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Morshed MN, Akter R, Karim MR, Iqbal S, Kang SC, Yang DC. Bioconversion, Pharmacokinetics, and Therapeutic Mechanisms of Ginsenoside Compound K and Its Analogues for Treating Metabolic Diseases. Curr Issues Mol Biol 2024; 46:2320-2342. [PMID: 38534764 DOI: 10.3390/cimb46030148] [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: 02/14/2024] [Revised: 03/01/2024] [Accepted: 03/06/2024] [Indexed: 03/28/2024] Open
Abstract
Rare ginsenoside compound K (CK) is an intestinal microbial metabolite with a low natural abundance that is primarily produced by physicochemical processing, side chain modification, or metabolic transformation in the gut. Moreover, CK exhibits potent biological activity compared to primary ginsenosides, which has raised concerns in the field of ginseng research and development, as well as ginsenoside-related dietary supplements and natural products. Ginsenosides Rb1, Rb2, and Rc are generally used as a substrate to generate CK via several bioconversion processes. Current research shows that CK has a wide range of pharmacological actions, including boosting osteogenesis, lipid and glucose metabolism, lipid oxidation, insulin resistance, and anti-inflammatory and anti-apoptosis properties. Further research on the bioavailability and toxicology of CK can advance its medicinal application. The purpose of this review is to lay the groundwork for future clinical studies and the development of CK as a therapy for metabolic disorders. Furthermore, the toxicology and pharmacology of CK are investigated as well in this review. The findings indicate that CK primarily modulates signaling pathways associated with AMPK, SIRT1, PPARs, WNTs, and NF-kB. It also demonstrates a positive therapeutic effect of CK on non-alcoholic fatty liver disease (NAFLD), obesity, hyperlipidemia, diabetes, and its complications, as well as osteoporosis. Additionally, the analogues of CK showed more bioavailability, less toxicity, and more efficacy against disease states. Enhancing bioavailability and regulating hazardous variables are crucial for its use in clinical trials.
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Affiliation(s)
- Md Niaj Morshed
- Department of Biopharmaceutical Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Republic of Korea
| | - Reshmi Akter
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin-si 17104, Republic of Korea
| | - Md Rezaul Karim
- Department of Biopharmaceutical Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Republic of Korea
| | - Safia Iqbal
- Department of Biopharmaceutical Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Republic of Korea
| | - Se Chan Kang
- Department of Biopharmaceutical Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Republic of Korea
| | - Deok Chun Yang
- Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin-si 17104, Republic of Korea
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Zhang KX, Zhu Y, Song SX, Bu QY, You XY, Zou H, Zhao GP. Ginsenoside Rb1, Compound K and 20(S)-Protopanaxadiol Attenuate High-Fat Diet-Induced Hyperlipidemia in Rats via Modulation of Gut Microbiota and Bile Acid Metabolism. Molecules 2024; 29:1108. [PMID: 38474620 DOI: 10.3390/molecules29051108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 02/25/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
Hyperlipidemia, characterized by elevated serum lipid concentrations resulting from lipid metabolism dysfunction, represents a prevalent global health concern. Ginsenoside Rb1, compound K (CK), and 20(S)-protopanaxadiol (PPD), bioactive constituents derived from Panax ginseng, have shown promise in mitigating lipid metabolism disorders. However, the comparative efficacy and underlying mechanisms of these compounds in hyperlipidemia prevention remain inadequately explored. This study investigates the impact of ginsenoside Rb1, CK, and PPD supplementation on hyperlipidemia in rats induced by a high-fat diet. Our findings demonstrate that ginsenoside Rb1 significantly decreased body weight and body weight gain, ameliorated hepatic steatosis, and improved dyslipidemia in HFD-fed rats, outperforming CK and PPD. Moreover, ginsenoside Rb1, CK, and PPD distinctly modified gut microbiota composition and function. Ginsenoside Rb1 increased the relative abundance of Blautia and Eubacterium, while PPD elevated Akkermansia levels. Both CK and PPD increased Prevotella and Bacteroides, whereas Clostridium-sensu-stricto and Lactobacillus were reduced following treatment with all three compounds. Notably, only ginsenoside Rb1 enhanced lipid metabolism by modulating the PPARγ/ACC/FAS signaling pathway and promoting fatty acid β-oxidation. Additionally, all three ginsenosides markedly improved bile acid enterohepatic circulation via the FXR/CYP7A1 pathway, reducing hepatic and serum total bile acids and modulating bile acid pool composition by decreasing primary/unconjugated bile acids (CA, CDCA, and β-MCA) and increasing conjugated bile acids (TCDCA, GCDCA, GDCA, and TUDCA), correlated with gut microbiota changes. In conclusion, our results suggest that ginsenoside Rb1, CK, and PPD supplementation offer promising prebiotic interventions for managing HFD-induced hyperlipidemia in rats, with ginsenoside Rb1 demonstrating superior efficacy.
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Affiliation(s)
- Kang-Xi Zhang
- Henan Engineering Research Center of Food Microbiology, College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Yue Zhu
- Master Lab for Innovative Application of Nature Products, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Shu-Xia Song
- Henan Engineering Research Center of Food Microbiology, College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
- Master Lab for Innovative Application of Nature Products, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Qing-Yun Bu
- Henan Engineering Research Center of Food Microbiology, College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
- Master Lab for Innovative Application of Nature Products, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- Haihe Laboratory of Synthetic Biology, Tianjin 300308, China
| | - Xiao-Yan You
- Henan Engineering Research Center of Food Microbiology, College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
- Master Lab for Innovative Application of Nature Products, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Hong Zou
- CAS Engineering Laboratory for Nutrition, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai 200031, China
| | - Guo-Ping Zhao
- Master Lab for Innovative Application of Nature Products, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- CAS Engineering Laboratory for Nutrition, Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai 200031, China
- CAS-Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
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Shin MB, Kim SA, Lee S, Shim WS, Lee KT, Lee SK, Yim SV, Kim BH. Pharmacokinetic Comparison of Ginsenosides between Fermented and Non-Fermented Red Ginseng in Healthy Volunteers. Pharmaceutics 2022; 14:pharmaceutics14122807. [PMID: 36559300 PMCID: PMC9784495 DOI: 10.3390/pharmaceutics14122807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/04/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
Fermentation of red ginseng (RG) produces fermented red ginseng (FRG), thereby increasing the relative amount of downstream ginsenosides, including compound Y (CY), F2, Rh2, compound K (CK), compound O, protopanaxadiol (PPD), and protopanaxatriol (PPT). These downstream ginsenosides have beneficial pharmacological effects, and are easily absorbed by the human body. Based on these expectations, a randomized, single-dose, two-period, crossover clinical trial was planned to compare the pharmacokinetic characteristics of seven types (Rb1, CY, F2, CK, Rh2, PPD, and PPT) of ginsenoside components after FRG and RG administration. The safety and tolerability profiles were assessed in this clinical trial. Sixteen healthy Korean male subjects were administered 6 g of FRG or RG. All ginsenosides except Rb1 showed higher systemic exposure after FRG administration than after RG administration, based on comparisons of ginsenoside Cmax and area under the concentration-time curve (AUC) between FRG and RG. CK, the main ginsenoside component produced during the fermentation process, had 69.23/74.53-fold higher Cmax/AUClast after administration of FRG than RG, and Rh2 had 20.27/18.47-fold higher Cmax/AUClast after administration of FRG than RG. In addition, CY and F2 were detected in FRG; however, all plasma concentrations of CY and F2, except in one subject, were below the lower limit of quantification in RG. There were no clinically significant findings with respect to clinical laboratory tests, blood pressures, or adverse events. Therefore, regular administration of FRG may exert better pharmacological effects than RG.
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Affiliation(s)
- Myeong-Bae Shin
- Department of Regulatory Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sung-Ah Kim
- Department of Clinical Pharmacology and Therapeutics, Kyung Hee University Medical Center, Seoul 02447, Republic of Korea
| | - Sooyoung Lee
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Wang-Seob Shim
- Kyung Hee Drug Analysis Center, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung-Tae Lee
- Kyung Hee Drug Analysis Center, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seung-Kwon Lee
- Ginseng Biotech Research Team, ILHWA Co., Ltd., Guri-si 11933, Republic of Korea
| | - Sung-Vin Yim
- Department of Clinical Pharmacology and Therapeutics, Kyung Hee University Medical Center, Seoul 02447, Republic of Korea
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Bo-Hyung Kim
- Department of Regulatory Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Clinical Pharmacology and Therapeutics, Kyung Hee University Medical Center, Seoul 02447, Republic of Korea
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- East-West Medical Research Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Correspondence:
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Chopra P, Chhillar H, Kim YJ, Jo IH, Kim ST, Gupta R. Phytochemistry of ginsenosides: Recent advancements and emerging roles. Crit Rev Food Sci Nutr 2021; 63:613-640. [PMID: 34278879 DOI: 10.1080/10408398.2021.1952159] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Ginsenosides, a group of tetracyclic saponins, accounts for the nutraceutical and pharmaceutical relevance of the ginseng (Panax sp.) herb. Owing to the associated therapeutic potential of ginsenosides, their demand has been increased significantly in the last two decades. However, a slow growth cycle, low seed production, and long generation time of ginseng have created a gap between the demand and supply of ginsenosides. The biosynthesis of ginsenosides involves an intricate network of pathways with multiple oxidation and glycosylation reactions. However, the exact functions of some of the associated genes/proteins are still not completely deciphered. Moreover, ginsenoside estimation and extraction using analytical techniques are not feasible with high efficiency. The present review is a step forward in recapitulating the comprehensive aspects of ginsenosides including their distribution, structural diversity, biotransformation, and functional attributes in both plants and animals including humans. Moreover, ginsenoside biosynthesis in the potential plant sources and their metabolism in the human body along with major regulators and stimulators affecting ginsenoside biosynthesis have also been discussed. Furthermore, this review consolidates biotechnological interventions to enhance the biosynthesis of ginsenosides in their potential sources and advancements in the development of synthetic biosystems for efficient ginsenoside biosynthesis to meet their rising industrial demands.
