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Liu L, You H, Ye L, Ou Q, Zhao Y, Wang J, Niu J. Unveiling the Catalytic Roles of DsBBS1 and DsBBS2 in the Bibenzyl Biosynthesis of Dendrobium sinense. Molecules 2024; 29:3682. [PMID: 39125085 PMCID: PMC11314366 DOI: 10.3390/molecules29153682] [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: 07/11/2024] [Revised: 07/29/2024] [Accepted: 08/01/2024] [Indexed: 08/12/2024] Open
Abstract
Dendrobium sinense, an endemic medicinal herb in Hainan Island, is rich in bibenzyl compounds. However, few studies have explored the molecular mechanisms of bibenzyl biosynthesis. This study presents a comprehensive analysis of DsBBS1 and DsBBS2 function in D. sinense. A molecular docking simulation revealed high-resolution three-dimensional structural models with minor domain orientation differences. Expression analyses of DsBBS1 and DsBBS2 across various tissues indicated a consistent pattern, with the highest expression being found in the roots, implying that they play a pivotal role in bibenzyl biosynthesis. Protein expression studies identified optimal conditions for DsBBS2-HisTag expression and purification, resulting in a soluble protein with a molecular weight of approximately 45 kDa. Enzyme activity assays confirmed DsBBS2's capacity to synthesize resveratrol, exhibiting higher Vmax and lower Km values than DsBBS1. Functional analyses in transgenic Arabidopsis demonstrated that both DsBBS1 and DsBBS2 could complement the Atchs mutant phenotype. The total flavonoid content in the DsBBS1 and DsBBS2 transgenic lines was restored to wild-type levels, while the total bibenzyl content increased. DsBBS1 and DsBBS2 are capable of catalyzing both bibenzyl and flavonoid biosynthesis in Arabidopsis. This study provides valuable insights into the molecular mechanisms underlying the biosynthesis of bibenzyl compounds in D. sinense.
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Affiliation(s)
| | | | | | | | | | - Jia Wang
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants—Ministry of Education, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China; (L.L.); (H.Y.); (L.Y.); (Q.O.); (Y.Z.)
| | - Jun Niu
- Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants—Ministry of Education, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China; (L.L.); (H.Y.); (L.Y.); (Q.O.); (Y.Z.)
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2
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Martin LBB, Kikuchi S, Rejzek M, Owen C, Reed J, Orme A, Misra RC, El-Demerdash A, Hill L, Hodgson H, Liu Y, Keasling JD, Field RA, Truman AW, Osbourn A. Complete biosynthesis of the potent vaccine adjuvant QS-21. Nat Chem Biol 2024; 20:493-502. [PMID: 38278997 PMCID: PMC10972754 DOI: 10.1038/s41589-023-01538-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 12/20/2023] [Indexed: 01/28/2024]
Abstract
QS-21 is a potent vaccine adjuvant currently sourced by extraction from the Chilean soapbark tree. It is a key component of human vaccines for shingles, malaria, coronavirus disease 2019 and others under development. The structure of QS-21 consists of a glycosylated triterpene scaffold coupled to a complex glycosylated 18-carbon acyl chain that is critical for immunostimulant activity. We previously identified the early pathway steps needed to make the triterpene glycoside scaffold; however, the biosynthetic route to the acyl chain, which is needed for stimulation of T cell proliferation, was unknown. Here, we report the biogenic origin of the acyl chain, characterize the series of enzymes required for its synthesis and addition and reconstitute the entire 20-step pathway in tobacco, thereby demonstrating the production of QS-21 in a heterologous expression system. This advance opens up unprecedented opportunities for bioengineering of vaccine adjuvants, investigating structure-activity relationships and understanding the mechanisms by which these compounds promote the human immune response.
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Affiliation(s)
| | | | - Martin Rejzek
- John Innes Centre, Norwich Research Park, Norwich, UK
| | | | - James Reed
- John Innes Centre, Norwich Research Park, Norwich, UK
| | | | | | - Amr El-Demerdash
- John Innes Centre, Norwich Research Park, Norwich, UK
- Department of Chemistry, Faculty of Sciences, Mansoura University, Mansoura, Egypt
| | - Lionel Hill
- John Innes Centre, Norwich Research Park, Norwich, UK
| | | | - Yuzhong Liu
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, Berkeley, CA, USA
- Joint BioEnergy Institute, Emeryville, CA, USA
| | - Jay D Keasling
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, Berkeley, CA, USA
- Joint BioEnergy Institute, Emeryville, CA, USA
- Department of Chemical & Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, USA
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA
- Center for Biosustainability, Danish Technical University, Lyngby, Denmark
- Center for Synthetic Biochemistry, Shenzhen Institutes for Advanced Technologies, Shenzhen, China
| | - Robert A Field
- Department of Chemistry and Manchester Institute of Biotechnology, University of Manchester, Manchester, UK
| | | | - Anne Osbourn
- John Innes Centre, Norwich Research Park, Norwich, UK.
