1
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Zhao Q, Yu M, Li J, Guo Y, Wang Z, Hu K, Xu F, Liu Y, Li L, Wan D, Zhao Y, Shang J, Zhang J. GLUD1 inhibits hepatocellular carcinoma progression via ROS-mediated p38/JNK MAPK pathway activation and mitochondrial apoptosis. Discov Oncol 2024; 15:8. [PMID: 38216781 PMCID: PMC10786780 DOI: 10.1007/s12672-024-00860-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 01/05/2024] [Indexed: 01/14/2024] Open
Abstract
Glutamate dehydrogenase 1 (GLUD1) is an important enzyme in glutamine metabolism. Previously, we found GLUD1 was down-regulated in tumor tissues of hepatocellular carcinoma (HCC) patients by proteomics study. To explore its role in the progression of HCC, the expressional level of GLUD1 was firstly examined and presented as that both the protein and mRNA levels were down-regulated in tumor tissues compared to the normal liver tissues. GLUD1 overexpression significantly inhibited HCC cells proliferation, migration, invasion and tumor growth both in vitro and in vivo, while GLUD1 knocking-down promoted HCC progression. Metabolomics study of GLUD1 overexpressing and control HCC cells showed that 129 differentially expressed metabolites were identified, which mainly included amino acids, bases, and phospholipids. Moreover, metabolites in mitochondrial oxidative phosphorylation system (OXPHOS) were differentially expressed in GLUD1 overexpressing cells. Mechanistic studies showed that GLUD1 overexpression enhanced mitochondrial respiration activity and reactive oxygen species (ROS) production. Excessive ROS lead to mitochondrial apoptosis that was characterized by increased expression levels of p53, Cytochrome C, Bax, Caspase 3 and decreased expression level of Bcl-2. Furthermore, we found that the p38/JNK MAPK pathway was activated in GLUD1 overexpressing cells. N-acetylcysteine (NAC) treatment eliminated cellular ROS and blocked p38/JNK MAPK pathway activation, as well as cell apoptosis induced by GLUD1 overexpression. Taken together, our findings suggest that GLUD1 inhibits HCC progression through regulating cellular metabolism and oxidative stress state, and provide that ROS generation and p38/JNK MAPK pathway activation as promising methods for HCC treatment.
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Affiliation(s)
- Qianwei Zhao
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Mengdan Yu
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
- School of Basic Medical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou, 450052, China
| | - Jinxia Li
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
- School of Basic Medical Sciences, Academy of Medical Science, Zhengzhou University, Zhengzhou, 450052, China
| | - Yaoyu Guo
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
- BGI College, Zhengzhou University, Zhengzhou, 450052, China
| | - Zexuan Wang
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
- BGI College, Zhengzhou University, Zhengzhou, 450052, China
| | - Kefei Hu
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
- BGI College, Zhengzhou University, Zhengzhou, 450052, China
| | - Fang Xu
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Yixian Liu
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Lili Li
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Didi Wan
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Ying Zhao
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China
| | - Jian Shang
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China.
| | - Jintao Zhang
- Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450052, China.
- Henan Key Medical Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou, 450052, China.
- Henan Key Laboratory of Tumor Epidemiology and State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, 450052, China.
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2
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Peng C, Zhang X, Chen Y, Wang L. Toxicity assessment of organophosphate flame retardant triphenyl phosphate (TPHP) on intestines in mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 268:115685. [PMID: 37976930 DOI: 10.1016/j.ecoenv.2023.115685] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 11/05/2023] [Accepted: 11/11/2023] [Indexed: 11/19/2023]
Abstract
Triphenyl phosphate (TPHP), one widely used organophosphate flame retardant, has attracted accumulating attention due to its high detection rate in human biological samples. Up to date, the effects of TPHP exposure on intestinal health remain unexplored. In this study, BALB/c mice were used as a model and exposed to TPHP at dose of 2, 10, or 50 mg/kg body weight for 28 days. We observed Crohn's disease-like features in ileum and ulcerative colitis disease-like features in colon, such as shorter colon length, ileum/colon structure impairment, intestinal epithelial cell apoptosis, enrichment of proinflammatory cytokines and immune cells, and disruption of tight junction. Furthermore, we found that TPHP induced production of reactive oxygen species and apoptosis in intestinal epithelial Caco-2 cells, accompanied by disruption of tight junction between cells. To understand the molecular mechanism underlying TPHP-induced changes in intestines, we build the adverse outcome pathway (AOP) framework based on Comparative Toxicogenomics and GeneCards database. The AOP framework revealed that PI3K/AKT and FoxO signaling pathway might be associated with cellular apoptosis, an increase in ROS production, and increased inflammation response in mouse ileum and colon tissues challenged with TPHP. These results identified that TPHP induced IBD-like features and provided new perspectives for toxicity evaluation of TPHP.
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Affiliation(s)
- Chunyan Peng
- Department of Gastroenterology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210008, Jiangsu, China
| | - Xiaoqi Zhang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210008, Jiangsu, China
| | - Yabing Chen
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing 210093, China.
| | - Lei Wang
- Department of Gastroenterology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210008, Jiangsu, China.
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3
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Wang L, Han X, Li H, Lv C, Wang M. The ethyl acetate extract of Wenxia Changfu Formula inhibits the carcinogenesis of lung adenocarcinoma by regulating PI3K-AKT signaling pathway. Sci Rep 2023; 13:4715. [PMID: 36949111 PMCID: PMC10033682 DOI: 10.1038/s41598-023-31924-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 03/20/2023] [Indexed: 03/24/2023] Open
Abstract
Lung adenocarcinoma is the most common type of lung cancer. With a rise in new cases worldwide each year, early diagnosis and treatment are very important. Network pharmacology provides the effective way to evaluate poly-pharmacological effects and anticancer molecular mechanisms of drugs. The aim of the present study was to explore the anti-tumor mechanism of ethyl acetate extract of Wenxia Changfu Formula (WFEA) in lung adenocarcinoma by using analytical chemistry, network pharmacology and molecular biology. A total of 193 compounds were identified from WFEA, mainly including esters, phenols, ketones and alkaloids. Totally, 374 targets were regarded as potential targets of WFEA against lung adenocarcinoma. Interestingly, PI3K-AKT was found to be one of the significantly enriched signaling pathways of targets of WFEA against lung adenocarcinoma. AKT1, MMP3, CASP3 and BCL2 had strong binding effect with compound molecules of WFEA. Some combinations with the best docking binding were identified, including quercetin/oleanolic_acid/emodin/aloe_emodin/catechin-AKT1 and quercetin-MMP3. In lung adenocarcinoma cells, the WFEA inhibited the proliferation, migration and invasion, and promoted the apoptosis. Moreover, the WFEA inhibited the mRNA expression of MMP3 and Bcl-2 and promoted the mRNA expression of Caspase3. In addition, WFEA inhibited the protein phosphorylation of AKT and PI3K. The WFEA had a significant inhibitory effect on lung adenocarcinoma cells, which could inhibit cell proliferation, invasion and metastasis, and induce cell apoptosis. The mechanism of action of WFEA may be involved in the regulation of the PI3K-AKT signaling pathway in the lung adenocarcinoma.
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Affiliation(s)
- Lei Wang
- Department of Medicine, Jining No. 1 People's Hospital, No. 6 Jiankang Road, Rencheng District, Jining City, 272113, Shandong Province, China
| | - Xiangyu Han
- Emergency Medicine, Jining No. 1 People's Hospital, Jining City, Shandong Province, China
| | - Hui Li
- Department of Medicine, Jining No. 1 People's Hospital, No. 6 Jiankang Road, Rencheng District, Jining City, 272113, Shandong Province, China
| | - Chuanfeng Lv
- Pharmacy Department, Jining No. 1 People's Hospital, Jining City, Shandong Province, China
| | - Meng Wang
- Department of Medicine, Jining No. 1 People's Hospital, No. 6 Jiankang Road, Rencheng District, Jining City, 272113, Shandong Province, China.
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4
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Cao J, Cao J, Wang H, Chen L, Cao F, Su E. Solubility improvement of phytochemicals using (natural) deep eutectic solvents and their bioactivity evaluation. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113997] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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5
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Lu Z, Zhou H, Zhang S, Dai W, Zhang Y, Hong L, Chen F, Cao J. Activation of reactive oxygen species-mediated mitogen-activated protein kinases pathway regulates both extrinsic and intrinsic apoptosis induced by arctigenin in Hep G2. J Pharm Pharmacol 2019; 72:29-43. [PMID: 31617221 DOI: 10.1111/jphp.13180] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/14/2019] [Indexed: 12/28/2022]
Abstract
OBJECTIVES Arctigenin (ARG) has been proved to inhibit the viability of hepatocellular carcinoma (HCC) via inducing apoptosis. However, the precise mechanism remains unknown. The present study was aimed to further investigate the mechanism of ARG against HCC in vitro and in vivo. METHODS Arctigenin was applied in vitro and in vivo. Western blotting, immunohistochemistry, etc., were used to investigate the mechanisms. KEY FINDINGS The time-dependent enhancement of Bax/Bcl-2 ratio, cytochrome c release, Fas and FasL levels, caspase cascade activation and the loss in the mitochondrial out membrane potential indicated that both intrinsic and extrinsic apoptotic pathways were triggered by ARG. Moreover, Jun NH2-terminal kinase (JNK) and p38 phosphorylated time-dependently. And inhibition of the phosphorylation of either p38 or JNK led to a significant reduction in HepG2 apoptosis, owing to the crucial roles of p38 and JNK played in regulating the apoptosis pathways. In addition, ARG increased the generation of reactive oxygen species (ROS) in HepG2 cells, while the antioxidant N-acetyl cysteine almost reversed ARG-induced JNK and p38 activation, and dramatically decreased cell apoptosis. In vivo, ARG increased the cell apoptosis in tumour tissues, and p-p38, p-JNK and Bax were significantly upregulated. CONCLUSIONS Our findings demonstrated that ARG induced apoptosis in HCC via ROS-mediated mitogen-activated protein kinases apoptosis pathway.
