1
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Shakya AK. Functionalized cryogel monoliths for fast and selective separation of nucleic acids directly from crude lysate. Biomed Chromatogr 2022; 36:e5333. [DOI: 10.1002/bmc.5333] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/10/2021] [Accepted: 01/03/2022] [Indexed: 11/10/2022]
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2
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Henry P, Halbus AF, Athab ZH, Paunov VN. Enhanced Antimould Action of Surface Modified Copper Oxide Nanoparticles with Phenylboronic Acid Surface Functionality. Biomimetics (Basel) 2021; 6:19. [PMID: 33804236 PMCID: PMC8006150 DOI: 10.3390/biomimetics6010019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 03/02/2021] [Accepted: 03/09/2021] [Indexed: 11/17/2022] Open
Abstract
Antimould agents are widely used in different applications, such as specialty paints, building materials, wood preservation and crop protection. However, many antimould agents can be toxic to the environment. This work aims to evaluate the application of copper oxide nanoparticles (CuONPs) surface modified with boronic acid (BA) terminal groups as antimould agents. We developed CuONPs grafted with (3-glycidyloxypropyl) trimethoxysilane (GLYMO), coupled with 4-hydroxyphenylboronic acid (4-HPBA), which provided a strong boost of their action as antimould agents. We studied the antimould action of the 4-HPBA-functionalized CuONPs against two mould species: Aspergillus niger (A. niger) and Penicillium chrysogenum (P. chrysogenum). The cis-diol groups of polysaccharides expressed on the mould cell walls can form reversible covalent bonds with the BA groups attached on the CuONPs surface. This allowed them to bind strongly to the mould surface, resulting in a very substantial boost of their antimould activity, which is not based on electrostatic adhesion, as in the case of bare CuONPs. The impact of these BA-surface functionalized nanoparticles was studied by measuring the growth of the mould colonies versus time. The BA-functionalized CuONPs showed significant antimould action, compared to the untreated mould sample at the same conditions and period of time. These results can be applied for the development of more efficient antimould treatments at a lower concentration of active agent with potentially substantial economic and environmental benefits.
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Affiliation(s)
- Patricia Henry
- Department of Chemistry and Biochemistry, University of Hull, Hull HU67RX, UK; (P.H.); (A.F.H.); (Z.H.A.)
| | - Ahmed F. Halbus
- Department of Chemistry and Biochemistry, University of Hull, Hull HU67RX, UK; (P.H.); (A.F.H.); (Z.H.A.)
- Department of Chemistry, College of Science, University of Babylon, Hilla 51001, Iraq
| | - Zahraa H. Athab
- Department of Chemistry and Biochemistry, University of Hull, Hull HU67RX, UK; (P.H.); (A.F.H.); (Z.H.A.)
- Environmental Research Center, University of Babylon, Hilla 51001, Iraq
| | - Vesselin N. Paunov
- Department of Chemistry and Biochemistry, University of Hull, Hull HU67RX, UK; (P.H.); (A.F.H.); (Z.H.A.)
- Department of Chemistry, Nazarbayev University, Nursultan 010000, Kazakhstan
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3
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Highly Porous, Molecularly Imprinted Core–Shell Type Boronate Affinity Sorbent with a Large Surface Area for Enrichment and Detection of Sialic Acid Isomers. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-01890-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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4
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Kip C, Hamaloğlu KÖ, Demir C, Tuncel A. Recent trends in sorbents for bioaffinity chromatography. J Sep Sci 2021; 44:1273-1291. [PMID: 33370505 DOI: 10.1002/jssc.202001117] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 12/24/2022]
Abstract
Isolation or enrichment of biological molecules from complex biological samples is mostly a prerequisite in proteomics, genomics, and glycomics. Different techniques have been used to advance the efficiency of the purification of biological molecules. Bioaffinity chromatography is one of the most powerful technique that plays an important role in the isolation of target biological molecules by the specific interactions with ligands that are immobilized on different support materials. This review examines the recent developments in bioaffinity chromatography particularly over the past 5 years in the literature. Also properties of supports, immobilization techniques, types of binding agents, and methods used in bioaffinity chromatography applications are summarized.
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Affiliation(s)
- Cigdem Kip
- Chemical Engineering Department, Hacettepe University, Ankara, Turkey
| | | | - Cihan Demir
- Chemical Engineering Department, Hacettepe University, Ankara, Turkey.,Nanotechnology and Nanomedicine Division, Hacettepe University, Ankara, Turkey
| | - Ali Tuncel
- Chemical Engineering Department, Hacettepe University, Ankara, Turkey
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5
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Ji W, Ao W, Sun M, Feng C, Wang Y. Separation and purification of horseradish peroxidase from horseradish roots using a novel integrated method. NEW J CHEM 2021. [DOI: 10.1039/d0nj04614k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The aim of the present work was to develop a novel method integrating two-step aqueous two-phase extraction and temperature-controlled affinity precipitation for the separation and purification of horseradish peroxidase (HRP) from horseradish roots.
