1
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Waly DA, Zeid AHA, Attia HN, Ahmed KA, El-Kashoury ESA, El Halawany AM, Mohammed RS. Comprehensive phytochemical characterization of Persea americana Mill. fruit via UPLC/HR-ESI-MS/MS and anti-arthritic evaluation using adjuvant-induced arthritis model. Inflammopharmacology 2023; 31:3243-3262. [PMID: 37936023 PMCID: PMC10692038 DOI: 10.1007/s10787-023-01365-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/06/2023] [Indexed: 11/09/2023]
Abstract
Persea americana Mill. (avocado fruit) has many health benefits when added to our diet due to various pharmacological activities, such as preventing bone loss and inflammation, modulating immune response and acting as an antioxidant. In the current study, the total ethanol extract (TEE) of the fruit was investigated for in vitro antioxidant and anti-inflammatory activity via DPPH and cyclooxygenase enzyme inhibition. Biological evaluation of the antiarthritic effect of the fruit extract was further investigated in vivo using Complete Freund's Adjuvant (CFA) arthritis model, where the average percentages of body weight change, inhibition of paw edema, basal paw diameter/weight and spleen index were estimated for all animal groups. Inflammatory mediators such as serum IL-6 and TNF-α were also determined, in addition to histopathological examination of the dissected limbs isolated from all experimental animals. Eighty-one metabolites belonging to different chemical classes were detected in the TEE of P. americana fruit via UPLC/HR-ESI-MS/MS. Two classes of lyso-glycerophospholipids; lyso-glycerophosphoethanolamines and lysoglycerophosphocholines were detected for the first time in avocado fruit in the positive mode. The TEE of fruit exhibited significant antioxidant and anti-inflammatory activity in vitro. In vivo anti-arthritic activity of the fruit TEE improved paw parameters, inflammatory mediators and spleen index. Histopathological findings showed marked improvements in the arthritic condition of the excised limbs. Therefore, avocado fruit could be proposed to be a powerful antioxidant and antiarthritic natural product.
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Affiliation(s)
- Dina Atef Waly
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
| | - Aisha Hussein Abou Zeid
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt
| | - Hanan Naeim Attia
- Medicinal and Pharmaceutical Chemistry Department (Pharmacology Group), National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt
| | - Kawkab A Ahmed
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, P.O. 12211, Giza, Egypt
| | | | - Ali Mahmoud El Halawany
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr-El Ainy Street, Cairo, 11562, Egypt
| | - Reda Sayed Mohammed
- Department of Pharmacognosy, National Research Centre (ID: 60014618), 33-Elbohouth St (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
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2
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Cirlini M, Righetti L, Del Vecchio L, Tonni E, Lucini L, Dall’Asta C, Galaverna G. Untargeted Metabolomics of Meat Digests: Its Potential to Differentiate Pork Depending on the Feeding Regimen. Molecules 2023; 28:7306. [PMID: 37959726 PMCID: PMC10650005 DOI: 10.3390/molecules28217306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Meat quality seems to be influenced by the dietary regimes applied for animal feeding. Several research studies are aimed at improving meat quality, preserving it from oxidative processes, by the incorporation of antioxidant components in animal feeding. The main part of these studies evaluates meat quality, determining different parameters directly on meat, while few research studies take into account what may happen after meat ingestion. To address this topic, in this study, an in vitro gastrointestinal digestion protocol was applied to two different pork muscles, longissimus dorsi and rectus femoris, obtained from pigs fed with different diets. In detail, two groups of 12 animals each were subjected to either a conventional diet or a supplemented diet with extruded linseeds as a source of omega-3 fatty acids and plant extracts as a source of phenolics antioxidant compounds. The digested meat was subjected to an untargeted metabolomics approach. Several metabolites deriving from lipid and protein digestion were detected. Our untargeted approach allowed for discriminating the two different meat cuts, based on their metabolomic profiles. Nonetheless, multivariate statistics allowed clearly discriminating between samples obtained from different animal diets. In particular, the inclusion of linseeds and polyphenols in the animal diet led to a decrease in metabolites generated from oxidative degradation reactions, in comparison to the conventional diet group. In the latter, fatty acyls, fatty aldehydes and oxylipins, as well as cholesterol and vitamin D3 precursors and derivatives, could be highlighted.
