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Yang Y, Cao Y, Zhu C, Jin Y, Sun H, Wang R, Li M, Zhang Z. Functional activities of three Rehmannia glutinosa enzymes: Elucidation of the Rehmannia glutinosa salidroside biosynthesis pathway in Saccharomyces cerevisiae. Gene 2024; 928:148815. [PMID: 39097208 DOI: 10.1016/j.gene.2024.148815] [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: 04/17/2024] [Revised: 07/27/2024] [Accepted: 07/30/2024] [Indexed: 08/05/2024]
Abstract
Rehmannia glutinosa produces many phenylethanoid glycoside (PhG) compounds, including salidroside, which not only possesses various biological activities but also is a core precursor of some medicinal PhGs, so it is very important to elucidate the species' salidroside biosynthesis pathway to enhance the production of salidroside and its derivations. Although some plant copper-containing amine oxidases (CuAOs), phenylacetaldehyde reductases (PARs) and UDP-glucose glucosyltransferases (UGTs) are thought to be vital catalytic enzymes involved in the downstream salidroside biosynthesis pathways, to date, none of these proteins or the associated genes in R. glutinosa have been characterized. To verify a postulated R. glutinosa salidroside biosynthetic pathway starting from tyrosine, this study identified and characterized a set of R. glutinosa genes encoding RgCuAO, RgPAR and RgUGT enzymes for salidroside biosynthesis. The functional activities of these proteins were tested in vitro by heterologous expression of these genes in Escherichia coli, confirming these catalytic abilities in these corresponding reaction steps of the biosynthetic pathway. Importantly, four enzyme-encoding genes (including the previously reported RgTyDC2 encoding tyrosine decarboxylase and the RgCuAO1, RgPAR1 and RgUGT2 genes) were cointegrated into Saccharomyces cerevisiae to reconstitute the R. glutinosa salidroside biosynthetic pathway, achieving an engineered strain that produced salidroside and validating these enzymes' catalytic functions. This study elucidates the complete R. glutinosa salidroside biosynthesis pathway from tyrosine metabolism in S. cerevisiae, establishing a basic platform for the efficient production of salidroside and its derivatives.
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Affiliation(s)
- Yanhui Yang
- School of Bioengineering, Henan University of Technology, Lianhua Street 100, Zhengzhou High-technology Zone, Henan Province 450001, China.
| | - Yiming Cao
- School of Bioengineering, Henan University of Technology, Lianhua Street 100, Zhengzhou High-technology Zone, Henan Province 450001, China
| | - Changrui Zhu
- School of Bioengineering, Henan University of Technology, Lianhua Street 100, Zhengzhou High-technology Zone, Henan Province 450001, China
| | - Yan Jin
- School of Bioengineering, Henan University of Technology, Lianhua Street 100, Zhengzhou High-technology Zone, Henan Province 450001, China
| | - Huiwen Sun
- School of Bioengineering, Henan University of Technology, Lianhua Street 100, Zhengzhou High-technology Zone, Henan Province 450001, China
| | - Rong Wang
- School of Bioengineering, Henan University of Technology, Lianhua Street 100, Zhengzhou High-technology Zone, Henan Province 450001, China
| | - Mingjie Li
- College of Crop Sciences, Fujian Agriculture and Forestry University, Jinshan Road, Cangshan District, Fuzhou 350002, China
| | - Zhongyi Zhang
- College of Crop Sciences, Fujian Agriculture and Forestry University, Jinshan Road, Cangshan District, Fuzhou 350002, China
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Hou K, Cao L, Li W, Fang ZH, Sun D, Guo Z, Zhang L. Overexpression of Rhodiola crenulata glutathione peroxidase 5 increases cold tolerance and enhances the pharmaceutical value of the hairy roots. Gene 2024; 917:148467. [PMID: 38615983 DOI: 10.1016/j.gene.2024.148467] [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: 12/28/2023] [Revised: 04/03/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024]
Abstract
Rhodiola crenulata, a plant of great medicinal value found in cold high-altitude regions, has been excessively exploited due to the difficulty in cultivation. Understanding Rhodiola crenulata's adaptation mechanisms to cold environment can provide a theoretical basis for artificial breeding. Glutathione peroxidases (GPXs), critical enzymes found in plants, play essential roles in antioxidant defense through the ascorbate-glutathione cycle. However, it is unknown whether GPX5 contributes to Rhodiola crenulata's cold tolerance. In this study, we investigated the role of GPX5 in Rhodiola crenulata's cold tolerance mechanisms. By overexpressing Rhodiola crenulata GPX5 (RcGPX5) in yeast and Arabidopsis thaliana, we observed down-regulation of Arabidopsis thaliana GPX5 (AtGPX5) and increased cold tolerance in both organisms. Furthermore, the levels of antioxidants and enzyme activities in the ascorbate-glutathione cycle were elevated, and cold-responsive genes such as AtCBFs and AtCORs were induced. Additionally, RcGPX5 overexpressing lines showed insensitivity to exogenous abscisic acid (ABA), suggesting a negative regulation of the ABA pathway by RcGPX5. RcGPX5 also promoted the expression of several thioredoxin genes in Arabidopsis and interacted with two endogenous genes of Rhodiola crenulata, RcTrx2-3 and RcTrxo1, located in mitochondria and chloroplasts. These findings suggest a significantly different model in Rhodiola crenulata compared to Arabidopsis thaliana, highlighting a complex network involving the function of RcGPX5. Moreover, overexpressing RcGPX5 in Rhodiola crenulata hairy roots positively influenced the salidroside synthesis pathway, enhancing its pharmaceutical value for doxorubicin-induced cardiotoxicity. These results suggested that RcGPX5 might be a key component for Rhodiola crenulata to adapt to cold stress and overexpressing RcGPX5 could enhance the pharmaceutical value of the hairy roots.
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Affiliation(s)
- Kai Hou
- Pu'er People's Hospital, Yunnan, China; Tianjin Chest Hospital, Tianjin, China; Chest Hospital, Tianjin University, Tianjin, China; Tianjin Medical University, Tianjin, China
| | - Lu Cao
- Tianjin Chest Hospital, Tianjin, China; Chest Hospital, Tianjin University, Tianjin, China
| | - Wen Li
- Pu'er People's Hospital, Yunnan, China
| | | | - Daqiang Sun
- Tianjin Chest Hospital, Tianjin, China; Chest Hospital, Tianjin University, Tianjin, China; Tianjin Medical University, Tianjin, China.
| | - Zhigang Guo
- Tianjin Chest Hospital, Tianjin, China; Chest Hospital, Tianjin University, Tianjin, China; Tianjin Medical University, Tianjin, China.
| | - Lipeng Zhang
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin, China.
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Cui Q, Liu Q, Fan Y, Wang C, Li Y, Li S, Zhang J, Rao G. Functional differentiation of olive PLP_deC genes: insights into metabolite biosynthesis and genetic improvement at the whole-genome level. PLANT CELL REPORTS 2024; 43:127. [PMID: 38652203 DOI: 10.1007/s00299-024-03212-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 04/01/2024] [Indexed: 04/25/2024]
Abstract
KEY MESSAGE This study identified 16 pyridoxal phosphate-dependent decarboxylases in olive at the whole-genome level, conducted analyses on their physicochemical properties, evolutionary relationships and characterized their activity. Group II pyridoxal phosphate-dependent decarboxylases (PLP_deC II) mediate the biosynthesis of characteristic olive metabolites, such as oleuropein and hydroxytyrosol. However, there have been no report on the functional differentiation of this gene family at the whole-genome level. This study conducted an exploration of the family members of PLP_deC II at the whole-genome level, identified 16 PLP_deC II genes, and analyzed their gene structure, physicochemical properties, cis-acting elements, phylogenetic evolution, and gene expression patterns. Prokaryotic expression and enzyme activity assays revealed that OeAAD2 and OeAAD4 could catalyze the decarboxylation reaction of tyrosine and dopa, resulting in the formation of their respective amine compounds, but it did not catalyze phenylalanine and tryptophan. Which is an important step in the synthetic pathway of hydroxytyrosol and oleuropein. This finding established the foundational data at the molecular level for studying the functional aspects of the olive PLP_deC II gene family and provided essential gene information for genetic improvement of olive.
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Affiliation(s)
- Qizhen Cui
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Qingqing Liu
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Yutong Fan
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Chenhe Wang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Yufei Li
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Shuyuan Li
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Jianguo Zhang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Guodong Rao
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China.
- Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China.
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China.
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Zhang DQ, Liu XY, Qiu LF, Liu ZR, Yang YP, Huang L, Wang SY, Zhang JQ. Two chromosome-level genome assemblies of Rhodiola shed new light on genome evolution in rapid radiation and evolution of the biosynthetic pathway of salidroside. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 117:464-482. [PMID: 37872890 DOI: 10.1111/tpj.16501] [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: 06/20/2023] [Revised: 09/29/2023] [Accepted: 10/04/2023] [Indexed: 10/25/2023]
Abstract
Rhodiola L. is a genus that has undergone rapid radiation in the mid-Miocene and may represent a typic case of adaptive radiation. Many species of Rhodiola have also been widely used as an important adaptogen in traditional medicines for centuries. However, a lack of high-quality chromosome-level genomes hinders in-depth study of its evolution and biosynthetic pathway of secondary metabolites. Here, we assembled two chromosome-level genomes for two Rhodiola species with different chromosome number and sexual system. The assembled genome size of R. chrysanthemifolia (2n = 14; hermaphrodite) and R. kirilowii (2n = 22; dioecious) were of 402.67 and 653.62 Mb, respectively, with approximately 57.60% and 69.22% of transposable elements (TEs). The size difference between the two genomes was mostly due to proliferation of long terminal repeat-retrotransposons (LTR-RTs) in the R. kirilowii genome. Comparative genomic analysis revealed possible gene families responsible for high-altitude adaptation of Rhodiola, including a homolog of plant cysteine oxidase 2 gene of Arabidopsis thaliana (AtPCO2), which is part of the core molecular reaction to hypoxia and contributes to the stability of Group VII ethylene response factors (ERF-VII). We found extensive chromosome fusion/fission events and structural variations between the two genomes, which might have facilitated the initial rapid radiation of Rhodiola. We also identified candidate genes in the biosynthetic pathway of salidroside. Overall, our results provide important insights into genome evolution in plant rapid radiations, and possible roles of chromosome fusion/fission and structure variation played in rapid speciation.