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Affiliation(s)
- Wei Ji
- School of Medicine
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Wenmei Ao
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Mengqiu Sun
- School of Pharmacy
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Chunlai Feng
- School of Pharmacy
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Yun Wang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
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6
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Fuchs S, Ernst AU, Wang LH, Shariati K, Wang X, Liu Q, Ma M. Hydrogels in Emerging Technologies for Type 1 Diabetes. Chem Rev 2020; 121:11458-11526. [DOI: 10.1021/acs.chemrev.0c01062] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Stephanie Fuchs
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Alexander U. Ernst
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Long-Hai Wang
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Kaavian Shariati
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Xi Wang
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Qingsheng Liu
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Minglin Ma
- Biological and Environmental Engineering, Cornell University, Ithaca, New York 14853, United States
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7
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Süngü Ç, Kip Ç, Tuncel A. Molecularly imprinted polymeric shell coated monodisperse-porous silica microspheres as a stationary phase for microfluidic boronate affinity chromatography. J Sep Sci 2019; 42:1962-1971. [PMID: 30900808 DOI: 10.1002/jssc.201801258] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 03/17/2019] [Accepted: 03/19/2019] [Indexed: 12/11/2022]
Abstract
Molecular imprinting of cis-diol functionalized agents via boronate affinity interaction has been usually performed using nanoparticles as a support which cannot be utilized as a stationary phase in continuous microcolumn applications. In this study, monodisperse-porous, spherical silica particles in the micron-size range, with bimodal pore diameter distribution were selected as a new support for the synthesis of a molecularly imprinted boronate affinity sorbent, using a cis-diol functionalized agent as the template. A specific surface area of 158 m2 /g was achieved with the imprinted sorbent by using monodisperse-porous silica microspheres containing both mesoporous and macroporous compartments as the support. High porosity originating from the macroporous compartment and sufficiently high particle size provided good column permeability to the imprinted sorbent in microcolumn applications. The mesoporous compartment provided a large surface area for the parking of imprinted molecules while the macroporous compartment facilitated the intraparticular diffusion of imprinted target within the microsphere interior. A microfluidic boronate affinity system was first constructed by using molecularly imprinted polymeric shell coated monodisperse-porous silica microspheres as a stationary phase. The synthetic route for the imprinting process, the reversible adsorption/ desorption behavior of selected target and the selectivity of imprinted sorbent in both batch and microfluidic boronate affinity chromatography systems are reported.
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Affiliation(s)
| | - Çiğdem Kip
- Department of Chemical Engineering, Hacettepe University, Ankara, Turkey
| | - Ali Tuncel
- Department of Chemical Engineering, Hacettepe University, Ankara, Turkey
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8
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Kip Ç, Gülüşür H, Çelik E, Usta DD, Tuncel A. Isolation of RNA and beta-NAD by phenylboronic acid functionalized, monodisperse-porous silica microspheres as sorbent in batch and microfluidic boronate affinity systems. Colloids Surf B Biointerfaces 2018; 174:333-342. [PMID: 30472619 DOI: 10.1016/j.colsurfb.2018.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 11/04/2018] [Accepted: 11/05/2018] [Indexed: 12/18/2022]
Abstract
Monodisperse-porous silica microspheres 5.5 μm in size were obtained by a staged shape templated hydrolysis-condensation method, with a bimodal pore-size distribution. 3-aminophenylboronic acid (APBA) was covalently attached onto the silica microspheres with a capacity of 0.476 mmol APBA/g microspheres. The boronate affinity isolation behaviour of ribonucleic acid (RNA) containing cis-diol at 3'-end was investigated by using APBA attached-silica microspheres as the sorbent in batch fashion. A short-chain diol carrying agent, β-nicotinamide adenine dinucleotide (β-NAD) was used as a target molecule with stronger affinity for phenylboronic acid ligand. The maximum equilibrium adsorptions for RNA and β-NAD were determined as 60 and 159 mg/g sorbent, respectively. By using the synthesized sorbent, phosphate buffer at pH 7.0 containing sorbitol was successfuly used as a mild elution medium for obtaining quantitative desorptions with both RNA and β-NAD. RNA isolations from mammalian and bacterial cells were successfully performed while protecting the structural integrity of RNA via boronate affinity interaction in batch fashion. A microfluidic boronate affinity system including a microcolumn 300 μm in diameter was also constructed using APBA attached-silica microspheres as the stationary phase. The breakthrough curves of microfluidic system were obtained by studying with different feed concentrations of RNA and β-NAD. Quantitative desorptions and satisfactory isolation yields were obtained with RNA and β-NAD in the microfluidic system. The proposed system is useful for boronate affinity applications in genomics or proteomics in which valuable cis-diols at low concentrations are recovered from low-volume samples.
