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Crowe SA, Liu Y, Zhao X, Scheller HV, Keasling JD. Advances in Engineering Nucleotide Sugar Metabolism for Natural Product Glycosylation in Saccharomyces cerevisiae. ACS Synth Biol 2024; 13:1589-1599. [PMID: 38820348 DOI: 10.1021/acssynbio.3c00737] [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] [Indexed: 06/02/2024]
Abstract
Glycosylation is a ubiquitous modification present across all of biology, affecting many things such as physicochemical properties, cellular recognition, subcellular localization, and immunogenicity. Nucleotide sugars are important precursors needed to study glycosylation and produce glycosylated products. Saccharomyces cerevisiae is a potentially powerful platform for producing glycosylated biomolecules, but it lacks nucleotide sugar diversity. Nucleotide sugar metabolism is complex, and understanding how to engineer it will be necessary to both access and study heterologous glycosylations found across biology. This review overviews the potential challenges with engineering nucleotide sugar metabolism in yeast from the salvage pathways that convert free sugars to their associated UDP-sugars to de novo synthesis where nucleotide sugars are interconverted through a complex metabolic network with governing feedback mechanisms. Finally, recent examples of engineering complex glycosylation of small molecules in S. cerevisiae are explored and assessed.
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Affiliation(s)
- Samantha A Crowe
- Department of Chemical & Biomolecular Engineering, University of California, Berkeley, California 94720, United States
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, California 94720, United States
- Joint BioEnergy Institute, Emeryville, California 94608, United States
| | - Yuzhong Liu
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, California 94720, United States
- Joint BioEnergy Institute, Emeryville, California 94608, United States
| | - Xixi Zhao
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, California 94720, United States
- Joint BioEnergy Institute, Emeryville, California 94608, United States
| | - Henrik V Scheller
- Joint BioEnergy Institute, Emeryville, California 94608, United States
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, United States
| | - Jay D Keasling
- Department of Chemical & Biomolecular Engineering, University of California, Berkeley, California 94720, United States
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, California 94720, United States
- Joint BioEnergy Institute, Emeryville, California 94608, United States
- Department of Bioengineering, University of California, Berkeley, California 94720, United States
- Division of Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Center for Biosustainability, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
- Center for Synthetic Biochemistry, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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2
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Xu WK, Zhao CX, Yang XW, Chen YG, Long LP, Yan YF, Guo K, Li SH, Liu Y. Characterization of a glycosyltransferase from Paris polyphylla for application in biosynthesis of rare ophiopogonins and ginsenosides. PHYTOCHEMISTRY 2024; 225:114173. [PMID: 38851474 DOI: 10.1016/j.phytochem.2024.114173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 06/02/2024] [Accepted: 06/04/2024] [Indexed: 06/10/2024]
Abstract
Saponins are bioactive components of many medicinal plants, possessing complicated chemical structures and extensive pharmacological activities, but the production of high-value saponins remains challenging. In this study, a 6'-O-glucosyltransferase PpUGT7 (PpUGT91AH7) was functionally characterized from Paris polyphylla Smith var. yunnanensis (Franch.) Hand. -Mazz., which can transfer a glucosyl group to the C-6' position of diosgenin-3-O-rhamnosyl-(1 → 2)-glucoside (1), pennogenin-3-O-rhamnosyl-(1 → 2)-glucoside (2), and diosgenin-3-O-glucoside (5). The KM and Kcat values of PpUGT7 towards the substrate 2 were 8.4 μM and 2 × 10-3 s-1, respectively. Through molecular docking and site-directed mutagenesis, eight residues were identified to interact with the sugar acceptor 2 and be crucial for enzyme activity. Moreover, four rare ophiopogonins and ginsenosides were obtained by combinatorial biosynthesis, including an undescribed compound ruscogenin-3-O-glucosyl-(1 → 6)-glucoside (10). Firstly, two monoglycosides 9 and 11 were generated using a known sterol 3-O-β-glucosyltransferase PpUGT80A40 with ruscogenin (7) and 20(S)-protopanaxadiol (8) as substrates, which were further glycosylated to the corresponding diglycosides 10 and 12 under the catalysis of PpUGT7. In addition, compounds 7-11 were found to show inhibitory effects on the secretion of TNF-α and IL-6 in macrophages RAW264.7. The findings provide valuable insights into the enzymatic glycosylation processes in the biosynthesis of bioactive saponins in P. polyphylla var. yunnanensis, and also serve as a reference for utilizing UDP-glycosyltransferases to construct high-value or rare saponins for development of new therapeutic agents.
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Affiliation(s)
- Wen-Ke Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, and Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Chen-Xiao Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, and Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Xiao-Wen Yang
- State Key Laboratory of Southwestern Chinese Medicine Resources, and Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Yue-Gui Chen
- Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China
| | - Li-Ping Long
- State Key Laboratory of Southwestern Chinese Medicine Resources, and Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Yuan-Feng Yan
- State Key Laboratory of Southwestern Chinese Medicine Resources, and Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Kai Guo
- State Key Laboratory of Southwestern Chinese Medicine Resources, and Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Sheng-Hong Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, and Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China; Key Laboratory of Phytochemistry and Natural Medicines, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China.
| | - Yan Liu
- State Key Laboratory of Southwestern Chinese Medicine Resources, and Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China.
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3
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Lu J, Yan S, Xue Z. Biosynthesis and functions of triterpenoids in cereals. J Adv Res 2024:S2090-1232(24)00211-X. [PMID: 38788922 DOI: 10.1016/j.jare.2024.05.021] [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: 03/06/2024] [Revised: 05/03/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024] Open
Abstract
BACKGROUND Triterpenoids are versatile secondary metabolites with a diverse array of physiological activities, possessing valuable pharmacological effects and influencing the growth and development of plants. As more triterpenoids in cereals are unearthed and characterized, their biological roles in plant growth and development are gaining recognition. AIM OF THE REVIEW This review provides an overview of the structures, biosynthetic pathways, and diverse biological functions of triterpenoids identified in cereals. Our goal is to establish a basis for further exploration of triterpenoids with novel structures and functional activities in cereals, and to facilitate the potential application of triterpenoids in grain breeding, thus accelerating the development of superior grain varieties. KEY SCIENTIFIC CONCEPTS OF THE REVIEW This review consolidates information on various triterpenoid skeletons and derivatives found in cereals, and summarizes the pivotal enzyme genes involved, including oxidosqualene cyclase (OSC) and other triterpenoid modifying enzymes like cytochrome P450, glycosyltransferase, and acyltransferase. Triterpenoid-modifying enzymes exhibit specificity towards catalytic sites within triterpenoid skeletons, generating a diverse array of functional triterpenoid derivatives. Furthermore, triterpenoids have been shown to significantly impact the nutritional value, yield, disease resistance, and stress response of cereals.
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Affiliation(s)
- Jiaojiao Lu
- 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
| | - Shan Yan
- 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; State Key Laboratory of Rice Biology and Breeding, China National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310006, China.
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Du Z, Gao F, Wang S, Sun S, Chen C, Wang X, Wu R, Yu X. Genome-Wide Investigation of Oxidosqualene Cyclase Genes Deciphers the Genetic Basis of Triterpene Biosynthesis in Tea Plants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:10584-10595. [PMID: 38652774 DOI: 10.1021/acs.jafc.4c00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Triterpenoids from Camellia species comprise a diverse class of bioactive compounds with great therapeutic potential. However, triterpene biosynthesis in tea plants (Camellia sinensis) remains elusive. Here, we identified eight putative 2,3-oxidosqualene cyclase (OSC) genes (CsOSC1-8) from the tea genome and characterized the functions of five through heterologous expression in yeast and tobacco and transient overexpression in tea plants. CsOSC1 was found to be a β-amyrin synthase, whereas CsOSC4, 5, and 6 exhibited multifunctional α-amyrin synthase activity. Molecular docking and site-directed mutagenesis showed that the CsOSC6M259T/W260L double mutant yielded >40% lupeol, while the CsOSC1 W259L single mutant alone was sufficient for lupeol production. The V732F mutation in CsOSC5 altered product formation from friedelin to taraxasterol and ψ-taraxasterol. The L254 M mutation in the cycloartenol synthase CsOSC8 enhanced the catalytic activity. Our findings shed light on the molecular basis governing triterpene diversity in tea plants and offer potential avenues for OSC engineering.
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Affiliation(s)
- Zhenghua Du
- School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Fuquan Gao
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shuyan Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Shuai Sun
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chanxin Chen
- School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaxia Wang
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ruimei Wu
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaomin Yu
- Center for Plant Metabolomics, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Zannino L, Carelli M, Milanesi G, Croce AC, Biggiogera M, Confalonieri M. Histochemical and ultrastructural localization of triterpene saponins in Medicago truncatula. Microsc Res Tech 2024. [PMID: 38706034 DOI: 10.1002/jemt.24591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/26/2024] [Accepted: 04/20/2024] [Indexed: 05/07/2024]
Abstract
In the Medicago genus, saponins are complex mixtures of triterpene pentacyclic glycosides extensively studied for their different and economically relevant biological and pharmaceutical properties. This research is aimed at determining for the first time the tissue and cellular localization of triterpene saponins in vegetative organs of Medicago truncatula, a model plant species for legumes, by histochemistry and transmission electron microscopy. The results showed that saponins are present mainly in the palisade mesophyll layer of leaves, whereas in stems they are mostly located in the primary phloem and the subepidermal cells of cortical parenchyma. In root tissue, saponins occur in the secondary phloem region. Transmission electron microscopy revealed prominent saponin accumulation within the leaf and stem chloroplasts, while in the roots the saponins are found in the vesicular structures. Our results demonstrate the feasibility of using histochemistry and transmission electron microscopy to localize M. truncatula saponins at tissue and cellular levels and provide important information for further studies on biosynthesis and regulation of valuable bioactive saponins on agronomic relevant Medicago spp., such as alfalfa (Medicago sativa L.). RESEARCH HIGHLIGHTS: The Medicago genus represents a valuable rich source of saponins, one of the most interesting groups of secondary plant metabolites, which possess relevant biological and pharmacological properties. Plant tissue and cellular localization of saponins is of great importance to better understand their biological functions, biosynthetic pathway, and regulatory mechanisms. We elucidate the localization of saponins in Medicago truncatula with histochemical and transmission electron microscopy studies.
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Affiliation(s)
- Lorena Zannino
- Department of Biology and Biotechnology "Lazzaro Spallanzani", Laboratory of Cell Biology and Neurobiology, University of Pavia, Pavia, Italy
| | - Maria Carelli
- Council for Agricultural Research and Economics (CREA), Research Centre for Animal Production and Aquaculture (CREA-ZA), Lodi, Italy
| | - Gloria Milanesi
- Department of Biology and Biotechnology "Lazzaro Spallanzani", Laboratory of Cell Biology and Neurobiology, University of Pavia, Pavia, Italy
| | - Anna Cleta Croce
- Institute of Molecular Genetics, Italian National Research Council (CNR), c/o Department of Biology and Biotechnology "Lazzaro Spallanzani", University of Pavia, Pavia, Italy
| | - Marco Biggiogera
- Department of Biology and Biotechnology "Lazzaro Spallanzani", Laboratory of Cell Biology and Neurobiology, University of Pavia, Pavia, Italy
| | - Massimo Confalonieri
- Council for Agricultural Research and Economics (CREA), Research Centre for Animal Production and Aquaculture (CREA-ZA), Lodi, Italy
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Farimani MM, Abbas-Mohammadi M, Ghorbannia-Dellavar S, Nejad-Ebrahimi S, Hamburger M. Purification, Molecular Docking and Cytotoxicity Evaluation of Bioactive Pentacyclic Polyhydroxylated Triterpenoids from Salvia urmiensis. PLANTA MEDICA 2024; 90:482-490. [PMID: 38219732 DOI: 10.1055/a-2244-8706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Triterpenoids, as one of the largest classes of naturally occurring secondary metabolites in higher plants, are of interest due to their high structural diversity and wide range of biological activities. In addition to several promising pharmacological activities such as antimicrobial, antiviral, antioxidant, anti-inflammatory and hepatoprotective effects, a large number of triterpenoids have revealed high potential for cancer therapy through their strong cytotoxicity on cancer cell lines and, also, low toxicity in normal cells. So, this study was aimed at discovering novel and potentially bioactive triterpenoids from the Salvia urmiensis species. For this, an ethyl acetate fraction of the acetone extract of the aerial parts of the plant was chromatographed to yield five novel polyhydroxylated triterpenoids (1: -5: ). Their structure was elucidated by extensive spectroscopic methods including 1D (1H, 13C, DEPT-Q) and 2D NMR (COSY, HSQC, HMBC, NOESY) experiments, as well as HRESIMS analysis. Cytotoxic activity of the purified compounds was also investigated by MTT assay against the MCF-7 cancer cell line. Furthermore, a molecular docking analysis was applied to evaluate the inhibition potential of the ligands against the nuclear factor kappa B (NF-κB) protein, which promotes tumor metastasis or affects gene expression in cancer disease. The 1β,11β,22α-trihydroxy-olean-12-ene-3-one (compound 4: ) indicated the best activity in both in vitro and in silico assays, with an IC50 value of 32 µM and a docking score value of - 3.976 kcal/mol, respectively.