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Affiliation(s)
- Martina Cirlini
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy; (L.R.); (L.D.V.); (E.T.); (C.D.); (G.G.)
| | - Laura Righetti
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy; (L.R.); (L.D.V.); (E.T.); (C.D.); (G.G.)
- Laboratory of Organic Chemistry, Wageningen University, 6708 WE Wageningen, The Netherlands
- Wageningen Food Safety Research, Wageningen University & Research, 6700 AE Wageningen, The Netherlands
| | - Lorenzo Del Vecchio
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy; (L.R.); (L.D.V.); (E.T.); (C.D.); (G.G.)
| | - Elena Tonni
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy; (L.R.); (L.D.V.); (E.T.); (C.D.); (G.G.)
| | - Luigi Lucini
- Department for Sustainable Food Process, University Cattolica del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy;
| | - Chiara Dall’Asta
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy; (L.R.); (L.D.V.); (E.T.); (C.D.); (G.G.)
| | - Gianni Galaverna
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy; (L.R.); (L.D.V.); (E.T.); (C.D.); (G.G.)
- Interdepartmental Center for Safety, Technologies and Innovation in Agrifood (SITEIA.PARMA), University of Parma, Parco Area delle Scienze, Padiglione 33, 43124 Parma, Italy
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3
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Ming H, Yuan B, Qu G, Sun Z. Engineering the activity of amine dehydrogenase in the asymmetric reductive amination of hydroxyl ketones. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00391k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An engineered AmDH derived from a leucine dehydrogenase was used as the starting enzyme to improve its activity in the synthesis of (R)-3-amino-1-butanol. Preparative-scale synthesis of the (R)-product (90% yield, >99%) was performed on a gram-scale.
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Affiliation(s)
- Hui Ming
- Department of Life Sciences and Medicine, University of Science and technology of China, Hefei 230022, China
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
| | - Bo Yuan
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
| | - Ge Qu
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
| | - Zhoutong Sun
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China
- National Technology Innovation Center of Synthetic Biology, Tianjin 300308, China
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4
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Carter EM, Subrizi F, Ward JM, Sheppard TD, Hailes HC. Direct Conversion of Hydrazones to Amines using Transaminases. ChemCatChem 2021; 13:4520-4523. [PMID: 35874927 PMCID: PMC9292518 DOI: 10.1002/cctc.202101008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/31/2021] [Indexed: 11/09/2022]
Abstract
Transaminase enzymes (TAms) have been widely used for the amination of aldehydes and ketones, often resulting in optically pure products. In this work, transaminases were directly reacted with hydrazones in a novel approach to form amine products. Several substrates were investigated, including those with furan and phenyl moieties. It was determined that the amine yields increased when an additional electrophile was added to the reaction mixture, suggesting that they can sequester the hydrazine released in the reaction. Pyridoxal 5'-phosphate (PLP), a cofactor for transaminases, and polyethylene glycol (PEG)-aldehydes were both found to increase the yield of amine formed. Notably, the amination of (S)-(-)-1-amino-2-(methoxymethyl)pyrrolidine (SAMP) hydrazones gave promising results as a method to form chiral β-substituted amines in good yield.
