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Shortall K, Otero F, Bendl S, Soulimane T, Magner E. Enzyme Immobilization on Metal Organic Frameworks: the Effect of Buffer on the Stability of the Support. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13382-13391. [PMID: 36286410 PMCID: PMC9648341 DOI: 10.1021/acs.langmuir.2c01630] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/28/2022] [Indexed: 05/04/2023]
Abstract
Metal organic frameworks (MOFs) have been used to encapsulate an array of enzymes in a rapid and facile manner; however, the stability of MOFs as supports for enzymes has not been examined in detail. This study examines the stability of MOFs with different compositions (Fe-BTC, Co-TMA, Ni-TMA, Cu-TMA, and ZIF-zni) in buffered solutions commonly used in enzyme immobilization and biocatalysis. Stability was assessed via quantification of the release of metals by inductively coupled plasma optical emission spectroscopy. The buffers used had varied effects on different MOF supports, with incubation of all MOFs in buffers resulting in the release of metal ions to varying extents. Fe-BTC was completely dissolved in citrate, a buffer that has a profound destabilizing effect on all MOFs analyzed, precluding its use with MOFs. MOFs were more stable in acetate, potassium phosphate, and Tris HCl buffers. The results obtained provide a guide for the selection of an appropriate buffer with a particular MOF as a support for the immobilization of an enzyme. In addition, these results identify the requirement to develop methods of improving the stability of MOFs in aqueous solutions. The use of polymer coatings was evaluated with polyacrylic acid (PAA) providing an improved level of stability. Lipase was immobilized in Fe-BTC with PAA coating, resulting in a stable biocatalyst with retention of activity in comparison to the free enzyme.
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Affiliation(s)
- Kim Shortall
- Department of Chemical Sciences, Bernal
Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Fernando Otero
- Department of Chemical Sciences, Bernal
Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Simon Bendl
- Department of Chemical Sciences, Bernal
Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Tewfik Soulimane
- Department of Chemical Sciences, Bernal
Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Edmond Magner
- Department of Chemical Sciences, Bernal
Institute, University of Limerick, V94 T9PX Limerick, Ireland
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2
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Iminodiacetic Acid (IDA) Cation-Exchange Nonwoven Membranes for Efficient Capture of Antibodies and Antibody Fragments. MEMBRANES 2021; 11:membranes11070530. [PMID: 34357180 PMCID: PMC8305546 DOI: 10.3390/membranes11070530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/08/2021] [Accepted: 07/11/2021] [Indexed: 11/30/2022]
Abstract
There is strong need to reduce the manufacturing costs and increase the downstream purification efficiency of high-value therapeutic monoclonal antibodies (mAbs). This paper explores the performance of a weak cation-exchange membrane based on the coupling of IDA to poly(butylene terephthalate) (PBT) nonwoven fabrics. Uniform and conformal layers of poly(glycidyl methacrylate) (GMA) were first grafted to the surface of the nonwovens. Then IDA was coupled to the polyGMA layers under optimized conditions, resulting in membranes with very high permeability and binding capacity. This resulted in IgG dynamic binding capacities at very short residence times (0.1–2.0 min) that are much higher than those achieved by the best cation-exchange resins. Similar results were obtained in the purification of a single-chain (scFv) antibody fragment. As is customary with membrane systems, the dynamic binding capacities did not change significantly over a wide range of residence times. Finally, the excellent separation efficiency and potential reusability of the membrane were confirmed by five consecutive cycles of mAb capture from its cell culture harvest. The present work provides significant evidence that this weak cation-exchange nonwoven fabric platform might be a suitable alternative to packed resin chromatography for low-cost, higher productivity manufacturing of therapeutic mAbs and antibody fragments.
