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Current advances on the therapeutic potential of pinocembrin: An updated review. Biomed Pharmacother 2023; 157:114032. [PMID: 36481404 DOI: 10.1016/j.biopha.2022.114032] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/16/2022] [Accepted: 11/19/2022] [Indexed: 12/12/2022] Open
Abstract
Pinocembrin (5,7-dihydroxyflavone) is a major flavonoid found in many plants, fungi and hive products, mainly honey and propolis. Several in vitro and preclinical studies revealed numerous pharmacological activities of pinocembrin including antioxidant, anti-inflammatory, antimicrobial, neuroprotective, cardioprotective and anticancer activities. Here, we comprehensively review and critically analyze the studies carried out on pinocembrin. We also discuss its potential mechanisms of action, bioavailability, toxicity, and clinical investigations. The wide therapeutic window of pinocembrin makes it a promising drug candidate for many clinical applications. We recommend some future perspectives to improve its pharmacokinetic and pharmacodynamic properties for better delivery that may also lead to new therapeutic advances.
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Klamrak A, Nabnueangsap J, Nualkaew N. Biotransformation of Benzoate to 2,4,6-Trihydroxybenzophenone by Engineered Escherichia coli. Molecules 2021; 26:molecules26092779. [PMID: 34066831 PMCID: PMC8125937 DOI: 10.3390/molecules26092779] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 05/01/2021] [Accepted: 05/02/2021] [Indexed: 11/16/2022] Open
Abstract
The synthesis of natural products by E. coli is a challenging alternative method of environmentally friendly minimization of hazardous waste. Here, we establish a recombinant E. coli capable of transforming sodium benzoate into 2,4,6-trihydroxybenzophenone (2,4,6-TriHB), the intermediate of benzophenones and xanthones derivatives, based on the coexpression of benzoate-CoA ligase from Rhodopseudomonas palustris (BadA) and benzophenone synthase from Garcinia mangostana (GmBPS). It was found that the engineered E. coli accepted benzoate as the leading substrate for the formation of benzoyl CoA by the function of BadA and subsequently condensed, with the endogenous malonyl CoA by the catalytic function of BPS, into 2,4,6-TriHB. This metabolite was excreted into the culture medium and was detected by the high-resolution LC-ESI-QTOF-MS/MS. The structure was elucidated by in silico tools: Sirius 4.5 combined with CSI FingerID web service. The results suggested the potential of the new artificial pathway in E. coli to successfully catalyze the transformation of sodium benzoate into 2,4,6-TriHB. This system will lead to further syntheses of other benzophenone derivatives via the addition of various genes to catalyze for functional groups.
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Affiliation(s)
- Anuwatchakij Klamrak
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Jaran Nabnueangsap
- Salaya Central Instrument Facility RSPG, Mahidol University, Nakhon Pathom 73170, Thailand;
| | - Natsajee Nualkaew
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand;
- Correspondence:
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Jeandet P, Vannozzi A, Sobarzo-Sánchez E, Uddin MS, Bru R, Martínez-Márquez A, Clément C, Cordelier S, Manayi A, Nabavi SF, Rasekhian M, El-Saber Batiha G, Khan H, Morkunas I, Belwal T, Jiang J, Koffas M, Nabavi SM. Phytostilbenes as agrochemicals: biosynthesis, bioactivity, metabolic engineering and biotechnology. Nat Prod Rep 2021; 38:1282-1329. [PMID: 33351014 DOI: 10.1039/d0np00030b] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Covering: 1976 to 2020. Although constituting a limited chemical family, phytostilbenes represent an emblematic group of molecules among natural compounds. Ever since their discovery as antifungal compounds in plants and their ascribed role in human health and disease, phytostilbenes have never ceased to arouse interest for researchers, leading to a huge development of the literature in this field. Owing to this, the number of references to this class of compounds has reached the tens of thousands. The objective of this article is thus to offer an overview of the different aspects of these compounds through a large bibliography analysis of more than 500 articles. All the aspects regarding phytostilbenes will be covered including their chemistry and biochemistry, regulation of their biosynthesis, biological activities in plants, molecular engineering of stilbene pathways in plants and microbes as well as their biotechnological production by plant cell systems.
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Affiliation(s)
- Philippe Jeandet
- Research Unit "Induced Resistance and Plant Bioprotection", EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, University of Reims Champagne-Ardenne, PO Box 1039, 51687 Reims Cedex 2, France.
| | - Alessandro Vannozzi
- Department of Agronomy, Food, Natural Resources, Animals, and Environment (DAFNAE), University of Padova, 35020 Legnaro, PD, Italy
| | - Eduardo Sobarzo-Sánchez
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain and Instituto de Investigación e Innovación en Salud, Facultad de Ciencias de la Salud, Universidad Central de Chile, Chile
| | - Md Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh and Neuroscience Research Network, Dhaka, Bangladesh
| | - Roque Bru
- Plant Proteomics and Functional Genomics Group, Department of Agrochemistry and Biochemistry, Faculty of Science, University of Alicante, Alicante, Spain
| | - Ascension Martínez-Márquez
- Plant Proteomics and Functional Genomics Group, Department of Agrochemistry and Biochemistry, Faculty of Science, University of Alicante, Alicante, Spain
| | - Christophe Clément
- Research Unit "Induced Resistance and Plant Bioprotection", EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, University of Reims Champagne-Ardenne, PO Box 1039, 51687 Reims Cedex 2, France.