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Affiliation(s)
- Mahdi Moridi Farimani
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
| | - Mahdi Abbas-Mohammadi
- Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, Iran
| | - Samira Ghorbannia-Dellavar
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
- Traditional Medicine and History of Medical Sciences Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
| | - Samad Nejad-Ebrahimi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
| | - Matthias Hamburger
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
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Hekmati Z, Solouki M, Emamjomeh A, Zahiri J, Mirzaie-Asl A. Transcriptomic Analysis of Cyclamen persicum to Identify Invovled Genes in Triterpene Secondary Metabolites Pathway. Biochem Genet 2024:10.1007/s10528-024-10745-1. [PMID: 38578589 DOI: 10.1007/s10528-024-10745-1] [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: 09/20/2023] [Accepted: 02/16/2024] [Indexed: 04/06/2024]
Abstract
Saponins are considered as a diverse group of natural active compounds, which are widely found in crops. Mevalonate pathway (MVA) is regarded as the main pathway for synthesis of saponins in crops. This study aims to compare transcriptome of the leaf with tuber of crop including tubers and roots. First, more than 166 million reads were generated. The existence of 36,678 unigenes in the two samples out of 48,936 assembled ones showed a significant difference in expression. Finally, 310 and 290 highly up-regulated genes in leaf and tuber were selected for the next analysis. In addition, the expression profiles of 13 key genes in the MVA pathway were compared in RNA sequencing and reverse transcription-quantitative polymerase chain reaction analysis. The results indicated that cyclamen tuber has a higher level of expression of MVA pathway genes. The topological analysis for gene co-expression network involved in triterpenoid synthesis represented that the genes at the beginning of such pathway play a critical role so that the reduction of their expression challenges triterpenoid synthesis severely. The tuber of the cyclamen appears to be the major site of triterpene synthesis, and transfer of excess Isopentenyl pyrophosphate (IPP) from tuber to leaf activates downstream genes in leaf of crop.
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Affiliation(s)
- Zahra Hekmati
- Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Daneshgah Blvd., Zabol, Iran
| | - Mahmood Solouki
- Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Daneshgah Blvd., Zabol, Iran.
| | - Abbasali Emamjomeh
- Department of Plant Breeding and Biotechnology (PBB), Faculty of Agriculture, University of Zabol, Daneshgah Blvd., Zabol, Iran.
- Laboratory of Computational Biotechnology and Bioinformatics (CBB Lab), Department of Bioinformatics, University of Zabol, Zabol, Iran.
| | - Javad Zahiri
- Department of Neuroscience, University of California, San Diego, San Diego, CA, USA
| | - Asghar Mirzaie-Asl
- Department of Agricultural Biotechnology, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
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de Aguiar NS, Hansel FA, Reis CAF, Lazzarotto M, Wendling I. Optimizing the Vanillin-Acid Sulfuric Method to Total Saponin Content in Leaves of Yerba Mate Clones. Chem Biodivers 2024; 21:e202301883. [PMID: 38358959 DOI: 10.1002/cbdv.202301883] [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: 11/25/2023] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/17/2024]
Abstract
Yerba mate (Ilex paraguariensis) is a forest species consumed in the form of non-alcoholic beverages in South America, with applications in foods, cosmetics, and pharmaceutical industries. The species leaves are globally recognized for their important bioactive compounds, including, saponins. We adjusted the vanillin-acid sulfuric method for determining spectrophotometrically the total saponin in yerba mate leaves. Seeking to maximize the extraction of saponins from leaves, a Doehlert design combined with Response Surface Methodology (RSM) was used, considering ethanol:water ratios and ultrasound times. In addition, the same methodology was used for the analysis of times and temperatures in the vanillin-sulfuric acid reaction heating. The contents of total saponin in mature leaves were compared in four yerba mate clones. The extraction was maximized using 40 % ethanol:60 % water and 60 minutes of ultrasound assisted extraction (UAE) without heating. For the reaction conditions, 70 °C for 10 minutes heating is recommended, and UV/Vis reading from 460 to 680 nm. Using the optimized methodology, total saponin contents ranged from 28.43 to 53.09 mg g-1 in the four yerba mate clones. The significant difference in saponin contents between clones indicate great genetic diversity and potential for clones' selection and extraction of these compounds from yerba mate leaves.
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Affiliation(s)
- Natalia Saudade de Aguiar
- Federal University of Paraná (UFPR), Departament of Forest Science, Curitiba, Paraná, Brazil, 80210-170
| | - Fabricio Augusto Hansel
- Brazilian Agricultural Research Corporation, Embrapa Forestry, Colombo, Paraná, Brazil, 83411-000
| | | | - Marcelo Lazzarotto
- Brazilian Agricultural Research Corporation, Embrapa Grape and Wine, Bento Gonçalves, Rio Grande do Sul, Brazil, 95701-008
| | - Ivar Wendling
- Federal University of Paraná (UFPR), Departament of Forest Science, Curitiba, Paraná, Brazil, 80210-170
- Brazilian Agricultural Research Corporation, Embrapa Forestry, Colombo, Paraná, Brazil, 83411-000
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Wijesekara T, Luo J, Xu B. Critical review on anti-inflammation effects of saponins and their molecular mechanisms. Phytother Res 2024; 38:2007-2022. [PMID: 38372176 DOI: 10.1002/ptr.8164] [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: 11/29/2023] [Revised: 01/30/2024] [Accepted: 02/03/2024] [Indexed: 02/20/2024]
Abstract
This review highlights the increasing interest in one of the natural compounds called saponins, for their potential therapeutic applications in addressing inflammation which is a key factor in various chronic diseases. It delves into the molecular mechanisms responsible for the anti-inflammatory effects of these amphiphilic compounds, prevalent in plant-based foods and marine organisms. Their structures vary with soap-like properties influencing historical uses in traditional medicine and sparking renewed scientific interest. Recent research focuses on their potential in chronic inflammatory diseases, unveiling molecular actions such as NF-κB and MAPK pathway regulation and COX/LOX enzyme inhibition. Saponin-containing sources like Panax ginseng and soybeans suggest novel anti-inflammatory therapies. The review explores their emerging role in shaping the gut microbiome, influencing composition and activity, and contributing to anti-inflammatory effects. Specific examples, such as Panax notoginseng and Gynostemma pentaphyllum, illustrate the intricate relationship between saponins, the gut microbiome, and their collective impact on immune regulation and metabolic health. Despite promising findings, the review emphasizes the need for further research to comprehend the mechanisms behind anti-inflammatory effects and their interactions with the gut microbiome, underscoring the crucial role of a balanced gut microbiome for optimal health and positioning saponins as potential dietary interventions for managing chronic inflammatory conditions.
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Affiliation(s)
- Tharuka Wijesekara
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai, Guangdong, China
- Department of Food Science and Technology, University of Peradeniya, Peradeniya, Sri Lanka
| | - Jinhai Luo
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai, Guangdong, China
| | - Baojun Xu
- Food Science and Technology Program, Department of Life Sciences, BNU-HKBU United International College, Zhuhai, Guangdong, China
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10
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Li Z, Li Y, Geng L, Wang J, Ouyang Y, Li J. Genome-wide methylation, transcriptome and characteristic metabolites reveal the balance between diosgenin and brassinosteroids in Dioscorea zingiberensis. HORTICULTURE RESEARCH 2024; 11:uhae056. [PMID: 38659444 PMCID: PMC11040209 DOI: 10.1093/hr/uhae056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 02/14/2024] [Indexed: 04/26/2024]
Abstract
Diosgenin (DG) is a bioactive metabolite isolated from Dioscorea species, renowned for its medicinal properties. Brassinosteroids (BRs) are a class of crucial plant steroidal hormones. Cholesterol and campesterol are important intermediates of DG and BR biosynthesis, respectively. DG and BRs are structurally similar components; however, the regulatory network and metabolic interplays have not been fully elucidated. In an effort to decode these complex networks, we conducted a comprehensive study integrating genome-wide methylation, transcriptome and characteristic metabolite data from Dioscorea zingiberensis. Leveraging these data, we were able to construct a comprehensive regulatory network linking DG and BRs. Mass spectrometry results enabled us to clarify the alterations in cholesterol, campesterol, diosgenin, and castasterone (one of the major active BRs). The DG content decreased by 27.72% at 6 h after brassinolide treatment, whereas the content increased by 85.34% at 6 h after brassinazole treatment. Moreover, we pinpointed DG/BR-related genes, such as CASs, CYP90s, and B3-ARFs, implicated in the metabolic pathways of DG and BRs. Moreover, CASs and CYP90s exhibit hypomethylation, which is closely related to their high transcription. These findings provide robust evidence for the homeostasis between DG and BRs. In conclusion, our research revealed the existence of a balance between DG and BRs in D. zingiberensis. Furthermore, our work not only provides new insights into the relationship between the two pathways but also offers a fresh perspective on the functions of secondary metabolites.
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Affiliation(s)
- Zihao Li
- State Key Laboratory of Hybrid Rice, College Life Sciences, Wuhan University, Wuhan 430072, China
| | - Yi Li
- State Key Laboratory of Hybrid Rice, College Life Sciences, Wuhan University, Wuhan 430072, China
| | - Luyu Geng
- State Key Laboratory of Hybrid Rice, College Life Sciences, Wuhan University, Wuhan 430072, China
| | - Jiachen Wang
- State Key Laboratory of Hybrid Rice, College Life Sciences, Wuhan University, Wuhan 430072, China
| | - Yidan Ouyang
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research (Wuhan), Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Jiaru Li
- State Key Laboratory of Hybrid Rice, College Life Sciences, Wuhan University, Wuhan 430072, China
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Chen Y, Lafleur C, Smith RJ, Kaur D, Driscoll BT, Bede JC. Trichoplusia ni Transcriptomic Responses to the Phytosaponin Aglycone Hederagenin: Sex-Related Differences. J Chem Ecol 2024; 50:168-184. [PMID: 38443712 DOI: 10.1007/s10886-024-01482-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 02/08/2024] [Accepted: 02/18/2024] [Indexed: 03/07/2024]
Abstract
Many plant species, particularly legumes, protect themselves with saponins. Previously, a correlation was observed between levels of oleanolic acid-derived saponins, such as hederagenin-derived compounds, in the legume Medicago truncatula and caterpillar deterrence. Using concentrations that reflect the foliar levels of hederagenin-type saponins, the sapogenin hederagenin was not toxic to 4th instar caterpillars of the cabbage looper Trichoplusia ni nor did it act as a feeding deterrent. Female caterpillars consumed more diet than males, presumably to obtain the additional nutrients required for oogenesis, and are, thus, exposed to higher hederagenin levels. When fed the hederagenin diet, male caterpillars expressed genes encoding trypsin-like proteins (LOC113500509, LOC113501951, LOC113501953, LOC113501966, LOC113501965, LOC113499659, LOC113501950, LOC113501948, LOC113501957, LOC113501962, LOC113497819, LOC113501946, LOC113503910) as well as stress-responsive (LOC113503484, LOC113505107) proteins and cytochrome P450 6B2-like (LOC113493761) at higher levels than females. In comparison, female caterpillars expressed higher levels of cytochrome P450 6B7-like (LOC113492289). Bioinformatic tools predict that cytochrome P450s could catalyze the oxygenation of hederagenin which would increase the hydrophilicity of the compound. Expression of a Major Facilitator Subfamily (MFS) transporter (LOC113492899) showed a hederagenin dose-dependent increase in gene expression suggesting that this transporter may be involved in sapogenin efflux. These sex-related differences in feeding and detoxification should be taken into consideration in insecticide evaluations to minimize pesticide resistance.
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Affiliation(s)
- Yinting Chen
- Department of Plant Science, McGill University, 21,111 Lakeshore, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Christine Lafleur
- Department of Animal Science, McGill University, 21,111 Lakeshore, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Ryan J Smith
- Department of Plant Science, McGill University, 21,111 Lakeshore, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Diljot Kaur
- Department of Plant Science, McGill University, 21,111 Lakeshore, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Brian T Driscoll
- Natural Resource Sciences, McGill University, 21,111 Lakeshore, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Jacqueline C Bede
- Department of Plant Science, McGill University, 21,111 Lakeshore, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada.
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12
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Jolly A, Hour Y, Lee YC. An outlook on the versatility of plant saponins: A review. Fitoterapia 2024; 174:105858. [PMID: 38365071 DOI: 10.1016/j.fitote.2024.105858] [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: 10/10/2023] [Revised: 02/08/2024] [Accepted: 02/11/2024] [Indexed: 02/18/2024]
Abstract
The abundance of saponin-rich plants across different ecosystems indicates their great potential as a replacement for harmful synthetic surfactants in modern commercial products. These organic saponins have remarkable biological and surface-active properties and align with sustainable and eco-friendly practices. This article examines and discusses the structure and properties of plant saponins with high yield of saponin concentrations and their exploitable applications. This highlights the potential of saponins as ethical substitutes for traditional synthetic surfactants and pharmacological agents, with favorable effects on the economy and environment. For this purpose, studies on the relevant capabilities, structure, and yield of selected plants were thoroughly examined. Studies on the possible uses of the selected saponins have also been conducted. This in-depth analysis highlights the potential of saponins as workable and ethical replacements for traditional synthetic medications and surfactants, thus emphasizing their favorable effects on human health and the environment.
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Affiliation(s)
- Annu Jolly
- Department of BioNanotechnology, Gachon University, 1342 Seongnam-Daero, Sujeon-Gu, Seongnam-Si, Gyeonggi-Do 13120, Republic of Korea
| | - Youl Hour
- 125-6, Techno 2-ro, Yuseong-gu, Daejeon 34024, BTGin co., Ltd., Republic of Korea.
| | - Young-Chul Lee
- Department of BioNanotechnology, Gachon University, 1342 Seongnam-Daero, Sujeon-Gu, Seongnam-Si, Gyeonggi-Do 13120, Republic of Korea.
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13
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Mensah RQ, Adusei S, Azupio S, Kwakye R. Nutritive value, biological properties, health benefits and applications of Tetrapleura tetraptera: An updated comprehensive review. Heliyon 2024; 10:e27834. [PMID: 38515660 PMCID: PMC10955287 DOI: 10.1016/j.heliyon.2024.e27834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 03/05/2024] [Accepted: 03/07/2024] [Indexed: 03/23/2024] Open
Abstract
Due to the health benefits that medicinal plants present, they are applied in traditional healthcare in developing and developed countries alike. Tetrapleura tetraptera, a flowering plant mostly found in the western part of Africa has an essential chemical composition that gives it nutritive value and medicinal capacities. This review aims to highlight the nutritional attributes, biological properties, health benefits, and applications of T. tetraptera. The fruit of the plant has been revealed to possess about 58.48-63. 86% carbohydrates, 251.22-288.62 mg/g potassium, 182.11-200.02 mg/g calcium, 322.00-342.00 mg/g manganese, and 0.02-4.69 mg/g vitamins. Also, active phytochemical compounds including phenols (3.51 ± 0.03 mgGAE/g), flavonoids (0.87 ± 0.03 mgQE/g), saponins (4.27 ± 0.03 mgDE/g), tannins (23.87 ± 0.44 mg/100 g), and alkaloids (5.03 ± 0.15% w/w) have been discovered in the fruit of T. tetraptera. The plant's abundant phytochemicals account for its antioxidant, antimicrobial, anti-inflammatory, anti-diabetic, anti-parasitic, and anti-proliferative activities. These biological properties in turn translate to health benefits including lower blood pressure, enhanced immune system, malaria treatment, diabetes and hypertension management, and cancer prevention. The health-promoting assets of T. tetraptera underscore its applications in beverage production, food preservation and flavoring, feed supplementation, and pharmaceutical formulations. The data gathered in this piece is crucial for industrial food processing and the creation of potent pharmaceutical products and functional foods with superior health attributes.