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Affiliation(s)
- Dan-Qing Zhang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
| | - Xiao-Ying Liu
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
| | - Lin-Feng Qiu
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
| | - Zhao-Rui Liu
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
| | - Ya-Peng Yang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
| | - Long Huang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
| | - Shi-Yu Wang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
| | - Jian-Qiang Zhang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
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Malarz J, Yudina YV, Stojakowska A. Hairy Root Cultures as a Source of Phenolic Antioxidants: Simple Phenolics, Phenolic Acids, Phenylethanoids, and Hydroxycinnamates. Int J Mol Sci 2023; 24:ijms24086920. [PMID: 37108084 PMCID: PMC10138958 DOI: 10.3390/ijms24086920] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 04/29/2023] Open
Abstract
Plant-derived antioxidants are intrinsic components of human diet and factors implicated in tolerance mechanisms against environmental stresses in both plants and humans. They are being used as food preservatives and additives or ingredients of cosmetics. For nearly forty years, Rhizobium rhizogenes-transformed roots (hairy roots) have been studied in respect to their usability as producers of plant specialized metabolites of different, primarily medical applications. Moreover, the hairy root cultures have proven their value as a tool in crop plant improvement and in plant secondary metabolism investigations. Though cultivated plants remain a major source of plant polyphenolics of economic importance, the decline in biodiversity caused by climate changes and overexploitation of natural resources may increase the interest in hairy roots as a productive and renewable source of biologically active compounds. The present review examines hairy roots as efficient producers of simple phenolics, phenylethanoids, and hydroxycinnamates of plant origin and summarizes efforts to maximize the product yield. Attempts to use Rhizobium rhizogenes-mediated genetic transformation for inducing enhanced production of the plant phenolics/polyphenolics in crop plants are also mentioned.
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Affiliation(s)
- Janusz Malarz
- Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna Street 12, 31-343 Kraków, Poland
| | - Yulia V Yudina
- Educational and Scientific Medical Institute, National Technical University "Kharkiv Polytechnic Institute", Kyrpychova Street 2, 61002 Kharkiv, Ukraine
| | - Anna Stojakowska
- Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna Street 12, 31-343 Kraków, Poland
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Velotti F, Bernini R. Hydroxytyrosol Interference with Inflammaging via Modulation of Inflammation and Autophagy. Nutrients 2023; 15:nu15071774. [PMID: 37049611 PMCID: PMC10096543 DOI: 10.3390/nu15071774] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/29/2023] [Accepted: 04/01/2023] [Indexed: 04/14/2023] Open
Abstract
Inflammaging refers to a chronic, systemic, low-grade inflammation, driven by immune (mainly macrophages) and non-immune cells stimulated by endogenous/self, misplaced or altered molecules, belonging to physiological aging. This age-related inflammatory status is characterized by increased inflammation and decreased macroautophagy/autophagy (a degradation process that removes unnecessary or dysfunctional cell components). Inflammaging predisposes to age-related diseases, including obesity, type-2 diabetes, cancer, cardiovascular and neurodegenerative disorders, as well as vulnerability to infectious diseases and vaccine failure, representing thus a major target for anti-aging strategies. Phenolic compounds-found in extra-virgin olive oil (EVOO)-are well known for their beneficial effect on longevity. Among them, hydroxytyrosol (HTyr) appears to greatly contribute to healthy aging by its documented potent antioxidant activity. In addition, HTyr can modulate inflammation and autophagy, thus possibly counteracting and reducing inflammaging. In this review, we reference the literature on pure HTyr as a modulatory agent of inflammation and autophagy, in order to highlight its possible interference with inflammaging. This HTyr-mediated activity might contribute to healthy aging and delay the development or progression of diseases related to aging.
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Affiliation(s)
- Francesca Velotti
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| | - Roberta Bernini
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, Via S. Camillo de Lellis, 01100 Viterbo, Italy
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Liu Y, Liu Q, Li X, Tang Z, Zhang Z, Gao H, Ma F, Li C. Exogenous Dopamine and MdTyDC Overexpression Enhance Apple Resistance to Fusarium solani. PHYTOPATHOLOGY 2022; 112:2503-2513. [PMID: 35801852 DOI: 10.1094/phyto-04-22-0142-r] [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: 06/15/2023]
Abstract
Fusarium solani, one of the main pathogenic fungi involved in apple replant disease (ARD), is a serious threat to apple growth and development. Dopamine and tyrosine decarboxylase (TyDC), a key enzyme in the dopamine synthesis pathway, have been reported to play an active role in plant responses to biotic and abiotic stresses, but little is known about the functions of dopamine and Malus domestica TyDC (MdTyDC) in the interaction between F. solani and apple roots. In this study, seedlings treated with exogenous dopamine and apple plants overexpressing MdTyDC were inoculated with F. solani; both treatments reduced the root system damage caused by F. solani. After inoculation with F. solani, exogenous dopamine increased dopamine content in the seedlings; alleviated the inhibition of biomass accumulation; increased root metabolic activity, photosynthetic efficiency, and antioxidant enzyme activities; reduced reactive oxygen species accumulation; and upregulated the expression of genes encoding chitinase, β-1,3-glucanase, and pathogenesis-related proteins. Similar results were observed in MdTyDC-overexpressing apple plants. In addition, the overexpression of MdTyDC increased tyramine content and the deposition of cell wall-bound amines in roots. Overall, our results reveal that exogenous dopamine and overexpression of MdTyDC enhance apple resistance to F. solani, which is an important application for the prevention of ARD.
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Affiliation(s)
- Yusong Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Qianwei Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Xuewen Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Zhongwen Tang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Zhijun Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Hanbing Gao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Chao Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, China
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Rattan S, Kumar P, Kaur E, Sood A, Acharya V, Warghat AR. Comparative transcriptome and tissue-specific expression analysis of genes reveal tissue-cultured plants as an alternative source for phenylethanoids and phenylpropanoids in Rhodiola imbricata (Edgew.). Gene X 2022; 836:146672. [PMID: 35714804 DOI: 10.1016/j.gene.2022.146672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/30/2022] [Accepted: 06/10/2022] [Indexed: 11/29/2022] Open
Abstract
Rhodiola imbricata (Crassulaceae) is a traditional trans-Himalayan endangered medicinal herb with immense therapeutic applications. Over the years, over-exploitation, un-managed harvesting, and lack of captive cultivation procedures persuaded threat to its wild habitat. Plant tissue culture and RNA-Seq-based molecular bioprospection of key regulatory genes aid the understanding of molecular dynamics involved in specialized metabolites (phenylethanoids and phenylpropanoids) biosynthesis and its sustainable production. Hence, comparative transcriptomic analysis was performed using leaf and root tissues from the wild and tissue-cultured plants, revealing tissue-specific production of salidroside and rosavin. The transcriptome profiling resulted in 345 million high-quality reads yielding 92,380 unique transcripts with an N50 of 1260 bp. Tissue-specific gene expression analysis revealed that both phenylethanoids and phenylpropanoids biosynthesis are predominantly associated with the shikimate pathway. In addition to RNA-Seq data, the downstream biosynthesis pathways genes viz., phospho-2-dehydro-3-deoxyheptonate aldolase (DAHPS), 3-dehydroquinate synthase (DHQS), shikimate kinase (SK), chorismate mutase (CM), arogenate dehydrogenase (TYRAAT), aromatic-L-amino-acid decarboxylase (TDC), phenylalanine ammonia-lyase (PAL), 4-coumarate-CoA ligase (4-CL), cinnamoyl-CoA reductase (CCR), and cinnamyl alcohol dehydrogenase (CAD) showed higher expression pattern in wild plant tissues compared to tissue-cultured plants. The transcript fold expression determined by RT-qPCR results followed similar patterns as those observed in RNA-seq and targeted metabolite profiling data. Salidroside and rosavin content in wild plants exhibited 2.40 fold and 1.77 fold increase accumulation compared to the tissue-cultured plant. The present investigation explained the tissue and condition-specific significant differences between the expression of proposed biosynthetic pathway genes and salidroside and rosavin content. Additionally, NAC, bHLH, and ARF were the most abundant transcription factor families found in the transcriptomic analysis of R. imbricata. The generated transcriptome dataset provides a valuable gene(s)/transcription factors hub that can be used for the sustainable production of salidroside and rosavin in R. imbricata under tissue culture conditions.