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Affiliation(s)
- Çiğdem Kip
- Hacettepe University, Chemical Engineering Department, 06800, Ankara, Turkey
| | - Hilal Gülüşür
- Hacettepe University, Institute of Science, Division of Nanotechnology and Nanomedicine, 06800, Ankara, Turkey
| | - Eda Çelik
- Hacettepe University, Chemical Engineering Department, 06800, Ankara, Turkey; Hacettepe University, Institute of Science, Division of Bioengineering, 06800, Ankara, Turkey
| | - Duygu Deniz Usta
- Department of Medical Biology and Genetics, Gazi University, 06500, Ankara, Turkey; Department of Medical Biology, Istanbul Medeniyet University, 34700, Istanbul, Turkey
| | - Ali Tuncel
- Hacettepe University, Chemical Engineering Department, 06800, Ankara, Turkey.
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9
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Varyambath A, Tran CH, Song WL, Kim I. Hyper-Cross-Linked Polypyrene Spheres Functionalized with 3-Aminophenylboronic Acid for the Electrochemical Detection of Diols. ACS OMEGA 2017; 2:7506-7514. [PMID: 31457312 PMCID: PMC6645325 DOI: 10.1021/acsomega.7b01107] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/26/2017] [Indexed: 05/04/2023]
Abstract
A sensor for the determination of diols using 3-aminophenylboronic acid (APBA)-functionalized hyper-cross-linked polypyrene (PPy) (APBA@PPy) is presented. The uniform (∼1 μm in diameter) and highly porous (628 m2 g-1 in specific surface area) PPy spheres are fabricated via a one-pot protocol that consists of ZnBr2-catalyzed alkylation of pyrene, a subsequent cross-linking reaction, and concomitant self-assembly. The PPy spheres formed within a few minutes at mild conditions are featured by an excellent structural integrity and inertness to organic solvents. Thus, the APBA@PPy composites (∼1 μm in diameter; 458 m2 g-1 in specific surface area) are prepared simply by substituting unreacted bromomethyl groups on the surface of PPy spheres for APBA. The APBA@PPy composites are successfully applied for the electrochemical sensing of d-glucose and dopamine. A dye displacement assay is also performed using alizarin red dye conjugated to boronic acid in glucose buffer solution.
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Affiliation(s)
- Anuraj Varyambath
- Department Polymer Science
and Engineering, BK21 PLUS Center for Advanced Chemical Technology, Pusan National University, Busan 609-735, Republic of Korea
| | - Chinh Hoang Tran
- Department Polymer Science
and Engineering, BK21 PLUS Center for Advanced Chemical Technology, Pusan National University, Busan 609-735, Republic of Korea
| | - Wen Liang Song
- Department Polymer Science
and Engineering, BK21 PLUS Center for Advanced Chemical Technology, Pusan National University, Busan 609-735, Republic of Korea
| | - Il Kim
- Department Polymer Science
and Engineering, BK21 PLUS Center for Advanced Chemical Technology, Pusan National University, Busan 609-735, Republic of Korea
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10
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Brooks WLA, Vancoillie G, Kabb CP, Hoogenboom R, Sumerlin BS. Triple responsive block copolymers combining pH‐responsive, thermoresponsive, and glucose‐responsive behaviors. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28615] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- William L. A. Brooks
- George and Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science and Engineering, Department of ChemistryUniversity of FloridaGainesville Florida32611‐7200
| | - Gertjan Vancoillie
- George and Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science and Engineering, Department of ChemistryUniversity of FloridaGainesville Florida32611‐7200
- Department of Organic and Macromolecular ChemistryGhent UniversityKrijgslaanGhent281 S4 Belgium
| | - Christopher P. Kabb
- George and Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science and Engineering, Department of ChemistryUniversity of FloridaGainesville Florida32611‐7200
| | - Richard Hoogenboom
- Department of Organic and Macromolecular ChemistryGhent UniversityKrijgslaanGhent281 S4 Belgium
| | - Brent S. Sumerlin
- George and Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science and Engineering, Department of ChemistryUniversity of FloridaGainesville Florida32611‐7200
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11
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Abstract
Aminophenyl boronic acid (APBA) modified hydrogel beads were prepared as a new sorbent for nucleotide isolation. Spherical hydrogel beads, obtained by suspension copolymerization, were the base material for the sorbent. The carboxyl groups on the gel bead surface were activated with a water soluble carbodiimide, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC). APBA was then covalently attached to the activated structure via the amine groups. The maximum APBA attached to the gel was 34mg/g. The reversible adsorption-desorption behavior of β-nicotinamide adenine dinucleotide (β-NAD) was investigated by using 3.5 and 34mg/g of APBA on the hydrogel beads. The equilibrium -NAD adsorption capacities for these beads were determined as approximately 25 and 100mg/g, respectively. The -NAD absorption capacity of these APBA beads is significantly greater than similar supports.