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Affiliation(s)
- Richard Q. Mensah
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand
| | - Stephen Adusei
- Value Addition Division, Council for Scientific and Industrial Research - Oil Palm Research Institute, Kade, Ghana
| | - Samuel Azupio
- Plant Pathology Unit, Council for Scientific and Industrial Research - Oil Palm Research Institute, Kade, Ghana
| | - Richmond Kwakye
- Department of Microbiology and Immunology, College of Health and Allied Sciences, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana
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Muhammad M, Basit A, Ali K, Ahmad H, Li WJ, Khan A, Mohamed HI. A review on endophytic fungi: a potent reservoir of bioactive metabolites with special emphasis on blight disease management. Arch Microbiol 2024; 206:129. [PMID: 38416214 DOI: 10.1007/s00203-023-03828-x] [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: 11/15/2023] [Accepted: 12/30/2023] [Indexed: 02/29/2024]
Abstract
Phytopathogenic microorganisms have caused blight diseases that present significant challenges to global agriculture. These diseases result in substantial crop losses and have a significant economic impact. Due to the limitations of conventional chemical treatments in effectively and sustainably managing these diseases, there is an increasing interest in exploring alternative and environmentally friendly approaches for disease control. Using endophytic fungi as biocontrol agents has become a promising strategy in recent years. Endophytic fungi live inside plant tissues, forming mutually beneficial relationships, and have been discovered to produce a wide range of bioactive metabolites. These metabolites demonstrate significant potential for fighting blight diseases and provide a plentiful source of new biopesticides. In this review, we delve into the potential of endophytic fungi as a means of biocontrol against blight diseases. We specifically highlight their significance as a source of biologically active compounds. The review explores different mechanisms used by endophytic fungi to suppress phytopathogens. These mechanisms include competing for nutrients, producing antifungal compounds, and triggering plant defense responses. Furthermore, this review discusses the challenges of using endophytic fungi as biocontrol agents in commercial applications. It emphasizes the importance of conducting thorough research to enhance their effectiveness and stability in real-world environments. Therefore, bioactive metabolites from endophytic fungi have considerable potential for sustainable and eco-friendly blight disease control. Additional research on endophytes and their metabolites will promote biotechnology solutions.
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Affiliation(s)
- Murad Muhammad
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Abdul Basit
- Department of Horticultural Science, Kyungpook National University, Daegu, 41566, Korea
| | - Kashif Ali
- Center of Biotechnology and Microbiology, University of Peshawar, Peshawar, 25120, Pakistan
| | - Haris Ahmad
- Center of Biotechnology and Microbiology, University of Peshawar, Peshawar, 25120, Pakistan
| | - Wen-Jun Li
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, People's Republic of China
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, People's Republic of China
| | - Ayesha Khan
- Department of Horticulture, Faculty of Crop Production Sciences, The University of Agriculture, Peshawar, 25120, Pakistan
| | - Heba I Mohamed
- Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Cairo, 11341, Egypt.
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15
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De Rouck S, Mocchetti A, Dermauw W, Van Leeuwen T. SYNCAS: Efficient CRISPR/Cas9 gene-editing in difficult to transform arthropods. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2024; 165:104068. [PMID: 38171463 DOI: 10.1016/j.ibmb.2023.104068] [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: 12/06/2023] [Revised: 12/22/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024]
Abstract
The genome editing technique CRISPR/Cas9 has led to major advancements in many research fields and this state-of-the-art tool has proven its use in genetic studies for various arthropods. However, most transformation protocols rely on microinjection of CRISPR/Cas9 components into embryos, a method which is challenging for many species. Alternatively, injections can be performed on adult females, but transformation efficiencies can be very low as was shown for the two-spotted spider mite, Tetranychus urticae, a minute but important chelicerate pest on many crops. In this study, we explored different CRISPR/Cas9 formulations to optimize a maternal injection protocol for T. urticae. We observed a strong synergy between branched amphipathic peptide capsules and saponins, resulting in a significant increase of CRISPR/Cas9 knock-out efficiency, exceeding 20%. This CRISPR/Cas9 formulation, termed SYNCAS, was used to knock-out different T. urticae genes - phytoene desaturase, CYP384A1 and Antennapedia - but also allowed to develop a co-CRISPR strategy and facilitated the generation of T. urticae knock-in mutants. In addition, SYNCAS was successfully applied to knock-out white and white-like genes in the western flower thrips, Frankliniella occidentalis. The SYNCAS method allows routine genome editing in these species and can be a game changer for genetic research in other hard to transform arthropods.
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Affiliation(s)
- Sander De Rouck
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Belgium
| | - Antonio Mocchetti
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Belgium
| | - Wannes Dermauw
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Belgium.
| | - Thomas Van Leeuwen
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Belgium.
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16
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Zhou Q, Sun P, Xiong HM, Xie J, Zhu GY, Tantillo DJ, Huang AC. Insight into neofunctionalization of 2,3-oxidosqualene cyclases in B,C-ring-opened triterpene biosynthesis in quinoa. THE NEW PHYTOLOGIST 2024; 241:764-778. [PMID: 37904576 DOI: 10.1111/nph.19345] [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: 12/16/2022] [Accepted: 10/04/2023] [Indexed: 11/01/2023]
Abstract
Bioactive triterpenes feature complex fused-ring structures, primarily shaped by the first-committed enzyme, 2,3-oxidosqualene cyclases (OSCs) in plant triterpene biosynthesis. Triterpenes with B,C-ring-opened skeletons are extremely rare with unknown formation mechanisms, harbouring unchartered chemistry and biology. Here, through mining the genome of Chenopodium quinoa followed by functional characterization, we identified a stress-responsive and neofunctionalized OSC capable of generating B,C-ring-opened triterpenes, including camelliol A and B and the novel (-)-quinoxide A as wax components of the specialized epidermal bladder cells, namely the quinoxide synthase (CqQS). Protein structure analysis followed by site-directed mutagenesis identified key variable amino acid sites underlying functional interconversion between pentacyclic β-amyrin synthase (CqbAS1) and B,C-ring-opened triterpene synthase CqQS. Mutation of one key residue (N612K) in even evolutionarily distant Arabidopsis β-amyrin synthase could generate quinoxides, indicating a conserved mechanism for B,C-ring-opened triterpene formation in plants. Quantum computation combined with docking experiments further suggests that conformations of conserved W613 and F413 of CqQS might be key to selectively stabilizing intermediate carbocations towards B,C-ring-opened triterpene formation. Our findings shed light on quinoa triterpene skeletal diversity and mechanisms underlying B,C-ring-opened triterpene biosynthesis, opening avenues towards accessing their chemistry and biology and paving the way for quinoa trait engineering and quality improvement.
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Affiliation(s)
- Qian Zhou
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, SUSTech-PKU Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Peng Sun
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, SUSTech-PKU Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Hao-Ming Xiong
- State Key Laboratory of Quality Research in Chinese Medicine, Guangdong-Hong Kong-Macao Joint Laboratory of Respiratory Infectious Disease, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, 999078, China
| | - Jiali Xie
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, SUSTech-PKU Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Guo-Yuan Zhu
- State Key Laboratory of Quality Research in Chinese Medicine, Guangdong-Hong Kong-Macao Joint Laboratory of Respiratory Infectious Disease, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, 999078, China
| | - Dean J Tantillo
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Ancheng C Huang
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, SUSTech-PKU Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
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17
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Lu J, Yao J, Pu J, Wang D, Liu J, Zhang Y, Zha L. Transcriptome analysis of three medicinal plants of the genus Polygonatum: identification of genes involved in polysaccharide and steroidal saponins biosynthesis. FRONTIERS IN PLANT SCIENCE 2023; 14:1293411. [PMID: 38046616 PMCID: PMC10691381 DOI: 10.3389/fpls.2023.1293411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/30/2023] [Indexed: 12/05/2023]
Abstract
Polysaccharides and saponins are the main active components of Polygonati Rhizoma. Studying the molecular mechanism of their synthesis pathway is helpful in improving the content of active components at the molecular level. At present, transcriptome analysis of three Polygonatum species (Polygonatum sibiricum Red., Polygonatum cyrtonema Hua, Polygonatum kingianum Coll. et Hemsl.) has been reported, but no comparative study has been found on the transcriptome data of the three species. Transcriptome sequencing was performed on the rhizomes of three Polygonatum species based on high-throughput sequencing technology, and all transcripts were assembled. A total of 168,108 unigenes were generated after the removal of redundancy, of which 121,642 were annotated in seven databases. Through differential analysis and expression analysis of key enzyme genes in the synthesis pathway of three Polygonatum polysaccharides and steroidal saponins, 135 differentially expressed genes encoding 18 enzymes and 128 differentially expressed genes encoding 28 enzymes were identified, respectively. Numerous transcription factors are involved in the carbohydrate synthesis pathway. Quantitative real-time PCR was used to further verify the gene expression level. In this paper, we present a public transcriptome dataset of three medicinal plants of the genus Polygonatum, and analyze the key enzyme genes of polysaccharide and steroidal saponins synthesis pathway, which lays a foundation for improving the active component content of Polygonati Rhizoma by molecular means.
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Affiliation(s)
- Jimei Lu
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Jinchen Yao
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Jingzhe Pu
- Anhui Institute for Food and Drug Control, Hefei, China
| | - Duomei Wang
- Anhui Institute for Food and Drug Control, Hefei, China
| | - Junling Liu
- Anhui Institute for Food and Drug Control, Hefei, China
| | - Yazhong Zhang
- Anhui Institute for Food and Drug Control, Hefei, China
| | - Liangping Zha
- College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
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18
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Chen X, Hudson GA, Mineo C, Amer B, Baidoo EEK, Crowe SA, Liu Y, Keasling JD, Scheller HV. Deciphering triterpenoid saponin biosynthesis by leveraging transcriptome response to methyl jasmonate elicitation in Saponaria vaccaria. Nat Commun 2023; 14:7101. [PMID: 37925486 PMCID: PMC10625584 DOI: 10.1038/s41467-023-42877-0] [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: 04/04/2023] [Accepted: 10/24/2023] [Indexed: 11/06/2023] Open
Abstract
Methyl jasmonate (MeJA) is a known elicitor of plant specialized metabolism, including triterpenoid saponins. Saponaria vaccaria is an annual herb used in traditional Chinese medicine, containing large quantities of oleanane-type triterpenoid saponins with anticancer properties and structural similarities to the vaccine adjuvant QS-21. Leveraging the MeJA-elicited saponin biosynthesis, we identify multiple enzymes catalyzing the oxidation and glycosylation of triterpenoids in S. vaccaria. This exploration is aided by Pacbio full-length transcriptome sequencing and gene expression analysis. A cellulose synthase-like enzyme can not only glucuronidate triterpenoid aglycones but also alter the product profile of a cytochrome P450 monooxygenase via preference for the aldehyde intermediate. Furthermore, the discovery of a UDP-glucose 4,6-dehydratase and a UDP-4-keto-6-deoxy-glucose reductase reveals the biosynthetic pathway for the rare nucleotide sugar UDP-D-fucose, a likely sugar donor for fucosylation of plant natural products. Our work enables the production and optimization of high-value saponins in microorganisms and plants through synthetic biology approaches.
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Affiliation(s)
- Xiaoyue Chen
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Graham A Hudson
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
| | - Charlotte Mineo
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA
| | - Bashar Amer
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Edward E K Baidoo
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Samantha A Crowe
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
- Department of Chemical & Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
| | - Yuzhong Liu
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
| | - Jay D Keasling
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA
- California Institute of Quantitative Biosciences (QB3), University of California, Berkeley, CA, 94720, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA
- Department of Chemical & Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
- Department of Bioengineering, University of California, Berkeley, CA, 94720, USA
- Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark
- Center for Synthetic Biochemistry, Shenzhen Institutes for Advanced Technologies, Shenzhen, China
| | - Henrik V Scheller
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA.
- Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA, 94608, USA.
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA, 94720, USA.
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Yuan J, Ma L, Wang Y, Xu X, Zhang R, Wang C, Meng W, Tian Z, Zhou Y, Wang G. A recently evolved BAHD acetyltransferase, responsible for bitter soyasaponin A production, is indispensable for soybean seed germination. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:2490-2504. [PMID: 37548097 DOI: 10.1111/jipb.13553] [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: 06/16/2023] [Accepted: 08/04/2023] [Indexed: 08/08/2023]
Abstract
Soyasaponins are major small molecules that accumulate in soybean (Glycine max) seeds. Among them, type-A soyasaponins, fully acetylated at the terminal sugar of their C22 sugar chain, are responsible for the bitter taste of soybean-derived foods. However, the molecular basis for the acetylation of type-A soyasaponins remains unclear. Here, we identify and characterize GmSSAcT1, encoding a BADH-type soyasaponin acetyltransferase that catalyzes three or four consecutive acetylations on type-A soyasaponins in vitro and in planta. Phylogenetic analysis and biochemical assays suggest that GmSSAcT1 likely evolved from acyltransferases present in leguminous plants involved in isoflavonoid acylation. Loss-of-function mutants of GmSSAcT1 exhibited impaired seed germination, which attribute to the excessive accumulation of null-acetylated type-A soyasaponins. We conclude that GmSSAcT1 not only functions as a detoxification gene for high accumulation of type-A soyasaponins in soybean seeds but is also a promising target for breeding new soybean varieties with lower bitter soyasaponin content.
