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Li X, Cao D, Sun S, Wang Y. Anticancer therapeutic effect of ginsenosides through mediating reactive oxygen species. Front Pharmacol 2023; 14:1215020. [PMID: 37564184 PMCID: PMC10411515 DOI: 10.3389/fphar.2023.1215020] [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: 05/01/2023] [Accepted: 07/10/2023] [Indexed: 08/12/2023] Open
Abstract
Dysregulation of reactive oxygen species (ROS) production and ROS-regulated pathways in cancer cells leads to abnormal accumulation of reactive oxygen species, displaying a double-edged role in cancer progression, either supporting transformation/proliferation and stimulating tumorigenesis or inducing cell death. Cancer cells can accommodate reactive oxygen species by regulating them at levels that allow the activation of pro-cancer signaling pathways without inducing cell death via modulation of the antioxidant defense system. Therefore, targeting reactive oxygen species is a promising approach for cancer treatment. Ginsenosides, their derivatives, and related drug carriers are well-positioned to modulate multiple signaling pathways by regulating oxidative stress-mediated cellular and molecular targets to induce apoptosis; regulate cell cycle arrest and autophagy, invasion, and metastasis; and enhance the sensitivity of drug-resistant cells to chemotherapeutic agents of different cancers depending on the type, level, and source of reactive oxygen species, and the type and stage of the cancer. Our review focuses on the pro- and anticancer effects of reactive oxygen species, and summarizes the mechanisms and recent advances in different ginsenosides that bring about anticancer effects by targeting reactive oxygen species, providing new ideas for designing further anticancer studies or conducting more preclinical and clinical studies.
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Affiliation(s)
- Xiaonan Li
- Department of Geriatrics, The First Hospital of Jilin University, Changchun, China
| | - Donghui Cao
- Department of Clinical Research, The First Hospital of Jilin University, Changchun, China
| | - Siming Sun
- Department of Clinical Research, The First Hospital of Jilin University, Changchun, China
| | - Yuehui Wang
- Department of Geriatrics, The First Hospital of Jilin University, Changchun, China
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Xu XY, Yi ES, Kang CH, Liu Y, Lee YG, Choi HS, Jang HB, Huo Y, Baek NI, Yang DC, Kim YJ. Whitening and inhibiting NF-κB-mediated inflammation properties of the biotransformed green ginseng berry of new cultivar K1, ginsenoside Rg2 enriched, on B16 and LPS-stimulated RAW 264.7 cells. J Ginseng Res 2021; 45:631-641. [PMID: 34764718 PMCID: PMC8569260 DOI: 10.1016/j.jgr.2021.02.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 11/21/2022] Open
Abstract
Background Main bioactive constituents and pharmacological functions of ripened red ginseng berry (Panax ginseng Meyer) have been frequently reported. Yet, the research gap targeting the beneficial activities of transformed green ginseng berries has not reported elsewhere. Methods Ginsenosides of new green berry cultivar K-1 (GK-1) were identified by HPLC-QTOF/MS. Ginsenosides bioconversion in GK-1 by bgp1 enzyme was confirmed with HPLC and TLC. Then, mechanisms of GK-1 and β-glucosidase (bgp1) biotransformed GK-1 (BGK-1) were determined by Quantitative Reverse Transcription-Polymerase Chain Reaction and Western blot. Results GK-1 possesses highest ginsenosides especially ginsenoside-Re amongst seven ginseng cultivars including (Chunpoong, Huangsuk, Kumpoong, K-1, Honkaejong, Gopoong, and Yunpoong). Ginseng root’s biomass is not affected with the harvest of GK-1 at 3 weeks after flowering period. Then, Re is bio-converted into a promising pharmaceutical effect of Rg2 via bgp1. According to the results of cell assays, BGK-1 shows decrease of tyrosinase and melanin content in α-melanocyte-stimulating hormone challenged-murine melanoma B16 cells. BGK-1 which is comparatively more effective than GK-1 extract shows significant suppression of the nuclear factor (NF)-κB activation and inflammatory target genes, in LPS-stimulated RAW 264.7 cells. Conclusion These results reported effective whitening and anti-inflammatory of BGK-1 as compared to GK-1.
