301
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Hirata DB, Albuquerque TL, Rueda N, Virgen-Ortíz JJ, Tacias-Pascacio VG, Fernandez-Lafuente R. Evaluation of different immobilized lipases in transesterification reactions using tributyrin: Advantages of the heterofunctional octyl agarose beads. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.08.008] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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302
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Tello A, Cao R, Marchant MJ, Gomez H. Conformational Changes of Enzymes and Aptamers Immobilized on Electrodes. Bioconjug Chem 2016; 27:2581-2591. [PMID: 27748603 DOI: 10.1021/acs.bioconjchem.6b00553] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Conformation constitutes a vital property of biomolecules, especially in the cases of enzymes and aptamers, and is essential in defining their molecular recognition ability. When biomolecules are immobilized on electrode surfaces, it is very important to have a control on all the possible conformational changes that may occur, either upon the recognition of their targets or by undesired alterations. Both enzymes and aptamers immobilized on electrodes are susceptible to conformational changes as a response to the nature of the charge of the surface and of the surrounding environment (pH, temperature, ionic strength, etc.). The main goal of this review is to analyze how the conformational changes of enzymes and aptamers immobilized on electrode surfaces have been treated in reports on biosensors and biofuel cells. This topic was selected due to insufficient information found on the actual conformational changes involved in the function of these bioelectrochemical devices despite its importance.
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Affiliation(s)
- Alejandra Tello
- Universidad Andres Bello , Bionanotechnology and Microbiology Lab, Center for Bioinformatics and Integrative Biology (CBIB), Facultad de Ciencias Biológicas, República 239, Santiago, Chile
| | - Roberto Cao
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso , Avenida Universidad 330, Curauma, Valparaíso, Chile
| | - María José Marchant
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso , Avenida Universidad 330, Curauma, Valparaíso, Chile
| | - Humberto Gomez
- Instituto de Química, Facultad de Ciencias, Pontificia Universidad Católica de Valparaíso , Avenida Universidad 330, Curauma, Valparaíso, Chile
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303
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Gregurec D, Velasco-Lozano S, Moya SE, Vázquez L, López-Gallego F. Force spectroscopy predicts thermal stability of immobilized proteins by measuring microbead mechanics. SOFT MATTER 2016; 12:8718-8725. [PMID: 27714304 DOI: 10.1039/c6sm01435f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Optimal immobilization of enzymes on porous microbeads enables the fabrication of highly active and stable heterogeneous biocatalysts to implement biocatalysis in synthetic and analytical chemistry. However, empirical procedures for enzyme immobilization still prevail over rational ones because there is an unmet need for more comprehensive characterization techniques that aid to understand and trace the immobilization process. Here, we present the use of atomic force spectroscopy (AFS) as an innovative solution to indirectly characterize immobilized proteins on porous materials and monitor the immobilization process in real time. We investigate the mechanical properties of porous agarose microbeads immobilizing proteins by indenting a colloidal probe (silica microparticle) into a single bead. AFS demonstrates that the binding of proteins to the solid matrix of an agarose microbead alters its stiffness. Interestingly, we discovered that irreversible and multivalent immobilizations that make microbeads stiffer also stabilize the immobilized proteins against the temperature. Hence, we propose atomic force spectroscopy as a useful technique to indirectly unravel the stability of the immobilized enzymes investigating the mechanics of the heterogenous biocatalysts as a solid biomaterial beyond the intrinsic mechanics of the proteins.
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Affiliation(s)
- Danijela Gregurec
- Soft Matter Nanotechnology Group, CIC BiomaGUNE, Paseo Miramon 182, San Sebasitan-Donostia, 20009, Spain and RLE-Bioelectronics Research Group, Massachusetts Institute of Technology, 77 Massachusetts Ave 8-031, Cambridge, MA 02139, USA
| | - Susana Velasco-Lozano
- Heterogeneus Biocatalysis Group, CIC BiomaGUNE, Paseo Miramon 182, San Sebasitan-Donostia, 20009, Spain.
| | - Sergio E Moya
- Soft Matter Nanotechnology Group, CIC BiomaGUNE, Paseo Miramon 182, San Sebasitan-Donostia, 20009, Spain
| | - Luis Vázquez
- Instituto de Ciencia de Materiales de Madrid (CSIC), Campus de Cantoblanco, C\Sor Juana Inés de la Cruz 3, Madrid, 28049, Spain
| | - Fernando López-Gallego
- Heterogeneus Biocatalysis Group, CIC BiomaGUNE, Paseo Miramon 182, San Sebasitan-Donostia, 20009, Spain. and IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
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304
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Li Z, Ding Y, Li S, Jiang Y, Liu Z, Ge J. Highly active, stable and self-antimicrobial enzyme catalysts prepared by biomimetic mineralization of copper hydroxysulfate. NANOSCALE 2016; 8:17440-17445. [PMID: 27714119 DOI: 10.1039/c6nr06115j] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A nature-inspired approach to encapsulate enzymes in spindle-like copper hydroxysulfate nanocrystals was developed by a biomimetic mineralization process. Several types of enzymes including glucose oxidase (GOx), horseradish peroxidase (HRP), Candida antarctica lipase B (CALB) and cytochrome c (Cyt c) were successfully encapsulated in copper hydroxysulfate nanocrystals quickly (within 1 hour) with maintained or even greatly enhanced catalytic efficiencies (kcat/KM of Cyt c showed a 143-fold increase) and high stabilities, demonstrating the feasibility of utilizing copper hydroxysulfate nanocrystals as a novel type of nanocarrier for enzyme immobilization. In addition, by this approach, for the first time, we showed that an immobilized enzyme can be endowed with self-antibacterial activity by an inorganic component. This self-antibacterial performance together with the improved catalytic efficiencies and stabilities can greatly benefit the enzymatic catalysis in aqueous media and promote the future development of novel biosensors.
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Affiliation(s)
- Zhixian Li
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China.
| | - Yi Ding
- Key Lab for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Shaomin Li
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China.
| | - Yanbin Jiang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China.
