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Hu Y, Pan R, Wang Y, Ma M, Peng Y, Fan W, Zhang R, Nian H, Zhu J. Daphne genkwa: Ethnopharmacology, phytochemistry and pharmacology of an important traditional Chinese medicine. Fitoterapia 2024; 177:106089. [PMID: 38906384 DOI: 10.1016/j.fitote.2024.106089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 05/20/2024] [Accepted: 06/16/2024] [Indexed: 06/23/2024]
Abstract
Daphne genkwa, as a traditional medicine, is widely distributed in China, Korea and Vietnam. In China, the dried flower buds of this plant are named "Yuanhua". It has the ability to effectively promote urination, eliminate phlegm and alleviate cough, eliminate parasites and cure of scabies, with a broad spectrum of pharmacological effects and considerable clinical efficacy. This paper provides a summary and classification of the main chemical constituents of D. genkwa based on a review of relevant domestic and foreign literature. It also outlines the current research status of traditional clinical usage, pharmacological effects, and toxicity of D. genkwa. The aim is to provide a theoretical basis for further study of D. genkwa and its potential new clinical applications.
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Affiliation(s)
- Yue Hu
- Department of Pharmacy, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Department of Pharmacy Research, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Rongrong Pan
- Department of Pharmacy Research, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Yi Wang
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Minghua Ma
- Department of Pharmacy, Yangpu Hospital, Tongji University School of Medicine, Shanghai 200090, China
| | - Ying Peng
- Department of Pharmacy, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Department of Pharmacy Research, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Weiqing Fan
- Department of Pharmacy, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Ruoxi Zhang
- Department of Pharmacy Research, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Hua Nian
- Department of Pharmacy, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China.
| | - Jianyong Zhu
- Department of Pharmacy, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, Yunnan 650500, China; Department of Pharmacy Research, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China.
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Bailly C. Yuanhuacin and Related Anti-Inflammatory and Anticancer Daphnane Diterpenes from Genkwa Flos-An Overview. Biomolecules 2022; 12:192. [PMID: 35204693 PMCID: PMC8961543 DOI: 10.3390/biom12020192] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 01/14/2022] [Accepted: 01/21/2022] [Indexed: 11/16/2022] Open
Abstract
The dried flower buds of the plant Daphne genkwa Sieb. et Zucc. have been largely used in traditional Chinese medicine for the treatment of inflammatory diseases. Numerous diterpenoids have been isolated from the Genkwa Flos (yuanhua in Chinese), including a series of daphnane-type diterpene designated as yuanhuacin (YC, often improperly designated as yuanhuacine) and analogues with a patronymic name. The series includes ten daphnane-type diterpenes: yuanhuacin, yuanhuadin (YD), yuanhuafin (YF), yuanhuagin (YG), yuanhuahin (YH), yuanhuajin (YJ), yuanhualin (YL), yuanhuamin (YM), yuanhuapin (YP), and yuanhuatin (YT). They are distinct from the rare flavonoid yuanhuanin. The series comprises several anticancer agents, such as the lead compound YC, which has revealed potent activity in vitro and in vivo against models of lung and breast cancers. The main signaling pathways implicated in the antitumor effects have been delineated. Protein kinase C is a key factor of activity for YC, but in general the molecular targets at the origin of the activity of these compounds remain little defined. Promising anticancer effects have been reported with analogues YD and YT, whereas compounds YF and YP are considered more toxic. The pharmacological activity of each compound is presented, as well as the properties of Genkwa Flos extracts. The potential toxic effects associated with the use of these compounds are also underlined.
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Nie YW, Li Y, Luo L, Zhang CY, Fan W, Gu WY, Shi KR, Zhai XX, Zhu JY. Phytochemistry and Pharmacological Activities of the Diterpenoids from the Genus Daphne. Molecules 2021; 26:6598. [PMID: 34771007 PMCID: PMC8588408 DOI: 10.3390/molecules26216598] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/28/2021] [Accepted: 10/28/2021] [Indexed: 01/08/2023] Open
Abstract
There are abundant natural diterpenoids in the plants of the genus Daphne from the Thymelaeaceae family, featuring a 5/7/6-tricyclic ring system and usually with an orthoester group. So far, a total of 135 diterpenoids has been isolated from the species of the genus Daphne, which could be further classified into three main types according to the substitution pattern of ring A and oxygen-containing functions at ring B. A variety of studies have demonstrated that these compounds exert a wide range of bioactivities both in vitro and in vivo including anticancer, anti-inflammatory, anti-HIV, antifertility, neurotrophic, and cholesterol-lowering effects, which is reviewed herein. Meanwhile, the fascinating structure-activity relationship is also concluded in this review in the hope of providing an easy access to available information for the synthesis and optimization of efficient drugs.