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Affiliation(s)
- Zheng Lu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Hongbo Zhou
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Shishuo Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Wei Dai
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yan Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Liping Hong
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Fanjie Chen
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Jiyue Cao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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6
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Liu L, Chen J, Cao M, Wang J, Wang S. NO donor inhibits proliferation and induces apoptosis by targeting PI3K/AKT/mTOR and MEK/ERK pathways in hepatocellular carcinoma cells. Cancer Chemother Pharmacol 2019; 84:1303-1314. [PMID: 31555866 DOI: 10.1007/s00280-019-03965-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 09/16/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND PABA/NO, O2-{2,4-dinitro-5-[4-(N-methylamino) benzoyloxy] phenyl} 1-(N, N-dimethylamino) diazen-1-ium-1,2-diolate, is a diazeniumdiolate-based NO-donor prodrug that releases exogenous nitric oxide at high concentrations to induce apoptosis in many tumor cell lines. PURPOSE This study aimed to determine the effects of PABA/NO on hepatocellular carcinoma proliferation and apoptosis induction both in vitro and in vivo experiments. RESULTS PABA/NO dramatically inhibited the growth of Bel-7402 hepatocellular carcinoma cells and significantly induced apoptosis in a concentration-dependent manner, accompanied by down-regulation of Bcl-2 and Bcl-xL, up-regulation of Bax and Bad, release of Cyt c and activation of cleaved-caspase-9/3 and cleaved-PARP, which were related to suppressing PI3K/AKT/mTOR and MEK/ERK signaling pathways. LY294002 (a PI3K inhibitor) and U0126 (an ERK inhibitor) prior to PABA/NO were found to synergistically enhance PABA/NO-induced apoptosis. Carboxy-PTIO as a NO scavenger obviously attenuated PABA/NO-induced apoptosis. Additionally, H22 tumor-bearing mice experiments demonstrated that PABA/NO exerted good anti-tumor effects via reducing tumor volume, tumor weight and decreasing the expression of CD34. Furthermore, PABA/NO treatment strongly inhibited the phosphorylation of PI3K/AKT/mTOR and MEK/ERK signaling pathways in H22 hepatocellular carcinoma tissues. CONCLUSIONS PABA/NO induced apoptosis through inhibition of PI3K/Akt/mTOR and MEK/ERK pathway in hepatocellular carcinoma cells.
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Affiliation(s)
- Ling Liu
- Department of Pharmacy, Medical College, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, China.
| | - Jingjing Chen
- Department of Pharmacy, Medical College, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, China
| | - Mengyao Cao
- Department of Pharmacy, Medical College, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, China
| | - Jiangang Wang
- Department of Pharmacy, Medical College, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, China
| | - Shuying Wang
- Department of Pharmacy, Medical College, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, China
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7
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Liu B, Liu L, Zang A, Song Z, Yang H, Wang Z, Shang Y, Ma T, Zhang Y. Tanshinone IIA inhibits proliferation and induces apoptosis of human nasopharyngeal carcinoma cells via p53-cyclin B1/CDC2. Oncol Lett 2019; 18:3317-3322. [PMID: 31452810 DOI: 10.3892/ol.2019.10658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Accepted: 03/21/2019] [Indexed: 12/21/2022] Open
Abstract
Tanshinone IIA exhibits natural antioxidative and antineoplastic activity. However, to the best of our knowledge, the effects of tanshinone IIA on human nasopharyngeal carcinoma cells remains unknown. The present study aimed to investigate whether tanshinone IIA inhibits proliferation and induces apoptosis of human nasopharyngeal carcinoma cells via p53-cyclin B1/cell division cycle gene 2 (CDC2). Cell proliferation, cytotoxicity and apoptosis of 13-9B cells were evaluated by an MTT assay, lactate dehydrogenase assay and flow cytometry, respectively. ELISA and western blot analysis were used to analyze caspase-3 activity and poly (ADP-ribose) polymerase (PARP), p53, cyclin B1 and CDC2 protein expression in 13-9B cells. Treatment of 13-9B cells with tanshinone IIA significantly suppressed cell proliferation and significantly induced cytotoxicity and apoptosis of 13-9B cells. Furthermore, tanshinone IIA significantly increased caspase-3 activity, and significantly increased the protein expression levels of PARP, p53, cyclin B1 and CDC2 in 13-9B cells. In summary, the current results indicate that tanshinone IIA inhibits proliferation and induces apoptosis of human nasopharyngeal carcinoma cells via PARP, p53, cyclin B1/CDC2 and caspase-3-mediated signaling.
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Affiliation(s)
- Bin Liu
- Department of Oncology, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Lixia Liu
- Department of Functions Branch, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Aimin Zang
- Department of Oncology, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Zizheng Song
- Department of Oncology, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Hua Yang
- Department of Oncology, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Zhiyu Wang
- Department of Oncology, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Yanhong Shang
- Department of Oncology, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
| | - Tao Ma
- Department of Surgery, Baoding No.1 Central Hospital, Baoding, Hebei 071000, P.R. China
| | - Yonggang Zhang
- Department of Surgery, Affiliated Hospital of Hebei University, Baoding, Hebei 071000, P.R. China
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8
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Wang W, Liu Y, Sun M, Sai N, You L, Dong X, Yin X, Ni J. Hepatocellular Toxicity of Paris Saponins I, II, VI and VII on Two Kinds of Hepatocytes-HL-7702 and HepaRG Cells, and the Underlying Mechanisms. Cells 2019; 8:cells8070690. [PMID: 31324003 PMCID: PMC6678998 DOI: 10.3390/cells8070690] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 07/02/2019] [Accepted: 07/04/2019] [Indexed: 01/28/2023] Open
Abstract
Rhizoma paridis is a popularly-used Chinese medicine in clinics, based on the pharmacodynamic properties of its saponin components. The four main saponins in Rhizoma paridis are designated saponins I, II, VI, and VII. At present, much attention is focused on the anticancer effect of Rhizoma paridis which is manifested in its cytotoxicity to various cancer cells. The purpose of this study was to investigate the hepatocellular toxicities of the four saponins in Rhizoma paridis and the relative intensities of their cytotoxic effects. It was found that the four saponins were cytotoxic to two types of hepatocytes-HL-7702 and HepaRG cells. The cytotoxicities of the four saponins to the two cell models were compared. One of the most cytotoxic saponins was Rhizoma paridis saponin I (PSI). This was used to determine the mechanism of hepatocellular toxicity. Results from MTT assays demonstrated that the four saponins induced apoptosis of the two hepatocyte models in a dose-dependent and time-dependent manner. In addition, fluorescent 4′,6-diamidino-2-phenylindole (DAPI) staining was used to observe the morphological changes of HepaRG cells after saponin administration. Further, as the concentration increased, PSI-induced lactate dehydrogenase (LDH) release from HepaRG cells increased gradually. In addition, PSI enhanced the levels of reactive oxygen species (ROS) and blocked the S and G2 phases of the cell cycle in HepaRG cells. A western blot indicated that PSI upregulated the protein expression levels of p53, p21, and Fas. Furthermore, the PSI-induced changes in the p53 protein increased the Bax/bcl-2 ratio, resulting in enhancement of the release of mitochondrial cytochrome c, activation of caspases-3, -8, and -9, poly-ADP ribose polymerase (PARP), and ultimately apoptosis. Increased Fas protein activated caspase-8, which led to the activation of caspase-3 and its downstream PARP protein, resulting in cell apoptosis. These results indicate that PSI induced apoptosis in HepaRG cells through activation of ROS and death receptor pathways. The results obtained in this study suggest that the hepatocellular toxicity of saponins in Rhizoma paridis should be considered during the clinical application of this drug. In addition, they provide a reference for future anti-cancer studies on Rhizoma paridis.
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Affiliation(s)
- Wenping Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Yi Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Mingyi Sun
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Na Sai
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Longtai You
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Xiaoxv Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Xingbin Yin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100102, China.
| | - Jian Ni
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100102, China.