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Affiliation(s)
- Jia Yuan
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
| | - Liya Ma
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
| | - Yan Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
| | - Xindan Xu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Rui Zhang
- State Key Laboratory of Molecular Developmental Biology, the Chinese Academy of Sciences, Beijing, 100190, China
| | - Chengyuan Wang
- The Center for Microbes, Development and Health, Institute of Pasteur of Shanghai, the Chinese Academy of Sciences, Shanghai, 200031, China
| | - Wenxiang Meng
- State Key Laboratory of Molecular Developmental Biology, the Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhixi Tian
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100039, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
| | - Yihua Zhou
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Guodong Wang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100039, China
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20
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Li Y, Li Z, Zhang F, Li S, Gu Y, Tian W, Tian W, Wang J, Wen J, Li J. Integrated evolutionary pattern analyses reveal multiple origins of steroidal saponins in plants. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:823-839. [PMID: 37522396 DOI: 10.1111/tpj.16411] [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: 09/05/2022] [Revised: 07/19/2023] [Accepted: 07/22/2023] [Indexed: 08/01/2023]
Abstract
Steroidal saponins are a class of specialized metabolites essential for plant's response to biotic and abiotic stresses. They are also important raw materials for the industrial production of steroid drugs. Steroidal saponins are present in some monocots, such as Dioscorea and Paris, but their distribution, origin, and evolution in plants remain poorly understood. By reconstructing the evolutionary history of the steroidal saponin-associated module (SSAM) in plants, we reveal that the steroidal saponin pathway has its origin in Asparagus and Dioscorea. Through evaluating the distribution and evolutionary pattern of steroidal saponins in angiosperms, we further show that steroidal saponins originated multiple times in angiosperms, and exist in early diverged lineages of certain monocot lineages including Asparagales, Dioscoreales, and Liliales. In these lineages, steroidal saponins are synthesized through the high copy and/or high expression mechanisms of key genes in SSAM. Together with shifts in gene evolutionary rates and amino acid usage, these molecular mechanisms shape the current distribution and diversity of steroidal saponins in plants. Consequently, our results provide new insights into the distribution, diversity and evolutionary history of steroidal saponins in plants, and enhance our understanding of plants' resistance to abiotic and biotic stresses. Additionally, fundamental understanding of the steroidal saponin biosynthesis will facilitate their industrial production and pharmacological applications.
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Affiliation(s)
- Yi Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Zihao Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Furui Zhang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Song Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Yongbing Gu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Weijun Tian
- Yunnan Baotian Agricultural Technology Co., Ltd, Kunming, 650101, China
| | - Weirong Tian
- Yunnan Baotian Agricultural Technology Co., Ltd, Kunming, 650101, China
| | - Jianbo Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Jun Wen
- Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, 20013-7012, DC, USA
| | - Jiaru Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
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21
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Dinday S, Ghosh S. Recent advances in triterpenoid pathway elucidation and engineering. Biotechnol Adv 2023; 68:108214. [PMID: 37478981 DOI: 10.1016/j.biotechadv.2023.108214] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/23/2023]
Abstract
Triterpenoids are among the most assorted class of specialized metabolites found in all the taxa of living organisms. Triterpenoids are the leading active ingredients sourced from plant species and are utilized in pharmaceutical and cosmetic industries. The triterpenoid precursor 2,3-oxidosqualene, which is biosynthesized via the mevalonate (MVA) pathway is structurally diversified by the oxidosqualene cyclases (OSCs) and other scaffold-decorating enzymes such as cytochrome P450 monooxygenases (P450s), UDP-glycosyltransferases (UGTs) and acyltransferases (ATs). A majority of the bioactive triterpenoids are harvested from the native hosts using the traditional methods of extraction and occasionally semi-synthesized. These methods of supply are time-consuming and do not often align with sustainability goals. Recent advancements in metabolic engineering and synthetic biology have shown prospects for the green routes of triterpenoid pathway reconstruction in heterologous hosts such as Escherichia coli, Saccharomyces cerevisiae and Nicotiana benthamiana, which appear to be quite promising and might lead to the development of alternative source of triterpenoids. The present review describes the biotechnological strategies used to elucidate complex biosynthetic pathways and to understand their regulation and also discusses how the advances in triterpenoid pathway engineering might aid in the scale-up of triterpenoid production in engineered hosts.
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Affiliation(s)
- Sandeep Dinday
- CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, Uttar Pradesh, India; School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana 141004, Punjab, India
| | - Sumit Ghosh
- CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, Uttar Pradesh, India; Academy of Scientific and Innovative Research, Ghaziabad 201002, Uttar Pradesh, India.
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22
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Nakayasu M, Takamatsu K, Kanai K, Masuda S, Yamazaki S, Aoki Y, Shibata A, Suda W, Shirasu K, Yazaki K, Sugiyama A. Tomato root-associated Sphingobium harbors genes for catabolizing toxic steroidal glycoalkaloids. mBio 2023; 14:e0059923. [PMID: 37772873 PMCID: PMC10653915 DOI: 10.1128/mbio.00599-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 08/08/2023] [Indexed: 09/30/2023] Open
Abstract
IMPORTANCE Saponins are a group of plant specialized metabolites with various bioactive properties, both for human health and soil microorganisms. Our previous works demonstrated that Sphingobium is enriched in both soils treated with a steroid-type saponin, such as tomatine, and in the tomato rhizosphere. Despite the importance of saponins in plant-microbe interactions in the rhizosphere, the genes involved in the catabolism of saponins and their aglycones (sapogenins) remain largely unknown. Here we identified several enzymes that catalyzed the degradation of steroid-type saponins in a Sphingobium isolate from tomato roots, RC1. A comparative genomic analysis of Sphingobium revealed the limited distribution of genes for saponin degradation in our saponin-degrading isolates and several other isolates, suggesting the possible involvement of the saponin degradation pathway in the root colonization of Sphingobium spp. The genes that participate in the catabolism of sapogenins could be applied to the development of new industrially valuable sapogenin molecules.
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Affiliation(s)
- Masaru Nakayasu
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto, Japan
| | - Kyoko Takamatsu
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto, Japan
| | - Keiko Kanai
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto, Japan
| | - Sachiko Masuda
- Plant Immunity Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, Japan
| | - Shinichi Yamazaki
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Yuichi Aoki
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
- Graduate School of Information Sciences, Tohoku University, Sendai, Miyagi, Japan
| | - Arisa Shibata
- Plant Immunity Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, Japan
| | - Wataru Suda
- Laboratory for Microbiome Sciences, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Ken Shirasu
- Plant Immunity Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, Japan
| | - Kazufumi Yazaki
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto, Japan
| | - Akifumi Sugiyama
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji, Kyoto, Japan
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23
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He M, Zhang G, Huo D, Yang S. Combined Metabolome and Transcriptome Analysis of Creamy Yellow and Purple Colored Panax notoginseng Roots. Life (Basel) 2023; 13:2100. [PMID: 37895482 PMCID: PMC10607970 DOI: 10.3390/life13102100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/03/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
Panax notoginseng (Burk.) F.H. Chen is a species of the Araliaceae family that inhabits southwestern China, Burma, and Nepal. It is cultivated on a commercial scale in Yunnan province, China, owing to its significance in traditional Chinese medicine. Panax notoginseng roots are usually yellow-white (HS); however, purple roots (ZS) have also been reported. The majority of P. notoginseng research has concentrated on the identification and production of natural chemicals in HS; however, there is little to no information about the composition of ZS. Using UPLC-MS/MS, we investigated the global metabolome profile of both ZS- and HS-type roots and discovered 834 metabolites from 11 chemical groups. There were 123 differentially accumulated metabolites (DAM) in the HS and ZS roots, which were classified as lipids and lipid-like molecules, polyketides, organoheterocyclic chemicals, and organooxygen compounds. We investigated the associated compounds in the DAMs because of the importance of anthocyanins in color and saponins and ginsenosides in health benefits. In general, we discovered that pigment compounds such as petunidin 3-glucoside, delphinidin 3-glucoside, and peonidin-3-O-beta-galactoside were more abundant in ZS. The saponin (eight compounds) and ginsenoside (26 compounds) content of the two varieties of roots differed as well. Transcriptome sequencing revealed that flavonoid and anthocyanin production genes were more abundant in ZS than in HS. Similarly, we found differences in gene expression in genes involved in terpenoid production and related pathways. Overall, these findings suggest that the purple roots of P. notoginseng contain varying amounts of ginsenosides and anthocyanins compared to roots with a creamy yellow color.
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Affiliation(s)
- Muhan He
- Office of Academic Affairs, Yunnan Forestry Technological College, Kunming 650224, China; (M.H.); (D.H.)
| | - Guanghui Zhang
- State Key Laboratory of Conservation and Utilization of Bio-Resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming 650201, China;
| | - Dongfang Huo
- Office of Academic Affairs, Yunnan Forestry Technological College, Kunming 650224, China; (M.H.); (D.H.)
| | - Shengchao Yang
- State Key Laboratory of Conservation and Utilization of Bio-Resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, National & Local Joint Engineering Research Center on Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest China, Yunnan Agricultural University, Kunming 650201, China;
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24
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Timilsena YP, Phosanam A, Stockmann R. Perspectives on Saponins: Food Functionality and Applications. Int J Mol Sci 2023; 24:13538. [PMID: 37686341 PMCID: PMC10487995 DOI: 10.3390/ijms241713538] [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: 08/03/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
Saponins are a diverse group of naturally occurring plant secondary metabolites present in a wide range of foods ranging from grains, pulses, and green leaves to sea creatures. They consist of a hydrophilic sugar moiety linked to a lipophilic aglycone, resulting in an amphiphilic nature and unique functional properties. Their amphiphilic structures enable saponins to exhibit surface-active properties, resulting in stable foams and complexes with various molecules. In the context of food applications, saponins are utilized as natural emulsifiers, foaming agents, and stabilizers. They contribute to texture and stability in food products and have potential health benefits, including cholesterol-lowering and anticancer effects. Saponins possess additional bioactivities that make them valuable in the pharmaceutical industry as anti-inflammatory, antimicrobial, antiviral, and antiparasitic agents to name a few. Saponins can demonstrate cytotoxic activity against cancer cell lines and can also act as adjuvants, enhancing the immune response to vaccines. Their ability to form stable complexes with drugs further expands their potential in drug delivery systems. However, challenges such as bitterness, cytotoxicity, and instability under certain conditions need to be addressed for effective utilization of saponins in foods and related applications. In this paper, we have reviewed the chemistry, functionality, and application aspects of saponins from various plant sources, and have summarized the regulatory aspects of the food-based application of quillaja saponins. Further research to explore the full potential of saponins in improving food quality and human health has been suggested. It is expected that this article will be a useful resource for researchers in food, feed, pharmaceuticals, and material science.
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Affiliation(s)
- Yakindra Prasad Timilsena
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Agriculture and Food, Werribee, VIC 3030, Australia;
| | - Arissara Phosanam
- Department of Food Technology and Nutrition, Faculty of Natural Resources and Agro-Industry, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakhon Nakon 47000, Thailand;
| | - Regine Stockmann
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Agriculture and Food, Werribee, VIC 3030, Australia;
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25
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Johnston EJ, Tallis J, Cunningham-Oakes E, Moses T, Moore SJ, Hosking S, Rosser SJ. Yeast lacking the sterol C-5 desaturase Erg3 are tolerant to the anti-inflammatory triterpenoid saponin escin. Sci Rep 2023; 13:13617. [PMID: 37604855 PMCID: PMC10442444 DOI: 10.1038/s41598-023-40308-0] [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: 05/10/2023] [Accepted: 08/08/2023] [Indexed: 08/23/2023] Open
Abstract
Escin is a mixture of over 30 glycosylated triterpenoid (saponin) structures, extracted from the dried fruit of horse chestnuts. Escin is currently used as an anti-inflammatory, and has potential applications in the treatment of arthritis and cancer. Engineered yeast would enable production of specific bioactive components of escin at industrial scale, however many saponins have been shown to be toxic to yeast. Here we report that a Saccharomyces cerevisiae strain specifically lacking the sterol C-5 desaturase gene ERG3, exhibits striking enhanced tolerance to escin treatment. Transcriptome analyses, as well as pre-mixing of escin with sterols, support the hypothesis that escin interacts directly with ergosterol, but not as strongly with the altered sterols present in erg3Δ. A diverse range of saponins are of commercial interest, and this research highlights the value of screening lipidome mutants to identify appropriate hosts for engineering the industrial production of saponins.
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Affiliation(s)
- Emily J Johnston
- Centre for Engineering Biology, University of Edinburgh, Edinburgh, EH9 3BD, UK.
| | - Jess Tallis
- Centre for Engineering Biology, University of Edinburgh, Edinburgh, EH9 3BD, UK
| | - Edward Cunningham-Oakes
- Department of Infection Biology and Microbiomes, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L69 7ZB, UK
| | - Tessa Moses
- EdinOmics, RRID:SCR_021838, University of Edinburgh, Max Born Crescent, Edinburgh, EH9 3BF, UK
| | - Simon J Moore
- Genetic Science Division, Thermo Fisher Scientific, 7 Kingsland Grange, Warrington, Cheshire, WA1 4SR, UK
| | - Sarah Hosking
- Unilever R&D Port Sunlight, Quarry Road East, Bebington, Wirral, CH63 3JW, UK
| | - Susan J Rosser
- Centre for Engineering Biology, University of Edinburgh, Edinburgh, EH9 3BD, UK.
