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Petermeier P, Bittner JP, Jonsson T, Domínguez de María P, Byström E, Kara S. Integrated preservation of water activity as key to intensified chemoenzymatic synthesis of bio-based styrene derivatives. Commun Chem 2024; 7:57. [PMID: 38485751 PMCID: PMC10940287 DOI: 10.1038/s42004-024-01138-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 02/27/2024] [Indexed: 03/18/2024] Open
Abstract
The valorization of lignin-derived feedstocks by catalytic means enables their defunctionalization and upgrading to valuable products. However, the development of productive, safe, and low-waste processes remains challenging. This paper explores the industrial potential of a chemoenzymatic reaction performing the decarboxylation of bio-based phenolic acids in wet cyclopentyl methyl ether (CPME) by immobilized phenolic acid decarboxylase from Bacillus subtilis, followed by a base-catalyzed acylation. Key-to-success is the continuous control of water activity, which fluctuates along the reaction progress, particularly at high substrate loadings (triggered by different hydrophilicities of substrate and product). A combination of experimentation, thermodynamic equilibrium calculations, and MD simulations revealed the change in water activity which guided the integration of water reservoirs and allowed process intensification of the previously limiting enzymatic step. With this, the highly concentrated sequential two-step cascade (400 g·L-1) achieves full conversions and affords products in less than 3 h. The chemical step is versatile, accepting different acyl donors, leading to a range of industrially sound products. Importantly, the finding that water activity changes in intensified processes is an academic insight that might explain other deactivations of enzymes when used in non-conventional media.
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Affiliation(s)
- Philipp Petermeier
- Biocatalysis and Bioprocessing Group, Department of Biological and Chemical Engineering, Aarhus University, 8000, Aarhus C, Denmark
| | - Jan Philipp Bittner
- Institute of Thermal Separation Processes, Hamburg University of Technology, 21073, Hamburg, Germany
| | | | - Pablo Domínguez de María
- Sustainable Momentum SL, Av. Ansite 3, 4-6, 35011, Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Emil Byström
- SpinChem AB, Tvistevägen 48C, 90736, Umeå, Sweden
| | - Selin Kara
- Biocatalysis and Bioprocessing Group, Department of Biological and Chemical Engineering, Aarhus University, 8000, Aarhus C, Denmark.
- Institute of Technical Chemistry, Leibniz University Hannover, 30167, Hannover, Germany.
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2
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Han SY, Kim N, Yun G, Lee H, Choi IS. Tandem-biocatalysis reactors constructed by topological evolution of CaCO 3 particles into hollow metal hydroxide spheres. Nat Commun 2023; 14:6828. [PMID: 37884545 PMCID: PMC10603116 DOI: 10.1038/s41467-023-42649-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 10/18/2023] [Indexed: 10/28/2023] Open
Abstract
Despite remarkable advances in the design and synthesis of hollow inorganic spheres (HISs), the harsh synthetic conditions have precluded the applications of HISs to biochemical and biological fields. Herein we report a biocompatible strategy for synthesizing metal hydroxide HISs (MH-HISs) by simply mixing CaCO3 particles with metal ions in water. The ion-exchange reaction between Ca2+ and metal ions leads to the structural and chemical evolution from solid CaCO3 particles to hollow MH-HISs via core-shell and yolk-shell structures, while enabling the encapsulation of enzymes to the shells without loss of catalytic activities. The biocompatible protocol makes multienzymatic cascade reactions achievable, with great recyclability due to mechanical durability of MH-HISs.
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Affiliation(s)
- Sang Yeong Han
- Center for Cell-Encapsulation Research, Department of Chemistry, KAIST, Daejeon, 34141, Korea
| | - Nayoung Kim
- Center for Cell-Encapsulation Research, Department of Chemistry, KAIST, Daejeon, 34141, Korea
| | - Gyeongwon Yun
- Center for Cell-Encapsulation Research, Department of Chemistry, KAIST, Daejeon, 34141, Korea
| | - Hojae Lee
- Department of Chemistry, Hallym University, Chuncheon, 24252, Korea
| | - Insung S Choi
- Center for Cell-Encapsulation Research, Department of Chemistry, KAIST, Daejeon, 34141, Korea.
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3
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Zhao Y, Li X, Guo S, Xu J, Cui Y, Zheng M, Liu J. Thermodynamics and Physicochemical Properties of Immobilized Maleic Anhydride-Modified Xylanase and Its Application in the Extraction of Oligosaccharides from Wheat Bran. Foods 2023; 12:2424. [PMID: 37372634 DOI: 10.3390/foods12122424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/14/2023] [Accepted: 06/17/2023] [Indexed: 06/29/2023] Open
Abstract
Xylanases are the preferred enzymes for the extracting of oligosaccharides from wheat bran. However, free xylanases have poor stability and are difficult to reuse, which limit their industrial application. In the present study, we covalently immobilized free maleic anhydride-modified xylanase (FMA-XY) to improve its reusability and stability. The immobilized maleic anhydride-modified xylanase (IMA-XY) exhibited better stability compared with the free enzyme. After six repeated uses, 52.24% of the activity of the immobilized enzyme remained. The wheat bran oligosaccharides extracted using IMA-XY were mainly xylopentoses, xylohexoses, and xyloheptoses, which were the β-configurational units and α-configurational units of xylose. The oligosaccharides also exhibited good antioxidant properties. The results indicated that FMA-XY can easily be recycled and can remain stable after immobilization; therefore, it has good prospects for future industrial applications.