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9
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Ma T, Ma QS, Yu B, Liu HM. Discovery of the theobromine derivative MQS-14 that induces death of MGC-803 cells mainly through ROS-mediated mechanisms. Eur J Med Chem 2019; 174:76-86. [DOI: 10.1016/j.ejmech.2019.04.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 04/06/2019] [Accepted: 04/16/2019] [Indexed: 12/29/2022]
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10
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Ye C, Li R, Xu L, Qiu Y, Fu S, Liu Y, Wu Z, Hou Y, Hu CAA. Effects of Baicalin on piglet monocytes involving PKC-MAPK signaling pathways induced by Haemophilus parasuis. BMC Vet Res 2019; 15:98. [PMID: 30909903 PMCID: PMC6434632 DOI: 10.1186/s12917-019-1840-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 03/07/2019] [Indexed: 12/11/2022] Open
Abstract
Background Haemophilus parasuis (HPS) is the causative agent of Glässer’s disease, characterized by arthritis, fibrinous polyserositis and meningitis, and resulting in worldwide economic losses in the swine industry. Baicalin (BA), a commonly used traditional Chinese medication, has been shown to possess a series of activities, such as anti-bacterial, anti-viral, anti-tumor, anti-oxidant and anti-inflammatory activities. However, whether BA has anti-apoptotic effects following HPS infection is unclear. Here, we investigated the anti-apoptotic effects and mechanisms of BA in HPS-induced apoptosis via the protein kinase C (PKC)–mitogen-activated protein kinase (MAPK) pathway in piglet’s mononuclear phagocytes (PMNP). Results Our data demonstrated that HPS could induce reactive oxygen species (ROS) production, arrest the cell cycle and promote apoptosis via the PKC–MAPK signaling pathway in PMNP. Moreover, when BA was administered, we observed a reduction in ROS production, suppression of cleavage of caspase-3 in inducing apoptosis, and inhibition of activation of the PKC–MAPK signaling pathway for down-regulating p-JNK, p-p38, p-ERK, p-PKC-α and PKC-δ in PMNP triggered by HPS. Conclusions Our data strongly suggest that BA can reverse the apoptosis initiated by HPS through regulating the PKC–MAPK signaling pathway, which represents a promising therapeutic agent in the treatment of HPS infection.
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Affiliation(s)
- Chun Ye
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan, 430023, People's Republic of China
| | - Ruizhi Li
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China
| | - Lei Xu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China
| | - Yinsheng Qiu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China. .,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan, 430023, People's Republic of China.
| | - Shulin Fu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan, 430023, People's Republic of China
| | - Yu Liu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan, 430023, People's Republic of China
| | - Zhongyuan Wu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan, 430023, People's Republic of China
| | - Yongqing Hou
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan, 430023, People's Republic of China
| | - Chien-An Andy Hu
- Biochemistry and Molecular Biology, University of New Mexico School of Medicine, Albuquerque, NM, 87131, USA
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11
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Banerjee M, Ghosh M, Pradhan S, Sanmartín Matalobos J, Rej A, Hira SK, Das D. Azouracil and Its Cu(II)-Catalyzed Cyclization to an Anticancer Active Triazole Derivative: Symmetrical and Asymmetrical Reductive Cleavage, DNA Interaction, and Molecular Docking Studies. ACS APPLIED BIO MATERIALS 2019; 2:1184-1196. [PMID: 35021367 DOI: 10.1021/acsabm.8b00775] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The 6-amino-1,3-dimethyl uracil-based azo derivative (p-carboxy phenylazouracil, L11) undergoes Cu(II)-catalyzed cyclization to a triazole derivative, namely, 1,3-dimethyl-8-(p-carboxy phenyl) azapurine (L11P). Interestingly, the azo functionality of L11 undergoes both symmetrical and asymmetrical reductive cleavage at two different reaction conditions. The chloride salts of Mn(II), Ni(II), and Pd(II) catalyze reductive cleavage of an azo moiety in an asymmetric manner, producing a new uracil hydrazine derivative (A3). On the other hand, hydrazine catalyzes symmetrical reductive cleavage of the azo moiety of L11, resulting in 5,6-diamino-1,3-dimethyl uracil (A2) along with the starting p-aminobenzoic acid (A1). Time-dependent density functional theoretical (TD-DFT) studies provide optimized geometries of L11, L11P, and A3 along with their orbital energies. The L11 and L11P bind firmly to genomic DNA of E. coli with a site size n ∼ 9 and n ∼ 8. The L11P shows anticancer activity on selected murine lymphoma cancer cell lines (DL, YAC1, and 2PK3). In addition, its antiproliferative activity is measured with several cancer cell lines and found hemocompatible toward blood cells. Corresponding molecular docking studies of L11P with caspase-3 (cysteine-aspartic proteases) unlock their mode of interaction.
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Affiliation(s)
- Mahuya Banerjee
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India
| | - Milan Ghosh
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India
| | - Sayantan Pradhan
- Department of Chemistry, Jadavpur University, Kolkata, West Bengal 700032, India
| | - Jesús Sanmartín Matalobos
- Departamento de Química Inorgánica, Facultad de Química, Avda. Das Ciencias s/n, Santiago de Compostela 15782, Spain
| | - Abhinandan Rej
- Department of Zoology, The University of Burdwan, Burdwan, West Bengal 713104, India
| | - Sumit Kumar Hira
- Department of Zoology, The University of Burdwan, Burdwan, West Bengal 713104, India
| | - Debasis Das
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India
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Fan X, Wang P, Sun Y, Jiang J, Du H, Wang Z, Duan Z, Lei H, Li H. Induction of apoptosis by an oleanolic acid derivative in SMMC-7721 human hepatocellular carcinoma cells is associated with mitochondrial dysfunction. Oncol Lett 2017; 15:2821-2828. [PMID: 29467861 PMCID: PMC5778847 DOI: 10.3892/ol.2017.7653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 07/27/2017] [Indexed: 02/07/2023] Open
Abstract
The aim of the present study was to investigate the effects of an oleanolic acid derivative, a novel antitumor drug, on the growth of SMMC-7721 human hepatocellular carcinoma cells and the underlying mechanism. An MTT assay was performed to determine the cytotoxicity of the oleanolic acid derivative. Cell membrane integrity was assessed using fluorescence microscopy to assess the uptake of annexin V-FITC/propidium iodide (PI). Western blotting was used to detect the apoptosis-associated proteins B cell lymphoma-2 (Bcl-2), Bax, caspase-9 and caspase-3. A spectrophotometer was used to analyze the intracellular adenosine triphosphate (ATP) expression level. The loss of mitochondrial membrane potential was detected by performing the JC-1 assay. ELISA was used to evaluate the content of cytochrome c (Cyt-C). The oleanolic acid derivative reduced the cell viability of SMMC-7721 cells in a dose- and time-dependent manner. The half maximal inhibitory concentration values of the oleanolic acid derivative in SMMC-7721 cells at 24, 48 and 72 h were 26.80, 11.85, and 6.66 µM, respectively. The antiapoptotic-protein Bcl-2 was downregulated, and the proapoptotic protein Bax was upregulated following treatment with the oleanolic acid derivative for 48 h. The oleanolic acid derivative induced the cleavage of caspase-9 and caspase-3 as well as promoted annexin V-FITC/PI uptake in SMMC-7721 cells. Furthermore, treatment of SMMC-7721 cells with the oleanolic acid derivative induced a reduction of the intracellular ATP expression level, loss of ΔΨm and Cyt-C release from the mitochondria. The oleanolic acid derivative induced apoptosis in SMMC-7721 human cells. Mitochondrial dysfunction was involved in the anticancer effects of this derivative on SMMC-7721 human cells.
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Affiliation(s)
- Xinfeng Fan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, P.R. China
| | - Penglong Wang
- Department of Traditional Chinese Medicinal Chemistry, Beijing University of Chinese Medicine, Beijing 100000, P.R. China
| | - Yaogui Sun
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, P.R. China
| | - Junbing Jiang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, P.R. China
| | - Haiyuan Du
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, P.R. China
| | - Zhirui Wang
- Transplantation Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Zhibian Duan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, P.R. China
| | - Haimin Lei
- Department of Traditional Chinese Medicinal Chemistry, Beijing University of Chinese Medicine, Beijing 100000, P.R. China
| | - Hongquan Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, P.R. China
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Suppression of Oxidative Stress and Apoptosis in Electrically Stimulated Neonatal Rat Cardiomyocytes by Resveratrol and Underlying Mechanisms. J Cardiovasc Pharmacol 2017; 70:396-404. [DOI: 10.1097/fjc.0000000000000534] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Subban K, Singh S, Subramani R, Johnpaul M, Chelliah J. Fungal 7-epi-10-deacetyltaxol produced by an endophytic Pestalotiopsis microspora induces apoptosis in human hepatocellular carcinoma cell line (HepG2). BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 17:504. [PMID: 29183320 PMCID: PMC5706334 DOI: 10.1186/s12906-017-1993-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 11/01/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND Paclitaxel (taxol) is a potent anticancer drug that is used in the treatment of a wide variety of cancerous. In the present study, we identified a taxol derivative named 7-epi-10-deacetyltaxol (EDT) from the culture of an endophytic fungus Pestalotiopsis microspora isolated from the bark of Taxodium mucronatum. This study was carried out to investigate the effects of fungal EDT on cell proliferation, the induction of apoptosis and the molecular mechanisms of apoptosis in human hepatoma HepG2 cells in vitro. METHODS The endophytic fungus was identified by traditional and molecular taxonomical characterization and the fungal EDT was purified using column chromatography and confirmed by various spectroscopic and chromatographic comparisons with authentic paclitaxel. We studied the in vitro effects of EDT on HepG2 cells for parameters such as cell cycle distribution, DNA fragmentation, reactive oxygen species (ROS) generation and nuclear morphology. Further, western blot analysis was used to evaluate Bcl-2-associated X protein (Bax), B-cell lymphoma 2 (Bcl-2), p38-mitogen activated protein kinase (MAPK) and poly [ADP-ribose] polymerase (PARP) expression. RESULTS We demonstrate that the fungal EDT exhibited significant in vitro cytotoxicity in HepG2 cells. We investigated cytotoxicity mechanism of EDT in HepG2 cells. The results showed nuclear condensation and DNA fragmentation were observed in cells treated with fungal EDT. Besides, the fungal EDT arrested HepG2 cells at G2/M phase of cell cycle. Furthermore, fungal EDT induced apoptosis in HepG2 cells in a dose-dependent manner associated with ROS generation and increased Bax/Bcl-2 ratio, p38 MAPKs and PARP cleavage. CONCLUSIONS Our data show that EDT induced apoptotic cell death in HepG2 cells occurs through intrinsic pathway by generation of ROS mediated and activation of MAPK pathway. This is the first report for 7-epi-10-deacetyltaxol (EDT) isolated from a microbial source.