| | - Sylvain Cordelier
- Research Unit "Induced Resistance and Plant Bioprotection", EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, University of Reims Champagne-Ardenne, PO Box 1039, 51687 Reims Cedex 2, France.
| | - Azadeh Manayi
- Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, 1417614411 Tehran, Iran
| | - Seyed Fazel Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran 14359-16471, Iran
| | - Mahsa Rasekhian
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, AlBeheira, Egypt
| | - Haroon Khan
- Department of Pharmacy, Faculty of Chemical and Life Sciences, Abdul Wali Khan University Mardan, 23200, Pakistan
| | - Iwona Morkunas
- Department of Plant Physiology, Poznań University of Life Sciences, Wołyńska 35, 60-637 Poznań, Poland
| | - Tarun Belwal
- Zhejiang University, College of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang Key Laboratory for Agri-Food Processing, Hangzhou 310058, The People's Republic of China
| | - Jingjie Jiang
- Dorothy and Fred Chau '71 Constellation Professor, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Room 4005D, 110 8th Street, Troy, NY 12180, USA
| | - Mattheos Koffas
- Dorothy and Fred Chau '71 Constellation Professor, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Room 4005D, 110 8th Street, Troy, NY 12180, USA
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran 14359-16471, Iran
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4
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Pan L, Yang L, Huang Y, Liang Y, He Q, Yang D. Combinatorial Enzymatic Synthesis of Unnatural Long-Chain β-Branch Pyrones by a Highly Promiscuous Enzyme. ACS OMEGA 2019; 4:21078-21082. [PMID: 31867500 PMCID: PMC6921269 DOI: 10.1021/acsomega.9b02473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
In this study, we described in detail a combinatorial enzymatic synthesis approach to produce a series of unnatural long-chain β-branch pyrones. We attempted to investigate the catalytic potential of a highly promiscuous enzyme type III PKS to catalyze the non-decarboxylative condensation reaction by two molecules of fatty acyl diketide-N-acetylcysteines (diketide-NACs) units. Two non-natural long-chain (C16, C18) fatty acyl diketide-NACs were prepared successfully for testing the ability of non-decarboxylative condensation. In vitro, 12 novel naturally unavailable long-chain β-branch pyrones were generated by one-pot formation and characterized by ultraviolet-visible spectroscopy and high-resolution liquid chromatography-mass spectrometry. Interestingly, enzymatic kinetics result displays that this enzyme exhibits the remarkable compatibility to various non-natural long-chain substrates. These results would be useful to deeply understand the catalytic mechanism of this enzyme and further extend the application of enzymatic synthesis of non-natural products.
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Affiliation(s)
- Lixia Pan
- Guangxi
Key Laboratory of Biorefinery, Guangxi Biomass Industrialization
Engineering Institute, National Engineering Research Center of Non-food
Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology and Guangxi Key Laboratory
of Marine Natural Products and Combinatorial Biosynthesis Chemistry,
Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning 530007, Guangxi, China
| | - Lilan Yang
- Guangxi
Key Laboratory of Biorefinery, Guangxi Biomass Industrialization
Engineering Institute, National Engineering Research Center of Non-food
Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology and Guangxi Key Laboratory
of Marine Natural Products and Combinatorial Biosynthesis Chemistry,
Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning 530007, Guangxi, China
| | - Yanbing Huang
- Guangxi
Key Laboratory of Biorefinery, Guangxi Biomass Industrialization
Engineering Institute, National Engineering Research Center of Non-food
Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology and Guangxi Key Laboratory
of Marine Natural Products and Combinatorial Biosynthesis Chemistry,
Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning 530007, Guangxi, China
| | - Yongyuan Liang
- Guangxi
Key Laboratory of Biorefinery, Guangxi Biomass Industrialization
Engineering Institute, National Engineering Research Center of Non-food
Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology and Guangxi Key Laboratory
of Marine Natural Products and Combinatorial Biosynthesis Chemistry,
Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning 530007, Guangxi, China
| | - Qihuan He
- Guangxi
Key Laboratory of Biorefinery, Guangxi Biomass Industrialization
Engineering Institute, National Engineering Research Center of Non-food
Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology and Guangxi Key Laboratory
of Marine Natural Products and Combinatorial Biosynthesis Chemistry,
Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning 530007, Guangxi, China
| | - Dengfeng Yang
- Guangxi
Key Laboratory of Biorefinery, Guangxi Biomass Industrialization
Engineering Institute, National Engineering Research Center of Non-food
Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology and Guangxi Key Laboratory
of Marine Natural Products and Combinatorial Biosynthesis Chemistry,
Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning 530007, Guangxi, China
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Aschenbrenner J, Marx P, Pietruszka J, Marienhagen J. Microbial Production of Natural and Unnatural Monolignols with
Escherichia coli. Chembiochem 2019; 20:949-954. [DOI: 10.1002/cbic.201800673] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Jennifer Aschenbrenner
- Institute of Bio- and GeosciencesIBG-1: BiotechnologyForschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Patrick Marx
- Institute of Bio- and GeosciencesIBG-1: BiotechnologyForschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Jörg Pietruszka
- Institute of Bio- and GeosciencesIBG-1: BiotechnologyForschungszentrum Jülich GmbH 52425 Jülich Germany
- Institute of Bioorganic ChemistryHeinrich Heine University of Düsseldorf at Forschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Jan Marienhagen
- Institute of Bio- and GeosciencesIBG-1: BiotechnologyForschungszentrum Jülich GmbH 52425 Jülich Germany
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6