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Affiliation(s)
- Priyanka Chopra
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Himanshu Chhillar
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Yu-Jin Kim
- Department of Life Science and Environmental Biochemistry, College of Natural Resources and Life Sciences, Pusan National University, Miryang, South Korea
| | - Ick Hyun Jo
- Department of Herbal Crop Research, Rural Development Administration, Eumseong, South Korea
| | - Sun Tae Kim
- Department of Plant Bioscience, College of Natural Resources and Life Sciences, Pusan National University, Miryang, South Korea
| | - Ravi Gupta
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India.,Department of Forestry, Environment, and Systems, College of Science and Technology, Kookmin University, Seoul, South Korea
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Qi W, Yan X, Xu X, Song B, Sun L, Zhao D, Sun L. The effects of cytarabine combined with ginsenoside compound K synergistically induce DNA damage in acute myeloid leukemia cells. Biomed Pharmacother 2020; 132:110812. [PMID: 33059263 DOI: 10.1016/j.biopha.2020.110812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/13/2020] [Accepted: 09/25/2020] [Indexed: 12/13/2022] Open
Abstract
AML is a kind of hematological malignant tumor that urgently requires different treatment options in order to increase the cure rate and survival rate. Cytarabine (ara-C) is currently the main drug used to treat AML patients and is usually combined with different chemotherapeutic agents. However, due to resistance to ara-C, a new combination is needed to reduce ara-C resistance and improve treatment outcome. As is known to all, ginseng is a traditional Chinese herb; compound K is the principal metabolic product of ginsenoside which also has anti-cancer activity in some cancer cells, while the mechanism is unclear. In our previous study, we found that compound K inhibited AML cell viability and induced apoptosis, and compound K combined with ara-C synergistically induced AML cell proliferation arrest. Thus, we sought to investigate the reason for this by focusing on the mitochondrial dysfunction and DNA damage. In this paper, our results provide a foundation for the clinical evaluation of concomitant administration of compound K and ara-C in order to reduce the resistance to ara-C and improve AML treatment.
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Affiliation(s)
- Wenxiu Qi
- Jilin Provincial Key Laboratory of BioMacromolecules of Chinese Medicine, Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Xiuci Yan
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Xiaohao Xu
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Bailin Song
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Liping Sun
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Daqing Zhao
- Jilin Provincial Key Laboratory of BioMacromolecules of Chinese Medicine, Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Liwei Sun
- Research Center of Traditional Chinese Medicine, the Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin, China; Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Changchun, Jilin, China.
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Kim MS, Jeon SJ, Youn SJ, Lee H, Park YJ, Kim DO, Kim BY, Kim W, Baik MY. Enhancement of Minor Ginsenosides Contents and Antioxidant Capacity of American and Canadian Ginsengs ( Panax quinquefolius) by Puffing. Antioxidants (Basel) 2019; 8:antiox8110527. [PMID: 31694256 PMCID: PMC6912307 DOI: 10.3390/antiox8110527] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/02/2019] [Accepted: 11/04/2019] [Indexed: 01/04/2023] Open
Abstract
The effects of puffing on ginsenosides content and antioxidant activities of American and Canadian ginsengs, Panax quinquefolius, were investigated. American and Canadian ginsengs puffed at different pressures were extracted using 70% ethanol. Puffing formed a porous structure, inducing the efficient elution of internal compounds that resulted in significant increases in extraction yields and crude saponin content. The content of minor ginsenosides (Rg2, Rg3, compound K) increased with increasing puffing pressure, whereas that of major ginsenosides (Rg1, Re, Rf, Rb1, Rc, Rd) decreased, possibly due to their deglycosylation and pyrolysis. Furthermore, 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging activity, total phenolic content, total flavonoid content, amount of Maillard reaction products, and acidic polysaccharides content increased with increasing puffing pressure, but 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity did not. There was no substantial difference in the results between puffed American and Canadian ginsengs. Consequently, these results suggest that puffing can be a promising novel technology for processing P. quinquefolius to achieve higher levels of minor ginsenosides and obtain value-added products.
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Affiliation(s)
- Min-Soo Kim
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 17104, Korea
| | - Sung-Joon Jeon
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 17104, Korea
| | - So Jung Youn
- Department of Food Engineering, Dankook University, Cheonan 31116, Korea
| | - Hyungjae Lee
- Department of Food Engineering, Dankook University, Cheonan 31116, Korea
| | - Young-Joon Park
- Department of Science in Korean Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Dae-Ok Kim
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 17104, Korea
| | - Byung-Yong Kim
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 17104, Korea
| | - Wooki Kim
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 17104, Korea
- Correspondence: (W.K.); (M.-Y.B.); Tel.: +82-31-201-3482 (W.K.); +82-31-201-2625 (M.-Y.B.)
| | - Moo-Yeol Baik
- Department of Food Science and Biotechnology, Kyung Hee University, Yongin 17104, Korea
- Correspondence: (W.K.); (M.-Y.B.); Tel.: +82-31-201-3482 (W.K.); +82-31-201-2625 (M.-Y.B.)
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Enzymatically Synthesized Ginsenoside Exhibits Antiproliferative Activity in Various Cancer Cell Lines. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9050893] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A glycoside derivative of compound K (CK) was synthesized by using a glycosyltransferase, and its biological activity was tested against various cancer-cell lines. A regiospecific, β-1,4-galactosyltransferase (LgtB) converted 100% of 0.5 mmol CK into a galactosylated product in 3 h. The structure of the synthesized derivative was revealed with high performance liquid chromatography, mass spectroscopy, as well as nuclear magnetic resonance analyses, and it was recognized as 20-O-β-D-lactopyranosyl-20(S)-protopanaxadiol (CKGal). Out of the four cancer-cell lines tested (gastric carcinoma (AGS), skin melanoma (B16F10), cervical carcinoma (HeLa), and brain carcinoma (U87MG)), CKGal showed the best cytotoxic ability against B16F10 and AGS when compared to other ginsenosides like compound K (20-O-β-D-glucopyranosyl-20(S)-protopanaxadiol), Rh2 (3-O-β-D-glucopyranosyl-20(S)-protopanaxadiol), and F12 (3-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxadiol). Thus, the synthesized derivative (CKGal) is a pharmacologically active ginsenoside.
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Jin X, Yang Q, Cai N. Preparation of ginsenoside compound-K mixed micelles with improved retention and antitumor efficacy. Int J Nanomedicine 2018; 13:3827-3838. [PMID: 30013338 PMCID: PMC6039058 DOI: 10.2147/ijn.s167529] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Introduction Ginsenoside compound K (CK) has effects on cell-cycle regulation, tumor growth inhibition, and apoptosis induction. However, it has limited applications in clinical settings because of its low solubility and poor absorption. Methods To overcome these limitations, we aimed to develop a mixed micellar system composed of phosphatidylcholine (PC) and 1,2-distearoyl-sn-glycero-3-phosphoethanolamine polyethylene glycol 2000 (DSPE PEG 2000; DP). CK encapsulated in PC/DP mixed micelles had enhanced solubility, permeability, and retention effects. Results Compared to free CK, the CK PC/DP micellar system exhibited improved anticancer effects in vitro, including cell-cycle arrest, apoptosis, and anti-invasion in human lung carcinoma A549 cells. The significant proapoptotic effect was reflected by increased chromosomal condensation, annexin V/propidium iodide staining, and related protein expression. In vitro cellular uptake and optical mouse imaging in vivo suggested that the improved antitumor effect was caused primarily by enhanced uptake and tumor targeting. Furthermore, an in vivo antitumor efficacy study indicated that the CK mixed micelles significantly inhibited tumor growth, thereby decreasing tumor volume at the end of the experiment as compared with that in the control mice. Histological analysis confirmed the antitumor effect with low toxicity. Conclusion The PC/DP micellar system was an effective drug delivery system for CK in tumor therapy.
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Affiliation(s)
- Xin Jin
- Department of Hospital Pharmacy, Suqian Branch Jiangsu Province Hospital, Suqian 223800, China,
| | - Qing Yang
- Department of Hospital Pharmacy, Suqian Branch Jiangsu Province Hospital, Suqian 223800, China,
| | - Ning Cai
- Department of Hospital Pharmacy, Suqian Branch Jiangsu Province Hospital, Suqian 223800, China,
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Kim DH. Gut microbiota-mediated pharmacokinetics of ginseng saponins. J Ginseng Res 2018; 42:255-263. [PMID: 29983606 PMCID: PMC6026358 DOI: 10.1016/j.jgr.2017.04.011] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 02/26/2017] [Accepted: 04/18/2017] [Indexed: 11/09/2022] Open
Abstract
Orally administered ginsengs come in contact with the gut microbiota, and their hydrophilic constituents, such as ginsenosides, are metabolized to hydrophobic compounds by gastric juice and gut microbiota: protopanxadiol-type ginsenosides are mainly transformed into compound K and ginsenoside Rh2; protopanaxatriol-type ginsenosides to ginsenoside Rh1 and protopanaxatriol, and ocotillol-type ginsenosides to ocotillol. Although this metabolizing activity varies between individuals, the metabolism of ginsenosides to compound K by gut microbiota in individuals treated with ginseng is proportional to the area under the blood concentration curve for compound K in their blood samples. These metabolites such as compound K exhibit potent pharmacological effects, such as antitumor, anti-inflammatory, antidiabetic, antiallergic, and neuroprotective effects compared with the parent ginsenosides, such as Rb1, Rb2, and Re. Therefore, to monitor the potent pharmacological effects of ginseng, a novel probiotic fermentation technology has been developed to produce absorbable and bioactive metabolites. Based on these findings, it is concluded that gut microbiota play an important role in the pharmacological action of orally administered ginseng, and probiotics that can replace gut microbiota can be used in the development of beneficial and bioactive ginsengs.