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3
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Biradar DO, Mane YD, Yadav JS, Subba Reddy BV. Prins cyclization: new strategy for the stereoselective total synthesis of Polyrhacitide A. Nat Prod Res 2023:1-11. [PMID: 38041627 DOI: 10.1080/14786419.2023.2288694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/22/2023] [Indexed: 12/03/2023]
Abstract
A highly stereoselective total synthesis of polyrhacitide A, a polyketide natural product, has been accomplished by means of Prins cyclisation. The key precursor i.e. anti-1,3-diol for polyrhacitide A has been prepared from trans-2,6-disubstituted-3,4-dihydropyrans. In this approach, Prins cyclisation has successfully been utilised twice for the construction of 1,3-diol unit of polyrhacitide A. The key steps involved in this approach are Jacobsen hydrolytic kinetic resolution, Mitsunobu inversion, Prins cyclisation and Ring-closing metathesis (RCM).
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Affiliation(s)
- Dhanraj O Biradar
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
- Maharashtra Mahavidyalaya, Nilanga, India
| | | | - Jhillu S Yadav
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
| | - B V Subba Reddy
- Chemistry, Indian Institute of Chemical Technology, Hyderabad, India
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4
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Awwad F, Fantino EI, Héneault M, Diaz-Garza AM, Merindol N, Custeau A, Gélinas SE, Meddeb-Mouelhi F, Li J, Lemay JF, Karas BJ, Desgagne-Penix I. Bioengineering of the Marine Diatom Phaeodactylum tricornutum with Cannabis Genes Enables the Production of the Cannabinoid Precursor, Olivetolic Acid. Int J Mol Sci 2023; 24:16624. [PMID: 38068947 PMCID: PMC10706280 DOI: 10.3390/ijms242316624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/19/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
The increasing demand for novel natural compounds has prompted the exploration of innovative approaches in bioengineering. This study investigates the bioengineering potential of the marine diatom Phaeodactylum tricornutum through the introduction of cannabis genes, specifically, tetraketide synthase (TKS), and olivetolic acid cyclase (OAC), for the production of the cannabinoid precursor, olivetolic acid (OA). P. tricornutum is a promising biotechnological platform due to its fast growth rate, amenability to genetic manipulation, and ability to produce valuable compounds. Through genetic engineering techniques, we successfully integrated the cannabis genes TKS and OAC into the diatom. P. tricornutum transconjugants expressing these genes showed the production of the recombinant TKS and OAC enzymes, detected via Western blot analysis, and the production of cannabinoids precursor (OA) detected using the HPLC/UV spectrum when compared to the wild-type strain. Quantitative analysis revealed significant olivetolic acid accumulation (0.6-2.6 mg/L), demonstrating the successful integration and functionality of the heterologous genes. Furthermore, the introduction of TKS and OAC genes led to the synthesis of novel molecules, potentially expanding the repertoire of bioactive compounds accessible through diatom-based biotechnology. This study demonstrates the successful bioengineering of P. tricornutum with cannabis genes, enabling the production of OA as a precursor for cannabinoid production and the synthesis of novel molecules with potential pharmaceutical applications.
