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Liu Q, Cui H, Yang W, Wang F, Liao H, Zhu Q, Qin S, Lu P. Soil conditioner improves soil properties, regulates microbial communities, and increases yield and quality of Uncaria rhynchophylla. Sci Rep 2024; 14:13398. [PMID: 38862626 PMCID: PMC11167052 DOI: 10.1038/s41598-024-64362-4] [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: 03/14/2024] [Accepted: 06/07/2024] [Indexed: 06/13/2024] Open
Abstract
Uncaria rhynchophylla is an important traditional herbal medicine in China, and the yield and quality of Uncaria rhynchophylla can be improved by suitable soil conditioners because of changing the soil properties. In this paper, Uncaria rhynchophylla associated alkaloids and soil microbial communities were investigated. The field experiment was set up with the following control group: (M1, no soil conditioner) and different soil conditioner treatment groups (M2, biomass ash; M3, water retention agent; M4, biochar; M5, lime powder and M6, malic acid). The results showed that M2 significantly increased the fresh and dry weight and the contents of isorhynchophylline, corynoxeine, isocorynoxeine, and total alkaloids. Acidobacteria, Proteobacteria, Actinobacteria, and Chloroflexi were major bacterial phyla. Correlation analysis showed that fresh and dry weight was significantly positively correlated with Acidobacteria, while alkali-hydrolyzable nitrogen, phosphatase activity, fresh and dry weight, corynoxeine, and isocorynoxeine were significantly negatively correlated with Chloroflexi. The application of soil conditioner M2 increased the abundance of Acidobacteria and decreased the abundance of Chloroflexi, which contributed to improving the soil nutrient content, yield, and quality of Uncaria rhynchophylla. In summary, biomass ash may be a better choice of soil conditioner in Uncaria rhynchophylla growing areas.
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Affiliation(s)
- Qian Liu
- Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Honghao Cui
- Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China
- Institute of Soil Fertilizer, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China
| | - Wansheng Yang
- Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China
| | - Fang Wang
- Guizhou Industry Polytechnic College, Guiyang, 550008, China
| | - Heng Liao
- Institute of Soil Fertilizer, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China
| | - Qing Zhu
- Institute of Soil Fertilizer, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China
| | - Song Qin
- Institute of Soil Fertilizer, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, China.
| | - Ping Lu
- Center for R&D of Fine Chemicals, Guizhou University, Guiyang, 550025, China.
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Cao R, Wang Y, Zhou Y, Zhu J, Zhang K, Liu W, Feng F, Qu W. Advanced researches of traditional uses, phytochemistry, pharmacology, and toxicology of medical Uncariae Ramulus Cum Uncis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 325:117848. [PMID: 38336181 DOI: 10.1016/j.jep.2024.117848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 11/09/2023] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Medical Uncariae Ramulus Cum Uncis consists of Uncaria rhynchophylla (Miq.) Miq. ex Havil, Uncaria macrophylla Wall, Uncaria sinensis (Oliv.) Havil, Uncaria hirsuta Havil, and Uncaria sessilifructus Roxb, which belongs to the species widely used in the genus Uncaria. These species resource widely distributed in China and abroad, and the hook-bearing stem is the primary constituent enrichment site. There are many different forms and architectures of chemicals, depending on the extraction site. Traditional remedies employing URCU had been used widely in antiquity and were first compiled in renowned ancient masterpiece 'Mingyi Bielu ()' written by Hongjing Tao. In modern pharmacological studies, both the total extracts and the phytoconstituents isolated from URCU have been shown to have neuroprotective, antioxidant, anti-inflammatory, anticancer, antibacterial, and autophagy-enhancer properties. AIM OF THE STUDY This review concentrates on the traditional uses, phytochemistry, pharmacology, toxicology, and nanomaterials studies of URCU, with a perspective to assist with further research and advance. MATERIAL AND METHODS The Chinese and English literature studies of this review are based on these database searches including Science Direct, CNKI, Wiley online library, Spring Link, Web of Science, PubMed, Medalink, Google scholar, Elsevier, ACS Publications, iPlant, Missouri Botanical Garden, Plant of the World Online. The pertinent data on URCU was gathered. RESULTS Based on the examination of the genus Uncaria, 107 newly marked chemical compositions have been identified from URCU from 2015 to present, including alkaloids, terpenoids, flavonoids, steroids, and others. Pharmacological studies have demonstrated that URCU has a variety of benefits in diseases such as neurodegenerative diseases, cancer, cardiovascular diseases, diabetes, and migraine, due to its neuroprotective, anti-inflammatory, antioxidant, anti-tumor, anti-bacterial and anti-viral properties. According to metabolic and toxicological studies, the dosage, frequency, and interactions of the drugs that occur in vivo are of great significance for determining whether the organic bodies can perform efficacy or produce toxicity. The research on URCU-mediated nanomaterials is expanding and increasing in order to address the inadequacies of conventional Chinese medicine. The alkaloids in URCU have the capability to self-assemble with other classes of components in addition to being biologically active. CONCLUSION URCU plants are widely distributed, abundant in chemical constituents, and widely used in both traditional and modern medicine for a variety of pharmacological effects. The utilization of herbal medicines can be raised by assessing the pharmacological distinctions among several species within the same genus and may accelerate the modernization of traditional Chinese medicine. Controlling the concentration of drug administration, monitoring metabolic markers, and inventing novel nanotechnologies are effective strategies for synergistic influence and detoxification to alleviate the main obstacles that toxicity, low bioavailability, and poor permeability. This review can assist further research and advances.