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Affiliation(s)
- Yang Zhao
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Xinrui Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Shuo Guo
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Jingwen Xu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Yan Cui
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Mingzhu Zheng
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
| | - Jingsheng Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
- National Engineering Research Center for Wheat and Corn Deep Processing, Changchun 130118, China
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Pang J, Jiang M, Liu Y, Li M, Sun J, Wang C, Li X. [Preparation and catalytic properties of catalase-inorganic hybrid nanoflowers]. Sheng Wu Gong Cheng Xue Bao 2022; 38:4705-4718. [PMID: 36593204 DOI: 10.13345/j.cjb.220381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Catalase is widely used in the food, medical, and textile industries. It possesses exceptional properties including high catalytic efficiency, high specificity, and environmental friendliness. Free catalase cannot be recycled and reused in industry, resulting in a costly industrial biotransformation process if catalase is used as a core ingredient. Developing a simple, mild, cost-effective, and environmentally friendly approach to immobilize catalase is anticipated to improve its utilization efficiency and enzymatic performance. In this study, the catalase KatA derived from Bacillus subtilis 168 was expressed in Escherichia coli. Following separation and purification, the purified enzyme was prepared as an immobilized enzyme in the form of enzyme-inorganic hybrid nanoflowers, and the enzymatic properties were investigated. The results indicated that the purified KatA was obtained through a three-step procedure that included ethanol precipitation, DEAE anion exchange chromatography, and hydrophobic chromatography. Then, by optimizing the process parameters, a novel KatA/Ca3(PO4)2 hybrid nanoflower was developed. The optimum reaction temperature of the free KatA was determined to be 35 ℃, the optimum reaction temperature of KatA/Ca3(PO4)2 hybrid nanoflowers was 30-35 ℃, and the optimum reaction pH of both was 11.0. The free KatA and KatA/Ca3(PO4)2 hybrid nanoflowers exhibited excellent stability at pH 4.0-11.0 and 25-50 ℃. The KatA/Ca3(PO4)2 hybrid nanoflowers demonstrated increased storage stability than that of the free KatA, maintaining 82% of the original enzymatic activity after 14 d of storage at 4 ℃, whereas the free KatA has only 50% of the original enzymatic activity. In addition, after 5 catalytic reactions, the nanoflower still maintained 55% of its initial enzymatic activity, indicating that it has good operational stability. The Km of the free KatA to the substrate hydrogen peroxide was (8.80±0.42) mmol/L, and the kcat/Km was (13 151.53± 299.19) L/(mmol·s). The Km of the KatA/Ca3(PO4)2 hybrid nanoflowers was (32.75±2.96) mmol/L, and the kcat/Km was (4 550.67±107.51) L/(mmol·s). Compared to the free KatA, the affinity of KatA/Ca3(PO4)2 hybrid nanoflowers to the substrate hydrogen peroxide was decreased, and the catalytic efficiency was also decreased. In summary, this study developed KatA/Ca3(PO4)2 hybrid nanoflowers using Ca2+ as a self-assembly inducer, which enhanced the enzymatic properties and will facilitate the environmentally friendly preparation and widespread application of immobilized catalase.
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Affiliation(s)
- Jiao Pang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Mengtong Jiang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Yuxin Liu
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Mingyu Li
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Jiaming Sun
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Conggang Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China
| | - Xianzhen Li
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning, China
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Michielin G, Maerkl SJ. Direct encapsulation of biomolecules in semi-permeable microcapsules produced with double-emulsions. Sci Rep 2022; 12:21391. [PMID: 36496516 PMCID: PMC9736714 DOI: 10.1038/s41598-022-25895-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/06/2022] [Indexed: 12/13/2022] Open
Abstract
Compartmentalization can serve different purposes such as the protection of biological active substances from the environment, or the creation of a unique combination of biomolecules for diagnostic, therapeutic, or other bioengineering applications. We present a method for direct encapsulation of molecules in biocompatible and semi-permeable microcapsules made from low-molecular weight poly(ethylene glycol) diacrylate (PEG-DA 258). Microcapsules are produced using a non-planar PDMS microfluidic chip allowing for one-step production of water-in-PEG-DA 258-in-water double-emulsions, which are polymerized with UV light into a poly-PEG-DA 258 shell. Semi-permeable microcapsules are obtained by adding an inert solvent to the PEG-DA 258. Due to the favorable hydrophilicity of poly-PEG-DA 258, proteins do not adsorb to the capsule shell, and we demonstrate the direct encapsulation of enzymes, which can also be dried in the capsules to preserve activity. Finally, we leverage capsule permeability for the implementation of a two-layer communication cascade using compartmentalized DNA strand displacement reactions. This work presents the direct encapsulation of active biomolecules in semi-permeable microcapsules, and we expect our platform to facilitate the development of artificial cells and generating encapsulated diagnostics or therapeutics.