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Affiliation(s)
- Fatima Awwad
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
| | - Elisa Ines Fantino
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
| | - Marianne Héneault
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
| | - Aracely Maribel Diaz-Garza
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
| | - Natacha Merindol
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
- Groupe de Recherche en Biologie Végétale, Université du Québec à Trois-Rivières, Trois-Riviere, QC G9A 5H7, Canada
| | - Alexandre Custeau
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
| | - Sarah-Eve Gélinas
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
| | - Fatma Meddeb-Mouelhi
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
- Groupe de Recherche en Biologie Végétale, Université du Québec à Trois-Rivières, Trois-Riviere, QC G9A 5H7, Canada
| | - Jessica Li
- Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C1, Canada
| | - Jean-François Lemay
- Centre National en Électrochimie et en Technologies Environnementales Inc., 2263 Avenue du Collège, Shawinigan, QC G9N 6V8, Canada
| | - Bogumil J. Karas
- Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, ON N6A 5C1, Canada
| | - Isabel Desgagne-Penix
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, Trois-Riviere, QC G9A 5H7, Canada
- Groupe de Recherche en Biologie Végétale, Université du Québec à Trois-Rivières, Trois-Riviere, QC G9A 5H7, Canada
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5
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Sun Y, Ruiz Orduna A, Zhang Z, Feakins SJ, Jetter R. Biosynthesis of barley wax β-diketones: a type-III polyketide synthase condensing two fatty acyl units. Nat Commun 2023; 14:7284. [PMID: 37949901 PMCID: PMC10638390 DOI: 10.1038/s41467-023-42917-9] [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: 10/20/2022] [Accepted: 10/25/2023] [Indexed: 11/12/2023] Open
Abstract
The surface coatings of cereal plants are dominated by waxy β-diketones crucial for drought resistance and, therefore, grain yield. Here, barley (Hordeum vulgare) wax analyses reveal β-diketone and associated 2-alkanol ester profiles suggesting a common C16 3-ketoacid precursor. Isotope analysis further shows that the major (C31) diketone is synthesized from two plastidial C16 acyl units. Previous studies identified a gene cluster encoding enzymes responsible for β-diketone formation in barley, but left their biochemical functions unknown. Various assays now characterize one of these enzymes as a thioesterase producing long-chain (mainly C16) 3-ketoacids, and another one as a polyketide synthase (PKS) condensing the 3-ketoacids with long-chain (mainly C16) acyl-CoAs into β-diketones. The two enzymes are localized to the plastids and Endoplasmic Reticulum (ER), respectively, implying substrate transfer between these two sub-cellular compartments. Overall, our findings define a two-step pathway involving an unprecedented PKS reaction leading directly to the β-diketone products.
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Affiliation(s)
- Yulin Sun
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Alberto Ruiz Orduna
- Department of Chemistry, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada
| | - Zhonghang Zhang
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Sarah J Feakins
- Department of Earth Sciences, University of Southern California, 3651 Trousdale Pkwy, Los Angeles, CA, 90089, USA
| | - Reinhard Jetter
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
- Department of Chemistry, University of British Columbia, Vancouver, BC, V6T 1Z1, Canada.
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6
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Morita H, Lee YE, Shi SP. Identification of a diarylpentanoid-producing polyketide synthase in the biosynthesis of 2-(2-phenylethyl)chromones in agarwood. J Nat Med 2023; 77:667-676. [PMID: 37597060 PMCID: PMC10465673 DOI: 10.1007/s11418-023-01743-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 08/04/2023] [Indexed: 08/21/2023]
Abstract
Agarwood has been valued as an exquisite, high-grade fragrant wood since ancient times. Due to the scarcity of high-quality agarwood, it is quite expensive, and the number of original plants has been drastically reduced due to overharvesting, including illegal logging. Despite this, a reliable method of agarwood cultivation has yet to be developed. Thus, identifying the biosynthetic pathways of the fragrant components in agarwood might help developers to optimize the culture conditions and create artificial agarwood, by monitoring the expression of the biosynthetic enzymes or their genes. This review presents the characteristics of our recently identified key enzyme, 2-(2-phenylethyl)chromone precursor synthase (PECPS), which generates the common precursor of 2-(2-phenylethyl)chromones (PECs), the main fragrances in agarwood, as well as our reasoning to reach these conclusions. We also discuss the biosynthetic pathway of PECs, unveiled following the identification of PECPS.
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Affiliation(s)
- Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama, 930-0194, Japan.
| | - Yuan-E Lee
- Institute of Natural Medicine, University of Toyama, 2630-Sugitani, Toyama, 930-0194, Japan
| | - She-Po Shi
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, 100029, People's Republic of China.