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Affiliation(s)
- Ruolian Cao
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Yuanyuan Wang
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Ya Zhou
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Jiaxin Zhu
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Kexin Zhang
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China
| | - Wenyuan Liu
- Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, 210009, China
| | - Feng Feng
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China; Nanjing Medical University, Nanjing, 211198, China
| | - Wei Qu
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 210009, China.
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Mu D, Shao Y, He J, Zhu L, Qiu D, Wilson IW, Zhang Y, Pan L, Zhou Y, Lu Y, Tang Q. Evaluation of Reference Genes for Normalizing RT-qPCR and Analysis of the Expression Patterns of WRKY1 Transcription Factor and Rhynchophylline Biosynthesis-Related Genes in Uncaria rhynchophylla. Int J Mol Sci 2023; 24:16330. [PMID: 38003520 PMCID: PMC10671239 DOI: 10.3390/ijms242216330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 11/26/2023] Open
Abstract
Uncaria rhynchophylla (Miq.) Miq. ex Havil, a traditional medicinal herb, is enriched with several pharmacologically active terpenoid indole alkaloids (TIAs). At present, no method has been reported that can comprehensively select and evaluate the appropriate reference genes for gene expression analysis, especially the transcription factors and key enzyme genes involved in the biosynthesis pathway of TIAs in U. rhynchophylla. Reverse transcription quantitative PCR (RT-qPCR) is currently the most common method for detecting gene expression levels due to its high sensitivity, specificity, reproducibility, and ease of use. However, this methodology is dependent on selecting an optimal reference gene to accurately normalize the RT-qPCR results. Ten candidate reference genes, which are homologues of genes used in other plant species and are common reference genes, were used to evaluate the expression stability under three stress-related experimental treatments (methyl jasmonate, ethylene, and low temperature) using multiple stability analysis methodologies. The results showed that, among the candidate reference genes, S-adenosylmethionine decarboxylase (SAM) exhibited a higher expression stability under the experimental conditions tested. Using SAM as a reference gene, the expression profiles of 14 genes for key TIA enzymes and a WRKY1 transcription factor were examined under three experimental stress treatments that affect the accumulation of TIAs in U. rhynchophylla. The expression pattern of WRKY1 was similar to that of tryptophan decarboxylase (TDC) under ETH treatment. This research is the first to report the stability of reference genes in U. rhynchophylla and provides an important foundation for future gene expression analyses in U. rhynchophylla. The RT-qPCR results indicate that the expression of WRKY1 is similar to that of TDC under ETH treatment. It may coordinate the expression of TDC, providing a possible method to enhance alkaloid production in the future through synthetic biology.
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Affiliation(s)
- Detian Mu
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China
| | - Yingying Shao
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China
| | - Jialong He
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China
| | - Lina Zhu
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China
| | - Deyou Qiu
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Iain W Wilson
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Agriculture and Food, Canberra, ACT 2601, Australia
| | - Yao Zhang
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China
| | - Limei Pan
- Key Laboratory of Guangxi for High-Quality Formation and Utilization of Dai-di Herbs, Guangxi Botanical Garden of Medicinal Plants, Nanning 530023, China
| | - Yu Zhou
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China
| | - Ying Lu
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China
| | - Qi Tang
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China
- Hunan Provincial Key Laboratory for Synthetic Biology of Traditional Chinese Medicine, Hunan University of Medicine, Changsha 410208, China
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Wu J, Cao M, Peng Y, Dong B, Jiang Y, Hu C, Zhu P, Xing W, Yu L, Xu R, Chen Z. Research progress on the treatment of epilepsy with traditional Chinese medicine. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 120:155022. [PMID: 37647670 DOI: 10.1016/j.phymed.2023.155022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 03/18/2023] [Accepted: 08/10/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Traditional Chinese Medicine (TCM) system is a medical system that has been expanding for thousands of years that was formed by the extensive clinical practice experience of many physicians and the accumulation of personal medication habits in China. In TCM, there is a history of long-term medication for epilepsy, the main treatment for epilepsy is TCM drugs and its prescription, supplemented by TCM modalities such as acupuncture therapy, moxibustion therapy, tuina, emotion adjustment therapy, etc. PURPOSE: With the modernization of TCM, the active ingredients and molecular mechanisms of TCM for epilepsy treatment have been gradually revealed. This review aimed to comprehensively summarize the TCM treatment of epilepsy, focusing on the current TCM drugs and some TCM formulae for the treatment of epilepsy, and to discuss the research progress of TCM for the treatment of epilepsy, and to provide a reference to develop future related studies in this field. MATERIALS AND METHODS The mechanism of action of antiepileptic drugs (AEDs) was interpreted from different perspectives by searching online databases and querying various materials identify drugs used in both modern medicine and TCM systems for the treatment of epilepsy. We collected all relevant TCM for epilepsy literature published in the last 30 years up to December 2022 from electronic databases such as PubMed, CNKI and Web of Science, and statistically analyzed the literature for the following keyword information. The search terms comprise the keywords "TCM", "phytochemistry", "pharmacological activity", "epilepsy" and "traditional application" as a combination. Scientific plant names were provided by "The Plant List" (www.theplantlist.org). RESULTS Epilepsy is a complex and serious disease of the brain and nervous system. At present, the treatment of epilepsy in modern medicine is mainly surgery and chemotherapy, but there are many serious side effects. By summarizing the treatment of epilepsy in TCM, it is found that there are various methods to treat epilepsy in TCM, mainly TCM drugs and its formulae. Many TCM drugs have antiepileptic effects. Now found that the main effective TCM drugs for the treatment of epilepsy are Curcumae Longae Rhizoma, Scorpio, Acori Tatarinowii Rhizoma, Uncariae Ramulus Cum Uncis and Ganoderma, etc. And the main compounds that play a role in the treatment of epilepsy are curcumin, gastrodin, ligustrazine, baicalin and rhynchophylline, etc. These TCM drugs have played an important role in the treatment of epilepsy in TCM clinic. However, the chemically active components of these TCM drugs are diverse and their mechanisms of action are complex, which are not fully understood and need to be further explored. CONCLUSIONS TCM treats epilepsy in a variety of ways, and with the discovery of a variety of potential bioactive substances for treatment of epilepsy. With the new progress in the research of other TCM treatment methods for epilepsy, TCM will have greater potential in the clinical application of epilepsy.
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Affiliation(s)
- Jie Wu
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Mayijie Cao
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Ying Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Baohua Dong
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Yunxiu Jiang
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Changjiang Hu
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Pengjin Zhu
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Weidei Xing
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China
| | - Lingying Yu
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China.
| | - Runchun Xu
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China.
| | - Zhimin Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, school of pharmacy, Chengdu University of Traditional Chinese Medicine, 1166 Liutai Avenue, Wenjiang District, Chengdu, Sichuan, China.
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Labani N, Gbahou F, Noblet M, Masri B, Broussaud O, Liu J, Jockers R. Pistacia vera Extract Potentiates the Effect of Melatonin on Human Melatonin MT 1 and MT 2 Receptors with Functional Selectivity. Pharmaceutics 2023; 15:1845. [PMID: 37514032 PMCID: PMC10386454 DOI: 10.3390/pharmaceutics15071845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/23/2023] [Accepted: 06/23/2023] [Indexed: 07/30/2023] Open
Abstract
Melatonin is a tryptophan derivative synthesized in plants and animals. In humans, melatonin acts on melatonin MT1 and MT2 receptors belonging to the G protein-coupled receptor (GPCR) family. Synthetic melatonin receptor agonists are prescribed for insomnia and depressive and circadian-related disorders. Here, we tested 25 commercial plant extracts, reported to have beneficial properties in sleep disorders and anxiety, using cellular assays (2─[125I]iodomelatonin binding, cAMP inhibition, ERK1/2 activation and β-arrestin2 recruitment) in mock-transfected and HEK293 cells expressing MT1 or MT2. Various melatonin receptor-dependent and -independent effects were observed. Extract 18 (Ex18) from Pistacia vera dried fruits stood out with very potent effects in melatonin receptor expressing cells. The high content of endogenous melatonin in Ex18 (5.28 ± 0.46 mg/g extract) is consistent with this observation. Ex18 contains an additional active principle that potentiates the effect of melatonin on Gi protein-dependent pathways but not on β-arrestin2 recruitment. Further active principles potentiating exogenous melatonin were detected in several extracts. In conclusion, we identified plant extracts with various effects in GPCR-based binding and signalling assays and identified high melatonin levels and a melatonin-potentiating activity in Pistacia vera dried fruit extracts that might be of therapeutic potential.