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Affiliation(s)
- Xing Yue Xu
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Eun Seob Yi
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Chang Ho Kang
- Division of Applied Life Science and PMBBRC, Gyeongsang National University, Jinju, Republic of Korea
| | - Ying Liu
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Yeong-Geun Lee
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Han Sol Choi
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Hyun Bin Jang
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Yue Huo
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Nam-In Baek
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Deok Chun Yang
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Yeon-Ju Kim
- Graduate School of Biotechnology, and College of Life Science, Kyung Hee University, Yongin-si, Gyeonggi-do, Republic of Korea
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Hepatoprotective effect of ultrasonicated ginseng berry extract on a rat mild bile duct ligation model. J Ginseng Res 2019; 43:606-617. [PMID: 31695567 PMCID: PMC6823758 DOI: 10.1016/j.jgr.2018.07.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/27/2018] [Accepted: 07/17/2018] [Indexed: 12/28/2022] Open
Abstract
Background The Panax ginseng berry extract (GBE) is well known to have an antidiabetic effect. The aim of this study is to evaluate and investigate the protective effect of ultrasonication-processed P. ginseng berry extract (UGBE) compared with GBE on liver fibrosis induced by mild bile duct ligation (MBDL) model in rats. After ultrasonication process, the composition ratio of ginsenoside in GBE was changed. The component ratio of ginsenosides Rh1, Rh4, Rg2, Rg3, Rk1, Rk3, and F4 in the extract was elevated. Methods In this study, the protective effect of the newly developed UGBE was evaluated on hepatotoxicity and neuronal damage in MBDL model. Silymarin (150 mg/kg) was used for positive control. UGBE (100 mg/kg, 250 mg/kg, 500 mg/kg), GBE (250 mg/kg), and silymarin (150 mg/kg) were orally administered for 6 weeks after MBDL surgery. Results The MBDL surgery induced severe hepatotoxicity that leads to liver inflammation in rats. Also, the serum ammonia level was increased by MBDL surgery. However, the liver dysfunction of MBDL surgery–operated rats was attenuated by UGBE treatment via myeloid differentiation factor 88-dependent Toll-like receptor 4 signaling pathways. Conclusion UGBE has a protective effect on liver fibrosis induced by MBDL in rats through inhibition of the TLR4 signaling pathway in liver.
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Kim J, Toda T, Watanabe K, Shibuya S, Ozawa Y, Izuo N, Cho S, Seo DB, Yokote K, Shimizu T. Syringaresinol Reverses Age-Related Skin Atrophy by Suppressing FoxO3a-Mediated Matrix Metalloproteinase-2 Activation in Copper/Zinc Superoxide Dismutase-Deficient Mice. J Invest Dermatol 2018; 139:648-655. [PMID: 30798853 DOI: 10.1016/j.jid.2018.10.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/30/2018] [Accepted: 10/16/2018] [Indexed: 01/06/2023]
Abstract
Aging is characterized by accumulation of chronic and irreversible oxidative damage, chronic inflammation, and organ dysfunction. Superoxide dismutase (SOD) serves as a major enzyme for cellular superoxide radical metabolism and physiologically regulates cellular redox balance throughout the body. Copper/zinc superoxide dismutase-deficient (SOD1-/-) mice showed diverse phenotypes associated with enhanced oxidative damage in whole organs. Here, we found that oral treatment with syringaresinol (also known as lirioresinol B), which is the active component in the berries of Korean ginseng (Panax ginseng C.A. Meyer), attenuated the age-related changes in Sod1-/- skin. Interestingly, syringaresinol morphologically normalized skin atrophy in Sod1-/- mice and promoted fibroblast outgrowth from Sod1-/- skin in vitro. These protective effects were mediated by the suppression of matrix metalloproteinase-2 overproduction in Sod1-/- skin, but not by increased collagen expression. Syringaresinol also decreased the oxidative damage and the phosphorylation of FoxO3a protein, which was a transcriptional factor of matrix metalloproteinase-2, in Sod1-/- skin. These results strongly suggest that syringaresinol regulates the FoxO3-matrix metalloproteinase-2 axis in oxidative damaged skin and exhibits beneficial effects on age-related skin involution in Sod1-/- mice.