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Engineering stilbene metabolic pathways in microbial cells. Biotechnol Adv 2018; 36:2264-2283. [PMID: 30414914 DOI: 10.1016/j.biotechadv.2018.11.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/07/2018] [Accepted: 11/07/2018] [Indexed: 02/06/2023]
Abstract
Numerous in vitro and in vivo studies on biological activities of phytostilbenes have brought to the fore the remarkable properties of these compounds and their derivatives, making them a top storyline in natural product research fields. However, getting stilbenes in sufficient amounts for routine biological activity studies and make them available for pharmaceutical and/or nutraceutical industry applications, is hampered by the difficulty to source them through synthetic chemistry-based pathways or extraction from the native plants. Hence, microbial cell cultures have rapidly became potent workhorse factories for stilbene production. In this review, we present the combined efforts made during the past 15 years to engineer stilbene metabolic pathways in microbial cells, mainly the Saccharomyces cerevisiae baker yeast, the Escherichia coli and the Corynebacterium glutamicum bacteria. Rationalized approaches to the heterologous expression of the partial or the entire stilbene biosynthetic routes are presented to allow the identification and/or bypassing of the major bottlenecks in the endogenous microbial cell metabolism as well as potential regulations of the genes involved in these metabolic pathways. The contributions of bioinformatics to synthetic biology are developed to highlight their tremendous help in predicting which target genes are likely to be up-regulated or deleted for controlling the dynamics of precursor flows in the tailored microbial cells. Further insight is given to the metabolic engineering of microbial cells with "decorating" enzymes, such as methyl and glycosyltransferases or hydroxylases, which can act sequentially on the stilbene core structure. Altogether, the cellular optimization of stilbene biosynthetic pathways integrating more and more complex constructs up to twelve genetic modifications has led to stilbene titers ranging from hundreds of milligrams to the gram-scale yields from various carbon sources. Through this review, the microbial production of stilbenes is analyzed, stressing both the engineering dynamic regulation of biosynthetic pathways and the endogenous control of stilbene precursors.
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7
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Recent advances in metabolic engineering of Corynebacterium glutamicum for bioproduction of value-added aromatic chemicals and natural products. Appl Microbiol Biotechnol 2018; 102:8685-8705. [DOI: 10.1007/s00253-018-9289-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/30/2018] [Accepted: 07/31/2018] [Indexed: 02/06/2023]
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8
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Cao W, Ma W, Wang X, Zhang B, Cao X, Chen K, Li Y, Ouyang P. Enhanced pinocembrin production in Escherichia coli by regulating cinnamic acid metabolism. Sci Rep 2016; 6:32640. [PMID: 27586788 PMCID: PMC5009306 DOI: 10.1038/srep32640] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/11/2016] [Indexed: 11/17/2022] Open
Abstract
Microbial biosynthesis of pinocembrin is of great interest in the area of drug research and human healthcare. Here we found that the accumulation of the pathway intermediate cinnamic acid adversely affected pinocembrin production. Hence, a stepwise metabolic engineering strategy was carried out aimed at eliminating this pathway bottleneck and increasing pinocembrin production. The screening of gene source and the optimization of gene expression was first employed to regulate the synthetic pathway of cinnamic acid, which showed a 3.53-fold increase in pinocembrin production (7.76 mg/L) occurred with the alleviation of cinnamic acid accumulation in the engineered E. coli. Then, the downstream pathway that consuming cinnamic acid was optimized by the site-directed mutagenesis of chalcone synthase and cofactor engineering. S165M mutant of chalcone synthase could efficiently improve the pinocembrin production, and allowed the product titer of pinocembrin increased to 40.05 mg/L coupled with the malonyl-CoA engineering. With a two-phase pH fermentation strategy, the cultivation of the optimized strain resulted in a final pinocembrin titer of 67.81 mg/L. The results and engineering strategies demonstrated here would hold promise for the titer improvement of other flavonoids.
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Affiliation(s)
- Weijia Cao
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, P.R. China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Weichao Ma
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, P.R. China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China.,College of Bioengineering and Biotechnology, Tianshui Normal University, Tianshui 741001, P.R. China
| | - Xin Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, P.R. China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Bowen Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, P.R. China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Xun Cao
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, P.R. China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Kequan Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, P.R. China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Yan Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, P.R. China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Pingkai Ouyang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing 211816, P.R. China.,College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
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9
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Pandey RP, Parajuli P, Koffas MA, Sohng JK. Microbial production of natural and non-natural flavonoids: Pathway engineering, directed evolution and systems/synthetic biology. Biotechnol Adv 2016; 34:634-662. [DOI: 10.1016/j.biotechadv.2016.02.012] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 02/24/2016] [Accepted: 02/29/2016] [Indexed: 12/18/2022]