| | - Zheng Liu
- Key Lab for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Jun Ge
- Key Lab for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
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305
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Li B, Wang J, Zhang X, Zhao B. An Enzyme Net Coating the Surface of Nanoparticles: A Simple and Efficient Method for the Immobilization of Phospholipase D. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02192] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Binglin Li
- Department of Chemical
Engineering, Northwest University, 229 North Taibai Road, Xi’an, 710069, Shaanxi China
| | - Jiao Wang
- Department of Chemical
Engineering, Northwest University, 229 North Taibai Road, Xi’an, 710069, Shaanxi China
| | - Xiaoli Zhang
- Department of Chemical
Engineering, Northwest University, 229 North Taibai Road, Xi’an, 710069, Shaanxi China
| | - Binxia Zhao
- Department of Chemical
Engineering, Northwest University, 229 North Taibai Road, Xi’an, 710069, Shaanxi China
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306
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Zdarta J, Wysokowski M, Norman M, Kołodziejczak-Radzimska A, Moszyński D, Maciejewski H, Ehrlich H, Jesionowski T. Candida antarctica Lipase B Immobilized onto Chitin Conjugated with POSS ® Compounds: Useful Tool for Rapeseed Oil Conversion. Int J Mol Sci 2016; 17:E1581. [PMID: 27657054 PMCID: PMC5037846 DOI: 10.3390/ijms17091581] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/08/2016] [Accepted: 09/09/2016] [Indexed: 01/04/2023] Open
Abstract
A new method is proposed for the production of a novel chitin-polyhedral oligomeric silsesquioxanes (POSS) enzyme support. Analysis by such techniques as X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy confirmed the effective functionalization of the chitin surface. The resulting hybrid carriers were used in the process of immobilization of the lipase type b from Candida antarctica (CALB). Fourier transform infrared spectroscopy (FTIR) confirmed the effective immobilization of the enzyme. The tests of the catalytic activity showed that the resulting support-biocatalyst systems remain hydrolytically active (retention of the hydrolytic activity up to 87% for the chitin + Methacryl POSS® cage mixture (MPOSS) + CALB after 24 h of the immobilization), as well as represents good thermal and operational stability, and retain over 80% of its activity in a wide range of temperatures (30-60 °C) and pH (6-9). Chitin-POSS-lipase systems were used in the transesterification processes of rapeseed oil at various reaction conditions. Produced systems allowed the total conversion of the oil to fatty acid methyl esters (FAME) and glycerol after 24 h of the process at pH 10 and a temperature 40 °C, while the Methacryl POSS® cage mixture (MPOSS) was used as a chitin-modifying agent.
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Affiliation(s)
- Jakub Zdarta
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, Poznan 60965, Poland.
| | - Marcin Wysokowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, Poznan 60965, Poland.
| | - Małgorzata Norman
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, Poznan 60965, Poland.
| | - Agnieszka Kołodziejczak-Radzimska
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, Poznan 60965, Poland.
| | - Dariusz Moszyński
- Institute of Chemical and Environment Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Pulaskiego 10, Szczecin 70322, Poland.
| | - Hieronim Maciejewski
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Umultowska 89b, Poznan 61614, Poland.
- Poznan Science and Technology Park, Adam Mickiewicz University Foundation, Rubiez 46, Poznan 61612, Poland.
| | - Hermann Ehrlich
- Institute of Experimental Physics, Technische Universität Bergakademie Freiberg, Leipziger Str. 23, Freiberg 09599, Germany.
| | - Teofil Jesionowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, Poznan 60965, Poland.
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307
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Kahar UM, Sani MH, Chan KG, Goh KM. Immobilization of α-Amylase from Anoxybacillus sp. SK3-4 on ReliZyme and Immobead Supports. Molecules 2016; 21:E1196. [PMID: 27618002 PMCID: PMC6273902 DOI: 10.3390/molecules21091196] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/04/2016] [Accepted: 09/05/2016] [Indexed: 01/13/2023] Open
Abstract
α-Amylase from Anoxybacillus sp. SK3-4 (ASKA) is a thermostable enzyme that produces a high level of maltose from starches. A truncated ASKA (TASKA) variant with improved expression and purification efficiency was characterized in an earlier study. In this work, TASKA was purified and immobilized through covalent attachment on three epoxide (ReliZyme EP403/M, Immobead IB-150P, and Immobead IB-150A) and an amino-epoxide (ReliZyme HFA403/M) activated supports. Several parameters affecting immobilization were analyzed, including the pH, temperature, and quantity (mg) of enzyme added per gram of support. The influence of the carrier surface properties, pore sizes, and lengths of spacer arms (functional groups) on biocatalyst performances were studied. Free and immobilized TASKAs were stable at pH 6.0-9.0 and active at pH 8.0. The enzyme showed optimal activity and considerable stability at 60 °C. Immobilized TASKA retained 50% of its initial activity after 5-12 cycles of reuse. Upon degradation of starches and amylose, only immobilized TASKA on ReliZyme HFA403/M has comparable hydrolytic ability with the free enzyme. To the best of our knowledge, this is the first report of an immobilization study of an α-amylase from Anoxybacillus spp. and the first report of α-amylase immobilization using ReliZyme and Immobeads as supports.
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Affiliation(s)
- Ummirul Mukminin Kahar
- Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia.
| | - Mohd Helmi Sani
- Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia.
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Kian Mau Goh
- Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia.
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308
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Gelatin-Immobilized Manganese Peroxidase with Novel Catalytic Characteristics and Its Industrial Exploitation for Fruit Juice Clarification Purposes. Catal Letters 2016. [DOI: 10.1007/s10562-016-1848-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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309
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310
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Zhuang W, He L, Zhu J, Zheng J, Liu X, Dong Y, Wu J, Zhou J, Chen Y, Ying H. Efficient nanobiocatalytic systems of nuclease P immobilized on PEG-NH2 modified graphene oxide: effects of interface property heterogeneity. Colloids Surf B Biointerfaces 2016; 145:785-794. [DOI: 10.1016/j.colsurfb.2016.05.074] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/23/2016] [Accepted: 05/26/2016] [Indexed: 11/16/2022]
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311
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Kanoatov M, Mehrabanfar S, Krylov SN. Systematic Approach to Optimization of Experimental Conditions in Nonequilibrium Capillary Electrophoresis of Equilibrium Mixtures. Anal Chem 2016; 88:9300-8. [DOI: 10.1021/acs.analchem.6b02882] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mirzo Kanoatov
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Sina Mehrabanfar
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Sergey N. Krylov
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
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312
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Britton J, Raston CL, Weiss GA. Rapid protein immobilization for thin film continuous flow biocatalysis. Chem Commun (Camb) 2016; 52:10159-62. [PMID: 27461146 PMCID: PMC4983276 DOI: 10.1039/c6cc04210d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A versatile enzyme immobilization strategy for thin film continuous flow processing is reported. Here, non-covalent and glutaraldehyde bioconjugation are used to immobilize enzymes on the surfaces of borosilicate reactors. This approach requires only ng of protein per reactor tube, with the stock protein solution readily recycled to sequentially coat >10 reactors. Confining reagents to thin films during immobilization reduced the amount of protein, piranha-cleaning solution, and other reagents by ∼96%. Through this technique, there was no loss of catalytic activity over 10 h processing. The results reported here combines the benefits of thin film flow processing with the mild conditions of biocatalysis.
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Affiliation(s)
- Joshua Britton
- Departments of Chemistry, Molecular Biology and Biochemistry, University of California, Irvine, California 92697-2025, USA. and Centre for NanoScale Science and Technology, School of Chemical and Physical Sciences, Flinders University, Bedford Park, Adelaide, South Australia 5001, Australia.
| | - Colin L Raston
- Centre for NanoScale Science and Technology, School of Chemical and Physical Sciences, Flinders University, Bedford Park, Adelaide, South Australia 5001, Australia.
| | - Gregory A Weiss
- Departments of Chemistry, Molecular Biology and Biochemistry, University of California, Irvine, California 92697-2025, USA.