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Affiliation(s)
- Kamalraj Subban
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka 560012 India
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai, Tamil Nadu India
| | - Satpal Singh
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka 560012 India
| | - Ramesh Subramani
- Department of Biology, College of Engineering, Science & Technology, Fiji National University, Natabua Campus, Lautoka, Fiji Islands
| | - Muthumary Johnpaul
- Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai, Tamil Nadu India
| | - Jayabaskaran Chelliah
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka 560012 India
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Zeng Y, Lian S, Li D, Lin X, Chen B, Wei H, Yang T. Anti-hepatocarcinoma effect of cordycepin against NDEA-induced hepatocellular carcinomas via the PI3K/Akt/mTOR and Nrf2/HO-1/NF-κB pathway in mice. Biomed Pharmacother 2017; 95:1868-1875. [PMID: 28968944 DOI: 10.1016/j.biopha.2017.09.069] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 09/05/2017] [Accepted: 09/13/2017] [Indexed: 02/05/2023] Open
Abstract
The purpose of the present study was to evaluate the effects of cordycepin (CA) on N-nitrosodiethylamine (NDEA)-induced hepatocellular carcinomas (HCC) and explore its potential mechanisms. Mice were randomly assigned to four groups: control group, NDEA group, NDEA+CA (20mg/kg) group, NDEA+CA (40mg/kg) group. The animal of each group were given NDEA (100ppm) in drinking water. One hour later, CA, which was dissolved in PBS, were intragastrically administered for continuous seven days. The results showed that CA reduced the activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in liver and serum. CA also reduced the levels of interleukin-6 (IL-6), IL-1β, tumor necrosis factor-α (TNF-α), methane dicarboxylic aldehyde (MDA), and stored the activity of superoxygen dehydrogenises (SOD) in serum. CA could obviously attenuate the hepatic pathological alteration. Furthermore, CA effectively inhibited the phosphorylations of phosphatidylinositol 3 kinase(PI3K), protein kinase B (Akt), mammalian target of rapamycin (mTOR). In conclusion, our research suggested that CA exhibited protective effects on NDEA-induced hepatocellular carcinomas via the PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Yongming Zeng
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, P.R. China
| | - Shuyi Lian
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, P.R. China
| | - Danfeng Li
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, P.R. China
| | - Xiaosheng Lin
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, P.R. China
| | - Bozan Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, P.R. China
| | - Hongfa Wei
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, P.R. China
| | - Tian Yang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, P.R. China.
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Liu Y, Wang Z, Xie W, Gu Z, Xu Q, Su L. Oxidative stress regulates mitogen‑activated protein kinases and c‑Jun activation involved in heat stress and lipopolysaccharide‑induced intestinal epithelial cell apoptosis. Mol Med Rep 2017; 16:2579-2587. [PMID: 28656249 PMCID: PMC5548022 DOI: 10.3892/mmr.2017.6859] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 03/23/2017] [Indexed: 01/17/2023] Open
Abstract
Heat stress and gut‑derived endotoxinemia are common causes of multiple organ dysfunction syndrome in heat stroke patients. Evidence has demonstrated that cell apoptosis in the small intestine serves an important role in the pathogenesis of heatstroke, which leads to increased intestinal permeability to endotoxin or lipopolysaccharides (LPS) from the gut entering the circulation. However, little is known about the potential underlying mechanisms mediating heat stress combined with LPS‑induced intestinal epithelial cell apoptosis. In the present study, LPS combined with heat stress induced production of reactive oxygen species (ROS), mitochondrial membrane potential disruption and cell apoptosis, which eventually led to increased intestinal permeability and reduced epithelial resistance in the IEC‑6 cell line. Inductions in ROS, mitochondrial membrane potential disruption and cell apoptosis were detected by using an ROS assay kit, 5,5',6,6'‑tetrachloro‑1,1',3,3'tetraethylbenzimidazo carbocyanine iodide dye kit and annexin V‑fluorescein isothiocyanate apoptosis kit, respectively. The effect of ROS on mitogen activated protein kinases (MAPKs) and c‑Jun activation was investigated using the antioxidant drug, butylated hydroxyanisole (BHA) by western blotting. The results of the present study demonstrated that ROS is essential to activate p38, extracellular signal‑regulated kinase (ERK) and c‑Jun, but not c‑Jun N‑terminal kinase (JNK), in LPS combined with heat stress treated cells. Furthermore, ROS, and activation of p38, JNK and c‑Jun, were revealed to serve pro‑apoptosis roles which aggravated damage to epithelial barrier integrity, as assessed by flow cytometry using Annexin V‑fluorescein isothiocyanate staining and pretreatment of cells with specific inhibitors of ROS, JNK, p38 and c‑Jun (BHA, SP600125, SB203580 and c‑Jun peptide, respectively). Transepithelial electrical resistance and horseradish peroxidase permeability were detected in cells treated with LPS combined with heat stress, which revealed that ERK serves an anti‑apoptosis role, as determined by pretreatment of cells with PD98059, a specific inhibitor of ERK. In conclusion, these findings suggested a novel role of the ROS signaling pathway which involved activation of MAPKs and c‑Jun, following LPS combined with heat stress‑induced IEC‑6 cell apoptosis and impairment of the epithelial barrier. These results may facilitate understanding of pathological conditions involving ROS, such as heat stroke.
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Affiliation(s)
- Yanan Liu
- Department of Intensive Care Unit, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
- Department of ICU, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
| | - Zhenglian Wang
- Graduate School, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Weidang Xie
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong 510000, P.R. China
| | - Zhengtao Gu
- Department of Intensive Care Unit, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, P.R. China
| | - Qiulin Xu
- Department of ICU, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
- Correspondence to: Dr Qiulin Xu or Professor Lei Su, Department of ICU, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, 111 Liu Hua Road, Guangzhou, Guangdong 510010, P.R. China, E-mail: , E-mail:
| | - Lei Su
- Department of ICU, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, Guangzhou, Guangdong 510010, P.R. China
- Correspondence to: Dr Qiulin Xu or Professor Lei Su, Department of ICU, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, General Hospital of Guangzhou Military Command, 111 Liu Hua Road, Guangzhou, Guangdong 510010, P.R. China, E-mail: , E-mail:
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Antihepatocarcinoma Effect of Portulaca oleracea L. in Mice by PI3K/Akt/mTOR and Nrf2/HO-1/NF- κB Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:8231358. [PMID: 28659990 PMCID: PMC5474246 DOI: 10.1155/2017/8231358] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 12/06/2016] [Indexed: 12/25/2022]
Abstract
The purpose of the present study was to evaluate the pharmacological effects of Portulaca oleracea L. (Purslane) (PL) on N-nitrosodiethylamine- (NDEA-) induced hepatocellular carcinomas (HCC) and explore its potential mechanism. Mice were randomly assigned to four groups: control group, NDEA group, NDEA + Purslane (100 mg/kg) group, and NDEA + Purslane (200 mg/kg) group. The animal of each group was given NDEA (100 ppm) in drinking water. 1 h later, Purslane dissolved in PBS was intragastrically administered for continuous seven days. The results showed that Purslane reduced the activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in liver and serum. Purslane also reduced the contents of interleukin-6 (IL-6), IL-1β, tumor necrosis factor-α (TNF-α), and methane dicarboxylic aldehyde (MDA) and restored the activity of superoxygen dehydrogenises (SOD) in serum. Purslane could obviously attenuate the hepatic pathological alteration. Furthermore, treatment with Purslane effectively inhibited the phosphorylations of phosphatidylinositol 3 kinase (PI3K), protein kinase B (Akt), mammalian target of rapamycin (mTOR), nuclear factor-kappa B (NF-κB), and inhibitor of NF-κBα (IκBα) and upregulated the expressions of NF-E2-related factor 2 (Nrf2) and heme oxygenase- (HO-) 1. In conclusion, our research suggested that Purslane exhibited protective effects on NDEA-induced hepatocellular carcinomas by anti-inflammatory and antioxidative properties via the PI3K/Akt/mTOR and Nrf2/HO-1/NF-κB pathway.
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Jian KL, Zhang C, Shang ZC, Yang L, Kong LY. Eucalrobusone C suppresses cell proliferation and induces ROS-dependent mitochondrial apoptosis via the p38 MAPK pathway in hepatocellular carcinoma cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 25:71-82. [PMID: 28190473 DOI: 10.1016/j.phymed.2016.12.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/17/2016] [Accepted: 12/23/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Eucalyptus extracts have anti-cancer activity against various cancer cells. Formyl-phloroglucinol meroterpenoids (FPMs), which are typical secondary metabolites of the genera Eucalyptus, have many important pharmacological activities. PURPOSE Eucalrobusone C (EC), a new bioactive phytochemical, was first isolated from the leaves of Eucalyptus robusta in our laboratory. EC is a FPM, and our previous research revealed that EC showed strongest cytotoxicity in three cancer models than other compounds isolated from the leaves of E. robusta. This study investigated its anti-tumor effects on human hepatocellular carcinoma (HCC) and its underlying mechanisms. METHODS Cell viability was measured by MTT assay. Cell cycle, apoptosis and mitochondrial transmembrane potential were determined by flow cytometry. Immunofluorescence was determined by a laser scanning confocal microscope. Protein levels were analyzed by Western blotting. RESULTS Our results showed that EC exerted strong anti-proliferative activity against HCC cells in a concentration- and time-dependent manner. EC markedly induced apoptosis through the caspase-dependent mitochondrial pathway, and the cell cycle was arrested at S phase. SB203580, a p38 MAPK inhibitor, effectively decreased cell death caused by EC. Moreover, the ROS scavenger N-acetyl cysteine (NAC) significantly attenuated apoptosis induced by EC and reversed EC-induced p38 MAPK activation. CONCLUSION Our findings indicate that EC induces mitochondrial-dependent apoptosis in HCC cells through ROS generation and p38 MAPK activation, making EC a promising candidate for further development as an anticancer agent for HCC cells.