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Affiliation(s)
- Yi-Wen Nie
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
- Central Laboratory, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
| | - Yuan Li
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
- Central Laboratory, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
| | - Lan Luo
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
| | - Chun-Yan Zhang
- Central Laboratory, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
| | - Wei Fan
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
| | - Wei-Ying Gu
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
| | - Kou-Rong Shi
- Department of Pharmacy, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China; (Y.-W.N.); (Y.L.); (W.F.); (W.-Y.G.); (K.-R.S.)
| | - Xiao-Xiang Zhai
- Department of Dermatology, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
| | - Jian-Yong Zhu
- Central Laboratory, Seventh People’s Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200137, China;
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The genus Daphne: A review of its traditional uses, phytochemistry and pharmacology. Fitoterapia 2020; 143:104540. [PMID: 32165275 DOI: 10.1016/j.fitote.2020.104540] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/02/2020] [Accepted: 03/02/2020] [Indexed: 01/28/2023]
Abstract
The genus Daphne belongs to the Thymeleaceae family and contains over 90 species that are distributed in Asia, Europe and parts of North Africa. The species of the genus Daphne are used in the traditional medicine of China, Tibet, Korea, and the Middle East for the treatment of various conditions. A broad range of studies has shown the significant biological potential of these species as sources of biologically and pharmacologically active compounds. Daphne species are a source of several classes of valuable phytochemicals such as coumarins, flavonoids, lignans, steroids and different classes of terpenes. The phytochemical diversity of this genus is demonstrated by over 350 secondary metabolites isolated from various species. The genus possesses a broad spectrum of biological activities including antibacterial, antifungal, antioxidant, analgesic, anti-inflammatory, cytotoxic, antiviral, abortive and haemostatic effects. A variety of bioactive secondary metabolites found in this genus may have potential use in pharmaceutical, cosmetic and food industries. Thus, species belonging to the genus Daphne can be considered an important source both for the treatment of various disorders, due to the presence of a plethora of bioactive constituents with potent bioactivities, and as possible leads in the discovery and synthesis of new medications.
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Shirzadi Karamolah K, Mousavi F, Mahmoudi H. Antimicrobial inhibitory activity of aqueous, hydroalcoholic and alcoholic extracts of leaves and stem of Daphne mucronata on growth of oral bacteria. GMS HYGIENE AND INFECTION CONTROL 2017; 12:Doc16. [PMID: 28989855 PMCID: PMC5627145 DOI: 10.3205/dgkh000301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Background: Plants are a source of potential anti-infective agents. Daphne mucronata is a shrub in the family Thymelaeaceae, which has therapeutic effects. The aim of the present study was to evaluate the antimicrobial activity of aqueous, hydroalcoholic and alcoholic extracts of the leaves and stem of Daphne mucronata on the growth of oral bacteria. Materials and methods: Leaves and stem of Daphne mucronata were collected from the Zagros Mountains, Lorestan, Iran. They were air dried in the shade. Aqueous, hydroalcoholic and alcoholic extracts of Daphne mucronata were made by using classic techniques for solvent extraction of plant material. The antimicrobial effects of the Daphne mucronata extracts were evaluated using the agar disk diffusion method (ADDM) and the minimum inhibitory concentration (MIC). The data were analyzed using Duncan's test and ANOVA. Results: The results showed that the antimicrobial activity depended on the type of extract. The alcoholic extract of Daphne mucronata had the highest antibacterial activity and the highest effect on Streptococcus mutans. The aqueous extract of the plant had no effect on bacterial growth. Conclusion: On the basis of the current results, the alcoholic extract of Daphne mucronata might be promising as a natural antimicrobial agent and as a medicine for the prevention and control of the growth of Streptococcus mutans.