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7
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Zhu L, Pietiäinen M, Kontturi J, Turkkelin A, Elomaa P, Teeri TH. Polyketide reductases in defense-related parasorboside biosynthesis in Gerbera hybrida share processing strategies with microbial polyketide synthase systems. THE NEW PHYTOLOGIST 2022; 236:296-308. [PMID: 35719102 PMCID: PMC9541798 DOI: 10.1111/nph.18328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 06/13/2022] [Indexed: 05/14/2023]
Abstract
Plant polyketides are well-known for their crucial functions in plants and their importance in the context of human health. They are synthesized by type III polyketide synthases (PKSs) and their final functional diversity is determined by post-PKS tailoring enzymes. Gerbera hybrida is rich in two defense-related polyketides: gerberin and parasorboside. Their synthesis is known to be initiated by GERBERA 2-PYRONE SYNTHASE 1 (G2PS1), but the polyketide reductases (PKRs) that determine their final structure have not yet been identified. We identified two PKR candidates in the pathway, GERBERA REDUCTASE 1 (GRED1) and GRED2. Gene expression and metabolite analysis of different gerbera tissues, cultivars, and transgenic gerbera plants, and in vitro enzyme assays, were performed for functional characterization of the enzymes. GRED1 and GRED2 catalyze the second reduction step in parasorboside biosynthesis. They reduce the proximal keto domain of the linear CoA bound intermediate before lactonization. We identified a crucial tailoring step in an important gerbera PKS pathway and show that plant polyketide biosynthesis shares processing strategies with fungi and bacteria. The two tailoring enzymes are recruited from the ancient sporopollenin biosynthetic pathway to a defense-related PKS pathway in gerbera. Our data provide an example of how plants recruit conserved genes to new functions in secondary metabolism that are important for environmental adaptation.
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Affiliation(s)
- Lingping Zhu
- Department of Agricultural Sciences, Viikki Plant Science CentreUniversity of HelsinkiHelsinki00014 UHFinland
| | - Milla Pietiäinen
- Department of Agricultural Sciences, Viikki Plant Science CentreUniversity of HelsinkiHelsinki00014 UHFinland
| | - Juha Kontturi
- Department of Agricultural Sciences, Viikki Plant Science CentreUniversity of HelsinkiHelsinki00014 UHFinland
| | - Anna Turkkelin
- Department of Agricultural Sciences, Viikki Plant Science CentreUniversity of HelsinkiHelsinki00014 UHFinland
| | - Paula Elomaa
- Department of Agricultural Sciences, Viikki Plant Science CentreUniversity of HelsinkiHelsinki00014 UHFinland
| | - Teemu H. Teeri
- Department of Agricultural Sciences, Viikki Plant Science CentreUniversity of HelsinkiHelsinki00014 UHFinland
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8
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Catalytic innovation underlies independent recruitment of polyketide synthases in cocaine and hyoscyamine biosynthesis. Nat Commun 2022; 13:4994. [PMID: 36008484 PMCID: PMC9411544 DOI: 10.1038/s41467-022-32776-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 08/16/2022] [Indexed: 11/24/2022] Open
Abstract
Tropane alkaloids such as hyoscyamine and cocaine are of importance in medicinal uses. Only recently has the hyoscyamine biosynthetic machinery become complete. However, the cocaine biosynthesis pathway remains only partially elucidated. Here we characterize polyketide synthases required for generating 3-oxo-glutaric acid from malonyl-CoA in cocaine biosynthetic route. Structural analysis shows that these two polyketide synthases adopt distinctly different active site architecture to catalyze the same reaction as pyrrolidine ketide synthase in hyoscyamine biosynthesis, revealing an unusual parallel/convergent evolution of biochemical function in homologous enzymes. Further phylogenetic analysis suggests lineage-specific acquisition of polyketide synthases required for tropane alkaloid biosynthesis in Erythroxylaceae and Solanaceae species, respectively. Overall, our work elucidates not only a key unknown step in cocaine biosynthesis pathway but also, more importantly, structural and biochemical basis for independent recruitment of polyketide synthases in tropane alkaloid biosynthesis, thus broadening the understanding of conservation and innovation of biosynthetic catalysts. Cocaine is a tropane alkaloid produced by Erythroxylum novogranatense. Here the authors identify two polyketide synthases involved in cocaine biosynthesis and provide insight into the parallel evolution of these enzymes in tropane alkaloids-producing plants.
