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Zhang J, Guo L, Zhang Q, Liu K, Dong Z. Aloe emodin suppresses EGF‑induced neoplastic cell transformation by inhibiting the ERK/MSK1 and AKT/GSK3β signaling pathways. Mol Med Rep 2018; 18:5215-5220. [PMID: 30272294 DOI: 10.3892/mmr.2018.9517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 11/06/2017] [Indexed: 11/06/2022] Open
Abstract
Natural compounds which can block cell transformation due to potential for chemoprevention have received increased attention. The present study aimed to investigate whether aloe emodin, which is present in aloe latex or the roots of the Rheum palmatum L. are able to block epidermal growth factor (EGF)‑ and tissue plasminogen activator‑induced JB6 C141 cell transformation. The aloe emodin treatment was applied to the JB6 C141 cell neoplastic model. The toxicity of aloe emodin was determined. The present study detected the expression level of AKT serine/threonine kinase 1 (AKT), lysine‑tRNA ligase MSK1 (MSK1) and cyclin D1 using western blotting. The cell proliferation and cell cycle distribution were also monitored. And when 95‑maximal effective dose ranged between 1 and 15 µM, the cell death was evident. Aloe emodin‑treated cells had an impaired anchorage‑independent growth capability, leading to a dose‑dependent reduction of colony formation. Western blotting revealed that aloe emodin had a significant effect on phosphorylation of pyruvate dehydrogenase kinase 1 and glycogen synthase kinase 3β (GSK3β) and AKT was inhibited. The present study determined that the proliferation of JB6 C141 cells was reduced in a dose‑dependent manner and the effect may be associated with its inhibition of the G1/S cell cycle transition. Cyclin D1 transcriptional activity was reduced to 25%, 24 h following aloe emodin treatment. The protein expression of cyclin D1 was inhibited. The findings of the present study indicated that aloe emodin may be able to suppress neoplastic cell transformation by inhibiting the extracellular‑signal regulated kinase/MSK1 and AKT/GSK3β signaling pathways. It may be a potential natural compound for chemoprevention.
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Affiliation(s)
- Juan Zhang
- Department of Pathology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Lihua Guo
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Quanwu Zhang
- Department of Pathology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Kangdong Liu
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Ziming Dong
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Lepidiumuridine A: A New Natural Uridine Derivative as a Phytoestrogen Isolated from the Seeds of Lepidium apetalum Willd. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:2813465. [PMID: 30254685 PMCID: PMC6142764 DOI: 10.1155/2018/2813465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 08/07/2018] [Indexed: 11/18/2022]
Abstract
There has been great interest in phytoestrogens, which are polyhydric compounds that are derived from plants and have a structure similar to that of the mammalian steroid hormone 17β-estradiol. The present study examined the estrogenic effects of a new natural uridine derivative, lepidiumuridine A (LA), that was isolated from the seeds of Lepidium apetalum. The structure was clarified and determined via analysis of extensive spectroscopic data interpretation. The activity of LA was investigated by measuring the levels of estradiol (E2), luteinizing hormone (LH), follicle stimulating hormone (FSH), and the uterus growth in mice. The proliferation experiment of MCF-7 breast cancer cells was also conducted. Western blot, in-cell western, and antagonist assays with methyl piperidino-pyrazole (MPP) were used for exploring the mechanism of the effects of LA. The results showed that LA elevated the uterine coefficient, the levels of E2, and FSH significantly. In addition, LA significantly elevated ERα expression in the uterus and MCF-7 cells. MPP inhibited the proliferation of LA-stimulated MCF-7 cell and ERα expression in MCF-7 cells. Taken together, LA had an estrogen-like effect, which was mainly mediated by the estrogen receptor ERα.
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53
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Shi GH, Zhou L. Emodin suppresses angiogenesis and metastasis in anaplastic thyroid cancer by affecting TRAF6‑mediated pathways in vivo and in vitro. Mol Med Rep 2018; 18:5191-5197. [PMID: 30272291 DOI: 10.3892/mmr.2018.9510] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 10/10/2017] [Indexed: 11/06/2022] Open
Abstract
Emodin has been recognized to be an anti‑cancer agent against a number of types of human cancer. It was demonstrated that TNF receptor‑associated factor 6 (TRAF6) was correlated with cancer angiogenesis and metastasis. The present study confirmed the association between TRAF6 and the angiogenesis/metastasis of anaplastic thyroid cancer (ATC). The anti‑angiogenesis and metastatic effects of emodin, in addition to its molecular mechanisms in ATC, were investigated. A total of two ATC cell lines, namely 8505c and SW1736, were studied. ATC cells were implanted into nude mice to form xenografts or to establish lung metastasis models. Emodin was used to incubate ATC cells or to treat animals orally. An MTT assay was used to assess cell proliferation. A wound healing assay was employed to evaluate cell migration. ELISA analysis was used to detect the vascular endothelial growth factor (VEGF) content. Western blotting was used to determine the protein expression levels. In the in vivo study, cancer angiogenesis was assessed by micro vascular density measurement. The lung metastatic rate was the criterion for cancer metastasis. The results of the present study demonstrated that the proliferation of ATC was inhibited by emodin. The activation of the TRAF6/hypoxia inducible factor (HIF)‑1α/VEGF and TRAF6/basigin (CD147)/matrix metalloproteinase‑9 (MMP9) pathways were associated with the angiogenesis and metastasis of ATC. In a concentration‑dependent manner, emodin inhibited the TRAF6/HIF‑1α/VEGF and TRAF6/CD147/MMP9 signaling pathways to suppress angiogenesis and metastasis. In conclusion, emodin exerted anti‑angiogenic and anti‑metastatic activities in ATC by affecting TRAF6‑mediated pathways.