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26
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Shida W, Tahara Y, Morikawa S, Monde K, Koga R, Ohsugi T, Otsuka M, Ikemoto A, Tateishi H, Ikeda T, Fujita M. The unique activity of saponin: Induction of cytotoxicity in HTLV-1 infected cells. Bioorg Med Chem 2023; 91:117408. [PMID: 37453188 DOI: 10.1016/j.bmc.2023.117408] [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: 05/19/2023] [Revised: 07/02/2023] [Accepted: 07/03/2023] [Indexed: 07/18/2023]
Abstract
Infection with the retrovirus human T-cell leukemia virus type 1 (HTLV-1) sometimes causes diseases that are difficult to cure. To find anti-HTLV-1 natural compounds, we opted to screen using the HTLV-1-infected T-cell line, MT-2. Based on our results, an extract of the pulp/seeds of Akebia quinata Decaisne fruit killed MT-2 cells but did not affect the Jurkat cell line that was not infected with virus. To determine the active ingredients, seven saponins with one-six sugar moieties were isolated from A. quinata seeds, and their activities against the two cell lines were examined. Both cell lines were killed in a similar manner by Akebia saponins A and B. Further, Akebia saponins D, E, PK and G did not exhibit cytotoxicity. Akebia saponin C had a similar activity to the extract found in the screening. This compound was found to enhance Gag aggregation, induce the abnormal cleavage of Gag, suppress virion release, and preferentially kill HTLV-1 infected cells; however, their relationship remains elusive. Our findings may lead to the development of new therapies for infectious diseases based on the removal of whole-virus-infected cells.
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Affiliation(s)
- Wataru Shida
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan
| | - Yurika Tahara
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan
| | - Saki Morikawa
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan
| | - Kazuaki Monde
- Department of Microbiology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Kumamoto 860-8556, Japan
| | - Ryoko Koga
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan
| | - Takeo Ohsugi
- Department of Laboratory Animal Science, School of Veterinary Medicine, Rakuno-Gakuen University, 582 Bunkyodai-midorimachi, Ebetsu, Hokkaido 069-8501, Japan
| | - Masami Otsuka
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan; Department of Drug Discovery, Science Farm Ltd., 1-7-30 Kuhonji, Chuo-ku, Kumamoto, Kumamoto 862-0976, Japan
| | - Atsushi Ikemoto
- Division of Regional Studies and Clinical Psychology, Faculty of Education and Human Studies, Akita University, 1-1 Tegatagakuen-machi, Akita, Akita 010-8502, Japan
| | - Hiroshi Tateishi
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan
| | - Tsuyoshi Ikeda
- Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto, Kumamoto 860-0082, Japan.
| | - Mikako Fujita
- Medicinal and Biological Chemistry Science Farm Joint Research Laboratory, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto, Kumamoto 862-0973, Japan.
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27
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Lacchini E, Venegas-Molina J, Goossens A. Structural and functional diversity in plant specialized metabolism signals and products: The case of oxylipins and triterpenes. CURRENT OPINION IN PLANT BIOLOGY 2023; 74:102371. [PMID: 37148672 DOI: 10.1016/j.pbi.2023.102371] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 04/03/2023] [Accepted: 04/03/2023] [Indexed: 05/08/2023]
Abstract
Metabolic enzymes tend to evolve towards catalytic efficacy, precision and speed. This seems particularly true for ancient and conserved enzymes involved in fundamental cellular processes that are present virtually in every cell and organism and converting and producing relatively limited metabolite numbers. Nevertheless, sessile organisms like plants have an astonishing repertoire of specific (specialized) metabolites that, by numbers and chemical complexity, by far exceed primary metabolites. Most theories agree that early gene duplication, subsequent positive selection and diversifying evolution have allowed relaxed selection of duplicated metabolic genes, thus facilitating the accumulation of mutations that could broaden substrate/product specificity and lower activation barriers and kinetics. Here, we use oxylipins, oxygenated fatty acids of plastidial origin to which the phytohormone jasmonate belongs, and triterpenes, a large group of specialized metabolites whose biosynthesis is often elicited by jasmonates, to showcase the structural and functional diversity of chemical signals and products in plant metabolism.
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Affiliation(s)
- Elia Lacchini
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052, Ghent, Belgium; VIB Center for Plant Systems Biology, B-9052, Ghent, Belgium
| | - Jhon Venegas-Molina
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052, Ghent, Belgium; VIB Center for Plant Systems Biology, B-9052, Ghent, Belgium
| | - Alain Goossens
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052, Ghent, Belgium; VIB Center for Plant Systems Biology, B-9052, Ghent, Belgium.
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28
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Chakraborty P, Biswas A, Dey S, Bhattacharjee T, Chakrabarty S. Cytochrome P450 Gene Families: Role in Plant Secondary Metabolites Production and Plant Defense. J Xenobiot 2023; 13:402-423. [PMID: 37606423 PMCID: PMC10443375 DOI: 10.3390/jox13030026] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 08/23/2023] Open
Abstract
Cytochrome P450s (CYPs) are the most prominent family of enzymes involved in NADPH- and O2-dependent hydroxylation processes throughout all spheres of life. CYPs are crucial for the detoxification of xenobiotics in plants, insects, and other organisms. In addition to performing this function, CYPs serve as flexible catalysts and are essential for producing secondary metabolites, antioxidants, and phytohormones in higher plants. Numerous biotic and abiotic stresses frequently affect the growth and development of plants. They cause a dramatic decrease in crop yield and a deterioration in crop quality. Plants protect themselves against these stresses through different mechanisms, which are accomplished by the active participation of CYPs in several biosynthetic and detoxifying pathways. There are immense potentialities for using CYPs as a candidate for developing agricultural crop species resistant to biotic and abiotic stressors. This review provides an overview of the plant CYP families and their functions to plant secondary metabolite production and defense against different biotic and abiotic stresses.
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Affiliation(s)
- Panchali Chakraborty
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA 50011, USA;
| | - Ashok Biswas
- Annual Bast Fiber Breeding Laboratory, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China
- Department of Horticulture, Sylhet Agricultural University, Sylhet 3100, Bangladesh
| | - Susmita Dey
- Annual Bast Fiber Breeding Laboratory, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China
- Department of Plant Pathology and Seed Science, Sylhet Agricultural University, Sylhet 3100, Bangladesh
| | - Tuli Bhattacharjee
- Department of Chemistry, Jahangirnagar University, Dhaka 1342, Bangladesh
| | - Swapan Chakrabarty
- College of Forest Resources and Environmental Sciences, Michigan Technological University, Houghton, MI 49931, USA
- College of Computing, Department of Computer Science, Michigan Technological University, Houghton, MI 49931, USA
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29
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Zhang Y, Hao R, Chen J, Li S, Huang K, Cao H, Farag MA, Battino M, Daglia M, Capanoglu E, Zhang F, Sun Q, Xiao J, Sun Z, Guan X. Health benefits of saponins and its mechanisms: perspectives from absorption, metabolism, and interaction with gut. Crit Rev Food Sci Nutr 2023:1-22. [PMID: 37216483 DOI: 10.1080/10408398.2023.2212063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Saponins, consisting of sapogenins as their aglycones and carbohydrate chains, are widely found in plants and some marine organisms. Due to the complexity of the structure of saponins, involving different types of sapogenins and sugar moieties, investigation of their absorption and metabolism is limited, which further hinders the explanation of their bioactivities. Large molecular weight and complex structures limit the direct absorption of saponins rendering their low bioavailability. As such, their major modes of action may be due to interaction with the gastrointestinal environment, such as enzymes and nutrients, and interaction with the gut microbiota. Many studies have reported the interaction between saponins and gut microbiota, that is, the effects of saponins on changing the composition of gut microbiota, and gut microbiota playing an indispensable role in the biotransformation of saponins into sapogenins. However, the metabolic routes of saponins by gut microbiota and their mutual interactions are still sparse. Thus, this review summarizes the chemistry, absorption, and metabolic pathways of saponins, as well as their interactions with gut microbiota and impacts on gut health, to better understand how saponins exert their health-promoting functions.
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Affiliation(s)
- Yu Zhang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai, China
| | - Ruojie Hao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Junda Chen
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Sen Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai, China
| | - Kai Huang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai, China
| | - Hongwei Cao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai, China
| | - Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Cairo, Egypt
| | - Maurizio Battino
- Department of Clinical Sciences, Polytechnic University of Marche, Ancona, Italy
- International Joint Research Laboratory of Intelligent Agriculture and Agri-Products Processing, Jiangsu University, Zhenjiang, China
- Research Group on Foods, Nutritional Biochemistry and Health, Universidad Europea del Atlántico, Santander, Spain
| | - Maria Daglia
- International Joint Research Laboratory of Intelligent Agriculture and Agri-Products Processing, Jiangsu University, Zhenjiang, China
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Esra Capanoglu
- Faculty of Chemical and Metallurgical Engineering, Food Engineering Department, Istanbul Technical University, Maslak, Istanbul, Turkey
| | - Fan Zhang
- Department of Analytical and Food Chemistry, Faculty of Sciences, Universidade de Vigo, Nutrition and Bromatology Group, Ourense, Spain
| | - Qiqi Sun
- Joint Center for Translational Medicine, Southern Medical University Affiliated Fengxian Hospital, Shanghai, China
| | - Jianbo Xiao
- Department of Analytical and Food Chemistry, Faculty of Sciences, Universidade de Vigo, Nutrition and Bromatology Group, Ourense, Spain
| | - Zhenliang Sun
- Joint Center for Translational Medicine, Southern Medical University Affiliated Fengxian Hospital, Shanghai, China
| | - Xiao Guan
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai, China
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Wang D, Yu Z, Guan M, Cai Q, Wei J, Ma P, Xue Z, Ma R, Oksman-Caldentey KM, Rischer H. Comparative transcriptome analysis of Veratrum maackii and Veratrum nigrum reveals multiple candidate genes involved in steroidal alkaloid biosynthesis. Sci Rep 2023; 13:8198. [PMID: 37211560 DOI: 10.1038/s41598-023-35429-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 05/17/2023] [Indexed: 05/23/2023] Open
Abstract
Veratrum (Melanthiaceae; Liliales) is a genus of perennial herbs known for the production of unique bioactive steroidal alkaloids. However, the biosynthesis of these compounds is incompletely understood because many of the downstream enzymatic steps have yet to be resolved. RNA-Seq is a powerful method that can be used to identify candidate genes involved in metabolic pathways by comparing the transcriptomes of metabolically active tissues to controls lacking the pathway of interest. The root and leaf transcriptomes of wild Veratrum maackii and Veratrum nigrum plants were sequenced and 437,820 clean reads were assembled into 203,912 unigenes, 47.67% of which were annotated. We identified 235 differentially expressed unigenes potentially involved in the synthesis of steroidal alkaloids. Twenty unigenes, including new candidate cytochrome P450 monooxygenases and transcription factors, were selected for validation by quantitative real-time PCR. Most candidate genes were expressed at higher levels in roots than leaves but showed a consistent profile across both species. Among the 20 unigenes putatively involved in the synthesis of steroidal alkaloids, 14 were already known. We identified three new CYP450 candidates (CYP76A2, CYP76B6 and CYP76AH1) and three new transcription factor candidates (ERF1A, bHLH13 and bHLH66). We propose that ERF1A, CYP90G1-1 and CYP76AH1 are specifically involved in the key steps of steroidal alkaloid biosynthesis in V. maackii roots. Our data represent the first cross-species analysis of steroidal alkaloid biosynthesis in the genus Veratrum and indicate that the metabolic properties of V. maackii and V. nigrum are broadly conserved despite their distinct alkaloid profiles.
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Affiliation(s)
- Dan Wang
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, Jilin Province, People's Republic of China
- College of Agricultural Sciences, Yanbian University, Yanji, 133000, Jilin Province, People's Republic of China
| | - Zhijing Yu
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, Jilin Province, People's Republic of China
| | - Meng Guan
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin, People's Republic of China
| | - Qinan Cai
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, Jilin Province, People's Republic of China
| | - Jia Wei
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, Jilin Province, People's Republic of China
| | - Pengda Ma
- College of Life Sciences, Northwest A & F University, Yangling, 712100, People's Republic of China
| | - Zheyong Xue
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Science, Northeast Forestry University, Hexing Road 26, Harbin, People's Republic of China
| | - Rui Ma
- Jilin Provincial Key Laboratory of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, 130033, Jilin Province, People's Republic of China.
| | | | - Heiko Rischer
- VTT Technical Research Centre of Finland Ltd., P. O. Box 1000, 02044 VTT, Espoo, Finland.
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Wang W, Hou L, Li S, Li J. The Functional Characterization of DzCYP72A12-4 Related to Diosgenin Biosynthesis and Drought Adaptability in Dioscorea zingiberensis. Int J Mol Sci 2023; 24:ijms24098430. [PMID: 37176134 PMCID: PMC10179397 DOI: 10.3390/ijms24098430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 05/02/2023] [Accepted: 05/06/2023] [Indexed: 05/15/2023] Open
Abstract
Dioscorea zingiberensis is a perennial herb famous for the production of diosgenin, which is a valuable initial material for the industrial synthesis of steroid drugs. Sterol C26-hydroxylases, such as TfCYP72A616 and PpCYP72A613, play an important role in the diosgenin biosynthesis pathway. In the present study, a novel gene, DzCYP72A12-4, was identified as C26-hydroxylase and was found to be involved in diosgenin biosynthesis, for the first time in D. zingiberensis, using comprehensive methods. Then, the diosgenin heterogenous biosynthesis pathway starting from cholesterol was created in stable transgenic tobacco (Nicotiana tabacum L.) harboring DzCYP90B71(QPZ88854), DzCYP90G6(QPZ88855) and DzCYP72A12-4. Meanwhile, diosgenin was detected in the transgenic tobacco using an ultra-performance liquid chromatography system (Vanquish UPLC 689, Thermo Fisher Scientific, Bremen, Germany) tandem MS (Q Exactive Hybrid Quadrupole-Orbitrap Mass Spectrometer, Thermo Fisher Scientific, Bremen, Germany). Further RT-qPCR analysis showed that DzCYP72A12-4 was highly expressed in both rhizomes and leaves and was upregulated under 15% polyethylene glycol (PEG) treatment, indicating that DzCYP72A12-4 may be related to drought resistance. In addition, the germination rate of the diosgenin-producing tobacco seeds was higher than that of the negative controls under 15% PEG pressure. In addition, the concentration of malonaldehyde (MDA) was lower in the diosgenin-producing tobacco seedlings than those of the control, indicating higher drought adaptability. The results of this study provide valuable information for further research on diosgenin biosynthesis in D. zingiberensis and its functions related to drought adaptability.