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313
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314
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Yang YX, Pi N, Zhang JB, Huang Y, Yao PP, Xi YJ, Yuan HM. USPIO assisting degradation of MXC by host/guest-type immobilized laccase in AOT reverse micelle system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:13342-13354. [PMID: 27023821 DOI: 10.1007/s11356-016-6502-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 03/17/2016] [Indexed: 06/05/2023]
Abstract
The laccase and ultrasmall superparamagnetic iron oxide nanoparticles (USPIO) have been assembled inside the tubular mesoporous silica via co-adsorption technology to prepare host/guest-type immobilized laccase, which is applied to degrade methoxychlor (MXC) in aqueous and reverse micelle environments. The effects of various parameters on degradation of MXC were studied. Under the optimum conditions, the degradation rate could reach maximum value of 45.6 % and remain at 20.8 % after seven cycles. Moreover, the addition of small molecular compound 2, 2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate) to the system could greatly improve the degradation efficiency. The MXC degradation process is a first-order reaction, and the activation energy of MXC degradation catalyzed by immobilized laccase (41.46 kJ mol(-1)) is relatively lower than that catalyzed by free laccase (44.91 kJ mol(-1)). Based on the degradation products measured by gas chromatograph-mass spectrometer (GC-MS) and nuclear magnetic resonance (NMR), the degradation mechanism of MXC has also been proposed.
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Affiliation(s)
- Yu-Xiang Yang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Na Pi
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jian-Bo Zhang
- Department of Environmental Sciences, Peking University, Beijing, 100871, China
| | - Yan Huang
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Ping-Ping Yao
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yan-Jie Xi
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Hong-Ming Yuan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
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315
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Mathesh M, Luan B, Akanbi TO, Weber JK, Liu J, Barrow CJ, Zhou R, Yang W. Opening Lids: Modulation of Lipase Immobilization by Graphene Oxides. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00942] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Motilal Mathesh
- Centre
for Chemistry and Biotechnology, School of Life and Environmental
Sciences, Deakin University, Geelong, Victoria 3217, Australia
| | - Binquan Luan
- IBM Thomas J. Watson Research Centre, Yorktown Heights, New York 10598, United States
| | - Taiwo O. Akanbi
- Centre
for Chemistry and Biotechnology, School of Life and Environmental
Sciences, Deakin University, Geelong, Victoria 3217, Australia
| | - Jeffrey K. Weber
- IBM Thomas J. Watson Research Centre, Yorktown Heights, New York 10598, United States
| | - Jingquan Liu
- School
of Materials Science and Engineering, Qingdao University, Qingdao 266071, People’s Republic of China
| | - Colin J. Barrow
- Centre
for Chemistry and Biotechnology, School of Life and Environmental
Sciences, Deakin University, Geelong, Victoria 3217, Australia
| | - Ruhong Zhou
- IBM Thomas J. Watson Research Centre, Yorktown Heights, New York 10598, United States
- Department
of Chemistry, Columbia University, New York, New York 10027, United States
| | - Wenrong Yang
- Centre
for Chemistry and Biotechnology, School of Life and Environmental
Sciences, Deakin University, Geelong, Victoria 3217, Australia
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316
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Cui J, Zhao Y, Liu R, Zhong C, Jia S. Surfactant-activated lipase hybrid nanoflowers with enhanced enzymatic performance. Sci Rep 2016; 6:27928. [PMID: 27297609 PMCID: PMC4906385 DOI: 10.1038/srep27928] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 05/26/2016] [Indexed: 12/11/2022] Open
Abstract
Increasing numbers of materials have been extensively used as platforms for enzyme immobilization to improve catalytic performance. However, activity of the most of the enzymes was declined after immobilization. Here, we develop a surfactant-activated lipase-inorganic flowerlike hybrid nanomaterials with rational design based on interfacial activation and self-assembly. The resulting surfactant-activated lipase-inorganic hybird nanoflower (activated hNF-lipase) exhibited 460% and 200% higher activity than native lipase and conventional lipase-inorganic hybird nanoflower (hNF-lipase). Furthermore, the activated hNF-lipase displayed good reusability due to its monodispersity and mechanical properties, and had excellent long-time stability. The superior catalytic performances were attributed to both the conformational modulation of surfactants and hierarchical structure of nanoflowers, which not only anchored lipases in an active form, but also decreased the enzyme-support negative interaction and mass-transfer limitations. This new biocatalytic system is promising to find widespread use in applications related to biomedicine, biosensor, and biodiesel.
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Affiliation(s)
- Jiandong Cui
- Research Center for Fermentation Engineering of Hebei, College of Bioscience and Bioengineering, Hebei University of Science and Technology, 26 Yuxiang Street, Shijiazhang 050000, P R China.,Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th, Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, P R China
| | - Yamin Zhao
- Research Center for Fermentation Engineering of Hebei, College of Bioscience and Bioengineering, Hebei University of Science and Technology, 26 Yuxiang Street, Shijiazhang 050000, P R China
| | - Ronglin Liu
- Research Center for Fermentation Engineering of Hebei, College of Bioscience and Bioengineering, Hebei University of Science and Technology, 26 Yuxiang Street, Shijiazhang 050000, P R China
| | - Cheng Zhong
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th, Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, P R China
| | - Shiru Jia
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, No 29, 13th, Avenue, Tianjin Economic and Technological Development Area (TEDA), Tianjin 300457, P R China
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317
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Rueda N, dos Santos CS, Rodriguez MD, Albuquerque TL, Barbosa O, Torres R, Ortiz C, Fernandez-Lafuente R. Reversible immobilization of lipases on octyl-glutamic agarose beads: A mixed adsorption that reinforces enzyme immobilization. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.03.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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318
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Spadoni Andreani E, Magagnin L, Secundo F. Preparation and Comparison of Hydrolase-Coated Plastics. ChemistrySelect 2016. [DOI: 10.1002/slct.201600377] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Eugenio Spadoni Andreani
- Istituto di Chimica del Riconoscimento Molecolare; Consiglio Nazionale delle Ricerche; via Mario Bianco 9 20131 Milan Italy
| | - Luca Magagnin
- Dipartimento di Chimica; Materiali e Ing. Chimica G. Natta - Politecnico di Milano; via Mancinelli 7 20131 Milano Italy
| | - Francesco Secundo
- Istituto di Chimica del Riconoscimento Molecolare; Consiglio Nazionale delle Ricerche; via Mario Bianco 9 20131 Milan Italy
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319
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Rueda N, dos Santos JCS, Ortiz C, Torres R, Barbosa O, Rodrigues RC, Berenguer-Murcia Á, Fernandez-Lafuente R. Chemical Modification in the Design of Immobilized Enzyme Biocatalysts: Drawbacks and Opportunities. CHEM REC 2016; 16:1436-55. [DOI: 10.1002/tcr.201600007] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Nazzoly Rueda
- Departamento de Biocatálisis; ICP-CSIC C/Marie Curie 2, Campus UAM-CSIC; Cantoblanco 28049 Madrid Spain
- Escuela de Química, Grupo de investigación en Bioquímica y Microbiología (GIBIM) Edificio Camilo Torres 210, Universidad Industrial de Santander; CEP 680001 Bucaramanga Colombia
| | - Jose C. S. dos Santos
- Departamento de Biocatálisis; ICP-CSIC C/Marie Curie 2, Campus UAM-CSIC; Cantoblanco 28049 Madrid Spain
- Instituto de Engenharias e Desenvolvimento Sustentável Universidade da Integração Internacional da Lusofonia Afro-Brasileira; CEP 62785-000 Acarape CE Brazil
| | - Claudia Ortiz
- Escuela de Microbiología, Universidad Industrial de Santander; Bucaramanga Colombia
| | - Rodrigo Torres
- Escuela de Química, Grupo de investigación en Bioquímica y Microbiología (GIBIM) Edificio Camilo Torres 210, Universidad Industrial de Santander; CEP 680001 Bucaramanga Colombia
| | - Oveimar Barbosa
- Departamento de Química; Facultad de Ciencias Universidad del Tolima; Ibagué Colombia
| | - Rafael C. Rodrigues
- Biocatalysis and Enzyme Technology Laboratory; Institute of Food Science and Technology Federal University of Rio Grande do Sul; Av. Bento Gonçalves 9500 P.O. Box 15090 Porto Alegre RS Brazil