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Affiliation(s)
- Eve M Carter
- Department of Chemistry University College London 20 Gordon Street London WC1H 0AJ UK
| | - Fabiana Subrizi
- Department of Chemistry University College London 20 Gordon Street London WC1H 0AJ UK
| | - John M Ward
- Department of Biochemical Engineering University College London Gower Street, Bernard Katz Building London WC1E 6BT UK
| | - Tom D Sheppard
- Department of Chemistry University College London 20 Gordon Street London WC1H 0AJ UK
| | - Helen C Hailes
- Department of Chemistry University College London 20 Gordon Street London WC1H 0AJ UK
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5
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Li F, Liang Y, Wei Y, Zheng Y, Du Y, Yu H. Biochemical and Structural Characterization of an (
R
)‐Selective Transaminase in the Asymmetric Synthesis of Chiral Hydroxy Amines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fulong Li
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Youxiang Liang
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Yuwen Wei
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Yukun Zheng
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Yan Du
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
| | - Huimin Yu
- Department of Chemical Engineering Tsinghua University Beijing 100084 People's Republic of China
- Key Laboratory of Industrial Biocatalysis the Ministry of Education Tsinghua University Beijing 100084 People's Republic of China
- Center for Synthetic and Systems Biology Tsinghua University Beijing 100084 People's Republic of China
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6
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Fimbristylis ovata extract and its ability to encounter AGEs-induced neurotoxicity in SH-SY5Y. Toxicol Res 2021; 37:355-367. [PMID: 34295799 DOI: 10.1007/s43188-020-00072-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 09/28/2020] [Accepted: 11/04/2020] [Indexed: 10/22/2022] Open
Abstract
Abstract Advanced glycation end products (AGEs) upon binding to its receptor (receptor for AGEs, RAGE) trigger several pathological processes involving oxidative stress and inflammatory pathway which play a pivotal role in various degenerative diseases including Alzheimer's disease. Fimbristylis ovata (F. ovata) has long been reported to be used as a traditional herbal medicine; nonetheless, very few studies have been reported. In this study, the protective effects of F. ovata extract on neurotoxicity of hippocampal neuronal cells (SH-SY5Y) was investigated. When compared to normal control, AGEs treatment significantly induced oxidative stress level and enhanced NF-κB translocation to nucleus in the neuronal cells (p < 0.05). The increase in NF-κB translocation leads to increase in transcription level of the target genes including RAGE and pro-inflammatory cytokines which include interleukin 1 beta (IL1B), tumor necrosis factor-alpha (TNFA) and interleukin 6 (IL6). Pre-treatment of SH-SY5Y with the extracts of F. ovata shows favorable results by significantly suppressing oxidative stress level (p < 0.05) as well transcriptional level of RAGE (p < 0.05) and pro-inflammatory cytokines (p < 0.05). Chemical analysis of F. ovata extracts using High Resolution Liquid Chromatograph Mass Spectrometer (HR-LCMS) and Gas Chromatograph with high resolution Mass Spectrometer (GC-HRMS) suggested some potential active phytochemical compounds. The results from this study may provide possible alternative treatment for prevention and/or therapy of neurodegenerative disorders by targeting the above-mentioned pathways. The role of the phytochemical active ingredient (s) in inhibiting the AGEs-triggered signaling inflammatory pathway should be investigated in future study. Graphic abstract
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7
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Slagman S, Fessner WD. Biocatalytic routes to anti-viral agents and their synthetic intermediates. Chem Soc Rev 2021; 50:1968-2009. [DOI: 10.1039/d0cs00763c] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An assessment of biocatalytic strategies for the synthesis of anti-viral agents, offering guidelines for the development of sustainable production methods for a future COVID-19 remedy.