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Affiliation(s)
- Guo-Hua Shi
- Department of Nuclear Medicine, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Lin Zhou
- Department of Minimally Invasive Surgery, Zhejiang Chinese Medicine and Western Medicine Integrated Hospital, Hangzhou, Zhejiang 310016, P.R. China
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Affiliation(s)
- Yan Gao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Kit Ieng Kuok
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Ying Jin
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
| | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China
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55
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Cheng C, Dong W. Aloe-Emodin Induces Endoplasmic Reticulum Stress-Dependent Apoptosis in Colorectal Cancer Cells. Med Sci Monit 2018; 24:6331-6339. [PMID: 30199885 PMCID: PMC6142869 DOI: 10.12659/msm.908400] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Recently, colorectal cancer has become a more common type of tumor in the world. Research has reported that several kinds of single compounds of Chinese herbs have shown anti-tumor activity in colorectal cancer. Aloe-emodin (AE), a natural compound extract from Aloe Vera, has been discovered to suppress cell proliferation and accelerate apoptosis in a variety of tumor cells. Whether AE exerts an effect on colorectal cancer cells has not yet been investigated. MATERIAL AND METHODS In this study, we examined the impact of AE on SW620 and HT29 colorectal cancer cell lines. After treatment with various concentrations of AE (10, 20, and 40 μM), cell proliferation, cell apoptosis, reactive oxygen species (ROS) generation, cytosolic calcium level, and related gene expression were analyzed. RESULTS Our results indicated that AE suppressed cell viability and induced cell apoptosis in SW620 and HT29 cell lines. Furthermore, both cell lines when exposed to AE generated ROS, which induces endoplasmic reticulum (ER) stress. We then detected the expression of ER stress-related proteins and cytosolic calcium levels. We found that cells exposure to AE had upregulation of unfolded protein response (UPR) proteins like glucose-related protein 78 (GRP78), phosphorylated protein kinase R (PKR)-like ER kinase (p-PERK), phosphorylated eukaryotic initiation factor-2α (p-eIF2α), and transcription factor C/EBP homologous protein (CHOP). Meanwhile, we detected an increased cytosolic calcium content followed by the upregulation of the calpain-1, calpain-2 and caspase-12. CHOP and caspase-12 are important regulatory factors leading to cell apoptosis. CONCLUSIONS AE might serve as a candidate in the treatment of colorectal cancer through inducing ER stress-dependent apoptosis.
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Affiliation(s)
- Chunsheng Cheng
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
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56
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Dong X, Ni B, Fu J, Yin X, You L, Leng X, Liang X, Ni J. Emodin induces apoptosis in human hepatocellular carcinoma HepaRG cells via the mitochondrial caspase‑dependent pathway. Oncol Rep 2018; 40:1985-1993. [PMID: 30106438 PMCID: PMC6111625 DOI: 10.3892/or.2018.6620] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 02/12/2018] [Indexed: 12/17/2022] Open
Abstract
Emodin-induced hepatotoxicity in vivo and in vitro has been gaining increasing attention. However, the exact molecular pathways underlying these effects remain poorly clarified. The aim of the present study was to evaluate the cytotoxic effect of emodin on HepaRG cells and to define the underlying mechanism. The results demonstrated that emodin evidently inhibited HepaRG cell growth in a dose- and time-dependent manner by blocking cell cycle progression in the S and G2/M phase and by inducing apoptosis. Emodin treatment also resulted in generation of reactive oxygen species (ROS), which abrogated mitochondrial membrane potential (MMP). The above effects were all suppressed by antioxidants, such as N-acetylcysteine (NAC). Further studies by western blot analysis howed that emodin upregulated p53, p21, Bax, cyclin E, cleaved caspase-3, 8 and 9, and cleaved poly(ADP-ribose)polymerase (PARP). However, the protein expression of Bcl-2, cyclin A and CDK2 was downregulated. Taken together, our results suggest that emodin induces apoptosis via the mitochondrial apoptosis pathway through cell cycle arrest and ROS generation in HepaRG cells.
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Affiliation(s)
- Xiaoxv Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, P.R. China
| | - Boran Ni
- School of Basic Medical Science, Beijing University of Chinese Medicine, Beijing 100102
| | - Jing Fu
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing 100010
| | - Xingbin Yin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, P.R. China
| | - Longtai You
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, P.R. China
| | - Xin Leng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, P.R. China
| | - Xiao Liang
- Shanghai Binuo Medical Instrument Co., Ltd., Shanghai 200000, P.R. China
| | - Jian Ni
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, P.R. China
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57
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Natural Products for the Management and Prevention of Breast Cancer. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:8324696. [PMID: 29681985 PMCID: PMC5846366 DOI: 10.1155/2018/8324696] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 12/18/2017] [Accepted: 01/16/2018] [Indexed: 12/21/2022]
Abstract
Among all types of cancer, breast cancer is one of the most challenging diseases, which is responsible for a large number of cancer related deaths. Hormonal therapy, surgery, chemotherapy, and radiotherapy have been used as treatment of breast cancer, for a very long time. Due to severe side effects and multidrug resistance, these treatment approaches become increasingly ineffective. However, adoption of complementary treatment approach can be a big solution for this situation, as it is evident that compounds derived from natural source have a great deal of anticancer activity. Natural compounds can fight against aggressiveness of breast cancer, inhibit cancerous cell proliferation, and modulate cancer related pathways. A large number of research works are now focusing on the natural and dietary compounds and trying to find out new and more effective treatment strategies for the breast cancer patients. In this review, we discussed some significant natural chemical compounds with their mechanisms of actions, which can be very effective against the breast cancer and can be more potent by their proper modifications and further clinical research. Future research focusing on the natural anti-breast-cancer agents can open a new horizon in breast cancer treatment, which will play a great role in enhancing the survival rate of breast cancer patients.