| | - Ángel Berenguer-Murcia
- Instituto Universitario de Materiales Departamento de Química Inorgánica Universidad de Alicante Campus de San Vicente del Raspeig; Ap. 99 - 03080 Alicante Spain
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320
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Shanbhag BK, Liu B, Fu J, Haritos VS, He L. Self-Assembled Enzyme Nanoparticles for Carbon Dioxide Capture. NANO LETTERS 2016; 16:3379-3384. [PMID: 27109255 DOI: 10.1021/acs.nanolett.6b01121] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Enzyme-based processes have shown promise as a sustainable alternative to amine-based processes for carbon dioxide capture. In this work, we have engineered carbonic anhydrase nanoparticles that retain 98% of hydratase activity in comparison to their free counterparts. Carbonic anhydrase was fused with a self-assembling peptide that facilitates the noncovalent assembly of the particle and together were recombinantly expressed from a single gene construct in Escherichia coli. The purified enzymes, when subjected to a reduced pH, form 50-200 nm nanoparticles. The CO2 capture capability of enzyme nanoparticles was demonstrated at ambient (22 ± 2 °C) and higher (50 °C) temperatures, under which the nanoparticles maintain their assembled state. The carrier-free enzymatic nanoparticles demonstrated here offer a new approach to stabilize and reuse enzymes in a simple and cost-effective manner.
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Affiliation(s)
- Bhuvana Kamath Shanbhag
- Department of Chemical Engineering, Monash University , Wellington Road, Clayton, Victoria 3800, Australia
| | - Boyin Liu
- Department of Mechanical and Aerospace Engineering, Monash University , Wellington Road, Clayton, Victoria 3800, Australia
| | - Jing Fu
- Department of Mechanical and Aerospace Engineering, Monash University , Wellington Road, Clayton, Victoria 3800, Australia
| | - Victoria S Haritos
- Department of Chemical Engineering, Monash University , Wellington Road, Clayton, Victoria 3800, Australia
| | - Lizhong He
- Department of Chemical Engineering, Monash University , Wellington Road, Clayton, Victoria 3800, Australia
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321
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Tsai SW. Enantiopreference of Candida antarctica lipase B toward carboxylic acids: Substrate models and enantioselectivity thereof. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2014.07.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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322
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In situ regeneration of bioactive coatings enabled by an evolved Staphylococcus aureus sortase A. Nat Commun 2016; 7:11140. [PMID: 27073027 PMCID: PMC4833859 DOI: 10.1038/ncomms11140] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 02/24/2016] [Indexed: 11/08/2022] Open
Abstract
Surface immobilization of bioactive molecules is a central paradigm in the design of implantable devices and biosensors with improved clinical performance capabilities. However, in vivo degradation or denaturation of surface constituents often limits the long-term performance of bioactive films. Here we demonstrate the capacity to repeatedly regenerate a covalently immobilized monomolecular thin film of bioactive molecules through a two-step stripping and recharging cycle. Reversible transpeptidation by a laboratory evolved Staphylococcus aureus sortase A (eSrtA) enabled the rapid immobilization of an anti-thrombogenic film in the presence of whole blood and permitted multiple cycles of film regeneration in vitro that preserved its biological activity. Moreover, eSrtA transpeptidation facilitated surface re-engineering of medical devices in situ after in vivo implantation through removal and restoration film constituents. These studies establish a rapid, orthogonal and reversible biochemical scheme to regenerate selective molecular constituents with the potential to extend the lifetime of bioactive films. Bioactive coatings offer a strategy to modulate host response to implants, but their translation to the clinic is hampered by their fast in vivo degradation. Here, the authors use an engineered bacterial protein to regenerate an anti-thrombogenic film in vitro and in situ after device implantation.
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323
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Correro MR, Moridi N, Schützinger H, Sykora S, Ammann EM, Peters EH, Dudal Y, Corvini PFX, Shahgaldian P. Enzyme Shielding in an Enzyme-thin and Soft Organosilica Layer. Angew Chem Int Ed Engl 2016; 55:6285-9. [DOI: 10.1002/anie.201600590] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Indexed: 12/13/2022]
Affiliation(s)
- M. Rita Correro
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - Negar Moridi
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - Hansjörg Schützinger
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
- INOFEA AG; Hochbergerstrasse 60C 4057 Basel Switzerland
| | - Sabine Sykora
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - Erik M. Ammann
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - E. Henrik Peters
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - Yves Dudal
- INOFEA AG; Hochbergerstrasse 60C 4057 Basel Switzerland
| | - Philippe F.-X. Corvini
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
- School of the Environment; Nanjing University; 210093 Nanjing China
| | - Patrick Shahgaldian
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
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324
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Correro MR, Moridi N, Schützinger H, Sykora S, Ammann EM, Peters EH, Dudal Y, Corvini PFX, Shahgaldian P. Enzyme Shielding in an Enzyme-thin and Soft Organosilica Layer. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600590] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- M. Rita Correro
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - Negar Moridi
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - Hansjörg Schützinger
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
- INOFEA AG; Hochbergerstrasse 60C 4057 Basel Switzerland
| | - Sabine Sykora
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - Erik M. Ammann
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - E. Henrik Peters
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
| | - Yves Dudal
- INOFEA AG; Hochbergerstrasse 60C 4057 Basel Switzerland
| | - Philippe F.-X. Corvini
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
- School of the Environment; Nanjing University; 210093 Nanjing China
| | - Patrick Shahgaldian
- School of Life Science; University of Applied Sciences and Arts Northwestern Switzerland; Gründenstrasse 40 4132 Muttenz Switzerland
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325
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Esmaeilnejad-Ahranjani P, Kazemeini M, Singh G, Arpanaei A. Study of Molecular Conformation and Activity-Related Properties of Lipase Immobilized onto Core-Shell Structured Polyacrylic Acid-Coated Magnetic Silica Nanocomposite Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3242-3252. [PMID: 26986897 DOI: 10.1021/acs.langmuir.5b03614] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A facile approach for the preparation of core-shell structured poly(acrylic acid) (PAA)-coated Fe3O4 cluster@SiO2 nanocomposite particles as the support materials for the lipase immobilization is reported. Low- or high-molecular-weight (1800 and 100,000, respectively) PAA molecules were covalently attached onto the surface of amine-functionalized magnetic silica nanoacomposite particles. The successful preparation of particles were verified by scanning transmission electron microscopy (STEM), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), zeta potential measurement, and Fourier-transform infrared (FTIR) techniques. Once lipase is covalently immobilized onto the particles with an average diameter of 210 ± 50 nm, resulting from high binding sites concentrations on the low- and high-molecular-weight PAA-coated particles, high lipase immobilization efficiencies (86.2% and 89.9%, respectively), and loading capacities (786 and 816 mg g(-1), respectively) are obtained. Results from circular dichroism (CD) analysis and catalytic activity tests reveal an increase in the β-sheet content of lipase molecules upon immobilization, along with an enhancement in their activities and stabilities. The lipases immobilized onto the low- and high-molecular-weight PAA-coated particles show maximum activities at 55 and 50 °C, respectively, which are ∼28% and ∼15% higher than that of the free lipase at its own optimum temperature (40 °C), respectively. The immobilized lipases exhibit excellent performance at broader temperature and pH ranges and high thermal and storage stabilities, as well as superior reusability. These prepared magnetic nanocomposite particles can be offered as suitable support materials for efficient immobilization of enzymes and improvement of the immobilized enzymes properties.