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Affiliation(s)
- Sjoerd Slagman
- Institut für Organische Chemie und Biochemie
- Technische Universität Darmstadt
- Germany
| | - Wolf-Dieter Fessner
- Institut für Organische Chemie und Biochemie
- Technische Universität Darmstadt
- Germany
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8
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Lakó Á, Molnár Z, Mendonça R, Poppe L. Transaminase-mediated synthesis of enantiopure drug-like 1-(3',4'-disubstituted phenyl)propan-2-amines. RSC Adv 2020; 10:40894-40903. [PMID: 35519186 PMCID: PMC9057730 DOI: 10.1039/d0ra08134e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 10/29/2020] [Indexed: 12/16/2022] Open
Abstract
Transaminases (TAs) offer an environmentally and economically attractive method for the direct synthesis of pharmaceutically relevant disubstituted 1-phenylpropan-2-amine derivatives starting from prochiral ketones. In this work, we report the application of immobilised whole-cell biocatalysts with (R)-transaminase activity for the synthesis of novel disubstituted 1-phenylpropan-2-amines. After optimisation of the asymmetric synthesis, the (R)-enantiomers could be produced with 88-89% conversion and >99% ee, while the (S)-enantiomers could be selectively obtained as the unreacted fraction of the corresponding racemic amines in kinetic resolution with >48% conversion and >95% ee.
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Affiliation(s)
- Ágnes Lakó
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics Műegyetem rkp. 3 1111 Budapest Hungary +36-1-463-3299
- Hovione Farmaciência, S.A., Campus do Lumiar Edifício R, Estrada do Paço do Lumiar 1649-038 Lisboa Portugal
| | - Zsófia Molnár
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics Műegyetem rkp. 3 1111 Budapest Hungary +36-1-463-3299
| | - Ricardo Mendonça
- Hovione Farmaciência, S.A., Campus do Lumiar Edifício R, Estrada do Paço do Lumiar 1649-038 Lisboa Portugal
| | - László Poppe
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics Műegyetem rkp. 3 1111 Budapest Hungary +36-1-463-3299
- Biocatalysis and Biotransformation Research Center, Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University of Cluj-Napoca Arany János Str. 11 400028 Cluj-Napoca Romania
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9
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Improving the catalytic thermostability of Bacillus altitudinis W3 ω-transaminase by proline substitutions. 3 Biotech 2020; 10:323. [PMID: 32656056 DOI: 10.1007/s13205-020-02321-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/24/2020] [Indexed: 01/10/2023] Open
Abstract
As a green biocatalyst, transaminase with high thermostability can be better employed to synthesize many pharmaceutical intermediates in industry. To improve the thermostability of (R)-selective amine transaminase from Bacillus altitudinis W3, related mutation sites were determined by multiple amino acid sequence alignment between wild-type ω-transaminase and four potential thermophilic ω-transaminases, followed by replacement of the related amino acid residues with proline by site-directed mutagenesis. Three stabilized mutants (D192P, T237P, and D192P/T237P) showing the highest stability were obtained and used for further analysis. Comparison with the wild-type enzyme revealed that the double mutant D192P/T237P exhibited the largest shift in thermostability, with a 2.5-fold improvement of t 1/2 at 40 °C, and a 6.3 °C increase in T 50 15, and a 5 °C higher optimal catalytic temperature. Additionally, this mutant exhibited an increase in catalytic efficiency (k cat/K m) relative to the wild-type enzyme. Modeling analysis indicated that the improved thermostability of the mutants could be associated with newly formed hydrophobic interactions and hydrogen bonds. This study shown that proline substitutions guided by sequence alignment to improve the thermostability of (R)-selective amine transaminase was effective and this method can also be used to engineering other enzymes.