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Affiliation(s)
- Kai-Li Jian
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Chao Zhang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Zhi-Chun Shang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Lei Yang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
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Zhang C, Jia X, Bao J, Chen S, Wang K, Zhang Y, Li P, Wan JB, Su H, Wang Y, Mei Z, He C. Polyphyllin VII induces apoptosis in HepG2 cells through ROS-mediated mitochondrial dysfunction and MAPK pathways. Altern Ther Health Med 2016; 16:58. [PMID: 26861252 PMCID: PMC4746894 DOI: 10.1186/s12906-016-1036-x] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Accepted: 02/02/2016] [Indexed: 01/15/2023]
Abstract
Background Paris polyphylla is an oriental folk medicine that has anticancer activities both in vivo and in vitro. Polyphyllin VII (PP7), a pennogenyl saponin from P. polyphylla has been found to exert strong anticancer activity. However, the underlying mechanisms are poorly understood. In the present study, the anticancer effect of polyphyllin VII against human liver cancer cells and the molecular mechanisms were investigated. Methods Cellular viability was measured by MTT assay. Apoptosis, intracellular reactive oxygen species (ROS) and mitochondrial membrane potential levels were evaluated using the InCell 2000 confocal microscope. The expression levels of apoptotic-related proteins were evaluated by Western blotting. Results PP7 strongly inhibited the cell growth and induced apoptosis and necrosis in hepatocellular carcinoma HepG2 cells. Meanwhile, PP7 up-regulated the levels of Bax/Bcl-2, cytochrome c, the cleaved forms of caspases-3, -8, -9, and poly (ADP-ribose) polymerase in a dose- and time-dependent manner, indicating that PP7 induced apoptosis in HepG2 cells through both intrinsic and extrinsic pathways. Moreover, PP7 provoked the production of intracellular ROS and the depolarization of mitochondrial membrane potential. Further analysis showed that PP7 significantly augmented the phosphorylation of JNK, ERK and p38, the major components of mitogen-activated protein kinase (MAPK) pathways, and the expressions of tumor suppressor proteins p53 and PTEN. In addition, PP7-induced apoptosis was remarkably attenuated by MAPK inhibitors and ROS inhibitor. Conclusions These results demonstrated that PP7 induced apoptotic cell death in HepG2 cells through both intrinsic and extrinsic pathways by promoting the generation of mitochondrial-mediated ROS and activating MAPK and PTEN/p53 pathways. Electronic supplementary material The online version of this article (doi:10.1186/s12906-016-1036-x) contains supplementary material, which is available to authorized users.
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Neuroprotection by Polynitrogen Manganese Complexes: Regulation of Reactive Oxygen Species-Related Pathways. Sci Rep 2016; 6:20853. [PMID: 26857964 PMCID: PMC4746657 DOI: 10.1038/srep20853] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 01/12/2016] [Indexed: 12/22/2022] Open
Abstract
Cell death in the central nervous system causes neurologic diseases, in which reactive oxygen species (ROS) play a critical role by either inducing cellular oxidative stress or by increasing the cell tolerance against insult. Neurologic diseases may potentially be treated by regulating ROS levels in a certain range with small molecules. We studied preconditioning with two polynitrogen manganese complexes (1 and 2) to regulate intracellular ROS levels in the protection of both the differentiated rat pheochromocytoma cell line (PC12 cells) and neurons against H2O2-induced apoptosis. Pre-treatment with the two complexes attenuated the cell apoptosis caused by H2O2. And the ROS-related neuroprotective mechanisms were explored. Both complexes activate the hypoxia inducible factor-related pathways and increase the cell adaptation to oxidative stress. Pre-treatment with complex 1 eliminated intracellular ROS, which also activated antioxidase system, while short-term incubation of complex 2, generated low levels of ROS leading to cell survival.
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Ma T, Zhang WN, Yang L, Zhang C, Lin R, Shan SM, Zhu MD, Luo JG, Kong LY. Cytotoxic withanolides from Physalis angulata var. villosa and the apoptosis-inducing effect via ROS generation and the activation of MAPK in human osteosarcoma cells. RSC Adv 2016. [DOI: 10.1039/c6ra08574a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Physagulide I induced apoptosis and cell cycle arrest via ROS generation and the activation of MAPK in human osteosarcoma cells.
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Affiliation(s)
- Ting Ma
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Wen-Na Zhang
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Lei Yang
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Chao Zhang
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Ru Lin
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Si-Ming Shan
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Meng-Di Zhu
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Jian-Guang Luo
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
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Hesperetin Induces the Apoptosis of Gastric Cancer Cells via Activating Mitochondrial Pathway by Increasing Reactive Oxygen Species. Dig Dis Sci 2015; 60:2985-95. [PMID: 25972151 DOI: 10.1007/s10620-015-3696-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 04/29/2015] [Indexed: 01/19/2023]
Abstract
BACKGROUND Hesperetin, has been shown to exert biological activities on various types of human cancers. However, few related studies on gastric cancer are available. AIM In this study, we sought to investigate the effect of hesperetin on gastric cancer and clarify its specific mechanism. MATERIALS AND METHODS Cell Counting Kit-8, 2',7'-dichlorofluorescin diacetate, JC-1, Hoechst 33258 staining, and western bolt were used to detect cell viability, levels of intracellular reactive oxygen species (ROS), changes in mitochondrial membrane potential (△ψ m), cell apoptosis, and expressions of mitochondrial pathway proteins, respectively. Meanwhile, xenograft tumor models in nude mice were made to evaluate the effect of hesperetin on gastric cancer in vivo. RESULTS Compared with the control group, the proliferation of gastric cancer cells in hesperetin groups was significantly inhibited (P < 0.05), and dose- and time-dependent effects were observed. Pretreatment with H2O2 (1 mM) or N-acetyl-L-cysteine (5 mM) enhanced or attenuated the hesperetin-induced inhibition of cell viability (P < 0.05). Percentages of apoptotic cells, levels of intracellular ROS, and △ψ m varied with the dose and treatment time of hesperetin (P < 0.05), and hesperetin caused an increase in the levels of AIF, Apaf-1, Cyt C, caspase-3, caspase-9, and Bax and a decrease in Bcl-2 levels (P < 0.05). Meanwhile, hesperetin significantly inhibited the growth of xenograft tumors (P < 0.05). CONCLUSION Our study suggests that hesperetin could inhibit the proliferation and induce the apoptosis of gastric cancer cells via activating the mitochondrial pathway by increasing the ROS.
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López-García S, Castañeda-Sanchez JI, Jiménez-Arellanes A, Domínguez-López L, Castro-Mussot ME, Hernández-Sanchéz J, Luna-Herrera J. Macrophage Activation by Ursolic and Oleanolic Acids during Mycobacterial Infection. Molecules 2015; 20:14348-64. [PMID: 26287131 PMCID: PMC6332297 DOI: 10.3390/molecules200814348] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 07/30/2015] [Accepted: 07/31/2015] [Indexed: 12/31/2022] Open
Abstract
Oleanolic (OA) and ursolic acids (UA) are triterpenes that are abundant in vegetables, fruits and medicinal plants. They have been described as active moieties in medicinal plants used for the treatment of tuberculosis. In this study, we analyzed the effects of these triterpenes on macrophages infected in vitro with Mycobacterium tuberculosis (MTB). We evaluated production of nitric oxide (NO), reactive oxygen species (ROS), and cytokines (TNF-α and TGF-β) as well as expression of cell membrane receptors (TGR5 and CD36) in MTB-infected macrophages following treatment with OA and UA. Triterpenes caused reduced MTB growth in macrophages, stimulated production of NO and ROS in the early phase, stimulated TNF-α, suppressed TGF-β and caused over-expression of CD36 and TGR5 receptors. Thus, our data suggest immunomodulatory properties of OA and UA on MTB infected macrophages. In conclusion, antimycobacterial effects induced by these triterpenes may be attributable to the conversion of macrophages from stage M2 (alternatively activated) to M1 (classically activated).
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Affiliation(s)
- Sonia López-García
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, IPN, Prolongación de Carpio y Plan de Ayala S/N, 11340 México City, Mexico; E-Mails: (S.L.-G.); (L.D.-L.); (M.E.C.-M.)