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Affiliation(s)
- Parvaneh Esmaeilnejad-Ahranjani
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology , PO Box: 14965/161, Tehran, Iran
- Department of Chemical and Petroleum Engineering, Sharif University of Technology , Tehran, Iran
| | - Mohammad Kazemeini
- Department of Chemical and Petroleum Engineering, Sharif University of Technology , Tehran, Iran
| | - Gurvinder Singh
- Department of Materials Science and Engineering, Norwegian University of Science and Technology , Trondheim, Norway
| | - Ayyoob Arpanaei
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology , PO Box: 14965/161, Tehran, Iran
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326
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Improved Performance of Lipase Immobilized on Tannic Acid-Templated Mesoporous Silica Nanoparticles. Appl Biochem Biotechnol 2016; 179:1155-69. [DOI: 10.1007/s12010-016-2056-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/15/2016] [Indexed: 12/21/2022]
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327
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Lai E, Wang Y, Wei Y, Li G, Ma G. Covalent immobilization of trypsin onto thermo-sensitive poly(N-isopropylacrylamide-co-acrylic acid) microspheres with high activity and stability. J Appl Polym Sci 2016. [DOI: 10.1002/app.43343] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Enping Lai
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Yuxia Wang
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Yi Wei
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
| | - Guang Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering; Donghua University; Shanghai 201620 People's Republic of China
| | - Guanghui Ma
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 People's Republic of China
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328
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Misson M, Dai S, Jin B, Chen BH, Zhang H. Manipulation of nanofiber-based β-galactosidase nanoenvironment for enhancement of galacto-oligosaccharide production. J Biotechnol 2016; 222:56-64. [PMID: 26876609 DOI: 10.1016/j.jbiotec.2016.02.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 02/05/2016] [Accepted: 02/08/2016] [Indexed: 12/23/2022]
Abstract
The nanoenvironment of nanobiocatalysts, such as local hydrophobicity, pH and charge density, plays a significant role in optimizing the enzymatic selectivity and specificity. In this study, Kluyveromyces lactis β-galactosidase (Gal) was assembled onto polystyrene nanofibers (PSNFs) to form PSNF-Gal nanobiocatalysts. We proposed that local hydrophobicity on the nanofiber surface could expel water molecules so that the transgalactosylation would be preferable over hydrolysis during the bioconversion of lactose, thus improve the galacto-oligosaccharides (GOS) yield. PSNFs were fabricated by electro-spinning and the operational parameters were optimized to obtain the nanofibers with uniform size and ordered alignment. The resulting nanofibers were functionalized for enzyme immobilization through a chemical oxidation method. The functionalized PSNF improved the enzyme adsorption capacity up to 3100 mg/g nanofiber as well as enhanced the enzyme stability with 80% of its original activity. Importantly, the functionalized PSNF-Gal significantly improved the GOS yield and the production rate was up to 110 g/l/h in comparison with 37 g/l/h by free β-galactosidase. Our research findings demonstrate that the localized nanoenvironment of the PSNF-Gal nanobiocatalysts favour transgalactosylation over hydrolysis in lactose bioconversion.
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Affiliation(s)
- Mailin Misson
- School of Chemical Engineering, University of Adelaide, Adelaide SA 5000, Australia; Biotechnology Research Institute, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia
| | - Sheng Dai
- School of Chemical Engineering, University of Adelaide, Adelaide SA 5000, Australia
| | - Bo Jin
- School of Chemical Engineering, University of Adelaide, Adelaide SA 5000, Australia
| | - Bing H Chen
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Hu Zhang
- School of Chemical Engineering, University of Adelaide, Adelaide SA 5000, Australia.
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329
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Ribeiro AJS, Denisin AK, Wilson RE, Pruitt BL. For whom the cells pull: Hydrogel and micropost devices for measuring traction forces. Methods 2016; 94:51-64. [PMID: 26265073 PMCID: PMC4746112 DOI: 10.1016/j.ymeth.2015.08.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 07/10/2015] [Accepted: 08/06/2015] [Indexed: 01/16/2023] Open
Abstract
While performing several functions, adherent cells deform their surrounding substrate via stable adhesions that connect the intracellular cytoskeleton to the extracellular matrix. The traction forces that deform the substrate are studied in mechanotrasduction because they are affected by the mechanics of the extracellular milieu. We review the development and application of two methods widely used to measure traction forces generated by cells on 2D substrates: (i) traction force microscopy with polyacrylamide hydrogels and (ii) calculation of traction forces with arrays of deformable microposts. Measuring forces with these methods relies on measuring substrate displacements and converting them into forces. We describe approaches to determine force from displacements and elaborate on the necessary experimental conditions for this type of analysis. We emphasize device fabrication, mechanical calibration of substrates and covalent attachment of extracellular matrix proteins to substrates as key features in the design of experiments to measure cell traction forces with polyacrylamide hydrogels or microposts. We also report the challenges and achievements in integrating these methods with platforms for the mechanical stimulation of adherent cells. The approaches described here will enable new studies to understand cell mechanical outputs as a function of mechanical inputs and advance the understanding of mechanotransduction mechanisms.
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Affiliation(s)
- Alexandre J S Ribeiro
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, United States; Stanford Cardiovascular Institute, Stanford University, Stanford, CA 94305, United States
| | - Aleksandra K Denisin
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, United States; Stanford Bioengineering, Stanford University, Stanford, CA 94305, United States
| | - Robin E Wilson
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, United States
| | - Beth L Pruitt
- Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, United States; Stanford Cardiovascular Institute, Stanford University, Stanford, CA 94305, United States; Department of Molecular and Cellular Physiology, Stanford University, Stanford, CA 94305, United States.
