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Xu Y, Wang M, Luo Y, Liu H, Ling H, He Y, Lu Y. PPARα is one of the key targets for dendrobine to improve hepatic steatosis in NAFLD. JOURNAL OF ETHNOPHARMACOLOGY 2024; 323:117684. [PMID: 38171466 DOI: 10.1016/j.jep.2023.117684] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/26/2023] [Accepted: 12/27/2023] [Indexed: 01/05/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dendrobium nobile Lindl. (DNL) is a traditional Chinese ethnobotanical herb. Dendrobine (DNE) has been designated as a quality indicator for DNL in the Chinese Pharmacopoeia. DNE exhibits various pharmacological activities, including the reduction of blood lipids, regulation of blood sugar levels, as well as anti-inflammatory and antioxidant properties. AIM OF THE STUDY The objective of this study is to explore the impact of DNE on lipid degeneration in nonalcoholic fatty liver disease (NAFLD) liver cells and elucidate its specific mechanism. The findings aim to offer theoretical support for the development of drugs related to DNL. MATERIALS AND METHODS We utilized male C57BL/6J mice, aged 6 weeks old, to establish a NAFLD model. This model allowed us to assess the impact of DNE on liver pathology and lipid levels in NAFLD mice. We investigated the mechanism of DNE's regulation of lipid metabolism through RNA-seq analysis. Furthermore, a NAFLD model was established using HepG2 cells to further evaluate the impact of DNE on the pathological changes of NAFLD liver cells. The potential mechanism of DNE's improvement was rapidly elucidated using HT-qPCR technology. These results were subsequently validated using mouse liver samples. Following the in vitro activation or inhibition of PPARα function, we observed changes in DNE's ability to ameliorate pathological changes in NAFLD hepatocytes. This mechanism was further verified through RT-qPCR and Western blot analysis. RESULTS DNE demonstrated a capacity to enhance serum TC, TG, and liver TG levels in mice, concurrently mitigating liver lipid degeneration. RNA-seq analysis unveiled that DNE primarily modulates the expression of genes related to metabolic pathways in mouse liver. Utilizing HT-qPCR technology, it was observed that DNE markedly regulates the expression of genes associated with the PPAR signaling pathway in liver cells. Consistency was observed in the in vivo data, where DNE significantly up-regulated the expression of PPARα mRNA and its protein level in mouse liver. Additionally, the expression of fatty acid metabolism-related genes (ACOX1, CPT2, HMGCS2, LPL), regulated by PPARα, was significantly elevated following DNE treatment. In vitro experiments further demonstrated that DNE notably ameliorated lipid deposition, peroxidation, and inflammation levels in NAFLD hepatocytes, particularly when administered in conjunction with fenofibrate. Notably, the PPARα inhibitor GW6471 attenuated these effects of DNE. CONCLUSIONS In summary, DNE exerts its influence on the expression of genes associated with downstream fat metabolism by regulating PPARα. This regulatory mechanism enhances liver lipid metabolism, mitigates lipid degeneration in hepatocytes, and ultimately ameliorates the pathological changes in NAFLD hepatocytes.
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Affiliation(s)
- Yanzhe Xu
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, Zunyi, 6 West Xue-Fu Road, Zunyi, 563009, China; Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, Zunyi, 6 West Xue-Fu Road, Zunyi, 563009, China
| | - Miao Wang
- Department of Internal Medicine of Traditional Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 725 South Wanping Road, Shanghai, 200032, China
| | - Yi Luo
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, Zunyi, 6 West Xue-Fu Road, Zunyi, 563009, China; Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, Zunyi, 6 West Xue-Fu Road, Zunyi, 563009, China
| | - Hao Liu
- The Second Affiliated Hospital of Zunyi Medical University, Intersection of Xinlong Avenue and Xinpu Avenue, Honghuagang District, Zunyi, 563009, China
| | - Hua Ling
- School of Pharmacy, Georgia Campus-Philadelphia College of Osteopathic Medicine, 625 Old Peachtree Rd NW, Suwanee, GA, 30024, USA
| | - Yuqi He
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, Zunyi, 6 West Xue-Fu Road, Zunyi, 563009, China; Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, Zunyi, 6 West Xue-Fu Road, Zunyi, 563009, China.
| | - Yanliu Lu
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, Zunyi, 6 West Xue-Fu Road, Zunyi, 563009, China; Guizhou Engineering Research Center of Industrial Key-technology for Dendrobium Nobile, Zunyi Medical University, Zunyi, 6 West Xue-Fu Road, Zunyi, 563009, China.
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Li L, Liu Z, Hu H, Cai R, Bi J, Wang Q, Zhou X, Luo H, Zhang C, Wan R. Dendrobium Nobile Alcohol Extract Extends the Lifespan of Caenorhabditis elegans via hsf-1 and daf-16. Molecules 2024; 29:908. [PMID: 38398658 PMCID: PMC10891841 DOI: 10.3390/molecules29040908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/01/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
Dendrobium nobile is a traditional Chinese herb with anti-inflammatory, antioxidant, and neuroprotective properties. However, its antiaging effects are unclear. Herein, we studied the aging-related functions and the mechanism of action of the alcohol extract of Dendrobium nobile (DnAE) in the model organism Caenorhabditis elegans. The results indicated that 1 mg/mL DnAE slowed lipofuscin accumulation, decreased the levels of reactive oxygen species, elevated superoxide dismutase activity, enhanced oxidative and heat stress resistance, extended the lifespan of nematodes, protected their dopamine neurons from 6-hydroxydopamine-induced neurodegeneration, and reduced Aβ-induced neurotoxicity. DnAE upregulated the mRNA expression of the transcription factors DAF-16 and HSF-1, promoted the nuclear localization of DAF-16, and enhanced the fluorescence intensity of HSP-16.2. However, it had no effect on the lifespan of DAF-16 mutants. Thus, DnAE can significantly extend lifespan, enhance heat stress tolerance, and delay age-related diseases through a DAF-16-dependent pathway.
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Affiliation(s)
- Linfeng Li
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Zhen Liu
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Huiling Hu
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Renming Cai
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Jingdou Bi
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
| | - Qin Wang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
- Dazhou Vocational College of Chinese Medicine, Dazhou 635000, China
| | - Xiaogang Zhou
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Huairong Luo
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Chun Zhang
- School of Pharmacy, Southwest Medical University, Luzhou 646000, China
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
| | - Runlan Wan
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
- Key Laboratory of Luzhou City for Aging Medicine, Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou 646000, China
- Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou 646000, China
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Luo Y, Yang D, Xu Y, Wu D, Tan D, Qin L, Wu X, Lu Y, He Y. Hypoglycemic Effects and Quality Marker Screening of Dendrobium nobile Lindl. at Different Growth Years. Molecules 2024; 29:699. [PMID: 38338442 PMCID: PMC10856227 DOI: 10.3390/molecules29030699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
(1) Background: The effect of Dendrobium nobile Lindl. (D. nobile) on hyperglycemic syndrome has only been recently known for several years. Materials of D. nobile were always collected from the plants cultivated in various growth ages. However, regarding the efficacy of D. nobile on hyperglycemic syndrome, it was still unknown as to which cultivation age would be selected. On the other hand, with the lack of quality markers, it is difficult to control the quality of D. nobile to treat hyperglycemic syndrome. (2) Methods: The effects of D. nobile cultivated at year 1 and year 3 were checked on alloxan-induced diabetic mice while their body weight, diet, water intake, and urinary output were monitored. Moreover, levels of glycosylated serum protein and insulin were measured using Elisa kits. The constituents of D. nobile were identified and analyzed by using UPLC-Q/trap. Quality markers were screened out by integrating the data from UPLC-Q/trap into a network pharmacology model. (3) Results: The D. nobile cultivated at both year 1 and year 3 showed a significant effect on hyperglycemic syndrome at the high dosage level; however, regarding the significant level, D. nobile from year 1 showed the better effect. In D. nobile, most of the metabolites were identified as alkaloids and sesquiterpene glycosides. Alkaloids, represented by dendrobine, were enriched in D. nobile from year 1, while sesquiterpene glycosides were enriched in D. nobile from year 3. Twenty one metabolites were differentially expressed between D. nobile from year 1 and year 3. The aforementioned 21 metabolites were enriched to 34 therapeutic targets directly related to diabetes. (4) Conclusions: Regarding the therapy for hyperglycemic syndrome, D. nobile cultivated at year 1 was more recommended than that at year 3. Alkaloids were recommended to be used as markers to control the quality of D. nobile for hyperglycemic syndrome treatment.
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Affiliation(s)
- Yi Luo
- Key Lab of the Basic Pharmacology of The Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (Y.L.); (D.Y.); (Y.X.)
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
| | - Da Yang
- Key Lab of the Basic Pharmacology of The Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (Y.L.); (D.Y.); (Y.X.)
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
| | - Yanzhe Xu
- Key Lab of the Basic Pharmacology of The Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (Y.L.); (D.Y.); (Y.X.)