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Affiliation(s)
- Nedjma Labani
- Cellular Signaling Laboratory, International Research Center for Sensory Biology and Technology of MOST, Key Laboratory of Molecular Biophysics of Ministry of Education, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
- Institut Cochin, CNRS, INSERM, University of Paris, F-75014 Paris, France
| | - Florence Gbahou
- Institut Cochin, CNRS, INSERM, University of Paris, F-75014 Paris, France
| | - Marc Noblet
- Science Hub, Sanofi Consumer Healthcare, F-75017 Paris, France
| | - Bernard Masri
- Institut Cochin, CNRS, INSERM, University of Paris, F-75014 Paris, France
| | | | - Jianfeng Liu
- Cellular Signaling Laboratory, International Research Center for Sensory Biology and Technology of MOST, Key Laboratory of Molecular Biophysics of Ministry of Education, School of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ralf Jockers
- Institut Cochin, CNRS, INSERM, University of Paris, F-75014 Paris, France
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Guo E, Yuan M, Xu L, Ren Q, Wang Z, Li Z, Wu Z, Liu W, Zhao Y, Feng F, Xu J. Identification of three key enzymes involved in the biosynthesis of tetracyclic oxindole alkaloids in Uncaria rhynchophylla. Bioorg Chem 2023; 136:106545. [PMID: 37087849 DOI: 10.1016/j.bioorg.2023.106545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 04/25/2023]
Abstract
Tetracyclic oxindole alkaloids (TOAs), main active ingredients of Uncaria rhynchophylla (UR), has inspired the interest of pharmacologists and chemists because of its great potential in the treatment of the diseases of the nervous system and cardiovascular system and its special spirooxindole scaffold, but the biosynthetic pathway of this compounds is still unknown. In this work, the metabolomics and transcriptomics of hook, leaf and stem of UR were analyzed, and 31 alkaloids and 47,423 unigenes were identified, as well as the relative contents of these alkaloids were evaluated. Based on the above results and literatures, a proposal biosynthetic pathway for TOAs was devised. Furthermore, three unigenes were suggested mediating the biosynthesis of TOAs through the integrated analysis of metabolomics and transcriptomics, and three enzymes, tryptophan decarboxylase, strictosidine synthase and strictosidine-β-d-glucosidase, were identified as important catalytic enzymes for the synthesis of tryptamine, strictosidine (7) and 4,21-dehydrogeissochizine, respectively, which are considered as the important precursors of TOAs.
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Affiliation(s)
- Eryan Guo
- Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Mengting Yuan
- Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Lijun Xu
- Tibetan University of Tibetan Medicine, Lhasa 850007, China
| | - Qinjia Ren
- Tibetan University of Tibetan Medicine, Lhasa 850007, China
| | - Zihan Wang
- Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Zixin Li
- Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Zongyao Wu
- Tibetan University of Tibetan Medicine, Lhasa 850007, China
| | - Wenyuan Liu
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing 210009, China
| | - Yucheng Zhao
- Department of Resources Science of Traditional Chinese Medicines, School of Traditional Chinese Pharmacy, and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
| | - Feng Feng
- Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China; Jiangsu Food and Pharmaceutical Science College, Huaian 223003, China; School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.
| | - Jian Xu
- Department of Natural Medicinal Chemistry, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, China; Tibetan University of Tibetan Medicine, Lhasa 850007, China.
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Jiang CX, Yu JX, Fei X, Pan XJ, Zhu NN, Lin CL, Zhou D, Zhu HR, Qi Y, Wu ZG. Gene coexpression networks allow the discovery of two strictosidine synthases underlying monoterpene indole alkaloid biosynthesis in Uncaria rhynchophylla. Int J Biol Macromol 2023; 226:1360-1373. [PMID: 36442554 DOI: 10.1016/j.ijbiomac.2022.11.249] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/19/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
Plant-derived monoterpene indole alkaloids (MIAs) from Uncaria rhynchophylla (UR) have huge medicinal properties in treating Alzheimer's disease, Parkinson's disease, and depression. Although many bioactive UR-MIA products have been isolated as drugs, their biosynthetic pathway remains largely unexplored. In this study, untargeted metabolome identified 79 MIA features in UR tissues (leaf, branch stem, hook stem, and stem), of which 30 MIAs were differentially accumulated among different tissues. Short time series expression analysis captured 58 pathway genes and 12 hub regulators responsible for UR-MIA biosynthesis and regulation, which were strong links with main UR-MIA features. Coexpression networks further pointed to two strictosidine synthases (UrSTR1/5) that were coregulated with multiple MIA-related genes and highly correlated with UR-MIA features (r > 0.7, P < 0.005). Both UrSTR1/5 catalyzed the formation of strictosidine with tryptamine and secologanin as substrates, highlighting the importance of key residues (UrSTR1: Glu309, Tyr155; UrSTR5: Glu295, Tyr141). Further, overexpression of UrSTR1/5 in UR hairy roots constitutively increased the biosynthesis of bioactive UR-MIAs (rhynchophylline, isorhynchophylline, corynoxeine, etc), whereas RNAi of UrSTR1/5 significantly decreased UR-MIA biosynthesis. Collectively, our work not only provides candidates for reconstituting the biosynthesis of bioactive UR-MIAs in heterologous hosts but also highlights a powerful strategy for mining natural product biosynthesis in medicinal plants.