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58
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Huang PH, Chen MC, Peng YT, Kao WH, Chang CH, Wang YC, Lai CH, Hsieh JT, Wang JH, Lee YT, Lin E, Yue CH, Wang HY, You SC, Lin H. Cdk5 Directly Targets Nuclear p21CIP1 and Promotes Cancer Cell Growth. Cancer Res 2017; 76:6888-6900. [PMID: 27909065 DOI: 10.1158/0008-5472.can-15-3253] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 08/03/2016] [Accepted: 09/09/2016] [Indexed: 11/16/2022]
Abstract
The significance of Cdk5 in cell-cycle control and cancer biology has gained increased attention. Here we report the inverse correlation between the protein levels of Cdk5 and p21CIP1 from cell-based and clinical analysis. Mechanistically, we identify that Cdk5 overexpression triggers the proteasome-dependent degradation of p21CIP1 through a S130 phosphorylation in a Cdk2-independent manner. Besides, the evidence from cell-based and clinical analysis shows that Cdk5 primarily regulates nuclear p21CIP1 protein degradation. S130A-p21CIP1 mutant enables to block either its protein degradation or the increase of cancer cell growth caused by Cdk5. Notably, Cdk5-triggered p21CIP1 targeting primarily appears in S-phase, while Cdk5 overexpression increases the activation of Cdk2 and its interaction with DNA polymerase δ. The in vivo results show that Cdk2 might play an important role in the downstream signaling to Cdk5. In summary, these findings suggest that Cdk5 in a high expression status promotes cancer growth by directly and rapidly releasing p21CIP1-dependent cell-cycle inhibition and subsequent Cdk2 activation, which illustrates an oncogenic role of Cdk5 potentially applied for future diagnosis and therapy. Cancer Res; 76(23); 6888-900. ©2016 AACR.
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Affiliation(s)
- Pao-Hsuan Huang
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Mei-Chih Chen
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Yu-Ting Peng
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Wei-Hsiang Kao
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Chih-Hsiang Chang
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Yun-Chi Wang
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Chih-Ho Lai
- Department of Microbiology and Immunology, Chang Gung University, Taoyuan, Taiwan
| | - Jer-Tsong Hsieh
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Jo-Hsin Wang
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Yueh-Tsung Lee
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Department of Surgery, Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan
| | - Eugene Lin
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Department of Urology, Chang Bing Show Chwan Memorial Hospital, Changhua, Taiwan
| | - Chia-Herng Yue
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Department of Surgery, Tung's Taichung MetroHarbor Hospital, Taichung, Taiwan
| | - Hsin-Yi Wang
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan.,Department of Nuclear Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Shuen-Chi You
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Ho Lin
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan. .,Department of Biotechnology, Asia University, Taichung, Taiwan.,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan
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Gruber-Dorninger C, Novak B, Nagl V, Berthiller F. Emerging Mycotoxins: Beyond Traditionally Determined Food Contaminants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7052-7070. [PMID: 27599910 DOI: 10.1021/acs.jafc.6b03413] [Citation(s) in RCA: 223] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Modern analytical techniques can determine a multitude of fungal metabolites contaminating food and feed. In addition to known mycotoxins, for which maximum levels in food are enforced, also currently unregulated, so-called "emerging mycotoxins" were shown to occur frequently in agricultural products. The aim of this review is to critically discuss the relevance of selected emerging mycotoxins to food and feed safety. Acute and chronic toxicity as well as occurrence data are presented for enniatins, beauvericin, moniliformin, fusaproliferin, fusaric acid, culmorin, butenolide, sterigmatocystin, emodin, mycophenolic acid, alternariol, alternariol monomethyl ether, and tenuazonic acid. By far not all of the detected compounds are toxicologically relevant at their naturally occurring levels and are therefore of little or no health concern to consumers. Still, gaps in knowledge have been identified for several compounds. These gaps should be closed by the scientific community in the coming years to allow a proper risk assessment.
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Affiliation(s)
| | - Barbara Novak
- BIOMIN Research Center , Technopark 1, 3430 Tulln, Austria
| | - Veronika Nagl
- BIOMIN Research Center , Technopark 1, 3430 Tulln, Austria
| | - Franz Berthiller
- Christian Doppler Laboratory for Mycotoxin Metabolism and Center for Analytical Chemistry, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU) , Konrad-Lorenz-Strasse 20, 3430 Tulln, Austria
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60
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Aloe-emodin (AE) nanoparticles suppresses proliferation and induces apoptosis in human lung squamous carcinoma via ROS generation in vitro and in vivo. Biochem Biophys Res Commun 2017. [PMID: 28629998 DOI: 10.1016/j.bbrc.2017.06.084] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Human lung squamous cell carcinoma is a deadly cancer for which present therapeutic strategies are inadequate. And traditional chemotherapy results in severe systemic toxicity. Compounds from living organisms often exert a biological activity, triggering several targets, which may be useful for the improvement of novel pharmaceuticals. Aloe-emodin (AE), a well-known natural compound, is a primary component of anthraquinones in Aloe vera and exhibits anti-proliferative and apoptotic effects on various tumor cells. However, the translational and clinical use of AE has been limited owing to its rapid degradation and poor bioavailability. To improve its efficacy, a poly (lactic-co-glycolic acid) based AE nanoparticle formulation (NanoAE) was prepared. Our study indicated that compared to the free AE, nanoAE significantly suppressed cancer cell proliferation, induced cell cycle arrest and apoptosis, evidenced by high cleavage of Caspase-3, poly (ADP-ribose) polymerase (PARP), Caspase-8 and Caspase-9. NanoAE enhanced reactive oxygen species (ROS) production, along with Mitogen-activated protein kinases (MAPKs) activation and PI3K/AKT inactivation. Cell proliferation, apoptosis and MAPKs and PI3K/AKT were dependent on ROS production in nanoAE-treated groups. In vivo, nanoAE exhibited inhibitory effects on the tumor growth with little toxicity. Together, our results indicated that nanoAE might be an effective treatment for human lung squamous cell carcinoma.