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
| | - Di Wu
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
| | - Daopeng Tan
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
| | - Lin Qin
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
| | - Xingdong Wu
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
| | - Yanliu Lu
- Key Lab of the Basic Pharmacology of The Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (Y.L.); (D.Y.); (Y.X.)
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
| | - Yuqi He
- Key Lab of the Basic Pharmacology of The Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (Y.L.); (D.Y.); (Y.X.)
- Guizhou Engineering Research Center of Industrial Key-Technology for Dendrobium Nobile, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi 563009, China; (D.W.); (D.T.); (L.Q.); (X.W.)
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Liu Q, Huang Y, Linghu C, Xiao J, Gu R. Metabolic profiling, in-situ spatial distribution, and biosynthetic pathway of functional metabolites in Dendrobium nobile stem revealed by combining UPLC-QTOF-MS with MALDI-TOF-MSI. FRONTIERS IN PLANT SCIENCE 2023; 13:1125872. [PMID: 36714718 PMCID: PMC9878566 DOI: 10.3389/fpls.2022.1125872] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 12/28/2022] [Indexed: 06/18/2023]
Abstract
The stem of Dendrobium nobile Lindl. (Orchidaceae), called "Shihu" in traditional Chinese medicine, is a well-known medicinal and edible plant material in China. It is used as an antipyretic, analgesic, and tonic to nourish the stomach and Yin (i.e., to improve the production of body fluids). These therapeutic properties are attributed to its alkaloids, sesquiterpenoids, bibenzyls, fluorenones, and phenanthrenes. However, a comprehensive understanding of these metabolites and their spatial distribution in stems is lacking. In this study, ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) was performed to obtain detailed metabolites information about D. nobile stems. Then, the spatial distributions of diverse metabolites, including alkaloids and sesquiterpenoids, were characterized and visualized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry imaging (MALDI-TOF-MSI). Based on the spatial and metabolic profiling data, sesquiterpene alkaloid dendrobine was chosen for the exhaustive study of a biosynthetic pathway in D. nobile. This is the first report on mass spectrometry imaging for Dendrobium species. As a result, critical bioactive metabolites such as 11 alkaloids, 10 sesquiterpenes, and 13 other metabolites were putatively identified and relatively quantified. The identified alkaloids were distributed in the parenchyma or vascular bundle, and sesquiterpenes were present in all regions of the stem with higher abundance in the vascular bundle and cuticle, or in the cuticle and epidermis. The biosynthetic pathway and accumulation pattern of dendrobine in D. nobile stem were also proposed. Our findings not only provided a critical methodology for the thorough understanding of physiological changes in metabolites and precise utilization of D. nobile stem, but also displayed an effective strategy for insight into the biosynthesis of bioactive metabolites in plants.
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Affiliation(s)
- Qingling Liu
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, China
- College of Life Sciences, Guizhou University, Guiyang, China
| | - Yuan Huang
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Chu Linghu
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- National & Local Joint Engineering Research Center for the Exploitation of Homology Resources of Medicine and Food, Guizhou University, Guiyang, China
| | - Jianfen Xiao
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, China
- College of Life Sciences, Guizhou University, Guiyang, China
| | - Ronghui Gu
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, China
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- National & Local Joint Engineering Research Center for the Exploitation of Homology Resources of Medicine and Food, Guizhou University, Guiyang, China
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Fu X, Chen S, Xian S, Wu Q, Shi J, Zhou S. Dendrobium and its active ingredients: Emerging role in liver protection. Biomed Pharmacother 2023; 157:114043. [PMID: 36462312 DOI: 10.1016/j.biopha.2022.114043] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/14/2022] [Accepted: 11/21/2022] [Indexed: 12/05/2022] Open
Abstract
Dendrobium is a traditional medicinal plant, which has a variety of clinical applications in China. It has been reported that Dendrobium contains various bioactive components, mainly including polysaccharides and alkaloids. Previous studies have shown that Dendrobium has pharmacological activities including antiviral, anti-inflammatory, and antioxidant effects, as well as immune regulation. Particularly, the anti-aging functions and neuroprotective effects of Dendrobium have been well characterized in a wide array of cell and animal models. In recent years, the effect of Dendrobium on the liver has emerged as a new direction to explore its therapeutic benefits and has received more and more attention. This review is focused on the beneficial effects of Dendrobium on liver toxicity and various liver disorders, which presumably are attributed to a consequence of an array of modes of action due to its multiple bioactive components, and largely lack mechanistic and pharmacokinetic characterization. A particular emphasis is placed on the potential action mechanisms related to Dendrobium's liver protection. Research perspectives in regard to the potential therapeutic application for Dendrobium are also discussed in this review.
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Affiliation(s)
- Xiaolong Fu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
| | - Shu Chen
- Cell and Tissue Bank of Guizhou Province, Zunyi, Guizhou, China
| | - Siting Xian
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
| | - Qin Wu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
| | - Jingshan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
| | - Shaoyu Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China.
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Transcriptome Analysis of Protection by Dendrobium Nobile Alkaloids (DNLA) against Chronic Alcoholic Liver Injury in Mice. Biomedicines 2022; 10:biomedicines10112800. [PMID: 36359319 PMCID: PMC9687597 DOI: 10.3390/biomedicines10112800] [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: 10/03/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022] Open
Abstract
Objective: To investigate the protective effects of Dendrobium nobile Lindl. alkaloids (DNLA) against chronic alcoholic liver injury. C57BL/6J mice were fed with the Lieber−DeCarli alcohol diet to induce chronic alcoholic liver injury. DNLA (20 mg/kg/day) was gavaged along with the alcohol diet for 28 days. Liver injury was evaluated by serum enzymes. Triglyceride levels, histopathology, and transcriptome changes were examined by RNA-Seq and qPCR. DNLA decreased serum triglyceride levels in mice receiving alcohol. Hepatocyte degeneration and steatosis were ameliorated by DNLA, as evidenced by H&E and Oil-red O staining. DNLA brought the alcohol-induced aberrant gene expression pattern towards normal. Alcohol induced 787 differentially expressed genes (padj < 0.01). DNLA induced 280 differentially expressed genes to a much less extent. Ingenuity pathway analysis showed that DNLA ameliorated alcohol-induced oxidative stress and xenobiotic metabolism disruption. qPCR verified that DNLA alleviated over-activation of Cyp2a4, Cyp2b10, and Abcc4; attenuated oxidative stress (Hmox1, Gstm3, Nupr1), reduced the expression of Nrf2 genes (Nqo1, Gclc, Vldlr); and rescued some metabolic genes (Insig1, Xbp1, Socs3, Slc10a2). In conclusion, DNLA was effective against alcohol-induced fatty liver disease, and the protection may be attributed to alleviated oxidative stress and restored metabolism homeostasis, probably through modulating nuclear receptor CAR-, PXR-, and Nrf2-mediated gene expression pathways.
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Jia Q, Wang L, Qian X, Jin H, Shu F, Sarsaiya S, Jin L, Chen J. Transcriptome Analysis of Dendrobine Biosynthesis in Trichoderma longibrachiatum MD33. Front Microbiol 2022; 13:890733. [PMID: 35979500 PMCID: PMC9376458 DOI: 10.3389/fmicb.2022.890733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022] Open
Abstract
Dendrobine is a representative component of Dendrobium nobile, and its pharmacological effects have been extensively studied. Trichoderma longibrachiatum MD33 was isolated from the stem of Dendrobium nobile which can produce dendrobine. In order to understand the effect of Methyl Jasmonate (MeJA) on the production of dendrobine, transcriptome analysis was performed after MeJA treatment in the MD33 and control groups. The dendrobine production of MeJA (20 μmol/L) treatment group was 44.6% higher than that of control. In this study, the RNA sequencing technology was applied, a total of 444 differentially expressed genes (DEGs) in the control and MeJA treatment groups, including 226 up-regulated genes and 218 down-regulated genes. The Kyoto Encyclopedia of Genes and Genomes annotation showed that numbers of DEGs were associated with the putative alkaloid biosynthetic pathway in T Trichoderma longibrachiatum MD33. Several MVA pathway enzyme-coding genes (isopentenyl-diphosphate Delta-isomerase, iphosphomevalonate decarboxylase and farnesyl diphosphate synthase) were found to be differentially expressed, suggesting an active precursor supply for alkaloid biosynthesis after MeJA treatment, in other wise, dendrobine may synthesis through the MVA pathway in MD33. Numerous MeJA-induced P450 family genes, aminotransferase genes and methyltransferase genes were identified, providing several important candidates to further elucidate the dendrobine biosynthetic pathway of T. longibrachiatum MD33. Furthermore, several MeJA-induced transcription factors (TFs) encoding genes were identified, suggesting a complex genetic network affecting the dendrobine in T. longibrachiatum MD33. These findings reveal the regulation mechanism underlying the MeJA-induced accumulation of dendrobine in T. longibrachiatum MD33.