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Affiliation(s)
- Grégoire Michielin
- grid.5333.60000000121839049School of Engineering, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Sebastian J. Maerkl
- grid.5333.60000000121839049School of Engineering, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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6
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Benítez-Mateos AI, Schneider A, Hegarty E, Hauer B, Paradisi F. Spheroplasts preparation boosts the catalytic potential of a squalene-hopene cyclase. Nat Commun 2022; 13:6269. [PMID: 36271006 DOI: 10.1038/s41467-022-34030-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 10/11/2022] [Indexed: 12/25/2022] Open
Abstract
Squalene-hopene cyclases are a highly valuable and attractive class of membrane-bound enzymes as sustainable biotechnological tools to produce aromas and bioactive compounds at industrial scale. However, their application as whole-cell biocatalysts suffer from the outer cell membrane acting as a diffusion barrier for the highly hydrophobic substrate/product, while the use of purified enzymes leads to dramatic loss of stability. Here we present an unexplored strategy for biocatalysis: the application of squalene-hopene-cyclase spheroplasts. By removing the outer cell membrane, we produce stable and substrate-accessible biocatalysts. These spheroplasts exhibit up to 100-fold higher activity than their whole-cell counterparts for the biotransformations of squalene, geranyl acetone, farnesol, and farnesyl acetone. Their catalytic ability is also higher than the purified enzyme for all high molecular weight terpenes. In addition, we introduce a concept for the carrier-free immobilization of spheroplasts via crosslinking, crosslinked spheroplasts. The crosslinked spheroplasts maintain the same catalytic activity of the spheroplasts, offering additional advantages such as recycling and reuse. These timely solutions contribute not only to harness the catalytic potential of the squalene-hopene cyclases, but also to make biocatalytic processes even greener and more cost-efficient.
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7
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Fang Y, Changavi A, Yang M, Sun L, Zhang A, Sun D, Sun Z, Zhang B, Xu M. Nanopore Whole Transcriptome Analysis and Pathogen Surveillance by a Novel Solid-Phase Catalysis Approach. Adv Sci (Weinh) 2022; 9:e2103373. [PMID: 34837482 PMCID: PMC8787394 DOI: 10.1002/advs.202103373] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 10/28/2021] [Indexed: 06/13/2023]
Abstract
The requirement of a large input amount (500 ng) for Nanopore direct RNA-seq presents a major challenge for low input transcriptomic analysis and early pathogen surveillance. The high RNA input requirement is attributed to significant sample loss associated with library preparation using solid-phase reversible immobilization (SPRI) beads. A novel solid-phase catalysis strategy for RNA library preparation to circumvent the need for SPRI bead purification to remove enzymes is reported here. This new approach leverages concurrent processing of non-polyadenylated transcripts with immobilized poly(A) polymerase and T4 DNA ligase, followed by directly loading the prepared library onto a flow cell. Whole transcriptome sequencing, using a human pathogen Listeria monocytogenes as a model, demonstrates this new method displays little sample loss, takes much less time, and generates higher sequencing throughput correlated with reduced nanopore fouling compared to the current library preparation for 500 ng input. Consequently, this approach enables Nanopore low-input direct RNA-seq, improving pathogen detection and transcript identification in a microbial community standard with spike-in transcript controls. Besides, as evident in the bioinformatic analysis, the new method provides accurate RNA consensus with high fidelity and identifies higher numbers of expressed genes for both high and low input RNA amounts.
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Affiliation(s)
- Yi Fang
- New England Biolabs, Inc.IpswichMA01938USA
| | | | - Manyun Yang
- Department of Microbiology and ImmunologyCornell UniversityIthacaNY14853USA
| | - Luo Sun
- New England Biolabs, Inc.IpswichMA01938USA
| | | | - Daniel Sun
- New England Biolabs, Inc.IpswichMA01938USA
| | - Zhiyi Sun
- New England Biolabs, Inc.IpswichMA01938USA
| | - Boce Zhang
- Department of Food Science and Human NutritionUniversity of FloridaGainesvilleFL32603USA
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Almeida MR, Cristóvão RO, Barros MA, Nunes JCF, Boaventura RAR, Loureiro JM, Faria JL, Neves MC, Freire MG, Santos-Ebinuma VC, Tavares APM, Silva CG. Superior operational stability of immobilized L-asparaginase over surface-modified carbon nanotubes. Sci Rep 2021; 11:21529. [PMID: 34728685 PMCID: PMC8563809 DOI: 10.1038/s41598-021-00841-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 10/19/2021] [Indexed: 11/09/2022] Open
Abstract
L-asparaginase (ASNase, EC 3.5.1.1) is an enzyme that catalyzes the L-asparagine hydrolysis into L-aspartic acid and ammonia, being mainly applied in pharmaceutical and food industries. However, some disadvantages are associated with its free form, such as the ASNase short half-life, which may be overcome by enzyme immobilization. In this work, the immobilization of ASNase by adsorption over pristine and modified multi-walled carbon nanotubes (MWCNTs) was investigated, the latter corresponding to functionalized MWCNTs through a hydrothermal oxidation treatment. Different operating conditions, including pH, contact time and ASNase/MWCNT mass ratio, as well as the operational stability of the immobilized ASNase, were evaluated. For comparison purposes, data regarding the ASNase immobilization with pristine MWCNT was detailed. The characterization of the ASNase-MWCNT bioconjugate was addressed using different techniques, namely Transmission Electron Microscopy (TEM), Thermogravimetric Analysis (TGA) and Raman spectroscopy. Functionalized MWCNTs showed promising results, with an immobilization yield and a relative recovered activity of commercial ASNase above 95% under the optimized adsorption conditions (pH 8, 60 min of contact and 1.5 × 10-3 g mL-1 of ASNase). The ASNase-MWCNT bioconjugate also showed improved enzyme operational stability (6 consecutive reaction cycles without activity loss), paving the way for its use in industrial processes.