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Affiliation(s)
- Weipeng Wang
- State Key Laboratory of Hybrid Rice, Department of Plant Science, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Lixiu Hou
- State Key Laboratory of Hybrid Rice, Department of Plant Science, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Song Li
- State Key Laboratory of Hybrid Rice, Department of Plant Science, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Jiaru Li
- State Key Laboratory of Hybrid Rice, Department of Plant Science, College of Life Sciences, Wuhan University, Wuhan 430072, China
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Salisbury LJ, Fletcher SJ, Stok JE, Churchman LR, Blanchfield JT, De Voss JJ. Characterization of the cholesterol biosynthetic pathway in Dioscorea transversa. J Biol Chem 2023:104768. [PMID: 37142228 DOI: 10.1016/j.jbc.2023.104768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/06/2023] Open
Abstract
Cholesterol is the precursor of bioactive plant metabolites such as steroidal saponins. An Australian plant, Dioscorea transversa, produces only two steroidal saponins: 1β-hydroxyprotoneogracillin and protoneogracillin. Here, we used D. transversa as a model in which to elucidate the biosynthetic pathway to cholesterol, a precursor to these compounds. Preliminary transcriptomes of D. transversa rhizome and leaves were constructed, annotated, and analyzed. We identified a novel sterol side chain reductase (SSR) as a key initiator of cholesterol biosynthesis in this plant. By complementation in yeast, we determine that this SSR reduces Δ24,28 double bonds required for phytosterol biogenesis, as well as Δ24,25 double bonds. The latter function is believed to initiate cholesterogenesis by reducing cycloartenol to cycloartanol. Through heterologous expression, purification and enzymatic reconstitution we also demonstrate that the D. transversa sterol demethylase (CYP51) effectively demethylates obtusifoliol, an intermediate of phytosterol biosynthesis and 4-desmethyl-24,25-dihydrolanosterol, a postulated downstream intermediate of cholesterol biosynthesis. In summary, we investigated specific steps of the cholesterol biosynthetic pathway, providing further insight into the downstream production of bioactive steroidal saponin metabolites.
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Kaushal N, Verma D, Alok A, Pandey A, Singh K. Heterologous expression of Chlorophytum borivilianum Squalene epoxidase in tobacco modulates stigmasterol production and alters vegetative and reproductive growth. PLANT CELL REPORTS 2023; 42:909-919. [PMID: 36894686 DOI: 10.1007/s00299-023-03000-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 02/27/2023] [Indexed: 05/06/2023]
Abstract
KEYMESSAGE CbSE overexpression increased stigmasterol levels and altered plant morphology. The genes upstream and downstream of CbSE were found to be upregulated, which confirms its regulatory role in the saponin biosynthetic pathway. Chlorophytum borivilianum is a high-value medicinal plant with many promising preclinical applications that include saponins as a major active ingredient. Squalene epoxidase (SE) is one of the major rate-limiting enzymes of the saponin biosynthetic pathway. Here, we functionally characterized C. borivilianum SE (CbSE) by over-expressing heterologously in Nicotiana tabacum. The heterologous expression of CbSE resulted in stunted pant growth with altered leaf and flower morphology. Next, RT-qPCR analysis of transgenic plants overexpressing CbSE revealed increased expression levels of Cycloartenol synthase (CAS), Beta amyrin synthase (βAS), and cytochrome P450 monooxygenase 51 (CYP51) (Cytochrome P450), which encode key enzymes for triterpenoid and phytosterol biosynthesis in C. borivilianum. Further, Methyl Jasmonate (MeJa) treatment upregulated Squalene synthase (SQS), SE, and Oxidosqualene cyclases (OSCs) to a significant level. GC-MS analysis of the leaf and hairy roots of the transformants showed an increased stigmasterol content (0.5-1.0 fold) compared to wild type (WT) plants. These results indicate that CbSE is a rate-limiting gene, which encodes an efficient enzyme responsible for phytosterol and triterpenoid production in C. borivilianum.
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Affiliation(s)
- Nishant Kaushal
- Department of Biotechnology, BMS Block I, Panjab University, Sector 25, Chandigarh, 160014, India
| | - Deepika Verma
- Department of Biotechnology, BMS Block I, Panjab University, Sector 25, Chandigarh, 160014, India
| | - Anshu Alok
- Department of Biotechnology, BMS Block I, Panjab University, Sector 25, Chandigarh, 160014, India
- UMN · College of Food, Agricultural and Natural Resource Sciences, University of Minnesota Twin Cities, Minneapolis, MN, 55455, USA
| | - Ashutosh Pandey
- National Institute of Plant Genome Research, New Delhi, 110067, India
| | - Kashmir Singh
- Department of Biotechnology, BMS Block I, Panjab University, Sector 25, Chandigarh, 160014, India.
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Fagbohun OF, Joseph JS, Oriyomi OV, Rupasinghe HPV. Saponins of North Atlantic Sea Cucumber: Chemistry, Health Benefits, and Future Prospectives. Mar Drugs 2023; 21:md21050262. [PMID: 37233456 DOI: 10.3390/md21050262] [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: 04/03/2023] [Revised: 04/13/2023] [Accepted: 04/21/2023] [Indexed: 05/27/2023] Open
Abstract
Frondosides are the major saponins (triterpene glycosides) of the North Atlantic sea cucumber (Cucumaria frondosa). Frondosides possess amphiphilic characteristics due to the presence of various hydrophilic sugar moieties and hydrophobic genin (sapogenin). Saponins are abundant in holothurians, including in sea cucumbers that are widely distributed across the northern part of the Atlantic Ocean. Over 300 triterpene glycosides have been isolated, identified, and categorized from many species of sea cucumbers. Furthermore, specific saponins from sea cucumbers are broadly classified on the basis of the fron-dosides that have been widely studied. Recent studies have shown that frondoside-containing extracts from C. frondosa exhibit anticancer, anti-obesity, anti-hyperuricemic, anticoagulant, antioxidant, antimicrobial, antiangiogenic, antithrombotic, anti-inflammatory, antitumor, and immunomodulatory activities. However, the exact mechanism(s) of action of biological activities of frondosides is not clearly understood. The function of some frondosides as chemical defense molecules need to be understood. Therefore, this review discusses the different frondosides of C. frondosa and their potential therapeutic activities in relation to the postulated mechanism(s) of action. In addition, recent advances in emerging extraction techniques of frondosides and other saponins and future perspectives are discussed.
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Affiliation(s)
- Oladapo F Fagbohun
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
| | - Jitcy S Joseph
- Department of Toxicology and Biochemistry, The National Institute of Occupational Health, A Division of National Health Laboratory Service, Johannesburg 1709, South Africa
- Department of Life & Consumer Sciences, University of South Africa, Johannesburg 1709, South Africa
| | - Olumayowa V Oriyomi
- Department of Biological Sciences, First Technical University, Ibadan 200261, Nigeria
| | - H P Vasantha Rupasinghe
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
- Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS B3H 4H7, Canada
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Zhang X, Zhang Y, Guo Y, Xue P, Xue Z, Zhang Y, Zhang H, Ito Y, Dou J, Guo Z. Research progress of diosgenin extraction from Dioscorea zingiberensis C. H. Wright: Inspiration of novel method with environmental protection and efficient characteristics. Steroids 2023; 192:109181. [PMID: 36642106 DOI: 10.1016/j.steroids.2023.109181] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
Diosgenin was the starting materials to synthesize various hormone drugs and mainly generated from Dioscorea zingiberensis C. H. Wright by acidolysis, enzymolysis, microbiological fermentation, and integrated manner. Only acidic hydrolysis with strong acid such as hydrochloric acid or sulfuric acid was used in practice in diosgenin enterprises due to their feasibility and simplicity, nevertheless finally resulting in a great deal of unmanageable wastewater and severely polluted the surrounding environment. Aiming to provide a comprehensive and up-to date information of researches on diosgenin production from this plant, 151 cases were collected from scientific databases including Web of Science, Pubmed, Science Direct, Wiley, Springer, and China Knowledge Resource Integrated (CNKI). Their advantages and disadvantages with different production methods were analyzed based on these available data in this review paper. Considering the fact that nearly all of diosgenin enterprises were closed for the environmental protection and the life health of the people, this review paper was beneficial for providing useful guidelines to develop novel technologies with environmentally-friendly and cleaner features for diosgenin production or facilitate the transformation of other methods like enzymolysis, microbiological fermentation, or integrated methods from laboratory scale to industry scale.
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Affiliation(s)
- Xinxin Zhang
- Institute of Targeted Drugs, Western China Science and Technology Innovation Harbour, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yu Zhang
- Institute of Targeted Drugs, Western China Science and Technology Innovation Harbour, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yuting Guo
- Institute of Targeted Drugs, Western China Science and Technology Innovation Harbour, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Peiyun Xue
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi, China
| | - Zhaowei Xue
- Institute of Targeted Drugs, Western China Science and Technology Innovation Harbour, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yan Zhang
- Xi'an Medical University, Xi'an, Shaanxi, China
| | - Hong Zhang
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi, China
| | - Yoichiro Ito
- Laboratory of Bio-separation Technologies, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jianwei Dou
- Institute of Targeted Drugs, Western China Science and Technology Innovation Harbour, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zengjun Guo
- Institute of Targeted Drugs, Western China Science and Technology Innovation Harbour, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Yang C, Bai Y, Halitschke R, Gase K, Baldwin G, Baldwin IT. Exploring the metabolic basis of growth/defense trade-offs in complex environments with Nicotiana attenuata plants cosilenced in NaMYC2a/b expression. THE NEW PHYTOLOGIST 2023; 238:349-366. [PMID: 36636784 DOI: 10.1111/nph.18732] [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: 10/10/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
In response to challenges from herbivores and competitors, plants use fitness-limiting resources to produce (auto)toxic defenses. Jasmonate signaling, mediated by MYC2 transcription factors (TF), is thought to reconfigure metabolism to minimize these formal costs of defense and optimize fitness in complex environments. To study the context-dependence of this metabolic reconfiguration, we cosilenced NaMYC2a/b by RNAi in Nicotiana attenuata and phenotyped plants in the field and increasingly realistic glasshouse setups with competitors and mobile herbivores. NaMYC2a/b had normal phytohormonal responses, and higher growth and fitness in herbivore-reduced environments, but were devastated in high herbivore-load environments in the field due to diminished accumulations of specialized metabolites. In setups with competitors and mobile herbivores, irMYC2a/b plants had lower fitness than empty vector (EV) in single-genotype setups but increased fitness in mixed-genotype setups. Correlational analyses of metabolic, resistance, and growth traits revealed the expected defense/growth associations for most sectors of primary and specialized metabolism. Notable exceptions were some HGL-DTGs and phenolamides that differed between single-genotype and mixed-genotype setups, consistent with expectations of a blurred functional trichotomy of metabolites. MYC2 TFs mediate the reconfiguration of primary and specialized metabolic sectors to allow plants to optimize their fitness in complex environments.
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Affiliation(s)
- Caiqiong Yang
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Jena, D-07745, Germany
| | - Yuechen Bai
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Jena, D-07745, Germany
| | - Rayko Halitschke
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Jena, D-07745, Germany
| | - Klaus Gase
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Jena, D-07745, Germany
| | - Gundega Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Jena, D-07745, Germany
| | - Ian T Baldwin
- Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Hans-Knöll-Straße 8, Jena, D-07745, Germany
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37
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Tighchi HA, Kayhani MH, Faezian A, Yeganehzad S, Miller R. Dynamic interfacial properties and foam behavior of licorice root extract solutions. Colloids Surf B Biointerfaces 2023; 224:113181. [PMID: 36822115 DOI: 10.1016/j.colsurfb.2023.113181] [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: 11/23/2022] [Revised: 01/17/2023] [Accepted: 01/27/2023] [Indexed: 01/31/2023]
Abstract
Licorice (Glycyrrhiza glabra) is a useful plant of the family Fabaceae, with sweet-tasting roots. The root extract of this plant is rich in saponins, so it can be considered a source of natural surfactants. This research provides some applicable information about the dynamic surface tension and foam behavior of aqueous solutions of licorice root extract (LRE). The pendant drop shape analysis was utilized to study the surface tension and dilational surface rheology of LRE at the water/air interface. The Bikerman type experiment was used to measure foamability and foam stability of aqueous LRE solutions. The equilibrium surface tensions reveal that the LRE contains surface-active components and is capable of reducing the surface tension by 25 mN/m at the critical aggregation concentration (CAC). The surface dilational visco-elasticity measurements proved that the adsorption layers are predominantly of elastic nature. Also the foamability and foam stability show a meaningful correlation with the dynamic surface properties. This study aims to contribute to the development of appropriate utilization of the benefits provided by a biosurfactant source in foam-related commercial applications.
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Affiliation(s)
- Hashem Ahmadi Tighchi
- Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran
| | | | - Ali Faezian
- Department of Food Machinery Design, Research Institute of Food Science & Technology (RIFST), Mashhad, Iran
| | - Samira Yeganehzad
- Department of Food Processing, Research Institute of Food Science & Technology (RIFST), Mashhad, Iran
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Ibrahim AM, Gad El-Karim RM, Ali RE, Nasr SM. Toxicological effects of Saponin on the free larval stages of Schistosoma mansoni, infection rate, some biochemical and molecular parameters of Biomphalaria alexandrina snails. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 191:105357. [PMID: 36963932 DOI: 10.1016/j.pestbp.2023.105357] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/15/2023] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Saponins have been used as biopesticides. The objective of the present study is to investigate the toxic effects of Saponin against Biomphalaria alexandrina snails. Results showed that Saponin exhibited a molluscicidal activity against adult B. alexandrina snails at LC50 (70.05 mg/l) and had a larvicidal effect on the free larval stages of Schistosoma mansoni. To evaluate the lethal effects, snails were exposed to either LC10 (51.8 mg/l) or LC25 (60.4 mg/l) concentrations of Saponin. The survival, the infection rates, protein, albumin, and total fat levels were decreased, while glucose levels were increased in exposed snails compared to control snails. Also, these concentrations significantly raised Malondialdehyde (MDA) and Glutathione S Transferase (GST) levels, whereas reduced Superoxide dismutase (SOD) activity and the total antioxidant capacity (TAC) in exposed snails. Furthermore, these concentrations resulted in endocrine disruptions where it caused a significant increase in testosterone (T) level; while a significant decrease in Estradiol (E2) levels were noticed. As for Estrogen (E) level, it was increased after exposure to LC10 Saponin concentration while after exposure to LC25 concentration, it was decreased. Also, LC10 and LC25 concentrations of Saponin caused a genotoxic effect and down-regulation of metabolic cycles in the snails. In conclusion, Saponins caused deleterious effects on the intermediate host of schistosomiasis mansoni. Therefore, B. alexandrina snails could be used as models to screen the toxic effects of Saponins in the aquatic environment and if it was used as a molluscicide, it should be used cautiously and under controlled circumstances.