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Affiliation(s)
- Hüseyin ÇIçek
- Engineering Development Group, Roketsan Corporation, Elmadag, Ankara, Turkey,
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12
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Affinity approaches in RNAi-based therapeutics purification. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1021:45-56. [DOI: 10.1016/j.jchromb.2016.01.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 01/05/2016] [Accepted: 01/12/2016] [Indexed: 02/07/2023]
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13
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Davletbaeva I, Nurgaliyeva GR, Akhmetshina AI, Davletbaev RS, Atlaskin AA, Sazanova TS, Efimov SV, Klochkov VV, Vorotyntsev IV. Porous polyurethanes based on hyperbranched amino ethers of boric acid. RSC Adv 2016. [DOI: 10.1039/c6ra21638b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Novel polyurethanes with hierarchical supramolecular structure were synthesized via polyaddition reaction of amino ethers of boric acid and polyisocyanate.
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Affiliation(s)
- I. M. Davletbaeva
- Nizhny Novgorod State Technical University n.a. R. E. Alekseev
- Nizhny Novgorod 603950
- Russian Federation
- Kazan National Research Technological University
- Kazan 420015
| | - G. R. Nurgaliyeva
- Kazan National Research Technological University
- Kazan 420015
- Russian Federation
| | - A. I. Akhmetshina
- Nizhny Novgorod State Technical University n.a. R. E. Alekseev
- Nizhny Novgorod 603950
- Russian Federation
- Kazan National Research Technological University
- Kazan 420015
| | - R. S. Davletbaev
- Nizhny Novgorod State Technical University n.a. R. E. Alekseev
- Nizhny Novgorod 603950
- Russian Federation
- Kazan National Research Technical University n.a. A. N. Tupolev – KAI
- Kazan 420111
| | - A. A. Atlaskin
- Nizhny Novgorod State Technical University n.a. R. E. Alekseev
- Nizhny Novgorod 603950
- Russian Federation
| | - T. S. Sazanova
- Nizhny Novgorod State Technical University n.a. R. E. Alekseev
- Nizhny Novgorod 603950
- Russian Federation
| | - S. V. Efimov
- Kazan Federal University
- Kazan 420008
- Russian Federation
| | | | - I. V. Vorotyntsev
- Nizhny Novgorod State Technical University n.a. R. E. Alekseev
- Nizhny Novgorod 603950
- Russian Federation
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14
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Shakya AK, Srivastava A, Kumar A. Polymeric Cryogel‐Based Boronate Affinity Chromatography for Separation of Ribonucleic Acid from Bacterial Extracts. ACTA ACUST UNITED AC 2015; 63:10.16.1-10.16.10. [DOI: 10.1002/0471142700.nc1016s63] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Akshay Srivastava
- Network of Excellence for Functional Biomaterials, National University of Ireland Galway Republic of Ireland
| | - Ashok Kumar
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur Kanpur (U.P) India
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15
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Li D, Chen Y, Liu Z. Boronate affinity materials for separation and molecular recognition: structure, properties and applications. Chem Soc Rev 2015; 44:8097-123. [PMID: 26377373 DOI: 10.1039/c5cs00013k] [Citation(s) in RCA: 355] [Impact Index Per Article: 39.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Boronate affinity materials, as unique sorbents, have emerged as important media for the selective separation and molecular recognition of cis-diol-containing compounds. With the introduction of boronic acid functionality, boronate affinity materials exhibit several significant advantages, including broad-spectrum selectivity, reversible covalent binding, pH-controlled capture/release, fast association/desorption kinetics, and good compatibility with mass spectrometry. Because cis-diol-containing biomolecules, including nucleosides, saccharides, glycans, glycoproteins and so on, are the important targets in current research frontiers such as metabolomics, glycomics and proteomics, boronate affinity materials have gained rapid development and found increasing applications in the last decade. In this review, we critically survey recent advances in boronate affinity materials. We focus on fundamental considerations as well as important progress and new boronate affinity materials reported in the last decade. We particularly discuss on the effects of the structure of boronate ligands and supporting materials on the properties of boronate affinity materials, such as binding pH, affinity, selectivity, binding capacity, tolerance for interference and so on. A variety of promising applications, including affinity separation, proteomics, metabolomics, disease diagnostics and aptamer selection, are introduced with main emphasis on how boronate affinity materials can solve the issues in the applications and what merits boronate affinity materials can provide.
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Affiliation(s)
- Daojin Li
- State Key Laboratory of Analytical Chemistry for Life Science and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China.