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Affiliation(s)
- Mafalda R Almeida
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Raquel O Cristóvão
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua do Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Maria A Barros
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua do Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - João C F Nunes
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Rui A R Boaventura
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua do Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - José M Loureiro
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua do Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Joaquim L Faria
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua do Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - Márcia C Neves
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Mara G Freire
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
| | - Valéria C Santos-Ebinuma
- Department of Engineering Bioprocess and Biotechnology, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, Brazil
| | - Ana P M Tavares
- CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Cláudia G Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua do Dr. Roberto Frias, 4200-465, Porto, Portugal.
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Messner L, Antink MH, Guo T, Maas M, Beutel S. A versatile ceramic capillary membrane reactor system for continuous enzyme-catalyzed hydrolysis. Eng Life Sci 2021; 21:527-538. [PMID: 34584517 PMCID: PMC8456322 DOI: 10.1002/elsc.202100027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 06/14/2021] [Accepted: 06/24/2021] [Indexed: 01/06/2023] Open
Abstract
As an alternative to classical batch processes, enzyme-catalyzed hydrolysis can also be carried out continuously. To facilitate this, a continuous ceramic capillary membrane reactor system (CCCMRS) was developed which can be operated with various proteolytic enzymes immobilized on the porous ceramic capillary membranes. This system has several advantages over common batch processes regarding stability, reproducibility and controllability and can easily be adapted to optimal reaction conditions and individual preferences. Two exemplary applications utilizing the CCCMRS were carried out and investigated in long-term stability studies. In the first application the continuous enzymatic cleavage of human IgG into the antibody fragments Fab and Fc by immobilized papain was performed. A total volume of 22 mL of 1 mg mL-1 IgG-solution was enzymatically cleaved over a period of 33.3 h. The antibody cleavage products could be detected in an SEC-HPLC over the whole process time thus indicating long-term stability of the continuous hydrolysis process. The second application investigated the continuous digestion of pea and almond protein isolates by immobilized Alcalase resulting in the generation of a large variety of different peptides. This peptide fingerprint remains constant over a long period of time enabling fractionation and thus making the peptides accessible for further bioactivity studies in sufficient quantities. The constant peptide fingerprint could be shown in the RP-HPLC analysis for all 30 samples with a total volume of 29.7 mL collected over a period of 45 h.
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Affiliation(s)
- Lorn Messner
- Institute for Technical ChemistryLeibniz University HannoverHannoverGermany
| | | | - Tongwei Guo
- Advanced CeramicsUniversity of BremenBremenGermany
| | - Michael Maas
- Advanced CeramicsUniversity of BremenBremenGermany
- MAPEX Center for Materials and ProcessesUniversity of BremenBremenGermany
| | - Sascha Beutel
- Institute for Technical ChemistryLeibniz University HannoverHannoverGermany
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10
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Matveeva VG, Bronstein LM. Magnetic Nanoparticle-Containing Supports as Carriers of Immobilized Enzymes: Key Factors Influencing the Biocatalyst Performance. Nanomaterials (Basel) 2021; 11:nano11092257. [PMID: 34578573 PMCID: PMC8469579 DOI: 10.3390/nano11092257] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/27/2021] [Accepted: 08/28/2021] [Indexed: 12/23/2022]
Abstract
In this short review (Perspective), we identify key features of the performance of biocatalysts developed by the immobilization of enzymes on the supports containing magnetic nanoparticles (NPs), analyzing the scientific literature for the last five years. A clear advantage of magnetic supports is their easy separation due to the magnetic attraction between magnetic NPs and an external magnetic field, facilitating the biocatalyst reuse. This allows for savings of materials and energy in the biocatalytic process. Commonly, magnetic NPs are isolated from enzymes either by polymers, silica, or some other protective layer. However, in those cases when iron oxide NPs are in close proximity to the enzyme, the biocatalyst may display a fascinating behavior, allowing for synergy of the performance due to the enzyme-like properties shown in iron oxides. Another important parameter which is discussed in this review is the magnetic support porosity, especially in hierarchical porous supports. In the case of comparatively large pores, which can freely accommodate enzyme molecules without jeopardizing their conformation, the enzyme surface ordering may create an optimal crowding on the support, enhancing the biocatalytic performance. Other factors such as surface-modifying agents or special enzyme reactor designs can be also influential in the performance of magnetic NP based immobilized enzymes.