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Affiliation(s)
- Cheng-Xi Jiang
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Jia-Xing Yu
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Xuan Fei
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Xiao-Jun Pan
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Ning-Ning Zhu
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Chong-Liang Lin
- The 1(st) Affiliated Hospital of WMU, The 1(st) School of Medicine, Wenzhou Medical University, Wenzhou 325025, China
| | - Dan Zhou
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Hao-Ru Zhu
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Yu Qi
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Zhi-Gang Wu
- Key Laboratory of Traditional Chinese Medicine Research, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China.
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Recent Advances in Nanomaterials for Asthma Treatment. Int J Mol Sci 2022; 23:ijms232214427. [PMID: 36430906 PMCID: PMC9696023 DOI: 10.3390/ijms232214427] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/22/2022] Open
Abstract
Asthma is a chronic airway inflammatory disease with complex mechanisms, and these patients often encounter difficulties in their treatment course due to the heterogeneity of the disease. Currently, clinical treatments for asthma are mainly based on glucocorticoid-based combination drug therapy; however, glucocorticoid resistance and multiple side effects, as well as the occurrence of poor drug delivery, require the development of more promising treatments. Nanotechnology is an emerging technology that has been extensively researched in the medical field. Several studies have shown that drug delivery systems could significantly improve the targeting, reduce toxicity and improve the bioavailability of drugs. The use of multiple nanoparticle delivery strategies could improve the therapeutic efficacy of drugs compared to traditional delivery methods. Herein, the authors presented the mechanisms of asthma development and current therapeutic methods. Furthermore, the design and synthesis of different types of nanomaterials and micromaterials for asthma therapy are reviewed, including polymetric nanomaterials, solid lipid nanomaterials, cell membranes-based nanomaterials, and metal nanomaterials. Finally, the challenges and future perspectives of these nanomaterials are discussed to provide guidance for further research directions and hopefully promote the clinical application of nanotherapeutics in asthma treatment.
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Jiang S, Yang X, Wang Z, Gan C, Huang J, Sun J, Peng H, Wei F, Wang Z, Yang C. Biotransformation and pharmacokinetic studies of four alkaloids from Uncaria rhynchophylla in rat plasma by ultra-performance liquid chromatography with tandem mass spectrometry. J Pharm Biomed Anal 2022; 218:114858. [DOI: 10.1016/j.jpba.2022.114858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 05/17/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
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Su MT, Jheng YS, Lu CW, Wu WJ, Yang SY, Chuang WC, Lee MC, Wu CH. Neurotherapy of Yi-Gan-San, a Traditional Herbal Medicine, in an Alzheimer's Disease Model of Drosophila melanogaster by Alleviating Aβ 42 Expression. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11040572. [PMID: 35214904 PMCID: PMC8878444 DOI: 10.3390/plants11040572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/19/2022] [Accepted: 02/19/2022] [Indexed: 05/13/2023]
Abstract
Alzheimer's disease (AD), a main cause of dementia, is the most common neurodegenerative disease that is related to the abnormal accumulation of amyloid β (Aβ) proteins. Yi-Gan-San (YGS), a traditional herbal medicine, has been used for the management of neurodegenerative disorders and for the treatment of neurosis, insomnia and dementia. The aim of this study was to examine antioxidant capacity and cytotoxicity of YGS treatment by using 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays in vitro. We explored neuroprotective effects of YGS treatment in alleviating Aβ neurotoxicity of Drosophila melanogaster in vivo by comparing survival rate, climbing index, and Aβ expressions through retinal green fluorescent protein (GFP) expression, highly sensitive immunomagnetic reduction (IMR) and Western blotting assays. In the in vitro study, our results showed that scavenging activities of free radical and SH-SY5Y nerve cell viability were increased significantly (p < 0.01-0.05). In the in vivo study, Aβ42-expressing flies (Aβ42-GFP flies) and their WT flies (mCD8-GFP flies) were used as an animal model to examine the neurotherapeutic effects of YGS treatment. Our results showed that, in comparison with those Aβ42 flies under sham treatments, Aβ42 flies under YGS treatments showed a greater survival rate, better climbing speed, and lower Aβ42 aggregation in Drosophila brain tissue (p < 0.01). Our findings suggest that YGS should have a beneficial alternative therapy for AD and dementia via alleviating Aβ neurotoxicity in the brain tissue.
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Affiliation(s)
- Ming-Tsan Su
- School of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan; (M.-T.S.); (Y.-S.J.); (C.-W.L.); (W.-J.W.)
| | - Yong-Sin Jheng
- School of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan; (M.-T.S.); (Y.-S.J.); (C.-W.L.); (W.-J.W.)
| | - Chen-Wen Lu
- School of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan; (M.-T.S.); (Y.-S.J.); (C.-W.L.); (W.-J.W.)
| | - Wen-Jhen Wu
- School of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan; (M.-T.S.); (Y.-S.J.); (C.-W.L.); (W.-J.W.)
| | | | | | - Ming-Chung Lee
- Brion Research Institute of Taiwan, Taipei 23143, Taiwan;
| | - Chung-Hsin Wu
- School of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan; (M.-T.S.); (Y.-S.J.); (C.-W.L.); (W.-J.W.)
