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Banadka A, Narasimha SW, Dandin VS, Naik PM, Vennapusa AR, Melmaiee K, Vemanna RS, Al-Khayri JM, Thiruvengadam M, Nagella P. Biotechnological approaches for the production of camptothecin. Appl Microbiol Biotechnol 2024; 108:382. [PMID: 38896329 PMCID: PMC11186875 DOI: 10.1007/s00253-024-13187-2] [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: 02/06/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 06/21/2024]
Abstract
Camptothecin (CPT), an indole alkaloid popular for its anticancer property, is considered the third most promising drug after taxol and famous alkaloids from Vinca for the treatment of cancer in humans. Camptothecin was first identified in Camptotheca acuminata followed by several other plant species and endophytic fungi. Increased harvesting driven by rising global demand is depleting the availability of elite plant genotypes, such as Camptotheca acuminata and Nothapodytes nimmoniana, crucial for producing alkaloids used in treating diseases like cancer. Conservation of these genotypes for the future is imperative. Therefore, research on different plant tissue culture techniques such as cell suspension culture, hairy roots, adventitious root culture, elicitation strategies, and endophytic fungi has been adopted for the production of CPT to meet the increasing demand without affecting the source plant's existence. Currently, another strategy to increase camptothecin yield by genetic manipulation is underway. The present review discusses the plants and endophytes that are employed for camptothecin production and throws light on the plant tissue culture techniques for the regeneration of plants, callus culture, and selection of cell lines for the highest camptothecin production. The review further explains the simple, accurate, and cost-effective extraction and quantification methods. There is enormous potential for the sustainable production of CPT which could be met by culturing of suitable endophytes or plant cell or organ culture in a bioreactor scale production. Also, different gene editing tools provide opportunities for engineering the biosynthetic pathway of CPT, and the overall CPT production can be improved . KEY POINTS: • Camptothecin is a naturally occurring alkaloid with potent anticancer properties, primarily known for its ability to inhibit DNA topoisomerase I. • Plants and endophytes offer a potential approach for camptothecin production. • Biotechnology approaches like plant tissue culture techniques enhanced camptothecin production.
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Affiliation(s)
- Akshatha Banadka
- Department of Life Sciences, CHRIST (Deemed to be University), Bangalore, 560 029, Karnataka, India
| | - Sudheer Wudali Narasimha
- Department of Life Sciences, CHRIST (Deemed to be University), Bangalore, 560 029, Karnataka, India
| | | | - Poornanand M Naik
- Department of Botany, Karnatak University, Dharwad, 580003, Karnataka, India
| | | | - Kalpalatha Melmaiee
- Department of Agriculture and Natural Resources, Delaware State University, Dover, DE, 19901, USA
| | - Ramu S Vemanna
- Laboratory of Plant Functional Genomics, Regional Center for Biotechnology, Faridabad, 121001, Haryana, India
| | - Jameel M Al-Khayri
- Department of Agricultural Biotechnology, College of Agriculture and Food Sciences, King Faisal University, Al- Ahsa, 31982, Saudi Arabia.
| | - Muthu Thiruvengadam
- Department of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul, South Korea
| | - Praveen Nagella
- Department of Life Sciences, CHRIST (Deemed to be University), Bangalore, 560 029, Karnataka, India.
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2
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Durand M, Besseau S, Papon N, Courdavault V. Unlocking plant bioactive pathways: omics data harnessing and machine learning assisting. Curr Opin Biotechnol 2024; 87:103135. [PMID: 38728826 DOI: 10.1016/j.copbio.2024.103135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 04/02/2024] [Accepted: 04/12/2024] [Indexed: 05/12/2024]
Abstract
Plant bioactives hold immense potential in the medicine and food industry. The recent advancements in omics applied in deciphering specialized metabolic pathways underscore the importance of high-quality genome releases and the wealth of data in metabolomics and transcriptomics. While harnessing data, whether integrated or standalone, has proven successful in unveiling plant natural product (PNP) biosynthetic pathways, the democratization of machine learning in biology opens exciting new opportunities for enhancing the exploration of these pathways. This review highlights the recent breakthroughs in disrupting plant-specialized biosynthetic pathways through the utilization of omics data harnessing and machine learning techniques.
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Affiliation(s)
- Mickael Durand
- Biomolécules et Biotechnologies Végétales, EA2106, Université de Tours, 37200 Tours, France
| | - Sébastien Besseau
- Biomolécules et Biotechnologies Végétales, EA2106, Université de Tours, 37200 Tours, France
| | - Nicolas Papon
- Univ Angers, Univ Brest, IRF, SFR ICAT, F-49000 Angers, France
| | - Vincent Courdavault
- Biomolécules et Biotechnologies Végétales, EA2106, Université de Tours, 37200 Tours, France.