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Affiliation(s)
- Valentina G. Matveeva
- Department of Biotechnology and Chemistry, Tver State Technical University, 22 A. Nikitina St, 170026 Tver, Russia;
- Regional Technological Centre, Tver State University, Zhelyabova Str., 33, 170100 Tver, Russia
| | - Lyudmila M. Bronstein
- Department of Biotechnology and Chemistry, Tver State Technical University, 22 A. Nikitina St, 170026 Tver, Russia;
- Department of Chemistry, Indiana University, 800 E. Kirkwood Av., Bloomington, IN 47405, USA
- Department of Physics, Faculty of Science, King Abdulaziz University, P.O. Box 80303, Jeddah 21589, Saudi Arabia
- Correspondence:
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11
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Wells PK, Smutok O, Melman A, Katz E. Switchable Biocatalytic Reactions Controlled by Interfacial pH Changes Produced by Orthogonal Biocatalytic Processes. ACS Appl Mater Interfaces 2021; 13:33830-33839. [PMID: 34264645 DOI: 10.1021/acsami.1c07393] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Enzymes immobilized on a nano-structured surface were used to switch the activity of one enzyme by a local pH change produced by another enzyme. Immobilized amyloglucosidase (AMG) and trypsin were studied as examples of the pH-dependent switchable "target enzymes." The reactions catalyzed by co-immobilized urease or esterase were increasing or decreasing the local pH, respectively, thus operating as "actuator enzymes." Both kinds of the enzymes, producing local pH changes and changing biocatalytic activity with the pH variation, were orthogonal in terms of the biocatalytic reactions; however, their operation was coupled with the local pH produced near the surface with the immobilized enzymes. The "target enzymes" (AMG and trypsin) were changed reversibly between the active and inactive states by applying input signals (urea or ester, substrates for the urease or esterase operating as the "actuator enzymes") and washing them out with a new portion of the background solution. The developed approach can potentially lead to switchable operation of several enzymes, while some of them are inhibited when the others are activated upon receiving external signals processed by the "actuator enzymes." More complex systems with branched biocatalytic cascades can be controlled by orthogonal biocatalytic reactions activating selected pathways and changing the final output.
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Affiliation(s)
- Paulina K Wells
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Oleh Smutok
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Artem Melman
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Evgeny Katz
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
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12
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Chondrogiannis G, Khaliliazar S, Toldrà A, Réu P, Hamedi MM. Nitrocellulose-bound achromopeptidase for point-of-care nucleic acid tests. Sci Rep 2021; 11:6140. [PMID: 33731748 PMCID: PMC7969615 DOI: 10.1038/s41598-021-85481-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 02/24/2021] [Indexed: 11/23/2022] Open
Abstract
Enzymes are the cornerstone of modern biotechnology. Achromopeptidase (ACP) is a well-known enzyme that hydrolyzes a number of proteins, notably proteins on the surface of Gram-positive bacteria. It is therefore used for sample preparation in nucleic acid tests. However, ACP inhibits DNA amplification which makes its integration difficult. Heat is commonly used to inactivate ACP, but it can be challenging to integrate heating into point-of-care devices. Here, we use recombinase polymerase amplification (RPA) together with ACP, and show that when ACP is immobilized on nitrocellulose paper, it retains its enzymatic function and can easily and rapidly be activated using agitation. The nitrocellulose-bound ACP does, however, not leak into the solution, preventing the need for deactivation through heat or by other means. Nitrocellulose-bound ACP thus opens new possibilities for paper-based Point-of-Care (POC) devices.
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Affiliation(s)
- Georgios Chondrogiannis
- School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Shirin Khaliliazar
- School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Anna Toldrà
- School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Pedro Réu
- School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden.
| | - Mahiar M Hamedi
- School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden.
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13
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Benítez-Mateos AI, Huber C, Nidetzky B, Bolivar JM, López-Gallego F. Design of the Enzyme-Carrier Interface to Overcome the O 2 and NADH Mass Transfer Limitations of an Immobilized Flavin Oxidase. ACS Appl Mater Interfaces 2020; 12:56027-56038. [PMID: 33275418 DOI: 10.1021/acsami.0c17568] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Understanding how the immobilization of enzymes on solid carriers affects their performance is paramount for the design of highly efficient heterogeneous biocatalysts. An efficient supply of substrates onto the solid phase is one of the main challenges to maximize the activity of the immobilized enzymes. Herein, we apply advanced single-particle analysis to decipher the optimal design of an immobilized NADH oxidase (NOX) whose activity depends both on O2 and NADH concentrations. Carrier physicochemical properties and its functionality along with the enzyme distribution across the carrier were implemented as design variables to study the effects of the intraparticle concentration of substrates (O2 and NADH) on the activity. Intraparticle O2-sensing analysis revealed the superior performance of the enzyme immobilized at the outer surface in terms of effective supply of O2. Furthermore, the co-immobilization of NADH and NOX within the tuned surface of porous microbeads increases the effective concentration of NADH in the surroundings of the enzyme. As a result, the optimal spatial organization of NOX and its confinement with NADH allow a 100% recovery of the activity of the soluble enzyme upon the immobilization process. By engineering these variables, we increase the NADH oxidation activity of the heterogeneous biocatalyst by up to 650% compared to NOX immobilized under suboptimal conditions. In conclusion, this work highlights the rational design and engineering of the enzyme-carrier interface to maximize the efficiency of heterogeneous biocatalysts.