- Correspondence:
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Lv C, Li H, Cui H, Bi Q, Wang M. Solid lipid nanoparticle delivery of rhynchophylline enhanced the efficiency of allergic asthma treatment via the upregulation of suppressor of cytokine signaling 1 by repressing the p38 signaling pathway. Bioengineered 2021; 12:8635-8649. [PMID: 34629023 PMCID: PMC8806963 DOI: 10.1080/21655979.2021.1988364] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Allergic asthma is one of the most common chronic airway diseases, and there is still a lack of effective drugs for the treatment of allergic asthma. The purpose of this work is to formulate rhynchophylline (Rhy)-solid lipid nanoparticles (SLNs) to improve their therapeutic efficacy in a mice allergic model of asthma. A solvent injection method was employed to prepare the Rhy-SLNs. Physicochemical characterization of Rhy-SLNs was measured, and the release assessment was investigated, followed by the release kinetics. Next, a model of murine experimental asthma was established. Mice were subcutaneously injected with 20 μg ovalbumin mixed with 1 mg aluminum hydroxide on days 0, 14, 28, and 42 and administrated aerosolized 1% ovalbumin (w/v) by inhalation from day 21 to day 42. Mice were intraperitoneally injected with 20 mg/kg Rhy-SLNs or Rhy at one hour before the airway challenge with ovalbumin. The results showed that Rhy-SLNs revealed a mean particle size of 62.06 ± 1.62 nm with a zeta potential value of −6.53 ± 0.04 mV and 82.6 ± 1.8% drug entrapment efficiency. The release curve of Rhy-SLNs was much higher than the drug released in phosphate buffer saline at 0, 1, 1.5, 2, 4, or 6 h. Moreover, Rhy-SLNs exerted better effects on inhibiting ovalbumin-induced airway inflammation, oxidative stress, airway remodeling (including collagen deposition and mucus gland hyperplasia) than Rhy in murine experimental asthma. Subsequently, we found that Rhy-SLNs relieved allergic asthma via the upregulation of the suppressor of cytokine signaling 1 by repressing the p38 signaling pathway.
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Affiliation(s)
- Chuanfeng Lv
- Department of Pharmacology, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Hui Li
- Department of Medical Affairs, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Hongxia Cui
- Department of Respiratory Oncology, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Qianyu Bi
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Meng Wang
- Department of Medical Affairs, Jining No.1 People's Hospital, Jining, Shandong, China
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Hirsutine ameliorates hepatic and cardiac insulin resistance in high-fat diet-induced diabetic mice and in vitro models. Pharmacol Res 2021; 177:105917. [PMID: 34597809 DOI: 10.1016/j.phrs.2021.105917] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/23/2021] [Accepted: 09/26/2021] [Indexed: 12/23/2022]
Abstract
Closely associated with type 2 diabetes mellitus (T2DM), hepatic steatosis and cardiac hypertrophy resulting from chronic excess intake can exacerbate insulin resistance (IR). The current study aims to investigate the pharmacological effects of hirsutine, one indole alkaloid isolated from Uncaria rhynchophylla, on improving hepatic and cardiac IR, and elucidate the underlying mechanism. T2DM and IR in vivo were established by high-fat diet (HFD) feeding for 3 months in C57BL/6J mice. In vitro IR models were induced by high-glucose and high-insulin (HGHI) incubation in HepG2 and H9c2 cells. Hirsutine administration for 8 weeks improved HFD-induced peripheral hyperglycemia, glucose tolerance and IR by OGTT and ITT assays, and simultaneously attenuated hepatic steatosis and cardiac hypertrophy by pathological observation. The impaired p-Akt expression was activated by hirsutine in liver and heart tissues of HFD mice, and also in the models in vitro. Hirsutine exhibited the effects on enhancing glucose consumption and uptake in IR cell models via activating phosphatidylinositol 3-kinase (PI3K)/Akt pathway, which was blocked by PI3K inhibitor LY294002. Moreover, the effect of hirsutine on promoting glucose uptake and GLUT4 expression in HGHI H9c2 cells was also prevented by Compound C, an inhibitor of AMP-activated protein kinase (AMPK). Enhancement of glycolysis might be another factor of hirsutine showing its effects on glycemic control. Collectively, it was uncovered that hirsutine might exert beneficial effects on regulating glucose homeostasis, thus improving hepatic and cardiac IR, and could be a promising compound for treating diet-induced T2DM.