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10
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Böhmer W, Koenekoop L, Simon T, Mutti FG. Parallel Interconnected Kinetic Asymmetric Transformation (PIKAT) with an Immobilized ω-Transaminase in Neat Organic Solvent. Molecules 2020; 25:E2140. [PMID: 32375267 PMCID: PMC7248775 DOI: 10.3390/molecules25092140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/27/2020] [Accepted: 04/30/2020] [Indexed: 01/27/2023] Open
Abstract
Comprising approximately 40% of the commercially available optically active drugs, α-chiral amines are pivotal for pharmaceutical manufacture. In this context, the enzymatic asymmetric amination of ketones represents a more sustainable alternative than traditional chemical procedures for chiral amine synthesis. Notable advantages are higher atom-economy and selectivity, shorter synthesis routes, milder reaction conditions and the elimination of toxic catalysts. A parallel interconnected kinetic asymmetric transformation (PIKAT) is a cascade in which one or two enzymes use the same cofactor to convert two reagents into more useful products. Herein, we describe a PIKAT catalyzed by an immobilized ω-transaminase (ωTA) in neat toluene, which concurrently combines an asymmetric transamination of a ketone with an anti-parallel kinetic resolution of an amine racemate. The applicability of the PIKAT was tested on a set of prochiral ketones and racemic α-chiral amines in a 1:2 molar ratio, which yielded elevated conversions (up to >99%) and enantiomeric excess (ee, up to >99%) for the desired products. The progress of the conversion and ee was also monitored in a selected case. This is the first report of a PIKAT using an immobilized ωTA in a non-aqueous environment.
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Affiliation(s)
| | | | | | - Francesco G. Mutti
- Van ‘t Hoff Institute for Molecular Sciences, HIMS Biocat, University of Amsterdam, 1098 XH Amsterdam, The Netherlands; (W.B.); (L.K.); (T.S.)
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11
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Böhmer W, Volkov A, Engelmark Cassimjee K, Mutti FG. Continuous Flow Bioamination of Ketones in Organic Solvents at Controlled Water Activity using Immobilized ω-Transaminases. Adv Synth Catal 2020; 362:1858-1867. [PMID: 32421034 PMCID: PMC7217232 DOI: 10.1002/adsc.201901274] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/21/2020] [Indexed: 11/12/2022]
Abstract
Compared with biocatalysis in aqueous media, the use of enzymes in neat organic solvents enables increased solubility of hydrophobic substrates and can lead to more favorable thermodynamic equilibria, avoidance of possible hydrolytic side reactions and easier product recovery. ω-Transaminases from Arthrobacter sp. (AsR-ωTA) and Chromobacterium violaceum (Cv-ωTA) were immobilized on controlled porosity glass metal-ion affinity beads (EziG) and applied in neat organic solvents for the amination of 1-phenoxypropan-2-one with 2-propylamine. The reaction system was investigated in terms of type of carrier material, organic solvents and reaction temperature. Optimal conditions were found with more hydrophobic carrier materials and toluene as reaction solvent. The system's water activity (aw) was controlled via salt hydrate pairs during both the biocatalyst immobilization step and the progress of the reaction in different non-polar solvents. Notably, the two immobilized ωTAs displayed different optimal values of aw, namely 0.7 for EziG3-AsR-ωTA and 0.2 for EziG3-Cv-ωTA. In general, high catalytic activity was observed in various organic solvents even when a high substrate concentration (450-550 mM) and only one equivalent of 2-propylamine were applied. Under batch conditions, a chemical turnover (TTN) above 13000 was obtained over four subsequent reaction cycles with the same batch of EziG-immobilized ωTA. Finally, the applicability of the immobilized biocatalyst in neat organic solvents was further demonstrated in a continuous flow packed-bed reactor. The flow reactor showed excellent performance without observable loss of enzymatic catalytic activity over several days of operation. In general, ca. 70% conversion was obtained in 72 hours using a 1.82 mL flow reactor and toluene as flow solvent, thus affording a space-time yield of 1.99 g L-1 h-1. Conversion reached above 90% when the reaction was run up to 120 hours.