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Affiliation(s)
- Ana I Benítez-Mateos
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, Donostia San Sebastián 20014, Spain
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza 50009, Spain
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse3, Bern 3012, Switzerland
| | - Christina Huber
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, Petersgasse 12, Graz A-8010, Austria
| | - Bernd Nidetzky
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, Petersgasse 12, Graz A-8010, Austria
- Austrian Centre of Industrial Biotechnology, Krenngasse 37, Graz A-8010, Austria
| | - Juan M Bolivar
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, Petersgasse 12, Graz A-8010, Austria
- Department of Chemical and Materials Engineering, Complutense University of Madrid, 28040, Madrid, Spain
| | - Fernando López-Gallego
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, Donostia San Sebastián 20014, Spain
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, Zaragoza 50009, Spain
- Ikerbasque, Basque Foundation for Science, Maria Diaz de Haro 3, Bilbao 48013, Spain
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14
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Simões BM, Grossmann MVE, Baron AM, Andrade MM, de Castro MDC, Farias TLDS, de Almeida DA, Garcia PS. Production of starch-polyester bio-support for lipases immobilization: synergistic action of itaconic acid and nanoclay. Prep Biochem Biotechnol 2020; 51:580-588. [PMID: 33135968 DOI: 10.1080/10826068.2020.1839906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The objective of the present work was to develop biodegradable polymeric films (starch-PBAT) as support for the immobilization of lipases using sodium montmorillonite (MMT) as a reinforcing agent (2% w/w) and itaconic acid (IA - 0.5-1.5% w/w) as a compatibilizing agent. The films were produced through a two steps blow-extrusion. The addition of MMT increased the tensile strength and Tg of the films, while the presence of IA made the films more flexible, reducing their Tg. Lipases from Burkholderia cepacia LTEB11 were immobilized in the films by the adsorption method. The ester yield (% of ethyl oleate synthesis) has shown best results (96%, 6 h) for immobilized enzyme in the MMT film and six cycles of reuse were carried out until a reduction of 50% in the catalytic activity of the enzyme.
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Affiliation(s)
- Bruno Matheus Simões
- Departamento de Ciência e Tecnologia de Alimentos, Universidade Estadual de Londrina, Londrina, PR, Brasil
| | | | - Alessandra Machado Baron
- Universidade Tecnológica Federal do Paraná, Câmpus Apucarana - Coordenação de Licenciatura em Química (COLIQ), Apucarana, Brazil
| | - Milena Martins Andrade
- Universidade Tecnológica Federal do Paraná, Câmpus Apucarana - Coordenação de Licenciatura em Química (COLIQ), Apucarana, Brazil
| | - Michael da Conceição de Castro
- Universidade Tecnológica Federal do Paraná, Câmpus Apucarana - Coordenação de Licenciatura em Química (COLIQ), Apucarana, Brazil
| | - Tatiane Larissa da Silva Farias
- Universidade Tecnológica Federal do Paraná, Câmpus Apucarana - Coordenação de Licenciatura em Química (COLIQ), Apucarana, Brazil
| | - Debora Aparecida de Almeida
- Universidade Tecnológica Federal do Paraná, Câmpus Apucarana - Coordenação de Licenciatura em Química (COLIQ), Apucarana, Brazil
| | - Patrícia Salomão Garcia
- Universidade Tecnológica Federal do Paraná, Câmpus Apucarana - Coordenação de Licenciatura em Química (COLIQ), Apucarana, Brazil
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15
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Ottone C, Romero O, Aburto C, Illanes A, Wilson L. Biocatalysis in the winemaking industry: Challenges and opportunities for immobilized enzymes. Compr Rev Food Sci Food Saf 2020; 19:595-621. [PMID: 33325181 DOI: 10.1111/1541-4337.12538] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 12/02/2019] [Accepted: 12/17/2019] [Indexed: 12/18/2022]
Abstract
Enzymes are powerful catalysts already being used in a large number of industrial processes. Impressive advantages in enzyme catalysts improvement have occurred in recent years aiming to improve their performance under harsh operation conditions far away from those of their cellular habitat. Production levels of the winemaking industry have experienced a remarkable increase, and technological innovations have been introduced for increasing the efficiency at different process steps or for improving wine quality, which is a key issue in this industry. Enzymes, such as pectinases and proteases, have been traditionally used, and others, such as glycosidases, have been more recently introduced in the modern wine industry, and many dedicated studies refer to the improvement of enzyme performance under winemaking conditions. Within this framework, a thorough review on the role of enzymes in winemaking is presented, with special emphasis on the use of immobilized enzymes as a significant strategy for catalyst improvement within an industry in which enzymes play important roles that are to be reinforced paralleling innovation.