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Affiliation(s)
| | | | - Hassan Mahmoudi
- Microbiology Department, Hamadan University of Medical Sciences, Hamadān, Iran,*To whom correspondence should be addressed: Hassan Mahmoudi, Microbiology Department, Hamadan University of Medical Sciences, Hamadān, Iran, Phone: +98-9189539458, E-mail:
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Taguchi K, Yamamoto M. The KEAP1-NRF2 System in Cancer. Front Oncol 2017; 7:85. [PMID: 28523248 PMCID: PMC5415577 DOI: 10.3389/fonc.2017.00085] [Citation(s) in RCA: 348] [Impact Index Per Article: 49.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 04/18/2017] [Indexed: 12/30/2022] Open
Abstract
Cancer cells first adapt to the microenvironment and then propagate. Mutations in tumor suppressor genes or oncogenes are frequently found in cancer cells. Comprehensive genomic analyses have identified somatic mutations and other alterations in the KEAP1 or NRF2 genes and in well-known tumor suppressor genes or oncogenes, such as TP53, CDKN2A, PTEN, and PIK3CA, in various types of cancer. Aberrant NRF2 activation in cancer cells occurs through somatic mutations in the KEAP1 or NRF2 gene as well as through other mechanisms that disrupt the binding of KEAP1 to NRF2. Unregulated NRF2 confers on cancer cells high-level resistance to anticancer drugs and reactive oxygen species (ROS) and directs cancer cells toward metabolic reprogramming. Therefore, NRF2 has been studied as a therapeutic target molecule in cancer. Two strategies have been used to target NRF2 via therapeutic drugs: inhibition of NRF2 and induction of NRF2. NRF2 inhibitors may be effective against NRF2-addicted cancer cells in which NRF2 is aberrantly activated. These inhibitors have not yet been established as NRF2-targeted anticancer drugs for the treatment of human cancers. Diagnosis of NRF2 activation could facilitate the use of NRF2 inhibitors for the treatment of patients with NRF2-addicted cancers. Conversely, NRF2 inducers have been used or are being developed for non-cancer diseases. In addition, NRF2 inducers may be useful for cancer chemotherapy in combination with conventional anticancer agents or even NRF2 inhibitors.
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Affiliation(s)
- Keiko Taguchi
- Department of Medical Biochemistry, Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Masayuki Yamamoto
- Department of Medical Biochemistry, Graduate School of Medicine, Tohoku University, Sendai, Japan
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Kang HB, Lee HR, Jee DJ, Shin SH, Nah SS, Yoon SY, Kim JW. PRDM1, a Tumor-Suppressor Gene, is Induced by Genkwadaphnin in Human Colon Cancer SW620 Cells. J Cell Biochem 2016; 117:172-9. [PMID: 26096175 DOI: 10.1002/jcb.25262] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 06/16/2015] [Indexed: 12/30/2022]
Abstract
Genkwadaphnin (GD-1) is isolated from the flower buds of Daphne genkwa Siebold et Zuccarini (Thymelaeaceae), and it has been used as a traditional Korean and Chinese medicine. In this study, the authors observe that GD-1 inhibits the growth of the colon cancer cell line, SW620, through the up-regulation of p21 expression in a PRDM1-dependent manner. After treatment with GD-1, the transcriptional repressor PRDM1 is prominently induced in SW620 cells. Furthermore, GD-1 induce the phosphorylation of PKD1 and MEK and subsequently provide PRDM1 enhancement, resulting in the suppression of c-Myc expression and the up-regulation of p21. PKD1 knockdown using siRNA abrogates PRDM1 expression by GD-1 and subsequently disrupts the regulation of c-Myc and p21 expression. Treating SW620 cells with GD-1 inhibits cell-cycle progression and is characterized by the down-regulation of c-Myc followed by the up-regulation of p21 expression. The up-regulation of p21 by GD-1 induces the growth arrest of the SW620 colon cancer cell line. Based on these data, the authors propose that GD-1 has tumor-suppressor activity that may contribute to the anti-tumor effects of PRDM1 in colon cancer.