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3
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Pu X, Zhang J, He J, Ai Z, He X, Zhou X, Tong S, Dai X, Wu Q, Hu J, He J, Wang H, Wang W, Liao J, Zhang L. Discovery of a novel flavonol O-methyltransferase possessing sequential 4'- and 7-O-methyltransferase activity from Camptotheca acuminata Decne. Int J Biol Macromol 2024; 266:131381. [PMID: 38580009 DOI: 10.1016/j.ijbiomac.2024.131381] [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: 01/25/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/07/2024]
Abstract
The biosynthetic route for flavonol in Camptotheca acuminata has been recently elucidated from a chemical point of view. However, the genes involved in flavonol methylation remain unclear. It is a critical step for fully uncovering the flavonol metabolism in this ancient plant. In this study, the multi-omics resource of this plant was utilized to perform flavonol O-methyltransferase-oriented mining and screening. Two genes, CaFOMT1 and CaFOMT2 are identified, and their recombinant CaFOMT proteins are purified to homogeneity. CaFOMT1 exhibits strict substrate and catalytic position specificity for quercetin, and selectively methylates only the 4'-OH group. CaFOMT2 possesses sequential O-methyltransferase activity for the 4'-OH and 7-OH of quercetin. These CaFOMT genes are enriched in the leaf and root tissues. The catalytic dyad and critical substrate-binding sites of the CaFOMTs are determined by molecular docking and further verified through site-mutation experiments. PHE181 and MET185 are designated as the critical sites for flavonol substrate selectivity. Genomic environment analysis indicates that CaFOMTs evolved independently and that their ancestral genes are different from that of the known Ca10OMT. This study provides molecular insights into the substrate-binding pockets of two new CaFOMTs responsible for flavonol metabolism in C. acuminata.
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Affiliation(s)
- Xiang Pu
- College of Science, Sichuan Agricultural University, Ya'an 625104, China; Featured Medicinal Plants Sharing and Service Platform of Sichuan Province, Ya'an 625104, China.
| | - Jiahua Zhang
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Jinwei He
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Zhihui Ai
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Xiaoxue He
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Xiaojun Zhou
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Shiyuan Tong
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Xinyue Dai
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Qiqi Wu
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Jiayu Hu
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Jingshu He
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Hanguang Wang
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Wei Wang
- College of Science, Sichuan Agricultural University, Ya'an 625104, China
| | - Jinqiu Liao
- College of Life Science, Sichuan Agricultural University, Ya'an 625104, China; Featured Medicinal Plants Sharing and Service Platform of Sichuan Province, Ya'an 625104, China
| | - Li Zhang
- College of Science, Sichuan Agricultural University, Ya'an 625104, China; Featured Medicinal Plants Sharing and Service Platform of Sichuan Province, Ya'an 625104, China.
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4
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Aničić N, Matekalo D, Skorić M, Gašić U, Nestorović Živković J, Dmitrović S, Božunović J, Milutinović M, Petrović L, Dimitrijević M, Anđelković B, Mišić D. Functional iridoid synthases from iridoid producing and non-producing Nepeta species (subfam. Nepetoidae, fam. Lamiaceae). FRONTIERS IN PLANT SCIENCE 2024; 14:1211453. [PMID: 38235204 PMCID: PMC10792066 DOI: 10.3389/fpls.2023.1211453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 12/11/2023] [Indexed: 01/19/2024]
Abstract
Iridoids, a class of atypical monoterpenes, exhibit exceptional diversity within the Nepeta genus (subfam. Nepetoidae, fam. Lamiaceae).The majority of these plants produce iridoids of the unique stereochemistry, with nepetalactones (NLs) predominating; however, a few Nepeta species lack these compounds. By comparatively analyzing metabolomics, transcriptomics, gene co-expression, and phylogenetic data of the iridoid-producing N. rtanjensis Diklić & Milojević and iridoid-lacking N. nervosa Royle & Bentham, we presumed that one of the factors responsible for the absence of these compounds in N. nervosa is iridoid synthase (ISY). Two orthologues of ISY were mined from leaves transcriptome of N. rtanjensis (NrPRISE1 and NrPRISE2), while in N. nervosa only one (NnPRISE) was identified, and it was phylogenetically closer to the representatives of the Family 1 isoforms, designated as P5βRs. Organ-specific and MeJA-elicited profiling of iridoid content and co-expression analysis of IBG candidates, highlighted NrPRISE2 and NnPRISE as promising candidates for ISY orthologues, and their function was confirmed using in vitro assays with recombinant proteins, after heterologous expression of recombinant proteins in E. coli and their His-tag affinity purification. NrPRISE2 demonstrated ISY activity both in vitro and likely in planta, which was supported by the 3D modeling and molecular docking analysis, thus reclassification of NrPRISE2 to NrISY is accordingly recommended. NnPRISE also displays in vitro ISY-like activity, while its role under in vivo conditions was not here unambiguously confirmed. Most probably under in vivo conditions the NnPRISE lacks substrates to act upon, as a result of the loss of function of some of the upstream enzymes of the iridoid pathway. Our ongoing work is conducted towards re-establishing the biosynthesis of iridoids in N. nervosa.