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Affiliation(s)
- Carminna Ottone
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Oscar Romero
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Carla Aburto
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Andrés Illanes
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Lorena Wilson
- Escuela de Ingeniería Bioquímica, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
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16
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Dias Gomes M, Woodley JM. Considerations when Measuring Biocatalyst Performance. Molecules 2019; 24:E3573. [PMID: 31623317 DOI: 10.3390/molecules24193573] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/27/2019] [Accepted: 09/29/2019] [Indexed: 01/02/2023] Open
Abstract
As biocatalysis matures, it becomes increasingly important to establish methods with which to measure biocatalyst performance. Such measurements are important to assess immobilization strategies, different operating modes, and reactor configurations, aside from comparing protein engineered variants and benchmarking against economic targets. While conventional measurement techniques focus on a single performance metric (such as the total turnover number), here, it is argued that three metrics (achievable product concentration, productivity, and enzyme stability) are required for an accurate assessment of scalability.
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17
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Petri A, Colonna V, Piccolo O. Asymmetric synthesis of a high added value chiral amine using immobilized ω-transaminases. Beilstein J Org Chem 2019; 15:60-66. [PMID: 30680039 PMCID: PMC6334810 DOI: 10.3762/bjoc.15.6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 12/12/2018] [Indexed: 01/28/2023] Open
Abstract
Chiral N-heterocyclic molecules and in particular compounds with an amino functional group such as 3-aminopiperidine are valuable intermediates for the production of a large number of bioactive compounds with pharmacological properties. In this paper, the synthesis of both enantiomers of 3-amino-1-Boc-piperidine by amination of the prochiral precursor 1-Boc-3-piperidone using immobilized ω-transaminases (TAs-IMB), isopropylamine as amine donor and pyridoxal-5'-phosphate (PLP) as cofactor is described. Compared to other methods, the present approach affords the target compound in just one step with high yield and high enantiomeric excess starting from a commercial substrate. The reaction was carried out by using different commercially available immobilized enzymes, evaluating the catalytic activity and the enantioselectivity under different experimental conditions. Re-use of the most efficient enzyme was performed both in batch and in a semi-continuous system. The selected biocatalyst showed good stability under the reaction conditions providing consistent results in terms of conversion and enantiomeric excess after several cycles. The reported results may be of practical interest in view of the development of this sustainable approach to an industrial scale.
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Affiliation(s)
- Antonella Petri
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Valeria Colonna
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi 13, 56124 Pisa, Italy
| | - Oreste Piccolo
- Studio di Consulenza Scientifica (SCSOP), Via Bornò 5, 23896 Sirtori (LC), Italy
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18
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Grant J, Modica JA, Roll J, Perkovich P, Mrksich M. An Immobilized Enzyme Reactor for Spatiotemporal Control over Reaction Products. Small 2018; 14:e1800923. [PMID: 29971942 DOI: 10.1002/smll.201800923] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/07/2018] [Indexed: 05/19/2023]
Abstract
This paper describes a microfluidic chip wherein the position and order of two immobilized enzymes affects the type and quantity of reaction products in the flowing fluid. Assembly of the chip is based on a self-assembled monolayer presenting two orthogonal covalent capture ligands that immobilize their respective fusion enzyme. A thiol-tagged substrate is flowed over a region presenting the first enzyme-which generates a product that is efficiently transferred to the second enzyme-and the second enzyme's product binds to an adjacent thiol capture site on the chip. The amount of the three possible reaction products is quantified directly on the chip using self-assembled monolayers for matrix-assisted laser desorption/ionization mass spectrometry, revealing that the same microsystem can be spatiotemporally arranged to produce different products depending on the device design. This work allows for optimizing multistep biochemical transformations in favor of a desired product using a facile reaction and analytical format.
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Affiliation(s)
- Jennifer Grant
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| | - Justin A Modica
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Juliet Roll
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Paul Perkovich
- Department of Chemical & Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Milan Mrksich
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA
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19
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Cao H, Yang Y, Qi Y, Li Y, Sun B, Li Y, Cui W, Li J, Li J. Intraparticle FRET for Enhanced Efficiency of Two-Photon Activated Photodynamic Therapy. Adv Healthc Mater 2018; 7:e1701357. [PMID: 29688635 DOI: 10.1002/adhm.201701357] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 03/23/2018] [Indexed: 11/08/2022]
Abstract
Photodynamic therapy (PDT) still faces two main problems on cancer therapy. One is how to improve PDT efficiency against hypoxic environment of tumors. The other one is how to overcome the limit of short wavelength light to increase PDT treatment depth. In this work, an intraparticle fluorescence resonance energy transfer (FRET) platform is designed to address these problems together. The nanoparticles are doped with multicomponents, such as catalase, two-photon dyes, and traditional photosensitizers, with a simple "one-pot" and green method. On the one hand, catalase can catalyze intracellular H2 O2 into O2 and promote PDT efficiency. One the other hand, photosensitizers can be excited indirectly by two-photon lasers through an intraparticle FRET mechanism, which results in deeper tissue penetration for PDT. These properties are verified through the material induced cytotoxicity in light or in dark and in vivo blocking blood-vessel experiment.