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Affiliation(s)
- Shiv Rattan
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pankaj Kumar
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India
| | - Ekjot Kaur
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Archit Sood
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India
| | - Vishal Acharya
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ashish R Warghat
- Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Liu S, Xia Y, Yang H, Shen W, Chen X. Rational chromosome engineering of Escherichia coli for overproduction of salidroside. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Xu B, Chen B, Qi X, Liu S, Zhao Y, Tang C, Meng X. Genome-wide Identification and Expression Analysis of RcMYB Genes in Rhodiola crenulata. Front Genet 2022; 13:831611. [PMID: 35432456 PMCID: PMC9008588 DOI: 10.3389/fgene.2022.831611] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/21/2022] [Indexed: 11/15/2022] Open
Abstract
Modern research has proved that the main medicinal component of Rhodiola crenulata, which has a wide range of medicinal value, is its secondary metabolite salidroside. The MYB transcription factor family is widely involved in biosynthesis of second metabolism and other roles in the stress response in plants, so a genome-wide identification and analysis for this family in R. crenulata is worth conducting. In this research, genome-wide analysis identified 139 MYB genes based on conserved domains in the R. crenulata genome, and 137 genes were used to construct a phylogenetic tree and modified with expression files to reveal evolutionary characteristics. Physical and chemical characteristics, gene structure, and conserved motif analysis were also used to further analyze RcMYBs. Additionally, cis-acting elements related to transcription, hormone, and MYB binding were found in the promoter region of the selected RcMYBs. Four RcMYBs were cloned, sequenced, and their gene expression pattern was analyzed for further analysis of their functions. The research results lay the foundation for further research on the function of RcMYB and R. crenulata.
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Affiliation(s)
- Binjie Xu
- Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- China Resources Sanjiu (Ya’an) Pharmaceutical Co., Ltd., Ya’an, China
- *Correspondence: Binjie Xu, ; Xianli Meng,
| | - Bang Chen
- School of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoli Qi
- School of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shunli Liu
- School of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yibing Zhao
- School of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ce Tang
- Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xianli Meng
- Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Binjie Xu, ; Xianli Meng,
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11
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Yang YH, Yang MR, Zhu JY, Dong KW, Yi YJ, Li RF, Zeng L, Zhang CF. Functional characterization of tyrosine decarboxylase genes that contribute to acteoside biosynthesis in Rehmannia glutinosa. PLANTA 2022; 255:64. [PMID: 35147783 DOI: 10.1007/s00425-022-03849-8] [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: 09/15/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
The RgTyDCs possess typical decarboxylase functional activity in vitro and in vivo and participate in acteoside biosynthesis in R. glutinosa, positively controlling its production via activated acteoside/tyrosine-derived pathways. Acteoside is an important ingredient in Rehmannia glutinosa and an active natural component that contributes to human health. Tyrosine decarboxylase (TyDC) is thought to play an important role in acteoside biosynthesis. Several plant TyDC family genes have been functionally characterized and shown to play roles in some bioactive metabolites' biosynthesis by mediating the decarboxylation of L-tyrosine and L-dihydroxyphenylalanine (L-DOPA); however, one TyDC (named RgTyDC1) in R. glutinosa has been identified to date, but the family genes that contribute to acteoside biosynthesis remain largely characterized. Here, by in silico and experimental analyses, we isolated and identified three RgTyDCs (RgTyDC2 to RgTyDC4) in this species; these genes' sequences showed 50.92-82.55% identity, included highly conserved domains with homologues in other plants, classified into two subsets, and encoded proteins that localized to the cytosol. Enzyme kinetic analyses of RgTyDC2 and RgTyDC4 indicated that they both efficiently catalysed L-tyrosine and L-dopa. The overexpression of RgTyDC2 and RgTyDC4 in R. glutinosa, which was associated with enhanced TyDC activity, significantly increased tyramine and dopamine contents, which was positively correlated with improved acteoside production; moreover, the overexpression of RgTyDCs led to upregulated expression of some other genes-related to acteoside biosynthesis. This result suggested that the overexpression of RgTyDCs can positively activate the molecular networks of acteoside pathways, enhancing the accumulation of tyramine and dopamine, and promoting end-product acteoside biosynthesis. Our findings provide an evidence that RgTyDCs play vital molecular roles in acteoside biosynthesis pathways, contributing to the increase in acteoside yield in R. glutinosa.
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Affiliation(s)
- Yan Hui Yang
- College of Bioengineering, Henan University of Technology, Lianhua Street 100, High-Technology Zone, Zhengzhou, 450001, Henan, China.
| | - Mu Rong Yang
- College of Bioengineering, Henan University of Technology, Lianhua Street 100, High-Technology Zone, Zhengzhou, 450001, Henan, China
| | - Jian Yu Zhu
- College of Bioengineering, Henan University of Technology, Lianhua Street 100, High-Technology Zone, Zhengzhou, 450001, Henan, China
| | - Ke Wei Dong
- College of Bioengineering, Henan University of Technology, Lianhua Street 100, High-Technology Zone, Zhengzhou, 450001, Henan, China
| | - Yan Jie Yi
- College of Bioengineering, Henan University of Technology, Lianhua Street 100, High-Technology Zone, Zhengzhou, 450001, Henan, China
| | - Rui Fang Li
- College of Bioengineering, Henan University of Technology, Lianhua Street 100, High-Technology Zone, Zhengzhou, 450001, Henan, China
| | - Lei Zeng
- College of Bioengineering, Henan University of Technology, Lianhua Street 100, High-Technology Zone, Zhengzhou, 450001, Henan, China
| | - Chang Fu Zhang
- College of Bioengineering, Henan University of Technology, Lianhua Street 100, High-Technology Zone, Zhengzhou, 450001, Henan, China
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12
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Sánchez R, Bahamonde C, Sanz C, Pérez AG. Identification and Functional Characterization of Genes Encoding Phenylacetaldehyde Reductases That Catalyze the Last Step in the Biosynthesis of Hydroxytyrosol in Olive. PLANTS 2021; 10:plants10071268. [PMID: 34206363 PMCID: PMC8309162 DOI: 10.3390/plants10071268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/14/2021] [Accepted: 06/17/2021] [Indexed: 01/12/2023]
Abstract
Hydroxytyrosol derivatives are the most important phenolic components in virgin olive oil due to their well-demonstrated biological activities. In this regard, two phenyl acetaldehyde reductase genes, OePAR1.1 and OePAR1.2, involved in hydroxytyrosol synthesis, have been identified from an olive transcriptome. Both genes were synthesized and expressed in Escherichia coli, and their encoded proteins were purified. The recombinant enzymes display high substrate specificity for 2,4-dihydroxyphenylacetaldehyde (3,4-DHPAA) to form hydroxytyrosol. The reaction catalyzed by OePAR constitutes the second, and last, biochemical step in the formation of hydroxytyrosol from the amino acid L-3,4-dihydroxyphenylalanine (L-DOPA) in olive. OePAR1.1 and OePAR1.2 enzymes exhibit high thermal stability, similar pH optima (pH 6.5), and high affinity for 3,4-DHPAA (apparent Km 0.6 and 0.8 µmol min−1 mg−1, respectively). However, OePAR1.2 exhibited higher specific activity and higher expression levels in all the olive cultivars under study. The expression analyses indicate that both OePAR1.1 and OePAR1.2 genes are temporally regulated in a cultivar-dependent manner. The information provided here could be of interest for olive breeding programs searching for new olive genotypes with the capacity to produce oils with higher levels of hydroxytyrosol derivatives.
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Delli-Ponti R, Shivhare D, Mutwil M. Using Gene Expression to Study Specialized Metabolism-A Practical Guide. FRONTIERS IN PLANT SCIENCE 2021; 11:625035. [PMID: 33510763 PMCID: PMC7835209 DOI: 10.3389/fpls.2020.625035] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 11/30/2020] [Indexed: 05/25/2023]
Abstract
Plants produce a vast array of chemical compounds that we use as medicines and flavors, but these compounds' biosynthetic pathways are still poorly understood. This paucity precludes us from modifying, improving, and mass-producing these specialized metabolites in suitable bioreactors. Many of the specialized metabolites are expressed in a narrow range of organs, tissues, and cell types, suggesting a tight regulation of the responsible biosynthetic pathways. Fortunately, with unprecedented ease of generating gene expression data and with >200,000 publicly available RNA sequencing samples, we are now able to study the expression of genes from hundreds of plant species. This review demonstrates how gene expression can elucidate the biosynthetic pathways by mining organ-specific genes, gene expression clusters, and applying various types of co-expression analyses. To empower biologists to perform these analyses, we showcase these analyses using recently published, user-friendly tools. Finally, we analyze the performance of co-expression networks and show that they are a valuable addition to elucidating multiple the biosynthetic pathways of specialized metabolism.
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Affiliation(s)
| | | | - Marek Mutwil
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
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14
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Liu X, Jin Y, Tan K, Zheng J, Gao T, Zhang Z, Zhao Y, Ma F, Li C. MdTyDc Overexpression Improves Alkalinity Tolerance in Malus domestica. FRONTIERS IN PLANT SCIENCE 2021; 12:625890. [PMID: 33664760 PMCID: PMC7921794 DOI: 10.3389/fpls.2021.625890] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/27/2021] [Indexed: 05/21/2023]
Abstract
Tyrosine is decarboxylated to tyramine by TYDC (Tyrosine decarboxylase) and then hydroxylated to dopamine, which is involved in plant response to abiotic stress. However, little is known about the function of MdTyDc in response to alkaline stress in plants. In our study, it was found that the expression of MdTyDc was induced by alkaline stress. Therefore, the apple plants overexpressing MdTyDc was treated with alkali stress, and we found that MdTyDc played an important role in apple plants' resistance to alkali stress. Our results showed that the restriction on the growth, the decrease of membrane permeability and the accumulation of Na+ were alleviated to various degrees in MdTyDc transgenic plants under alkali stress. In addition, overexpression of MdTyDc enhanced the root activity and photosynthetic capacity, and improved the enzyme activity related to N metabolism, thus promoting N absorption. It is noteworthy that the dopamine content of these three transgenic lines is significantly higher than that of WT. In summary, these findings indicated that MdTyDc may enhance alkaline tolerance of apples by mediating dopamine content, mainly by maintaining high photosynthetic capacity, normal ion homeostasis and strong nitrogen absorption capacity.