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Affiliation(s)
- Dong-Hyun Kim
- Department of Life and Nanopharmaceutical Sciences and Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
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Hwang YC, Oh DH, Choi MC, Lee SY, Ahn KJ, Chung HY, Lim SJ, Chung SH, Jeong IK. Compound K attenuates glucose intolerance and hepatic steatosis through AMPK-dependent pathways in type 2 diabetic OLETF rats. Korean J Intern Med 2018; 33:347-355. [PMID: 28142230 PMCID: PMC5840580 DOI: 10.3904/kjim.2015.208] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 07/09/2015] [Accepted: 08/23/2015] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND/AIMS Non-alcoholic fatty liver disease is associated with insulin resistance. Compound K (CK) is the final metabolite of panaxadiol ginsenosides that have been shown to exert antidiabetic effects. However, the molecular mechanism of the antidiabetic effects in the liver have not been elucidated; further, whether CK has beneficial effects in hepatosteatosis remains unclear. Therefore, we evaluated the effect of CK on hepatosteatosis as well as its mechanism in high-fat diet (HFD)-fed type 2 diabetic Otsuka Long-Evans Tokushima Fatty (OLETF) rats. METHODS Twenty-four-week-old male OLETF rats were assigned to four groups: control (saline), CK 10 mg/kg, CK 25 mg/kg, or metformin 300 mg/kg (positive control); all treatments were administered orally for 12 weeks. RESULTS Fasting glucose levels of the CK25 group were significantly lower than those of the control group during the 12 weeks. The results of the oral glucose tolerance test showed that both the glucose concentration after glucose loading and the fasting insulin levels of the CK25 group were significantly lower than those of the control. Hepatosteatosis was significantly improved by CK25. CK25 and metformin significantly increased the phosphorylation of hepatic adenosine monophosphate-activated protein kinase (AMPK). CK25 significantly inhibited the expression of sterol regulatory element-binding protein-1c and fatty acid synthase, while upregulating that of peroxisome proliferator-activated receptor-α and carnitine palmitoyltransferase-1. CONCLUSIONS CK improved glucose intolerance and hepatosteatosis in HFD-fed OLETF rats through AMPK activation, which has dual mode of action that involves decreasing the synthesis of fatty acids and increasing fatty acid oxidation.
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Affiliation(s)
- Yoo-Cheol Hwang
- Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Korea
| | - Da-Hee Oh
- Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Korea
| | - Moon Chan Choi
- Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Korea
| | - Sang Yeoul Lee
- Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Korea
| | - Kyu-Jeong Ahn
- Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Korea
| | - Ho-Yeon Chung
- Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Korea
| | - Sung-Jig Lim
- Department of Pathology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Sung Hyun Chung
- Department of Pharmacology and Clinical Pharmacy Laboratory, Kyung Hee University College of Pharmacy, Seoul, Korea
| | - In-Kyung Jeong
- Department of Endocrinology and Metabolism, Kyung Hee University School of Medicine, Seoul, Korea
- Correspondence to In-Kyung Jeong, M.D. Department of Endocrinology and Metabolism, Kyung Hee University Hospital at Gangdong, 892 Dongnam-ro, Gangdong-gu, Seoul 05278, Korea Tel: +82-2-440-6126 Fax: +82-2-440-6799 E-mail:
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Characterization, Molecular Docking, and In Vitro Dissolution Studies of Solid Dispersions of 20(S)-Protopanaxadiol. Molecules 2017; 22:molecules22020274. [PMID: 28208662 PMCID: PMC6155859 DOI: 10.3390/molecules22020274] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 01/23/2017] [Accepted: 02/06/2017] [Indexed: 11/17/2022] Open
Abstract
In this study, we prepared solid dispersions (SDs) of 20(S)-protopanaxadiol (PPD) using a melting-solvent method with different polymers, in order to improve the solubility and dissolution performance of drugs with poor water solubility. The SDs were characterized via differential scanning calorimetry (DSC), powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and molecular docking and dynamics study. DSC and PXRD results indicated that PPD crystallinity in SDs was significantly reduced, and that the majority of PPD is amorphous. No interaction was observed between PPD and polymers on FTIR and NMR spectra. Molecular docking and dynamic calculations indicated that the PPD molecule localized to the interpolated charged surface, rather than within the amorphous polymer chain network, which might help prevent PPD crystallization, consequently enhancing the PPD dispersion in polymers. An in vitro dissolution study revealed that the SDs considerably improved the PPD dissolution performance in distilled water containing 0.35% Tween-80 (T-80). Furthermore, among three PPD-SDs formulations, Poloxamer188 (F68) was the most effective in improving the PPD solubility and was even superior to the mixed polymers. Therefore, the SD prepared with F68 as a hydrophilic polymer carrier might be a promising strategy for improving solubility and in vitro dissolution performance. F68-based SD, containing PPD with a melting-solvent preparation method, can be used as a promising, nontoxic, quick-release, and effective intermediate for other pharmaceutical formulations, in order to achieve a more effective drug delivery.
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12
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Xu J, Chen HB, Li SL. Understanding the Molecular Mechanisms of the Interplay Between Herbal Medicines and Gut Microbiota. Med Res Rev 2017; 37:1140-1185. [PMID: 28052344 DOI: 10.1002/med.21431] [Citation(s) in RCA: 209] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 10/21/2016] [Accepted: 11/16/2016] [Indexed: 02/06/2023]
Abstract
Herbal medicines (HMs) are much appreciated for their significant contribution to human survival and reproduction by remedial and prophylactic management of diseases. Defining the scientific basis of HMs will substantiate their value and promote their modernization. Ever-increasing evidence suggests that gut microbiota plays a crucial role in HM therapy by complicated interplay with HM components. This interplay includes such activities as: gut microbiota biotransforming HM chemicals into metabolites that harbor different bioavailability and bioactivity/toxicity from their precursors; HM chemicals improving the composition of gut microbiota, consequently ameliorating its dysfunction as well as associated pathological conditions; and gut microbiota mediating the interactions (synergistic and antagonistic) between the multiple chemicals in HMs. More advanced experimental designs are recommended for future study, such as overall chemical characterization of gut microbiota-metabolized HMs, direct microbial analysis of HM-targeted gut microbiota, and precise gut microbiota research model development. The outcomes of such research can further elucidate the interactions between HMs and gut microbiota, thereby opening a new window for defining the scientific basis of HMs and for guiding HM-based drug discovery.
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Affiliation(s)
- Jun Xu
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Hu-Biao Chen
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Song-Lin Li
- Department of Pharmaceutical Analysis, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, P.R. China.,Department of Metabolomics, Jiangsu Province Academy of Traditional Chinese Medicine and Jiangsu Branch of China Academy of Chinese Medical Sciences, Nanjing, 210028, P.R. China
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Yang J, Li X, Sun T, Gao Y, Chen Y, Jin Y, Li Y. Semisynthesis and bioactive evaluation of oxidized products from 20(S)-ginsenoside Rg3, Rh2, protopanaxadiol (PPD) and their 20(R)-epimers as cytotoxic agents. Steroids 2016; 106:26-34. [PMID: 26703442 DOI: 10.1016/j.steroids.2015.12.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/23/2015] [Accepted: 12/14/2015] [Indexed: 11/24/2022]
Abstract
A series of oxidized products have been systematically semisynthesized from 20(S)-ginsenoside Rg3, Rh2, 20(S)-protopanaxadiol (PPD) and their 20(R)-epimers and the majority of these products were evaluated for their cytotoxic activity against HeLa cells and HepG2 cells by MTT assay for the first time. Twenty-two products were obtained and elucidated based on comprehensive (1)H NMR, (13)C NMR, two-dimensional (2D) NMR, and mass spectral data and the results reported in previous literature. All the four ocotillol type saponins (20S,24R(δ86, δ85); 20S,24S(δ87, δ88); 20R,24R(δ86, δ86); 20R,24S(δ86, δ87) were obtained. In addition, eight compounds (3, 8, 9, 10, 15, 16, 19 and 22) with the cyclized side chain were firstly identified. Most of the tested compounds possessed cytotoxicity to a certain degree against the two types of cells which implied these oxidized products could play a certain role on anti-cancer functions of the raw materials in vivo. Meanwhile, the results proved that the configurations at C-20 or C-24 and the number of glycosyl at C-3 have important influence on the cytotoxicity. The products 1, 2, 11-17, 20 and 22 should possess great activities and deserved further investigation as potential cytotoxic agents.
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Affiliation(s)
- Jie Yang
- College of Chemistry, Jilin University, Changchun 130021, PR China
| | - Xuwen Li
- College of Chemistry, Jilin University, Changchun 130021, PR China
| | - Ting Sun
- College of Chemistry, Jilin University, Changchun 130021, PR China
| | - Yan Gao
- College of Life Sciences, Jilin University, Changchun 130012, PR China
| | - Yanxin Chen
- College of Chemistry, Jilin University, Changchun 130021, PR China
| | - Yongri Jin
- College of Chemistry, Jilin University, Changchun 130021, PR China.
| | - Yang Li
- College of Life Sciences, Jilin University, Changchun 130012, PR China.
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14
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Han M, Ma L, Yu X, Li Z, Guo Y, Wang X. A nanoparticulate drug-delivery system for 20(S)-protopanaxadiol: formulation, characterization, increased oral bioavailability and anti-tumor efficacy. Drug Deliv 2015; 23:2410-2418. [PMID: 25564965 DOI: 10.3109/10717544.2014.997843] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
As with many other hydrophobic anticancer agents, 20(S)-protopanaxadiol (PPD) has a very low oral bioavailability. In this study, a precipitation-combined ultrasonication technique was used to prepare PPD nanosuspensions. The mean particle size of the nanosuspensions was approximately 222 ± 12 nm, the drug payload achieved 50% after lyophilization and the maximum PPD concentration can reach 100 mg/ml, which is over 30 000 times the solubility of PPD in aqueous solution (3 μg/ml). After oral administration, the Cmax and AUClast values of PPD nanosuspensions were approximately 3.66-fold and 3.48-fold as those of PPD coarse suspensions, respectively. In contrast to the free drug solution, PPD nanosuspensions showed higher in vitro anti-tumor activity against HepG-2 cells (an IC50 value of 1.40 versus 5.83 μg/ml at 24 h, p < 0.01). The in vivo study in H22-tumor-bearing mice demonstrated that PPD nanosuspensions showed good anti-tumor efficacy with an inhibition rate of 79.47% at 100 mg/kg, while 50 mg/kg of cyclophosphamide was displayed as positive control, and the inhibition rate was 87.81%. Considering the highest drug payload, oral bioavailability reported so far, significant anti-tumor efficacy and excellent safety of encapsulated drugs, PPD nanosuspensions could be used in potential effective strategies for anticancer therapy; further investigation is ongoing.