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3
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Qi L, Qiao J. Design of Switchable Enzyme Carriers Based on Stimuli-Responsive Porous Polymer Membranes for Bioapplications. ACS APPLIED BIO MATERIALS 2021; 4:4706-4719. [PMID: 35007021 DOI: 10.1021/acsabm.1c00338] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Design of efficient enzyme carriers, where enzymes are conjugated to supports, has become an attractive research avenue. Immobilized enzymes are advantageous for practical applications because of their convenience in handling, ease of separation, and good reusability. However, the main challenge is that these traditional enzyme carriers are unable to regulate the enzymolysis efficiency or to protect the enzymes from proteolytic degradation, which restricts their effectiveness of enzymes in bioapplications. Enlightened by the stimuli-responsive channels in the natural cell membranes, conjugation of the enzymes within flat-sheet stimuli-responsive porous polymer membranes (SR-PPMs) as artificial cell membranes is an efficient strategy for circumventing this challenge. Controlled by the external stimuli, the multifunctional polymer chains, which are incorporated within the membranes and attached to the enzyme, change their structures to defend the enzyme from the external environmental disturbances and degradation by proteinases. Specifically, smart SR-PPM enzyme carriers (SR-PPMECs) not only permit convective substrate transfer through the accessible porous network, dramatically improving enzymolysis efficiency due to the adjustable pore sizes and the confinement effect, but they also act as molecular switches for regulating its permeability and selectivity. In this review, the concept of SR-PPMECs is presented. It covers the latest developments in design strategies of flat-sheet SR-PPFMs, fabrication protocols of SR-PPFMECs, strategies for the regulation of enzymolysis efficiency, and their cutting-edge bioapplications.
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Affiliation(s)
- Li Qi
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Juan Qiao
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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4
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Immobilized metal affinity chromatography optimization for poly-histidine tagged proteins. J Chromatogr A 2020; 1629:461505. [DOI: 10.1016/j.chroma.2020.461505] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 11/18/2022]
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5
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Furtado NJS, Magalhães JL. Cobalt ferrite nanoparticles as a source of intrinsic metals for simultaneous electrosynthesis of Prussian blue and cobalt hexacyanoferrate. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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6
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A novel ion-imprinted membrane induced by amphiphilic block copolymer for selective separation of Pt(IV) from aqueous solutions. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.11.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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7
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Chang M, Qin Q, Wang B, Xia T, Lv W, Sun X, Shi X, Xu G. Carboxymethylated polyethylenimine modified magnetic nanoparticles specifically for purification of His-tagged protein. J Sep Sci 2018; 42:744-753. [PMID: 30488556 DOI: 10.1002/jssc.201800969] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/04/2018] [Accepted: 11/22/2018] [Indexed: 01/23/2023]
Abstract
Employing immobilized metal-ion affinity chromatography and magnetic separation could ideally provide a useful analytical strategy for purifying His-tagged protein. In the current study, a facile route was designed to prepare CMPEI-Ni2+ @SiO2 @Fe3 O4 (CMPEI=carboxymethylated polyethyleneimine) magnetic nanoparticles composed of a strong magnetic core of Fe3 O4 and a Ni2+ -immobilized carboxymethylated polyethyleneimine coated outside shell, which was formed by electrostatic interactions between polyanionic electrolyte of carboxymethylated polyethyleneimine and positively charged surface of 3-(trimethoxysilyl)propylamin modified SiO2 @Fe3 O4 . The resulting CMPEI-Ni2+ @SiO2 @Fe3 O4 composite nanoparticles displayed well-uniform structure and high magnetic responsiveness. Hexa His-tagged peptides and purified His-tagged recombinant retinoid X receptor alpha were chosen as the model samples to evaluate the adsorption, capacity, and reusability of the composite nanoparticles. The results demonstrated the CMPEI-Ni2+ @SiO2 @Fe3 O4 nanoparticles possessed rapid adsorption, large capacity, and good recyclability. The obtained nanoparticles were further used to purify His-tagged protein in practical environment. It was found that the nanoparticles could selectively capture His-tagged recombinant retinoid X receptor protein from complex cell lysate. Owing to its easy synthesis, large binding capacity, and good reusability, the prepared CMPEI-Ni2+ @SiO2 @Fe3 O4 magnetic nanoparticles have great potential for application in biotechnological fields.
