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Donzella S, Colacicco A, Nespoli L, Contente ML. Mimicking Natural Metabolisms: Cell-Free Flow Preparation of Dopamine. Chembiochem 2022; 23:e202200462. [PMID: 36315165 DOI: 10.1002/cbic.202200462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/27/2022] [Indexed: 11/07/2022]
Abstract
The biosynthesis of dopamine (DA) from L-tyrosine as starting material is an excellent yet challenging strategy. Here we developed a versatile, multi-enzymatic platform for the biocatalytic preparation of DA in a continuous mode with excellent conversion (90 %) and reaction time (45 min). The system exploits the immobilization of a decarboxylase from Bacillus pumilis (Fdc) and a tyrosinase from Agaricus bisporus (Tyr), which were combined to mimic the in-vivo synthesis of DA (both primary and secondary metabolisms) giving rise to an efficient strategy with a considerable reduction of process associated costs and environmental impact. To enhance the system automation, an in-line purification via catch-and-release procedure was added.
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Affiliation(s)
- Silvia Donzella
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria, 2, 20133, Milan, Italy
| | - Agostina Colacicco
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria, 2, 20133, Milan, Italy
| | - Luca Nespoli
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria, 2, 20133, Milan, Italy
| | - Martina L Contente
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, via Celoria, 2, 20133, Milan, Italy
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Das S, Noh J, Cao W, Sun H, Gianneschi NC, Abbott NL. Using Nanoscopic Solvent Defects for the Spatial and Temporal Manipulation of Single Assemblies of Molecules. NANO LETTERS 2022; 22:7506-7514. [PMID: 36094850 DOI: 10.1021/acs.nanolett.2c02454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Here we report the use of defects in ordered solvents to form, manipulate, and characterize individual molecular assemblies of either small-molecule amphiphiles or polymers. The approach exploits nanoscopic control of the structure of nematic solvents (achieved by the introduction of topological defects) to trigger the formation of molecular assemblies and the subsequent manipulation of defects using electric fields. We show that molecular assemblies formed in solvent defects slow defect motion in the presence of an electric field and that time-of-flight measurements correlate with assembly size, suggesting methods for the characterization of single assemblies of molecules. Solvent defects are also used to transport single assemblies of molecules between solvent locations that differ in composition, enabling the assembly and disassembly of molecular "nanocontainers". Overall, our results provide new methods for studying molecular self-assembly at the single-assembly level and new principles for integrated nanoscale chemical systems that use solvent defects to transport and position molecular cargo.
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Affiliation(s)
- Soumik Das
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - JungHyun Noh
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Wei Cao
- Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute and the Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Hao Sun
- Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute and the Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry and Chemical & Biomedical Engineering, University of New Haven, West Haven, Connecticut 06516, United States
| | - Nathan C Gianneschi
- Department of Chemistry, Materials Science & Engineering, Biomedical Engineering, Pharmacology, International Institute for Nanotechnology, Simpson Querrey Institute, Chemistry of Life Processes Institute and the Lurie Cancer Center, Northwestern University, Evanston, Illinois 60208, United States
| | - Nicholas L Abbott
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
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Validation of Easy Fabrication Methods for PDMS-Based Microfluidic (Bio)Reactors. SCI 2022. [DOI: 10.3390/sci4040036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The common method for producing casting molds for the fabrication of polydimethylsiloxane (PDMS) chips is standard photolithography. This technique offers high resolution from hundreds of nanometers to a few micrometers. However, this mold fabrication method is costly, time-consuming, and might require clean room facilities. Additionally, there is a need for non-micromechanics experts, who do not have specialized equipment to easily and quickly prototype chips themselves. Simple, so-called, makerspace technologies are increasingly being explored as alternatives that have potential to enable anyone to fabricate microfluidic structures. We therefore tested simple fabrication methods for a PDMS-based microfluidic device. On the one hand, channels were replicated from capillaries and tape. On the other hand, different mold fabrication methods, namely laser cutting, fused layer 3D printing, stereolithographic 3D printing, and computer numerical control (CNC) milling, were validated in terms of machine accuracy and tightness. Most of these methods are already known, but the incorporation and retention of particles with sizes in the micrometer range have been less investigated. We therefore tested two different types of particles, which are actually common carriers for the immobilization of enzymes, so that the resulting reactor could ultimately be used as a microfluidic bioreactor. Furthermore, CNC milling provide the most reliable casting mold fabrication method. After some optimization steps with regard to manufacturing settings and post-processing polishing, the chips were tested for the retention of two different particle types (spherical and non-spherical particles). In this way, we successfully tested the obtained PDMS-based microfluidic chips for their potential applicability as (bio)reactors with enzyme immobilization carrier beads.
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Kochetkov KA, Bystrova NA, Pavlov PA, Oshchepkov MS, Oshchepkov AS. Microfluidic Asymmetrical Synthesis and Chiral Analysis. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.08.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang H, Bai Y, Zhu N, Xu J. Microfluidic reactor with immobilized enzyme-from construction to applications: A review. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Abstract
Recent years have witnessed a growing interest in the use of biocatalysts in flow reactors. This merging combines the high selectivity and mild operation conditions typical of biocatalysis with enhanced mass transfer and resource efficiency associated to flow chemistry. Additionally, it provides a sound environment to emulate Nature by mimicking metabolic pathways in living cells and to produce goods through the systematic organization of enzymes towards efficient cascade reactions. Moreover, by enabling the combination of enzymes from different hosts, this approach paves the way for novel pathways. The present review aims to present recent developments within the scope of flow chemistry involving multi-enzymatic cascade reactions. The types of reactors used are briefly addressed. Immobilization methodologies and strategies for the application of the immobilized biocatalysts are presented and discussed. Key aspects related to the use of whole cells in flow chemistry are presented. The combination of chemocatalysis and biocatalysis is also addressed and relevant aspects are highlighted. Challenges faced in the transition from microscale to industrial scale are presented and discussed.
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Biocatalysis in Continuous-Flow Microfluidic Reactors. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2021; 179:211-246. [DOI: 10.1007/10_2020_160] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Brás EJS, Chu V, Conde JP, Fernandes P. Recent developments in microreactor technology for biocatalysis applications. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00024a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Through the use of microfluidics technology, one can severely accelerate the development and optimization of biocatalytic processes. In this work, the authors present a comprehensive review of the recent advances in the field.
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Affiliation(s)
- Eduardo J. S. Brás
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN)
- Lisbon
- Portugal
- IBB – Institute for Bioengineering and Biosciences
- Instituto Superior Técnico
| | - Virginia Chu
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN)
- Lisbon
- Portugal
| | - João Pedro Conde
- Instituto de Engenharia de Sistemas e Computadores – Microsistemas e Nanotecnologias (INESC MN)
- Lisbon
- Portugal
- Department of Bioengineering
- Instituto Superior Técnico
| | - Pedro Fernandes
- IBB – Institute for Bioengineering and Biosciences
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisbon
- Portugal
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