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61
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Zhao Z, Xie J, Liu B, Ge X, Song C, Ren M, Zhou Q, Miao L, Zhang H, Shan F, Yang Z. The effects of emodin on cell viability, respiratory burst and gene expression of Nrf2-Keap1 signaling molecules in the peripheral blood leukocytes of blunt snout bream (Megalobrama amblycephala). FISH & SHELLFISH IMMUNOLOGY 2017; 62:75-85. [PMID: 28065629 DOI: 10.1016/j.fsi.2017.01.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 12/28/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
We determined the effects of emodin on the cell viability, respiratory burst activity, mRNA levels of antioxidative enzymes (Cu-Zn SOD, CAT and NOX2), and gene expressions of the Nrf2-Keap1 signaling molecules in the peripheral blood leukocytes of blunt snout bream. Triplicate groups of cultured cells were treated with different concentrations of emodin (0.04-25 μg/ml) for 24 h. Results showed that the emodin caused a dramatic loss in cell viability, and occurred in a dose-dependent manner. Emodin exposure (1-25 μg/ml) were significantly induced the ROS generation compared to the control. The respiratory burst and NADPH oxidase activities were significantly induced at a concentration of 0.20 μg/ml, and inhibited at 25 μg/ml. Besides, mRNA levels of antioxidant enzyme genes were dramatically regulated by emodin exposure for 24 h. During low concentrations of exposure, mRNA levels of Cu-Zn SOD in the cells treated with 0.04, 0.20 μg/ml, CAT, NOX2 and Nrf2 in the cells treated with 1 μg/ml were sharply increased, respectively. Whereas, high concentrations were dramatically down-regulated the gene expressions of CAT in the cells treated with 5, 25 μg/ml and NOX2 in the cells treated with 25 μg/ml. Furthermore, sharp increase in Keap1and Bach1 expression levels were observed a dose-dependent manner. In conclusion, this study demonstrated that emodin could induce antioxidant defenses which were involved in cytotoxic activities, respiratory burst and the transcriptional regulation levels of antioxidant enzymes and Nrf2-Keap1 signaling molecules.
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Affiliation(s)
- Zhenxin Zhao
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China.
| | - Jun Xie
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Bo Liu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
| | - Xianping Ge
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China; Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China.
| | - Changyou Song
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Mingchun Ren
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Qunlan Zhou
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Linghong Miao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China
| | - Huimin Zhang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Fan Shan
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Zhenfei Yang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
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Tseng HS, Wang YF, Tzeng YM, Chen DR, Liao YF, Chiu HY, Hsieh WT. Aloe-Emodin Enhances Tamoxifen Cytotoxicity by Suppressing Ras/ERK and PI3K/mTOR in Breast Cancer Cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2017; 45:337-350. [PMID: 28231748 DOI: 10.1142/s0192415x17500215] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Aloe-emodin (AE) is derived from Aloe vera and rhubarb (Rheum palmatum) and exhibits anticancer activities via multiple regulatory mechanisms in various cancers. AE can also enhance the anticancer efficacy of cisplatin, doxorubicin, docetaxel, and 5-fluorouracil; however, its effects remain poorly characterized. MCF-7, MDA-MB-231, MDA-MB-468, BT-474, and HCC-1954 breast cancer cell lines were treated with the indicated conditions of AE, and cell viability assays were performed. The expression levels of signaling proteins were determined by western blot analysis, intracellular reactive oxygen species (ROS), cell cycle distributions, and rates of apoptosis as estimated by flow cytometry. In comparison with other cells, MCF-7 cells were more sensitive to AE treatment; AE enhanced the cytotoxicity of 9[Formula: see text][Formula: see text]g/ml tamoxifen by reducing EGFR, ER[Formula: see text], Ras, ERK, c-Myc, and mTOR protein expression and blocking PI3K and mTOR activation. Finally, although co-treatment of AE with tamoxifen increased intracellular ROS, there were no effects on cell cycle progression. Besides facilitating tamoxifen-induced cell death, AE also enhanced the antiproliferative activity of tamoxifen by blocking Ras/ERK and PI3K/mTOR pathways in breast cancer cells, thus demonstrating the chemosensitizing potential of AE.
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Affiliation(s)
- Hsin-Shun Tseng
- * Comprehensive Breast Cancer Center, Changhua Christian Hospital, Changhua, Taiwan.,‡ Department of Applied Chemistry, Chaoyang University of Technology, Taichung, Taiwan
| | - Yu-Fen Wang
- † Cancer Research Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Yew-Min Tzeng
- ‡ Department of Applied Chemistry, Chaoyang University of Technology, Taichung, Taiwan.,¶ Department of Life Science, National Taitung University, Taitung, Taiwan.,∥ Center for General Education, National Taitung University, Taitung, Taiwan
| | - Dar-Ren Chen
- * Comprehensive Breast Cancer Center, Changhua Christian Hospital, Changhua, Taiwan.,† Cancer Research Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Ya-Fan Liao
- ‡ Department of Applied Chemistry, Chaoyang University of Technology, Taichung, Taiwan.,§ Asia Mycotoxin Analysis Center, Chaoyang University of Technology, Taichung, Taiwan
| | - Hui-Yu Chiu
- * Comprehensive Breast Cancer Center, Changhua Christian Hospital, Changhua, Taiwan.,** School of Nursing, Chung Shan Medical University, Taichung, Taiwan
| | - Wen-Tsong Hsieh
- †† Department of Pharmacology, China Medical University, Taichung, Taiwan
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Manimaran A, Manoharan S, Neelakandan M. EMODIN EFFICACY ON THE AKT, MAPK, ERK AND DNMT EXPRESSION PATTERN DURING DMBA-INDUCED ORAL CARCINOMA IN GOLDEN SYRIAN HAMSTERS. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES 2016; 13:186-193. [PMID: 28480378 PMCID: PMC5412193 DOI: 10.21010/ajtcam.v13i6.27] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Background: The present study has evaluated the Emodin efficacy on the Akt, MAPK, ERK and DNMT expression pattern during 7,12-dimethylbenz[a]anthracene (DMBA)-induced oral carcinoma in golden Syrian hamsters, in order to explore its antitumor potential. Materials and methods: Oral tumors were developed in the buccal pouches of golden Syrian hamsters using the carcinogen, DMBA. Results: While the incidence of tumor formation was 100% in hamsters treated with DMBA alone, the tumor formation was not noticed in DMBA+ Emodin treated hamsters. Also, Emodin reduced the severity of precancerous pathological lesions such as dysplasia, in the hamsters treated with DMBA. Emodin administration corrected the abnormalities in the expression pattern of Akt, MAPK, ERK and DNMT in the buccal mucosa of hamsters treated with DMBA. Conclusions: The present study thus suggests that the tumor preventive potential of Emodin is partly related to its modulating effect on the Akt, MAPK, ERK and DNMT expression pattern, as these molecular markers have a pivotal role in the process of cell proliferation, inflammation, invasion, and apoptosis.