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Affiliation(s)
- Neda Aničić
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Dragana Matekalo
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Marijana Skorić
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Uroš Gašić
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Jasmina Nestorović Živković
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Slavica Dmitrović
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Jelena Božunović
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Milica Milutinović
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Luka Petrović
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Milena Dimitrijević
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
| | | | - Danijela Mišić
- Institute for Biological Research “Siniša Stanković” - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
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5
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Pu X, Chen M, Lei M, Lin X, Zhang J, Ai Z, He J, Liu Y, Yang S, Wang H, Liao J, Zhang L, Huang Q. Discovery of unique CYP716C oxidase involved in pentacyclic triterpene biosynthesis from Camptotheca acuminata. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107929. [PMID: 37542826 DOI: 10.1016/j.plaphy.2023.107929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/30/2023] [Accepted: 08/01/2023] [Indexed: 08/07/2023]
Abstract
Dozens of triterpenes have been isolated from Camptotheca acuminata, however, triterpene metabolism in this plant remains poorly understood. The common C28 carboxy located in the oleanane-type and ursane-type triterpenes indicates the existence of a functionally active triterpene, C28 oxidase, in this plant. Thorough mining and screening of the CYP716 genes were initiated using the multi-omics database for C. acuminata. Two CYP716A (CYP716A394 and CYP716A395) and three CYP716C (CYP716C80-CYP716C82) were identified based on conserved domain analyses and hierarchical cluster analyses. CYP716 microsomal proteins were prepared and their enzymatic activities were evaluated in vitro. The CYP716 classified into the CYP716C subfamily displays β-amyrin oxidation activity, and CYP716A displays α-amyrin and lupeol oxidation activity, based on gas chromatography-mass spectrometry analyses. The oxidation products were determined based on their mass and nuclear magnetic resonance spectrums. The optimum reaction conditions and kinetic parameters for CYP716C were determined, and functions were verified in Nicotiana benthaminana. Relative quantitative analyses revealed that these CYP716C genes were enriched in the leaves of C. acuminata plantlets after 60 d. These results indicate that CYP716C plays a dominant role in oleanane-type triterpene metabolism in the leaves of C. acuminata via a substrate-specific manner, and CYP716A is responsible for ursane- and lupane-type triterpene metabolism in fruit. This study provides valuable insights into the unique CYP716C-mediated oxidation step of pentacyclic triterpene biosynthesis in C. acuminata.
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Affiliation(s)
- Xiang Pu
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China.
| | - Menghan Chen
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Ming Lei
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Xinyu Lin
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Jiahua Zhang
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Zhihui Ai
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Jinwei He
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Yuke Liu
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Shengnan Yang
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Hanguang Wang
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Jinqiu Liao
- College of Life Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Li Zhang
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China
| | - Qianming Huang
- College of Science, Sichuan Agricultural University, Ya'an, 625104, PR China.