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9
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Wu S, Malaco Morotti AL, Wang S, Wang Y, Xu X, Chen J, Wang G, Tatsis EC. Convergent gene clusters underpin hyperforin biosynthesis in St John's wort. THE NEW PHYTOLOGIST 2022; 235:646-661. [PMID: 35377483 DOI: 10.1111/nph.18138] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
The meroterpenoid hyperforin is responsible for the antidepressant activity of St John's wort extracts, but the genes controlling its biosynthesis are unknown. Using genome mining and biochemical work, we characterize two biosynthetic gene clusters (BGCs) that encode the first three steps in the biosynthesis of hyperforin precursors. The findings of syntenic and phylogenetic analyses reveal the parallel assembly of the two BGCs. The syntenous BGC in Mesua ferrea indicates that the first cluster was assembled before the divergence of the Hypericaceae and Calophyllaceae families. The assembly of the second cluster is the result of a coalescence of genomic fragments after a major duplication event. The differences between the two BGCs - in terms of gene expression, response to methyl jasmonate, substrate specificity and subcellular localization of key enzymes - suggest that the presence of the two clusters could serve to generate separate pools of precursors. The parallel assembly of two BGCs with similar compositions in a single plant species is uncommon, and our work provides insights into how and when these gene clusters form. Our discovery helps to advance our understanding of the evolution of plant specialized metabolism and its genomic organization. Additionally, our results offer a foundation from which hyperforin biosynthesis can be more fully understood, and which can be used in future metabolic engineering applications.
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Affiliation(s)
- Song Wu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 300 Feng Lin Road, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ana Luisa Malaco Morotti
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 300 Feng Lin Road, 200032, China
| | - Shanshan Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 300 Feng Lin Road, 200032, China
| | - Ya Wang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 300 Feng Lin Road, 200032, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoyan Xu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 300 Feng Lin Road, 200032, China
| | - Jianghua Chen
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla County, 666303, China
| | - Guodong Wang
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Evangelos C Tatsis
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 300 Feng Lin Road, 200032, China
- CEPAMS - Centre of Excellence for Plant and Microbial Science, Shanghai, 200032, China
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10
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Chen Y, Wang Y, Liang C, Liu L, Song X, Zhao Y, Wang J, Niu J. Characterization of the Key Bibenzyl Synthase in Dendrobium sinense. Int J Mol Sci 2022; 23:ijms23126780. [PMID: 35743224 PMCID: PMC9223774 DOI: 10.3390/ijms23126780] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/15/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022] Open
Abstract
Dendrobium sinense, an endemic medicinal herb in Hainan Island, is rich in bibenzyls. However, the key rate-limited enzyme involved in bibenzyl biosynthesis has yet to be identified in D. sinense. In this study, to explore whether there is a significant difference between the D. sinense tissues, the total contents of bibenzyls were determined in roots, pseudobulbs, and leaves. The results indicated that roots had higher bibenzyl content than pseudobulbs and leaves. Subsequently, transcriptomic sequencings were conducted to excavate the genes encoding type III polyketide synthase (PKS). A total of six D. sinense PKS (DsPKS) genes were identified according to gene function annotation. Phylogenetic analysis classified the type III DsPKS genes into three groups. Importantly, the c93636.graph_c0 was clustered into bibenzyl synthase (BBS) group, named as D. sinense BBS (DsBBS). The expression analysis by FPKM and RT-qPCR indicated that DsBBS showed the highest expression levels in roots, displaying a positive correlation with bibenzyl contents in different tissues. Thus, the recombinant DsBBS-HisTag protein was constructed and expressed to study its catalytic activity. The molecular weight of the recombinant protein was verified to be approximately 45 kDa. Enzyme activity analysis indicated that the recombinant DsBBS-HisTag protein could use 4-coumaryol-CoA and malonyl-CoA as substrates for resveratrol production in vitro. The Vmax of the recombinant protein for the resveratrol production was 0.88 ± 0.07 pmol s−1 mg−1. These results improve our understanding with respect to the process of bibenzyl biosynthesis in D. sinense.
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Affiliation(s)
| | | | | | | | | | | | | | - Jun Niu
- Correspondence: (J.W.); (J.N.)
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11
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Lee YE, Nakashima Y, Kodama T, Chen X, Morita H. Dual Engineering of Olivetolic Acid Cyclase and Tetraketide Synthase to Generate Longer Alkyl-Chain Olivetolic Acid Analogs. Org Lett 2022; 24:410-414. [PMID: 34939812 DOI: 10.1021/acs.orglett.1c04089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The therapeutic effects of Δ9-tetrahydrocannabinol (Δ9-THC) can be enhanced by modifications of the pentyl moiety at C-3. The engineering of Cannabis sativa olivetolic acid cyclase and tetraketide synthase with F24I and L190G substitutions, respectively, in the biosynthesis of Δ9-THC serves as a platform for the generation of resorcylic acids up to 6-undecylresorcylic acid. These results provide insights into the development of THC analogs with chemically distinct acyl moieties at C-3.