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Affiliation(s)
- Qi Jia
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
- Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
| | - Lina Wang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Xu Qian
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Hui Jin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Fuxing Shu
- Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
| | - Surendra Sarsaiya
- Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Leilei Jin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Jishuang Chen
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
- Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
- *Correspondence: Jishuang Chen,
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Duan H, Er-Bu A, Dongzhi Z, Xie H, Ye B, He J. Alkaloids from Dendrobium and their biosynthetic pathway, biological activity and total synthesis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 102:154132. [PMID: 35576743 DOI: 10.1016/j.phymed.2022.154132] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 02/26/2022] [Accepted: 04/24/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Dendrobium Sw. has been used for thousands of years in China as a precious traditional Chinese medicine. It is derived from stems of various Dendrobium plants and has the functions of nourishing Yin and clearing heat, activating water and nourishing the stomach, moistening the lung and relieving cough. Modern phytochemical studies show that the main components of Dendrobium include alkaloids, polysaccharides, terpenoids, diphenylbenzene, and phenanthrene. Alkaloids are natural products with obvious biological activity and are important effective components of the medicinal activity or toxicity of plants. At present, dozens of alkaloids with various structures have been isolated from Dendrobium plants, and the alkaloid contents in Dendrobium plants of different species are quite different. From the perspective of food safety, the type, molecular structure, content and potential physiological activity or toxicity of alkaloids are important bases for evaluating the safety of edible plants. Studies have shown that the alkaloids isolated from Dendrobium have neuroprotective, anti-inflammatory and antitumor activities, showing that these alkaloids with potential medicinal activity are important sources of lead compounds in innovative drug development. PURPOSE To summarize the research progress on alkaloids in Dendrobium and provide a reference for research on the food safety and medicinal development of Dendrobium. METHOD Information about alkaloids from Dendrobium was collected from the scientific databases Web of Science, PubChem and PubMed. We discuss the biosynthetic pathway, biological activities and total synthesis of alkaloids from Dendrobium from 1964 to 2020 and summarize the knowledge of alkaloids from Dendrobium, the biosynthetic pathway, biological activities and total synthesis. We chose publications on their chemistry, drug effects, pharmacology, metabolism and biosynthesis, physiology and toxicity. Alkaloids, Dendrobium, biosynthetic pathway and biological activities were used as keywords to extract the relevant literature. CONCLUSION In this paper, the structural classification, biological activity, target and toxicology and synthesis of the alkaloids in Dendrobium were systematically reviewed, which will provide a reference for the safety, development and application of Dendrobium.
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Affiliation(s)
- Hongtao Duan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy Sichuan University, Chengdu, 610041, China; College of Chemistry, Sichuan University, Sichuan 610041, China
| | - Aga Er-Bu
- Medical College of Tibet University, Lasa 850002, China
| | | | - Hongjun Xie
- Medical College of Tibet University, Lasa 850002, China
| | - Bengui Ye
- Medical College of Tibet University, Lasa 850002, China; Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy Sichuan University, Chengdu, 610041, China.
| | - Jun He
- Cancer Center, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Sichuan 610041, China.
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Shen Y, Sun Y, Wang X, Xiao Y, Ma L, Lyu W, Zheng Z, Wang W, Li J. Liver Transcriptome and Gut Microbiome Analysis Reveals the Effects of High Fructose Corn Syrup in Mice. Front Nutr 2022; 9:921758. [PMID: 35845805 PMCID: PMC9280673 DOI: 10.3389/fnut.2022.921758] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
High fructose corn syrup (HFCS) is a viscous mixture of glucose and fructose that is used primarily as a food additive. This article explored the effect of HFCS on lipid metabolism-expressed genes and the mouse gut microbiome. In total, ten 3-week-old male C57BL/6J mice were randomly divided into two groups, including the control group, given purified water (Group C) and 30% HFCS in water (Group H) for 16 weeks. Liver and colonic content were collected for transcriptome sequencing and 16S rRNA gene sequencing, respectively. HFCS significantly increased body weight, epididymal, perirenal fat weight in mice (p < 0.05), and the proportion of lipid droplets in liver tissue. The expression of the ELOVL fatty acid elongase 3 (Elovl3) gene was reduced, while Stearoyl-Coenzyme A desaturase 1 (Scd1), peroxisome proliferator activated receptor gamma (Pparg), fatty acid desaturase 2 (Fads2), acyl-CoA thioesterase 2 (Acot2), acyl-CoA thioesterase 2 (Acot3), acyl-CoA thioesterase 4 (Acot4), and fatty acid binding protein 2 (Fabp2) was increased in Group H. Compared with Group C, the abundance of Firmicutes was decreased in Group H, while the abundance of Bacteroidetes was increased, and the ratio of Firmicutes/Bacteroidetes was obviously decreased. At the genus level, the relative abundance of Bifidobacterium, Lactobacillus, Faecalibaculum, Erysipelatoclostridium, and Parasutterella was increased in Group H, whereas that of Staphylococcus, Peptococcus, Parabacteroides, Donghicola, and Turicibacter was reduced in Group H. Pparg, Acot2, Acot3, and Scd1 were positively correlated with Erysipelatoclostridium and negatively correlated with Parabacteroides, Staphylococcus, and Turicibacter. Bifidobacterium was negatively correlated with Elovl3. Overall, HFCS affects body lipid metabolism by affecting the expression of lipid metabolism genes in the liver through the gut microbiome.
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Affiliation(s)
- Yu Shen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yangying Sun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Xiaoli Wang
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yingping Xiao
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Lingyan Ma
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Wentao Lyu
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Zibin Zheng
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Wen Wang
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- *Correspondence: Wen Wang
| | - Jinjun Li
- Institute of Food Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
- Jinjun Li
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Li Q, Liu C, Huang C, Wang M, Long T, Liu J, Shi J, Shi J, Li L, He Y, Xu DL. Transcriptome and Metabonomics Analysis Revealed the Molecular Mechanism of Differential Metabolite Production of Dendrobium nobile Under Different Epiphytic Patterns. FRONTIERS IN PLANT SCIENCE 2022; 13:868472. [PMID: 35656012 PMCID: PMC9152433 DOI: 10.3389/fpls.2022.868472] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 03/30/2022] [Indexed: 06/15/2023]
Abstract
The cultivation medium of Dendrobium nobile has an effect on the contents of its main medicinal components, but the specific mechanism is still unclear. In this study, the callus, seedlings, rhizomes, and leaves of D. nobile were sequenced for the PacBio SMRT. The 2-year-old stems were selected for the Illumina sequencing and metabolome sequencing to analyze the genetic mechanism of metabolic differences under different epiphytic patterns. As a result, a total of 387 differential genes were obtained, corresponding to 66 differential metabolites. Different epiphytic patterns can induce a series of metabolic changes at the metabolome and transcriptome levels of D. nobile, including flavonoid metabolism, purine metabolism, terpenoid backbone biosynthesis, amino acid metabolism, and alpha-linolenic acid metabolic, and related regulatory genes include ALDH2B7, ADC, EPSPS-1, SHKA, DHAPS-1, GES, ACS1, SAHH, ACS2, CHLP, LOX2, LOX2.3, and CYP74B2. The results showed that the genetic mechanism of D. nobile under various epiphytic patterns was different. In theory, the content of metabolites under the epiphytic patterns of Danxia stone is higher, which is more suitable for field cultivation.
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Affiliation(s)
- Qingqing Li
- Department of Medical Cell Biology, Zunyi Medical University, Zunyi, China
| | - Chaobo Liu
- Department of Medical Cell Biology, Zunyi Medical University, Zunyi, China
| | - Ceyin Huang
- Department of Medical Cell Biology, Zunyi Medical University, Zunyi, China
| | - Mufei Wang
- Department of Medical Cell Biology, Zunyi Medical University, Zunyi, China
| | - Teng Long
- Department of Medical Cell Biology, Zunyi Medical University, Zunyi, China
| | - Jingyi Liu
- Department of Medical Cell Biology, Zunyi Medical University, Zunyi, China
| | - Junhua Shi
- Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Junli Shi
- Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Lin Li
- Department of Medical Cell Biology, Zunyi Medical University, Zunyi, China
| | - Yuqi He
- School of Medicine, Zunyi Medical University, Zunyi, China
| | - De-Lin Xu
- Department of Medical Cell Biology, Zunyi Medical University, Zunyi, China
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11
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Pi T, Lang G, Liu B, Shi J. Protective Effects of Dendrobium nobile Lindl. Alkaloids on Alzheimer's Disease-like Symptoms Induced by High-methionine Diet. Curr Neuropharmacol 2022; 20:983-997. [PMID: 34370639 PMCID: PMC9881098 DOI: 10.2174/1570159x19666210809101945] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 04/27/2021] [Accepted: 06/04/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND High methionine-diet (HMD) causes Alzheimer's disease (AD)-like symptoms. Previous studies have shown that Dendrobium nobile Lindle. alkaloids (DNLA) have potential benefits for AD Object: The objective of this study has been to explore whether DNLA can improve AD-like symptoms induced by HMD. METHODS Mice were fed with 2% HMD diet for 11 weeks; the DNLA20 control group (20 mg/kg), DNLA10 group (10 mg/kg), and DNLA20 group (20 mg/kg) were administered DNLA for 3 months. Morris water maze test was used to detect learning and memory ability. Neuron damage was evaluated by HE and Nissl staining. Levels of homocysteine (Hcy), beta-amyloid 1-42 (Aβ1-42), S-adenosine methionine (SAM) and S-adenosine homocysteine (SAH) were detected by ELISA. Immunofluorescence and western blotting (WB) were used to determine the expression of proteins. CPG island methylation levels were accessed by Methylation-specific PCR (MSP) and MethylTarget methylation detection. RESULTS Morris water maze test revealed that DNLA improved learning and memory dysfunction. HE, Nissl, and immunofluorescence staining showed that DNLA alleviated neuron damage and reduced the 5-methylcytosine (5-mC), Aβ1-40) and Aβ1-42) levels. DNLA also decreased the levels of Hcy and Aβ1-42) in the serum, along with decreasing SAM/SAH level in the liver tissue. WB results showed that DNLA down-regulated the expression of amyloid-precursor protein (APP), presenilin-1 (PS1), beta-secretase-1 (BACE1), DNA methyltransferase1 (DNMT1), Aβ1-40) and Aβ1-42) proteins. DNLA also up-regulated the proteins expression of insulin-degrading enzyme (IDE), neprilysin (NEP), DNMT3a and DNMT3b. Meanwhile, DNLA increased CPG island methylation levels of APP and BACE1 genes. CONCLUSION DNLA alleviated AD-like symptoms induced by HMD via the DNA methylation pathway.