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10
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Liu S, Qi Q, Chao N, Hou J, Rao G, Xie J, Lu H, Jiang X, Gai Y. Overexpression of artificially fused bifunctional enzyme 4CL1-CCR: a method for production of secreted 4-hydroxycinnamaldehydes in Escherichia coli. Microb Cell Fact 2015; 14:118. [PMID: 26264710 PMCID: PMC4534032 DOI: 10.1186/s12934-015-0309-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 08/03/2015] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND 4-Hydroxycinnamaldehydes are important intermediates in several secondary metabolism pathways, including those involved in the biosynthesis of phenolic acids, flavonoids, terpenoids and monolignols. They are also involved in the biosynthesis and degradation of lignins, which are important limiting factors during the processes of papermaking and biofuel production. Access to these aromatic polymers is necessary to explore the secondary biometabolic pathways they are involved in. Coniferaldehyde, sinapaldehyde, p-coumaraldehyde and caffealdehyde are members of the 4-hydroxycinnamaldehyde family. Although coniferaldehyde and sinapaldehyde can be purchased from commercial sources, p-coumaraldehyde and caffealdehyde are not commercially available. Therefore, there is increasing interest in producing 4-hydroxycinnamaldehydes. Here, we attempted to produce 4-hydroxycinnamaldehydes using engineered Escherichia coli. RESULTS 4-Coumaric acid: coenzyme A ligase (4CL1) and cinnamoyl coenzyme A reductase (CCR) were fused by means of genetic engineering to generate an artificial bifunctional enzyme, 4CL1-CCR, which was overexpressed in cultured E. coli supplemented with phenylpropanoic acids. Three 4-hydroxycinnamaldehydes, p-coumaraldehyde, caffealdehyde and coniferaldehyde, were thereby biosynthesized and secreted into the culture medium. The products were extracted and purified from the culture medium, and identically characterized by the HPLC-PDA-ESI-MSn. The productivity of this new metabolic system were 49 mg/L for p-coumaraldehyde, 19 mg/L for caffealdehyde and 35 mg/L for coniferaldehyde. Extracellular hydroxycinnamoyl-coenzyme A thioesters were not detected, indicating that these thioesters could not pass freely through the cellular membrane. The fusion enzyme 4CL1-CCR can catalyze sequential multistep reactions, thereby avoiding the permeability problem of intermediates, which reveals its superiority over a mixture of individual native enzymes. Moreover, we have described a highly sensitive and selective method for separation and identification of phenylpropanoic acids and their corresponding cinnamaldehydes in the present paper. The feasibility of this method has been proven in the application of the method to the analysis of the metabolites of whole-cell catalysts. CONCLUSIONS We have established a bioconversion pathway for the microbial production of valuable 4-hydroxycinnamaldehydes from phenylpropanoic acids. This biotransformation method is both convenient and environmentally friendly, and provides new insights into the biosynthesis of natural plant secondary products.
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Affiliation(s)
- Shuxin Liu
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China.
| | - Qi Qi
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China.
| | - Nan Chao
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China.
| | - Jiayin Hou
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China.
| | - Guodong Rao
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China. .,Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, People's Republic of China.
| | - Jin Xie
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China. .,Institute of Agricultural Bio-Resources, Hunan Academy of Agricultural Sciences, Changsha, 410125, People's Republic of China.
| | - Hai Lu
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China.
| | - Xiangning Jiang
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China. .,The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of Chinese Forestry Administration, National Engineering Laboratory for Tree Breeding, Beijing, 100083, People's Republic of China.
| | - Ying Gai
- College of Biological Science and Technology, Beijing Forestry University, Beijing, 100083, People's Republic of China. .,The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of Chinese Forestry Administration, National Engineering Laboratory for Tree Breeding, Beijing, 100083, People's Republic of China.
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11
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Rodrigues JL, Prather KLJ, Kluskens LD, Rodrigues LR. Heterologous production of curcuminoids. Microbiol Mol Biol Rev 2015; 79:39-60. [PMID: 25631288 PMCID: PMC4402967 DOI: 10.1128/mmbr.00031-14] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
SUMMARY Curcuminoids, components of the rhizome of turmeric, show several beneficial biological activities, including anticarcinogenic, antioxidant, anti-inflammatory, and antitumor activities. Despite their numerous pharmaceutically important properties, the low natural abundance of curcuminoids represents a major drawback for their use as therapeutic agents. Therefore, they represent attractive targets for heterologous production and metabolic engineering. The understanding of biosynthesis of curcuminoids in turmeric made remarkable advances in the last decade, and as a result, several efforts to produce them in heterologous organisms have been reported. The artificial biosynthetic pathway (e.g., in Escherichia coli) can start with the supplementation of the amino acid tyrosine or phenylalanine or of carboxylic acids and lead to the production of several natural curcuminoids. Unnatural carboxylic acids can also be supplemented as precursors and lead to the production of unnatural compounds with possibly novel therapeutic properties. In this paper, we review the natural conversion of curcuminoids in turmeric and their production by E. coli using an artificial biosynthetic pathway. We also explore the potential of other enzymes discovered recently or already used in other similar biosynthetic pathways, such as flavonoids and stilbenoids, to increase curcuminoid yield and activity.