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Affiliation(s)
- Yuan-E Lee
- Institute of Natural Medicine, University of Toyama, Toyoma 930-0194, Japan
| | - Yu Nakashima
- Institute of Natural Medicine, University of Toyama, Toyoma 930-0194, Japan
| | - Takeshi Kodama
- Institute of Natural Medicine, University of Toyama, Toyoma 930-0194, Japan
| | - Xinrui Chen
- Institute of Natural Medicine, University of Toyama, Toyoma 930-0194, Japan
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, Toyoma 930-0194, Japan
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12
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Senn S, Pangell K, Bowerman AL. Metagenomic Insights into the Composition and Function of Microbes Associated with the Rootzone of Datura inoxia. BIOTECH 2022; 11:biotech11010001. [PMID: 35822810 PMCID: PMC9245906 DOI: 10.3390/biotech11010001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/20/2021] [Accepted: 12/30/2021] [Indexed: 11/16/2022] Open
Abstract
The purpose of this paper is to elucidate the roles that microbes may be playing in the rootzone of the medicinal plant Daturainoxia. We hypothesized that the microbes associated with the Datura rootzone would be significantly different than the similar surrounding fields in composition and function. We also hypothesized that rhizospheric and endophytic microbes would be associated with similar metabolic functions to the plant rootzone they inhabited. The methods employed were microbial barcoding, tests of essential oils against antibiotic resistant bacteria and other soil bacterial isolates, 16S Next Generation Sequencing (NGS) metabarcoding, and Whole Genome Shotgun (WGS) taxonomic and functional analyses. A few of the main bacterial genera of interest that were differentially abundant in the Datura root microbiome were Flavobacterium (p = 0.007), Chitinophaga (p = 0.0007), Pedobacter (p = 6 × 10−5), Bradyhizobium (p = 1 × 10−8), and Paenibacillus (p = 1.46 × 10−6). There was significant evidence that the microbes associated with the Datura rootzone had elevated function related to bacterial chalcone synthase (p = 1.49 × 10−3) and permease genes (p < 0.003). There was some evidence that microbial functions in the Datura rootzone provided precursors to important plant bioactive molecules or were beneficial to plant growth. This is important because these compounds are phyto-protective antioxidants and are precursors to many aromatic bioactive compounds that are relevant to human health. In the context of known interactions, and current results, plants and microbes influence the flavonoid biosynthetic pathways of one other, in terms of the regulation of the phenylpropanoid pathway. This is the first study to focus on the microbial ecology of the Datura rootzone. There are possible biopharmaceutical and agricultural applications of the natural interplay that was discovered during this study of the Datura inoxia rhizosphere.
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Affiliation(s)
- Savanah Senn
- Agriculture Sciences Department, Los Angeles Pierce College, 6201 Winnetka Avenue, PMB 553, Woodland Hills, CA 91304, USA; (K.P.); (A.L.B.)
- Environmental Sciences Graduate Program, Oregon State University, Corvallis, OR 97331, USA
- Correspondence:
| | - Kelly Pangell
- Agriculture Sciences Department, Los Angeles Pierce College, 6201 Winnetka Avenue, PMB 553, Woodland Hills, CA 91304, USA; (K.P.); (A.L.B.)
| | - Adrianna L. Bowerman
- Agriculture Sciences Department, Los Angeles Pierce College, 6201 Winnetka Avenue, PMB 553, Woodland Hills, CA 91304, USA; (K.P.); (A.L.B.)