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15
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Magani SKJ, Mupparthi SD, Gollapalli BP, Shukla D, Tiwari AK, Gorantala J, Yarla NS, Tantravahi S. Salidroside - Can it be a Multifunctional Drug? Curr Drug Metab 2020; 21:512-524. [PMID: 32520682 DOI: 10.2174/1389200221666200610172105] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/29/2020] [Accepted: 03/14/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Salidroside is a glucoside of tyrosol found mostly in the roots of Rhodiola spp. It exhibits diverse biological and pharmacological properties. In the last decade, enormous research is conducted to explore the medicinal properties of salidroside; this research reported many activities like anti-cancer, anti-oxidant, anti-aging, anti-diabetic, anti-depressant, anti-hyperlipidemic, anti-inflammatory, immunomodulatory, etc. Objective: Despite its multiple pharmacological effects, a comprehensive review detailing its metabolism and therapeutic activities is still missing. This review aims to provide an overview of the metabolism of salidroside, its role in alleviating different metabolic disorders, diseases and its molecular interaction with the target molecules in different conditions. This review mostly concentrates on the metabolism, biological activities and molecular pathways related to various pharmacological activities of salidroside. CONCLUSION Salidroside is produced by a three-step pathway in the plants with tyrosol as an intermediate molecule. The molecule is biotransformed into many metabolites through phase I and II pathways. These metabolites, together with a certain amount of salidroside may be responsible for various pharmacological functions. The salidroside based inhibition of PI3k/AKT, JAK/ STAT, and MEK/ERK pathways and activation of apoptosis and autophagy are the major reasons for its anti-cancer activity. AMPK pathway modulation plays a significant role in its anti-diabetic activity. The neuroprotective activity was linked with decreased oxidative stress and increased antioxidant enzymes, Nrf2/HO-1 pathways, decreased inflammation through suppression of NF-κB pathway and PI3K/AKT pathways. These scientific findings will pave the way to clinically translate the use of salidroside as a multi-functional drug for various diseases and disorders in the near future.
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Affiliation(s)
| | | | | | - Dhananjay Shukla
- Department of Biotechnology, Guru Ghasidas Vishwavidyalaya, Bilaspur, India
| | - A K Tiwari
- Department of Zoology, Dr. Bhanvar Singh Porte Government College, Pendra Bilaspur, India
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16
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Shi M, Liao P, Nile SH, Georgiev MI, Kai G. Biotechnological Exploration of Transformed Root Culture for Value-Added Products. Trends Biotechnol 2020; 39:137-149. [PMID: 32690221 DOI: 10.1016/j.tibtech.2020.06.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 02/09/2023]
Abstract
Medicinal plants produce valuable secondary metabolites with anticancer, analgesic, anticholinergic or other activities, but low metabolite levels and limited available tissue restrict metabolite yields. Transformed root cultures, also called hairy roots, provide a feasible approach for producing valuable secondary metabolites. Various strategies have been used to enhance secondary metabolite production in hairy roots, including increasing substrate availability, regulating key biosynthetic genes, multigene engineering, combining genetic engineering and elicitation, using transcription factors (TFs), and introducing new genes. In this review, we focus on recent developments in hairy roots from medicinal plants, techniques to boost production of desired secondary metabolites, and the development of new technologies to study these metabolites. We also discuss recent trends, emerging applications, and future perspectives.
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Affiliation(s)
- Min Shi
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 311402, China
| | - Pan Liao
- Department of Biochemistry, Purdue University, 175 South University Street, West Lafayette, IN 47907-2063, USA
| | - Shivraj Hariram Nile
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 311402, China
| | - Milen I Georgiev
- Laboratory of Metabolomics, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 139 Ruski Blvd, 4000 Plovdiv, Bulgaria; Center of Plant Systems Biology and Biotechnology, 4000 Plovdiv, Bulgaria.
| | - Guoyin Kai
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, 311402, China.
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17
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Fan F, Yang L, Li R, Zou X, Li N, Meng X, Zhang Y, Wang X. Salidroside as a potential neuroprotective agent for ischemic stroke: a review of sources, pharmacokinetics, mechanism and safety. Biomed Pharmacother 2020; 129:110458. [PMID: 32603893 DOI: 10.1016/j.biopha.2020.110458] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/17/2020] [Accepted: 06/23/2020] [Indexed: 02/06/2023] Open
Abstract
Salidroside (Sal) is a bioactive extract principally from traditional herbal medicine such as Rhodiola rosea L., which has been commonly used for hundreds of years in Asia countries. The excellent neuroprotective capacity of Sal has been illuminated in recent studies. This work focused on the source, pharmacokinetics, safety and anti-ischemic stroke (IS) effect of Sal, especially emphasizing its mechanism of action and BBB permeability. Extensive databases, including Pubmed, Web of science (WOS), Google Scholar and China National Knowledge Infrastructure (CNKI), were applied to obtain relevant online literatures. Sal exerts powerful therapeutic effects on IS in experimental models either in vitro or in vivo due to its neuroprotection, with significantly diminishing infarct size, preventing cerebral edema and improving neurological function. Also, the findings suggest the underlying mechanisms involve anti-oxidation, anti-inflammation and anti-apoptosis by regulating multiple signaling pathways and key molecules, such as NF-κB, TNF-α and PI3K/Akt pathway. In pharmacokinetics, although showing a rapid absorption and elimination, bioavailability of Sal is elevated under some non-physiological conditions. The component and its metabolite (tyrosol) are capable of distributing to brain tissue and the later keeps a higher level of concentration. Moreover, Sal scarcely has obvious toxicity or side effects in a variety of animal experiments and clinical trials, but combination of drugs and perinatal use of medicine should be taken more attentions. Finally, as an active ingredient, not only is Sal isolated from diverse plants with limited yield, but also large batches of the products can be harvested by biological and chemical synthesis. With higher efficacy and better safety profiles, Sal could sever as a promising neuroprotectant for preventing and treating IS. Nevertheless, further investigations are still required to explore the pharmacodynamic and pharmacokinetic properties of Sal in the treatment of IS.
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Affiliation(s)
- Fangfang Fan
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Lu Yang
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Rui Li
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xuemei Zou
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Ning Li
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xianli Meng
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Yi Zhang
- Ethnic Medicine Academic Heritage Innovation Research Center, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiaobo Wang
- Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
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18
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Mohammadi M, Mashayekh T, Rashidi-Monfared S, Ebrahimi A, Abedini D. New insights into diosgenin biosynthesis pathway and its regulation in Trigonella foenum-graecum L. PHYTOCHEMICAL ANALYSIS : PCA 2020; 31:229-241. [PMID: 31469464 DOI: 10.1002/pca.2887] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 07/17/2019] [Accepted: 07/21/2019] [Indexed: 05/05/2023]
Abstract
INTRODUCTION Throughout history, thousands of medicinal and aromatic plants have been widely utilised by people worldwide. Owing to them possessing of valuable compounds with little side effects in comparison with chemical drugs, herbs have been of interest to humans for a number of purposes. Diosgenin, driven from fenugreek, Trigonella foenum-graecum L., has extensively drawn scientist's attention owing to having curable properties and being a precursor of steroid hormones synthesis. Nonetheless, complete knowledge about the biosynthesis pathway of this metabolite is still elusive. OBJECTIVE In the present research, we isolated the full-length CDS of 14 genes involving in diosgenin formation and measured their expression rate in various genotypes, which had illustrated different amount of diosgenin. METHODOLOGY The genes were successfully isolated, and functional motifs were also assessed using in silico approaches. RESULTS Moreover, combining transcript and metabolite analysis revealed that there are many genes playing the role in diosgenin formation, some of which are highly influential. Among them, ∆24 -reductase, which converts cycloartenol to cycloartanol, is the first-committed and rate-limiting enzyme in this pathway. Additionally, no transcripts indicating to the presence or expression of lanosterol synthase were detected, contradicting the previous hypothesis about the biosynthetic pathway of diosgenin in fenugreek. CONCLUSION Considering all these, therefore, we propose the most possible pathway of diosgenin. This knowledge will then pave the way toward cloning the genes as well as engineering the diosgenin biosynthesis pathway.