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16
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Ulasan M, Yavuz E, Cengeloglu Y, Yavuz MS. Facile synthesis of boronic acid-functionalized nanocarriers for glucose-triggered caffeic acid release. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1393-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Penhasi A. Microencapsulation of probiotic bacteria using thermo-sensitive sol-gel polymers for powdered infant formula. J Microencapsul 2015; 32:372-80. [PMID: 26004368 DOI: 10.3109/02652048.2015.1028497] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study the application of thermo-sensitive sol-gel polymers in microencapsulation formulation of probiotic bacteria, Bifidobacterium animalis spp lactis, for powdered infant formula (PIF), which is reconstituted at 70 °C, has been assessed. A double-layered microcapsule containing hydroxypropyl methyl cellulose (HPMC) as an inner layer and an outer layer, as the smart coating layer, based on a combination of hydroxypropyl cellulose (HPC) and poloxamer was designed. Generally, this specific microencapsulation provided superior protection against the reconstitution temperature. A high molecular weight of HPC and a greater thickness of the smart coating layer resulted in a delayed release of the bacteria from the microcapsules especially in the PIF composition. However, this was compensated by a high stability of the bacteria at 70 °C. Both the surface texture and particle size distribution of microcapsules have been respectively characterised by scanning electron microscopy and particle size analysis.
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Affiliation(s)
- Adel Penhasi
- Department of Pharmaceutical Engineering, Azrieli - College of Engineering , Jerusalem , Israel and
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18
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Man Y, Peng G, Wang J, Lv X, Deng Y. Microfluidic chip with thermoresponsive boronate affinity for the capture-release ofcis-diol biomolecules. J Sep Sci 2014; 38:339-45. [DOI: 10.1002/jssc.201400725] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 09/05/2014] [Accepted: 10/27/2014] [Indexed: 01/18/2023]
Affiliation(s)
- Yan Man
- School of Life Science; Beijing Institute of Technology; Beijing China
| | - Guang Peng
- School of Life Science; Beijing Institute of Technology; Beijing China
| | - Jianshe Wang
- School of Life Science; Beijing Institute of Technology; Beijing China
| | - Xuefei Lv
- School of Life Science; Beijing Institute of Technology; Beijing China
| | - Yulin Deng
- School of Life Science; Beijing Institute of Technology; Beijing China
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19
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Kuru Cİ, Türkcan C, Uygun M, Okutucu B, Akgöl S. Preparation and characterization of silanized poly(HEMA) nanoparticles for recognition of sugars. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 44:835-41. [DOI: 10.3109/21691401.2014.984302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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20
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Okutucu B, Vurmaz D, Tuncal A, Türkcan C, Aktaş Uygun D, Akgöl S. Boronate affinity nanoparticles for nucleoside separation. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2014; 44:322-7. [DOI: 10.3109/21691401.2014.948550] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Boronic acid functionalized polymeric microspheres for catecholamine isolation. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Silanized polymeric nanoparticles for DNA isolation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:4498-503. [DOI: 10.1016/j.msec.2013.05.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 03/15/2013] [Accepted: 05/07/2013] [Indexed: 11/21/2022]
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23
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Martin AR, Vasseur JJ, Smietana M. Boron and nucleic acid chemistries: merging the best of both worlds. Chem Soc Rev 2013; 42:5684-713. [DOI: 10.1039/c3cs60038f] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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24
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Srivastava A, Shakya AK, Kumar A. Boronate affinity chromatography of cells and biomacromolecules using cryogel matrices. Enzyme Microb Technol 2012; 51:373-81. [DOI: 10.1016/j.enzmictec.2012.08.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 08/15/2012] [Accepted: 08/16/2012] [Indexed: 01/27/2023]
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Liu Z, Ullah K, Su L, Lv F, Deng Y, Dai R, Li Y, Zhang Y. Switchable boronate affinity materials for thermally modulated capture, separation and enrichment of cis-diol biomolecules. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33578f] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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26
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Yavuz MS, Buyukserin F, Zengin Z, Camli ST. Thermoresponsive oligo(ethylene glycol) methacrylate colloids with antifouling surface properties. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24927] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Mustafa Selman Yavuz
- Department of Metallurgical and Materials Engineering, Selcuk University, Konya, Turkey
- Advanced Technology Research and Application Center, Selcuk University, Konya, Turkey
| | - Fatih Buyukserin
- Department of Biomedical Engineering, TOBB University of Economics and Technology, Ankara, Turkey
| | - Zuleyha Zengin
- Nanomedicine and Advanced Technologies Research Center, Gazi University, Ankara, Turkey
| | - Sevket Tolga Camli
- Nanomedicine and Advanced Technologies Research Center, Gazi University, Ankara, Turkey
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Cakal C, Ferrance JP, Landers JP, Caglar P. Microchip extraction of catecholamines using a boronic acid functional affinity monolith. Anal Chim Acta 2011; 690:94-100. [DOI: 10.1016/j.aca.2011.02.009] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 01/29/2011] [Accepted: 02/02/2011] [Indexed: 11/24/2022]
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28