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330
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Wang H, Black CT, Akcora P. Elastic Properties of Protein Functionalized Nanoporous Polymer Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:151-158. [PMID: 26672623 DOI: 10.1021/acs.langmuir.5b04334] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Retaining the conformational structure and bioactivity of immobilized proteins is important for biosensor designs and drug delivery systems. Confined environments often lead to changes in conformation and functions of proteins. In this study, lysozyme is chemically tethered into nanopores of polystyrene thin films, and submicron pores in poly(methyl methacrylate) films are functionalized with streptavidin. Nanoindentation experiments show that stiffness of streptavidin increases with decreasing submicron pore sizes. Lysozymes in polystyrene nanopores are found to behave stiffer than the submicron pore sizes and still retain their specific bioactivity relative to the proteins on flat surfaces. Our results show that protein functionalized ordered nanoporous polystyrene/poly(methyl methacrylate) films present heterogeneous elasticity and can be used to study interactions between free proteins and designed surfaces.
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Affiliation(s)
- Haoyu Wang
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology , 1 Castle Point on Hudson, Hoboken, New Jersey 07030, United States
| | - Charles T Black
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Pinar Akcora
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology , 1 Castle Point on Hudson, Hoboken, New Jersey 07030, United States
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331
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Sanchez A, Cruz J, Rueda N, dos Santos JCS, Torres R, Ortiz C, Villalonga R, Fernandez-Lafuente R. Inactivation of immobilized trypsin under dissimilar conditions produces trypsin molecules with different structures. RSC Adv 2016. [DOI: 10.1039/c6ra03627a] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Bovine trypsin immobilized on glyoxyl agarose and submitted to different inactivation conditions produce different conformations.
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Affiliation(s)
- Alfredo Sanchez
- Department of Analytical Chemistry
- Faculty of Chemistry
- Complutense University of Madrid
- 28040 Madrid
- Spain
| | - Jenifer Cruz
- Departamento de Biocatálisis
- Instituto de Catálisis-CSIC
- 28049 Madrid
- Spain
- Escuela de Química
| | - Nazzoly Rueda
- Departamento de Biocatálisis
- Instituto de Catálisis-CSIC
- 28049 Madrid
- Spain
- Escuela de Química
| | - Jose C. S. dos Santos
- Departamento de Biocatálisis
- Instituto de Catálisis-CSIC
- 28049 Madrid
- Spain
- Instituto de Engenharias e Desenvolvimento Sustentável
| | - Rodrigo Torres
- Escuela de Química
- Grupo de investigación en Bioquímica y Microbiología (GIBIM)
- Edificio Camilo Torres 210
- Universidad Industrial de Santander
- Bucaramanga
| | - Claudia Ortiz
- Escuela de Microbiología
- Universidad Industrial de Santander
- Bucaramanga
- Colombia
| | - Reynaldo Villalonga
- Department of Analytical Chemistry
- Faculty of Chemistry
- Complutense University of Madrid
- 28040 Madrid
- Spain
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332
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Surface Modification Chemistries of Materials Used in Diagnostic Platforms with Biomolecules. J CHEM-NY 2016. [DOI: 10.1155/2016/9241378] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Biomolecules including DNA, protein, and enzymes are of prime importance in biomedical field. There are several reports on the technologies for the detection of these biomolecules on various diagnostic platforms. It is important to note that the performance of the biosensor is highly dependent on the substrate material used and its meticulous modification for particular applications. Therefore, it is critical to understand the principles of a biosensor to identify the correct substrate material and its surface modification chemistry. The imperative surface modification for the attachment of biomolecules without losing their bioactivity is a key to sensitive detection. Therefore, finding of a modification method which gives minimum damage to the surface as well as biomolecule is highly inevitable. Different surface modification technologies are invented according to the type of a substrate used. Surface modification techniques of the materials used as platforms in the fabrication of biosensors are reviewed in this paper.
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333
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Farhadian S, Shareghi B, Saboury AA, Evini M. The influence of putrescine on the structure, enzyme activity and stability of α-chymotrypsin. RSC Adv 2016. [DOI: 10.1039/c5ra25053f] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Information on protein stability is essential to study protein structure, activity, and interactions with ligands.
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Affiliation(s)
- Sadegh Farhadian
- Department of Biology
- Faculty of Science
- University of Shahrekord
- Shahrekord
- Iran
| | - Behzad Shareghi
- Department of Biology
- Faculty of Science
- University of Shahrekord
- Shahrekord
- Iran
| | - Ali A. Saboury
- Institute of Biochemistry and Biophysics
- University of Tehran
- Tehran
- Iran
- Center of Excellence in Biothermodynamics
| | - Mina Evini
- Institute of Biochemistry and Biophysics
- University of Tehran
- Tehran
- Iran
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334
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Marques Netto CGC, da Silva DG, Toma SH, Andrade LH, Nakamura M, Araki K, Toma HE. Bovine glutamate dehydrogenase immobilization on magnetic nanoparticles: conformational changes and catalysis. RSC Adv 2016. [DOI: 10.1039/c5ra24637g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Glutamate dehydrogenase (GDH) was immobilized on different supports and systematically investigated in order to provide a better understanding of the immobilization effects on the catalysis of multimeric enzymes.
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Affiliation(s)
| | - Delmárcio G. da Silva
- Supramolecular NanotechLab
- Instituto de Quimica
- Universidade de São Paulo
- São Paulo-SP
- Brazil
| | - Sergio H. Toma
- Supramolecular NanotechLab
- Instituto de Quimica
- Universidade de São Paulo
- São Paulo-SP
- Brazil
| | - Leandro H. Andrade
- Laboratory of Fine Chemistry and Biocatalysis
- Instituto de Química
- Universidade de São Paulo
- São Paulo-SP
- Brazil
| | - Marcelo Nakamura
- Supramolecular NanotechLab
- Instituto de Quimica
- Universidade de São Paulo
- São Paulo-SP
- Brazil
| | - Koiti Araki
- Supramolecular NanotechLab
- Instituto de Quimica
- Universidade de São Paulo
- São Paulo-SP
- Brazil
| | - Henrique E. Toma
- Supramolecular NanotechLab
- Instituto de Quimica
- Universidade de São Paulo
- São Paulo-SP
- Brazil
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335
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Cipolatti EP, Valério A, Henriques RO, Moritz DE, Ninow JL, Freire DMG, Manoel EA, Fernandez-Lafuente R, de Oliveira D. Nanomaterials for biocatalyst immobilization – state of the art and future trends. RSC Adv 2016. [DOI: 10.1039/c6ra22047a] [Citation(s) in RCA: 238] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Advantages, drawbacks and trends in nanomaterials for enzyme immobilization.