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Affiliation(s)
- Mengmeng Chang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Qian Qin
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Bohong Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Tian Xia
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
| | - Wangjie Lv
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xiaoshan Sun
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xianzhe Shi
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
| | - Guowang Xu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
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8
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Lin Z, Goddard JM. Photocurable coatings prepared by emulsion polymerization present chelating properties. Colloids Surf B Biointerfaces 2018; 172:143-151. [PMID: 30145460 DOI: 10.1016/j.colsurfb.2018.08.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/10/2018] [Accepted: 08/13/2018] [Indexed: 10/28/2022]
Abstract
Herein, we present a method to synthesize a photocurable metal chelating copolymer coating via emulsion polymerization to enable a facile coat/cure preparation of metal chelating materials. The copolymer coating was a poly(n-butyl acrylate) based polymer (79 mol %) synthesized by emulsion polymerization, with iminodiacetic acid (2 mol %) and benzophenone moieties (19 mol %) to impart metal chelating and photocrosslinking properties, respectively. The copolymer was applied onto polypropylene films and was photocured (365 nm, 225 mW/cm2, 180 s) to produce metal chelating film. The resulting metal chelating film had activity towards Fe3+ by chelating 10.9 ± 1.9 nmol/cm2, 47.9 ± 5.3 nmol/cm2, and 156.0 ± 13.8 nmol/cm2 of Fe3+ at pH 3.0, pH 4.0, and pH 5.0, respectively. The metal chelating film controlled transition metal induced ascorbic acid degradation by extending half-life of ascorbic acid degradation from 6 days to 20 days at pH 3.0, and from 3 days to 6 days at pH 5.0, demonstrating its potential as an antioxidant active packaging material. Despite the introduction of polar iminodiacetic acid chelating moieties, the poly(n-butyl acrylate) based coatings retained low surface energies (24.0 mN/m) necessary to mitigate fouling and enable product release in packaging applications. This work overcomes a major knowledge gap in the area of functional coatings, by demonstrating a method by which critical properties such as control of surface energy, retention of mechanical properties, and scalability are integrated into the structure of a functional coating. The photocurable polymer coatings as reported here enable scalable production of active materials with metal chelating functionality, with applications in water treatment, trace metal detection, protein purification, and active packaging.
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Affiliation(s)
- Zhuangsheng Lin
- Department of Food Science, Cornell University, Ithaca, NY, 14853, USA
| | - Julie M Goddard
- Department of Food Science, Cornell University, Ithaca, NY, 14853, USA.
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9
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Lin Z, Zhang Y, Ober CK, Goddard JM. Facile Preparation of Epoxide-Functionalized Surfaces via Photocurable Copolymer Coatings and Subsequent Immobilization of Iminodiacetic Acids. ACS APPLIED MATERIALS & INTERFACES 2018; 10:40871-40879. [PMID: 30398853 DOI: 10.1021/acsami.8b15716] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Herein, we report a simple coat/cure preparation of epoxide-functionalized surfaces using a photocurable copolymer technology. The photocurable copolymer, poly(glycidyl methacrylate- co-butyl acrylate- co-4-benzoylphenyl methacrylate) (GBB), was synthesized by single electron transfer-living radical polymerization (SET-LRP). The epoxide content in the copolymer was tuned by controlling the content of glycidyl methacrylate. Three copolymers, GBB(1), GBB(2), and GBB(3), with epoxide contents of 22, 63, and 91 mol %, respectively, were cast onto polypropylene films and photocured by UV-light exposure. Subsequently, iminodiacetic acids (IDA) were immobilized onto the GBB-coated materials via a ring-opening reaction. The IDA-functionalized coatings GBB(1)-IDA, GBB(2)-IDA, and GBB(3)-IDA presented IDA contents of 1.47 ± 0.08, 18.67 ± 1.46, and 49.05 ± 2.88 nmol/cm2, respectively, which increased as the epoxide content increased. The IDA-functionalized GBB coatings exhibited metal chelating capability toward transition metal ions (e.g., iron and copper). The reported photocurable copolymer technology offers a facile and tunable preparation of epoxide-functionalized surfaces, with potential extended applications in biopatterning, active packaging, and nanotechnology.
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10
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Liu W, Bennett AL, Ning W, Tan HY, Berwanger JD, Zeng X, Bruening ML. Monoclonal Antibody Capture and Analysis Using Porous Membranes Containing Immobilized Peptide Mimotopes. Anal Chem 2018; 90:12161-12167. [DOI: 10.1021/acs.analchem.8b03183] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
| | - Austin L. Bennett
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Wenjing Ning
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | | | | | - Xiangqun Zeng
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, United States
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11
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Núñez C, Chantada-Vázquez MDP, Bravo SB, Vázquez-Estévez S. Novel functionalized nanomaterials for the effective enrichment of proteins and peptides with post-translational modifications. J Proteomics 2018; 181:170-189. [DOI: 10.1016/j.jprot.2018.04.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 04/02/2018] [Accepted: 04/09/2018] [Indexed: 02/07/2023]
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12
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Li Z, Zhao J, Wang Z, Dai Z. Nickel-mediated allosteric manipulation of G-quadruplex DNAzyme for highly selective detection of histidine. Anal Chim Acta 2018; 1008:90-95. [DOI: 10.1016/j.aca.2017.12.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/30/2017] [Accepted: 12/11/2017] [Indexed: 11/29/2022]
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13
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Synthesis and characterization of Ag+-decorated poly(glycidyl methacrylate) microparticle design for the adsorption of nucleic acids. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1081-1082:1-7. [DOI: 10.1016/j.jchromb.2018.02.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 02/05/2018] [Accepted: 02/15/2018] [Indexed: 11/18/2022]
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14
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Liu W, Wijeratne S, Yang L, Bruening M. Porous star-star polyelectrolyte multilayers for protein binding. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.01.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Khan MK, Luo J, Wang Z, Khan R, Chen X, Wan Y. Alginate dialdehyde meets nylon membrane: a versatile platform for facile and green fabrication of membrane adsorbers. J Mater Chem B 2018; 6:1640-1649. [DOI: 10.1039/c7tb02966g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Alginate dialdehyde, a biocompatible polymer, is used as an intermediate layer on a nylon membrane to readily fabricate different membrane adsorbers.