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Zhang JG, Huang XY, Ma YB, Chen JJ, Geng CA. UFLC-PDA-MS/MS Profiling of Seven Uncaria Species Integrated with Melatonin/5-Hydroxytryptamine Receptors Agonistic Assay. NATURAL PRODUCTS AND BIOPROSPECTING 2020; 10:23-36. [PMID: 31933166 PMCID: PMC7046893 DOI: 10.1007/s13659-020-00230-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 01/06/2020] [Indexed: 05/07/2023]
Abstract
Uncariae Ramulus Cum Uncis (Gou-Teng), the dried hook-bearing stems of several Uncaria plants (Rubiaceae), is a well-known herbal medicine in China. The clinical application of Gou-Teng is bewildered for the morphological and chemical similarity between different species. In order to discern their chemical and biological difference, an ultra-fast liquid chromatography equipped with ion trap time-of-flight mass spectrometry (UFLC-IT/TOF-MS) combining with melatonin (MT1 and MT2) and 5-hydroxytryptamine (5-HT1A and 5-HT2C) receptors agonistic assay in vitro was conducted on seven Uncaria species. As a result, 57 compounds including 35 indole alkaloids, ten flavonoids, five triterpenoids, five chlorogenic analogues, and two other compounds were characterized based on their MS/MS patterns and UV absorptions. Specifically, cadambine-type and corynanthein-type alkaloids were exclusively present in U.rhynchophylla and U.scandens, whereas corynoxine-type alkaloids were commonly detected in all the seven Uncaria plants. Three Uncaria species, U. rhynchophylla, U. macrophylla, and U. yunnanensis showed obviously agnostic activity on four neurotransmitter receptors (MT1, MT2, 5-HT1A, and 5-HT2C). This first-time UFLCMS-IT-TOF analyses integrated with biological assay on seven Uncaria plants will provide scientific viewpoints for the clinical application of Gou-Teng.
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Affiliation(s)
- Jian-Gang Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, 132# Lanhei Road, Kunming, 650201, Yunnan, People's Republic of China
| | - Xiao-Yan Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, 132# Lanhei Road, Kunming, 650201, Yunnan, People's Republic of China
| | - Yun-Bao Ma
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, 132# Lanhei Road, Kunming, 650201, Yunnan, People's Republic of China
| | - Ji-Jun Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, 132# Lanhei Road, Kunming, 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Chang-An Geng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry, 132# Lanhei Road, Kunming, 650201, Yunnan, People's Republic of China.
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Wang M, Guo J, Wang Z, Zhang G, Yu H, Chang R, Chen A. Simultaneous separation and determination of hirsutine and hirsuteine by cyclodextrin-modified micellar electrokinetic capillary chromatography. PHYTOCHEMICAL ANALYSIS : PCA 2020; 31:112-118. [PMID: 31328320 DOI: 10.1002/pca.2871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/26/2019] [Accepted: 06/03/2019] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Hirsutine and hirsuteine are the main pharmacological activity ingredients of Uncaria rhynchophylla (UR), playing an important role in treating mental and cardiovascular diseases, such as Alzheimer's disease, hypertension, Parkinson's disease, potential anti-cancer activities and so on. OBJECTIVE To develop a cyclodextrin-modified micellar electrokinetic capillary chromatography (CD-MEKC) method for the simultaneous separation and determination of hirsutine and hirsuteine from UR and its formulations. METHODOLOGY The optimal method was developed by investigating influences of significant factors on the separation, and this method was successfully applied for the determination of hirsutine and hirsuteine in UR and its formulations. RESULTS The optimal background electrolyte (BGE) consisted of 40 mM sodium dihydrogen phosphate (pH 7.0), 150 mM 2,6-dimethyl-β-cyclodextrin (DM-β-CD), 3 mM mono-(6-ethylenediamine-6-deoxy)-β-cyclodextrin (ED-β-CD), and 30 mM sodium cholate (SC). Under these conditions, hirsutine and hirsuteine were successfully separated within 13 min at the separation voltage of 15 kV, temperature of 25°C and the detection wavelength of 224 nm. For the analytes, linear calibration curves were performed within the range 5.0-160.0 μg/mL. The limit of detection (LOD, S/N = 3) and the limit of quantitation (LOQ, S/N = 10) were 0.41, 1.42 μg/mL for hirsutine and 0.60, 2.17 μg/mL for hirsuteine, respectively. The recoveries of three samples were from 97.9% to 102.3%. CONCLUSION The method was successfully applied to the determination of hirsutine and hirsuteine in UR and its formulations. Meanwhile, it provides an effective reference of the quality control of UR and its formulations.
