = 3, relative standard deviation (RSD) = 2.2%). The selectivity of the stripped PIs was evaluated by the imprinting factors (IFs) for Tc (IF = 7.2), other Tc analogues (IF = 3.4-5.3), and steroids (IF ≈ 1) and by the recoveries of 5.0 μM Tc from bovine serum albumin at 300 μg∙mL-1 (98%, RSD = 3.2%), fetal bovine serum at 1.5 ppt (98%, RSD = 2.8%), and liquid milk (94.5%, RSD = 5.3%). The superiority of the present plasma-treated-based sensor over the previous chemically-treated one in fabrication efficiency and detection effectiveness was clear.
Collapse
Affiliation(s)
- Ching-Bin Ke
- Department of Beauty and Health Care, Min-Hwei Junior College of Health Care Management, No.1116, Sec 2, Zhongshan E. Rd., Tainan 73658, Taiwan;
| | - Jian-Lian Chen
- School of Pharmacy, China Medical University, No. 91 Hsueh-Shih Road, Taichung 40402, Taiwan
| |
Collapse
|
7
|
Boitard C, Curcio A, Rollet AL, Wilhelm C, Ménager C, Griffete N. Biological Fate of Magnetic Protein-Specific Molecularly Imprinted Polymers: Toxicity and Degradation. ACS Appl Mater Interfaces 2019; 11:35556-35565. [PMID: 31496222 DOI: 10.1021/acsami.9b11717] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Magnetic nanoparticles coated with protein-specific molecularly imprinted polymers (MIPs) are receiving increasing attention thanks to their binding abilities, robustness, and easy synthesis compared to their natural analogues also able to target proteins, such as antibodies or aptamers. Acting as tailor-made recognition systems, protein-specific MIPs can be used in many in vivo nanomedicine applications, such as targeted drug delivery, biosensing, and tissue engineering. Nonetheless, studies on their biocompatibility and long-term fate in biological environments are almost nonexistent, although these questions have to be addressed before considering clinical applications. To alleviate this lack of knowledge, we propose here to monitor the effect of a protein-specific MIP coating on the toxicity and biodegradation of magnetic iron oxide nanoparticles, both in a minimal aqueous degradation medium and in a model of cartilage tissue formed by differentiated human mesenchymal stem cells. Degradation of iron oxide nanoparticles with or without the polymer coating was monitored for a month by following their magnetic properties using vibrating sample magnetometry and their morphology by transmission electron microscopy. We showed that the MIP coating of magnetic iron oxide nanoparticles does not affect their biocompatibility or internalization inside cells. Remarkably, the imprinted polymer coating does not hinder the magnetic particle degradation but seems to slow it down, although this effect is more visible when degradation occurs in the buffer medium than in cells. Hence, the results presented in this paper are really encouraging and open up the way to future applications of MIP-coated nanoparticles into the clinic.
Collapse
Affiliation(s)
- Charlotte Boitard
- CNRS, PHysico-chimie des Electrolytes et Nanosystèmes InterfaciauX, PHENIX , Sorbonne Université , F-75005 Paris , France
| | - Alberto Curcio
- Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057 , CNRS and Université Paris Diderot , 75205 Paris Cedex 05, France
| | - Anne-Laure Rollet
- CNRS, PHysico-chimie des Electrolytes et Nanosystèmes InterfaciauX, PHENIX , Sorbonne Université , F-75005 Paris , France
| | - Claire Wilhelm
- Laboratoire Matière et Systèmes Complexes (MSC), UMR 7057 , CNRS and Université Paris Diderot , 75205 Paris Cedex 05, France
| | - Christine Ménager
- CNRS, PHysico-chimie des Electrolytes et Nanosystèmes InterfaciauX, PHENIX , Sorbonne Université , F-75005 Paris , France
| | - Nébéwia Griffete
- CNRS, PHysico-chimie des Electrolytes et Nanosystèmes InterfaciauX, PHENIX , Sorbonne Université , F-75005 Paris , France
| |
Collapse
|
8
|
Luo Z, Xu J, Zhu D, Wang D, Xu J, Jiang H, Geng W, Wei W, Lian Z. Ion-Imprinted Polypropylene Fibers Fabricated by the Plasma-Mediated Grafting Strategy for Efficient and Selective Adsorption of Cr(VI). Polymers (Basel) 2019; 11:E1508. [PMID: 31527475 PMCID: PMC6780180 DOI: 10.3390/polym11091508] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 01/20/2023] Open
Abstract
To improve the adsorption selectivity towards hexavalent chromium anion (Cr(VI)), surface Cr(VI)-imprinted polypropylene (PP) fibers were fabricated by the plasma-mediated grafting strategy. Hence, a non-thermal Rradio frequency discharge plasma irradiation followed by a gaseous phase grafting was used to load acrylic acid (AA) onto PP fibers, which was afterwards amidated with triethylenetetramine and subjected to imprinting with a Cr(VI) template. The plasma irradiation conditions, i.e., gas species, output power, pressure, and time, were optimized and then the influence of grafting time, pressure, and temperature on the grafting degree of AA was investigated. Scanning electron microscopy and Fourier transform infrared spectroscopy were used for the characterization of pristine and modified fibers and to confirm the synthesis success. The hydrophilicity of modified fibers was greatly improved compared with pristine PP fibers. The adsorption thermodynamics and kinetics of Cr(VI) were investigated, as well as the elution efficiency and reusability. The prepared imprinted fibers showed superior adsorption selectivity to Cr(VI) compared with non-imprinted fibers. Finally, the stability of the imprinted fibers against the oxidation ability of Cr(VI) is discussed.