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Affiliation(s)
- M. Kamran Khan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
- Beijing 100049
| | - Jianquan Luo
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
- Beijing 100049
| | - Zhaoshuai Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
- Beijing 100049
| | - Rashid Khan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
- Beijing 100049
| | - Xiangrong Chen
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Yinhua Wan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences
- Beijing 100190
- P. R. China
- University of Chinese Academy of Sciences
- Beijing 100049
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16
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Fan J, Luo J, Song W, Wan Y. One-step purification of α1-antitrypsin by regulating polyelectrolyte ligands on mussel-inspired membrane adsorber. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.01.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Zhao Y, Tang K, Liu H, Van der Bruggen B, Sotto Díaz A, Shen J, Gao C. An anion exchange membrane modified by alternate electro-deposition layers with enhanced monovalent selectivity. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.07.026] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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18
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Lin Z, Roman MJ, Decker EA, Goddard JM. Synthesis of Iminodiacetate Functionalized Polypropylene Films and Their Efficacy as Antioxidant Active-Packaging Materials. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:4606-4617. [PMID: 27243793 DOI: 10.1021/acs.jafc.6b01128] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The introduction of metal-chelating ligands to the food-contact surface of packaging materials may enable the removal of synthetic chelators (e.g., ethylenediamine tetra-acetic acid (EDTA)) from food products. In this study, the metal-chelating ligand iminodiacetate (IDA) was covalently grafted onto polypropylene surfaces to produce metal-chelating active-packaging films. The resulting films were able to chelate 138.1 ± 26 and 210.0 ± 28 nmol/cm(2) Fe(3+) and Cu(2+) ions, respectively, under acidic conditions (pH 3.0). The films demonstrated potent antioxidant efficacy in two model food systems. In an emulsified-oil system, the chelating materials extended the lag phase of both lipid hydroperoxide and hexanal formation from 5 to 25 days and were as effective as EDTA. The degradation half-life of ascorbic acid in an aqueous solution was extended from 5 to 14 days. This work demonstrates the potential application of surface-grafted chelating IDA ligands as effective antioxidant active food-packaging materials.
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Affiliation(s)
- Zhuangsheng Lin
- Department of Food Science, University of Massachusetts, Chenoweth Lab , 102 Holdsworth Way, Amherst, Massachusetts 01003, United States
| | - Maxine J Roman
- Department of Food Science, University of Massachusetts, Chenoweth Lab , 102 Holdsworth Way, Amherst, Massachusetts 01003, United States
| | - Eric A Decker
- Department of Food Science, University of Massachusetts, Chenoweth Lab , 102 Holdsworth Way, Amherst, Massachusetts 01003, United States
- Bioactive Natural Products Research Group, Department of Biochemistry, Faculty of Science, King Abdulaziz University , P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Julie M Goddard
- Department of Food Science, University of Massachusetts, Chenoweth Lab , 102 Holdsworth Way, Amherst, Massachusetts 01003, United States
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Wijeratne S, Liu W, Dong J, Ning W, Ratnayake ND, Walker KD, Bruening ML. Layer-by-Layer Deposition with Polymers Containing Nitrilotriacetate, A Convenient Route to Fabricate Metal- and Protein-Binding Films. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10164-10173. [PMID: 27042860 DOI: 10.1021/acsami.6b00896] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This paper describes a convenient synthesis of nitrilotriacetate (NTA)-containing polymers and subsequent layer-by-layer adsorption of these polymers on flat surfaces and in membrane pores. The resulting films form NTA-metal-ion complexes and capture 2-3 mmol of metal ions per mL of film. Moreover, these coatings bind multilayers of polyhistidine-tagged proteins through association with NTA-metal-ion complexes. Inclusion of acrylic acid repeat units in NTA-containing copolymers promotes swelling to increase protein binding in films on Au-coated wafers. Adsorption of NTA-containing films in porous nylon membranes gives materials that capture ∼46 mg of His-tagged ubiquitin per mL. However, the binding capacity decreases with the protein molecular weight. Due to the high affinity of NTA for metal ions, the modified membranes show modest leaching of Ni(2+) in binding and rinsing buffers. Adsorption of NTA-containing polymers is a simple method to create metal- and protein-binding films and may, with future enhancement of stability, facilitate development of disposable membranes that rapidly purify tagged proteins.