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Affiliation(s)
- Asokan Manimaran
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar - 608002, Tamilnadu, India
| | - Shanmugam Manoharan
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar - 608002, Tamilnadu, India
| | - Mani Neelakandan
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar - 608002, Tamilnadu, India
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Dong X, Fu J, Yin X, Cao S, Li X, Lin L, Ni J. Emodin: A Review of its Pharmacology, Toxicity and Pharmacokinetics. Phytother Res 2016; 30:1207-18. [PMID: 27188216 PMCID: PMC7168079 DOI: 10.1002/ptr.5631] [Citation(s) in RCA: 436] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 03/17/2016] [Accepted: 04/02/2016] [Indexed: 12/12/2022]
Abstract
Emodin is a natural anthraquinone derivative that occurs in many widely used Chinese medicinal herbs, such as Rheum palmatum, Polygonum cuspidatum and Polygonum multiflorum. Emodin has been used as a traditional Chinese medicine for over 2000 years and is still present in various herbal preparations. Emerging evidence indicates that emodin possesses a wide spectrum of pharmacological properties, including anticancer, hepatoprotective, antiinflammatory, antioxidant and antimicrobial activities. However, emodin could also lead to hepatotoxicity, kidney toxicity and reproductive toxicity, particularly in high doses and with long-term use. Pharmacokinetic studies have demonstrated that emodin has poor oral bioavailability in rats because of its extensive glucuronidation. This review aims to comprehensively summarize the pharmacology, toxicity and pharmacokinetics of emodin reported to date with an emphasis on its biological properties and mechanisms of action. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Xiaoxv Dong
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Jing Fu
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Xingbin Yin
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Sali Cao
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Xuechun Li
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Longfei Lin
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
| | - Huyiligeqi
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
- Affiliated Hospital, Inner Mongolia University for NationalitiesTongliao028000PR China
| | - Jian Ni
- School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing100102PR China
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Yan L, Hu R, Tu S, Cheng WJ, Zheng Q, Wang JW, Kan WS, Ren YJ. Emodin mitigates the oxidative stress induced by cisplatin in osteosarcoma MG63 cells. Oncol Lett 2016; 12:1981-1985. [PMID: 27602124 DOI: 10.3892/ol.2016.4902] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 10/12/2015] [Indexed: 12/15/2022] Open
Abstract
Previously, the application of cisplatin in chemotherapy was limited due to the significant side effects on normal cell growth. In the present study, the concomitant application of emodin with cisplatin was demonstrated to ameliorate cisplatin-induced oxidative stress and markedly suppress tumor cell proliferation for the first time. Human osteosarcoma MG-63 cells were treated with cisplatin alone or in combination with emodin. The cell viability was determined by MTS assays and the augmentation of reactive oxygen species were determined by fluorogenic probes; in addition, a stable MG-63 subline bearing antioxidant response element (ARE)-driven luciferase expression was developed to monitor the activation of the nuclear factor erythroid 2-related factor 2 (Nrf2)-ARE signaling pathway. The results indicated that cisplatin or emodin may inhibit MG-63 cell proliferation in a time- or dose-dependent manner, respectively. Concomitant treatment with cisplatin and emodin demonstrated synergic anti-tumor effects. Cisplatin augmented reactive oxygen species in the MG-63 cells, followed by the translocation of Nrf2 from the cytoplasm into the nucleus, which triggered ARE-driven luciferase expression. The addition of emodin diminished the previously described phenomenon, resulting in decreased ROS augmentation, translocation of Nrf2 and ARE-driven luciferase activity. In conclusion, emodin could ameliorate cisplatin-induced oxidative stress and protect the cells from oxidative stress-induced damage. The findings of the present study provide a novel strategy for the treatment of osteosarcoma using emodin and cisplatin.
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Affiliation(s)
- Li Yan
- Department of Reparative and Reconstructive Surgery of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430033, P.R. China
| | - Rui Hu
- Department of Reparative and Reconstructive Surgery of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430033, P.R. China
| | - Song Tu
- Department of Reparative and Reconstructive Surgery of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430033, P.R. China
| | - Wen-Jun Cheng
- Department of Reparative and Reconstructive Surgery of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430033, P.R. China
| | - Qiong Zheng
- Department of Reparative and Reconstructive Surgery of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430033, P.R. China
| | - Jun-Wen Wang
- Department of Reparative and Reconstructive Surgery of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430033, P.R. China
| | - Wu-Sheng Kan
- Department of Reparative and Reconstructive Surgery of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430033, P.R. China
| | - Yi-Jun Ren
- Department of Reparative and Reconstructive Surgery of Orthopedics, Puai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430033, P.R. China
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Kiyama R, Wada-Kiyama Y. Estrogenic endocrine disruptors: Molecular mechanisms of action. ENVIRONMENT INTERNATIONAL 2015; 83:11-40. [PMID: 26073844 DOI: 10.1016/j.envint.2015.05.012] [Citation(s) in RCA: 178] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 05/26/2015] [Accepted: 05/27/2015] [Indexed: 05/20/2023]
Abstract
A comprehensive summary of more than 450 estrogenic chemicals including estrogenic endocrine disruptors is provided here to understand the complex and profound impact of estrogen action. First, estrogenic chemicals are categorized by structure as well as their applications, usage and effects. Second, estrogenic signaling is examined by the molecular mechanism based on the receptors, signaling pathways, crosstalk/bypassing and autocrine/paracrine/homeostatic networks involved in the signaling. Third, evaluation of estrogen action is discussed by focusing on the technologies and protocols of the assays for assessing estrogenicity. Understanding the molecular mechanisms of estrogen action is important to assess the action of endocrine disruptors and will be used for risk management based on pathway-based toxicity testing.