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Cui C, Bonder EM, Qin Y, Jäkle F. Synthesis and solvent-dependent micellization of the amphiphilic block copolymer poly(styreneboronic acid)-block-polystyrene. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24014] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Preinerstorfer B, Lämmerhofer M, Lindner W. Synthesis and application of novel phenylboronate affinity materials based on organic polymer particles for selective trapping of glycoproteins. J Sep Sci 2009; 32:1673-85. [PMID: 19472289 DOI: 10.1002/jssc.200800679] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report on synthesis concepts for the fabrication of various novel phenylboronate affinity materials based on polymethacrylate epoxy beads (Fractogel EMD Epoxy (M) 40-90 microm) and the testing of these functionalized polymer particles for selective trapping of a glycoprotein from a standard mixture containing a glycosylated and a nonglycosylated protein. Two inherently different approaches for the functionalization of the bare beads with boronate groups have been elucidated. In the first, the epoxy residues of the polymer particles were converted into reactive thiol groups which were subsequently used as anchor moieties for the immobilization of 4-vinylphenylboronic acid by radical addition or radical polymerization reaction. Three different ways for the generation of sulfhydryl groups have been examined leading to materials with distinct linker chemistries. In the second and more straightforward approach, the epoxy groups were reacted with 4-mercaptophenylboronic acid. The novel materials were thoroughly characterized by (i) quantitation of the sulfur content by elemental analysis, (ii) reactive sulfhydryls were determined in a photospectrometric assay, (iii) boron content was measured by inductively coupled plasma-atomic emission spectrometry, and (iv) the amount of reactive boronate groups was evaluated in a fast binding assay employing adenosine as test compound. A maximum concentration of 1.2 mmol boronate groups per gram dry beads could be achieved by the presented synthesis routes. Employing the novel phenylboronate affinity materials in capture and release experiments in the batch mode, a standard glycoprotein, viz. transferrin (Tf) from human serum was separated from a nonglycosylated protein, BSA. A commercial boronate affinity material based on 3-aminophenylboronic acid modified agarose gel was employed as reference material and was found to perform significantly worse compared to the herein presented novel polymethacrylate particles.
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Affiliation(s)
- Beatrix Preinerstorfer
- Christian Doppler Laboratory for Molecular Recognition Materials, Department of Analytical Chemistry and Food Chemistry, University of Vienna, Vienna, Austria
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Mohapatra S, Panda N, Pramanik P. Boronic acid functionalized superparamagnetic iron oxide nanoparticle as a novel tool for adsorption of sugar. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2009.05.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Hoare T, Pelton R. Charge-switching, amphoteric glucose-responsive microgels with physiological swelling activity. Biomacromolecules 2008; 9:733-40. [PMID: 18198833 DOI: 10.1021/bm701203r] [Citation(s) in RCA: 134] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amphoteric, poly(N-isopropylacrylamide)-based microgels are functionalized with aminophenylboronic acid (PBA) functional groups to produce colloidally stable, glucose-responsive gel nanoparticles that exhibit glucose-dependent swelling responses at physiological temperature, pH, and ionic strength. Up to 2-fold volumetric swelling responses are observed in response to physiological glucose concentrations, the first such physiological response reported for a colloidally stable microgel. Amphoteric microgels can also be designed to both swell and deswell in response to glucose according to the pH of the medium, the concentration of PBA groups grafted to the microgel, and the relative concentrations of the cationic and anionic functional groups in the platform microgel. The increasing anionic charge density on the microgels observed at higher glucose binding fractions can be applied to switch the net charge of the microgels from cationic to anionic as the glucose concentration increases. Preliminary experiments suggest that such amphoteric PBA-microgels have a high capacity for insulin uptake and can selectively release more insulin at higher glucose concentrations under physiological conditions via glucose-induced, "on-off" switching of electrostatic attractions between insulin and the microgel.
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Affiliation(s)
- Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario, Canada L8S 4L7.
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32
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Elmas B, Tuncel M, Senel S, Patir S, Tuncel A. Hydroxyl functionalized thermosensitive microgels with quadratic crosslinking density distribution. J Colloid Interface Sci 2007; 313:174-83. [PMID: 17532327 DOI: 10.1016/j.jcis.2007.04.052] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2007] [Revised: 04/08/2007] [Accepted: 04/17/2007] [Indexed: 11/16/2022]
Abstract
N-isopropylacrylamide (NIPA) based uniform thermosensitive microgels were synthesized by dispersion polymerization by using relatively hydrophilic crosslinking agents with hydroxyl functionality. Glycerol dimethacrylate (GDMA), pentaerythritol triacrylate (PETA) and pentaerythritol propoxylate triacrylate (PEPTA) were used as crosslinking agents with different hydrophilicities. A protocol was first proposed to determine the crosslinking density distribution in the thermosensitive microgel particles by confocal laser scanning microscopy (CLSM). The microgels were fluorescently labeled by using hydroxyl group of the crosslinking agent. The CLSM observations performed with the microgels synthesized by three different crosslinking agents showed that the crosslinking density exhibited a quadratic decrease with the increasing radial distance in the spherical microgel particles. This structure led to the formation of more loose gel structure on the particle surface with respect to the center. Then the use of hydrophilic crosslinking agents in the dispersion polymerization of NIPA made possible the synthesis of thermosensitive microgels carrying long, flexible and chemically derivatizable (i.e., hydroxyl functionalized) fringes on the surface by a single-stage dispersion polymerization. The microgels with all crosslinking agents exhibited volume phase transition with the increasing temperature. The microgel obtained by the most hydrophilic crosslinking agent, GDMA exhibited higher hydrodynamic diameters in the fully swollen form at low temperatures than those obtained by PETA and PEPTA. Higher hydrodynamic size decrease from fully swollen form to the fully shrunken form was also observed with the same microgel.