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Affiliation(s)
- J L Rodrigues
- Centre of Biological Engineering, University of Minho, Braga, Portugal MIT-Portugal Program, Cambridge, Massachusetts, USA, and Lisbon, Portugal
| | - K L J Prather
- Department of Chemical Engineering, Synthetic Biology Engineering Research Center, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA MIT-Portugal Program, Cambridge, Massachusetts, USA, and Lisbon, Portugal
| | - L D Kluskens
- Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - L R Rodrigues
- Centre of Biological Engineering, University of Minho, Braga, Portugal MIT-Portugal Program, Cambridge, Massachusetts, USA, and Lisbon, Portugal
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12
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Lin Z, Ma X, Wei H, Li D, Gu Q, Zhu T. Spicarins A–D from acetylated extract of fungus Spicaria elegans KLA03. RSC Adv 2015. [DOI: 10.1039/c5ra01923k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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Metabolic engineering of Escherichia coli for the biosynthesis of flavonoid-O-glucuronides and flavonoid-O-galactoside. Appl Microbiol Biotechnol 2014; 99:2233-42. [PMID: 25515812 DOI: 10.1007/s00253-014-6282-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 11/18/2014] [Accepted: 11/29/2014] [Indexed: 11/27/2022]
Abstract
Most flavonoids are glycosylated and the nature of the attached sugar can strongly affect their physiological properties. Although many flavonoid glycosides have been synthesized in Escherichia coli, most of them are glucosylated. In order to synthesize flavonoids attached to alternate sugars such as glucuronic acid and galactoside, E. coli was genetically modified to express a uridine diphosphate (UDP)-dependent glycosyltransferase (UGT) specific for UDP-glucuronic acid (AmUGT10 from Antirrhinum majus or VvUGT from Vitis vinifera) and UDP-galactoside (PhUGT from Petunia hybrid) along with the appropriate nucleotide biosynthetic genes to enable simultaneous production of their substrates, UDP-glucuronic acid and UDP-galactose. To engineer UDP-glucuronic acid biosynthesis, the araA gene encoding UDP-4-deoxy-4-formamido-L-arabinose formyltransferase/UDP-glucuronic acid C-4″ decarboxylase, which also used UDP-glucuronic acid as a substrate, was deleted in E. coli, and UDP-glucose dehydrogenase (ugd) gene was overexpressed to increase biosynthesis of UDP-glucuronic acid. Using these strategies, luteolin-7-O-glucuronide and quercetin-3-O-glucuronide were biosynthesized to levels of 300 and 687 mg/L, respectively. For the synthesis of quercetin 3-O-galactoside, UGE (encoding UDP-glucose epimerase from Oryza sativa) was overexpressed along with a glycosyltransferase specific for quercetin and UDP-galactose. Using this approach, quercetin 3-O-galactoside was successfully synthesized to a level of 280 mg/L.
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Precursor-Directed Biosynthesis of Curcumin Analogs inEscherichia coli. Biosci Biotechnol Biochem 2014; 74:641-5. [DOI: 10.1271/bbb.90866] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Synthesis of flavonoid O-pentosides by Escherichia coli through engineering of nucleotide sugar pathways and glycosyltransferase. Appl Environ Microbiol 2014; 80:2754-62. [PMID: 24561591 DOI: 10.1128/aem.03797-13] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Plants produce two flavonoid O-pentoses, flavonoid O-xyloside and flavonoid O-arabinoside. However, analyzing their biological properties is difficult because flavonoids are not naturally produced in sufficient quantities. In this study, Escherichia coli was used to synthesize the plant-specific flavonoid O-pentosides quercetin 3-O-xyloside and quercetin 3-O-arabinoside. Two strategies were used. First, E. coli was engineered to express components of the biosynthetic pathways for UDP-xylose and UDP-arabinose. For UDP-xylose biosynthesis, two genes, UXS (UDP-xylose synthase) from Arabidopsis thaliana and ugd (UDP-glucose dehydrogenase) from E. coli, were overexpressed. In addition, the gene encoding ArnA (UDP-l-Ara4N formyltransferase/UDP-GlcA C-4″-decarboxylase), which competes with UXS for UDP-glucuronic acid, was deleted. For UDP-arabinose biosynthesis, UXE (UDP-xylose epimerase) was overexpressed. Next, we engineered UDP-dependent glycosyltransferases (UGTs) to ensure specificity for UDP-xylose and UDP-arabinose. The E. coli strains thus obtained synthesized approximately 160 mg/liter of quercetin 3-O-xyloside and quercetin 3-O-arabinoside.
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16
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Staniek A, Bouwmeester H, Fraser PD, Kayser O, Martens S, Tissier A, van der Krol S, Wessjohann L, Warzecha H. Natural products - learning chemistry from plants. Biotechnol J 2014; 9:326-36. [DOI: 10.1002/biot.201300059] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 11/27/2013] [Accepted: 01/13/2014] [Indexed: 11/12/2022]
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Pandey RP, Parajuli P, Koirala N, Lee JH, Park YI, Sohng JK. Glucosylation of isoflavonoids in engineered Escherichia coli. Mol Cells 2014; 37:172-7. [PMID: 24599002 PMCID: PMC3935630 DOI: 10.14348/molcells.2014.2348] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 12/03/2013] [Accepted: 12/04/2013] [Indexed: 11/27/2022] Open
Abstract
A glycosyltransferase, YjiC, from Bacillus licheniformis has been used for the modification of the commercially available isoflavonoids genistein, daidzein, biochanin A and formononetin. The in vitro glycosylation reaction, using UDP-α-D-glucose as a donor for the glucose moiety and aforementioned four acceptor molecules, showed the prominent glycosylation at 4' and 7 hydroxyl groups, but not at the 5(th) hydroxyl group of the A-ring, resulting in the production of genistein 4'-O-β-D-glucoside, genistein 7-O-β-D-glucoside (genistin), genistein 4',7-O-β-D-diglucoside, biochanin A-7-O-β-D-glucoside (sissotrin), daidzein 4'-O-β-D-glucoside, daidzein 7-O-β-D-glucoside (daidzin), daidzein 4', 7-O-β-D-diglucoside, and formononetin 7-O-β-D-glucoside (ononin). The structures of all the products were elucidated using high performance liquid chromatography-photo diode array and high resolution quadrupole time-of-flight electrospray ionization mass spectrometry (HR QTOFESI/MS) analysis, and were compared with commercially available standard compounds. Significantly higher bioconversion rates of all four isoflavonoids was observed in both in vitro as well as in vivo bioconversion reactions. The in vivo fermentation of the isoflavonoids by applying engineered E. coli BL21(DE3)/ΔpgiΔzwfΔushA overexpressing phosphoglucomutase (pgm) and glucose 1-phosphate uridyltransferase (galU), along with YjiC, found more than 60% average conversion of 200 μM of supplemented isoflavonoids, without any additional UDP-α-D-glucose added in fermentation medium, which could be very beneficial to large scale industrial production of isoflavonoid glucosides.