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Affiliation(s)
- Mohammad Mohammadi
- Agricultural Biotechnology Department, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Tooba Mashayekh
- Agricultural Biotechnology Department, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Sajad Rashidi-Monfared
- Agricultural Biotechnology Department, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Amin Ebrahimi
- Agronomy and Plant Breeding Department, Faculty of Agriculture, Shahrood University of Technology, Semnan, Iran
| | - Davar Abedini
- Agricultural Biotechnology Department, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
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19
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Xie H, Shen CY, Jiang JG. The sources of salidroside and its targeting for multiple chronic diseases. J Funct Foods 2020. [DOI: 10.1016/j.jff.2019.103648] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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20
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An Aromatic Aldehyde Synthase Controls the Synthesis of Hydroxytyrosol Derivatives Present in Virgin Olive Oil. Antioxidants (Basel) 2019; 8:antiox8090352. [PMID: 31480559 PMCID: PMC6770214 DOI: 10.3390/antiox8090352] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/20/2019] [Accepted: 08/22/2019] [Indexed: 01/30/2023] Open
Abstract
The phenolic composition of virgin olive oil (VOO) is strongly determined by the content and distribution of secoiridoid phenolic glucosides present in the olive fruit. Among them, oleuropein is the most abundant in olive mesocarp and is characterized by containing an hydroxytyrosol residue in its chemical structure. Hydroxytyrosol-containing molecules are those that exhibit the most important biological activities in virgin olive oil. In this regard, we identified an aromatic aldehyde synthase gene (OeAAS) from an olive transcriptome, which was synthesized, expressed in Eschrichia coli, and purified its encoded protein. The recombinant OeAAS is a bifunctional enzyme catalyzing decarboxylation and amine-oxidation reactions in a single step. OeAAS displays strict substrate specificity for l-DOPA to form 2,4-dihydroxyphenylacetaldehyde, the immediate precursor of hydroxytyrosol. In addition to the biochemical characterization of the enzyme, the expression analysis carried out in different olive cultivars and ripening stages indicate that OeAAS gene is temporally regulated in a cultivar-dependent manner. High correlation coefficients were found between OeAAS expression levels and the phenolic content of olive fruits and oils, which supports a key role for OeAAS in the accumulation of hydroxytyrosol-derived secoiridoid compounds in olive fruit and virgin olive oil.
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Mirmazloum I, Ladányi M, Beinrohr L, Kiss-Bába E, Kiss A, György Z. Identification of a novel UDP-glycosyltransferase gene from Rhodiola rosea and its expression during biotransformation of upstream precursors in callus culture. Int J Biol Macromol 2019; 136:847-858. [PMID: 31226374 DOI: 10.1016/j.ijbiomac.2019.06.086] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 05/21/2019] [Accepted: 06/12/2019] [Indexed: 12/20/2022]
Abstract
Roseroot (Rhodiola rosea L.) is a medicinal plant with adaptogenic properties and several pharmaceutically important metabolites. In this study, a full length cDNA encoding a UDPG gene of roseroot was identified, cloned and characterized. Its ORF (1425 bp) was transferred into E. coli, where the expression of the recombinant enzyme was confirmed. To monitor the enzyme activity, 3 precursors (tyramine, 4-hydroxyphenylpyruvate & tyrosol) of salidroside biosynthesis pathway were added to roseroot callus cultures and samples were harvested after 1, 6, 12, 24, 48 & 96 h. Along with the controls (without precursor feeding), each sample was subjected to HPLC and qRT-PCR for phytochemical and relative UDP-glycosyltransferase gene expression analysis, respectively. The HPLC analysis showed that the salidroside content significantly increased; reaching 0.5% of the callus dry weight (26-fold higher than the control) after 96 h when 2 mM tyrosol was given to the media. The expression of the UDP-glycosyltransferase increased significantly being the highest at 12 h after the feeding. The effect of tyramine and 4-hydroxyphenylpyruvate was not as pronounced as of tyrosol. Here, we introduce a R. rosea specific UDPG gene and its expression pattern after biotransformation of intermediate precursors in in vitro roseroot callus cultures.
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Affiliation(s)
- Iman Mirmazloum
- Department of Plant Physiology and Plant Biochemistry, Szent István University, Budapest, Hungary; Food Science Innovation Centre, Kaposvár University, Kaposvár, Hungary.
| | - Márta Ladányi
- Department of Biometrics and Agricultural Informatics, Szent István University, Budapest, Hungary
| | - László Beinrohr
- Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Erzsébet Kiss-Bába
- Department of Plant Physiology and Plant Biochemistry, Szent István University, Budapest, Hungary
| | - Attila Kiss
- Food Science Innovation Centre, Kaposvár University, Kaposvár, Hungary
| | - Zsuzsanna György
- Department of Genetics and Plant Breeding, Szent István University, Budapest, Hungary
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Kallscheuer N, Menezes R, Foito A, da Silva MH, Braga A, Dekker W, Sevillano DM, Rosado-Ramos R, Jardim C, Oliveira J, Ferreira P, Rocha I, Silva AR, Sousa M, Allwood JW, Bott M, Faria N, Stewart D, Ottens M, Naesby M, Nunes Dos Santos C, Marienhagen J. Identification and Microbial Production of the Raspberry Phenol Salidroside that Is Active against Huntington's Disease. PLANT PHYSIOLOGY 2019; 179:969-985. [PMID: 30397021 PMCID: PMC6393794 DOI: 10.1104/pp.18.01074] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 10/22/2018] [Indexed: 05/22/2023]
Abstract
Edible berries are considered to be among nature's treasure chests as they contain a large number of (poly)phenols with potentially health-promoting properties. However, as berries contain complex (poly)phenol mixtures, it is challenging to associate any interesting pharmacological activity with a single compound. Thus, identification of pharmacologically interesting phenols requires systematic analyses of berry extracts. Here, raspberry (Rubus idaeus, var Prestige) extracts were systematically analyzed to identify bioactive compounds against pathological processes of neurodegenerative diseases. Berry extracts were tested on different Saccharomyces cerevisiae strains expressing disease proteins associated with Alzheimer's, Parkinson's, or Huntington's disease, or amyotrophic lateral sclerosis. After identifying bioactivity against Huntington's disease, the extract was fractionated and the obtained fractions were tested in the yeast model, which revealed that salidroside, a glycosylated phenol, displayed significant bioactivity. Subsequently, a metabolic route to salidroside was reconstructed in S cerevisiae and Corynebacterium glutamicum The best-performing S cerevisiae strain was capable of producing 2.1 mm (640 mg L-1) salidroside from Glc in shake flasks, whereas an engineered C glutamicum strain could efficiently convert the precursor tyrosol to salidroside, accumulating up to 32 mm (9,700 mg L-1) salidroside in bioreactor cultivations (yield: 0.81 mol mol-1). Targeted yeast assays verified that salidroside produced by both organisms has the same positive effects as salidroside of natural origin.
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Affiliation(s)
- Nicolai Kallscheuer
- Institut für Bio- und Geowissenschaften (IBG-1: Biotechnologie), Forschungszentrum Jülich, Jülich 52428, Germany
| | - Regina Menezes
- Instituto de Biologia Experimental e Tecnológica (iBET), 2781-901 Oeiras, Portugal
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
| | - Alexandre Foito
- The James Hutton Institute, Invergowrie, DD2 5DA Dundee, Scotland, United Kingdom
| | | | - Adelaide Braga
- Biotempo, 4805-017 Guimarães, Portugal
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | | | - David Méndez Sevillano
- Department of Biotechnology, Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Rita Rosado-Ramos
- Instituto de Biologia Experimental e Tecnológica (iBET), 2781-901 Oeiras, Portugal
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
| | - Carolina Jardim
- Instituto de Biologia Experimental e Tecnológica (iBET), 2781-901 Oeiras, Portugal
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
| | - Joana Oliveira
- Biotempo, 4805-017 Guimarães, Portugal
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Patrícia Ferreira
- Biotempo, 4805-017 Guimarães, Portugal
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Isabel Rocha
- Biotempo, 4805-017 Guimarães, Portugal
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Ana Rita Silva
- Biotempo, 4805-017 Guimarães, Portugal
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Márcio Sousa
- Biotempo, 4805-017 Guimarães, Portugal
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - J William Allwood
- The James Hutton Institute, Invergowrie, DD2 5DA Dundee, Scotland, United Kingdom
| | - Michael Bott
- Institut für Bio- und Geowissenschaften (IBG-1: Biotechnologie), Forschungszentrum Jülich, Jülich 52428, Germany
- Bioeconomy Science Center (BioSC), Forschungszentrum Jülich, Jülich D-52425, Germany
| | - Nuno Faria
- Biotempo, 4805-017 Guimarães, Portugal
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Derek Stewart
- The James Hutton Institute, Invergowrie, DD2 5DA Dundee, Scotland, United Kingdom
- School of Engineering and Physical Sciences, Institute of Mechanical, Process and Energy Engineering, Heriot-Watt University, Edinburgh, Scotland, United Kingdom
| | - Marcel Ottens
- Department of Biotechnology, Delft University of Technology, 2629 HZ Delft, The Netherlands
| | | | - Cláudia Nunes Dos Santos
- Instituto de Biologia Experimental e Tecnológica (iBET), 2781-901 Oeiras, Portugal
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
| | - Jan Marienhagen
- Institut für Bio- und Geowissenschaften (IBG-1: Biotechnologie), Forschungszentrum Jülich, Jülich 52428, Germany
- Bioeconomy Science Center (BioSC), Forschungszentrum Jülich, Jülich D-52425, Germany
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Zhang L, Wu M, Yu D, Teng Y, Wei T, Chen C, Song W. Identification of Glutathione Peroxidase (GPX) Gene Family in Rhodiola crenulata and Gene Expression Analysis under Stress Conditions. Int J Mol Sci 2018; 19:E3329. [PMID: 30366446 PMCID: PMC6274781 DOI: 10.3390/ijms19113329] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 01/14/2023] Open
Abstract
Glutathione peroxidases (GPXs) are important enzymes in the glutathione-ascorbate cycle for catalyzing the reduction of H₂O₂ or organic hydroperoxides to water. GPXs play an essential role in plant growth and development by participating in photosynthesis, respiration, and stress tolerance. Rhodiola crenulata is a popular traditional Chinese medicinal plant which displays an extreme energy of tolerance to harsh alpine climate. The GPXs gene family might provide R. crenulata for extensively tolerance to environment stimulus. In this study, five GPX genes were isolated from R. crenulata. The protein amino acid sequences were analyzed by bioinformation softwares with the results that RcGPXs gene sequences contained three conserve cysteine residues, and the subcellular location predication were in the chloroplast, endoplasmic reticulum, or cytoplasm. Five RcGPXs members presented spatial and temporal specific expression with higher levels in young and green organs. And the expression patterns of RcGPXs in response to stresses or plant hormones were investigated by quantitative real-time PCR. In addition, the putative interaction proteins of RcGPXs were obtained by yeast two-hybrid with the results that RcGPXs could physically interact with specific proteins of multiple pathways like transcription factor, calmodulin, thioredoxin, and abscisic acid signal pathway. These results showed the regulation mechanism of RcGPXs were complicated and they were necessary for R. crenulata to adapt to the treacherous weather in highland.