- Departamento de Genética y Biología Molecular, CINVESTAV, Avenida Instituto Politécnico Nacional Número 2508, 07360 México City, Mexico; E-Mail:
| | - Jorge Ismael Castañeda-Sanchez
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana, Unidad Xochimilco, Calzada del Hueso Número 1100, 04960 México City, Mexico; E-Mail:
| | - Adelina Jiménez-Arellanes
- Centro Médico Nacional Siglo XXI, IMSS, Unidad de Investigación Médica en Farmacología, Avenida Cuauhtémoc Número 330, 06725 México City, Mexico; E-Mail:
| | - Lilia Domínguez-López
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, IPN, Prolongación de Carpio y Plan de Ayala S/N, 11340 México City, Mexico; E-Mails: (S.L.-G.); (L.D.-L.); (M.E.C.-M.)
| | - Maria Eugenia Castro-Mussot
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, IPN, Prolongación de Carpio y Plan de Ayala S/N, 11340 México City, Mexico; E-Mails: (S.L.-G.); (L.D.-L.); (M.E.C.-M.)
| | - Javier Hernández-Sanchéz
- Departamento de Genética y Biología Molecular, CINVESTAV, Avenida Instituto Politécnico Nacional Número 2508, 07360 México City, Mexico; E-Mail:
| | - Julieta Luna-Herrera
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, IPN, Prolongación de Carpio y Plan de Ayala S/N, 11340 México City, Mexico; E-Mails: (S.L.-G.); (L.D.-L.); (M.E.C.-M.)
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Farooqi AA, Li KT, Fayyaz S, Chang YT, Ismail M, Liaw CC, Yuan SSF, Tang JY, Chang HW. Anticancer drugs for the modulation of endoplasmic reticulum stress and oxidative stress. Tumour Biol 2015; 36:5743-52. [PMID: 26188905 PMCID: PMC4546701 DOI: 10.1007/s13277-015-3797-0] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 07/10/2015] [Indexed: 12/20/2022] Open
Abstract
Prior research has demonstrated how the endoplasmic reticulum (ER) functions as a multifunctional organelle and as a well-orchestrated protein-folding unit. It consists of sensors which detect stress-induced unfolded/misfolded proteins and it is the place where protein folding is catalyzed with chaperones. During this folding process, an immaculate disulfide bond formation requires an oxidized environment provided by the ER. Protein folding and the generation of reactive oxygen species (ROS) as a protein oxidative byproduct in ER are crosslinked. An ER stress-induced response also mediates the expression of the apoptosis-associated gene C/EBP-homologous protein (CHOP) and death receptor 5 (DR5). ER stress induces the upregulation of tumor necrosis factor-related apoptosis inducing ligand (TRAIL) receptor and opening new horizons for therapeutic research. These findings can be used to maximize TRAIL-induced apoptosis in xenografted mice. This review summarizes the current understanding of the interplay between ER stress and ROS. We also discuss how damage-associated molecular patterns (DAMPs) function as modulators of immunogenic cell death and how natural products and drugs have shown potential in regulating ER stress and ROS in different cancer cell lines. Drugs as inducers and inhibitors of ROS modulation may respectively exert inducible and inhibitory effects on ER stress and unfolded protein response (UPR). Reconceptualization of the molecular crosstalk among ROS modulating effectors, ER stress, and DAMPs will lead to advances in anticancer therapy.
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Affiliation(s)
- Ammad Ahmad Farooqi
- Institute of Biomedical and Genetic Engineering (IBGE), KRL Hospital, Islamabad, Pakistan,
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Liu L, Wang D, Wang J, Ji H, Zhang Y. NOAD, a novel nitric oxide donor, induces G2/M phase arrest and apoptosis in human hepatocellular carcinoma Bel-7402 cells. Toxicol In Vitro 2015; 29:1289-97. [PMID: 26001517 DOI: 10.1016/j.tiv.2015.05.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 03/30/2015] [Accepted: 05/07/2015] [Indexed: 11/30/2022]
Abstract
O(2)-(2,4-dinitro-5-{[2-(12-en-28-b-d-galactopyranosyl-oleanolate-3-yl)-oxy-2-oxoethyl]amino}phenyl)1-(N-hydroxyethylmethylamino)diazen-1-ium-1,2-diolate (NOAD), a novel NO-releasing derivative of oleanolic acid (OA), is an active cytotoxic component. In this study, NOAD induced a rise in intracellular NO levels and showed cytotoxic effects which were prevented by hemoglobin (NO scavenger). Meanwhile, NOAD induced G2/M phase cell cycle arrest in a concentration-dependent manner. Analysis of the cell cycle regulatory proteins demonstrated that NOAD did not change the steady-state levels of cyclin A, cyclin B, cyclin E, Cdk2 and Cdk4, but decreased the protein levels of Cdk1 and Cdc25C. Meanwhile, the levels of phosphorylation of Cdc25C and Cdk1 were significantly increased by NOAD in a concentration-dependent manner. Moreover, NOAD modulated the phosphorylation of protein kinases Chk2. During the G2/M arrest, cyclin-dependent kinase inhibitors (CDKIs), p21(WAF1/CIP1) and p27(kip1) were increased in a concentration-dependent manner. In addition, NOAD also caused a marked increase in the apoptotic cells, as characterized by fragmented nuclei, sub G1 formation, the level of 8-OHDG increase and poly (ADP-ribose) polymerase (PARP) cleavage, which was associated with activation of caspase-3, caspase-8 and caspase-9. Up-regulation of Bax and down-regulation of Bcl-2 were also observed in Bel-7402 cells treated with NOAD. These data suggest that NOAD produces anti-tumor effect via induction of G2/M cell cycle arrest and apoptosis.
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Affiliation(s)
- Ling Liu
- Department of Pharmacy, Medical College, Henan University of Science and Technology, Luoyang 471003, China
| | - Dongmei Wang
- Department of Pathogen Biology, Medical College, Henan University of Science and Technology, Luoyang 471003, China
| | - Jiangang Wang
- Department of Pharmacy, Medical College, Henan University of Science and Technology, Luoyang 471003, China
| | - Hui Ji
- State Key Laboratory of Natural Medicines, Department of Pharmacology, China Pharmaceutical University, Nanjing 210009, China.
| | - Yihua Zhang
- Center of Drug Discovery, China Pharmaceutical University, Nanjing 210009, China.
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Meng G, Liu J, Lin S, Guo Z, Xu L. Microcystin-LR-caused ROS generation involved in p38 activation and tau hyperphosphorylation in neuroendocrine (PC12) cells. ENVIRONMENTAL TOXICOLOGY 2015; 30:366-374. [PMID: 24142891 DOI: 10.1002/tox.21914] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/23/2013] [Accepted: 10/02/2013] [Indexed: 06/02/2023]
Abstract
Microcystin-LR (MC-LR), a potent specific hepatotoxin produced by cyanobacteria, has recently been reported to show neurotoxicity. Our previous study demonstrated that MC-LR caused the reorganization of cytoskeleton architectures and hyperphosphorylation of the cytoskeletal-associated proteins tau and HSP27 in neuroendocrine PC12 cell line by direct PP2A inhibition and indirect p38 mitogen-activated protein kinase (MAPK) activation. It has been shown that oxidative stress is extensively associated with MC-LR toxicity, mainly resulting from an excessive production of reactive oxygen species (ROS). However, the mechanisms by which ROS mediates the cytotoxic action of MC-LR are unclear. In the present study, we investigated whether ROS might play a critical role in MC-LR-induced hyperphosphorylation of microtubule-associated protein tau and the activation of the MAPKs in PC12 cell line. The results showed that MC-LR had time- and concentration-dependent effects on ROS generation, p38-MAPK activation and tau phosphorylation. The time-course studies indicated similar biphasic changes in ROS generation and tau hyperphosphorylation, which started to increase within 1 h and reached the maximum level at 3 h followed by a decrease after prolonged treatment. Furthermore, pretreatment with the antioxidants, N-acetylcysteine and vitamin C, significantly decreased MC-LR-induced ROS generation and effectively attenuated p38-MAPK activation as well as tau hyperphosphorylation. Taken together, these findings suggest that ROS generation triggered by MC-LR is a key intracellular event that contributes to an induction of p38-MAPK activation and tau phosphorylation, and that blockade of this ROS-mediated redox-sensitive signal cascades may attenuate the toxic effects of MC-LR.
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Affiliation(s)
- Guanmin Meng
- Department of Clinical Laboratory, Tongde Hospital of Zhejiang Province, 234 Gucui Road, Hangzhou, 310012, China; Department of Biochemistry, School of Medicine, Zhejiang University, 866th Yu Hang Tang Road, Hangzhou, 310058, China
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Fu J, Zou Y, Huang Z, Yan C, Zhou Q, Zhang H, Lai Y, Peng S, Zhang Y. Identification of nitric oxide-releasing derivatives of oleanolic acid as potential anti-colon cancer agents. RSC Adv 2015. [DOI: 10.1039/c5ra00270b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
NO-releasing hybrid 6 regulates colon cancer-related signaling pathways, exhibiting potent anti-colon cancer activity in vitro and in vivo.