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Affiliation(s)
- Juewon Kim
- Vital Beautie Research Division, Amorepacific R&D Center, Giheung-gu, Yongin-si, Gyeonggi-do, Korea; Department of Advanced Aging Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan; Department of Clinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan
| | - Toshihiko Toda
- Department of Advanced Aging Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan
| | - Kenji Watanabe
- Department of Advanced Aging Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan
| | - Shuichi Shibuya
- Department of Advanced Aging Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan
| | - Yusuke Ozawa
- Department of Advanced Aging Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan
| | - Naotaka Izuo
- Department of Advanced Aging Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan
| | - Siyoung Cho
- Vital Beautie Research Division, Amorepacific R&D Center, Giheung-gu, Yongin-si, Gyeonggi-do, Korea
| | - Dae Bang Seo
- Vital Beautie Research Division, Amorepacific R&D Center, Giheung-gu, Yongin-si, Gyeonggi-do, Korea
| | - Koutaro Yokote
- Department of Clinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan
| | - Takahiko Shimizu
- Department of Advanced Aging Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan; Department of Clinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chuo-ku, Chiba, Japan.
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Chinese herb medicine matrine induce apoptosis in human esophageal squamous cancer KYSE-150 cells through increasing reactive oxygen species and inhibiting mitochondrial function. Pathol Res Pract 2018; 214:691-699. [PMID: 29567333 DOI: 10.1016/j.prp.2018.03.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/01/2018] [Accepted: 03/13/2018] [Indexed: 02/07/2023]
Abstract
Matrine, as a natural alkaloid isolated from the traditional herb medicine sophora flavescens, has been proved to possess excellent biological activities, including anticancer effects. Now, this research aims to assess the anticancer activities and the mechanism of matrine against esophageal cancer cells, we investigated the proliferative inhibition, apoptosis induction, as well as the underlying mechanism of matrine on esophageal cancer KYSE-150 cells. It was found that matrine could suppress KYSE-150 cell proliferation and significantly mediate cell apoptosis in a dose-dependent relation by increasing intracellular reactive oxygen species level and triggering mitochondrial membrane potential disruption. More precise mechanism studies demonstrated that matrine could up-regulate the expression of Bax proteins and down-regulate the expression of Bcl-2 proteins, as well as the activation about caspase-3, 8 and 9 in KYSE-150 cells. The morphological analysis of KYSE-150 cells exhibited that matrine could destroy the F-actin and nuclei structures and induce morphological damage with increased surface height distribution and roughness of cell membrane. These results not only demonstrated the potential anticancer activity mechanism of matrine at nanoscale, but also provide preliminary guidance for the treatment of esophageal cancer using matrine.
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Role of ginsenosides in reactive oxygen species-mediated anticancer therapy. Oncotarget 2017; 9:2931-2950. [PMID: 29416826 PMCID: PMC5788694 DOI: 10.18632/oncotarget.23407] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 12/05/2017] [Indexed: 12/22/2022] Open
Abstract
Cancer is still a global public health problem, which is the leading cause of death in most countries. Ginseng has been used for centuries all over the world as a panacea that promotes longevity. As the king of herb plants, ginseng holds great promise as a new treatment option which is used either by itself or in combination with other medicinal ingredients that is widely accepted as complementary and alternative medicine in cancer therapy. Ginsenosides, the major pharmacologically active ingredients of ginseng, have been shown to have multiple medicinal effects including prominent anticancer activity. The purpose of this review is to give our perspective about the roles of ginsenosides in reactive oxygen species (ROS)-mediated anticancer therapy. Additionally, to provide new sheds light for further improvement and carry out pre-clinical and clinical trials to develop it successfully into a potential anticancer agent. Panax herbs and their derivate/metabolites ginsenosides exert beneficial effects for treating various types of cancers. The mechanism of ROS-mediated anticancer activities of ginsenosides varies depending on the specific type of cancer cells involved. Ginsenosides may suppress cancer cell proliferation through anti-oxidation on tumor initiation and induce apoptosis, paraptosis or autophagy via generation of ROS on tumor progression, promotion, angiogenesis, invasion and metastasis by various signaling pathways e.g., activation of AMPK, MEK, ASK-1/JNK, ESR2-NCF1-ROS, ER-dependent PI3K/Akt/Nrf2, P53-CHOP, ROS-JNK-autophagy, and/or inhibition of PI3K/Akt signaling pathways. These multiple effects rather than a single may play a crucial role in emerging ginsenosides as a successful anticancer drug.