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Affiliation(s)
- Lipeng Zhang
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Mei Wu
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Deshui Yu
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Yanjiao Teng
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Tao Wei
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Chengbin Chen
- College of Life Science, Nankai University, Tianjin, 300071 China.
| | - Wenqin Song
- College of Life Science, Nankai University, Tianjin, 300071 China.
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Sun MY, Ma DS, Zhao S, Wang L, Ma CY, Bai Y. Salidroside mitigates hypoxia/reoxygenation injury by alleviating endoplasmic reticulum stress‑induced apoptosis in H9c2 cardiomyocytes. Mol Med Rep 2018; 18:3760-3768. [PMID: 30132527 PMCID: PMC6131614 DOI: 10.3892/mmr.2018.9403] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 11/23/2017] [Indexed: 02/07/2023] Open
Abstract
Endoplasmic reticulum (ER) stress‑induced apoptosis serves a crucial role in the development of myocardial ischemia/reperfusion (I/R) injury. Salidroside is a phenylpropanoid glycoside isolated from Rhodiola rosea L., which is a plant often used in traditional Chinese medicine. It possesses multiple pharmacological actions and protects against myocardial I/R injury in vitro and in vivo. However, it is not yet clear whether ER stress or ER stress‑induced apoptosis contributes to the cardioprotective effects of salidroside against myocardial I/R injury. Hence, hypoxia/reoxygenation (H/R)‑treated H9c2 cardiomyocytes were used in the current study to mimic myocardium I/R injury in vivo. It was hypothesized that salidroside alleviates ER stress and ER stress‑induced apoptosis, thereby reducing H/R injury in H9c2 cells. The results demonstrated that salidroside attenuated H/R‑induced H9c2 cardiomyocyte injury, as cell viability was increased, lactate dehydrogenase release was decreased, morphological changes in apoptotic cells were ameliorated and the apoptosis ratio was reduced compared with the H/R group. ER stress was reversed, indicated by the downregulation of glucose regulated protein 78 and C/EBP homologous protein following pretreatment with salidroside. In addition, salidroside attenuated ER stress‑induced apoptosis, as the expression of cleaved caspase‑12 and pro‑apoptotic protein Bcl‑2 associated X protein and activity of caspase‑3 was decreased, while the expression of anti‑apoptotic protein Bcl‑2 was increased following pretreatment with salidroside. Furthermore, the results indicated that salidroside decreases the activation of the ER stress‑associated signaling pathway, as the expression of phosphorylated protein kinase RNA (PKR)‑like ER kinase (p‑PERK) and phosphorylated inositol‑requiring enzyme‑1α (p‑IRE1α) proteins were decreased following pretreatment with salidroside. These results demonstrate that salidroside protects against H/R injury via regulation of the PERK and IRE1α pathways, resulting in alleviation of ER stress or ER stress‑induced apoptosis in H9c2 cardiomyocytes.
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Affiliation(s)
- Meng-Yao Sun
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Da-Shi Ma
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Song Zhao
- Department of Spine Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Lei Wang
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Chun-Ye Ma
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yang Bai
- Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
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25
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A Novel UDP-Glycosyltransferase of Rhodiola crenulata Converts Tyrosol to Specifically Produce Icariside D2. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7970590. [PMID: 30027099 PMCID: PMC6031081 DOI: 10.1155/2018/7970590] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 05/22/2018] [Indexed: 11/20/2022]
Abstract
Rhodiola crenulata is a Tibetan native herbal plant belonging to the family of Crassulaceae, which produces the pharmaceutical icariside D2 with the activities of inhibiting angiotensin-converting enzyme and killing leukemia cancer cells. In this study, we functionally characterized a novel UDP-glycosyltransferase (RcUGT1) that converted tyrosol to specifically produce icariside D2 from R. crenulata at molecular and biochemical levels. RcUGT1 was highly expressed in flowers and roots, while the icariside D2 content was much higher in stems than that in other organs, suggesting the potential translocation of icariside D2 from flowers and roots to stems. The high production of icariside D2 in stems provided a reasonable suggestion to farmers to harvest stems instead of roots for icariside D2 production. Enzymatic assays of recombinant RcUGT1 indicated that it converted tyrosol to specifically form icariside D2, with the values of Km 0.97±0.10 mM, Vmax 286±8.26 pKat/mg, Kcat 0.01552 s−1, and Kcat/Km 159.55 s−1 M−1. Functional identification of RcUGT1 facilitated the icariside D2 production through metabolic engineering in plants or synthetic biology in microbes.
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26
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Schenck CA, Maeda HA. Tyrosine biosynthesis, metabolism, and catabolism in plants. PHYTOCHEMISTRY 2018; 149:82-102. [PMID: 29477627 DOI: 10.1016/j.phytochem.2018.02.003] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 01/26/2018] [Accepted: 02/02/2018] [Indexed: 05/22/2023]
Abstract
L-Tyrosine (Tyr) is an aromatic amino acid (AAA) required for protein synthesis in all organisms, but synthesized de novo only in plants and microorganisms. In plants, Tyr also serves as a precursor of numerous specialized metabolites that have diverse physiological roles as electron carriers, antioxidants, attractants, and defense compounds. Some of these Tyr-derived plant natural products are also used in human medicine and nutrition (e.g. morphine and vitamin E). While the Tyr biosynthesis and catabolic pathways have been extensively studied in microbes and animals, respectively, those of plants have received much less attention until recently. Accumulating evidence suggest that the Tyr biosynthetic pathways differ between microbes and plants and even within the plant kingdom, likely to support the production of lineage-specific plant specialized metabolites derived from Tyr. The interspecies variations of plant Tyr pathway enzymes can now be used to enhance the production of Tyr and Tyr-derived compounds in plants and other synthetic biology platforms.
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Affiliation(s)
- Craig A Schenck
- Department of Botany, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Hiroshi A Maeda
- Department of Botany, University of Wisconsin-Madison, Madison, WI 53706, USA.
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27
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Torrens-Spence MP, Pluskal T, Li FS, Carballo V, Weng JK. Complete Pathway Elucidation and Heterologous Reconstitution of Rhodiola Salidroside Biosynthesis. MOLECULAR PLANT 2018; 11:205-217. [PMID: 29277428 DOI: 10.1016/j.molp.2017.12.007] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/23/2017] [Accepted: 12/12/2017] [Indexed: 05/05/2023]
Abstract
Salidroside is a bioactive tyrosine-derived phenolic natural product found in medicinal plants under the Rhodiola genus. In addition to their anti-fatigue and anti-anoxia roles in traditional medicine, Rhodiola total extract and salidroside have also displayed medicinal properties as anti-cardiovascular diseases and anti-cancer agents. The resulting surge in global demand of Rhodiola plants and salidroside has driven some species close to extinction. Here, we report the full elucidation of the Rhodiola salidroside biosynthetic pathway utilizing the first comprehensive transcriptomics and metabolomics datasets for Rhodiola rosea. Unlike the previously proposed pathway involving separate decarboxylation and deamination enzymatic steps from tyrosine to the key intermediate 4-hydroxyphenylacetaldehyde (4-HPAA), Rhodiola contains a pyridoxal phosphate-dependent 4-HPAA synthase that directly converts tyrosine to 4-HPAA. We further identified genes encoding the subsequent 4-HPAA reductase and tyrosol:UDP-glucose 8-O-glucosyltransferase, respectively, to complete salidroside biosynthesis in Rhodiola. We show that heterologous production of salidroside can be achieved in the yeast Saccharomyces cerevisiae as well as the plant Nicotiana benthamiana through transgenic expression of Rhodiola salidroside biosynthetic genes. This study provides new tools for engineering sustainable production of salidroside in heterologous hosts.
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Affiliation(s)
| | - Tomáš Pluskal
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA 02142, USA
| | - Fu-Shuang Li
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA 02142, USA
| | - Valentina Carballo
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA 02142, USA
| | - Jing-Ke Weng
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA 02142, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, USA.