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Affiliation(s)
- Tingting Pi
- Key Laboratory of Basic Pharmacology of Ministry of Education, Zunyi Medical University, Guizhou Province, China
| | - Guangping Lang
- Key Laboratory of Basic Pharmacology of Ministry of Education, Zunyi Medical University, Guizhou Province, China
| | - Bo Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education, Zunyi Medical University, Guizhou Province, China
| | - Jingshan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education, Zunyi Medical University, Guizhou Province, China,Address correspondence to this author at the Key Laboratory of Basic Pharmacology of Ministry of Education, Zunyi Medical University, Guizhou Province, China; Tel: +86 851 2864 3666; E-mail:
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12
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Betaine Supplementation Causes an Increase in Fatty Acid Oxidation and Carbohydrate Metabolism in Livers of Mice Fed a High-Fat Diet: A Proteomic Analysis. Foods 2022; 11:foods11060881. [PMID: 35327303 PMCID: PMC8949908 DOI: 10.3390/foods11060881] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/04/2022] [Accepted: 03/15/2022] [Indexed: 11/16/2022] Open
Abstract
Betaine, a common methyl donor whose methylation is involved in the biosynthesis of carnitine and phospholipids in animals, serves as food and animal feed additive. The present study used liquid chromatography-mass spectrometry (LC-MS) to analyze the liver protein profile of mice on a high fat (HF) diet to investigate the mechanism by which betaine affects hepatic metabolism. Although betaine supplementation had no significant effect on body weight, a total of 103 differentially expressed proteins were identified between HF diet + 1% betaine group (HFB) and HF diet group by LC-MS (fold change > 2, p < 0.05). The addition of 1% betaine had a significant enhancement of the expression of enzymes related to fatty acid oxidation metabolism, such as hydroxyacyl-Coenzyme A dehydrogenase (HADHA), enoyl Coenzyme A hydratase 1 (ECHS1) (p < 0.05) etc., and the expression of apolipoprotein A-II (APOA2) protein was significantly reduced (p < 0.01). Meanwhile, the protein expression of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and succinate-CoA ligase (SUCLG1) were highly significant (p < 0.01). Pathway enrichment using the Kyoto Encyclopedia of Genes and Genomes (KEGG) revealed that the functions of differential proteins involved fatty acid catabolism, carbohydrate metabolism, tricarboxylic acid cycle (TCA) and peroxisome proliferator-activated receptor alpha (PPARα) signaling pathway. Protein−protein interaction (PPI) analysis discovered that acetyl-Coenzyme A acetyltransferase 1 (ACAT1), HADHA and ECHS1 were central hubs of hepatic proteomic changes in the HFB group of mice. Betaine alleviates hepatic lipid accumulation by enhancing fatty acid oxidation and accelerating the TCA cycle and glycolytic process in the liver of mice on an HF diet.
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13
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Song C, Ma J, Li G, Pan H, Zhu Y, Jin Q, Cai Y, Han B. Natural Composition and Biosynthetic Pathways of Alkaloids in Medicinal Dendrobium Species. FRONTIERS IN PLANT SCIENCE 2022; 13:850949. [PMID: 35599884 PMCID: PMC9121007 DOI: 10.3389/fpls.2022.850949] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 03/30/2022] [Indexed: 05/12/2023]
Abstract
Dendrobium is the second biggest genus in the Orchidaceae family, some of which have both ornamental and therapeutic values. Alkaloids are a group of active chemicals found in Dendrobium plants. Dendrobine has emerged specific pharmacological and therapeutic properties. Although Dendrobium alkaloids have been isolated and identified since the 1930s, the composition of alkaloids and their biosynthesis pathways, including metabolic intermediates, alkaloid transporters, concrete genes involved in downstream pathways, and associated gene clusters, have remained unresolved scientific issues. This paper comprehensively reviews currently identified and tentative alkaloids from the aspect of biogenic pathways or metabolic genes uncovered based on the genome annotations. The biosynthesis pathways of each class of alkaloids are highlighted. Moreover, advances of the high-throughput sequencing technologies in the discovery of Dendrobium alkaloid pathways have been addressed. Applications of synthetic biology in large-scale production of alkaloids are also described. This would serve as the basis for further investigation into Dendrobium alkaloids.
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Affiliation(s)
- Cheng Song
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu’an, China
- Anhui Engineering Laboratory for Conservation and Sustainable Utilization of Traditional Chinese Medicine Resources, West Anhui University, Lu’an, China
| | - Jingbo Ma
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu’an, China
| | - Guohui Li
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu’an, China
| | - Haoyu Pan
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu’an, China
| | - Yanfang Zhu
- College of Life Science, Huaibei Normal University, Huaibei, China
| | - Qing Jin
- College of Life Sciences, Anhui Agricultural University, Hefei, China
- *Correspondence: Qing Jin,
| | - Yongping Cai
- College of Life Sciences, Anhui Agricultural University, Hefei, China
- Yongping Cai,
| | - Bangxing Han
- College of Biological and Pharmaceutical Engineering, West Anhui University, Lu’an, China
- Anhui Engineering Laboratory for Conservation and Sustainable Utilization of Traditional Chinese Medicine Resources, West Anhui University, Lu’an, China
- Bangxing Han,
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14
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Gong DY, Chen XY, Guo SX, Wang BC, Li B. Recent advances and new insights in biosynthesis of dendrobine and sesquiterpenes. Appl Microbiol Biotechnol 2021; 105:6597-6606. [PMID: 34463801 DOI: 10.1007/s00253-021-11534-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/28/2022]
Abstract
Sesquiterpenes are one of the most diverse groups of secondary metabolites that have mainly been observed in terpenoids. It is a natural terpene containing 15 carbon atoms in the molecule and three isoprene units with chain, ring, and other skeleton structures. Sesquiterpenes have been shown to display multiple biological activities such as anti-inflammatory, anti-feedant, anti-microbial, anti-tumor, anti-malarial, and immunomodulatory properties; therefore, their therapeutic effects are essential. In order to overcome the problem of low-yielding sesquiterpene content in natural plants, regulating their biosynthetic pathways has become the focus of many researchers. In plant and microbial systems, many genetic engineering strategies have been used to elucidate biosynthetic pathways and high-level production of sesquiterpenes. Here, we will introduce the research progress and prospects of the biosynthesis of artemisinin, costunolide, parthenolide, and dendrobine. Furthermore, we explore the biosynthesis of dendrobine by evaluating whether the biosynthetic strategies of these sesquiterpene compounds can be applied to the formation of dendrobine and its intermediate compounds. KEY POINTS: • The development of synthetic biology has promoted the study of terpenoid metabolism and provided an engineering platform for the production of high-value terpenoid products. • Some possible intermediate compounds of dendrobine were screened out and the possible pathway of dendrobine biosynthesis was speculated. • The possible methods of dendrobine biosynthesis were explored and speculated.
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Affiliation(s)
- Dao-Yong Gong
- Institute of Medicinal Plant Development, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100193, People's Republic of China
- College of Bioengineering of Chongqing University, Chongqing, 400045, People's Republic of China
| | - Xing-Yue Chen
- Institute of Medicinal Plant Development, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100193, People's Republic of China
| | - Shun-Xing Guo
- Institute of Medicinal Plant Development, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100193, People's Republic of China
| | - Bo-Chu Wang
- College of Bioengineering of Chongqing University, Chongqing, 400045, People's Republic of China.
| | - Biao Li
- Institute of Medicinal Plant Development, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100193, People's Republic of China.