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Affiliation(s)
- Meihua Han
- a Institute of Medicinal Plant Development , Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing , PR China and
| | - Liqiang Ma
- b School of Pharmacy , Heilongjiang University of Chinese Medicine , Harbin , PR China
| | - Xin Yu
- b School of Pharmacy , Heilongjiang University of Chinese Medicine , Harbin , PR China
| | - Zhitao Li
- b School of Pharmacy , Heilongjiang University of Chinese Medicine , Harbin , PR China
| | - Yifei Guo
- a Institute of Medicinal Plant Development , Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing , PR China and
| | - Xiangtao Wang
- a Institute of Medicinal Plant Development , Chinese Academy of Medical Sciences & Peking Union Medical College , Beijing , PR China and
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15
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Jiang S, Ren D, Li J, Yuan G, Li H, Xu G, Han X, Du P, An L. Effects of compound K on hyperglycemia and insulin resistance in rats with type 2 diabetes mellitus. Fitoterapia 2014; 95:58-64. [DOI: 10.1016/j.fitote.2014.02.017] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 02/24/2014] [Accepted: 02/25/2014] [Indexed: 01/09/2023]
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16
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Park SH, Oh MR, Choi EK, Kim MG, Ha KC, Lee SK, Kim YG, Park BH, Kim DS, Chae SW. An 8-wk, randomized, double-blind, placebo-controlled clinical trial for the antidiabetic effects of hydrolyzed ginseng extract. J Ginseng Res 2014; 38:239-43. [PMID: 25379002 PMCID: PMC4213818 DOI: 10.1016/j.jgr.2014.05.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 04/30/2014] [Accepted: 05/11/2014] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND To investigate the antidiabetic effects of hydrolyzed ginseng extract (HGE) for Korean participants in an 8-wk, randomized, double-blinded, placebo-controlled clinical trial. METHODS Impaired fasting glucose participants [fasting plasma glucose (FPG) ≥ 5.6mM or < 6.9mM] who had not been diagnosed with any disease and met the inclusion criteria were recruited for this study. The 23 participants were randomly divided into either the HGE (n = 12, 960 mg/d) or placebo (n = 11) group. Outcomes included measurements of efficacy (FPG, postprandial glucose, fasting plasma insulin, postprandial insulin, homeostatic model assessment-insulin resistance, and homeostatic model assessment-β) and safety (adverse events, laboratory tests, electrocardiogram, and vital signs). RESULTS After 8 wk of HGE supplementation, FPG and postprandial glucose were significantly decreased in the HGE group compared to the placebo group. No clinically significant changes in any safety parameter were observed. Our study revealed that HGE is a potent antidiabetic agent that does not produce noticeable adverse effects. CONCLUSION HGE supplementation may be effective for treating impaired fasting glucose individuals.
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Affiliation(s)
- Soo-Hyun Park
- Clinical Trial Center for Functional Foods, Chonbuk National University Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, Korea
| | - Mi-Ra Oh
- Clinical Trial Center for Functional Foods, Chonbuk National University Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, Korea
| | - Eun-Kyung Choi
- Clinical Trial Center for Functional Foods, Chonbuk National University Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, Korea
| | - Min-Gul Kim
- Clinical Trial Center, Chonbuk National University Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, Korea
| | - Ki-Chan Ha
- Healthcare Claims and Management Incorporation, 758 Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk, Korea
| | - Seung-Kwon Lee
- Central Research Center, Ilhwa Co., Ltd., 25, Angol-ro, 56Beon-gil, Guri, Gyeonggi, Korea
| | - Young-Gon Kim
- Department of Urology, Chonbuk National University Medical School, 567 Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk, Korea
| | - Byung-Hyun Park
- Department of Biochemistry, Chonbuk National University Medical School, 567 Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk, Korea
| | - Dal-Sik Kim
- Department of Laboratory Medicine, Chonbuk National University Medical School, 567 Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk, Korea
| | - Soo-Wan Chae
- Clinical Trial Center for Functional Foods, Chonbuk National University Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, Korea ; Clinical Trial Center, Chonbuk National University Hospital, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, Korea ; Department of Pharmacology, Chonbuk National University Medical School, 567 Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk, Korea
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17
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Law CKM, Kwok HH, Poon PY, Lau CC, Jiang ZH, Tai WCS, Hsiao WWL, Mak NK, Yue PYK, Wong RNS. Ginsenoside compound K induces apoptosis in nasopharyngeal carcinoma cells via activation of apoptosis-inducing factor. Chin Med 2014; 9:11. [PMID: 24690317 PMCID: PMC4021625 DOI: 10.1186/1749-8546-9-11] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 03/31/2014] [Indexed: 01/08/2023] Open
Abstract
Background Nasopharyngeal carcinoma (NPC) has a high incidence rate in Southern China. Although there are conventional therapies, the side effects and toxicities are not always tolerable for patients. Recently, the tumoricidal effect of ginsenosides on different cancer cells has been studied. This study aims to investigate the anti-cancer effect of ginsenosides on NPC cells and their underlying mechanism. Methods The cytotoxicity of ginsenosides on NPC cell line HK-1 was measured by MTT assay. Apoptosis was detected by propidium iodide staining followed by flow cytometry. A xenograft tumor model was established by injecting nude mice with HK-1 cells. The activation of caspases and apoptosis-inducing factor (AIF) were evaluated by Western blot analysis. Nuclear translocation of AIF was also studied by immunofluorescence staining. Mitochondrial membrane potential was measured by JC-1 dye using flow cytometry. Results Four ginsenosides, 20 (S)-Rh2, compound K (CK), panaxadiol (PD) and protopanaxadiol (PPD), induced apoptotic cell death in HK-1 cells in a concentration-dependent manner. CK inhibited HK-1 xenograft tumor growth most extensively and depleted mitochondrial membrane potential depolarization and induced translocation of AIF from cytoplasm to nucleus in HK-1 cells. In addition, depletion of AIF by siRNA abolished CK-induced HK-1 cell death. Conclusion Ginsenoside CK-induced apoptosis of HK-1 cells was mediated by the mitochondrial pathway and could significantly inhibit tumor growth in vivo.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Patrick Ying-Kit Yue
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China.
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18
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Development of Panax quinquefolius Yaoqu and Panax quinquefolius Sake and determination of ginsenosides Rg1, Rb1, and Re in both samples by HPLC–MS/MS. Eur Food Res Technol 2014. [DOI: 10.1007/s00217-014-2202-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Kim MS, Lee KT, Iseli TJ, Hoy AJ, George J, Grewal T, Roufogalis BD. Compound K modulates fatty acid-induced lipid droplet formation and expression of proteins involved in lipid metabolism in hepatocytes. Liver Int 2013; 33:1583-93. [PMID: 23998390 DOI: 10.1111/liv.12287] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 07/24/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS A key factor in the development of type 2 diabetes and non-alcoholic fatty liver disease (NAFLD) is hepatic steatosis. Incubation of human hepatic cells with free fatty acids (FFAs) causes accumulation of neutral lipids in lipid droplets (LDs) and serves as a model for hepatic steatosis. Ginsenosides, active constituents of ginsengs, have demonstrated beneficial effects in various pharmacological areas, including diabetes, however their effect on lipid accumulation in hepatocytes remains unclear. Here, we examine the effect of compound K (ComK), an active metabolite of ginsenosides, on the regulation of LD formation and on the expression of proteins involved in lipid homeostasis in hepatocytes. METHODS HuH7 cells were pretreated with ComK, followed by lipid loading with FFA. LDs were visualized using Oil Red O staining and immunohistochemistry for the LD-related protein PLIN2. Triglyceride levels were determined in isolated LDs. The expression of proteins involved in lipid homeostasis was examined by Western blotting. RESULTS Treatment with ComK significantly decreased LD formation in FFA-loaded HuH7 cells and increased phosphorylation levels of AMPK, and its substrate ACC. ComK also increased protein expression of peroxisome proliferator-activated receptor-α (PPAR-α) and acyl-CoA oxidase (ACOX1) together with elevated activity of a PPAR-α response element reporter construct. These effects were inhibited by the PPAR-α antagonist MK886. CONCLUSIONS ComK reduced LD formation and TG accumulation in FFA-loaded hepatocytes, in part by up-regulating AMPK activity and PPAR-α related pathways. These results suggest that ComK may have efficacy for the treatment of hepatic steatosis and associated diseases.
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Affiliation(s)
- Moon-Sun Kim
- Faculty of Pharmacy, The University of Sydney, Sydney, NSW, Australia
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20
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Yuan HD, Kim JT, Chung SH. Pectinase-Processed Ginseng Radix (GINST) Ameliorates Hyperglycemia and Hyperlipidemia in High Fat Diet-Fed ICR Mice. Biomol Ther (Seoul) 2013; 20:220-5. [PMID: 24116299 PMCID: PMC3792222 DOI: 10.4062/biomolther.2012.20.2.220] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 11/21/2011] [Accepted: 12/12/2011] [Indexed: 11/21/2022] Open
Abstract
To develop a ginseng product possessing an efficacy for diabetes, ginseng radix ethanol extract was treated with pectinase and obtained the GINST. In the present study, we evaluate the beneficial effect of GINST on high fat diet (HFD)-induced hyper-glycemia and hyperlipidemia and action mechanism(s) in ICR mice. The mice were randomly divided into five groups: regular diet group (RD), high fat diet group (HFD), HFD plus GINST at 75 mg/kg (GINST75), 150 mg/kg (GINST150), and 300 mg/kg (GINST300). Oral glucose tolerance test reveals that GINST improves the glucose tolerance after glucose challenge. Fasting plasma glucose and insulin levels were decreased by 4.3% and 4.2% in GINST75, 10.9% and 20.0% in GINST150, and 19.6% and 20.9% in GINST300 compared to those in HFD control group. Insulin resistance indices were also markedly decreased by 8.2% in GINST75, 28.7% in GINST150, and 36.4% in GINST300, compared to the HFD control group. Plasma triglyceride, total cholesterol and non-esterified fatty acid levels in the GINST300 group were decreased by 13.5%, 22.7% and 24.1%, respectively, compared to those in HFD control group. Enlarged adipocytes of HFD control group were markedly decreased in GINST-treated groups, and shrunken islets of HFD control mice were brought back to near normal shape in GINST300 group. Furthermore, GINST enhanced phosphorylation of AMP-activated protein kinase (AMPK) and glucose transporter 4 (GLUT4). In summary, GINST prevents HFD-induced hyperglycemia and hyperlipidemia through reducing insulin resistance via activating AMPK-GLUT4 pathways, and could be a potential therapeutic agent for type 2 diabetes.