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28
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Zhao K, Zeng J, Zhao T, Zhang H, Qiu F, Yang C, Zeng L, Liu X, Chen M, Lan X, Liao Z. Enhancing Tropane Alkaloid Production Based on the Functional Identification of Tropine-Forming Reductase in Scopolia lurida, a Tibetan Medicinal Plant. FRONTIERS IN PLANT SCIENCE 2017; 8:1745. [PMID: 29085381 PMCID: PMC5650612 DOI: 10.3389/fpls.2017.01745] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 09/25/2017] [Indexed: 06/07/2023]
Abstract
Scopolia lurida, a native herbal plant species in Tibet, is one of the most effective producers of tropane alkaloids. However, the tropane alkaloid biosynthesis in this plant species of interest has yet to be studied at the molecular, biochemical, and biotechnological level. Here, we report on the isolation and characterization of a putative short chain dehydrogenase (SDR) gene. Sequence analysis showed that SlTRI belonged to the SDR family. Phylogenetic analysis revealed that SlTRI was clustered with the tropine-forming reductases. SlTRI and the other TA-biosynthesis genes, including putrescine N-methyltransferase (SlPMT) and hyoscyamine 6β-hydroxylase (SlH6H), were preferably or exclusively expressed in the S. lurida roots. The tissue profile of SlTRI suggested that this gene might be involved in tropane alkaloid biosynthesis. By using GC-MS, SlTRI was shown to catalyze the tropinone reduction to yield tropine, the key intermediate of tropane alkaloids. With the purified recombinant SlTRI from Escherichiacoli, an enzymatic assay was carried out; its result indicated that SlTRI was a tropine-forming reductase. Finally, the role of SlTRI in promoting the tropane alkaloid biosynthesis was confirmed through metabolic engineering in S. lurida. Specifically, hairy root cultures of S. lurida were established to investigate the effects of SlTRI overexpression on tropane alkaloid accumulation. In the SlTRI-overexpressing root cultures, the hyoscyamine contents were 1.7- to 2.9-fold higher than those in control while their corresponding scopolamine contents were likewise elevated. In summary, this functional identification of SlTRI has provided for a better understanding of tropane alkaloid biosynthesis. It also provides a candidate gene for enhancing tropane alkaloid biosynthesis in S. lurida via metabolic engineering.
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Affiliation(s)
- Kaihui Zhao
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, SWU-TAAHC Medicinal Plant Joint R&D Centre, School of Life Sciences, Southwest University, Chongqing, China
- TAAHC-SWU Medicinal Plant Joint R&D Centre, Tibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry Resources, Tibet Agricultural and Animal Husbandry College, Nyingchi, China
| | - Junlan Zeng
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, SWU-TAAHC Medicinal Plant Joint R&D Centre, School of Life Sciences, Southwest University, Chongqing, China
| | - Tengfei Zhao
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, SWU-TAAHC Medicinal Plant Joint R&D Centre, School of Life Sciences, Southwest University, Chongqing, China
| | - Haoxing Zhang
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Fei Qiu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, SWU-TAAHC Medicinal Plant Joint R&D Centre, School of Life Sciences, Southwest University, Chongqing, China
| | - Chunxian Yang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, SWU-TAAHC Medicinal Plant Joint R&D Centre, School of Life Sciences, Southwest University, Chongqing, China
| | - Lingjiang Zeng
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, SWU-TAAHC Medicinal Plant Joint R&D Centre, School of Life Sciences, Southwest University, Chongqing, China
| | - Xiaoqiang Liu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, SWU-TAAHC Medicinal Plant Joint R&D Centre, School of Life Sciences, Southwest University, Chongqing, China
| | - Min Chen
- SWU-TAAHC Medicinal Plant Joint R&D Centre, College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Xiaozhong Lan
- TAAHC-SWU Medicinal Plant Joint R&D Centre, Tibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry Resources, Tibet Agricultural and Animal Husbandry College, Nyingchi, China
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Centre for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhihua Liao
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, SWU-TAAHC Medicinal Plant Joint R&D Centre, School of Life Sciences, Southwest University, Chongqing, China
- TAAHC-SWU Medicinal Plant Joint R&D Centre, Tibetan Collaborative Innovation Centre of Agricultural and Animal Husbandry Resources, Tibet Agricultural and Animal Husbandry College, Nyingchi, China
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29
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Li X, Thwe AA, Park CH, Kim SJ, Arasu MV, Abdullah Al-Dhabi N, Lee SY, Park SU. Ethephon-induced phenylpropanoid accumulation and related gene expression in tartary buckwheat (Fagopyrum tataricum (L.) Gaertn.) hairy root. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1282835] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Xiaohua Li
- Department of Crop Science, Chungnam National University, Daejeon, South Korea
| | - Aye Aye Thwe
- Department of Crop Science, Chungnam National University, Daejeon, South Korea
| | - Chang Ha Park
- Department of Crop Science, Chungnam National University, Daejeon, South Korea
| | - Sun Ju Kim
- Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon, South Korea
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sook Young Lee
- Regional Innovation Center for Dental Science and Engineering, Chosun University, Gwangju, South Korea
| | - Sang Un Park
- Department of Crop Science, Chungnam National University, Daejeon, South Korea
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30
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Kumar R. Evolutionary Trails of Plant Group II Pyridoxal Phosphate-Dependent Decarboxylase Genes. FRONTIERS IN PLANT SCIENCE 2016; 7:1268. [PMID: 27602045 PMCID: PMC4993783 DOI: 10.3389/fpls.2016.01268] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 08/10/2016] [Indexed: 05/24/2023]
Abstract
Type II pyridoxal phosphate-dependent decarboxylase (PLP_deC) enzymes play important metabolic roles during nitrogen metabolism. Recent evolutionary profiling of these genes revealed a sharp expansion of histidine decarboxylase genes in the members of Solanaceae family. In spite of the high sequence homology shared by PLP_deC orthologs, these enzymes display remarkable differences in their substrate specificities. Currently, limited information is available on the gene repertoires and substrate specificities of PLP_deCs which renders their precise annotation challenging and offers technical challenges in the immediate identification and biochemical characterization of their full gene complements in plants. Herein, we explored their evolutionary trails in a comprehensive manner by taking advantage of high-throughput data accessibility and computational approaches. We discussed the premise that has enabled an improved reconstruction of their evolutionary lineage and evaluated the factors offering constraints in their rapid functional characterization, till date. We envisage that the synthesized information herein would act as a catalyst for the rapid exploration of their biochemical specificity and physiological roles in more plant species.
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31
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Expression of Codon-Optimized Plant Glycosyltransferase UGT72B14 in Escherichia coli Enhances Salidroside Production. BIOMED RESEARCH INTERNATIONAL 2016; 2016:9845927. [PMID: 27597978 PMCID: PMC5002478 DOI: 10.1155/2016/9845927] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/18/2016] [Accepted: 07/21/2016] [Indexed: 11/18/2022]
Abstract
Salidroside, a plant secondary metabolite in Rhodiola, has been demonstrated to have several adaptogenic properties as a medicinal herb. Due to the limitation of plant source, microbial production of salidroside by expression of plant uridine diphosphate glycosyltransferase (UGT) is promising. However, glycoside production usually remains hampered by poor expression of plant UGTs in microorganisms. Herein, we achieved salidroside production by expression of Rhodiola UGT72B14 in Escherichia coli (E. coli) and codon optimization was accordingly applied. UGT72B14 expression was optimized by changing 278 nucleotides and decreasing the G+C content to 51.05% without altering the amino acid sequence. The effect of codon optimization on UGT72B14 catalysis for salidroside production was assessed both in vitro and in vivo. In vitro, salidroside production by codon-optimized UGT72B14 is enhanced because of a significantly improved protein yield (increased by 4.8-fold) and an equivalently high activity as demonstrated by similar kinetic parameters (KM and Vmax), compared to that by wild-type protein. In vivo, both batch and fed-batch cultivation using the codon-optimized gene resulted in a significant increase in salidroside production, which was up to 6.7 mg/L increasing 3.2-fold over the wild-type UGT72B14.
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32
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Torrens-Spence MP, Fallon TR, Weng JK. A Workflow for Studying Specialized Metabolism in Nonmodel Eukaryotic Organisms. Methods Enzymol 2016; 576:69-97. [PMID: 27480683 DOI: 10.1016/bs.mie.2016.03.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Eukaryotes contain a diverse tapestry of specialized metabolites, many of which are of significant pharmaceutical and industrial importance to humans. Nevertheless, exploration of specialized metabolic pathways underlying specific chemical traits in nonmodel eukaryotic organisms has been technically challenging and historically lagged behind that of the bacterial systems. Recent advances in genomics, metabolomics, phylogenomics, and synthetic biology now enable a new workflow for interrogating unknown specialized metabolic systems in nonmodel eukaryotic hosts with greater efficiency and mechanistic depth. This chapter delineates such workflow by providing a collection of state-of-the-art approaches and tools, ranging from multiomics-guided candidate gene identification to in vitro and in vivo functional and structural characterization of specialized metabolic enzymes. As already demonstrated by several recent studies, this new workflow opens up a gateway into the largely untapped world of natural product biochemistry in eukaryotes.
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Affiliation(s)
- M P Torrens-Spence
- Whitehead Institute for Biomedical Research, Cambridge, MA, United States
| | - T R Fallon
- Whitehead Institute for Biomedical Research, Cambridge, MA, United States; Massachusetts Institute of Technology, Cambridge, MA, United States
| | - J K Weng
- Whitehead Institute for Biomedical Research, Cambridge, MA, United States; Massachusetts Institute of Technology, Cambridge, MA, United States.