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15
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Mou Z, Zhao Y, Ye F, Shi Y, Kennelly EJ, Chen S, Zhao D. Identification, Biological Activities and Biosynthetic Pathway of Dendrobium Alkaloids. Front Pharmacol 2021; 12:605994. [PMID: 33959002 PMCID: PMC8096351 DOI: 10.3389/fphar.2021.605994] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 04/01/2021] [Indexed: 12/12/2022] Open
Abstract
Dendrobium is a genus of flowering plants belonging to the Orchidaceae family with more than 1,400 species. Many Dendrobium species have been used as medicinal plants in several Asian countries for thousands of years. Alkaloids were reported as the major biological markers due to their complex chemical compositions and various types. In this review, we summarized the structural types of alkaloids, their pharmacological activities, as well as the mechanisms of biological activities. More than sixty alkaloids were isolated and identified from the Dendrobium genus. Moreover, the pharmacological effects of Dendrobium alkaloids as hepatic lipid and gluconeogenesis regulation, as neuroprotection, and as anti-tumor, anti-inflammatory, anti-diabetes, and anti-virus factors were described. Besides, the total chemical synthesis of dendrobine is provided, while the biosynthetic pathway of dendrobine has been proposed based on the functions of associated genes. For applications of these invaluable herbs, more researches on the extraction of biological markers from compounds are needed. Further confirmation of the proposed biosynthetic pathways is anticipated as well.
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Affiliation(s)
- Zongmin Mou
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Yi Zhao
- Department of Biological Sciences, Lehman College and The Graduate Center, City University of New York, Bronx, NY, United States.,Ph.D. Programs in Biochemistry, Biology, and Chemistry, The Graduate Center, City University of New York, New York, NY, United States
| | - Fei Ye
- Kunming Municipal Hospital of Traditional Chinese Medicine, Kunming, China
| | - Yana Shi
- College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming, China.,Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Edward J Kennelly
- Department of Biological Sciences, Lehman College and The Graduate Center, City University of New York, Bronx, NY, United States.,Ph.D. Programs in Biochemistry, Biology, and Chemistry, The Graduate Center, City University of New York, New York, NY, United States
| | - Suiyun Chen
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, School of Ecology and Environmental Science, Yunnan University, Kunming, China
| | - Dake Zhao
- Biocontrol Engineering Research Center of Plant Disease and Pest, Biocontrol Engineering Research Center of Crop Disease and Pest, School of Ecology and Environmental Science, Yunnan University, Kunming, China
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16
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Wang Y, Liao X, Zhou C, Hu L, Wei G, Huang Y, Lei Z, Ren Z, Liu Z, Liu Z. Identification of C-glycosyl flavones and quality assessment in Dendrobium nobile. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e9012. [PMID: 33238063 DOI: 10.1002/rcm.9012] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 11/13/2020] [Accepted: 11/22/2020] [Indexed: 06/11/2023]
Abstract
RATIONALE Flavones are significant indicators of quality in traditional Chinese medicines (TCMs) and thus play a significant role in the quality control of TCMs in the pharmaceutical industry. Most flavones in Dendrobium nobile Lindl, a TCM with a long cultivation history and rich sources, have not been identified. This study was aimed at identifying the flavones in D. nobile from various habitats. METHODS High-performance liquid chromatography (HPLC) coupled with diode-array detection and HPLC multiple-stage tandem mass spectrometry was used to identify the chemical constituents of D. nobile from various habitats, and a method was established to determine the content of vicenin II, violanthin and isoviolanthin. Hierarchical cluster analysis, principal component analysis and orthogonal partial least-squares discriminant analysis were used to analyze the variations among 26 batches from different habitats. RESULTS A total of 33 flavones were tentatively identified. Twenty-five flavones, previously undescribed in D. nobile, were acylated by p-coumaroyl, feruloyl, sinapoyl or 3-hydroxy-3-methylglutaryl. The D. nobile habitats were distinguished by significant differences in their flavone content. The C-glycosyl flavones were demonstrated to be characteristic compounds for evaluating D. nobile from various habitats. In particular, flavones acylated with 3-hydroxy-3-methylglutaryl were specific compounds that were only detected in samples from Yunnan. CONCLUSIONS The results of this study could be used to improve the quality control of D. nobile and could provide references for the identification of acylated C-glycosyl flavones in other natural products.
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Affiliation(s)
- Yawen Wang
- College of the First Clinical Medical, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Xian Liao
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Chujuan Zhou
- Guangzhou Medical University Second Affiliated Hospital, Guangzhou, Guangdong, 510260, China
| | - Li Hu
- College of the First Clinical Medical, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Gang Wei
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Yuechun Huang
- College of the First Clinical Medical, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Zhouxi Lei
- Guangzhou Baiyunshan Chenliji Pharmaceutical Co. Ltd, Guangzhou, Guangdong, 510220, China
| | - Zhiyao Ren
- School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Zhixia Liu
- Chishui Zhilv Dendrobium Ecological Park Development Co. Ltd, Zunyi, Guizhou, 564700, China
| | - Zhihua Liu
- Chishui Zhilv Dendrobium Ecological Park Development Co. Ltd, Zunyi, Guizhou, 564700, China
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17
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Zhang X, Wang M, Zhang C, Liu Z, Zhou S. Clinical study of Dendrobium Nobile Lindl intervention on patients with metabolic syndrome. Medicine (Baltimore) 2021; 100:e24574. [PMID: 33761635 PMCID: PMC10545254 DOI: 10.1097/md.0000000000024574] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Metabolic syndrome (MS) is a common chronic disease in modern society, and the etiology and pathogenesis of it is still unknown. For its main symptoms: disorder of glucose and lipid metabolism, the usual treatment is applying statin and hypoglycemic drugs. Comparing to the long-term application of these drugs which may cost great side effects, Dendrobium Nobile Lindl (DN) has been proved for its hypoglycemic and lipid-lowering effects without obvious side effects. So this trial is aim to evaluate the efficacy and safety of DN-powder in intervention of MS, and to explore the mechanism of action of DN through multi-group correlation analysis. METHODS This clinical trial is a single-arm, non-randomized, open, exploratory trial. A total of 30 participants who are suffering from MS will be assigned into therapy group (n = 30). The treatment course will last for 8 weeks, and a follow-up period for 4 weeks. The participants will receive DN-powder for 6 g, twice a day during the study period. The primary outcome will be the change of lipid and glucose metabolism. Other outcomes will be the body weight and body mass index (BMI) which will be assessments record in every 2 weeks. Participants who quit the trial due to untolerable reactions or uncontrollable conditions will enter into a follow-up period after the last treatment. All participants will enter into a follow-up period for 4 weeks after the last treatment. Adverse events will be recorded during the whole study. DISCUSSION The results of the trial are aim to provide evidence of the safety and efficacy of DN-powder in intervention of MS which may be potential to become an important alternative therapy for certain patients. TRIAL REGISTRATION It has been registered at http://www.chictr.org.cn/showprojen.aspx?proj=55914. (Identifier: ChiCTR2000034550), Registered 9 July 2020.
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18
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Zhang Y, Zhou J, Liu J, Li S, Zhou S, Zhang C, Wang Y, Shi J, Liu J, Wu Q. RNA-Seq analysis of the protection by Dendrobium nobile alkaloids against carbon tetrachloride hepatotoxicity in mice. Biomed Pharmacother 2021; 137:111307. [PMID: 33561648 DOI: 10.1016/j.biopha.2021.111307] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/30/2020] [Accepted: 12/26/2020] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE Dendrobium nobile is a genuine Chinese medicine. Dendrobium nobile Lindl. alkaloids (DNLA) protects against CCl4-induced acute liver injury. This study used RNA-Seq to explore the mechanisms. METHODS Mice were pretreated with DNLA (10 and 20 mg/kg, po) for 7 days, and subsequently intoxicated with CCl4 (20 μL/kg, ip for 24 h). Liver RNA was extracted and subjected to RNA-Seq. The bioinformatics, including PCA, GO, KEGG, two-dimensional clustering, Ingenuity Pathways Analysis (IPA), and Illumina BaseSpace Correlation Engine (BSCE) were used to analyze the data. qPCR was performed on selected genes to verify RNA-Seq results. RESULTS DNLA protection against CCl4 hepatotoxicity was confirmed by histopathology. PCA revealed the distinct gene expression patterns between the different treatment groups. GO showed that CCl4 induced the activation, adhesion and proliferation of immune cells. KEGG showed CCl4 induced oxidative stress, diseases and compromised adaptive responses. CCl4 induced differentially expressed genes (DEGs) were identified by DESeq2 with Padj < 0.05 and 2D-clustered with other groups. DNLA reverted CCl4-induced DEGs in a dose-dependent manner. qPCR analysis of S100 g, Sprr1, CCL3/7, Saa2/3, IL1rn, Cox7a2 and Rad15 confirmed RNA-Seq results. IPA showed that CCl4 treatment altered some signaling and metabolic pathways, which were ameliorated or returned to normal following DNLA treatment. The CCl4-activated mitochondrial oxidative phosphorylation was illustrated as an example. IPA Upstream Regulator Analysis further revealed the activated or inhibited molecules and chemicals that are responsible for CCl4-induced DEGs, and DNLA attenuated these changes. BSCE analysis verified that CCl4-induced DEGs were highly correlated with the GEO database of CCl4 hepatotoxicity in rodents, and DNLA dose-dependently attenuated such correlation. CONCLUSION RNA-Seq revealed CCl4-induced DEGs, disruption of canonical pathways, activation or inhibition of upstream regulators, which are highly correlated with database for CCl4 hepatotoxicity. All these changes were attenuated or returned to normal by DNLA, demonstrating the mechanisms for DNLA to protect against CCl4 hepatotoxicity.