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Affiliation(s)
- Wesley Böhmer
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | | | | | - Francesco G. Mutti
- Van't Hoff Institute for Molecular Sciences, HIMS-BiocatUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
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12
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Fiorati A, Berglund P, Humble MS, Tessaro D. Application of Transaminases in a Disperse System for the Bioamination of Hydrophobic Substrates. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901434] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Andrea Fiorati
- Politecnico di MilanoDepartment of Chemistry, Materials and Chemical Engineering “G. Natta” p.za L. da Vinci 32 I-20133 Milano Italy
| | - Per Berglund
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Department of Industrial BiotechnologyAlbaNova University Center SE-10691 Stockholm Sweden
| | - Maria S. Humble
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Department of Industrial BiotechnologyAlbaNova University Center SE-10691 Stockholm Sweden
- Pharem Biotech AB, Biovation Park Forskargatan 20 J SE-15136 Södertälje Sweden
| | - Davide Tessaro
- Politecnico di MilanoDepartment of Chemistry, Materials and Chemical Engineering “G. Natta” p.za L. da Vinci 32 I-20133 Milano Italy
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13
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Chen FF, Cosgrove SC, Birmingham WR, Mangas-Sanchez J, Citoler J, Thompson MP, Zheng GW, Xu JH, Turner NJ. Enantioselective Synthesis of Chiral Vicinal Amino Alcohols Using Amine Dehydrogenases. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03889] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Fei-Fei Chen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P.R. China
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K
| | - Sebastian C. Cosgrove
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K
| | - William R. Birmingham
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K
| | - Juan Mangas-Sanchez
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K
| | - Joan Citoler
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K
| | - Matthew P. Thompson
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K
| | - Gao-Wei Zheng
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P.R. China
| | - Jian-He Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P.R. China
| | - Nicholas J. Turner
- School of Chemistry, University of Manchester, Manchester Institute of Biotechnology, 131 Princess Street, Manchester M1 7DN, U.K
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14
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Comparison of aminotransferases of three Bacillus strains Bacillus altitudinis W3, Bacillus velezensis SYBC H47, and Bacillus amyloliquefaciens YP6 via genome analysis and bioinformatics. J Appl Genet 2019; 60:427-430. [PMID: 31407219 DOI: 10.1007/s13353-019-00512-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 07/23/2019] [Accepted: 08/05/2019] [Indexed: 12/11/2022]
Abstract
Aminotransferases have attracted considerable attention due to their extraordinary potential for the biosynthesis of chiral amines. Research on transaminase genes can facilitate their application to various fields. Herein, 89 putative aminotransferase genes potentially encoding useful biocatalysts were identified in three Bacillus strains genomes by genome annotation. Enzymes encoded by genes ota3, ota8, otae6, otae21, otaf1, otaf8, and otaf26 belong to pyridoxine 5'-phosphate-dependent enzyme class IV. These seven ω-aminotransferase genes are highly conserved according to phylogenetic tree and bioinformatics analyses, as are the putative lysine catalytic residues in the corresponding enzymes (ω-BPTA 1-7). The enzymes may possess similar activity to ω-aminotransferases from Arthrobacter sp. KNK 168. The potential application of these novel enzymes for the synthesis of medicinal amino compounds will be explored in future genetic engineering studies.
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15
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Immobilized Whole-Cell Transaminase Biocatalysts for Continuous-Flow Kinetic Resolution of Amines. Catalysts 2019. [DOI: 10.3390/catal9050438] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Immobilization of transaminases creates promising biocatalysts for production of chiral amines in batch or continuous-flow mode reactions. E. coli cells containing overexpressed transaminases of various selectivities and hollow silica microspheres as supporting agent were immobilized by an improved sol-gel process to produce immobilized transaminase biocatalysts with suitable stability and mechanical properties for continuous-flow applications. The immobilized cell-based transaminase biocatalyst proved to be durable and easy-to-use in kinetic resolution of four racemic amines 1a–d. The batch and continuous-flow mode kinetic resolutions with transaminase biocatalyst of opposite stereopreference provided access to both enantiomers of the corresponding amines. By using the most suitable immobilized transaminase biocatalysts, this study describes the first transaminase-based approach for the production of both pure enantiomers of 1-(3,4-dimethoxyphenyl)ethan-1-amine 1d.