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Affiliation(s)
- Ramesh Prasad Pandey
- Department of Pharmaceutical Engineering, Institute of Biomolecule Reconstruction, Sun Moon University, Asan 336-708,
Korea
| | - Prakash Parajuli
- Department of Pharmaceutical Engineering, Institute of Biomolecule Reconstruction, Sun Moon University, Asan 336-708,
Korea
| | - Niranjan Koirala
- Department of Pharmaceutical Engineering, Institute of Biomolecule Reconstruction, Sun Moon University, Asan 336-708,
Korea
| | - Joo Ho Lee
- Department of Pharmaceutical Engineering, Institute of Biomolecule Reconstruction, Sun Moon University, Asan 336-708,
Korea
| | - Yong Il Park
- Department of Biotechnology, The Catholic University of Korea, Bucheon 420-743,
Korea
| | - Jae Kyung Sohng
- Department of Pharmaceutical Engineering, Institute of Biomolecule Reconstruction, Sun Moon University, Asan 336-708,
Korea
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18
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Kumar S, Pandey AK. Chemistry and biological activities of flavonoids: an overview. ScientificWorldJournal 2013; 2013:162750. [PMID: 24470791 PMCID: PMC3891543 DOI: 10.1155/2013/162750] [Citation(s) in RCA: 1745] [Impact Index Per Article: 158.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Accepted: 10/07/2013] [Indexed: 02/07/2023] Open
Abstract
There has been increasing interest in the research on flavonoids from plant sources because of their versatile health benefits reported in various epidemiological studies. Since flavonoids are directly associated with human dietary ingredients and health, there is need to evaluate structure and function relationship. The bioavailability, metabolism, and biological activity of flavonoids depend upon the configuration, total number of hydroxyl groups, and substitution of functional groups about their nuclear structure. Fruits and vegetables are the main dietary sources of flavonoids for humans, along with tea and wine. Most recent researches have focused on the health aspects of flavonoids for humans. Many flavonoids are shown to have antioxidative activity, free radical scavenging capacity, coronary heart disease prevention, hepatoprotective, anti-inflammatory, and anticancer activities, while some flavonoids exhibit potential antiviral activities. In plant systems, flavonoids help in combating oxidative stress and act as growth regulators. For pharmaceutical purposes cost-effective bulk production of different types of flavonoids has been made possible with the help of microbial biotechnology. This review highlights the structural features of flavonoids, their beneficial roles in human health, and significance in plants as well as their microbial production.
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Affiliation(s)
- Shashank Kumar
- Department of Biochemistry, University of Allahabad, Allahabad 211002, India
| | - Abhay K. Pandey
- Department of Biochemistry, University of Allahabad, Allahabad 211002, India
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Cobb RE, Ning JC, Zhao H. DNA assembly techniques for next-generation combinatorial biosynthesis of natural products. J Ind Microbiol Biotechnol 2013; 41:469-77. [PMID: 24127070 DOI: 10.1007/s10295-013-1358-3] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 09/25/2013] [Indexed: 12/30/2022]
Abstract
Natural product scaffolds remain important leads for pharmaceutical development. However, transforming a natural product into a drug entity often requires derivatization to enhance the compound's therapeutic properties. A powerful method by which to perform this derivatization is combinatorial biosynthesis, the manipulation of the genes in the corresponding pathway to divert synthesis towards novel derivatives. While these manipulations have traditionally been carried out via restriction digestion/ligation-based cloning, the shortcomings of such techniques limit their throughput and thus the scope of corresponding combinatorial biosynthesis experiments. In the burgeoning field of synthetic biology, the demand for facile DNA assembly techniques has promoted the development of a host of novel DNA assembly strategies. Here we describe the advantages of these recently developed tools for rapid, efficient synthesis of large DNA constructs. We also discuss their potential to facilitate the simultaneous assembly of complete libraries of natural product biosynthetic pathways, ushering in the next generation of combinatorial biosynthesis.
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Affiliation(s)
- Ryan E Cobb
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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Pinocembrin: a novel natural compound with versatile pharmacological and biological activities. BIOMED RESEARCH INTERNATIONAL 2013; 2013:379850. [PMID: 23984355 PMCID: PMC3747598 DOI: 10.1155/2013/379850] [Citation(s) in RCA: 196] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 07/01/2013] [Accepted: 07/09/2013] [Indexed: 01/14/2023]
Abstract
Pinocembrin (5,7-dihydroxyflavanone) is one of the primary flavonoids isolated from the variety of plants, mainly from Pinus heartwood, Eucalyptus, Populus, Euphorbia, and Sparattosperma leucanthum, in the diverse flora and purified by various chromatographic techniques. Pinocembrin is a major flavonoid molecule incorporated as multifunctional in the pharmaceutical industry. Its vast range of pharmacological activities has been well researched including antimicrobial, anti-inflammatory, antioxidant, and anticancer activities. In addition, pinocembrin can be used as neuroprotective against cerebral ischemic injury with a wide therapeutic time window, which may be attributed to its antiexcitotoxic effects. Pinocembrin exhibits pharmacological effects on almost all systems, and our aim is to review the pharmacological and therapeutic applications of pinocembrin with specific emphasis on mechanisms of actions. The design of new drugs based on the pharmacological effects of pinocembrin could be beneficial. This review suggests that pinocembrin is a potentially promising pharmacological candidate, but additional studies and clinical trials are required to determine its specific intracellular sites of action and derivative targets in order to fully understand the mechanism of its anti-inflammatory, anticancer, and apoptotic effects to further validate its medical applications.