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Affiliation(s)
- Ho-Bum Kang
- Biomedical Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Ha-Reum Lee
- Biomedical Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Da Jung Jee
- Biomedical Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Su-Hyun Shin
- Biomedical Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Soonchunhyang Medical Science Research Institute, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Seong-Su Nah
- Head of Rheumatology, Department of Internal Medicine, Soonchunhyang University Choenan hospital College of Medicine, Choenan, 330-721, Republic of Korea
| | - Sun Young Yoon
- ENZYCHEM Lifesciences, 103-6, KAIST-ICC F741, Munjidong, Daejeon, 305-732, Republic of Korea
| | - Jae Wha Kim
- Biomedical Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
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Jiang HL, Wang R, Li JY, Shi YP. A new highly oxygenated daphnane diterpene esters from the flower buds ofDaphne genkwa. Nat Prod Res 2015; 29:1878-83. [DOI: 10.1080/14786419.2015.1009459] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Li ZJ, Li XM, Piao YJ, Choi DK, Kim SJ, Kim JW, Sohn KC, Kim CD, Lee JH. Genkwadaphnin induces reactive oxygen species (ROS)-mediated apoptosis of squamous cell carcinoma (SCC) cells. Biochem Biophys Res Commun 2014; 450:1115-9. [DOI: 10.1016/j.bbrc.2014.06.118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 06/24/2014] [Indexed: 11/29/2022]
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Jusković M, Vasiljević P, Manojlović N, Mihailov-Krstev T, Stevanović B. Phytochemical and Antimicrobial Screening of Leaves and Stems of Balkan Endemic SpeciesDaphne MalyanaBlečić. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.5504/bbeq.2012.0007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Xu WC, Shen JG, Jiang JQ. Phytochemical and Biological Studies of the Plants from the Genus Daphne. Chem Biodivers 2011; 8:1215-33. [DOI: 10.1002/cbdv.201000117] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zhang SX, Yang PW, Zhang DC, Dong WQ, Zhang FH, Sun YM. Pharmacokinetics, tissue distribution, and metabolism of novel DNA topoisomerase I inhibitor yuanhuacine in rabbit. Xenobiotica 2009; 39:273-81. [PMID: 19280526 DOI: 10.1080/00498250802715987] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A liquid chromatography/tandem mass spectrometry method was developed and validated for the quantitative determination of yuanhuacine (YHC), a daphne diterpene ortho-ester anticancer agent, and identification of its metabolites. Pharmacokinetic behaviour, tissue distribution, and metabolism were investigated in rabbit. YHC plasma data best fitted to a two-compartment model and were characterized by an elimination half-life t(1/2)(beta) of 11.1 h following intravenous administration. Tissue distribution studies did not identify any tissues having a high affinity for YHC. The main metabolites are proposed to be M392I, M392II, and M390, resulting from the ortho-ester group and aromatic ester bond being cleaved off simultaneously during Phase I metabolism. This investigation contributes to an understanding of the metabolism of daphne diterpene ortho-esters.
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Affiliation(s)
- S X Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, P. R. China.
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Zhang S, Gao X, Shen K, Yang P, Ju X. Evaluation of poly(d,l-lactide-co-glycolide) microspheres for the lung-targeting of yuanhuacine, a novel DNA topoisomerase I inhibitor. J Drug Target 2009; 17:286-93. [DOI: 10.1080/10611860902737912] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Affiliation(s)
- Shang-Gao Liao
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, P. R. China
| | - Hua-Dong Chen
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, P. R. China
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai, 201203, P. R. China
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Zhang S, Zhang F, Li X, Dong W, Wen L, Wang S. Evaluation of Daphne genkwa diterpenes: fingerprint and quantitative analysis by high performance liquid chromatography. PHYTOCHEMICAL ANALYSIS : PCA 2007; 18:91-7. [PMID: 17439007 DOI: 10.1002/pca.953] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Daphne genkwa contains a novel class of anticancer diterpene esters that inhibit DNA topoisomerase I. Fingerprint and quantitative analysis by HPLC were performed in order to characterise and evaluate D. genkwa. A standard fingerprint of Daphne diterpene esters from the root extract was first established by HPLC-UV, and the major peaks in the fingerprint profile were preliminarily determined using HPLC-MS. The principal Daphne diterpene esters, yuanhuacine (1), yuanhuadine (2), yuanhuajine (3) and yuanhuagine (4), were isolated and identified using a combination of UV, IR, MS, 1H-NMR and 13C-NMR spectral data. Quantitative analysis indicated that 1 was the principal component in the root, and that 2 was the major component in the buds. The average extraction rates of 1 and 2 were 0.0151 and 0.0033% (n=10) from the root, respectively, and 0.0020 and 0.0078% (n=3) from the buds, respectively.