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33
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Rusanov K, Atanassov A, Atanassov I. Engineering Cell and Organ Cultures from Medicinal and Aromatic Plants Toward Commercial Production of Bioactive Metabolites. REFERENCE SERIES IN PHYTOCHEMISTRY 2016. [DOI: 10.1007/978-3-319-32004-5_8-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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34
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Lan X, Quan H, Xia X, Yin W, Zheng W. Molecular cloning and transgenic characterization of the genes encoding chalcone synthase and chalcone isomerase from the Tibetan herbal plant Mirabilis himalaica. Biotechnol Appl Biochem 2015; 63:419-26. [PMID: 25817060 DOI: 10.1002/bab.1376] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 03/23/2015] [Indexed: 01/08/2023]
Abstract
Mirabilis himalaica is an endangered medicinal plant species in the Tibetan Plateau. The two genes respectively encoding chalcone synthase (MhCHS) and chalcone isomerase (MhCHI) were isolated and characterized from M. himalaica. The sequence analysis revealed that the two genes were similar with their corresponding homologous genes in other plants. The tissue profiles showed that both MhCHS and MhCHI had higher expression levels in roots than in stems and leaves. Transgenic hairy root cultures respectively with overexpressing MhCHS and MhCHI were established. The genomic PCR detection confirmed the authority of transgenic hairy root lines, in which either MhCHS or MhCHI expression levels were much higher than that in non-transgenic hairy root line. Finally, the HPLC detection results demonstrated that the rotenoid contents in MhCHS/MhCHI-transformed hairy root lines were enhanced. This study provided two candidate genes that could be used to genetic engineering rotenoid biosynthesis in M. himalaica and an alternative method to produce rotenoid using transgenic hairy root cultures.
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Affiliation(s)
- Xiaozhong Lan
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China.,TAAHC-SWU Medicinal Plant Joint R&D Centre, Agricultural and Animal Husbandry College, Tibet University, Nyingchi of Tibet, People's Republic of China
| | - Hong Quan
- TAAHC-SWU Medicinal Plant Joint R&D Centre, Agricultural and Animal Husbandry College, Tibet University, Nyingchi of Tibet, People's Republic of China.,Institute of Plateau Ecology, Agricultural and Animal Husbandry College, Tibet University, Nyingchi of Tibet, People's Republic of China
| | - Xinli Xia
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China
| | - Weilun Yin
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China
| | - Weilie Zheng
- TAAHC-SWU Medicinal Plant Joint R&D Centre, Agricultural and Animal Husbandry College, Tibet University, Nyingchi of Tibet, People's Republic of China
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35
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Ramified Challenges: Monitoring and Modeling of Hairy Root Growth in Bioprocesses--A Review. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2015; 149:253-73. [PMID: 25652006 DOI: 10.1007/10_2015_305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
The review presents a comprehensive overview on available solutions for the monitoring and modeling of various aspects of hairy root growth processes. Several online and offline measurement principles get explained exemplary and are being compared. It was found that no direct online measurement principle for hairy root biomass in submerged and solid-state culturing environment is available. However, certain indirect methods involving one or more measurement values have been developed for biomonitoring of hairy roots especially in bioreactors. In the field of modeling of hairy root growth processes, four independent architectures (continuous models, metabolic flux analysis, agent-based models, and artificial neural networks) are described and compared including literature references. The discussion is structured into microscopic model approaches, addressing only certain aspects of growth, and macroscopic model approaches, describing the hairy root network as a whole. An agent-based macroscopic model based on phenomenological data acquired with systematic imaging of hairy roots on culture dishes together with a 3D visualization of simulation results is presented in detail.
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The Protective Effects of Salidroside from Exhaustive Exercise-Induced Heart Injury by Enhancing the PGC-1 α -NRF1/NRF2 Pathway and Mitochondrial Respiratory Function in Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:876825. [PMID: 26167242 PMCID: PMC4488012 DOI: 10.1155/2015/876825] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 12/11/2014] [Accepted: 12/11/2014] [Indexed: 11/17/2022]
Abstract
Objective. To test the hypothesis that salidroside (SAL) can protect heart from exhaustive exercise-induced injury by enhancing mitochondrial respiratory function and mitochondrial biogenesis key signaling pathway PGC-1α–NRF1/NRF2 in rats. Methods. Male Sprague-Dawley rats were divided into 4 groups: sedentary (C), exhaustive exercise (EE), low-dose SAL (LS), and high-dose SAL (HS). After one-time exhaustive swimming exercise, we measured the changes in cardiomyocyte ultrastructure and cardiac marker enzymes and mitochondrial electron transport system (ETS) complexes activities in situ. We also measured mitochondrial biogenesis master regulator PGC-1α and its downstream transcription factors, NRF1 and NRF2, expression at gene and protein levels. Results. Compared to C group, the EE group showed marked myocardium ultrastructure injury and decrease of mitochondrial respiratory function (P < 0.05) and protein levels of PGC-1α, NRF1, and NRF2 (P < 0.05) but a significant increase of PGC-1α, NRF1, and NRF2 genes levels (P < 0.05); compared to EE group, SAL ameliorated myocardium injury, increased mitochondrial respiratory function (P < 0.05), and elevated both gene and protein levels of PGC-1α, NRF-1, and NRF-2. Conclusion. Salidroside can protect the heart from exhaustive exercise-induced injury. It might act by improving myocardial mitochondrial respiratory function by stimulating the expression of PGC-1α–NRF1/NRF2 pathway.
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Noda S, Shirai T, Mochida K, Matsuda F, Oyama S, Okamoto M, Kondo A. Evaluation of Brachypodium distachyon L-Tyrosine Decarboxylase Using L-Tyrosine Over-Producing Saccharomyces cerevisiae. PLoS One 2015; 10:e0125488. [PMID: 25996877 PMCID: PMC4440718 DOI: 10.1371/journal.pone.0125488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 03/14/2015] [Indexed: 11/18/2022] Open
Abstract
To demonstrate that herbaceous biomass is a versatile gene resource, we focused on the model plant Brachypodium distachyon, and screened the B. distachyon for homologs of tyrosine decarboxylase (TDC), which is involved in the modification of aromatic compounds. A total of 5 candidate genes were identified in cDNA libraries of B. distachyon and were introduced into Saccharomyces cerevisiae to evaluate TDC expression and tyramine production. It is suggested that two TDCs encoded in the transcripts Bradi2g51120.1 and Bradi2g51170.1 have L-tyrosine decarboxylation activity. Bradi2g51170.1 was introduced into the L-tyrosine over-producing strain of S. cerevisiae that was constructed by the introduction of mutant genes that promote deregulated feedback inhibition. The amount of tyramine produced by the resulting transformant was 6.6-fold higher (approximately 200 mg/L) than the control strain, indicating that B. distachyon TDC effectively converts L-tyrosine to tyramine. Our results suggest that B. distachyon possesses enzymes that are capable of modifying aromatic residues, and that S. cerevisiae is a suitable host for the production of L-tyrosine derivatives.
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Affiliation(s)
- Shuhei Noda
- Biomass Engineering Program, RIKEN, Yokohama, Kanagawa, Japan
| | - Tomokazu Shirai
- Biomass Engineering Program, RIKEN, Yokohama, Kanagawa, Japan
| | - Keiichi Mochida
- Biomass Engineering Program, RIKEN, Yokohama, Kanagawa, Japan
| | - Fumio Matsuda
- Biomass Engineering Program, RIKEN, Yokohama, Kanagawa, Japan; Department of Bioinformatic Engineering, Graduate School of Information Science and Technology, Osaka University, Suita, Osaka, Japan
| | - Sachiko Oyama
- Biomass Engineering Program, RIKEN, Yokohama, Kanagawa, Japan
| | - Mami Okamoto
- Biomass Engineering Program, RIKEN, Yokohama, Kanagawa, Japan
| | - Akihiko Kondo
- Biomass Engineering Program, RIKEN, Yokohama, Kanagawa, Japan; Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
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A prenyltransferase gene confirmed to be a carotenogenic CRTE gene from sweetpotato. J Genet Genomics 2014; 41:613-6. [PMID: 25434686 DOI: 10.1016/j.jgg.2014.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 04/17/2014] [Accepted: 04/22/2014] [Indexed: 10/25/2022]
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Production of salidroside in metabolically engineered Escherichia coli. Sci Rep 2014; 4:6640. [PMID: 25323006 PMCID: PMC4200411 DOI: 10.1038/srep06640] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Accepted: 09/29/2014] [Indexed: 01/12/2023] Open
Abstract
Salidroside (1) is the most important bioactive component of Rhodiola (also called as “Tibetan Ginseng”), which is a valuable medicinal herb exhibiting several adaptogenic properties. Due to the inefficiency of plant extraction and chemical synthesis, the supply of salidroside (1) is currently limited. Herein, we achieved unprecedented biosynthesis of salidroside (1) from glucose in a microorganism. First, the pyruvate decarboxylase ARO10 and endogenous alcohol dehydrogenases were recruited to convert 4-hydroxyphenylpyruvate (2), an intermediate of L-tyrosine pathway, to tyrosol (3) in Escherichia coli. Subsequently, tyrosol production was improved by overexpressing the pathway genes, and by eliminating competing pathways and feedback inhibition. Finally, by introducing Rhodiola-derived glycosyltransferase UGT73B6 into the above-mentioned recombinant strain, salidroside (1) was produced with a titer of 56.9 mg/L. Interestingly, the Rhodiola-derived glycosyltransferase, UGT73B6, also catalyzed the attachment of glucose to the phenol position of tyrosol (3) to form icariside D2 (4), which was not reported in any previous literatures.
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