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Affiliation(s)
- Begum Elmas
- Hacettepe University, Department of Chemistry, Ankara, Turkey
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33
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Rzaev ZM, Dinçer S, Pişkin E. Functional copolymers of N-isopropylacrylamide for bioengineering applications. Prog Polym Sci 2007. [DOI: 10.1016/j.progpolymsci.2007.01.006] [Citation(s) in RCA: 445] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Qin Y, Cui C, Jäkle F. Silylated Initiators for the Efficient Preparation of Borane-End-Functionalized Polymers via ATRP. Macromolecules 2007. [DOI: 10.1021/ma061704h] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Qin
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Chengzhong Cui
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
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35
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A new thermosensitive fluorescent probe for diol sensing: Poly(N-isopropylacrylamide-co-vinylphenylboronic acid)-alizarin red S complex. REACT FUNCT POLYM 2007. [DOI: 10.1016/j.reactfunctpolym.2006.09.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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36
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Formation of Polymeric Lewis Acid–Lewis Base Complexes with Well-defined Organoboron Polymers. J Inorg Organomet Polym Mater 2007. [DOI: 10.1007/s10904-006-9084-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Hoare T, Pelton R. Engineering Glucose Swelling Responses in Poly(N-isopropylacrylamide)-Based Microgels. Macromolecules 2007. [DOI: 10.1021/ma062254w] [Citation(s) in RCA: 227] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario, Canada L8S 4L7
| | - Robert Pelton
- Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, Ontario, Canada L8S 4L7
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38
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Ge H, Ding Y, Ma C, Zhang G. Temperature-Controlled Release of Diols fromN-Isopropylacrylamide-co-Acrylamidophenylboronic Acid Microgels. J Phys Chem B 2006; 110:20635-9. [PMID: 17034253 DOI: 10.1021/jp060914t] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
N-Isopropylacrylamide-co-acrylamidophenylboronic acid (NIPAM-co-PBA) microgels were prepared by free radical polymerization in water. The release of glucose and Alizarin Red S (ARS) from the microgels as a function of temperature has been investigated by using laser light scattering (LLS) and ultrasensitive differential scanning calorimetry (US-DSC). Such microgels can bind glucose and ARS via boronic acids at a lower temperature. As the temperature increases, the microgels shrink, and the diols are released. The release could be controlled by temperature. The effect of the structure of the microgels on the release is also discussed.
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Affiliation(s)
- Hui Ge
- Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui, China
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39
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Ivanov AE, Shiomori K, Kawano Y, Galaev IY, Mattiasson B. Effects of polyols, saccharides, and glycoproteins on thermoprecipitation of phenylboronate-containing copolymers. Biomacromolecules 2006; 7:1017-24. [PMID: 16602716 DOI: 10.1021/bm050208i] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The copolymer of 3-(acrylamido)phenylboronic acid and N-isopropylacrylamide (82:18, Mn = 47000 g/mol) was prepared by free radical polymerization. The copolymer showed typical thermoprecipitation behavior in aqueous solutions; its phase transition temperature (TP) was 26.5 +/- 0.2 degrees C in 0.1 M glycine-NaOH buffer containing 0.1 M NaCl, pH 9.2. Due to specific complex formation of the pendant boronates with sugars, TP was strongly affected by the type of sugar and its concentration at pH 9.2. Fructose, lactulose, and glucose caused the largest increase in TP (up to 4 degrees C) at 0.56 mM concentration, attributed to the high binding affinity of the sugars to borate and phenylboronate. Among the sugars typical of nonreducing ends of oligosaccharides, N-acetylneuraminic acid had the strongest effect on TP (ca. 2 degrees C at 0.56 mM concentration and pH 9.2), while the effects of other sugars are well expressed at the higher concentrations (16 and 80 mM) and decreased in the order xylose approximately galactose >or= N-acetyllactosamine >or= mannose approximately fucose >> N-acetylglucosamine. The effect exerted on the phase transition by glycoproteins was the strongest with mucin from porcine stomach and decreased in the series mucin > horseradish peroxidase > human gamma-globulin at pH 9.2. As a first approximation, the weight percentage and/or the number of oligosaccharides in glycoproteins determined the character of their interaction with the pendant phenylboronates and, therefore, the effect on the copolymer phase transition.