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Affiliation(s)
- Ryoiti Kiyama
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan.
| | - Yuko Wada-Kiyama
- Department of Physiology, Nippon Medical School, Bunkyo-ku, Tokyo 113-8602, Japan
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Rahmani AH, Aldebasi YH, Srikar S, Khan AA, Aly SM. Aloe vera: Potential candidate in health management via modulation of biological activities. Pharmacogn Rev 2015; 9:120-6. [PMID: 26392709 PMCID: PMC4557234 DOI: 10.4103/0973-7847.162118] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 12/10/2014] [Accepted: 08/04/2015] [Indexed: 12/14/2022] Open
Abstract
Treatment based on natural products is rapidly increasing worldwide due to the affordability and fewer side effects of such treatment. Various plants and the products derived from them are commonly used in primary health treatment, and they play a pivotal role in the treatment of diseases via modulation of biochemical and molecular pathways. Aloe vera, a succulent species, produces gel and latex, plays a therapeutic role in health management through antioxidant, antitumor, and anti-inflammatory activities, and also offers a suitable alternative approach for the treatment of various types of diseases. In this review, we summarize the possible mechanism of action and the therapeutic implications of Aloe vera in health maintenance based on its modulation of various biological activities.
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Affiliation(s)
- Arshad H Rahmani
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia
| | - Yousef H Aldebasi
- Department of Optometry, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia
| | - Sauda Srikar
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia
| | - Amjad A Khan
- Department of Basic Health Sciences, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia
| | - Salah M Aly
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraidah, Saudi Arabia ; Department of Pathology, Suez Canal University, Ismailia, Egypt
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Yang C, Wang S, Guo X, Sun J, Liu L, Wu L. Simultaneous determination of seven anthraquinones in rat plasma by Ultra High Performance Liquid Chromatography-tandem Mass Spectrometry and pharmacokinetic study after oral administration of Semen Cassiae extract. JOURNAL OF ETHNOPHARMACOLOGY 2015; 169:305-313. [PMID: 25907980 DOI: 10.1016/j.jep.2015.04.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 03/17/2015] [Accepted: 04/10/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Semen Cassiae, called Juemingzi in China, is the seed of the annual Cassia obtusifolia L., of the leguminosae family. It has been used as healthy drinks to alleviate constipation and improve eyesight for many years in China. AIM OF THE STUDY A simple sensitive UHPLC-MS/MS method has been developed and validated for the simultaneous determination and pharmacokinetic study of chrysophanol, emodin, aloe-emodin, rhein, physcion, obtusifolin and aurantio-obtusin in rat plasma. MATERIALS AND METHODS Chromatographic separation was accomplished on a C18 column with a 5min gradient elution. A tandem mass spectrometric detection was conducted using multiple reaction monitoring (MRM) via an electrospray ionization (ESI) source and operating in the negative ionization mode. The samples were prepared by LLE with ethyl acetate after being spiked with an internal standard (butylparaben). RESULTS The current UHPLC-MS/MS assay was validated for linearity, intra-day and inter-day precisions, accuracy, extraction recovery and stability. The method was linear for all analytes over investigated range with all correlation coefficients greater than 0.9900. The lower limit of quantification (LLOQ) of each analyte was lower than 5ng/mL. Intra-day and inter-day precisions were less than 14.99%. The relative errors of accuracies were in the range of -14.60% to 5.11%. The mean recoveries and matrix effects of anthraquinones were higher than 65.54% and 93.26%, respectively. After oral administration 1.25g/kg of Semen Cassiae extract, the maximum plasma concentration (Cmax) was 1189.25±333.40ng/mL for chrysophanol, 38.48±3.15ng/mL for emodin, 79.20±34.76ng/mL for aloe-emodin, 152.70±23.91ng/mL for rhein, 461.85±266.77ng/mL for physcion, 243.59±22.71ng/mL for obtusifolin and 1950.44±638.86ng/mL for aurantio-obtusin, respectively. The time to reach the maximum plasma concentration (Tmax) was 0.333±0.071h for chrysophanol, 0.333±0.059h for emodin, 0.333±0.009h for aloe-emodin, 0.333±0.09h for rhein, 0.167±0.002h for physcion, 0.5±0.074h for obtusifolin and 0.333±0.06h for aurantio-obtusin, respectively. CONCLUSION The proposed method was further applied to investigate the pharmacokinetics of seven anthraquinones after oral administration of Semen Cassia extract to rats.
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Affiliation(s)
- Chunjuan Yang
- College of Pharmacy, Harbin Medical University, 157 Baojian Road, Nangang Distrct., Harbin 150081, PR China
| | - Shuhong Wang
- College of Pharmacy, Harbin Medical University, 157 Baojian Road, Nangang Distrct., Harbin 150081, PR China
| | - Xiaowei Guo
- College of Pharmacy, Harbin Medical University, 157 Baojian Road, Nangang Distrct., Harbin 150081, PR China
| | - Jiahui Sun
- College of Pharmacy, Harbin Medical University, 157 Baojian Road, Nangang Distrct., Harbin 150081, PR China
| | - Lu Liu
- College of Pharmacy, Harbin Medical University, 157 Baojian Road, Nangang Distrct., Harbin 150081, PR China
| | - Lijun Wu
- College of Pharmacy, Harbin Medical University, 157 Baojian Road, Nangang Distrct., Harbin 150081, PR China.