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Affiliation(s)
- Eliane P. Cipolatti
- Chemical and Food Engineering Department
- Federal University of Santa Catarina (UFSC)
- Florianópolis
- Brazil
- Biochemistry Department
| | - Alexsandra Valério
- Chemical and Food Engineering Department
- Federal University of Santa Catarina (UFSC)
- Florianópolis
- Brazil
| | - Rosana O. Henriques
- Chemical and Food Engineering Department
- Federal University of Santa Catarina (UFSC)
- Florianópolis
- Brazil
| | - Denise E. Moritz
- Chemical and Food Engineering Department
- Federal University of Santa Catarina (UFSC)
- Florianópolis
- Brazil
| | - Jorge L. Ninow
- Chemical and Food Engineering Department
- Federal University of Santa Catarina (UFSC)
- Florianópolis
- Brazil
| | - Denise M. G. Freire
- Biochemistry Department
- Chemistry Institute
- Federal University of Rio de Janeiro
- 21949-909 Rio de Janeiro
- Brazil
| | - Evelin A. Manoel
- Biochemistry Department
- Chemistry Institute
- Federal University of Rio de Janeiro
- 21949-909 Rio de Janeiro
- Brazil
| | | | - Débora de Oliveira
- Chemical and Food Engineering Department
- Federal University of Santa Catarina (UFSC)
- Florianópolis
- Brazil
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336
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Rueda N, Santos JCD, Ortiz C, Barbosa O, Fernandez-Lafuente R, Torres R. Chemical amination of lipases improves their immobilization on octyl-glyoxyl agarose beads. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.05.027] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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337
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de Souza SP, Junior II, Silva GMA, Miranda LSM, Santiago MF, Leung-Yuk Lam F, Dawood A, Bornscheuer UT, de Souza ROMA. Cellulose as an efficient matrix for lipase and transaminase immobilization. RSC Adv 2016. [DOI: 10.1039/c5ra24976g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Continuous-flow biocatalysis using immobilized lipases and transaminases in order to synthesize chiral alcohols and amines respectively.
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Affiliation(s)
- Stefânia P. de Souza
- Biocatalysis and Organic Synthesis Group
- Chemistry Institute
- Federal University of Rio de Janeiro
- Rio de Janeiro
- Brazil
| | - Ivaldo I. Junior
- School of Chemistry
- University of Rio de Janeiro
- Rio de Janeiro
- Brazil
| | - Guilherme M. A. Silva
- Biocatalysis and Organic Synthesis Group
- Chemistry Institute
- Federal University of Rio de Janeiro
- Rio de Janeiro
- Brazil
| | - Leandro S. M. Miranda
- Biocatalysis and Organic Synthesis Group
- Chemistry Institute
- Federal University of Rio de Janeiro
- Rio de Janeiro
- Brazil
| | - Marcelo F. Santiago
- Institute of Biophysics Carlos Chagas Filho (IBCCF)
- Federal University of Rio de Janeiro (UFRJ)
- Rio de Janeiro
- Brazil
| | - Frank Leung-Yuk Lam
- Department of Chemical and Biomolecular Engineering
- The Hong Kong University of Science and Technology
- Hong Kong SAR
- China
| | - Ayad Dawood
- Institute of Biochemistry
- Dept. of Biotechnology & Enzyme Catalysis
- Greifswald University
- Greifswald
- Germany
| | - Uwe T. Bornscheuer
- Institute of Biochemistry
- Dept. of Biotechnology & Enzyme Catalysis
- Greifswald University
- Greifswald
- Germany
| | - Rodrigo O. M. A. de Souza
- Biocatalysis and Organic Synthesis Group
- Chemistry Institute
- Federal University of Rio de Janeiro
- Rio de Janeiro
- Brazil
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338
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Silva MC, Torres JA, Nogueira FGE, Tavares TS, Corrêa AD, Oliveira LCA, Ramalho TC. Immobilization of soybean peroxidase on silica-coated magnetic particles: a magnetically recoverable biocatalyst for pollutant removal. RSC Adv 2016. [DOI: 10.1039/c6ra17167b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Development of a recyclable biocatalystviaimmobilization of soybean peroxidase onto magnetic nanoparticles.
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Affiliation(s)
- Maria C. Silva
- Department of Chemistry
- Universidade Federal de Minas Gerais
- 31270-901 Belo Horizonte
- Brazil
| | | | | | | | | | - Luiz C. A. Oliveira
- Department of Chemistry
- Universidade Federal de Minas Gerais
- 31270-901 Belo Horizonte
- Brazil
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339
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Bolivar JM, Eisl I, Nidetzky B. Advanced characterization of immobilized enzymes as heterogeneous biocatalysts. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.05.004] [Citation(s) in RCA: 129] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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340
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Peng G, Hou X, Liu B, Chen H, Luo R. Stabilized enzyme immobilization on micron-size PSt–GMA microspheres: different methods to improve the carriers' surface biocompatibility. RSC Adv 2016. [DOI: 10.1039/c6ra18126k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stabilized immobilization of biomacromolecules on carriers with appropriate orientation and minimum conformational changes is very important in the biochemical and biomedical fields.
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Affiliation(s)
- Gang Peng
- Department of Chemistry and Material Science
- Hengyang Normal University
- Hengyang 421008
- China
- Key Laboratory of Functional Organometallic Materials of Hunan Province College
| | - Xiaohui Hou
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Bailing Liu
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Hualin Chen
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
| | - Rong Luo
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu
- China
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341
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Zhuang W, Zhang Y, Zhu J, An R, Li B, Mu L, Ying H, Wu J, Zhou J, Chen Y, Lu X. Influences of geometrical topography and surface chemistry on the stable immobilization of adenosine deaminase on mesoporous TiO 2. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2015.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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342
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Liang K, Coghlan CJ, Bell SG, Doonan C, Falcaro P. Enzyme encapsulation in zeolitic imidazolate frameworks: a comparison between controlled co-precipitation and biomimetic mineralisation. Chem Commun (Camb) 2016; 52:473-6. [DOI: 10.1039/c5cc07577g] [Citation(s) in RCA: 192] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Recent studies have demonstrated that metal–organic frameworks can be employed as protective coatings for enzymes.
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Affiliation(s)
- Kang Liang
- CSIRO Manufacturing Flagship
- Clayton South
- Australia
| | | | - Stephen G. Bell
- School of Chemistry and Physics
- The University of Adelaide
- Adelaide
- Australia
| | - Christian Doonan
- School of Chemistry and Physics
- The University of Adelaide
- Adelaide
- Australia
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343
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Xu Z, Wu Q, Yang M, Wang S, Wang Z, Xu X. Efficient asymmetric biosynthesis of (R)-(−)-epinephrine in hydrophilic ionic liquid-containing systems. RSC Adv 2016. [DOI: 10.1039/c6ra22140h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Acinetobacter sp. UN-16 cell biocatalytic process with [HOOCEMIM]NO3 is very promising for efficient preparation of (R)-(−)-epinephrine.