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Kim BG, Jung WD, Mok H, Ahn JH. Production of hydroxycinnamoyl-shikimates and chlorogenic acid in Escherichia coli: production of hydroxycinnamic acid conjugates. Microb Cell Fact 2013; 12:15. [PMID: 23383718 PMCID: PMC3621256 DOI: 10.1186/1475-2859-12-15] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 02/02/2013] [Indexed: 02/02/2023] Open
Abstract
Background Hydroxycinnamates (HCs) are mainly produced in plants. Caffeic acid (CA), p-coumaric acid (PA), ferulic acid (FA) and sinapic acid (SA) are members of the HC family. The consumption of HC by human might prevent cardiovascular disease and some types of cancer. The solubility of HCs is increased through thioester conjugation to various compounds such as quinic acid, shikimic acid, malic acid, anthranilic acid, and glycerol. Although hydroxycinnamate conjugates can be obtained from diverse plant sources such as coffee, tomato, potato, apple, and sweet potato, some parts of the world have limited availability to these compounds. Thus, there is growing interest in producing HC conjugates as nutraceutical supplements. Results Hydroxycinnamoyl transferases (HCTs) including hydroxycinnamate-CoA shikimate transferase (HST) and hydroxycinnamate-CoA quinate transferase (HQT) were co-expressed with 4-coumarateCoA:ligase (4CL) in Escherichia coli cultured in media supplemented with HCs. Two hydroxycinnamoyl conjugates, p-coumaroyl shikimates and chlorogenic acid, were thereby synthesized. Total 29.1 mg/L of four different p-coumaroyl shikimates (3-p-coumaroyl shikimate, 4-p-coumaroyl shikimate, 3,4-di-p-coumaroyl shikimate, 3,5-di-p-coumaroyl shikimate, and 4,5-di-p-coumaroyl shikimate) was obtained and 16 mg/L of chlorogenic acid was synthesized in the wild type E. coli strain. To increase the concentration of endogenous acceptor substrates such as shikimate and quinate, the shikimate pathway in E. coli was engineered. A E. coli aroL and aroK gene were mutated and the resulting mutants were used for the production of p-coumaroyl shikimate. An E. coli aroD mutant was used for the production of chlorogenic acid. We also optimized the vector and cell concentration optimization. Conclusions To produce p-coumaroyl-shikimates and chlorogenic acid in E. coli, several E. coli mutants (an aroD mutant for chlorogenic acid production; an aroL, aroK, and aroKL mutant for p-coumaroyl-shikimates production) were made and each mutant was tested using an optimized construct. Using this strategy, we produced 235 mg/L of p-coumaroyl-shikimates and 450 mg/L of chlorogenic acid.
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Affiliation(s)
- Bong-Gyu Kim
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul 143-701, Republic of Korea
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22
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Marienhagen J, Bott M. Metabolic engineering of microorganisms for the synthesis of plant natural products. J Biotechnol 2012; 163:166-78. [PMID: 22687248 DOI: 10.1016/j.jbiotec.2012.06.001] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 05/29/2012] [Accepted: 06/01/2012] [Indexed: 11/17/2022]
Abstract
Of more than 200,000 plant natural products known to date, many demonstrate important pharmacological activities or are of biotechnological significance. However, isolation from natural sources is usually limited by low abundance and environmental, seasonal as well as regional variation, whereas total chemical synthesis is typically commercially unfeasible considering the complex structures of most plant natural products. With advances in DNA sequencing and recombinant DNA technology many of the biosynthetic pathways responsible for the production of these valuable compounds have been elucidated, offering the opportunity of a functional integration of biosynthetic pathways in suitable microorganisms. This approach offers promise to provide sufficient quantities of the desired plant natural products from inexpensive renewable resources. This review covers recent advancements in the metabolic engineering of microorganisms for the production of plant natural products such as isoprenoids, phenylpropanoids and alkaloids, and highlights general approaches and strategies to gain access to the rich biochemical diversity of plants by employing the biosynthetic power of microorganisms.
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Affiliation(s)
- Jan Marienhagen
- Institut für Bio- und Geowissenschaften, IBG-1: Biotechnologie, Forschungszentrum Jülich, D-52425 Jülich, Germany.
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Go MK, Chow JY, Cheung VWN, Lim YP, Yew WS. Establishing a toolkit for precursor-directed polyketide biosynthesis: exploring substrate promiscuities of acid-CoA ligases. Biochemistry 2012; 51:4568-79. [PMID: 22587726 DOI: 10.1021/bi300425j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polyketides are chemically diverse and medicinally important biochemicals that are biosynthesized from acyl-CoA precursors by polyketide synthases. One of the limitations to combinatorial biosynthesis of polyketides has been the lack of a toolkit that describes the means of delivering novel acyl-CoA precursors necessary for polyketide biosynthesis. Using five acid-CoA ligases obtained from various plants and microorganisms, we biosynthesized an initial library of 79 acyl-CoA thioesters by screening each of the acid-CoA ligases against a library of 123 carboxylic acids. The library of acyl-CoA thioesters includes derivatives of cinnamyl-CoA, 3-phenylpropanoyl-CoA, benzoyl-CoA, phenylacetyl-CoA, malonyl-CoA, saturated and unsaturated aliphatic CoA thioesters, and bicyclic aromatic CoA thioesters. In our search for the biosynthetic routes of novel acyl-CoA precursors, we discovered two previously unreported malonyl-CoA derivatives (3-thiophenemalonyl-CoA and phenylmalonyl-CoA) that cannot be produced by canonical malonyl-CoA synthetases. This report highlights the utility and importance of determining substrate promiscuities beyond conventional substrate pools and describes novel enzymatic routes for the establishment of precursor-directed combinatorial polyketide biosynthesis.