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Tabolacci C, Cordella M, Turcano L, Rossi S, Lentini A, Mariotti S, Nisini R, Sette G, Eramo A, Piredda L, De Maria R, Facchiano F, Beninati S. Aloe-emodin exerts a potent anticancer and immunomodulatory activity on BRAF-mutated human melanoma cells. Eur J Pharmacol 2015; 762:283-92. [PMID: 26048310 DOI: 10.1016/j.ejphar.2015.05.057] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 05/28/2015] [Accepted: 05/29/2015] [Indexed: 12/18/2022]
Abstract
Aim of this study was to extend the knowledge on the antineoplastic effect of aloe-emodin (AE), a natural hydroxyanthraquinone compound, both in metastatic human melanoma cell lines and in primary stem-like cells (melanospheres). Treatment with AE caused reduction of cell proliferation and induction of SK-MEL-28 and A375 cells differentiation, characterized by a marked increase of transamidating activity of transglutaminase whose expression remained unmodified. In vitro antimetastatic property of AE was evaluated by adhesion and Boyden chamber invasion assays. The effect of AE on melanoma cytokines/chemokines production was determined by a multiplex assay: interestingly AE showed an immunomodulatory activity through GM-CSF and IFN-γ production. We report also that AE significantly reduced the proliferation, stemness and invasive potential of melanospheres. Moreover, AE treatment significantly enhanced dabrafenib (a BRAF inhibitor) antiproliferative activity in BRAF mutant cell lines. Our results confirm that AE possesses remarkable antineoplastic properties against melanoma cells, indicating this anthraquinone as a promising agent for differentiation therapy of cancer, or as adjuvant in chemotherapy and targeted therapy. Further, its mechanisms of action support a potential efficacy of AE treatment to counteract resistance of BRAF-mutated melanoma cells to target therapy.
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Affiliation(s)
- Claudio Tabolacci
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy; Department of Biology, University "Tor Vergata", Rome, Italy
| | - Martina Cordella
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Lorenzo Turcano
- Department of Biology, University "Tor Vergata", Rome, Italy
| | - Stefania Rossi
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | | | - Sabrina Mariotti
- Department of Infectious, Parasitic, and Immunomediated Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Roberto Nisini
- Department of Infectious, Parasitic, and Immunomediated Diseases, Istituto Superiore di Sanità, Rome, Italy
| | | | - Adriana Eramo
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Lucia Piredda
- Department of Biology, University "Tor Vergata", Rome, Italy
| | | | - Francesco Facchiano
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy.
| | - Simone Beninati
- Department of Biology, University "Tor Vergata", Rome, Italy
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Radha MH, Laxmipriya NP. Evaluation of biological properties and clinical effectiveness of Aloe vera: A systematic review. J Tradit Complement Med 2014; 5:21-6. [PMID: 26151005 PMCID: PMC4488101 DOI: 10.1016/j.jtcme.2014.10.006] [Citation(s) in RCA: 202] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 07/07/2014] [Accepted: 07/24/2014] [Indexed: 01/01/2023] Open
Abstract
Aloe vera (蘆薈 lú huì) is well known for its considerable medicinal properties. This plant is one of the richest natural sources of health for human beings coming. The chemistry of the plant has revealed the presence of more than 200 different biologically active substances. Many biological properties associated with Aloe species are contributed by inner gel of the leaves. Most research has been centralized on the biological activities of the various species of Aloe, which include antibacterial and antimicrobial activities of the nonvolatile constituents of the leaf gel. Aloe species are widely distributed in the African and the eastern European continents, and are spread almost throughout the world. The genus Aloe has more than 400 species but few, such as A. vera, Aloe ferox, and Aloe arborescens, are globally used for trade. A. vera has various medicinal properties such as antitumor, antiarthritic, antirheumatoid, anticancer, and antidiabetic properties. In addition, A. vera has also been promoted for constipation, gastrointestinal disorders, and for immune system deficiencies. However, not much convincing information is available on properties of the gel. The present review focuses on the detailed composition of Aloe gel, its various phytocomponents having various biological properties that help to improve health and prevent disease conditions.
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Affiliation(s)
- Maharjan H Radha
- Biochemistry Department, Faculty of Science, The M S University of Baroda, Vadodara, Gujarat, India
| | - Nampoothiri P Laxmipriya
- Biochemistry Department, Faculty of Science, The M S University of Baroda, Vadodara, Gujarat, India
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71
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Li J, Chen Y, Chen B, Chen C, Qiu B, Zheng Z, Zheng J, Liu T, Wang W, Hu J. Inhibition of 32Dp210 cells harboring T315I mutation by a novel derivative of emodin correlates with down-regulation of BCR-ABL and its downstream signaling pathways. J Cancer Res Clin Oncol 2014; 141:283-93. [PMID: 25217883 DOI: 10.1007/s00432-014-1820-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 08/29/2014] [Indexed: 01/23/2023]
Abstract
PURPOSE The clinical outcome of chronic myeloid leukemia (CML) patients has been changed dramatically due to the development of imatinib (IM). However, the emergence of IM resistance, commonly associated with point mutations within the BCR-ABL kinase domain, remains a major clinical problem. Here, we investigated the effects of E35, a novel derivative of emodin, on the IM-resistant 32Dp210-T315I cells. METHODS Cell proliferation was measured by 3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyltetrazolium bromide and colony formation assay. Induction of apoptosis was confirmed by DNA fragmentation assay and annexin V/PI staining assay. Real-time quantitative PCR was used to access the BCR-ABL gene expression. Changes of related signaling molecules were detected through Western blot. RESULTS E35 was found to potently inhibit proliferation of 32Dp210-T315I cells with an average IC50 of 2.4 µM at 48 h. Colony formation was almost fully suppressed in 1.0 μM E35 group. DNA fragmentation and annexin V/PI staining assay exhibited the typical DNA fragmentation and the increased proportion of early apoptotic cells, respectively. The induction of apoptosis was associated with increase of Bax to Bcl-2 expression ratio and activation of caspase cascades involving decrease of pro-caspase 9 and pro-caspase 3 and increase of PARP cleavage. The protein expression of P210(BCR-ABL) and p-P210(BCR-ABL) was down-regulated in the presence of E35, although the mRNA levels remained almost unchanged. Moreover, the activation of the P210(BCR-ABL) downstream signaling pathways including CrkL, Akt/mTOR and MEK/ERK was fully suppressed by E35. CONCLUSION Our study indicated that E35 might be a potential antileukemia agent against IM resistance in CML.