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6
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Pu X, Wang M, Chen M, Lin X, Lei M, Zhang J, Yang S, Wang H, Liao J, Zhang L, Huang Q. Proteomics-Guided Mining and Characterization of Epoxidase Involved in Camptothecin Biosynthesis from Camptotheca acuminata. ACS Chem Biol 2023; 18:1772-1785. [PMID: 37523250 DOI: 10.1021/acschembio.3c00222] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The detailed metabolic map for camptothecin (CPT) biosynthesis in Camptotheca acuminata has been proposed according to our combined omics results. However, the CYP450-mediated epoxidation step in CPT biosynthesis remains unexplored. A proteomics-guided approach was used to identify and annotate the proteins enriched during the vigorous CPT metabolism period in mature C. acuminata and seedlings. Comparative analyses revealed that the CPT and flavonoid biosyntheses were vigorous in stems and all of the samples except the leaves, respectively. The CYP71BE genes were screened based on their enrichment patterns at the transcriptomic-proteomic level and biochemically characterized in Saccharomyces cerevisiae WAT11. Four CYP71BE proteins exhibited in vitro isoliquiritigenin epoxidase activity. Additionally, CYP71BE206 showed epoxidase activity toward strictosamide, the critical precursor for CPT biosynthesis, both in vitro and in Nicotiana benthamiana. In planta functional verification suggested that CYP71BE206 is involved in CPT biosynthesis. Their catalytic conditions were optimized, and the enzymatic parameters were determined. This study provides valuable insight into the CYP71BE-mediated epoxidation step for CPT biosynthesis and offers evidence to verify that the newly characterized epoxidase (CYP71BE206) is simultaneously responsible for the biosynthesis of CPT and the flavonoid in this plant. An evolution event probably happened on ancestral CYP71BE, resulting in the neofunctionalization of CYP71BE206.
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Affiliation(s)
- Xiang Pu
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Minji Wang
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Menghan Chen
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Xinyu Lin
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Ming Lei
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Jiahua Zhang
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Shengnan Yang
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Hanguang Wang
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Jinqiu Liao
- College of Life Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Li Zhang
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Qianming Huang
- College of Science, Sichuan Agricultural University, Ya'an 625014, China
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Wang J, Li Y, Yang Y, Xiao C, Ruan Q, Li P, Zhou Q, Sheng M, Hao X, Kai G. Comprehensive analysis of OpHD-ZIP transcription factors related to the regulation of camptothecin biosynthesis in Ophiorrhiza pumila. Int J Biol Macromol 2023; 242:124910. [PMID: 37217041 DOI: 10.1016/j.ijbiomac.2023.124910] [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: 03/31/2023] [Revised: 05/12/2023] [Accepted: 05/13/2023] [Indexed: 05/24/2023]
Abstract
Ophiorrhiza pumila, as a folk herb belonging to the Rubiaceae family, has become a potential source of camptothecin (CPT), which is a monoterpenoid indole alkaloid with good antitumor property. However, the camptothecin content in this herb is low, and is far from meeting the increasing clinical demand. Understanding the transcriptional regulation of camptothecin biosynthesis provides an effective strategy for improvement of camptothecin yield. Previous studies have demonstrated several transcription factors that are related to camptothecin biosynthesis, while the functions of HD-ZIP members in O. pumila have not been investigated yet. In this study, 32 OpHD-ZIP transcription factor members were genome-wide identified. Phylogenetic tree showed that these OpHD-ZIP proteins are divided into four subfamilies. Based on the transcriptome data, nine OpHD-ZIP genes were shown to be predominantly expressed in O. pumila roots, which were in line with the camptothecin biosynthetic genes. Co-expression analysis showed that OpHD-ZIP7 and OpHD-ZIP20 were potentially related to the modulation of camptothecin biosynthesis. Dual-luciferase reporter assays (Dual-LUC) showed that both OpHD-ZIP7 and OpHD-ZIP20 could activate the expression of camptothecin biosynthetic genes OpIO and OpTDC. In conclusion, this study offered the promising data for exploring the roles of OpHD-ZIP transcription factors in regulating camptothecin biosynthesis.
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Affiliation(s)
- Jingyi Wang
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yongpeng Li
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yinkai Yang
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Chengyu Xiao
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Qingyan Ruan
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Pengyang Li
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Qin Zhou
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Miaomiao Sheng
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Xiaolong Hao
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Guoyin Kai
- Zhejiang International Science and Technology Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, Jinhua Academy, School of Pharmaceutical Sciences, Academy of Chinese Medical Science, Zhejiang Chinese Medical University, Hangzhou 310053, China.