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Affiliation(s)
- Salinda Wijeratne
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Weijing Liu
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Jinlan Dong
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Wenjing Ning
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | | | - Kevin D Walker
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Merlin L Bruening
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
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20
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Cazelles R, Lalaoui N, Hartmann T, Leimkühler S, Wollenberger U, Antonietti M, Cosnier S. Ready to use bioinformatics analysis as a tool to predict immobilisation strategies for protein direct electron transfer (DET). Biosens Bioelectron 2016; 85:90-95. [PMID: 27156017 DOI: 10.1016/j.bios.2016.04.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 04/20/2016] [Accepted: 04/22/2016] [Indexed: 12/19/2022]
Abstract
Direct electron transfer (DET) to proteins is of considerable interest for the development of biosensors and bioelectrocatalysts. While protein structure is mainly used as a method of attaching the protein to the electrode surface, we employed bioinformatics analysis to predict the suitable orientation of the enzymes to promote DET. Structure similarity and secondary structure prediction were combined underlying localized amino-acids able to direct one of the enzyme's electron relays toward the electrode surface by creating a suitable bioelectrocatalytic nanostructure. The electro-polymerization of pyrene pyrrole onto a fluorine-doped tin oxide (FTO) electrode allowed the targeted orientation of the formate dehydrogenase enzyme from Rhodobacter capsulatus (RcFDH) by means of hydrophobic interactions. Its electron relays were directed to the FTO surface, thus promoting DET. The reduction of nicotinamide adenine dinucleotide (NAD(+)) generating a maximum current density of 1μAcm(-2) with 10mM NAD(+) leads to a turnover number of 0.09electron/s/molRcFDH. This work represents a practical approach to evaluate electrode surface modification strategies in order to create valuable bioelectrocatalysts.
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Affiliation(s)
- R Cazelles
- Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Golm), Germany.
| | - N Lalaoui
- Univ. Grenoble Alpes, CNRS, DCM UMR 5250, F-38000 Grenoble, France
| | - T Hartmann
- Department of Molecular Enzymology, Institute for Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam (Golm), Germany
| | - S Leimkühler
- Department of Molecular Enzymology, Institute for Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam (Golm), Germany
| | - U Wollenberger
- Department of Molecular Enzymology, Institute for Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam (Golm), Germany
| | - M Antonietti
- Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Golm), Germany
| | - S Cosnier
- Univ. Grenoble Alpes, CNRS, DCM UMR 5250, F-38000 Grenoble, France
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21
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Ning W, Bruening ML. Rapid Protein Digestion and Purification with Membranes Attached to Pipet Tips. Anal Chem 2015; 87:11984-9. [DOI: 10.1021/acs.analchem.5b03679] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Wenjing Ning
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Merlin L. Bruening
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
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Dong J, Bruening ML. Functionalizing Microporous Membranes for Protein Purification and Protein Digestion. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2015; 8:81-100. [PMID: 26001953 DOI: 10.1146/annurev-anchem-071114-040255] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This review examines advances in the functionalization of microporous membranes for protein purification and the development of protease-containing membranes for controlled protein digestion prior to mass spectrometry analysis. Recent studies confirm that membranes are superior to bead-based columns for rapid protein capture, presumably because convective mass transport in membrane pores rapidly brings proteins to binding sites. Modification of porous membranes with functional polymeric films or TiO₂ nanoparticles yields materials that selectively capture species ranging from phosphopeptides to His-tagged proteins, and protein-binding capacities often exceed those of commercial beads. Thin membranes also provide a convenient framework for creating enzyme-containing reactors that afford control over residence times. With millisecond residence times, reactors with immobilized proteases limit protein digestion to increase sequence coverage in mass spectrometry analysis and facilitate elucidation of protein structures. This review emphasizes the advantages of membrane-based techniques and concludes with some challenges for their practical application.
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Affiliation(s)
- Jinlan Dong
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824;
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