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Affiliation(s)
- Ya Zhang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Jinxin Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Jiajia Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Shujun Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Shaoyu Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Chengchen Zhang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Yan Wang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Jingshan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Jie Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
| | - Qin Wu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China.
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Zhang J, Xu HX, Zhao ZL, Xian YF, Lin ZX. Dendrobium nobile Lindl: A Review on Its Chemical Constituents and Pharmacological Effects. CHINESE MEDICINE AND CULTURE 2021. [DOI: 10.4103/cmac.cmac_44_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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20
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Xiao J, Peng Y, Li WDZ. Advances on the Total Synthesis of Sesquiterpenoid Alkaloid Dendrobine. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202101041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Lin W, Wang J, Xu X, Wu Y, Qiu D, He B, Sarsaiya S, Ma X, Chen J. Rapid propagation in vitro and accumulation of active substances of endangered Dendrobium cariniferum Rchb. f. Bioengineered 2020; 11:386-396. [PMID: 32172675 PMCID: PMC7161565 DOI: 10.1080/21655979.2020.1739406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Dendrobium cariniferum is a valuable ornamental and medicinal plant rich with polysaccharides, alkaloid, and other bioactive compounds, which are potential raw materials for pharmacological utilization. In this study, an efficient protocol for the rapid propagation of D. cariniferum was developed. By using the tissue culture protocol, the effects of pH, hormone combinations, temperatures, light intensity, culture time protocorm proliferation, seedlings rooting, and accumulation of biomass with bioactive compounds were investigated. The experiments showed that the medium [1/2 MS + activated carbon1.0 g/L+ agar strip 7.5 g/L + sucrose 25 g/L] effectively promoted the germination of D. cariniferum seeds. The optimal culture conditions were found at pH 5.7, temperature 23 ± 2°C, and light intensity of 1000 Lx in the protocorm proliferation stage. Adding 1.5 g/L peptone in the medium effectively promoted the seedling rooting. The optimal culture conditions for accumulation of bioactive compounds (polysaccharides and alkaloids) of seedlings were found at temperature of 25 ± 2°C, light intensity of 1500–2000 Lx after the 60-day (d). Our study constructed a rapid propagation system in vitro for D. cariniferum, as well as the methods for efficient accumulation of active substances in seedling culture, which will serve as guidance for industrial production of D. cariniferum seedlings for both medicinal raw materials and ornamental plants. In addition, our study provided a new idea that we can directly use the high bioactive compound seedlings to extract medicinal components in industry conditions without transferring to the field.
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Affiliation(s)
- Wei Lin
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China.,Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
| | - Jingjing Wang
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiuming Xu
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yuhan Wu
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Dongliang Qiu
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Bizhu He
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Surendra Sarsaiya
- Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
| | - Xiaokai Ma
- FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology, the Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization (Fuzhou), College of Horticulture, College of Food Science, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jishuang Chen
- Bioresource Institute for Healthy Utilization, Zunyi Medical University, Zunyi, China
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Liu J, Zhu T, Niu Q, Yang X, Suo H, Zhang H. Dendrobium nobile Alkaloids Protects against H 2O 2-Induced Neuronal Injury by Suppressing JAK-STATs Pathway Activation in N2A Cells. Biol Pharm Bull 2020; 43:716-724. [PMID: 32238714 DOI: 10.1248/bpb.b19-01083] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purpose of this study was to investigate the preventive effect and mechanism of Dendrobium alkaloids (DNLA) on oxidative stress-related death in neuronal cells. Our results demonstrated that DNLA has a direct neuroprotective effect through oxidative stress in N2A cells induced by hydrogen peroxide (H2O2). CCK8, lactate dehydrogenase (LDH), intracellular Ca2+, intracellular reactive oxygen species (ROS), and mitochondrial membrane potential (MMP) were used to evaluate the mechanism of DNLA neutralization by H2O2-induced injury. Results presented in the paper indicate that treatment with DNLA (35 ng/mL) significantly attenuated decreases in cell viability, release of LDH, and apoptosis after H2O2-induced neuronal injury. Furthermore, DNLA significantly reduced intracellular Ca2+ up-regulation, ROS production, and inhibited mitochondrial depolarization. Moreover, DNLA treatment significantly downregulated expressions of interleukin (IL)-1β, tumor necrosis factor (TNF)-α, IL-6, nitric oxide synthase, janus kinase-signal transducer and activators of transcription (JAK-STATs) signaling in N2A cells, all of which were H2O2-induced. Taken together, our findings suggested that DNLA may inhibit the expression of pro-inflammatory and pro-apoptotic factors by blocking JAK-STATs signaling after oxidative stress injury. This research provides a potential experimental basis for further application of DNLA to prevent various human nervous system diseases caused by oxidative stress.
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Affiliation(s)
- Jing Liu
- School of Life Science and Bioengineering, Henan University of Urban Construction
| | - Tao Zhu
- School of Life Science and Bioengineering, Henan University of Urban Construction
| | - Qingqing Niu
- School of Life Science and Bioengineering, Henan University of Urban Construction
| | - Xiaoxing Yang
- School of Life Science and Bioengineering, Henan University of Urban Construction
| | - Hao Suo
- School of Life Science and Bioengineering, Henan University of Urban Construction
| | - Hao Zhang
- School of Life Science and Bioengineering, Henan University of Urban Construction.,Institute of Biomedical and Pharmaceutical sciences, Guangdong University of Technology
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Nie X, Chen Y, Li W, Lu Y. Anti-aging properties of Dendrobium nobile Lindl.: From molecular mechanisms to potential treatments. JOURNAL OF ETHNOPHARMACOLOGY 2020; 257:112839. [PMID: 32268205 DOI: 10.1016/j.jep.2020.112839] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/21/2020] [Accepted: 04/01/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dendrobium Nobile Lindl. (DNL) is one of the central herbs in traditional Chinese medicine which mainly distributes in Guizhou, Yunnan, Guangxi and other sub-tropical areas south of the Yangtze River. In the past decades, it has been used to treat tumors, hyperglycemia, hyperlipidemia, and diseases of the nervous system that may be caused by aging. AIM OF THE REVIEW The purpose of this review is to summarize the anti-aging information of DNL from the molecular mechanism level, including classic theories related to aging, main chemical components, pharmacological research and anti-aging theory based on traditional Chinese medicine theory, for exploring the future development and clinical treatment. MATERIALS AND METHODS The information in this paper has been collected from the scientific literature databases including PubMed, Google Scholar, Web of Science, Science Direct, Springer, China National Knowledge Infrastructure, published books, Ph.D. and M.S. dissertations systematically. RESULTS In this paper, we have reviewed the several mechanisms underlying the potential effects of DNL on the prevention of aging, including the scavenging of free radicals for oxidation, delaying of DNA impairment, inhibition of apoptosis, and alteration of DNA methylation. Together with the theory of telomeres, this review also has summarized recent research progress in the use of DNL and its traditional efficacy. CONCLUSIONS We conclude that "strengthening Yin and benefiting the spirit", "thickening the intestine and stomach", "lightning the body and prolonging the life-span", and delaying aging, are key effects of DNL that can be used to combat age-related diseases (ARDs) such as Alzheimer's disease, hyperlipidemia, and diabetes. This review provides a reference for future study of ARDs and the clinical application of DNL.