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Affiliation(s)
- Hongqian Cao
- School of Public Health; Jilin University; Changchun 130021 China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 China
| | - Yang Yang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 China
| | - Yanfei Qi
- School of Public Health; Jilin University; Changchun 130021 China
| | - Yue Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 China
| | - Bingbing Sun
- CAS Key Laboratory of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
| | - Ying Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety; National Center for Nanoscience and Technology; Beijing 100190 China
| | - Wei Cui
- CAS Key Laboratory of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
| | - Juan Li
- School of Public Health; Jilin University; Changchun 130021 China
| | - Junbai Li
- CAS Key Laboratory of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
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20
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Liu B, Yan C, Si W, Sun X, Lu X, Ansorge-Schumacher M, Schmidt OG. Ultralong-Discharge-Time Biobattery Based on Immobilized Enzymes in Bilayer Rolled-Up Enzymatic Nanomembranes. Small 2018; 14:e1704221. [PMID: 29424056 DOI: 10.1002/smll.201704221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 01/01/2018] [Indexed: 06/08/2023]
Abstract
Glucose biofuel cells (GBFCs) are highly promising power sources for implantable biomedical and consumer electronics because they provide a high energy density and safety. However, it remains a great challenge to combine their high power density with reliable long-term stability. In this study, a novel GBFC design based on the enzyme biocatalysts glucose dehydrogenase, diaphorase, and bilirubin oxidase immobilized in rolled-up titanium nanomembranes is reported. The setup delivers a maximum areal power density of ≈3.7 mW cm-2 and a stable power output of ≈0.8 mW cm-2 . The power discharges over 452 h, which is considerably longer than reported previously. These results demonstrate that the GBFC design is in principle a feasible and effective approach to solve the long-term discharge challenge for implantable biomedical device applications.
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Affiliation(s)
- Bo Liu
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| | - Chenglin Yan
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
- Soochow Institute for Energy and Materials InnovationS, College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215006, China
| | - Wenping Si
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| | - Xiaolei Sun
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| | - Xueyi Lu
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
| | | | - Oliver G Schmidt
- Institute for Integrative Nanosciences, IFW Dresden, Helmholtzstr. 20, 01069, Dresden, Germany
- Material Systems for Nanoelectronics, Chemnitz University of Technology, Reichenhainer Str. 70, 09107, Chemnitz, Germany
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21
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Sheldon RA. Engineering a more sustainable world through catalysis and green chemistry. J R Soc Interface 2016; 13:rsif.2016.0087. [PMID: 27009181 DOI: 10.1098/rsif.2016.0087] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 03/02/2016] [Indexed: 11/12/2022] Open
Abstract
The grand challenge facing the chemical and allied industries in the twenty-first century is the transition to greener, more sustainable manufacturing processes that efficiently use raw materials, eliminate waste and avoid the use of toxic and hazardous materials. It requires a paradigm shift from traditional concepts of process efficiency, focusing on chemical yield, to one that assigns economic value to replacing fossil resources with renewable raw materials, eliminating waste and avoiding the use of toxic and/or hazardous substances. The need for a greening of chemicals manufacture is readily apparent from a consideration of the amounts of waste generated per kilogram of product (the E factors) in various segments of the chemical industry. A primary source of this waste is the use of antiquated 'stoichiometric' technologies and a major challenge is to develop green, catalytic alternatives. Another grand challenge for the twenty-first century, driven by the pressing need for climate change mitigation, is the transition from an unsustainable economy based on fossil resources--oil, coal and natural gas--to a sustainable one based on renewable biomass. In this context, the valorization of waste biomass, which is currently incinerated or goes to landfill, is particularly attractive. The bio-based economy involves cross-disciplinary research at the interface of biotechnology and chemical engineering, focusing on the development of green, chemo- and biocatalytic technologies for waste biomass conversion to biofuels, chemicals and bio-based materials. Biocatalysis has many benefits to offer in this respect. The catalyst is derived from renewable biomass and is biodegradable. Processes are performed under mild conditions and generally produce less waste and are more energy efficient than conventional ones. Thanks to modern advances in biotechnology 'tailor-made' enzymes can be economically produced on a large scale. However, for economic viability it is generally necessary to recover and re-use the enzyme and this can be achieved by immobilization, e.g. as solid cross-linked enzyme aggregates (CLEAs), enabling separation by filtration or centrifugation. A recent advance is the use of 'smart', magnetic CLEAs, which can be separated magnetically from reaction mixtures containing suspensions of solids; truly an example of cross-disciplinary research at the interface of physical and life sciences, which is particularly relevant to biomass conversion processes.
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Affiliation(s)
- Roger A Sheldon
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, P O Wits 2050, Johannesburg, South Africa Department of Biotechnology, Delft University of Technology, Julianalaan 136, Delft 2628BL, The Netherlands
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22
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Abstract
The sediment phase of the Venice lagoon within an area of shallow water, the Palude della Rosa, was studied and three insoluble enzymatic activities (cellulase, phosphatase and urease) were found to be linked to the inorganic phase. These immobilized enzymes were more resistant to environmental changes, even extreme ones, compared to their soluble counterparts. The evolution of their activity with pH, temperature and seasonal variation was investigated. While pH related activities showed the usual behaviour, the resistance to temperature was extremely high and seasonal variation was dependent on immobilization. These enzymatic activities could be used as a diagnostic factor for the ecosystem, since their presence is related to the nature of the waste products.
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Affiliation(s)
- N Sabil
- a NSERM , U 58, 60 rue des Navacelles , 34090 , Montpellier , France
| | - D Tagliapietra
- b Dipartimento Scienze Ambientali , Università di Venezia , Venezia , Italy
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