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Affiliation(s)
- Hai-Dan Yuan
- Department of Pharmacology and Clinical Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea
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21
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Kawase A, Yamada A, Gamou Y, Tahara C, Takeshita F, Murata K, Matsuda H, Samukawa K, Iwaki M. Effects of ginsenosides on the expression of cytochrome P450s and transporters involved in cholesterol metabolism. J Nat Med 2013; 68:395-401. [DOI: 10.1007/s11418-013-0791-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 06/20/2013] [Indexed: 11/28/2022]
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Hwang JA, Hwang MK, Jang Y, Lee EJ, Kim JE, Oh MH, Shin DJ, Lim S, Ji GO, Oh U, Bode AM, Dong Z, Lee KW, Lee HJ. 20-O-β-d-glucopyranosyl-20(S)-protopanaxadiol, a metabolite of ginseng, inhibits colon cancer growth by targeting TRPC channel-mediated calcium influx. J Nutr Biochem 2013; 24:1096-104. [DOI: 10.1016/j.jnutbio.2012.08.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 07/18/2012] [Accepted: 08/13/2012] [Indexed: 10/27/2022]
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23
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Ryu JS, Lee HJ, Bae SH, Kim SY, Park Y, Suh HJ, Jeong YH. The bioavailability of red ginseng extract fermented by Phellinus linteus. J Ginseng Res 2013; 37:108-16. [PMID: 23717164 PMCID: PMC3659629 DOI: 10.5142/jgr.2013.37.108] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 09/25/2012] [Accepted: 09/25/2012] [Indexed: 11/18/2022] Open
Abstract
For the improvement of ginsenoside bioavailability, the ginsenosides of fermented red ginseng by Phellinus linteus (FRG) were examined with respect to bioavailability and physiological activity. The polyphenol content of FRG (19.14±0.50 mg/g) was significantly higher (p<0.05) compared with that of non-fermented red ginseng (NFRG, 11.31±1.15 mg/g). The antioxidant activities in FRG, such as 2,2’-diphenyl-1-picrylhydrazyl, 2,2-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid, and ferric reducing antioxidant power, were significantly higher (p<0.05) than those in NFRG. The HPLC analysis results showed that the FRG had a high level of ginsenoside metabolites. The total ginsenoside contents in NFRG and FRG were 41.65±1.53 mg/g and 50.12±1.43 mg/g, respectively. However, FRG had a significantly higher content (33.90±0.97 mg/g) of ginsenoside metabolites (Rg3, Rg5, Rk1, compound K, Rh1, F2, and Rg2) compared with NFRG (14.75±0.46 mg/g). The skin permeability of FRG was higher than that of NFRG using Franz diffusion cell models. In particular, after 3 h, the skin permeability of FRG was significantly higher (p<0.05) than that of NFRG. Using a rat everted intestinal sac model, FRG showed a high transport level compared with NFRG after 1 h. FRG had dramatically improved bioavailability compared with NFRG as indicated by skin permeation and intestinal permeability. The significantly greater bioavailability of FRG may have been due to the transformation of its ginsenosides by fermentation to more easily absorbable forms (ginsenoside metabolites).
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Affiliation(s)
- Jae Sik Ryu
- Department of Food Science and Nutrition, Dankook University, Yongin 448-701, Korea
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24
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Chen Y, Xu Y, Zhu Y, Li X. Anti-cancer effects of ginsenoside compound k on pediatric acute myeloid leukemia cells. Cancer Cell Int 2013; 13:24. [PMID: 23497352 PMCID: PMC3602037 DOI: 10.1186/1475-2867-13-24] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Accepted: 03/08/2013] [Indexed: 01/12/2023] Open
Abstract
Pediatric acute myeloid leukemia (AML) is a heterogeneous disease and remains clinically challenging. Currently chemotherapies are frequently associated with treatment-related death and long-term side effects. Therefore, alternative approaches with lower toxicity are highly desired. Ginsenosides and metabolites are the main ingredients responsible for the multiple pharmaceutical functions of ginseng, which is one of the most commonly consumed herbal medicines world widely. In the present study, we demonstrated that compound K, a major ginsenoside metabolite, inhibited the growth of the clinically relevant pediatric AML cell lines in a time- and dose-dependent manner. This growth inhibitory effect was attributable to suppression of DNA synthesis during cell proliferation. Furthermore, we observed significant G1 cell cycle arrest and apoptosis induced by compound K. The induction of apoptosis was accompanied by DNA double strand breaks. Our findings suggest that as a low toxic natural reagent, compound K could be a potential drug for pediatric AML intervention and to improve the outcome of pediatric AML treatment.
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Affiliation(s)
- Yan Chen
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P,R, China.
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25
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Xia HJ, Zhang ZH, Jin X, Hu Q, Chen XY, Jia XB. A novel drug-phospholipid complex enriched with micelles: preparation and evaluation in vitro and in vivo. Int J Nanomedicine 2013. [PMID: 23431115 DOI: 10.2147/ijn.s39526.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Mixed micelles are widely used to increase solubility and bioavailability of poorly soluble drugs. One promising antitumor drug candidate is 20(S)-protopanaxadiol (PPD), although its clinical application is limited by low water solubility and poor bioavailability after oral administration. In this study, we developed mixed micelles consisting of PPD-phospholipid complexes and Labrasol(®) and evaluated their potential for oral PPD absorption. Micelles were prepared using a solvent-evaporation method, and their physicochemical properties, including particle size, zeta potential, morphology, crystal type, drug loading, drug entrapment efficiency, and solubility, were characterized. Furthermore, in vitro release was investigated using the dialysis method, and transport and bioavailability of the mixed micelles were investigated through a Caco-2 cell monolayer and in vivo absorption studies performed in rats. Compared with the solubility of free PPD (3 μg/mL), the solubility of PPD in the prepared mixed micelles was 192.41 ± 1.13 μg/mL in water at room temperature. The in vitro release profiles showed a significant difference between the more rapid release of free PPD and the slower and more sustained release of the mixed micelles. At the end of a 4-hour transport study using Caco-2 cells, the apical-to-basolateral apparent permeability coefficients (P(app)) increased from (1.12 ± 0.21) × 10(6) cm/s to (1.78 ± 0.16) × 10(6) cm/s, while the basolateral-to-apical P(app) decreased from (2.42 ± 0.16) × 10(6) cm/s to (2.12 ± 0.32) × 10(6). In this pharmacokinetic study, compared with the bioavailability of free PPD (area under the curve [AUC](0-∞)), the bioavailability of PPD from the micelles (AUC(0-∞)) increased by approximately 216.36%. These results suggest that novel mixed micelles can significantly increase solubility, enhance absorption, and improve bioavailability. Thus, these prepared micelles might be potential carriers for oral PPD delivery in antitumor therapies.
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Affiliation(s)
- Hai-jian Xia
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, Nanjing, China
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26
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Xia HJ, Zhang ZH, Jin X, Hu Q, Chen XY, Jia XB. A novel drug-phospholipid complex enriched with micelles: preparation and evaluation in vitro and in vivo. Int J Nanomedicine 2013; 8:545-54. [PMID: 23431115 PMCID: PMC3575161 DOI: 10.2147/ijn.s39526] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Indexed: 12/26/2022] Open
Abstract
Mixed micelles are widely used to increase solubility and bioavailability of poorly soluble drugs. One promising antitumor drug candidate is 20(S)-protopanaxadiol (PPD), although its clinical application is limited by low water solubility and poor bioavailability after oral administration. In this study, we developed mixed micelles consisting of PPD–phospholipid complexes and Labrasol® and evaluated their potential for oral PPD absorption. Micelles were prepared using a solvent-evaporation method, and their physicochemical properties, including particle size, zeta potential, morphology, crystal type, drug loading, drug entrapment efficiency, and solubility, were characterized. Furthermore, in vitro release was investigated using the dialysis method, and transport and bioavailability of the mixed micelles were investigated through a Caco-2 cell monolayer and in vivo absorption studies performed in rats. Compared with the solubility of free PPD (3 μg/mL), the solubility of PPD in the prepared mixed micelles was 192.41 ± 1.13 μg/mL in water at room temperature. The in vitro release profiles showed a significant difference between the more rapid release of free PPD and the slower and more sustained release of the mixed micelles. At the end of a 4-hour transport study using Caco-2 cells, the apical-to-basolateral apparent permeability coefficients (Papp) increased from (1.12 ± 0.21) × 106 cm/s to (1.78 ± 0.16) × 106 cm/s, while the basolateral-to-apical Papp decreased from (2.42 ± 0.16) × 106 cm/s to (2.12 ± 0.32) × 106. In this pharmacokinetic study, compared with the bioavailability of free PPD (area under the curve [AUC]0–∞), the bioavailability of PPD from the micelles (AUC0–∞) increased by approximately 216.36%. These results suggest that novel mixed micelles can significantly increase solubility, enhance absorption, and improve bioavailability. Thus, these prepared micelles might be potential carriers for oral PPD delivery in antitumor therapies.