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Affiliation(s)
- Maybelle Kho Go
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597
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Abstract
Natural products and their derivatives play an important role in modern healthcare as frontline treatments for many diseases and as inspiration for chemically synthesized therapeutics. With advances in sequencing and recombinant DNA technology, many of the biosynthetic pathways responsible for the production of these chemically complex yet valuable compounds have been elucidated. With an ever-expanding toolkit of biosynthetic components, metabolic engineering is an increasingly powerful method to improve natural product titers and generate novel compounds. Heterologous production platforms have enabled access to pathways from difficult to culture strains, systems biology and metabolic modeling tools have resulted in increasing predictive and analytic capabilities, advances in expression systems and regulation have enabled the fine-tuning of pathways for increased efficiency, and characterization of individual pathway components has facilitated the construction of hybrid pathways for the production of new compounds. These advances in the many aspects of metabolic engineering not only have yielded fascinating scientific discoveries but also make it an increasingly viable approach for the optimization of natural product biosynthesis.
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Affiliation(s)
- Lauren B Pickens
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, USA
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Amino acid substitutions in naphthalene dioxygenase from Pseudomonas sp. strain NCIB 9816-4 result in regio- and stereo-specific hydroxylation of flavanone and isoflavanone. Appl Microbiol Biotechnol 2012; 97:693-704. [PMID: 22391970 DOI: 10.1007/s00253-012-3962-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 02/08/2012] [Accepted: 02/09/2012] [Indexed: 10/28/2022]
Abstract
Wild-type naphthalene dioxygenase (NDO) from Pseudomonas sp. strain NCIB 9816-4 transforms relatively planar flavone and isoflavone to cis-dihydrodiols. However, this enzyme cannot catalyze the transformation of flavanone and isoflavanone in which a phenyl group bonds to the stereogenic C2 or C3 of the C-ring. Protein modeling suggested that Phe224 in the substrate binding site of NDO may play a key role in substrate specificity toward flavanone and isoflavanone. Site-directed mutants of NDO with substitution of Phe224 with Tyr biotransformed only the (S)-stereoisomers of flavanone and isoflavanone, producing an 8-OH group on the A-ring. In contrast, the Phe224Cys and Phe224Gln substitutions, which used (2S)-flavanone as a substrate, and Phe224Lys, which transformed (2S)-flavanone and (3S)-isoflavanone, each showed lower activity than the Phe224Tyr substitution. The remainder of the tested mutants had no activity with flavanone and isoflavanone. Protein docking studies of flavanone and isoflavanone to the modeled mutant enzyme structures revealed that an expanded substrate binding site, due to mutation at 224, as well as appropriate hydrophobic interaction with the residue at 224, are critical for successful binding of the substrates. Results of this study also suggested that in addition to the previously known Phe352, the Phe224 site of NDO appears to be important site for expanding the substrate range of NDO and bringing regiospecific and stereospecific hydroxylation reactions to C8 of the flavanone and isoflavanone A-rings.
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Katsuyama Y, Ohnishi Y, Horinouchi S. Production of Dehydrogingerdione Derivatives in Escherichia coli by Exploiting a Curcuminoid Synthase from Oryza sativa and a β-Oxidation Pathway from Saccharomyces cerevisiae. Chembiochem 2010; 11:2034-41. [DOI: 10.1002/cbic.201000379] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abe I, Morita H. Structure and function of the chalcone synthase superfamily of plant type III polyketide synthases. Nat Prod Rep 2010; 27:809-38. [PMID: 20358127 DOI: 10.1039/b909988n] [Citation(s) in RCA: 194] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Ikuro Abe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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Combinatorial biosynthesis of plant medicinal polyketides by microorganisms. Curr Opin Chem Biol 2009; 13:197-204. [PMID: 19264534 DOI: 10.1016/j.cbpa.2009.02.004] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2008] [Revised: 01/20/2009] [Accepted: 02/02/2009] [Indexed: 11/23/2022]
Abstract
Combinatorial biosynthesis includes an approach in which genes from different organisms are assembled to design and construct an artificial gene cluster for production of bioactive compounds. An Escherichia coli system carrying artificial biosynthetic pathways for production of plant-specific medicinal polyketides, such as flavonoids, stilbenoids, isoflavonoids, and curcuminoids, was designed and expressed. Starting with amino acids tyrosine and phenylalanine as substrates, this system yielded, for example, naringenin, resveratrol, genistein, and curcumin. Supplementation of unnatural carboxylic acids as precursors to the E. coli cells led to production of unnatural compounds. Addition of modification enzymes to the artificial pathways led to production of natural and unnatural flavonols, flavones, and methylated resveratrols. This microbial system is promising not only for construction of larger libraries by employing other polyketide synthases and modification enzymes of various origins as members of the artificial pathway but also for efficient use of the potential of the host microorganisms.
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