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Induction of apoptosis in human glioma cell lines of various grades through the ROS-mediated mitochondrial pathway and caspase activation by Rhaponticum carthamoides transformed root extract. Mol Cell Biochem 2017; 445:89-97. [PMID: 29238899 DOI: 10.1007/s11010-017-3254-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 12/10/2017] [Indexed: 12/23/2022]
Abstract
The present study is the first investigation of the inhibitory effect of Rhaponticum carthamoides transformed roots (TR) extract on the proliferation of grade II and III human glioma cells. TR extract showed the cytotoxic effect and inhibited the colony formation of both glioma cell lines in dose-dependent manner. The root extract induced apoptosis by increasing of the reactive oxygen species (about threefold compared to the control cells) leading to a disruption of mitochondrial membrane potential. Additionally, the mRNA levels of the apoptotic factors such as Bax, Tp53, caspase-3, and caspase-9 were observed to increase. These results indicate that the TR extract possesses anticancer activity by inhibiting glioma cell proliferation and inducing apoptotic cell death, and may be used as a promising anticancer agent.
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Cui L, Bu W, Song J, Feng L, Xu T, Liu D, Ding W, Wang J, Li C, Ma B, Luo Y, Jiang Z, Wang C, Chen J, Hou J, Yan H, Yang L, Jia X. Apoptosis induction by alantolactone in breast cancer MDA-MB-231 cells through reactive oxygen species-mediated mitochondrion-dependent pathway. Arch Pharm Res 2017; 41:299-313. [DOI: 10.1007/s12272-017-0990-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 11/19/2017] [Indexed: 12/26/2022]
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Protective effect of ultrasonication-processed ginseng berry extract on the D-galactosamine/lipopolysaccharide-induced liver injury model in rats. J Ginseng Res 2017; 42:540-548. [PMID: 30337815 PMCID: PMC6190499 DOI: 10.1016/j.jgr.2017.07.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/20/2017] [Indexed: 12/27/2022] Open
Abstract
Background Acute hepatic failure is a life-threatening critical condition associated with rapid deterioration of liver function and liver transplantation. Several studies have shown that Panax ginseng Mayer has antidiabetic and hepatoprotective effects. However, the hepatoprotective effect of ginseng berry is still unveiled. In this study, we evaluated the hepatoprotective effects of ultrasonication-processed ginseng berry extract (UGBE) on acute hepatic failure model in rats. Methods Ginseng berry extract (GBE) was ultrasonically processed. The GBE, silymarin, and UGBE were orally administered to male Sprague-Dawley rats for 4 wk. Twenty-four h after the last administration, rats were challenged with D-galactosamine (D-GalN)/lipopolysaccharide (LPS). Results After ultrasonication, the component ratio of ginsenosides Rg2, Rg3, Rh1, Rh4, Rk1, Rk3, and F4 in GBE had been elevated. Administration of UGBE significantly increased the survival rate of D-GalN/LPS-challenged rats. Pretreatment with UGBE significantly decreased serum alanine aminotransferase, aspartate aminotransferase, and total bilirubin levels in D-GalN/LPS-challenged rats in a dose-dependent manner. The levels of enzymatic markers for oxidative stress (superoxide dismutase, glutathione peroxidase, catalase, and glutathione) were increased by UGBE treatment in a dose-dependent manner. Tumor necrosis factor alphalevel, inducible nitric oxide synthase activities, and nitric oxide productions were reduced by UGBE treatment. In addition, hemeoxygenase-1 levels in liver were also significantly increased in the UGBE-treated group. The protein expression of toll-like receptor 4 was decreased by UGBE administration. Hematoxylin and eosin staining results also supported the results of this study showing normal appearance of liver histopathology in the UGBE-treated group. Conclusion UGBE showed a great hepatoprotective effect on D-GalN/LPS-challenged rats via the toll-like receptor 4 signaling pathway.