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Affiliation(s)
- Hai-jian Xia
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, Nanjing, China
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Increased effects of ginsenosides on the expression of cholesterol 7α-hydroxylase but not the bile salt export pump are involved in cholesterol metabolism. J Nat Med 2012; 67:545-53. [DOI: 10.1007/s11418-012-0713-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 09/29/2012] [Indexed: 11/30/2022]
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Whole cell biotransformation of major ginsenosides using Leuconostocs and Lactobacilli. Food Sci Biotechnol 2012. [DOI: 10.1007/s10068-012-0108-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Qi LW, Wang CZ, Du GJ, Zhang ZY, Calway T, Yuan CS. Metabolism of ginseng and its interactions with drugs. Curr Drug Metab 2012; 12:818-22. [PMID: 21619519 DOI: 10.2174/138920011797470128] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 03/15/2011] [Accepted: 04/13/2011] [Indexed: 01/27/2023]
Abstract
Ginseng is an herbal medicine used worldwide. It is reported to have a wide range of pharmacological activities because of a diversified group of steroidal saponins called ginsenosides. Compared to extensive pharmacological studies of ginseng, the pharmacokinetics, especially the metabolism of this herb, has received less attention. In this article we review the known pharmacokinetic data on ginseng. Understanding ginseng's pharmacokinetics may reduce the potential for interactions in patients who use both ginseng and prescription medications. In addition, bioavailability after taking ginseng orally is low, and the metabolites of ginsenosides produced by gut microbiota may be biologically active. One ginseng metabolite, Compound K, and its potential for cancer chemoprevention is also discussed. An active ginseng metabolite may differ in distribution and clearance from its parent compound, and the parent compound and its metabolite may be bioactive by similar or different mechanisms. Thus, further investigation of ginseng metabolites is needed for predicting the therapeutic outcome with ginseng.
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Affiliation(s)
- Lian-Wen Qi
- Tang Center for Herbal Medicine Research and Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, 5841 South Maryland Avenue, MC 4028, Chicago, Illinois 60637, USA
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Hu C, Song G, Zhang B, Liu Z, Chen R, Zhang H, Hu T. Intestinal metabolite compound K of panaxoside inhibits the growth of gastric carcinoma by augmenting apoptosis via Bid-mediated mitochondrial pathway. J Cell Mol Med 2012; 16:96-106. [PMID: 21323864 PMCID: PMC3823096 DOI: 10.1111/j.1582-4934.2011.01278.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Compound K (20-O-β-D-glucopyranosyl-20(S)-protopanaxadiol, CK), an intestinal bacterial metabolite of panaxoside, has been shown to inhibit tumour growth in a variety of tumours. However, the mechanisms involved are largely unknown. We use human gastric carcinoma cell lines BGC823, SGC7901 and human gastric carcinoma xenograft in nude mice as models to study the mechanisms of CK in gastric cancers. We found that CK significantly inhibits the viabilities of BGC823 and SGC7901 cells in dose- and time-dependent manners. CK-induced BGC823 and SGC7901 cells apoptosis and cell cycle arrest in G2 phase by up-regulation of p21 and down-regulation of cdc2 and cyclin B1. Further studies show that CK induces apoptosis in BGC823 and SGC7901 cells mainly through mitochondria-mediated internal pathway, and that CK induces the translocation of nuclear Bid to mitochondria. Finally, we found that CK effectively inhibited the tumour formation of SGC7901 cells in nude mice. Our studies show that CK can inhibit the viabilities and induce apoptosis of human gastric carcinoma cells via Bid-mediated mitochondrial pathway.
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Affiliation(s)
- Chun Hu
- Cancer Research Center, Xiamen University Medical College, Xiamen, China
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Her Y, Lee YC, Oh JH, Choi YE, Lee CW, Kim JS, Kim HM, Yang JW. An application of β-glycosidase to transformation of ginsenosides for the effective production of specific ginsenosides with biological efficacy. BIOTECHNOL BIOPROC E 2012. [DOI: 10.1007/s12257-011-0678-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Koo HN, Jeong HJ, Choi IY, An HJ, Moon PD, Kim SJ, Jee SY, Um JY, Hong SH, Shin SS, Yang DC, Seo YS, Kim HM. Mountain Grown Ginseng Induces Apoptosis in HL-60 Cells and Its Mechanism Have Little Relation with TNF-α Production. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 35:169-82. [PMID: 17265560 DOI: 10.1142/s0192415x07004710] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The root of ginseng is one of the most popular natural tonics in Oriental countries. Ginseng grown in the wild, deep in the mountains, is known as Sansam (mountain grown ginseng, MGG). MGG belongs to Araliaceae and Panax. In this study, we investigated the effects of MGG on the cytotoxicity, induction of apoptosis and the putative pathways of its actions in human promyelocytic leukemia cells, HL-60. Using apoptosis analysis, we found that MGG is a potent inducer of apoptosis, but it has less effect on human peripheral blood mononuclear cells. Caspase-3 activation and subsequent apoptotic cell death in MGG-treated cells were partially blocked by the caspase-3 inhibitor, Z-DEVD-FMK. MGG also inhibited the caspase-8 activity. To determine whether MGG-induced apoptosis is involved in tumor necrosis factor-α (TNF-α) secretion, TNF-α secretion was quantified by enzyme-linked immunosorbent assay (ELISA) method. Unexpectedly, MGG significantly decreased the TNF-α secretion compared to the control. These results suggest that MGG-induced cytotoxicity have little relation with the secretion of TNF-α in HL-60 cells. Furthermore, MGG with rIFN-γ synergistically increased nitric oxide (NO) production in mouse peritoneal macrophages. Taken together, our data indicate that MGG is a potent inducer of apoptosis on HL-60 cells and these abilities could be used clinically for the treatment of cancer.
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Affiliation(s)
- Hyun-Na Koo
- Department of Pharmacology, College of Oriental Medicine, Institute of Oriental Medicine, Kyung Hee University, 1 Hoegi-Dong, Dongdaemun-Gu, Seoul, Republic of Korea
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Jin H, Seo JH, Uhm YK, Jung CY, Lee SK, Yim SV. Pharmacokinetic comparison of ginsenoside metabolite IH-901 from fermented and non-fermented ginseng in healthy Korean volunteers. JOURNAL OF ETHNOPHARMACOLOGY 2012; 139:664-667. [PMID: 22178175 DOI: 10.1016/j.jep.2011.11.052] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 11/17/2011] [Accepted: 11/25/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE IH-901 (20-O-beta-D-glucopyranosyl-20(S)-protopanaxadiol) is a novel ginseng saponin metabolite formed by human intestinal bacteria and is known to have antitumor and antimetastatic effects. However, there has been no pharmacokinetic study of IH-901 in human beings. AIM OF THE STUDY The aim of this study was to investigate the pharmacokinetic differences of IH-901 from fermented and non-fermented ginseng. MATERIALS AND METHODS To investigate whether the pharmacokinetics of IH-901 differ between fermented and non-fermented ginseng, an open label, randomized, single dose, fasting, two-period, cross-over, pharmacokinetic study was conducted. A total of 24 healthy Korean male volunteers participated in this study. All subjects were allocated into two equal groups and administered 3g of fermented or non-fermented Panax ginseng. Serial blood samples for pharmacokinetic analysis were collected in the 24 h after dosing. Plasma IH-901 concentration was measured by a validated high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS) method. Pharmacokinetic parameters including AUC(t), C(max), and T(max) were calculated by noncompartmental models in the BA-CALC program (KFDA, 2008, 1.0.0, Korea). RESULTS After oral administration of fermented ginseng, 5 subjects experienced diarrhea. The means of AUC(t) and C(max) were significantly different between the two groups. In the fermented ginseng group, AUC(t) was 2083.09±91.97 ng h/mL, a 15.5-fold increase over that of IH-901 from the non-fermented group (134.50±63.10 ng h/mL), and the mean C(max) was 325.00±91.97 ng/mL in the fermented ginseng group, a 27-fold higher value than that in the non-fermented group (13.88±7.24 ng/mL). T(max) was 3.29±1.00 and 12.04±4.96 h in the fermented and non-fermented group, respectively. CONCLUSIONS The results of this study showed that the pharmacokinetic parameters of IH-901 from fermented Panax ginseng are different from those of non-fermented ginseng, from which IH-901 is formed by intestinal fermentation.
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Affiliation(s)
- Hui Jin
- Department of Clinical Pharmacology, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
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Cao B, Li ST, Li Z, Deng WL. Yiqi zhuyu decoction combined with FOLFOX-4 as first-line therapy in metastatic colorectal cancer. Chin J Integr Med 2011; 17:593-9. [PMID: 21826593 DOI: 10.1007/s11655-011-0822-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To evaluate the efficacy and safety of yiqi zhuyu decoction (YZD) combined with oxaliplatin plus 5-flurouracil/leucovorin (FOLFOX-4) in the patients with metastatic colorectal cancer (MCRC). METHODS A total of 120 patients with MCRC were randomly divided into the experimental group (FOLFOX-4 plus YZD, 60 cases) and the control group (FOLFOX-4 plus placebo, 60 cases), according to the sequence of hospitalization from January 2005 to December 2007. The treatment was supposed to be continued until disease progression (PD) or for 48 weeks (i.e., up to 24 cycles of FOLFOX-4). Response rate (RR), progression-free survival (PFS), overall survival (OS) and adverse events (AEs) were observed. RESULTS RR was 41.5% in the experimental group and 34.0% in the control group [odds ratio (OR): 1.18, 95% CI: 0.77 to 1.82, P=0.432]. Median PFS were 9.0 months and 8.0 months, respectively [hazard ratio (HR): 0.78, 95% CI: 0.53 to 1.15, P=0.215]. Median OS were 21.0 months and 18.0 months (HR: 0.65, 95% CI: 0.43 to 0.99, P=0.043) and grade 3/4 AEs were 56.6% and 76.7% (OR: 0.61, 95% CI: 0.18 to 0.87, P=0.020), respectively. CONCLUSIONS YZD combined with FOLFOX-4 chemotherapy significantly improved OS in this first-line trial in the patients with MCRC and significantly decreased grade 3/4 AEs. However, RR was not improved, and PFS did not reach statistical significance by the addition of YZD. The treatment of YZD combined with FOLFOX-4 may be necessary in order to optimize efficacy and safety.