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Affiliation(s)
- Shixuan Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, People's Republic of China.
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Zhang S, Li X, Zhang F, Yang P, Gao X, Song Q. Preparation of yuanhuacine and relative daphne diterpene esters from Daphne genkwa and structure–activity relationship of potent inhibitory activity against DNA topoisomerase I. Bioorg Med Chem 2006; 14:3888-95. [PMID: 16488610 DOI: 10.1016/j.bmc.2006.01.055] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Revised: 01/14/2006] [Accepted: 01/18/2006] [Indexed: 11/16/2022]
Abstract
Two new daphne diterpene esters Yuanhuajine (2) and Yuanhuagine (4), together with three known daphne diterpene esters yuanhuacine (1), yuanhuadine (3), and yuanhuapine (5), were isolated and identified from Daphne genkwa, a traditional Chinese medicine. Their structures were elucidated by a combination of UV, IR, MS and NMR ((1)H NMR, (13)C NMR, HSQC, and HMBC) spectra. In order to explore the structure-activity relationship, three compounds 6, 7, and 8 were prepared as three derivatives of 1. Inhibitory activities against DNA topoisomerase I (topo I) were assessed for the compounds 1-8. These compounds, except for 8, exhibited potent inhibitory activities against DNA topo I at IC(50) levels of 11.1-53.4 microM and they are new type of topo I inhibitors bearing different structures compared with the known topo I inhibitors. The agarose-gel electrophoresis experiments showed that the orthoester group of daphne diterpene esters was necessary for the inhibitory activity against DNA topo I, and the inhibition against DNA topo I is probably one of the anti-tumor mechanisms of daphne diterpene esters.
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Affiliation(s)
- Shixuan Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Zhongshan Road 158-90, Dalian 116012, China.
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Yazdanparast R, Moosavi MA. Daphnane-type diterpene esters as powerful agents for the treatment of leukemia. Med Hypotheses 2006; 67:1472-3. [PMID: 16934949 DOI: 10.1016/j.mehy.2006.06.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2006] [Accepted: 06/21/2006] [Indexed: 11/15/2022]
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Moosavi MA, Yazdanparast R, Sanati MH, Nejad AS. 3-Hydrogenkwadaphnin targets inosine 5'-monophosphate dehydrogenase and triggers post-G1 arrest apoptosis in human leukemia cell lines. Int J Biochem Cell Biol 2005; 37:2366-79. [PMID: 16084123 DOI: 10.1016/j.biocel.2005.04.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2005] [Revised: 04/10/2005] [Accepted: 04/26/2005] [Indexed: 12/01/2022]
Abstract
3-Hydrogenkwadaphnin (3-HK) is a recently characterized daphnane-type compound isolated from Dendrostellera lessertii with high anti-tumor activity in animal models. Herein, we report on time- and dose-dependent effects of this compound on growth, differentiation, IMPDH inhibition, cell cycle and apoptosis of a panel of human leukemia cell lines (HL-60, K562 and Molt4). The drug decreased the growth of leukemia cells in less than 24 h of treatment. However, longer exposure times and/or higher concentrations were required to promote cell apoptosis. Cell cycle analysis revealed the accumulation of cells in their G1 phase as early as 12 h after drug exposure but sub-G1 population was recorded after 24 h. Occurrence of apoptosis was constantly accompanied by morphological (staining with DNA-binding dyes) and biochemical (DNA fragments) variations among drug-treated cells. Despite these observations, non-activated normal human PBL were insensitive to the drug action. In addition, treatment of PHA-activated PBL, K562, Molt4 and HL-60 cells with a single dose of the drug for 24 h led to the inhibition of IMPDH activity by almost 37, 38, 44 and 50%, respectively. In contrast, no difference in IMPDH activities were seen between normal PBL and the drug treated PBL cells. Restoration of the depleted GTP concentration by exogenous addition of guanosine (25-50 microM) reversed the drug effects on cell growth, DNA fragmentation and apoptosis. Furthermore, the drug effects were potentiated by exogenous addition of hypoxanthine to the drug-treated cells. Reduction of the drug potency on the non-proliferative (retinoic acid treated) HL-60 cells by almost 40%, compared to the proliferative cells, clearly shows type II IMPDH as one of the main targets of the drug. These results suggest that 3-HK may be a powerful candidate for treatment of leukemia.