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Zhang JD, Zhao JW, Gao LL, Chang HH, Wei WL, Xu JH. Enantioselective synthesis of enantiopure β-amino alcohols via kinetic resolution and asymmetric reductive amination by a robust transaminase from Mycobacterium vanbaalenii. J Biotechnol 2019; 290:24-32. [DOI: 10.1016/j.jbiotec.2018.12.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 11/20/2018] [Accepted: 12/07/2018] [Indexed: 02/06/2023]
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Asymmetric synthesis of chiral amine in organic solvent and in-situ product recovery for process intensification: A case study. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2016.11.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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18
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Liang YR, Wu Q, Lin XF. Effect of Additives on the Selectivity and Reactivity of Enzymes. CHEM REC 2016; 17:90-121. [PMID: 27490244 DOI: 10.1002/tcr.201600016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Indexed: 01/05/2023]
Abstract
Enzymes have been widely used as efficient, eco-friendly, and biodegradable catalysts in organic chemistry due to their mild reaction conditions and high selectivity and efficiency. In recent years, the catalytic promiscuity of many enzymes in unnatural reactions has been revealed and studied by chemists and biochemists, which has expanded the application potential of enzymes. To enhance the selectivity and activity of enzymes in their natural or promiscuous reactions, many methods have been recommended, such as protein engineering, process engineering, and media engineering. Among them, the additive approach is very attractive because of its simplicity to use and high efficiency. In this paper, we will review the recent developments about the applications of additives to improve the catalytic performances of enzymes in their natural and promiscuous reactions. These additives include water, organic bases, water mimics, cosolvents, crown ethers, salts, surfactants, and some particular molecular additives.
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Affiliation(s)
- Yi-Ru Liang
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Qi Wu
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Xian-Fu Lin
- Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
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Börner T, Grey C, Adlercreutz P. Generic HPLC platform for automated enzyme reaction monitoring: Advancing the assay toolbox for transaminases and other PLP-dependent enzymes. Biotechnol J 2016; 11:1025-36. [PMID: 27168488 DOI: 10.1002/biot.201500587] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 02/23/2016] [Accepted: 04/29/2016] [Indexed: 02/04/2023]
Abstract
Methods for rapid and direct quantification of enzyme kinetics independent of the substrate stand in high demand for both fundamental research and bioprocess development. This study addresses the need for a generic method by developing an automated, standardizable HPLC platform monitoring reaction progress in near real-time. The method was applied to amine transaminase (ATA) catalyzed reactions intensifying process development for chiral amine synthesis. Autosampler-assisted pipetting facilitates integrated mixing and sampling under controlled temperature. Crude enzyme formulations in high and low substrate concentrations can be employed. Sequential, small (1 µL) sample injections and immediate detection after separation permits fast reaction monitoring with excellent sensitivity, accuracy and reproducibility. Due to its modular design, different chromatographic techniques, e.g. reverse phase and size exclusion chromatography (SEC) can be employed. A novel assay for pyridoxal 5'-phosphate-dependent enzymes is presented using SEC for direct monitoring of enzyme-bound and free reaction intermediates. Time-resolved changes of the different cofactor states, e.g. pyridoxal 5'-phosphate, pyridoxamine 5'-phosphate and the internal aldimine were traced in both half reactions. The combination of the automated HPLC platform with SEC offers a method for substrate-independent screening, which renders a missing piece in the assay and screening toolbox for ATAs and other PLP-dependent enzymes.