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Affiliation(s)
- Bo Cao
- Department of Colorectal and Anal Surgery, First Affiliated Hospital of Guiyang College of Traditional Chinese Medicine, Guiyang, China
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35
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Qi LW, Wang CZ, Yuan CS. Ginsenosides from American ginseng: chemical and pharmacological diversity. PHYTOCHEMISTRY 2011; 72:689-99. [PMID: 21396670 PMCID: PMC3103855 DOI: 10.1016/j.phytochem.2011.02.012] [Citation(s) in RCA: 218] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 01/11/2011] [Accepted: 02/14/2011] [Indexed: 05/19/2023]
Abstract
Ginseng occupies a prominent position in the list of best-selling natural products in the world. Compared to the long history of use and widespread research on Asian ginseng, the study of American ginseng is relatively limited. In the past decade, some promising advances have been achieved in understanding the chemistry, pharmacology and structure-function relationship of American ginseng. To date, there is no systematic review of American ginseng. In this review, the different structures of the ginsenosides in American ginseng are described, including naturally occurring compounds and those resulting from steaming or biotransformation. Preclinical and clinical studies published in the past decade are also discussed. Highlighted are the chemical and pharmacological diversity and potential structural-activity relationship of ginsenosides. The goal is that this article is a useful reference to chemists and biologists researching American ginseng, and will open the door to agents in drug discovery.
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Affiliation(s)
- Lian-Wen Qi
- Tang Center for Herbal Medicine Research and Department of Anesthesia and Critical Care, The Pritzker School of Medicine, The University of Chicago, Chicago, IL 60637, USA.
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Ilarraza R, Wu Y, Davoine F, Ebeling C, Adamko DJ. Human dendritic cells promote an antiviral immune response when stimulated by CVT-E002. J Pharm Pharmacol 2011; 63:670-8. [DOI: 10.1111/j.2042-7158.2011.01257.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abstract
Objectives
There is interest in developing new compounds to enhance the immune response to airway virus infections. CVT-E002 is a patented ginseng extract shown to decrease symptoms of virus infection in clinical trials. We hypothesized that the mechanism for this antiviral effect could be through modulation of dendritic cells leading to enhanced T-cell activation.
Methods
Human monocyte-derived dendritic cells (moDC) exposed to CVT-E002 (or not) were co-cultured with autologous T cells, with or without virus (respiratory syncytial virus or parainfluenza virus). Effects of CVT-E002 on cell function were determined through flow cytometry, 5-bromo-2′-deoxyuridine (BrdU) incorporation and ELISA.
Key findings
moDC cultured with CVT-E002 or virus induced greater activation of T cells, as measured by CD25 expression and BrdU incorporation, compared with untreated moDC. Responding T cells were CD4+CD45RO+. Co-cultures of CVT-E002 treated moDC with T cells responded with increased release of Th1-type cytokines (interferon-gamma, tumour necrosis factor and interleukin-12). CVT-E002-treated moDC showed increased expression of CD83, CD80 and CD86. Lipopolysaccharide levels were not detected in CVT-E002 and antagonists for Toll-like receptor-4 did not inhibit CVT-E002-induced moDC maturation.
Conclusions
CVT-E002 induced moDC maturation, which caused increased memory T-cell activation and Th1-type cytokine response.
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Affiliation(s)
- Ramses Ilarraza
- Department of Pediatrics, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
| | - Yingqi Wu
- Department of Pediatrics, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
| | - Francis Davoine
- Campus Saint-Jean, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
| | - Cory Ebeling
- Department of Pediatrics, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
| | - Darryl J Adamko
- Department of Pediatrics, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
- Department of Medicine, University of Alberta, Pulmonary Research Group, Edmonton, AB, Canada
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Abdel-Wahhab MA, Gamil K, El-Kady AA, El-Nekeety AA, Naguib KM. Therapeutic Effects of Korean Red Ginseng Extract in Egyptian Patients with Chronic Liver Diseases. J Ginseng Res 2011. [DOI: 10.5142/jgr.2011.35.1.069] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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Rejinold NS, Muthunarayanan M, Muthuchelian K, Chennazhi K, Nair SV, Jayakumar R. Saponin-loaded chitosan nanoparticles and their cytotoxicity to cancer cell lines in vitro. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2010.11.056] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Tournas V, Kohn J, Katsoudas E. Interactions between various microbes and ginseng botanicals. Crit Rev Microbiol 2011; 37:113-20. [DOI: 10.3109/1040841x.2010.520670] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Jeong A, Lee HJ, Jeong SJ, Lee HJ, Lee EO, Bae H, Kim SH. Compound K inhibits basic fibroblast growth factor-induced angiogenesis via regulation of p38 mitogen activated protein kinase and AKT in human umbilical vein endothelial cells. Biol Pharm Bull 2011; 33:945-50. [PMID: 20522957 DOI: 10.1248/bpb.33.945] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Compound K (CK; 20-O-beta-D-glucopyranosyl-20(S)-protopanaxadiol), an active ginseng saponin metabolite, exerts anticancer activity via apoptosis induction in various cancers. In the present study, we investigated the anti-angiogenic activity of CK and its molecular mechanisms in human umbilical vein endothelial cells (HUVECs). Angiogenesis was induced in HUVECS by basic fibroblast growth factor (bFGF), a potent angiogenic growth factor. CK significantly inhibited the proliferation and also attenuated the expression of a proliferating protein cyclin D1 in bFGF treated HUVECs. Also, CK significantly inhibited the migration and tube formation of bFGF treated HUVECs at non-cytotoxic concentrations, reduced secreted level of vascular endothelial growth factor (VEGF) and increased the secreted level of pigment epithelium-derived factor (PEDF) in HUVECs. In addition, CK effectively disrupted bFGF-induced neo-vascularization in the Matrigel plugs excised from mice in vivo. Notably, we have found that CK downregulated the phosphorylation of p38 mitogen-activated protein kinase (MAPK) and AKT in bFGF treated HUVECs. Taken together, our findings for the first time indicate that CK exerts anti-angiogenic activity via inhibition of p38 MAPK and AKT in HUVECs with the potential of a cancer chemopreventive agent.
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Affiliation(s)
- Arong Jeong
- College of Oriental Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
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Yuan HD, Kim SJ, Chung SH. Beneficial effects of IH-901 on glucose and lipid metabolisms via activating adenosine monophosphate-activated protein kinase and phosphatidylinositol-3 kinase pathways. Metabolism 2011; 60:43-51. [PMID: 20153001 DOI: 10.1016/j.metabol.2009.12.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 12/20/2009] [Accepted: 12/23/2009] [Indexed: 12/21/2022]
Abstract
IH-901 is an intestinal metabolite of ginsenosides found in Panax ginseng. In the present study, effects of IH-901 on glucose and lipid metabolisms were examined using C2C12 myotubes and C57BL/ksJ db/db mice. A significant increase in phosphorylated adenosine monophosphate-activated protein kinase was observed when differentiated C2C12 myotubes were treated with IH-901. Glucose transporter 4 protein expressions were also up-regulated when muscle cells were treated with of IH-901 up to 60 minutes, resulting in stimulation of glucose uptake by 25% as compared with untreated cells. In addition, phosphatidylinositol-3 kinase and Akt protein expressions were increased when C2C12 myotubes were exposed to IH-901 for up to 3 hours; and these effects including glucose uptake were attenuated by pretreatment with LY294002, a selective phosphatidylinositol-3 kinase inhibitor. In animal study, IH-901 at 25 mg/kg lowered the plasma glucose, triglyceride, cholesterol, and nonesterified fatty acid levels by 20.7%, 41.6%, 20.2%, and 24.6%, respectively, compared with control mice. In the meantime, plasma insulin levels were significantly increased by 2.2 and 3.4 times in 10 and 25 mg/kg-treated mice, respectively, compared with control mice, in parallel with the histologic observation showing a preserved architecture of the pancreatic islet. Protein and gene expression patterns for adenosine monophosphate-activated protein kinase, sterol regulatory element binding protein-1a, and glucose transporter 4 in the liver and skeletal muscles were similar to those in cell studies. In summary, IH-901 might be a promising therapeutic agent improving altered glucose and lipid metabolisms revealed in type 2 diabetes mellitus patients.
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Affiliation(s)
- Hai-Dan Yuan
- Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 130-701, Republic of Korea
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Kim AD, Kang KA, Zhang R, Lim CM, Kim HS, Kim DH, Jeon YJ, Lee CH, Park J, Chang WY, Hyun JW. Ginseng saponin metabolite induces apoptosis in MCF-7 breast cancer cells through the modulation of AMP-activated protein kinase. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2010; 30:134-140. [PMID: 21787643 DOI: 10.1016/j.etap.2010.04.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 04/23/2010] [Accepted: 04/30/2010] [Indexed: 05/31/2023]
Abstract
Previous studies have shown that the ginseng saponin metabolite, Compound K (20-O-d-glucopyranosyl-20(S)-protopanaxadiol, IH901), suppresses proliferation of various cancers and induces apoptosis. AMP-activated protein kinase (AMPK) is a sensor of cellular energy states and is involved in apoptosis of cancer cells. We hypothesized that Compound K may exert cytotoxicity in MCF-7 human breast cancer cells through modulation of AMPK, followed by a decrease in cyclooxygenase-2 (COX-2) expression. Compound K inhibited cell growth, induced apoptosis via generation of reactive oxygen species (ROS), as well as decreasing COX-2 expression and prostaglandin E(2) (PGE(2)) levels. These effects of Compound K were induced via an AMPK-dependent pathway and were abrogated by a specific AMPK inhibitor. These results suggest that Compound K induced apoptosis by modulating AMPK-COX-2 signaling in MCF-7 human breast cancer cells.