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Affiliation(s)
- Mohammad Amin Moosavi
- Institute of Biochemistry and Biophysics, P.O. Box 13145-1384, University of Tehran, Tehran, Iran
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Moosavi MA, Yazdanparast R, Sanati MH. The Cytotoxic and Anti-proliferative Effects of 3-Hydrogenkwadaphnin in K562 and Jurkat Cells Is Reduced by Guanosine. BMB Rep 2005; 38:391-8. [PMID: 16053705 DOI: 10.5483/bmbrep.2005.38.4.391] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
3-hydrogenwadaphnin (3-HK) is a new daphnane-type diterpene ester isolated from Dendrostellera lessertii with strong anti-tumoral activity in animal models and in cultures. Here, prolonged effects of this new agent on proliferation and viability of several different cancerous cell lines were evaluated. Using [(3)H]thymidine incorporation, it was found that the drug inhibited cell proliferation and induced G1/S cell cycle arrest in leukemic cells 24 h after a single dose treatment. The cell viability of Jurkat cells was also decreased by almost 10 %, 31 % and 40 % after a single dose treatment (7.5 nM) at 24, 48 and 72 h, respectively. The drug-treated cells were stained with acridine orange/ ethidium bromide to document the chromatin condensation and DNA fragmentation. These observations were further confirmed by detection of DNA laddering pattern in the agarose gel electrophoresis of the extracted DNA from the treated cells. Treatment of K562 cells with the drug at 7.5, 15 and 30 nM caused apoptosis in 25 %, 45 % and 65 % of the cells, respectively. Exogenous addition of 25-50 microM guanosine and/or deoxyguanosine to the cell culture of the drug-treated cells restored DNA synthesis, released cell arrest at G1/S checkpoint and decreased the apoptotic cell death caused by the drug. These observations were not made using adenosine. However, the drug effects on K562 cells were potentiated by hypoxanthine. Based on these observations, perturbation of GTP metabolism is considered as one of the main reasons for apoptotic cell death by 3-HK.
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Affiliation(s)
- Mohammad Amin Moosavi
- Institute of Biochemistry and Biophysics, P. O. Box. 13145-1384, University of Tehran, Tehran, Iran
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Lee KH. Research and future trends in the pharmaceutical development of medicinal herbs from Chinese medicine. Public Health Nutr 2000; 3:515-22. [PMID: 11276300 DOI: 10.1017/s1368980000000604] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Issues concerning the past and future development of medicinal herbs from Chinese medicine (CM) are addressed in this paper. In the Western world, medicinal herbs are becoming increasingly popular and important in the public and scientific communities. In contrast to their regulated status in China and other countries, herbal medicines are regarded as dietary supplements in the US. Accordingly, research must continue worldwide to identify and improve the efficacy of the active principals of herbs both singly and in combination -- from active ingredients, active fractions, and active herbal formulations. While Western medicine currently employs pure, single compounds, either natural or synthetic, CM has long used multiple combinations of compounds in the form of processed natural products, primarily medicinal herbs, to treat and relieve the symptoms of many different human diseases. CM may have fewer and less severe side effects than single pure drugs, making CM especially attractive to the consumer. In effect, CM's focus on combination therapy does serve both ancient and modern theories. However, research using modern analytical and chemical techniques is needed to ensure efficacy and safety, to provide qualitative and quantitative analyses for dietary supplements, and to develop new, effective and safe world-class drugs. Drug design is an iterative process. Bioactivity-directed fractionation and isolation identify active natural compounds from single herbs or formulations. These lead structures can be chemically modified and improved through knowledge of structure--activity relationship, mechanism of action, drug metabolism, molecular modelling and combinatorial chemistry studies. Finally, efficacy and toxicity determination as well as clinical trials can contribute to the generation of new drugs from CM. To continue the legacy of CM, as well as the worldwide uses of other medicinal herbs, continued investigation of active formulations, bioactive fractions, and isolated compounds is critical to drug development in the 21st century.
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Affiliation(s)
- K H Lee
- Natural Products Laboratory, School of Pharmacy, University of North Carolina at Chapel Hill, 27599-7360, USA.
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