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Affiliation(s)
- Alexander E Ivanov
- Department of Biotechnology, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
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40
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Effect of thiol-containing monomer on the preparation of temperature-sensitive hydrogel microspheres. Colloid Polym Sci 2006; 284:1287-1292. [PMID: 24058238 PMCID: PMC3776253 DOI: 10.1007/s00396-006-1514-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2006] [Accepted: 04/18/2006] [Indexed: 11/21/2022]
Abstract
The main objective of this study is to prepare, thermally, sensitive microgel particles bearing thiol groups via precipitation polymerization of N-isopropylacrylamide (NIPAM), methylenebisacrylamide (MBA) and vinylbenzylisothiouronium chloride (VBIC) using 2-2′-azobis(2-amidinopropane)-dihydrochloride (V50) as initiator. The influence of various parameters has been investigated as a systematic study to point out the role of each reactant on polymerization conversion, and consequently, on particles and water-soluble polymer formation. The final microgel particles were characterized with respect to particle size and swelling ability. The aim of this paper is to complete our first short communication; Macromolecular symposia, 2000. 150: p. 283–290.
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41
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Eke I, Elmas B, Tuncel M, Tuncel A. A new, highly stable cationic-thermosensitive microgel: Uniform isopropylacrylamide-dimethylaminopropylmethacrylamide copolymer particles. Colloids Surf A Physicochem Eng Asp 2006. [DOI: 10.1016/j.colsurfa.2006.01.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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42
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Şölener M, Uğuzdoğan E, Nurbaş M, Çamlı T, Kabasakal O, Patır S, Tuncel A. A novel thermoresponsive hydrogel matrix based on poly(N-ethoxypropylacrylamide). Polym Bull (Berl) 2006. [DOI: 10.1007/s00289-006-0570-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Elmas B, Tuncel M, Yalçın G, Şenel S, Tuncel A. Synthesis of uniform, fluorescent poly(glycidyl methacrylate) based particles and their characterization by confocal laser scanning microscopy. Colloids Surf A Physicochem Eng Asp 2005. [DOI: 10.1016/j.colsurfa.2005.07.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Qin Y, Sukul V, Pagakos D, Cui C, Jäkle F. Preparation of Organoboron Block Copolymers via ATRP of Silicon and Boron-Functionalized Monomers. Macromolecules 2005. [DOI: 10.1021/ma051615p] [Citation(s) in RCA: 103] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yang Qin
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Vishad Sukul
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Dimitrios Pagakos
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Chengzhong Cui
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University Newark, 73 Warren Street, Newark, New Jersey 07102
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46
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Ivanov AE, Galaev IY, Mattiasson B. Binding of Adenosine to Pendant Phenylboronate Groups of Thermoresponsive Copolymer: a Quantitative Study. Macromol Biosci 2005; 5:795-800. [PMID: 16096993 DOI: 10.1002/mabi.200500035] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Binding of adenosine to the thermosensitive copolymer of N-isopropylacrylamide and 3-(acrylamido)aminophenylboronic acid (82:18, Mn = 47,000 g . mol(-1)) was studied by equilibrium dialysis at 22 degrees C and 37 degrees C, in a 0.1 M glycine buffer containing 0.1 M NaCl at pH 9.2. The copolymer exhibited a the phase transition temperature (T(p)) of 26.5 degrees C under the above conditions. At 22 degrees C the binding of adenosine to the water-soluble copolymer was well described by a Langmuir model, accounting for preferential ionisation of the boronate-nucleoside complexes and, therefore, restricted reactivity of the rest of boronates. At saturation, the copolymer contained 38% of its phenylboronic acid groups in the form of complexes, whereas the association constant was 1,400 M(-1). At 37 degrees C no binding of adenosine to thermally precipitated copolymer was found, presumably owing to interaction of the phenylboronates with hydrophobic segments of polyNIPAM. At high loading of the copolymer by the reversibly bound adenosine the T(p) steeply increases with increasing fraction of the phenylboronate-adenosine complexes in the chains. The increase of the T(p) observed above the saturating adenosine concentration (>1 x 10(-3) M, 22 degrees C) very probably testifies to competition of the nucleoside with hydrophobic polyNIPAM segments for binding to the pendant phenylboronates.
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Affiliation(s)
- Alexander E Ivanov
- Department of Biotechnology, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00 Lund, Sweden
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47
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Cannizzo C, Amigoni-Gerbier S, Larpent C. Boronic acid-functionalized nanoparticles: synthesis by microemulsion polymerization and application as a re-usable optical nanosensor for carbohydrates. POLYMER 2005. [DOI: 10.1016/j.polymer.2004.11.052] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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