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Affiliation(s)
- Junjie Fu
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Yu Zou
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Zhangjian Huang
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Chang Yan
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Qimeng Zhou
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Huibin Zhang
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Yisheng Lai
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Sixun Peng
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
| | - Yihua Zhang
- State Key Laboratory of Natural Medicines
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases
- China Pharmaceutical University
- Nanjing 210009
- PR China
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28
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Maßberg D, Simon A, Häussinger D, Keitel V, Gisselmann G, Conrad H, Hatt H. Monoterpene (-)-citronellal affects hepatocarcinoma cell signaling via an olfactory receptor. Arch Biochem Biophys 2014; 566:100-9. [PMID: 25513961 DOI: 10.1016/j.abb.2014.12.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 12/03/2014] [Accepted: 12/04/2014] [Indexed: 12/15/2022]
Abstract
Terpenes are the major constituents of essential oils in plants. In recent years, terpenes have become of clinical relevance due to their ability to suppress cancer development. Their effect on cellular proliferation has made them promising agents in the prevention or treatment of many types of cancer. In the present study, a subset of different monoterpenes was investigated for their molecular effects on the hepatocellular carcinoma cell line Huh7. Using fluorometric calcium imaging, acyclic monoterpene (-)-citronellal was found to induce transient Ca(2+) signals in Huh7 cells by activating a cAMP-dependent signaling pathway. Moreover, we detected the (-)-citronellal-activated human olfactory receptor OR1A2 at the mRNA and protein levels and demonstrated its potential involvement in (-)-citronellal-induced calcium signaling in Huh7 cells. Furthermore, activation of OR1A2 results in phosphorylation of p38 MAPK and reduced cell proliferation, indicating an effect on hepatocellular carcinoma progression. Here, we provide for the first time data on the molecular mechanism evoked by (-)-citronellal in human hepatocellular carcinoma cells. The identified olfactory receptor could serve as a potential therapeutic target for cancer diagnosis and treatment.
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Affiliation(s)
- Désirée Maßberg
- Department of Cell Physiology, Ruhr-University Bochum, 44801 Bochum, Germany.
| | - Annika Simon
- Department of Cell Physiology, Ruhr-University Bochum, 44801 Bochum, Germany.
| | - Dieter Häussinger
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany.
| | - Verena Keitel
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University Düsseldorf, 40225 Düsseldorf, Germany.
| | - Günter Gisselmann
- Department of Cell Physiology, Ruhr-University Bochum, 44801 Bochum, Germany.
| | - Heike Conrad
- Department of Cell Physiology, Ruhr-University Bochum, 44801 Bochum, Germany.
| | - Hanns Hatt
- Department of Cell Physiology, Ruhr-University Bochum, 44801 Bochum, Germany.
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29
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Dai M, Liu Y, Nie X, Zhang J, Wang Y, Ben J, Zhang S, Yang X, Sang A. Expression of RBMX in the light-induced damage of rat retina in vivo. Cell Mol Neurobiol 2014; 35:463-71. [PMID: 25407628 DOI: 10.1007/s10571-014-0140-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 11/13/2014] [Indexed: 12/23/2022]
Abstract
RNA-binding motif protein, X-linked (RBMX) is a 43 kDa nuclear protein in the RBM family and functions on alternative splicing of RNA. The gene encoding RBMX is located on chromosome Xq26. To investigate whether RBMX is involved in retinal neuron apoptosis, we performed a light-induced retinal damage model in adult rats. Western blotting analysis showed RBMX gradually increased, reached a peak at 12 h and then declined during the following days. The association of RBMX in retinal ganglion cells (RGCs) with light exposure was found by immunofluorescence staining. The injury-induced expression of RBMX was detected in active caspase-3 and TUNEL positive cells. We also examined the expression profiles of active caspase-3, bcl-2 and Bax, whose changes were correlated with the expression profiles of RBMX. To summarize, we uncovered the dynamic changes of RBMX in the light-induced retinal damage model for the first time. RBMX might play a significant role in the degenerative process of RGCs after light-induced damage in the retina.
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Affiliation(s)
- Ming Dai
- Department of Ophthalmology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
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NG as a novel nitric oxide donor induces apoptosis by increasing reactive oxygen species and inhibiting mitochondrial function in MGC803 cells. Int Immunopharmacol 2014; 23:27-36. [PMID: 25135879 DOI: 10.1016/j.intimp.2014.08.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/20/2014] [Accepted: 08/06/2014] [Indexed: 02/06/2023]
Abstract
NG, O(2)-(2,4-dinitro-5-{[2-(12-en-28-β-D-galactopyranosyl-oleanolate-3-yl)-oxy-2-oxoethyl] amino} phenyl) 1-(N-hydroxyethylmethylamino) diazen-1-ium-1,2-diolate, was identified in our laboratory as a novel nitric oxide-releasing prodrug with antitumor effects. A previous study showed that NG inhibited cell growth, and induced apoptosis in HepG2 cells. In this study, the inhibitory effects of NG on the viability of MGC803 cells were examined using methylthiazolyl tetrazolium biomide (MTT) assay, neutral red assay and trypan blue exclusion test. The results showed that NG had strong cytotoxicity to induce apoptosis, which was characterized by a significant externalization of phosphatidylserine, nuclear morphological changes and enhanced Bax-to-Bcl-2 ratio. Moreover, the release of cytochrome c (Cyt c) from mitochondria and the activation of caspase-9/3 were also detected, indicating that NG may induce apoptosis through a mitochondrial-mediated pathway. NG induced mitochondrial dysfunction in MGC803 cells by altering membrane potential (△Ψm), the inhibition of complexes I, II and IV consequently decreasing ATP level. Furthermore, the treatment of MGC803 cells with NG caused a marked rise in oxidative stress as characterized by accumulation of reactive oxygen species (ROS), excessive malondialdehyde (MDA) production and a reduction in glutathione hormone (GSH) level and superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activity. In addition, pretreatment with N-acetylcysteine (NAC), a GSH synthesis precursor, was partially protective against the NG-induced ROS generation and cell apoptosis. In contrast, pretreatment of MGC803 cells with L-buthionine-S, R-sulfoximine (BSO), a GSH synthesis inhibitor, increased the ROS levels, and aggravated cell apoptosis by NG. These results suggest that NG-induced apoptosis in MGC803 cells is mediated, at least in part, by the increase in ROS production, oxidative stress and mitochondrial dysfunction.
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31
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Song W, Hu P, Shan Y, Du M, Liu A, Ye R. Cartilage polysaccharide induces apoptosis in K562 cells through a reactive oxygen species-mediated caspase pathway. Food Funct 2014; 5:2486-93. [PMID: 25112602 DOI: 10.1039/c4fo00476k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a polysaccharide (PS) was successfully extracted from porcine cartilage and its effect on chronic myeloid leukemia was examined using human K562 cells. The results of cell proliferation assays indicated that the PS inhibited cancer cell growth at different concentrations. Morphological and biochemical changes characteristic of apoptosis were observed and confirmed by PI staining and TUNEL assay. The nuclear DNA, RNA and proteins of the cancer cells subjected to PS treatment were irreversibly destroyed by reactive oxygen species (ROS), additionally, the ROS effected on the cells directly. The apoptotic signals altered the permeability of the mitochondrial outer membrane, thereby resulted in the release of apoptotic factors into the cytoplasm that induced apoptosis. As caspase-3/7, 8 and 9 were expressed, it was speculated that both intrinsic and extrinsic pathways were involved in the PS-induced apoptosis.
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Affiliation(s)
- Wei Song
- School of Food Science and Engineering, Harbin Institute of Technology, Harbin 150090, China.
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Ramsay EE, Dilda PJ. Glutathione S-conjugates as prodrugs to target drug-resistant tumors. Front Pharmacol 2014; 5:181. [PMID: 25157234 PMCID: PMC4127970 DOI: 10.3389/fphar.2014.00181] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 07/16/2014] [Indexed: 01/08/2023] Open
Abstract
Living organisms are continuously exposed to xenobiotics. The major phase of enzymatic detoxification in many species is the conjugation of activated xenobiotics to reduced glutathione (GSH) catalyzed by the glutathione-S-transferase (GST). It has been reported that some compounds, once transformed into glutathione S-conjugates, enter the mercapturic acid pathway whose end products are highly reactive and toxic for the cell responsible for their production. The cytotoxicity of these GSH conjugates depends essentially on GST and gamma-glutamyl transferases (γGT), the enzymes which initiate the mercapturic acid synthesis pathway. Numerous studies support the view that the expression of GST and γGT in cancer cells represents an important factor in the appearance of a more aggressive and resistant phenotype. High levels of tumor GST and γGT expression were employed to selectively target tumor with GST- or γGT-activated drugs. This strategy, explored over the last two decades, has recently been successful using GST-activated nitrogen mustard (TLK286) and γGT-activated arsenic-based (GSAO and Darinaparsin) prodrugs confirming the potential of GSH-conjugates as anticancer drugs.
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Affiliation(s)
- Emma E Ramsay
- Tumour Metabolism Group, Adult Cancer Program, Lowy Cancer Research Centre and Prince of Wales Clinical School, Faculty of Medicine, University of New South Wales Sydney, NSW, Australia
| | - Pierre J Dilda
- Tumour Metabolism Group, Adult Cancer Program, Lowy Cancer Research Centre and Prince of Wales Clinical School, Faculty of Medicine, University of New South Wales Sydney, NSW, Australia
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Wang Y, He QY, Chiu JF. Dioscin induced activation of p38 MAPK and JNK via mitochondrial pathway in HL-60 cell line. Eur J Pharmacol 2014; 735:52-8. [PMID: 24755146 DOI: 10.1016/j.ejphar.2014.04.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Revised: 04/09/2014] [Accepted: 04/10/2014] [Indexed: 02/05/2023]
Abstract
Saponins have shown promise in cancer prevention and therapy; however, little is known about the detailed signaling pathways underlying their anticancer activities. In the present study, we examined the mechanisms of action of dioscin, a glucosides saponin isolated from Polygonatum zanlanscianense pump, in human myeloblast leukemia HL-60 cells. Dioscin suppressed HL-60 cell growth in a dose-dependent manner. This inhibition was due to the induction of apoptosis as revealed by the externalization of phosphatidylserine, and cleavages of lamin A/C and PARP-1. Treatment with dioscin induced apoptosis through activation of caspases 3, 7, 8, 9, and 10. Phosphorylation of p38 MAPK and JNK contributed to dioscin-induced apoptosis upstream of caspase activation. Using various inhibitors and antioxidant agents, we found that mitochondrial derived reactive oxygen species and depletion of mitochondrial transmembrane potential lead to the phosphorylation of p38 MAPK and JNK. Taken together, our results demonstrated that dioscin induces apoptosis by activation of p38 MAPK and JNK through the caspase-dependent mitochondrial death pathway. This work suggests that dioscin may be used as a drug lead for the treatment of myeloblast leukemia.