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Affiliation(s)
- Amina M Ibrahim
- Medical Malacology Department, Theodor Bilharz Research Institute, Imbaba, Giza, Egypt.
| | - Rasha M Gad El-Karim
- Medical Malacology Department, Theodor Bilharz Research Institute, Imbaba, Giza, Egypt
| | - Rasha E Ali
- Medical Malacology Department, Theodor Bilharz Research Institute, Imbaba, Giza, Egypt
| | - Sami M Nasr
- Biochemistry, Molecular Biology and Medicinal chemistry Department, Theodor Bilharz Research Institute, Giza, Egypt
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Chiawa SC, Attaugwu RN, Uvere PO. Effect of soaking and air-resting on the phytochemical, antioxidant, and antimicrobial properties of Piper guineense (Schum and Thonn) seeds. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:2070-2076. [PMID: 36347645 DOI: 10.1002/jsfa.12323] [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: 02/11/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Soaking and air-resting are processing steps in malting. This has been reported to increase metabolic and enzyme activities in rice paddy as a result of exposure of the grain to atmospheric oxygen. The present study evaluated the effect of soaking and air-resting on the phytochemical composition of Piper guineense seeds. The seed extracts were prepared by: soaking the seeds in water for 4 h; air-resting for 30, 60, 90, and 120 min; and re-soaking for another 4 h. The out-of-steep seeds were milled and an extract was formed by tissue homogenization and maceration using ethanol. The phytochemical, antioxidant, and antibacterial properties of the seed extract were determined using standard methods. RESULTS The alkaloid, flavonoid, saponin, tannin, and total phenol contents were 0.126-0.268, 0.091-0.172, 0.080-0.123, 0.00-0.107, and 0.447-0.908 g kg-1 respectively. The antioxidant properties (reducing power) of the seed extracts were concentration-dependent and were in the range 1.08-3.24 g kg-1 at 8 mg mL-1 , 1.14-3.47 g kg-1 at 16 mg mL-1 , 1.30-3.35 g kg-1 at 24 mg mL-1 , 1.26-3.11 g kg-1 at 32 mg mL-1 , and 1.13-3.04 g kg-1 at 40 mg mL-1 , respectively. The antibacterial activities against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa showed that, at 100 mg mL-1 , the inhibition zone diameters of the seed extracts were in the range 10-23 mm. CONCLUSION Soaking and air-resting of P. guineense seeds increased the phytochemical components of the seeds. The extracts from the seeds air-rested for 30 min showed the highest phytochemical contents and had the highest antioxidant and antimicrobial properties. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Sylvia C Chiawa
- Department of Food Science and Technology, University of Nigeria, Nsukka, Nigeria
| | - Roseline N Attaugwu
- Department of Food Science and Technology, Madonna University, Enugu, Nigeria
| | - Peter O Uvere
- Department of Food Science and Technology, University of Nigeria, Nsukka, Nigeria
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40
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Decoding Metabolic Reprogramming in Plants under Pathogen Attacks, a Comprehensive Review of Emerging Metabolomics Technologies to Maximize Their Applications. Metabolites 2023; 13:metabo13030424. [PMID: 36984864 PMCID: PMC10055942 DOI: 10.3390/metabo13030424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/01/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023] Open
Abstract
In their environment, plants interact with a multitude of living organisms and have to cope with a large variety of aggressions of biotic or abiotic origin. What has been known for several decades is that the extraordinary variety of chemical compounds the plants are capable of synthesizing may be estimated in the range of hundreds of thousands, but only a fraction has been fully characterized to be implicated in defense responses. Despite the vast importance of these metabolites for plants and also for human health, our knowledge about their biosynthetic pathways and functions is still fragmentary. Recent progress has been made particularly for the phenylpropanoids and oxylipids metabolism, which is more emphasized in this review. With an increasing interest in monitoring plant metabolic reprogramming, the development of advanced analysis methods should now follow. This review capitalizes on the advanced technologies used in metabolome mapping in planta, including different metabolomics approaches, imaging, flux analysis, and interpretation using bioinformatics tools. Advantages and limitations with regards to the application of each technique towards monitoring which metabolite class or type are highlighted, with special emphasis on the necessary future developments to better mirror such intricate metabolic interactions in planta.
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Pathological changes of the spleen in mice infected with influenza against the background of the use of saponin tauroside Sx1. ACTA BIOMEDICA SCIENTIFICA 2023. [DOI: 10.29413/abs.2023-8.1.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
Background. It is well known that viral infections are able to cause an imbalance of the interferon system and inhibition of cellular and phagocytic reactions of the body. One of the possible solutions of the flu treatment problem may be the application of immunomodulators of native plant origin since the influenza virus possesses a suppressive effect on cellular immunity and the interferon system.The aim. To evaluate the effect of saponin tauroside Sx1 obtained from Crimean ivy leaves on histological changes in the spleen of mice infected with influenza A/WSN/1/33(H1N1) virus.Material and methods. We used 78 male BALB/c mice weighing 16–18 g which were divided into the groups: control (K; n = 12); healthy animals treated with saponin (KS; n = 22); animals infected with influenza virus A/WSN/1/33(H1N1) (V; n = 22); infected animals treated with saponin tauroside Sx1 twice a day for 3 days (SV; n = 22). Histological studies of the spleen were performed on the 4th (subgroups V, SV, KS) and 14th day (2V, 2SV, 2KS).Results. The spleen tissue of the KS subgroup demonstrated hyperplasia of the white pulp in the form of lymphoid nodules expansion. On the 4th day in the KS subgroup a statistically significant increase in the total area of the lymphoid nodules by 3.9 times compared to the K subgroup was observed. In subgroup V, there was a sharp decrease in the area of white pulp and in 2V the lymphoid nodules zones were practically indistinguishable. Applied correction in the SV and 2SV subgroups significantly ceased the damaging effect of the virus: the lymphoid nodules area increased by 2.7 times in the 2SV subgroup compared to 2V.Conclusion. Infection with the H1N1 influenza virus leads to compensatory activation of the immune response, however, on the 14th day, a pronounced depletion of the splenic white pulp occurred. The introduction of saponin tauroside Sx1 enhanced the functional activity of the spleen due to an increase of the white pulp area.
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Murugesan M, Kandhavelu M, Thiyagarajan R, Natesan S, Rajendran P, Murugesan A. Marine halophyte derived polyphenols inhibit glioma cell growth through mitogen-activated protein kinase signaling pathway. Biomed Pharmacother 2023; 159:114288. [PMID: 36682245 DOI: 10.1016/j.biopha.2023.114288] [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: 12/01/2022] [Revised: 01/18/2023] [Accepted: 01/18/2023] [Indexed: 01/21/2023] Open
Abstract
Plants that are pharmacologically significant require intensive phytochemical characterization for bioactive profiling of the compounds, which has enabled their safe use in ayurvedic medicine. The present study is focused on the phytochemical analyses, quantitative estimation and profiling of secondary metabolites of leaf extract, as well as the antioxidant and cytotoxic activity of the potent halophytes such as Avicennia marina, Ceriops tagal, Ipomoea pes-caprae, and Sonneratia apetala. The in vitro antioxidant property was investigated using DPPH, ferric reducing antioxidant capacity (FRAP) assay. Bioactive compounds such as phenols, flavonoids, saponin and alkaloids were quantitatively estimated from the extracts of A.marina, C.tagal, I.pes-capra and S.apetala, which possessed higher phenol content than the other studied halophytes. The extracts at 200 µg/ml revealed higher antioxidant activity than the standard ascorbic acid and it functions as a powerful oxygen free radical scavenger with 77.37%, 75.35% and 72.84% for S.apetala, I.pes-caprae and C.tagal respectively and with least IC50 for I.pes-caprae (11.95 µg/ml) followed by C.tagal (49.94 µg/ml). Cell viability and anti-proliferative activity of different polyphenolic fractions of C.tagal (CT1 and CT2) and I.pes-caprae fraction (IP) against LN229, SNB19 revealed Ipomoea as the promising anti-cytotoxic fraction. IP-derived polyphenols was further subjected to apoptosis, migration assay, ROS and caspase - 3 and - 7 to elucidate its potentiality as a therapeutic drug. IP-polyphenols was found to have higher percentage of inhibition than the CT1 and CT2 polyphenols of C.tagal on comparison with TMZ. All the above-mentioned in-vitro analysis further validated the ability of IP-polyphenols inducing cell death via ROS-mediated caspase dependent pathway. Further, proteomic and phospho-proteomic analysis revealed the potential role of IP-polyphenols in the regulation of cell proliferation through MMK3, p53, p70 S6 kinase and RSK1 proteins involved in mitogen-activated protein kinase signaling pathway. Our analysis confirmed the promising role of I.pes-caprae derived polyphenols as an anti-metastatic compound against GBM cells.
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Affiliation(s)
- Monica Murugesan
- Department of Zoology, Lady Doak College, Madurai Kamaraj University, Thallakulam, Madurai 625002, India
| | - Meenakshisundaram Kandhavelu
- BioMeditech and Tays Cancer Center, Tampere University Hospital, P.O. Box 553, 33101 Tampere, Finland; Molecular Signaling Group, Faculty of Medicine and Health Technology, Tampere University, P.O. Box 553, 33101 Tampere, Finland.
| | - Ramesh Thiyagarajan
- Department of Basic Medical Sciences, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Kingdom of Saudi Arabia
| | - Sankar Natesan
- Department of Genetic Engineering, School of Biotechnology, Madurai Kamaraj University, Madurai 625021, India
| | - Priyatharsini Rajendran
- Department of Zoology, Lady Doak College, Madurai Kamaraj University, Thallakulam, Madurai 625002, India
| | - Akshaya Murugesan
- Department of Biotechnology, Lady Doak College, Madurai Kamaraj University, Thallakulam, Madurai 625002, India.
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Cui X, Ma X, Li C, Meng H, Han C. A review: structure-activity relationship between saponins and cellular immunity. Mol Biol Rep 2023; 50:2779-2793. [PMID: 36583783 DOI: 10.1007/s11033-022-08233-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 12/22/2022] [Indexed: 12/31/2022]
Abstract
Saponins, which exhibit many different biological and pharmacological activities, are present in a wide range of plant species and in some marine organisms. Notably, the researchers have found that saponins can activate the immune system in mammals. The strength of this function is closely related to the chemical structure of saponins. The present study of the structure-activity relationship suggests that aglycones, glycochains on aglycones and special functional groups of saponins affect the immune activity of saponins. This paper reviews the effects of different saponins on cellular immunity. As well as the structure-activity relationship of saponins. It is hoped that the information integrated in this paper will provide readers with information on the effects of saponins on cellular immunity and promote the further study of these compounds.
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Affiliation(s)
- Xuetao Cui
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, 250355, People's Republic of China
| | - Xumin Ma
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, 250355, People's Republic of China
| | - Chunhai Li
- Department of Radiology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Hong Meng
- Department of Radiology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Chunchao Han
- School of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, 250355, People's Republic of China.
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Majnooni MB, Fakhri S, Ghanadian SM, Bahrami G, Mansouri K, Iranpanah A, Farzaei MH, Mojarrab M. Inhibiting Angiogenesis by Anti-Cancer Saponins: From Phytochemistry to Cellular Signaling Pathways. Metabolites 2023; 13:metabo13030323. [PMID: 36984763 PMCID: PMC10052344 DOI: 10.3390/metabo13030323] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/06/2023] [Accepted: 02/16/2023] [Indexed: 02/25/2023] Open
Abstract
Saponins are one of the broadest classes of high-molecular-weight natural compounds, consisting mainly of a non-polar moiety with 27 to 30 carbons and a polar moiety containing sugars attached to the sapogenin structure. Saponins are found in more than 100 plant families as well as found in marine organisms. Saponins have several therapeutic effects, including their administration in the treatment of various cancers. These compounds also reveal noteworthy anti-angiogenesis effects as one of the critical strategies for inhibiting cancer growth and metastasis. In this study, a comprehensive review is performed on electronic databases, including PubMed, Scopus, ScienceDirect, and ProQuest. Accordingly, the structural characteristics of triterpenoid/steroid saponins and their anti-cancer effects were highlighted, focusing on their anti-angiogenic effects and related mechanisms. Consequently, the anti-angiogenic effects of saponins, inhibiting the expression of genes related to vascular endothelial growth factor (VEGF) and hypoxia-inducible factor 1-α (HIF-1α) are two main anti-angiogenic mechanisms of triterpenoid and steroidal saponins. The inhibition of inflammatory signaling pathways that stimulate angiogenesis, such as pro-inflammatory cytokines, mitogen-activated protein kinase (MAPKs), and phosphoinositide 3-kinases/protein kinase B (PI3K/Akt), are other anti-angiogenic mechanisms of saponins. Furthermore, the anti-angiogenic and anti-cancer activity of saponins was closely related to the binding site of the sugar moiety, the type and number of their monosaccharide units, as well as the presence of some functional groups in their aglycone structure. Therefore, saponins are suitable candidates for cancer treatment by inhibiting angiogenesis, for which extensive pre-clinical and comprehensive clinical trial studies are recommended.