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MESH Headings
- Apoptosis/drug effects
- Benzamides/pharmacology
- Blotting, Western
- Cell Proliferation/drug effects
- Colony-Forming Units Assay
- Down-Regulation
- Drug Resistance, Neoplasm/drug effects
- Emodin/chemistry
- Emodin/pharmacology
- Fusion Proteins, bcr-abl/antagonists & inhibitors
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/metabolism
- Humans
- Imatinib Mesylate
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Mutation/genetics
- Piperazines/pharmacology
- Protein Kinase Inhibitors/pharmacology
- Pyrimidines/pharmacology
- RNA, Messenger/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Signal Transduction/drug effects
- Tumor Cells, Cultured
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Affiliation(s)
- Jing Li
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory of Hematology, Fujian Medical University Union Hospital, 29 Xinquan Road, Fuzhou, 350001, Fujian, China
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Pooja T, Karunagaran D. Emodin suppresses Wnt signaling in human colorectal cancer cells SW480 and SW620. Eur J Pharmacol 2014; 742:55-64. [PMID: 25205133 DOI: 10.1016/j.ejphar.2014.08.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 08/16/2014] [Accepted: 08/21/2014] [Indexed: 12/30/2022]
Abstract
Wnt signaling is involved in the regulation of cell proliferation, differentiation and apoptosis. Its aberrant activation is a key event in the pathogenesis and progression of human colorectal cancers. Dietary phytochemicals are gaining importance as chemotherapeutic agents owing to their potential to prevent, delay or reverse oncogenesis. Here we demonstrate that emodin (1,3,8-trihydroxy-6-methylanthraquinone), an anthraquinone present in the roots and bark of several medicinal plants, down regulates Wnt signaling pathway in human colorectal cancer cells (SW480 and SW620) by down regulating TCF/LEF transcriptional activity. Emodin significantly down regulated the expression of key players of Wnt signaling (β-catenin and TCF7L2) and also that of its various downstream targets (cyclin D1, c-Myc, snail, vimentin, MMP-2 and MMP-9). Two novel targets of emodin׳s action were discovered namely Wnt co-activator p300 (down regulated) and repressor HBP1 (up regulated). Morphological changes induced by emodin suggest mesenchymal to epithelial transition accompanied by the increase in E-cadherin expression in human colorectal cancer cells but a differentiation marker (alkaline phosphatase) was activated only in SW620 cells (metastatic origin) and not in SW480 cells (primary tumor-derived). Moreover, our data indicate that reactive oxygen species plays a key role in emodin-mediated down regulation of Wnt signaling as emodin-mediated inhibition of migration and induction of growth arrest were partially rescued by the reactive oxygen species scavenger ascorbic acid. Effects of emodin shown in this study may provide important insights for the use of this anthraquinone as a potential complementary and integrated medicine for the treatment of human colorectal cancer.
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Affiliation(s)
- Thacker Pooja
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Devarajan Karunagaran
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600036, India.
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Yin X, Gong X, Jiang R, Kuang G, Wang B, Zhang L, Xu G, Wan J. Emodin ameliorated lipopolysaccharide-induced fulminant hepatic failure by blockade of TLR4/MD2 complex expression in D-galactosamine-sensitized mice. Int Immunopharmacol 2014; 23:66-72. [PMID: 25173984 DOI: 10.1016/j.intimp.2014.08.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 08/15/2014] [Accepted: 08/18/2014] [Indexed: 12/17/2022]
Abstract
Emodin has been reported to possess anti-inflammatory and anti-oxidant activities. The aim of this study was to explore the effect and mechanism of emodin on lipopolysaccharide (LPS)-induced fulminant hepatic failure (FHF) in D-galactosamine (D-GalN)-sensitized mice. Our results showed that pretreatment with emodin inhibited the elevation of plasma aminotransferases, alleviated the hepatic histopathological abnormalities and improved the survival rate of LPS/D-GalN-primed mice. Moreover, emodin markedly attenuated the increased serum and hepatic tumor necrosis factor-α (TNF-α) production, and activated hepatic p38 mitogen-activated protein kinase (MAPK) and nuclear factor kappa B (NF-κB) signal pathways in LPS/D-GalN-challenged mice. Furthermore, using an in vitro experiment, we found that emodin dose-dependently suppressed TNF-α production, dampened AP-1 and NF-κB activation, and blocked toll-like receptor (TLR) 4/myeloid differentiation factor (MD) 2 complex expression in LPS-elicited RAW264.7 mouse macrophage cells. Taken together, these data suggested that emodin could effectively prevent LPS-induced FHF, which might be mediated by inhibition of TNF-α production, deactivation of MAPKs and NF-κB, and blockade of TLR4/MD2 complex expression.
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Affiliation(s)
- Xinru Yin
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Xia Gong
- Department of Anatamy, Chongqing Medical University, Chongqing 400016, China
| | - Rong Jiang
- Laboratory of Stem Cell and Tissue Engineering, Chongqing Medical University, Chongqing 400016, China
| | - Ge Kuang
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China
| | - Bin Wang
- Department of Anesthesiology, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Li Zhang
- Department of Pathophysiology, Chongqing Medical University, Chongqing 400016, China
| | - Ge Xu
- Department of Orthopaedics, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Jingyuan Wan
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing 400016, China.
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