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Affiliation(s)
- Xuqiang Nie
- College of Pharmacy, Zunyi Medical University, Zunyi, 563000, China; Joint International Research Laboratory of Ethnomedicine of Chinese Ministry of Education, Zunyi Medical University, Zunyi, 563000, China.
| | - Yu Chen
- College of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
| | - Wei Li
- College of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
| | - Yanliu Lu
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, Zunyi, 563000, China
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Zhou J, Zhang Y, Li S, Zhou Q, Lu Y, Shi J, Liu J, Wu Q, Zhou S. Dendrobium nobile Lindl. alkaloids-mediated protection against CCl 4-induced liver mitochondrial oxidative damage is dependent on the activation of Nrf2 signaling pathway. Biomed Pharmacother 2020; 129:110351. [PMID: 32535387 DOI: 10.1016/j.biopha.2020.110351] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 05/25/2020] [Accepted: 06/01/2020] [Indexed: 12/12/2022] Open
Abstract
The activation of nuclear factor erythroid 2-related factor 2 (Nrf2)-mediated signaling pathway has been involved in the mechanisms of a variety of protective agents against cellular oxidative stress. We recently demonstrated that Dendrobium nobile Lindl. alkaloids (DNLA), the active ingredients of Dendrobium, protects mice from CCl4-induced liver injury, dependent on the Nrf2 signaling pathway. The present study was aimed to determine whether the protection against mitochondrial oxidative damage plays a role in the mode of action of DNLA on CCl4-induced liver injury, and to further investigate whether the DNLA-conferred mitochondrial beneficial effects is dependent on the activation of Nrf2 signaling. The CCl4-induced acute liver injury model was employed in both wild-type (WT) and Nrf2-knockout (Nrf2-/-) mice. The results showed that in WT mice DNLA reduced CCl4-induced liver injury, accompanied by a significant reduction in CCl4-induced mitochondrial oxidative stress as evidenced by a decrease in mitochondrial H2O2 content and MDA production, and a marked increase in GSH level and Mn-SOD activity. However, these protective effects were significantly attenuated in Nrf2-/- mice. Furthermore, the administration of DNLA improved mitochondrial oxygen consumption, elevated ATP production, and decreased CCl4-induced apoptosis in the WT mice, whereas the DNLA-mediated protections on mitochondrial function were diminished in the Nrf2 null mice. These results demonstrate that the improvement of mitochondrial oxidative stress and mitochondrial dysfunction is implicated in the mechanism of DNLA-mediated protection on CCl4-induced liver injury, and this DNLA-modulated mode of action is dependent on the activation of Nrf2 signaling pathway.
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Affiliation(s)
- Jinxin Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Ya Zhang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Shiyue Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Qian Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Yuanfu Lu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Jingshan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Jie Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Qin Wu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China.
| | - Shaoyu Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China.
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Liu GY, Tan L, Cheng L, Ding LS, Zhou Y, Deng Y, He YQ, Guo DL, Xiao SJ. Dendrobine-type alkaloids and bibenzyl derivatives from Dendrobium findlayanum. Fitoterapia 2020; 142:104497. [DOI: 10.1016/j.fitote.2020.104497] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 01/26/2023]
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26
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Huang S, Wu Q, Liu H, Ling H, He Y, Wang C, Wang Z, Lu Y, Lu Y. Alkaloids of dendrobium nobile lindl. Altered hepatic lipid homeostasis via regulation of bile acids. JOURNAL OF ETHNOPHARMACOLOGY 2019; 241:111976. [PMID: 31132462 DOI: 10.1016/j.jep.2019.111976] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 05/16/2019] [Accepted: 05/23/2019] [Indexed: 05/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Accumulation of hepatic lipid promotes systemic metabolic dysfunction and results in fatty liver. Our previous studies have shown that the alkaloids of Dendrobium nobile Lindl. (DNLA) could regulate the lipid metabolism gene expression in livers of mice. However, the protective effects on hepatic lipid homeostasis and the underlying mechanisms are still unclear. MATERIALS AND METHODS The C57BL/6 male mice were randomly divided into four groups, including control group, model group, DNLA treatment group, and simvastatin positive control group. Mice in the control group and the other three groups were fed with control diet and high fat diet during the full course of this study, respectively. Hepatic lipid accumulation was induced by HFD in mice after 18 weeks of feeding. DNLA (15 mg/kg) and simvastatin (20 mg/kg) were administrated intragastrically in the DNLA treatment group and simvastatin positive control group for another 18 weeks, respectively. HE staining and Oil-Red-O staining of liver tissues were observed. TC and TG levels in liver were assayed. The amount of major bile acids in mice livers were quantified by UPLC-MS. Expression levels of genes were tested by the real-time PCR. RESULTS The results of HE staining and Oil-Red-O staining showed that DNLA could improve hepatic lipid homeostasis. DNLA significantly decreased liver TC and TG levels in the DNLA group. Moreover, the UPLC-MS analysis showed that DNLA did not only influence the hepatic bile acid quantity but did raise the hydrophilicity. Compared with the model group, DNLA decreased the hepatic levels of several free bile acids, including LCA, DCA, CA, and CDCA, and increased most important taurine-conjugated bile acids levels in liver, including TMCAs, TCDCA, TUDCA, and THDCA. In addition, DNLA also decreased the CA/CDCA ratio. The gene expression levels of Cyp27a1, Cyp3a11, Fxr, and Shp were up-regulated in DNLA treatment group. CONCLUSION DNLA may improve the hepatic abnormal lipid profile of HFD-fed mice via two pathways: (1) enhancing the taurine-conjugated bile acids which are highly hydrophilic and contribute to the excretion of cholesterol; (2) decreasing the CA/CDCA ratio which is positively related to cholesterol absorption.
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Affiliation(s)
- Si Huang
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi City, Guizhou, 563009, China
| | - Qing Wu
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi City, Guizhou, 563009, China
| | - Hao Liu
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi City, Guizhou, 563009, China; Shanghai Key Laboratory of Complex Prescription, Shanghai University of Traditional Chinese Medicine, 1200 Cai-Lun Road, Shanghai, 201203, China
| | - Hua Ling
- School of Pharmacy, Georgia Campus-Philadelphia College of Osteopathic Medicine, 625 Old Peachtree Rd NW, Suwanee, GA, 30024, USA
| | - Yuqi He
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi City, Guizhou, 563009, China; Shanghai Key Laboratory of Complex Prescription, Shanghai University of Traditional Chinese Medicine, 1200 Cai-Lun Road, Shanghai, 201203, China
| | - Changhong Wang
- Shanghai Key Laboratory of Complex Prescription, Shanghai University of Traditional Chinese Medicine, 1200 Cai-Lun Road, Shanghai, 201203, China
| | - Zhengtao Wang
- Shanghai Key Laboratory of Complex Prescription, Shanghai University of Traditional Chinese Medicine, 1200 Cai-Lun Road, Shanghai, 201203, China
| | - Yanliu Lu
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi City, Guizhou, 563009, China.
| | - Yuanfu Lu
- Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, 6 West Xue-Fu Road, Zunyi City, Guizhou, 563009, China.
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Zhang Y, Zhang Q, Wei F, Liu N. Progressive study of effects of erianin on anticancer activity. Onco Targets Ther 2019; 12:5457-5465. [PMID: 31371985 PMCID: PMC6628150 DOI: 10.2147/ott.s200161] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 05/18/2019] [Indexed: 01/21/2023] Open
Abstract
Erianin is the major bisbenzyl compound extracted from the traditional Chinese medicine Dendrohium chrysotoxum Lindl. Erianin possesses many biological properties relevant to cancer prevention and therapy. The previous studies confirmed that antitumor effects of erianin are regulated with multiple signaling pathways. The mechanisms of erianin are numerous, and most of them induce cancer cell apoptosis that may be intrinsic or extrinsic and modulate the ROS/JNK signaling pathways. Invasion, migration, and angiogenesis represent emerging targets of erianin and support its anticancer properties. This review aimed to summarize the recent advances in the antitumor activity of erianin and to provide a rationale for further exploring the potential application of erianin in overcoming cancer in the future.
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Affiliation(s)
- Yuying Zhang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, People's Republic of China
| | - Qianqian Zhang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, People's Republic of China
| | - Fanhua Wei
- College of Agriculture, Ningxia University, Yinchuan 750021, People's Republic of China
| | - Na Liu
- School of Biological Science and Technology, University of Jinan, Jinan 250022, People's Republic of China
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Li S, Zhou J, Xu S, Li J, Liu J, Lu Y, Shi J, Zhou S, Wu Q. Induction of Nrf2 pathway by Dendrobium nobile Lindl. alkaloids protects against carbon tetrachloride induced acute liver injury. Biomed Pharmacother 2019; 117:109073. [PMID: 31212129 DOI: 10.1016/j.biopha.2019.109073] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/25/2019] [Accepted: 06/02/2019] [Indexed: 12/18/2022] Open
Abstract
Dendrobium nobile Lindl. alkaloids (DNLA), the active ingredients of Dendrobium, has been shown to possess anti-oxidative effects. The nuclear factor erythroid 2-related factor 2 (Nrf2) antioxidant signaling pathway plays a critical role in the cellular response to oxidative stress. Oxidative damage has been implicated in the mechanism of various hepatotoxins induced liver injury. The present study aimed to examine the protective effects of DNLA on CCl4-induced acute liver injury, and to explore the role of the Nrf2 pathway in the protective action of DNLA. Wild-type (WT) and Nrf2-knockout (Nrf2-/-) mice were administrated with DNLA (20 mg/kg/day, ig) for 7 days, and then challenged with CCl4 (20 μL/kg, ip). In WT mice, DNLA reduced CCl4 induced liver injury, as evidenced by the reduction in the serum levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST), attenuation of malondialdehyde (MDA) production, and improved ultrastructural morphology in hepatocytes. However, the protective effect was diminished in Nrf2-/- mice, indicating an essential role of Nrf2 in DNLA-mediated protection over CCl4 liver injury. Furthermore, it was found that DNLA enhanced Nrf2 expression and nuclear accumulation and increased the expression of Nrf2 regulated downstream proteins. These results demonstrate that DNLA protects mice from CCl4 induced liver injury, probably through the activation of the Nrf2 signaling pathway.