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Yin X, Liu J, Kou C, Lu J, Zhang H, Song W, Li Y, Xue Z, Hua X. Deciphering the network of cholesterol biosynthesis in Paris polyphylla laid a base for efficient diosgenin production in plant chassis. Metab Eng 2023; 76:232-246. [PMID: 36849090 DOI: 10.1016/j.ymben.2023.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 01/20/2023] [Accepted: 02/19/2023] [Indexed: 02/27/2023]
Abstract
Cholesterol serves as a key precursor for many high-value chemicals such as plant-derived steroidal saponins and steroidal alkaloids, but a plant chassis for effective biosynthesis of high levels of cholesterol has not been established. Plant chassis have significant advantages over microbial chassis in terms of membrane protein expression, precursor supply, product tolerance, and regionalization synthesis. Here, using Agrobacterium tumefaciens-mediated transient expression technology, Nicotiana benthamiana, and a step-by-step screening approach, we identified nine enzymes (SSR1-3, SMO1-3, CPI-5, CYP51G, SMO2-2, C14-R-2, 8,7SI-4, C5-SD1, and 7-DR1-1) from the medicinal plant Paris polyphylla and established detailed biosynthetic routes from cycloartenol to cholesterol. Specfically, we optimized HMGR, a key gene of the mevalonate pathway, and co-expressed it with the PpOSC1 gene to achieve a high level of cycloartenol (28.79 mg/g dry weight, which is a sufficient amount of precursor for cholesterol biosynthesis) synthesis in the leaves of N. benthamiana. Subsequently, using a one-by-one elimination method we found that six of these enzymes (SSR1-3, SMO1-3, CPI-5, CYP51G, SMO2-2, and C5-SD1) were crucial for cholesterol production in N. benthamiana, and we establihed a high-efficiency cholesterol synthesis system with a yield of 5.63 mg/g dry weight. Using this strategy, we also discovered the biosynthetic metabolic network responsible for the synthesis of a common aglycon of steroidal saponin, diosgenin, using cholesterol as a substrate, obtaining a yield of 2.12 mg/g dry weight in N. benthamiana. Our study provides an effective strategy to characterize the metabolic pathways of medicinal plants that lack a system for in vivo functional verification, and also lays a foundation for the synthesis of active steroid saponins in plant chassis.
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Affiliation(s)
- Xue Yin
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China
| | - Jia Liu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China
| | - Chengxi Kou
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China
| | - Jiaojiao Lu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China
| | - He Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China
| | - Wei Song
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China; Heilongjiang Key Laboratory of Plant Bioactive Substance Biosynthesis and Utilization, Northeast Forestry University, Harbin, China.
| | - Yuhua Li
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China; Heilongjiang Key Laboratory of Plant Bioactive Substance Biosynthesis and Utilization, Northeast Forestry University, Harbin, China.
| | - Zheyong Xue
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China; Heilongjiang Key Laboratory of Plant Bioactive Substance Biosynthesis and Utilization, Northeast Forestry University, Harbin, China.
| | - Xin Hua
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Harbin, China; Heilongjiang Key Laboratory of Plant Bioactive Substance Biosynthesis and Utilization, Northeast Forestry University, Harbin, China.
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Yang M, Yao B, Lin R. Profiles of Metabolic Genes in Uncaria rhynchophylla and Characterization of the Critical Enzyme Involved in the Biosynthesis of Bioactive Compounds-(iso)Rhynchophylline. Biomolecules 2022; 12:biom12121790. [PMID: 36551218 PMCID: PMC9775700 DOI: 10.3390/biom12121790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/17/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022] Open
Abstract
Rhynchophylline (RIN) and isorhynchophylline (IRN), two of the representative types of indole alkaloids, showed the unique spiroindole structures produced in Uncaria rhynchophylla. As the bioactive constituent of U. rhynchophylla, IRN has recently drawn extensive attention toward antihypertensive and neuroprotective activities. Despite their medicinal importance and unique chemical structure, the biosynthetic pathways of plant spiroindole alkaloids are still largely unknown. In this study, we used U. rhynchophylla, extensively used in traditional Chinese medicine (TCM), a widely cultivated plant of the Uncaria genus, to investigate the biosynthetic genes and characterize the functional enzymes in the spiroindole alkaloids. We aim to use the transcriptome platform to analyse the tissue-specific gene expression in spiroindole alkaloids-producing tissues, including root, bud, stem bark and leaf. The critical genes involved in the biosynthesis of precursors and scaffold formation of spiroindole alkaloids were discovered and characterized. The datasets from this work provide an essential resource for further investigating metabolic pathways in U. rhynchophylla and facilitate novel functional enzyme characterization and a good biopharming approach to spiroindole alkaloids.
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Affiliation(s)
- Mengquan Yang
- College of Tobacco Science, Henan Agricultural University, Zhengzhou 450002, China
- School of Science, Beijing University of Chemical Technology, Chaoyang District, Beijing 100029, China
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Bowen Yao
- School of Science, Beijing University of Chemical Technology, Chaoyang District, Beijing 100029, China
| | - Rongmei Lin
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China
- Correspondence:
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