Collapse
Affiliation(s)
- Zhengwei Luo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| | - Jiahuan Xu
- School of Environmental Science and Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| | - Dongmei Zhu
- School of Environmental Science and Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| | - Dan Wang
- School of Environmental Science and Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| | - Jianjian Xu
- School of Environmental Science and Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| | - Hui Jiang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| | - Wenhua Geng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| | - Wuji Wei
- School of Environmental Science and Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| | - Zhouyang Lian
- School of Environmental Science and Engineering, Nanjing Tech University, 30# Puzhu South Road, Nanjing 211816, China.
| |
Collapse
|
9
|
Kudupoje MB, Klotz JL, Yiannikouris A, Dawson KA, McLeod KR, Vanzant ES. Contractile Response of Bovine Lateral Saphenous Vein to Ergotamine Tartrate Exposed to Different Concentrations of Molecularly Imprinted Polymer. Toxins (Basel) 2018; 10:E58. [PMID: 29385697 PMCID: PMC5848159 DOI: 10.3390/toxins10020058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/23/2018] [Accepted: 01/26/2018] [Indexed: 11/29/2022] Open
Abstract
Ergot alkaloids, in their active isomeric form, affect animal health and performance, and adsorbents are used to mitigate toxicities by reducing bioavailability. Adsorbents with high specificity (molecularly imprinted polymers: MIP) adsorb ergot alkaloids in vitro, but require evaluation for biological implications. Using ex vivo myography, synthetic polymers were evaluated for effects on the bioactivity of ergotamine tartrate (ETA). Polymers were first evaluated using isotherms. Lateral saphenous veins were collected from 17 steers for four independent studies: dose response of ETA, adsorbent dose response, validation of pre-myograph incubation conditions and MIP/ non-molecularly imprinted polymer (NIP) comparison. Norepinephrine normalized percent contractile response to increasing ETA exhibited a sigmoidal dose response (max: 88.47 and log of the effective molar concentration (EC50) (-log [ETA]) of 6.66 ± 0.17 M). Although sample preparation time affected contractile response (p < 0.001), pre-myograph incubation temperature (39 vs. 21 °C, 1 h) had no effect (p > 0.05). Isothermal adsorption showed a maximum adsorption of 3.27E-008 moles·mg-1 and affinity between 0.51 and 0.57 mg (R²: 0.83-0.92) for both polymers, with no significant difference between polymers (p > 0.05). No significant differences in maximum inhibitory (p = 0.96) and IC50 responses (p = 0.163) between MIP and NIP were noticed. Normalized percent contraction could be predicted from the in vitro adsorption data (R² = 0.87, p < 0.01), for both polymers. These studies indicate that synthetic polymers are potentially effective adsorbents to mitigate ergot toxicity caused by ergot alkaloids, with little evidence of significant differences between MIP and NIP in aqueous media.
Collapse
Affiliation(s)
- Manoj B Kudupoje
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA.
- Center for Animal Nutrigenomics & Applied Animal Nutrition, Alltech Inc. 3031 Catnip Hill Road, Nicholasville, KY 40356, USA.
| | - James L Klotz
- USDA-ARS, Forage-Animal Production Research Unit, Lexington, KY 40546, USA.
| | - Alexandros Yiannikouris
- Center for Animal Nutrigenomics & Applied Animal Nutrition, Alltech Inc. 3031 Catnip Hill Road, Nicholasville, KY 40356, USA.
| | - Karl A Dawson
- Center for Animal Nutrigenomics & Applied Animal Nutrition, Alltech Inc. 3031 Catnip Hill Road, Nicholasville, KY 40356, USA.
| | - Kyle R McLeod
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA.
| | - Eric S Vanzant
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA.
| |
Collapse
|
10
|
Krstulja A, Lettieri S, Hall AJ, Roy V, Favetta P, Agrofoglio LA. Tailor-Made Molecularly Imprinted Polymer for Selective Recognition of the Urinary Tumor Marker Pseudouridine. Macromol Biosci 2017; 17. [PMID: 29144579 DOI: 10.1002/mabi.201700250] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 09/09/2017] [Indexed: 12/22/2022]
Abstract
Pseudouridine (Ψ) is an important urinary cancer biomarker, especially in human colorectal cancer (CRC). Disclosed herein is the first Ψ molecularly imprinted polymer (Ψ-MIP) material obtained from tailor-engineered functional monomers. The resulting MIP imprint exhibits a remarkable imprinting factor greater than 70. It is successfully used for the selective recognition of Ψ in spiked human urine. This selective functionalized material opens the route to the development of inexpensive disposable chemosensors for noninvasive CRC diagnosis and prognosis.