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Affiliation(s)
- Zhiqun Xu
- Key Laboratory of Biopharmaceutical
- College of Chemistry
- Fuzhou University
- Fuzhou
- P. R. China
| | - Qiao Wu
- Key Laboratory of Biopharmaceutical
- College of Chemistry
- Fuzhou University
- Fuzhou
- P. R. China
| | - Meixia Yang
- Key Laboratory of Biopharmaceutical
- College of Chemistry
- Fuzhou University
- Fuzhou
- P. R. China
| | - Shuai Wang
- Key Laboratory of Biopharmaceutical
- College of Chemistry
- Fuzhou University
- Fuzhou
- P. R. China
| | - Zhenshou Wang
- Key Laboratory of Biopharmaceutical
- College of Chemistry
- Fuzhou University
- Fuzhou
- P. R. China
| | - Xiaoping Xu
- Key Laboratory of Biopharmaceutical
- College of Chemistry
- Fuzhou University
- Fuzhou
- P. R. China
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344
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Bungaruang L, Gutmann A, Nidetzky B. β-Cyclodextrin Improves Solubility and EnzymaticC-Glucosylation of the Flavonoid Phloretin. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500838] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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345
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Wu X, Yang C, Ge J, Liu Z. Polydopamine tethered enzyme/metal-organic framework composites with high stability and reusability. NANOSCALE 2015; 7:18883-6. [PMID: 26393314 DOI: 10.1039/c5nr05190h] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
An enzyme/metal-organic framework (MOF) composite with both highly stable and easily reusable features was prepared via tethering enzyme/MOF nanocrystals with polydopamine (PDA). The micrometer-sized PDA tethered enzyme/MOF composite can be easily repeatedly used without obvious activity loss, promising for efficient enzymatic catalysis at low cost with long-term operational stability under harsh conditions.
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Affiliation(s)
- Xiaoling Wu
- Key Lab for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
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346
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Nimse SB, Sonawane MD, Song KS, Kim T. Biomarker detection technologies and future directions. Analyst 2015; 141:740-55. [PMID: 26583164 DOI: 10.1039/c5an01790d] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Biomarkers play a vital role in disease detection and treatment follow-up. It is important to note that diseases in the early stage are typically treated with the greatest probability of success. However, due to various technical difficulties in current technologies for the detection of biomarkers, the potential of biomarkers is not explored completely. Therefore, the developments of technologies, which can enable the accurate detection of prostate cancer at an early stage with simple, experimental protocols are highly inevitable. This critical review evaluates the current methods and technologies used in the detection of biomarkers. The aim of this article is to provide a comprehensive review covering the advantages and disadvantages of the biomarker detection methods. Future directions for the development of technologies to achieve highly selective and sensitive detection of biomarkers for point-of-care applications are also commented on.
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Affiliation(s)
- Satish Balasaheb Nimse
- Institute for Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon, 200-702, Korea.
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347
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Sührer I, Langemann T, Lubitz W, Weuster-Botz D, Castiglione K. A novel one-step expression and immobilization method for the production of biocatalytic preparations. Microb Cell Fact 2015; 14:180. [PMID: 26577293 PMCID: PMC4650107 DOI: 10.1186/s12934-015-0371-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 05/28/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Whole cell biocatalysts and isolated enzymes are considered as state of the art in biocatalytic preparations for industrial applications. Whole cells as biocatalysts are disadvantageous if substrate or products are toxic to the cells or undesired byproducts are formed due to the cellular metabolism. The use of isolated enzymes in comparison is more expensive due to the required downstream processing. Immobilization of enzymes after purification increases preparation costs for biocatalysts significantly, but allows for the efficient reuse of the enzymes in the biocatalytic process. For a more rapid processing one-step expression and immobilization is desirable. RESULTS This study focused on the development of a new one-step expression and immobilization technique for enzymes on the example of the β-galactosidase from Escherichia coli K12. The enzyme was expressed in E. coli with a C-terminal membrane anchor originating from cytochrome b5 from rabbit liver and was thus in situ immobilized to the inner surface of the cytosolic membrane. Then, the expression of a lytic phage protein (gene E from PhiX174) caused the formation of a pore in the cell wall of E. coli, which resulted in release of the cytosol. The cellular envelopes with immobilized enzymes were retained. Batch and fed-batch processes were developed for efficient production of these biocatalysts. It was possible to obtain cellular envelopes with up to 27,200 ± 10,460 immobilized enzyme molecules per cellular envelope (753 ± 190 U/gdry weight). A thorough characterization of the effects of membrane immobilization was performed. Comparison to whole cells showed that mass transfer limitation was reduced in cellular envelopes due to the pore formation. CONCLUSION In this study the feasibility of a new one-step expression and immobilization technique for the generation of biocatalytic preparations was demonstrated. The technique could be a useful tool especially for enzyme systems, which are not suitable for whole-cell biocatalysts due to severe mass transfer limitations or undesired side reactions mediated by cytosolic enzymes.
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Affiliation(s)
- Ilka Sührer
- Institute of Biochemical Engineering, Technische Universität München, Boltzmannstr. 15, 85748, Garching, Germany.
| | - Timo Langemann
- BIRD-C GmbH & Co KG, Erne-Seder-Gasse 4/2, 1030, Vienna, Austria.
| | - Werner Lubitz
- BIRD-C GmbH & Co KG, Erne-Seder-Gasse 4/2, 1030, Vienna, Austria.
| | - Dirk Weuster-Botz
- Institute of Biochemical Engineering, Technische Universität München, Boltzmannstr. 15, 85748, Garching, Germany.
| | - Kathrin Castiglione
- Institute of Biochemical Engineering, Technische Universität München, Boltzmannstr. 15, 85748, Garching, Germany.
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348
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Park WM, Yee CM, Champion JA. Self-assembled hybrid supraparticles that proteolytically degrade tumor necrosis factor-α. J Mater Chem B 2015; 4:1633-1639. [PMID: 32263016 DOI: 10.1039/c5tb01647a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strategies of pathogens to evade the human immune system are highly sophisticated and modulate a variety of inflammatory pathways. The similarities in the demands for modulation of inflammatory responses during disease treatment and during pathogenic infection provide opportunities to use pathogenic virulence factors to develop a new class of therapeutic materials that control inflammation. In this work, we harness a strategy from Porphyromonas gingivalis by transforming its major virulence factor, an arginine-specific cysteine protease, into self-assembled protease-inorganic hybrid supraparticles. The cysteine protease degrades the pro-inflammatory cytokine tumor necrosis factor-alpha (TNF-α). It is an irreversible inhibition of TNF-α, which avoids some of the adverse effects of current TNF-α antagonists. We fabricated self-assembled porous supraparticles that specifically incorporate the pathogen-derived protease and showed improved inactivation of TNF-α over soluble enzyme, creating a potential therapeutic for various autoimmune diseases or other sources of inflammation.
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Affiliation(s)
- Won Min Park
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive NW, Atlanta, GA 30332, USA.
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349
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Specificity enhancement towards phenolic substrate by immobilization of laccase on surface plasmon resonance sensor chip. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2015.07.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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350
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Derr L, Dringen R, Treccani L, Hildebrand N, Ciacchi LC, Rezwan K. Physisorption of enzymatically active chymotrypsin on titania colloidal particles. J Colloid Interface Sci 2015; 455:236-44. [DOI: 10.1016/j.jcis.2015.05.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/12/2015] [Accepted: 05/12/2015] [Indexed: 10/23/2022]
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