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Affiliation(s)
- Areum Daseul Kim
- Department of Marine Life Science, Jeju National University, Jeju-si 690-756, Republic of Korea
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Kim BG, Choi SY, Kim MR, Suh HJ, Park HJ. Changes of ginsenosides in Korean red ginseng (Panax ginseng) fermented by Lactobacillus plantarum M1. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.04.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Cho HJ, Jung EY, Oh SH, Yoon B, Suh HJ, Lee HS. Microbial Conversion of Ginsenoside from the Extract of Korean Red Ginseng (Panax ginseng) by Lactobacillus sp. Prev Nutr Food Sci 2010. [DOI: 10.3746/jfn.2010.15.2.105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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45
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Qi LW, Wang CZ, Yuan CS. American ginseng: potential structure-function relationship in cancer chemoprevention. Biochem Pharmacol 2010; 80:947-54. [PMID: 20599804 DOI: 10.1016/j.bcp.2010.06.023] [Citation(s) in RCA: 186] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Revised: 06/08/2010] [Accepted: 06/09/2010] [Indexed: 02/06/2023]
Abstract
Ginseng has a prominent position on the list of best-selling herbal products in the world, and its main active constituents are thought to be ginsenosides. Compared with the long history of use and widespread research on Asian ginseng, studies of American ginseng are relatively limited, especially regarding cancer chemoprevention. In recent studies of American ginseng, steaming or heating altered the ginsenoside profile and thereby increased anticancer effects. Yet the ginsenoside structures and their activities have not been systematically elucidated. In this commentary, we introduce the different ginsenosides in American ginseng, both the naturally occurring compounds and those resulting from steaming or biotransformation. We briefly review American ginseng's reported anticancer effects and their mechanisms of action, and explore the possible structural-function relationship with a focus on sugar molecules, hydroxyl groups and stereoselectivity in ginsenosides. Understanding these relationships may produce insights into chemical and pharmacological approaches for enhancing the chemopreventive effects of ginsenoside and for developing novel anticancer agents.
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Affiliation(s)
- Lian-Wen Qi
- Tang Center for Herbal Medicine Research, Department of Anesthesia & Critical Care, The Pritzker School of Medicine, University of Chicago, 5841 South Maryland Avenue, MC 4028, Chicago, IL 60637, United States
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Kim YJ, Chung JW, Lee SJ, Choi KS, Kim JH, Hahm KB. Progression from chronic atrophic gastritis to gastric cancer; tangle, toggle, tackle with Korea red ginseng. J Clin Biochem Nutr 2010; 46:195-204. [PMID: 20490314 PMCID: PMC2872224 DOI: 10.3164/jcbn.10-03] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Accepted: 01/15/2010] [Indexed: 01/05/2023] Open
Abstract
Key molecular players that link inflammation to carcinogenesis are prostaglandins, cytokines, nuclear factor-κB (NF-κB), chemokines, angiogenic growth factors, and free radicals, all of which lead to increased mutations and altered functions of important enzymes and proteins, for example, activation of oncogenic products and/or inhibition of tumor suppressor proteins, in inflamed tissues, thus contributing to multi-stage carcinogenesis process. Interpreted reversely, the identification of the molecular mechanisms by which chronic inflammation increases cancer risk or optimal intervention of targeted drugs or agents during the inflammation-associated carcinogenic process could be a necessary basis for developing new strategy of cancer prevention at many sites. In this review, we discuss the possibilities for cancer prevention by controlling inflammation process in Helicobacter pylori (H. pylori)-associated inflamed stomach with Korea red ginseng. Korea red ginseng is a good example of a natural herb that has ubiquitous properties that are conductive to stop inflammatory carcinogenesis that is un wanted outcome of H. pylori infection, rendering rejuvenation of chronic atrophic gastritis.
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Affiliation(s)
- Yoon Jae Kim
- Department of Gastroenterology Gachon Graduate School of Medicine, 7-45 Songdo-dong, Yeonsu-gu, Incheon 406-840, Korea
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Son YM, Kwak CW, Lee YJ, Yang DC, Park BC, Lee WK, Han SH, Yun CH. Ginsenoside Re enhances survival of human CD4+ T cells through regulation of autophagy. Int Immunopharmacol 2010; 10:626-31. [PMID: 20230918 DOI: 10.1016/j.intimp.2010.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 03/02/2010] [Accepted: 03/06/2010] [Indexed: 01/07/2023]
Abstract
In the present study, we examined the effects of ginsenoside Re (Re) on cytokine expression, cytokine-dependent autophagy and cell survival in human CD4(+) T cells. When CD4(+) T cells isolated from human peripheral blood were treated with Re, LC3 and monodansylcadaverine (MDC), representative markers of autophagy, were decreased in a dose-dependent manner. Interestingly, Re suppressed the production of interferon-gamma (IFN-gamma) and immunity-related GTPase family M (IRGM) in CD4(+) T cells whereas no changes in other autophagy-related signaling molecules (ERK, p38 and AKT-mTOR-p70S6k) were found. Concomitantly, we observed that Re increased the proliferation of CD4(+) T cells with decreased cell death. Our results demonstrate that ginsenoside Re enhanced viability of CD4(+) T cells through the regulation of IFN-gamma-dependent autophagy activity.
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Affiliation(s)
- Young Min Son
- Laboratory of Protein Engineering and Comparative Immunology, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea
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Jia L, Zhao Y, Liang XJ. Current evaluation of the millennium phytomedicine- ginseng (II): Collected chemical entities, modern pharmacology, and clinical applications emanated from traditional Chinese medicine. Curr Med Chem 2010; 16:2924-42. [PMID: 19689273 DOI: 10.2174/092986709788803204] [Citation(s) in RCA: 193] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This review, a sequel to part 1 in the series, collects about 107 chemical entities separated from the roots, leaves and flower buds of Panax ginseng, quinquefolius and notoginseng, and categorizes these entities into about 18 groups based on their structural similarity. The bioactivities of these chemical entities are described. The 'Yin and Yang' theory and the fundamentals of the 'five elements' applied to the traditional Chinese medicine (TCM) are concisely introduced to help readers understand how ginseng balances the dynamic equilibrium of human physiological processes from the TCM perspectives. This paper concerns the observation and experimental investigation of biological activities of ginseng used in the TCM of past and present cultures. The current biological findings of ginseng and its medical applications are narrated and critically discussed, including 1) its antihyperglycemic effect that may benefit type II diabetics; in vitro and in vivo studies demonstrated protection of ginseng on beta-cells and obese diabetic mouse models. The related clinical trial results are stated. 2) its aphrodisiac effect and cardiovascular effect that partially attribute to ginseng's bioactivity on nitric oxide (NO); 3) its cognitive effect and neuropharmacological effect that are intensively tested in various rat models using purified ginsenosides and show a hope to treat Parkinson's disease (PD); 4) its uses as an adjuvant or immunotherapeutic agent to enhance immune activity, appetite and life quality of cancer patients during their chemotherapy and radiation. Although the apoptotic effect of ginsenosides, especially Rh2, Rg3 and Compound K, on various tumor cells has been shown via different pathways, their clinical effectiveness remains to be tested. This paper also updates the antioxidant, anti-inflammatory, anti-apoptotic and immune-stimulatory activities of ginseng, its ingredients and commercial products, as well as common side effects of ginseng mainly due to its overdose, and its pharmacokinetics.
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Affiliation(s)
- Lee Jia
- Developmental Therapeutics Program, National Cancer Institute/ NIH, Rockville, MD 20852, USA.
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Ro JY, Han YN, Choi KT, Lee CH. Effects of 20(S)-Protopanaxadiol and 20(S)-Protopanaxatriol on the Inflammatory Mediators Release from the Activated Mast Cells. J Ginseng Res 2009. [DOI: 10.5142/jgr.2009.33.4.316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Cho SH, Chung KS, Choi JH, Kim DH, Lee KT. Compound K, a metabolite of ginseng saponin, induces apoptosis via caspase-8-dependent pathway in HL-60 human leukemia cells. BMC Cancer 2009; 9:449. [PMID: 20017956 PMCID: PMC2806409 DOI: 10.1186/1471-2407-9-449] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Accepted: 12/18/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Compound K [20-O-beta-(D-glucopyranosyl)-20(S)-protopanaxadiol], a metabolite of the protopanaxadiol-type saponins of Panax ginseng C.A. Meyer, has been reported to possess anti-tumor properties to inhibit angiogenesis and to induce tumor apoptosis. In the present study, we investigated the effect of Compound K on apoptosis and explored the underlying mechanisms involved in HL-60 human leukemia cells. METHODS We examined the effect of Compound K on the viabilities of various cancer cell lines using MTT assays. DAPI assay, Annexin V and PI double staining, Western blot assay and immunoprecipitation were used to determine the effect of Compound K on the induction of apoptosis. RESULTS Compound K was found to inhibit the viability of HL-60 cells in a dose- and time-dependent manner with an IC50 of 14 muM. Moreover, this cell death had typical features of apoptosis, that is, DNA fragmentation, DNA ladder formation, and the externalization of Annexin V targeted phosphatidylserine residues in HL-60 cells. In addition, compound-K induced a series of intracellular events associated with both the mitochondrial- and death receptor-dependent apoptotic pathways, namely, (1) the activation of caspases-3, -8, and -9; (2) the loss of mitochondrial membrane potential; (3) the release of cytochrome c and Smac/DIABLO to the cytosol; (4) the translocation of Bid and Bax to mitochondria; and (5) the downregulations of Bcl-2 and Bcl-xL. Furthermore, a caspase-8 inhibitor completely abolished caspase-3 activation, Bid cleavage, and subsequent DNA fragmentation by Compound K. Interestingly, the activation of caspase-3 and -8 and DNA fragmentation were significantly prevented in the presence of cycloheximide, suggesting that Compound K-induced apoptosis is dependent on de novo protein synthesis. CONCLUSIONS The results indicate that caspase-8 plays a key role in Compound K-stimulated apoptosis via the activation of caspase-3 directly or indirectly through Bid cleavage, cytochrome c release, and caspase-9 activation.
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Affiliation(s)
- Sung-Hee Cho
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung-Hee University, Seoul 130-701, South Korea
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