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Affiliation(s)
- Mengli Wang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Jing Guo
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Zhiying Wang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Guangbin Zhang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Haixia Yu
- Translational Medicine Research Centre, Shanxi Medical University, Taiyuan, P. R. China
| | - Ruimiao Chang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Anjia Chen
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
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Comparative study of the glucosinolate profiles in turnip from four agroclimatic zones of china and neighboring countries. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-019-00200-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Han A, Lin G, Cai J, Wu Q, Geng P, Ma J, Wang X, Lin C. Pharmacokinetic study on hirsutine and hirsuteine in rats using UPLC–MS/MS. ACTA CHROMATOGR 2019. [DOI: 10.1556/1326.2017.00365] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Aixia Han
- Department of Pharmacy, The People's Hospital of Lishui, Lishui 323000, China
| | - Guanyang Lin
- Department of Pharmacy, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Jinzhang Cai
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Qing Wu
- Department of Pharmacy, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Peiwu Geng
- Department of Pharmacy, The People's Hospital of Lishui, Lishui 323000, China
| | - Jianshe Ma
- Analytical and Testing Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Xianqin Wang
- Analytical and Testing Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Chongliang Lin
- Department of Pharmacy, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
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Geng CA, Yang TH, Huang XY, Ma YB, Zhang XM, Chen JJ. Antidepressant potential of Uncaria rhynchophylla and its active flavanol, catechin, targeting melatonin receptors. JOURNAL OF ETHNOPHARMACOLOGY 2019; 232:39-46. [PMID: 30543912 DOI: 10.1016/j.jep.2018.12.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 12/02/2018] [Accepted: 12/08/2018] [Indexed: 05/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Traditional Chinese medicines (TCMs) are fascinating sources for natural drug candidates. Uncaria rhynchophylla (Gouteng) is a famous TCM used for alleviating central nervous system (CNS) disorders, while its antidepressant constituents are still disputed. AIM OF THE STUDY The present study was designed to assess the antidepressant property of U. rhynchophylla and characterize the active constituents targeting melatonin receptors which are closely related to CNS diseases. MATERIALS AND METHODS The total extract and each fraction of U. rhynchophylla were extensively assessed for their agonistic activity on melatonin receptors in vitro. The following bioassay-guided fractionation yielded the active constituents, whose activity was confirmed by dose-dependent bioassay and antagonistic experiment on HEK293 cells. Their antidepressant effects were evaluated on forced swimming test (FST), tail suspension test (TST) and open-field test (OFT) mice models in vivo. Their metabolic profiles in mice plasma were analyzed by LCMS-IT-TOF. RESULTS The stems and hooks of U. rhynchophylla were revealed with agonistic activity on melatonin receptors (MT1 and MT2). Under the guidance of bioassay, two flavanols, catechin and epicatechin were obtained and showed obviously activity agitating MT1 (EC50 = 25.8 and 156.1 μM) and MT2 (EC50 = 47.3 and 208.8 μM) receptors. The agonistic activity of catechin on melatonin receptors can be antagonized by luzindole at the concentrations of 1.57-100 μM. Catechin could significantly reduce the immobility time in both FST and TST mice models at doses of 80 and 40 mg/kg, without obvious effect on locomotor activity in OFT mice model. Five phase II (M1-M5) and one phase I (M6) metabolites of catechin were detected in mice plasma after intragastric (i.g.) administration. CONCLUSION Catechin is a potent antidepressant candidate from U. rhynchophylla by targeting melatonin receptors. The main metabolic pathways of catechin in mice plasma are glucuronidation (M3) and methylated glucuronidation (M4 and M5). This study provides valuable information for understanding the antidepressant potency of Gouteng and its active constituents.
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Affiliation(s)
- Chang-An Geng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming 650201, Yunnan, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, PR China
| | - Tong-Hua Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming 650201, Yunnan, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, PR China
| | - Xiao-Yan Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming 650201, Yunnan, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, PR China
| | - Yun-Bao Ma
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming 650201, Yunnan, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, PR China
| | - Xue-Mei Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming 650201, Yunnan, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, PR China
| | - Ji-Jun Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming 650201, Yunnan, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
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Alvarez-Rivera G, Ballesteros-Vivas D, Parada-Alfonso F, Ibañez E, Cifuentes A. Recent applications of high resolution mass spectrometry for the characterization of plant natural products. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.01.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Zhang JG, Huang XY, Ma YB, Zhang XM, Chen JJ, Geng CA. Dereplication-guided isolation of a new indole alkaloid triglycoside from the hooks of Uncaria rhynchophylla
by LC with ion trap time-of-flight MS. J Sep Sci 2018; 41:1532-1538. [PMID: 29274199 DOI: 10.1002/jssc.201701175] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 11/11/2017] [Accepted: 12/13/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Jian-Gang Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming P. R. China
- Yunnan Key Laboratory of Natural Medicinal Chemistry; Kunming P. R. China
| | - Xiao-Yan Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming P. R. China
- Yunnan Key Laboratory of Natural Medicinal Chemistry; Kunming P. R. China
| | - Yun-Bao Ma
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming P. R. China
- Yunnan Key Laboratory of Natural Medicinal Chemistry; Kunming P. R. China
| | - Xue-Mei Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming P. R. China
- Yunnan Key Laboratory of Natural Medicinal Chemistry; Kunming P. R. China
| | - Ji-Jun Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming P. R. China
- Yunnan Key Laboratory of Natural Medicinal Chemistry; Kunming P. R. China
| | - Chang-An Geng
- State Key Laboratory of Phytochemistry and Plant Resources in West China; Kunming Institute of Botany; Chinese Academy of Sciences; Kunming P. R. China
- Yunnan Key Laboratory of Natural Medicinal Chemistry; Kunming P. R. China
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