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Affiliation(s)
- Mohammad Bagher Majnooni
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah 6714415153, Iran
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6734667149, Iran
| | - Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6734667149, Iran
| | - Syed Mustafa Ghanadian
- Department of Pharmacognosy, Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran
| | - Gholamreza Bahrami
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6734667149, Iran
| | - Kamran Mansouri
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 6714415185, Iran
| | - Amin Iranpanah
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6734667149, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6734667149, Iran
- Correspondence: or (M.H.F.); (M.M.); Tel.: +98-08334266780 (M.M.)
| | - Mahdi Mojarrab
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah 6734667149, Iran
- Correspondence: or (M.H.F.); (M.M.); Tel.: +98-08334266780 (M.M.)
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Deng H, Zhang J, Yang Q, Dong X, Zhang S, Liang W, Tan B, Chi S. Effects of Dietary Steroid Saponins on Growth Performance, Serum and Liver Glucose, Lipid Metabolism and Immune Molecules of Hybrid Groupers (♀ Epinephelus fuscoguttatus × ♂ Epinephelus lanceolatu) Fed High-Lipid Diets. Metabolites 2023; 13:metabo13020305. [PMID: 36837925 PMCID: PMC9966350 DOI: 10.3390/metabo13020305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/22/2023] Open
Abstract
High-lipid diets are attributed to excessive lipid deposition and metabolic disturbances in fish. The aim of this experiment was to investigate the effects of steroidal saponins on growth performance, immune molecules and metabolism of glucose and lipids in hybrid groupers (initial weight 22.71 ± 0.12 g) fed high-lipid diets. steroidal saponins (0%, 0.1% and 0.2%) were added to the basal diet (crude lipid, 14%) to produce three experimental diets, designated S0, S0.1 and S0.2, respectively. After an 8-week feeding trial, no significant differences were found between the S0 and S0.1 groups in percent weight gain, specific growth rate, feed conversion ratio, protein efficiency ratio and protein deposition rate (p > 0.05). All those in the S0.2 group were significantly decreased (p < 0.05). Compared to the S0 group, fish in the S0.1 group had lower contents of serum triglyceride and low-density lipoprotein cholesterol and higher high-density lipoprotein cholesterol and glucose (p < 0.05). The activities of superoxide dismutase, catalase and glutathione peroxidase were significantly higher, and malondialdehyde contents were significantly lower in the S0.1 group than in the S0 group (p < 0.05). Hepatic triglyceride, total cholesterol and glycogen were significantly lower in the S0.1 group than in the S0 group (p < 0.05). Activities of lipoprotein lipase, total lipase, glucokinase and pyruvate kinase, and gene expression of lipoprotein lipase, triglyceride lipase and glucokinase, were significantly higher in the S0.1 group than in the S0 group. Interleukin-10 mRNA expression in the S0.1 group was significantly higher than that in the S0 group, while the expression of interleukin-6 and tumor necrosis factor-α genes were significantly lower than those in the S0 group. In summary, adding 0.1% steroidal saponins to a high-lipid diet not only promoted lipolysis in fish livers, but also activated glycolysis pathways, thus enhancing the utilization of the dietary energy of the groupers, as well as supporting the fish's nonspecial immune-defense mechanism.
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Affiliation(s)
- Hongjin Deng
- Laboratory of Aquatic Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
| | - Jiacheng Zhang
- Laboratory of Aquatic Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
| | - Qihui Yang
- Laboratory of Aquatic Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
- Guangdong Engineering Technology Research Center of Aquatic Animals Precision Nutrition and High Efficiency Feed, Zhanjiang 524088, China
| | - Xiaohui Dong
- Laboratory of Aquatic Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
- Guangdong Engineering Technology Research Center of Aquatic Animals Precision Nutrition and High Efficiency Feed, Zhanjiang 524088, China
| | - Shuang Zhang
- Laboratory of Aquatic Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
- Guangdong Engineering Technology Research Center of Aquatic Animals Precision Nutrition and High Efficiency Feed, Zhanjiang 524088, China
| | - Weixing Liang
- Laboratory of Aquatic Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
- Guangdong Engineering Technology Research Center of Aquatic Animals Precision Nutrition and High Efficiency Feed, Zhanjiang 524088, China
| | - Beiping Tan
- Laboratory of Aquatic Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
- Guangdong Engineering Technology Research Center of Aquatic Animals Precision Nutrition and High Efficiency Feed, Zhanjiang 524088, China
| | - Shuyan Chi
- Laboratory of Aquatic Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang 524088, China
- Guangdong Engineering Technology Research Center of Aquatic Animals Precision Nutrition and High Efficiency Feed, Zhanjiang 524088, China
- Correspondence:
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Hansen M, Hobley TJ, Jensen PR. Treatment with Supercritical CO 2 Reduces Off-Flavour of White Alfalfa Protein Concentrate. Foods 2023; 12:foods12040845. [PMID: 36832919 PMCID: PMC9956094 DOI: 10.3390/foods12040845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023] Open
Abstract
White alfalfa protein concentrate from alfalfa (Medicago sativa) is a promising substitute for milk and egg protein due to its functionality. However, it contains many unwanted flavours that limits the amount that can be added to a food without affecting its taste negatively. In this paper, we have demonstrated a simple method for the extraction of white alfalfa protein concentrate followed by a treatment with supercritical CO2. Two concentrates were produced at lab scale and pilot scale, with yields of 0.012 g (lab scale) and 0.08 g (pilot scale), of protein per g of total protein introduced into the process. The solubility of the protein produced at lab scale and pilot scale was approximately 30% and 15%, respectively. By treating the protein concentrate at 220 bar and 45 °C for 75 min with supercritical CO2, off-flavours were lowered. The treatment did not decrease the digestibility or alter the functionality of white alfalfa protein concentrate when it was used to substitute egg in chocolate muffins and egg white in meringues.
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Li Y, Yang H, Li Z, Li S, Li J. Advances in the Biosynthesis and Molecular Evolution of Steroidal Saponins in Plants. Int J Mol Sci 2023; 24:ijms24032620. [PMID: 36768941 PMCID: PMC9917158 DOI: 10.3390/ijms24032620] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 01/31/2023] Open
Abstract
Steroidal saponins are an important type of plant-specific metabolite that are essential for plants' responses to biotic and abiotic stresses. Because of their extensive pharmacological activities, steroidal saponins are also important industrial raw materials for the production of steroidal drugs. In recent years, more and more studies have explored the biosynthesis of steroidal saponins in plants, but most of them only focused on the biosynthesis of their molecular skeleton, diosgenin, and their subsequent glycosylation modification mechanism needs to be further studied. In addition, the biosynthetic regulation mechanism of steroidal saponins, their distribution pattern, and their molecular evolution in plants remain unclear. In this review, we summarized and discussed recent studies on the biosynthesis, molecular regulation, and function of steroidal saponins. Finally, we also reviewed the distribution and molecular evolution of steroidal saponins in plants. The elucidation of the biosynthesis, regulation, and molecular evolutionary mechanisms of steroidal saponins is crucial to provide new insights and references for studying their distribution, diversity, and evolutionary history in plants. Furthermore, a deeper understanding of steroidal saponin biosynthesis will contribute to their industrial production and pharmacological applications.
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Affiliation(s)
| | | | | | | | - Jiaru Li
- Correspondence: ; Tel.: +86-27-6875-3599
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Offiong NAO, Fatunla OK, Essien JP, Yang C, Dong J. Soil washing of total petroleum and polycyclic aromatic hydrocarbons from crude oil-contaminated ultisol using aqueous extracts of waterleaf. ENVIRONMENTAL TECHNOLOGY 2023; 44:35-44. [PMID: 34353235 DOI: 10.1080/09593330.2021.1961875] [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: 04/09/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
Ultisols are acidic soils found in humid climates and are known for poor fertility. Crude oil impacted ultisols, therefore, require special treatment measures to account for nutrient loss during treatment. In this paper, we report the utilization of a food waste, aqueous extracts of waterleaf (Talinum triangulare), as a plant-derived surfactant to wash simulated crude oil-contaminated soils. The soils before and after washing were monitored for microbial loads, nutrient parameters, physicochemical characteristics, total petroleum hydrocarbons (TPHs) and polycyclic aromatic hydrocarbons (PAHs). Although higher amounts of PAHs (up to 100%) were removed compared to TPHs (up to 95.7%), the results revealed that the efficiency of the waterleaf extracts was comparable to that of a commercial surfactant sodium dodecyl sulphate. However, soils washed with the waterleaf extracts retained some significant amounts of nutrients and favourable pH moderation. In both surfactants, soil microbial loads reduced significantly. Overall, the aqueous waterleaf extracts showed potential as ecofriendly surfactants and nutrients retainer during soil washing of contaminated ultisols.
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Affiliation(s)
- Nnanake-Abasi O Offiong
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, People's Republic of China
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, People's Republic of China
- International Centre for Energy and Environmental Sustainability Research (ICEESR), University of Uyo, Uyo, Nigeria
| | - Opeyemi K Fatunla
- International Centre for Energy and Environmental Sustainability Research (ICEESR), University of Uyo, Uyo, Nigeria
- Department of Microbiology, University of Uyo, Uyo, Nigeria
| | - Joseph P Essien
- International Centre for Energy and Environmental Sustainability Research (ICEESR), University of Uyo, Uyo, Nigeria
- Department of Microbiology, University of Uyo, Uyo, Nigeria
| | - Chaoge Yang
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, People's Republic of China
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, People's Republic of China
| | - Jun Dong
- National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology, Jilin University, Changchun, People's Republic of China
- Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, People's Republic of China
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Jaiswal D, Pandey A, Agrawal M, Agrawal SB. Photosynthetic, Biochemical and Secondary Metabolite Changes in a Medicinal Plant Chlorophytum borivillianum (Safed musli) against Low and High Doses of UV-B Radiation. Photochem Photobiol 2023; 99:45-56. [PMID: 35837836 DOI: 10.1111/php.13672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/10/2022] [Indexed: 01/25/2023]
Abstract
Plants are inevitably grown in presence of sunlight, therefore bound to be exposed to natural UV-B radiation. Several studies have already been conducted with UV-B and medicinal plants and only few studies showed dose dependent variation. The present study aims to find out the variations and adaptation in Chlorophytum borivillianum under two different doses of UV-B radiation; ambient + low (3.2 kJm-2 d-1 ) and high (7.2 kJm-2 d-1 ) UV-B dose, denoted as LD and HD, respectively. Reduction in photosynthetic rate was higher at HD, while plants receiving LD displayed nonsignificant variation. During vegetative and reproductive stage, significant reduction (P ≤ 0.001) in stomatal conductance was obtained when exposed to HD-eUV-B. Fv /Fm showed more reductions in HD-eUV-B (12.6%) followed by LD-eUV-B (7.9%). Low and high doses of UV-B enhanced the anthocyanin content but the increase was significant in HD, indicates epidermal protection strategy by the plants. Under LD-eUV-B, the content of saponin, a major phytochemical constituent was enhanced by 26%. Phytochemical analysis of roots revealed reduction mostly in fatty acid components whereas the steroidal components (stigmasterol and sarsasapogenin) showed enhancement in response to LD. The study suggests the importance of LD-eUV-B in the stimulation of medicinal compounds in C. borivillianum.
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Affiliation(s)
- Deepanshi Jaiswal
- Laboratory of Air Pollution and Global Climate Change, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Avantika Pandey
- Laboratory of Air Pollution and Global Climate Change, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Madhoolika Agrawal
- Laboratory of Air Pollution and Global Climate Change, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Shashi Bhushan Agrawal
- Laboratory of Air Pollution and Global Climate Change, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, India
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Kumari Patial P, Sud D. Bioactive phytosteroids from Araucaria columnaris (G. Forst.) Hook.: RP-HPLC-DAD analysis, in-vitro antioxidant potential, in-silico computational study and molecular docking against 3MNG and 1N3U. Steroids 2022; 188:109116. [PMID: 36174751 DOI: 10.1016/j.steroids.2022.109116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 09/14/2022] [Accepted: 09/23/2022] [Indexed: 01/11/2023]
Abstract
Genus Araucaria is globally known for its medicinal, economic, and ornamental values. Most of its species have not been extensively studied yet for their chemical composition and biological activities. Therefore, the phytochemical investigation and antioxidant potential of Araucaria columnaris (G. Forst.) Hook. has been analyzed. This work aims to investigate the isolation, characterization, and antioxidant potential of bioactive compounds from the bark extract of the exemplar plant. Their structures were elucidated by virtue of physicochemical properties and spectroscopic methods. The antioxidant potential was further discussed through various assays including DFT and molecular docking. The isolation of pure compounds from bioactive extract has been carried out chromatographically. Their structures were elucidated by 1D, 2D NMR, FT-IR, UV, MS, and RP-HPLC-DAD data analysis. In vitro, the antioxidant potential was evaluated by the DRSC, FRAP, and TAC assays and in-silico studies by DFT and molecular docking. For the first time, pure compounds such as stigmasterol (IC1) and diosgenin (IC2) were isolated from the bark extract of Araucaria columnaris. In vitro antioxidant activity has been demonstrated that IC2 has higher values of DRSC, FRAP, and TAC than IC1, due to higher reactivity of IC2 than IC1 as represented by quantum reactivity parameters like lower energy gap, higher dipole moment, and higher electron-donor power. Further, antioxidant potential was also confirmed by molecular docking against two stress proteins such as 3MNG (IC2: -7.70 Kcal/mol > IC1: -7.32 Kcal/mol > ascorbic acid: -5.56 Kcal/mol) and 1N3U (heme: -12.42 Kcal/mol > IC2: -11.15 Kcal/mol > IC1: -9.45 Kcal/mol). In conclusion, the phytosteroids exhibited excellent antioxidant potential, which could enlighten their ethnomedical use. The exemplar plant offered powerful and available antioxidant besides significantly active phytoconstituents.
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Affiliation(s)
- Poonam Kumari Patial
- Department of Chemistry, Sant Longowal Institute of Engineering & Technology, SLIET (Govt. of India, Deemed University), Longowal, Sangrur 148106, Punjab, India.
| | - Dhiraj Sud
- Department of Chemistry, Sant Longowal Institute of Engineering & Technology, SLIET (Govt. of India, Deemed University), Longowal, Sangrur 148106, Punjab, India
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