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Affiliation(s)
- Shiyue Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Jinxin Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Shangfu Xu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Jin Li
- Research Center for Medicine & Biology, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Jie Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Yuanfu Lu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Jingshan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China
| | - Shaoyu Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China.
| | - Qin Wu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563003, China.
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Chen Y, Wang Y, Lyu P, Chen L, Shen C, Sun C. Comparative transcriptomic analysis reveal the regulation mechanism underlying MeJA-induced accumulation of alkaloids in Dendrobium officinale. JOURNAL OF PLANT RESEARCH 2019; 132:419-429. [PMID: 30903398 DOI: 10.1007/s10265-019-01099-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 02/25/2019] [Indexed: 05/12/2023]
Abstract
Dendrobium officinale is a traditional medicinal herb with a variety of bioactive components. Alkaloid is one of the major active ingredients of Dendrobium plants, and its immune regulatory effects have been well-studied. Although a number of genes involved in the biosynthetic pathway of alkaloids have been elucidated, the regulation mechanism underlying the methyl-jasmonate (MeJA)-induced accumulation of alkaloids in D. officinale is largely unknown. In our study, a total of 4,857 DEGs, including 2,943 up- and 1,932 down-regulated genes, were identified between the control and MeJA-treated groups. Kyoto Encyclopedia of Genes and Genomes annotation showed that a number of DEGs were associated with the putative alkaloid biosynthetic pathway in D. officinale. The main group of Dendrobium alkaloids are sesquiterpene alkaloids, which are the downstream products of mevalonate (MVA) and methylerythritol 4-phosphate (MEP) pathway. Several MVA and MEP pathway genes were significantly up-regulated by the MeJA treatment, suggesting an active precursor supply for the alkaloid biosynthesis under MeJA treatment. A number of MeJA-induced P450 family genes, aminotransferase genes and methyltransferase genes were identified, providing several important candidates to further elucidate the sesquiterpene alkaloid biosynthetic pathway of D. officinale. Furthermore, a large number of MeJA-induced transcript factor encoding genes were identified, suggesting a complex genetic network affecting the sesquiterpene alkaloid metabolism in D. officinale. Our data aids to reveal the regulation mechanism underlying the MeJA-induced accumulation of sesquiterpene alkaloids in D. officinale.
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Affiliation(s)
- Yue Chen
- Institute of Horticulture, Zhejiang Academy of Agriculture Science, Hangzhou, Zhejiang, People's Republic of China
- Key Laboratory of Creative Agriculture, Ministry of Agriculture, Hangzhou, People's Republic of China
| | - Yunzhu Wang
- Institute of Horticulture, Zhejiang Academy of Agriculture Science, Hangzhou, Zhejiang, People's Republic of China
- Key Laboratory of Creative Agriculture, Ministry of Agriculture, Hangzhou, People's Republic of China
| | - Ping Lyu
- Lin'an Agricultural and Forestry Technology Extension Center, Hangzhou, Zhejiang, People's Republic of China
| | - Liping Chen
- Institute of Horticulture, Zhejiang Academy of Agriculture Science, Hangzhou, Zhejiang, People's Republic of China
- Key Laboratory of Creative Agriculture, Ministry of Agriculture, Hangzhou, People's Republic of China
| | - Chenjia Shen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Chongbo Sun
- Institute of Horticulture, Zhejiang Academy of Agriculture Science, Hangzhou, Zhejiang, People's Republic of China.
- Key Laboratory of Creative Agriculture, Ministry of Agriculture, Hangzhou, People's Republic of China.
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Macáková K, Afonso R, Saso L, Mladěnka P. The influence of alkaloids on oxidative stress and related signaling pathways. Free Radic Biol Med 2019; 134:429-444. [PMID: 30703480 DOI: 10.1016/j.freeradbiomed.2019.01.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/16/2019] [Accepted: 01/21/2019] [Indexed: 12/19/2022]
Abstract
Alkaloids have always attracted scientific interest due to either their positive or negative effects on human beings. This review aims to summarize their antioxidant effects by both classical in vitro scavenging assay and at the cellular level. Since most in vitro studies used the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging assay, the results from those studies are summed up in the first part of the article. In the second part, available data on the effect of alkaloids on NADPH-oxidase, the key enzyme for reactive oxygen species production, at the cellular level, are summarized. More than 130 alkaloids were tested by DPPH assay. However, due to methodological differences, a direct comparison is hardly possible. It can be at least concluded that some of them were either similar to or even more active than standard antioxidants and the number of aromatic hydroxyl groups seems to be the major determinant for the activity. The data on inhibition of NADPH-oxidase activity by alkaloids demonstrated that there is little relationship to the DPPH assay. The mechanism seems to be based on inhibition of synthesis, activation or translocation of NADPH-oxidase subunits. In some alkaloids, activation of the nuclear factor Nrf2 pathway was documented to be the grounds for inhibition of NADPH-oxidase. Interestingly, many alkaloids can behave both as anti-oxidants and pro-oxidants depending on conditions and pro-oxidation might be the reason for activation of Nrf2. Available data on other "antioxidant" transcription factors FOXOs and PPARs are also mentioned.
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Affiliation(s)
- Kateřina Macáková
- Department of Pharmaceutical Botany, Charles University, Faculty of Pharmacy in Hradec Králové, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Rita Afonso
- Department of Pharmacology and Toxicology, Charles University, Faculty of Pharmacy in Hradec Králové, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy.
| | - Přemysl Mladěnka
- Department of Pharmacology and Toxicology, Charles University, Faculty of Pharmacy in Hradec Králové, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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Dendrobium polysaccharides attenuate cognitive impairment in senescence-accelerated mouse prone 8 mice via modulation of microglial activation. Brain Res 2018; 1704:1-10. [PMID: 30253123 DOI: 10.1016/j.brainres.2018.09.030] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 09/20/2018] [Accepted: 09/21/2018] [Indexed: 02/06/2023]
Abstract
Dendrobium is one of the most important traditional Chinese medicinal foods used to treat age-related disorders. However, it remains unclear whether Dendrobium affects the progression of Alzheimer's disease (AD). In the present study, we investigated the effects of Dendrobium officinale polysaccharides (DOP) on the BV2 microglial cell line and the senescence-accelerated mouse prone 8 (SAMP8) mouse strain. In vitro experiments showed that DOP pretreatment contributed to BV2 cells shifting from proinflammatory to anti-inflammatory phenotypes with enhanced Aβ clearance in response to Aβ insults. For the in vivo study, mice were chronically treated with DOP in drinking water from 4 to 7 months of age. The results showed that DOP remarkably attenuated cognitive decline in SAMP8 mice. DOP also inhibited the increased hippocampal microglial activation in SAMP8 mice with downregulation of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), while interleukin-10 (IL-10), neprilysin (NEP) and insulin-degrading enzyme (IDE) were upregulated. The accumulation of hippocampal Aβ42 and phosphated Tau proteins in SAMP8 mice was also reduced. Taken together, our data suggest that Dendrobium has the potential to provide neuroprotection against AD-related cognitive impairment via modulation of microglial activation.
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Influence of light intensity and water content of medium on total dendrobine of Dendrobium nobile Lindl. ASIAN PAC J TROP MED 2017; 10:1095-1100. [PMID: 29203109 DOI: 10.1016/j.apjtm.2017.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 09/22/2017] [Accepted: 10/15/2017] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE To ascertain the influence of light intensity and water content of medium on the total dendrobine of Dendrobium nobile (D. nobile). METHOD The principal component analysis combined with total dendrobine accumulation was conducted to assess the yield and quality of D. nobile in all treatments. In the experiment, D. nobile plants were cultivated in greenhouse as tested materials, and complete test of 9 treatments was adopted with relative light intensities 75.02%, 39.74%, 29.93% and relative water content of medium 50%, 65%, 80%. The plants were treated in June and harvested till December. Indexes including agronomic traits, fresh weight and dry weight of stem and leaf, ash content, extract, and dendrobine were measured. RESULTS Under the light intensity treatments of 75.02% with 50%, 65%, 80% water content of medium, the basal stems of plants were comparatively thicker with more leaves, and the fresh weight and dry weight of stems and leaves were significantly higher than other 6 treatments. Leaves in all treatments contained dendrobine. Under the light intensity treatments of 75.02% with 50%, 65%, 80% water content of medium, dendrobine content of leaves was lower while dendrobine contents of other treatments were more than 0.60%. After comprehensive assessment through the principal component analysis and total dendrobine accumulation, the results showed that 3 treatments with relative light intensity of 75.02% ranked the top three. CONCLUSIONS In brief, the moderately strong light intensity and water content of medium from low to medium can facilitate the growth and yield of D. nobile plants, while light intensity from moderately weak to weak can enhance the dendrobine content.
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