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Effect of polysaccharides from a Korean ginseng berry on the immunosenescence of aged mice. J Ginseng Res 2017; 42:447-454. [PMID: 30337804 PMCID: PMC6187098 DOI: 10.1016/j.jgr.2017.04.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/18/2017] [Accepted: 04/28/2017] [Indexed: 12/11/2022] Open
Abstract
Background Korean ginseng has been widely evaluated to treat human diseases; however, most studies on Korean ginseng have focused on its root. In this study, polysaccharides [acidic-polysaccharide-linked glycopeptide (APGP) extracted with 90% ethanol and hot water] were prepared from Korean ginseng berries, and their effect on immunosenescence was explored. Methods The effect of APGP on thymic involution was evaluated by measuring the size of thymi dissected from aged mice. The effect of APGP on populations of immune cells, including natural killer (NK) cells, dendritic cells, age-correlated CD11c-positive B cells, and several subtypes of T cells [CD4-positive, CD8-positive, and regulatory (Treg) T cells] in the thymi and spleens of aged mice was analyzed by fluorescence-activated cell sorting analysis. Serum levels of interleukin (IL)-2 and IL-6 were evaluated by enzyme-linked immunosorbent assay analysis. Profiles of APGP components were evaluated by high-performance liquid chromatography (HPLC) analysis. Results APGP suppressed thymic involution by increasing the weight and areas of thymi in aged mice. APGP increased the population of NK cells, but showed no effect on the population of dendritic cells in the thymi and spleens of aged mice. APGP decreased the population of age-correlated CD11c-positive B cells in the spleens of aged mice. APGP showed no effect on the populations of CD4- and CD8-positive T cells in the thymi of aged mice, whereas it increased the population of Treg cells in the spleens of aged mice. APGP further decreased the reduced serum levels of IL-2 in aged mice, but serum levels of IL-6 were not statistically changed by APGP in aged mice. Finally, HPLC analysis showed that APGP had one major peak at 15 min (a main type of polysaccharide) and a long tail up to 35 min (a mixture of a variety of types of polysaccharides). Conclusion These results suggested that APGP exerted an anti-immunosenescent effect by suppressing thymic involution and modulating several types of immune cells.
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Hyun TK, Jang KI. Are berries useless by-products of ginseng? Recent research on the potential health benefits of ginseng berry. EXCLI JOURNAL 2017; 16:780-784. [PMID: 28827994 PMCID: PMC5547390 DOI: 10.17179/excli2017-376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 05/17/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Tae Kyung Hyun
- Department of Industrial Plant Science and Technology, College of Agricultural, Life and Environmental Sciences, Chungbuk National University, Cheongju 28644, Republic of Korea
| | - Keum-Il Jang
- Department of Food Science and Biotechnology, College of Agricultural, Life and Environmental Sciences, Chungbuk National University, Cheongju 28644, Republic of Korea
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Park JG, Son YJ, Aravinthan A, Kim JH, Cho JY. Korean Red Ginseng water extract arrests growth of xenografted lymphoma cells. J Ginseng Res 2016; 40:431-436. [PMID: 27746697 PMCID: PMC5052435 DOI: 10.1016/j.jgr.2016.07.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 07/21/2016] [Accepted: 07/22/2016] [Indexed: 11/27/2022] Open
Abstract
Background Although numerous studies of the anticancer activities of Korean Red Ginseng (KRG) have been performed, the therapeutic effect of KRG on leukemia has not been fully elucidated. In this study, we investigated the antileukemia activities of KRG and its cellular and molecular mechanisms. Methods An established leukemia tumor model induced by xenografted T cell lymphoma (RMA cells) was used to test the therapeutic activity of KRG water extract (KRG-WE). Direct cytotoxic activity of KRG-WE was confirmed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The immunomodulatory activities of KRG-WE were verified by immunohistochemistry, nitric oxide production assay. The inhibitory effect of KRG-WE on cell survival signaling was also examined. Results Orally administered KRG-WE reduced the sizes of tumor masses. Levels of apoptosis regulatory enzymes and cleaved forms of caspases-3 and -8 were increased by this extract. In addition, expression of matrix metalloproteinase-9, a metastasis regulatory enzyme, was decreased by KRG-WE treatment. The proportion of CD11c+ cells was remarkably increased in the KRG-treated group compared to the control group. However, KRG-WE did not show significant direct cytotoxicity against RMA cells. Conclusion Our results strongly suggest that the KRG might have antileukemia activity through CD11c+ cell-mediated antitumor immunity.
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Affiliation(s)
- Jae Gwang Park
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
| | - Young-Jin Son
- Department of Pharmacy, Sunchon National University, Suncheon, Korea
| | - Adithan Aravinthan
- Department of Physiology, College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Jong-Hoon Kim
- Department of Physiology, College of Veterinary Medicine, Chonbuk National University, Iksan, Korea
| | - Jae Youl Cho
- Department of Genetic Engineering, Sungkyunkwan University, Suwon, Korea
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