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Mori T, Nakashima Y, Morita H, Abe I. Structure, function, and engineering of plant polyketide synthases. Methods Enzymol 2022; 676:3-48. [DOI: 10.1016/bs.mie.2022.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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A metabolic regulon reveals early and late acting enzymes in neuroactive Lycopodium alkaloid biosynthesis. Proc Natl Acad Sci U S A 2021; 118:2102949118. [PMID: 34112718 DOI: 10.1073/pnas.2102949118] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Plants synthesize many diverse small molecules that affect function of the mammalian central nervous system, making them crucial sources of therapeutics for neurological disorders. A notable portion of neuroactive phytochemicals are lysine-derived alkaloids, but the mechanisms by which plants produce these compounds have remained largely unexplored. To better understand how plants synthesize these metabolites, we focused on biosynthesis of the Lycopodium alkaloids that are produced by club mosses, a clade of plants used traditionally as herbal medicines. Hundreds of Lycopodium alkaloids have been described, including huperzine A (HupA), an acetylcholine esterase inhibitor that has generated interest as a treatment for the symptoms of Alzheimer's disease. Through combined metabolomic profiling and transcriptomics, we have identified a developmentally controlled set of biosynthetic genes, or potential regulon, for the Lycopodium alkaloids. The discovery of this putative regulon facilitated the biosynthetic reconstitution and functional characterization of six enzymes that act in the initiation and conclusion of HupA biosynthesis. This includes a type III polyketide synthase that catalyzes a crucial imine-polyketide condensation, as well as three Fe(II)/2-oxoglutarate-dependent dioxygenase (2OGD) enzymes that catalyze transformations (pyridone ring-forming desaturation, piperidine ring cleavage, and redox-neutral isomerization) within downstream HupA biosynthesis. Our results expand the diversity of known chemical transformations catalyzed by 2OGDs and provide mechanistic insight into the function of noncanonical type III PKS enzymes that generate plant alkaloid scaffolds. These data offer insight into the chemical logic of Lys-derived alkaloid biosynthesis and demonstrate the tightly coordinated coexpression of secondary metabolic genes for the biosynthesis of medicinal alkaloids.
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Bisht R, Bhattacharyya A, Shrivastava A, Saxena P. An Overview of the Medicinally Important Plant Type III PKS Derived Polyketides. FRONTIERS IN PLANT SCIENCE 2021; 12:746908. [PMID: 34721474 PMCID: PMC8551677 DOI: 10.3389/fpls.2021.746908] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 09/08/2021] [Indexed: 05/06/2023]
Abstract
Plants produce interesting secondary metabolites that are a valuable source of both medicines for human use, along with significant advantages for the manufacturer species. The active compounds which lead to these instrumental effects are generally secondary metabolites produced during various plant growth phases, which provide the host survival advantages while affecting human health inadvertently. Different chemical classes of secondary metabolites are biosynthesized by the plant type III polyketide synthases (PKSs). They are simple homodimeric proteins with the unique mechanistic potential to produce a broad array of secondary metabolites by utilizing simpler starter and extender units. These PKS derived products are majorly the precursors of some important secondary metabolite pathways leading to products such as flavonoids, stilbenes, benzalacetones, chromones, acridones, xanthones, cannabinoids, aliphatic waxes, alkaloids, anthrones, and pyrones. These secondary metabolites have various pharmaceutical, medicinal and industrial applications which make biosynthesizing type III PKSs an important tool for bioengineering purposes. Because of their structural simplicity and ease of manipulation, these enzymes have garnered interest in recent years due to their application in the generation of unnatural natural polyketides and modified products in the search for newer drugs for a variety of health problems. The following review covers the biosynthesis of a variety of type III PKS-derived secondary metabolites, their biological relevance, the associated enzymes, and recent research.
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Wang J, Zhang ZK, Jiang FF, Qi BW, Ding N, Hnin SYY, Liu X, Li J, Wang XH, Tu PF, Abe I, Morita H, Shi SP. Deciphering the Biosynthetic Mechanism of Pelletierine in Lycopodium Alkaloid Biosynthesis. Org Lett 2020; 22:8725-8729. [PMID: 33104367 DOI: 10.1021/acs.orglett.0c03339] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Pelletierine, a proposed building block of Lycopodium alkaloids (LAs), was demonstrated to be synthesized via the non-enzymatic Mannich-like condensation of Δ1-piperideine and 3-oxoglutaric acid produced by two new type III PKSs (HsPKS4 and PcPKS1) characterized from Huperzia serrata and Phlegmariurus cryptomerianus, respectively. The findings provide new insights for further understanding the biosynthesis of LAs such as huperzine A.
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Affiliation(s)
- Juan Wang
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ze-Kun Zhang
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Fang-Fang Jiang
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Bo-Wen Qi
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ning Ding
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Saw Yu Yu Hnin
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
| | - Xiao Liu
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Jun Li
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xiao-Hui Wang
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Peng-Fei Tu
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroyuki Morita
- Institute of Natural Medicine, University of Toyama, Sugitani-2630, Toyama 930-0194, Japan
| | - She-Po Shi
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China
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