Collapse
Affiliation(s)
- Aleksandra Krstulja
- ICOA UMR CNRS 7311, Université d'Orléans, Rue de Chartres, 45067, Orléans, France
| | - Stefania Lettieri
- Medway School of Pharmacy, University of Greenwich and Kent, Chatham, Kent, ME4 4TB, UK
| | - Andrew J Hall
- Medway School of Pharmacy, University of Greenwich and Kent, Chatham, Kent, ME4 4TB, UK
| | - Vincent Roy
- ICOA UMR CNRS 7311, Université d'Orléans, Rue de Chartres, 45067, Orléans, France
| | - Patrick Favetta
- ICOA UMR CNRS 7311, Université d'Orléans, Rue de Chartres, 45067, Orléans, France
| | - Luigi A Agrofoglio
- ICOA UMR CNRS 7311, Université d'Orléans, Rue de Chartres, 45067, Orléans, France
| |
Collapse
|
11
|
Chai Z, BelBruno JJ. Thermochemical study of amino acid imprinted polymer films. J Mol Recognit 2015; 28:651-5. [PMID: 25990092 DOI: 10.1002/jmr.2479] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/13/2015] [Accepted: 04/17/2015] [Indexed: 12/25/2022]
Abstract
Molecularly imprinted polymers provide an alternative to traditional methods of amino acid analysis. The imprinted polymers are more robust and significantly less expensive than, for example, ELISA analysis. Amino acid imprinted nylon-6 thin films were studied by differential scanning calorimetry and scanning electron microscopy. Endothermic peaks were observed for imprinted films at temperatures higher than that for pure nylon, indicating the formation of a more-ordered, hydrogen bonded polymer. Removal of the amino acid from the imprinted film resulted in reversion to the peak observed for pure nylon-6. Additives, β-cyclodextrin and multiwalled carbon nanotubes, were added to the imprinted polymer solutions as a means to increase the porosity of the films. These studies resulted in alternative morphologies and calorimetric results that provide additional functionalities and applications for imprinted polymers.
Collapse
Affiliation(s)
- Ziyi Chai
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA
| | | |
Collapse
|
12
|
Dourado EMA, Herdes C, van Tassel PR, Sarkisov L. Molecular recognition effects in atomistic models of imprinted polymers. Int J Mol Sci 2011; 12:4781-804. [PMID: 21954325 PMCID: PMC3179132 DOI: 10.3390/ijms12084781] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Revised: 07/08/2011] [Accepted: 07/25/2011] [Indexed: 12/02/2022] Open
Abstract
In this article we present a model for molecularly imprinted polymers, which considers both complexation processes in the pre-polymerization mixture and adsorption in the imprinted structures within a single consistent framework. As a case study we investigate MAA/EGDMA polymers imprinted with pyrazine and pyrimidine. A polymer imprinted with pyrazine shows substantial selectivity towards pyrazine over pyrimidine, thus exhibiting molecular recognition, whereas the pyrimidine imprinted structure shows no preferential adsorption of the template. Binding sites responsible for the molecular recognition of pyrazine involve one MAA molecule and one EGDMA molecule, forming associations with the two functional groups of the pyrazine molecule. Presence of these specific sites in the pyrazine imprinted system and lack of the analogous sites in the pyrimidine imprinted system is directly linked to the complexation processes in the pre-polymerization solution. These processes are quite different for pyrazine and pyrimidine as a result of both enthalpic and entropic effects.
Collapse
Affiliation(s)
- Eduardo M. A. Dourado
- Institute for Materials and Processes, School of Engineering, University of Edinburgh, Edinburgh, Midlothian EH9 3JL, UK; E-Mail:
| | - Carmelo Herdes
- Centro de Química de Évora, Universidade de Évora, Rua Romão Romalho 59, 7000 Évora, Portugal; E-Mail:
| | - Paul R. van Tassel
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT 06520-8286, USA; E-Mail:
| | - Lev Sarkisov
- Institute for Materials and Processes, School of Engineering, University of Edinburgh, Edinburgh, Midlothian EH9 3JL, UK; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +44-131-650-4862
| |
Collapse
|