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Affiliation(s)
- Tim Börner
- Division of Biotechnology, Department of Chemistry, Lund University, Lund, Sweden.
| | - Carl Grey
- Division of Biotechnology, Department of Chemistry, Lund University, Lund, Sweden
| | - Patrick Adlercreutz
- Division of Biotechnology, Department of Chemistry, Lund University, Lund, Sweden
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Chen S, Land H, Berglund P, Humble MS. Stabilization of an amine transaminase for biocatalysis. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2015.11.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Villegas-Torres MF, Martinez-Torres RJ, Cázares-Körner A, Hailes H, Baganz F, Ward J. Multi-step biocatalytic strategies for chiral amino alcohol synthesis. Enzyme Microb Technol 2015; 81:23-30. [PMID: 26453469 DOI: 10.1016/j.enzmictec.2015.07.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 07/02/2015] [Accepted: 07/06/2015] [Indexed: 10/23/2022]
Abstract
Chiral amino alcohols are structural motifs present in sphingolipids, antibiotics, and antiviral glycosidase inhibitors. Their chemical synthesis presents several challenges in establishing at least two chiral centres. Here a de novo metabolic pathway using a transketolase enzyme coupled with a transaminase enzyme has been assembled. To synthesise this motif one of the strategies to obtain high conversions from the transaminase/transketolase cascade is the use of hydroxypyruvate (HPA) as a two-carbon donor for the transketolase reaction; although commercially available it is relatively expensive limiting application of the pathway on an industrial scale. Alternately, HPA can be synthesised but this introduces a further synthetic step. In this study two different biocatalytic strategies were developed for the synthesis of (2S,3R)-2-amino-1,3,4-butanetriol (ABT) without adding HPA into the reaction. Firstly, a sequential cascade of three enzymatic steps (two transaminases and one transketolase) for the synthesis of ABT from serine, pyruvate and glycolaldehyde as substrates. Secondly, a two-step recycling cascade where serine is used as donor to aminate erythrulose (catalysed by a transketolase) for the simultaneous synthesis of ABT and HPA. In order to test the novel pathways, three new transaminases are described, two ω-transaminases able to accept a broad range of amine acceptors with serine as amine donor; and an α-transaminase, which showed high affinity towards serine (KM: 18mM) using pyruvate as amine acceptor. After implementation of the above enzymes in the biocatalytic pathways proposed in this paper, the two-step recycling pathway was found to be the most promising for its integration with E. coli metabolism. It was more efficient (10-fold higher conversion), more sustainable and cost-effective (use of low cost natural substrates and only two enzymes), and the reaction could be performed in a one-pot system.
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Affiliation(s)
- Maria F Villegas-Torres
- The Advanced Centre for Biochemical Engineering, University College London, Department of Biochemical Engineering, Gordon Street, London WC1H 0AH, United Kingdom.
| | - R Julio Martinez-Torres
- Research Department of Structural and Molecular Biology, ISMB, The Darwin Building, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Armando Cázares-Körner
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Helen Hailes
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom.
| | - Frank Baganz
- The Advanced Centre for Biochemical Engineering, University College London, Department of Biochemical Engineering, Gordon Street, London WC1H 0AH, United Kingdom
| | - John Ward
- The Advanced Centre for Biochemical Engineering, University College London, Department of Biochemical Engineering, Gordon Street, London WC1H 0AH, United Kingdom.
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Börner T, Rehn G, Grey C, Adlercreutz P. A Process Concept for High-Purity Production of Amines by Transaminase-Catalyzed Asymmetric Synthesis: Combining Enzyme Cascade and Membrane-Assisted ISPR. Org Process Res Dev 2015. [DOI: 10.1021/acs.oprd.5b00055] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tim Börner
- Department
of Biotechnology, Lund University, P.O. Box, 221 00 Lund, Sweden
| | - Gustav Rehn
- Department
of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Carl Grey
- Department
of Biotechnology, Lund University, P.O. Box, 221 00 Lund, Sweden
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M. Riyadh S, M. Gomha S, A. Mahmmoud E, M. Elaasser M. Synthesis and Anticancer Activities of Thiazoles, 1,3-Thiazines, and Thiazolidine Using Chitosan-Grafted-Poly(vinylpyridine) as Basic Catalyst. HETEROCYCLES 2015. [DOI: 10.3987/com-15-13210] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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