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Affiliation(s)
- Ying Wang
- State Key Laboratory of Quality Research in Chinese Medicine and Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China.
| | - Qing-Yu He
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes and Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Jen-Fu Chiu
- Open Laboratory for Tumor Molecular Biology, Department of Biochemistry, Shantou University Medical College, Shantou, China; Department of Anatomy, The University of Hong Kong, Hong Kong SAR, China.
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Pan S, Hu J, Zheng T, Liu X, Ju Y, Xu C. Oleanolic acid derivatives induce apoptosis in human leukemia K562 cell involved in inhibition of both Akt1 translocation and pAkt1 expression. Cytotechnology 2014; 67:821-9. [PMID: 24728886 DOI: 10.1007/s10616-014-9722-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 03/20/2014] [Indexed: 12/12/2022] Open
Abstract
Oleanolic acid (OA) derivatives exhibit numerous pleiotropic effects in many cancers. The present study aimed to investigate the molecular mechanisms of 5'-amino-oleana-2,12-dieno[3,2-d]pyrimidin-28-oic acid (compound 4) and oleana-2,12-dieno[2,3-d]isoxazol-28-oic acid (compound 5) inducing apoptosis in human leukemia K562 cell. We investigated the effects of the compounds on K562 cell growth, apoptosis and cell cycle. The compounds showed strong inhibitory effects on K562 cell viability in a dose-dependent manner determined by the 3-(4,5-dimethylthiazoyl)-2,5-diphenyltetrazolium bromide assay and significantly increased chromatin condensation and apoptotic bodies in K562 cells. Flow cytometry assay suggested that the compounds induced inhibition of K562 cell proliferation associated with G1 phase arrest. In addition, the compounds inhibited Akt1 recruiting to membrane in CHO cells which express Akt1-EGFP constitutively and down-regulated the expression of pAkt1 in K562 cell. These results suggested that the compounds can efficiently inhibit proliferation and induce apoptosis perhaps involved in inactivation of Akt1. The OA derivatives may be potential chemotherapeutic agents for the treatment of human cancer.
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Affiliation(s)
- Shuhua Pan
- College of Life Science, Zhejiang Sci-Tech University, Xiasha Higher Education Zone, Hangzhou, 310018, Zhejiang Province, China
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Gu ZT, Wang H, Li L, Liu YS, Deng XB, Huo SF, Yuan FF, Liu ZF, Tong HS, Su L. Heat stress induces apoptosis through transcription-independent p53-mediated mitochondrial pathways in human umbilical vein endothelial cell. Sci Rep 2014; 4:4469. [PMID: 24667845 PMCID: PMC3966036 DOI: 10.1038/srep04469] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 03/05/2014] [Indexed: 02/07/2023] Open
Abstract
Cells apoptosis induced by intense heat stress is the prominent feature of heat-related illness. However, little is known about the biological effects of heat stress on cells apoptosis. Herein, we presented evidence that intense heat stress could induce early apoptosis of HUVEC cells through activating mitochondrial pathway with changes in mitochondrial membrane potential(ΔΨm), release of cytochrome c, and activation of caspase-9 and -3. We further revealed that p53 played a crucial role in heat stress-induced early apoptosis, with p53 protein rapidly translocated into mitochondria. Using pifithrin-α(PFT), a p53's mitochondrial translocation inhibitor, we found that pretreated with PFT, heat stress induced mitochondrial p53 translocation was significantly suppressed, accompanied by a significant alleviation in the loss of ΔΨm, cytochrome c release and caspase-9 activation. Furthermore, we also found that generation of reactive oxygen species (ROS) was a critical mediator in heat stress-induced apoptosis. In addition, the antioxidant MnTMPyP significantly decreased the heat stress-induced p53's mitochondrial translocation, followed by the loss of ΔΨm, cytochrome c release, caspase-9 activation and heat stress-mediated apoptosis. Conclusively, these findings indicate the contribution of the transcription-independent mitochondrial p53 pathway to early apoptosis in HUVEC cells induced by oxidative stress in response to intense heat stress.
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Affiliation(s)
- Z T Gu
- 1] The Key Laboratory of Molecular Biology, State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, P R China [2] Department of intensive care unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, PR China [3]
| | - H Wang
- 1] Department of Oncology, Cancer Research Institute, Southern Medical University, Guangzhou, PR China [2]
| | - L Li
- 1] The Key Laboratory of Molecular Biology, State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, P R China [2] Department of intensive care unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, PR China [3]
| | - Y S Liu
- Department of intensive care unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, PR China
| | - X B Deng
- Department of Oncology, Cancer Research Institute, Southern Medical University, Guangzhou, PR China
| | - S F Huo
- Department of Oncology, Cancer Research Institute, Southern Medical University, Guangzhou, PR China
| | - F F Yuan
- 1] The Key Laboratory of Molecular Biology, State Administration of Traditional Chinese Medicine, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, P R China [2] Department of intensive care unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, PR China
| | - Z F Liu
- Department of intensive care unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, PR China
| | - H S Tong
- Department of intensive care unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, PR China
| | - L Su
- Department of intensive care unit, General Hospital of Guangzhou Military Command, Key Laboratory of Tropical Zone Trauma Care and Tissue Repair of PLA, Guangzhou, PR China
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Shanmugam MK, Dai X, Kumar AP, Tan BKH, Sethi G, Bishayee A. Oleanolic acid and its synthetic derivatives for the prevention and therapy of cancer: preclinical and clinical evidence. Cancer Lett 2014; 346:206-16. [PMID: 24486850 DOI: 10.1016/j.canlet.2014.01.016] [Citation(s) in RCA: 188] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 01/06/2014] [Accepted: 01/20/2014] [Indexed: 02/07/2023]
Abstract
Oleanolic acid (OA, 3β-hydroxyolean-12-en-28-oic acid) is a ubiquitous pentacyclic multifunctional triterpenoid, widely found in several dietary and medicinal plants. Natural and synthetic OA derivatives can modulate multiple signaling pathways including nuclear factor-κB, AKT, signal transducer and activator of transcription 3, mammalian target of rapamycin, caspases, intercellular adhesion molecule 1, vascular endothelial growth factor, and poly (ADP-ribose) polymerase in a variety of tumor cells. Importantly, synthetic derivative of OA, 2-cyano-3,12-dioxoolean-1,9-dien-28-oic acid (CDDO), and its C-28 methyl ester (CDDO-Me) and C28 imidazole (CDDO-Im) have demonstrated potent antiangiogenic and antitumor activities in rodent cancer models. These agents are presently under evaluation in phase I studies in cancer patients. This review summarizes the diverse molecular targets of OA and its derivatives and also provides clear evidence on their promising potential in preclinical and clinical situations.
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Affiliation(s)
- Muthu K Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Xiaoyun Dai
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Alan Prem Kumar
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Cancer Science Institute of Singapore, National University of Singapore, Centre for Translational Medicine, Singapore; School of Biomedical Sciences, Faculty of Health Sciences, Curtin University, Western Australia, Australia; Department of Biological Sciences, University of North Texas, Denton, TX, USA
| | - Benny K H Tan
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Cancer Science Institute of Singapore, National University of Singapore, Centre for Translational Medicine, Singapore.
| | - Anupam Bishayee
- Department of Pharmaceutical Sciences, School of Pharmacy, American University of Health Sciences, Signal Hill, CA, USA.
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The activation of p38 and JNK by ROS, contribute to OLO-2-mediated intrinsic apoptosis in human hepatocellular carcinoma cells. Food Chem Toxicol 2014; 63:38-47. [DOI: 10.1016/j.fct.2013.10.043] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/30/2013] [Accepted: 10/27/2013] [Indexed: 11/19/2022]
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Highlights of Pentacyclic Triterpenoids in the Cancer Settings. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2014. [DOI: 10.1016/b978-0-444-63294-4.00002-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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ONTD induces apoptosis of human hepatoma Bel-7402 cells via a MAPK-dependent mitochondrial pathway and the depletion of intracellular glutathione. Int J Biochem Cell Biol 2013; 45:2632-42. [DOI: 10.1016/j.biocel.2013.08.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 08/29/2013] [Accepted: 08/31/2013] [Indexed: 01/27/2023]
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Up-regulation of Smurf1 after spinal cord injury in adult rats. J Mol Histol 2013; 44:381-90. [DOI: 10.1007/s10735-013-9499-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 03/12/2013] [Indexed: 01/16/2023]
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WU QIULING, LV TINGTING, CHEN YAN, WEN LU, ZHANG JUNLI, JIANG XUDONG, LIU FANG. Apoptosis of HL-60 human leukemia cells induced by Asiatic acid through modulation of B-cell lymphoma 2 family proteins and the mitogen-activated protein kinase signaling pathway. Mol Med Rep 2012; 12:1429-34. [DOI: 10.3892/mmr.2015.3534] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 02/20/2015] [Indexed: 11/06/2022] Open
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