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Zhong M, Lu Y, Li S, Li X, Liu Z, He X, Zhang Y. Synthesis, cytotoxicity, antioxidant activity and molecular modeling of new NSAIDs-EBS derivatives. Eur J Med Chem 2023; 259:115662. [PMID: 37482018 DOI: 10.1016/j.ejmech.2023.115662] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/13/2023] [Accepted: 07/16/2023] [Indexed: 07/25/2023]
Abstract
Two series of NSAIDs-EBS derivatives (5a-j and 9a-i) based on the hybridization of nonsteroidal anti-inflammatory drugs (NSAIDs) skeleton and Ebselen moiety were synthesized. Their cytotoxicity was evaluated against five types of human cancer cell lines, BGC-823 (human gastric cancer cell line), SW480 (human colon adenocarcinoma cells), MCF-7 (human breast adenocarcinoma cells), HeLa (human cervical cancer cells), A549 (human lung carcinoma cells). Moreover, the most active compound 5j showed IC50 values below 3 μM in all cancer cell lines and with remarkable anticancer activity against MCF-7 (1.5 μM) and HeLa (1.7 μM). The redox properties of the NSAIDs-EBS derivatives prepared herein were conducted by 2, 2-didiphenyl-1-picrylhydrazyl (DPPH), bleomycin dependent DNA damage and glutathione peroxidase (GPx)-like assays. Finally, TrxR1 inhibition activity assay and molecular docking study revealed NSAIDs-EBS derivatives could serve as potential TrxR1 inhibitor.
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Affiliation(s)
- Min Zhong
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, 430056, China; Key Laboratory of Optoelectronic Chemical Materials and Devices, Jianghan University, Wuhan, 430056, China
| | - Ying Lu
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Jianghan University, Wuhan, 430056, China
| | - Shaolei Li
- Shenzhen Fushan Biological Technology Co., Ltd, Kexing Science Park A1 1005, Nanshan Zone, Shenzhen, 518057, China
| | - Xiaolong Li
- Shenzhen Fushan Biological Technology Co., Ltd, Kexing Science Park A1 1005, Nanshan Zone, Shenzhen, 518057, China
| | - Zhenming Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Xianran He
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, 430056, China.
| | - Yongmin Zhang
- Wuhan Institute of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, 430056, China; Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 Place Jussieu, 75005, Paris, France; Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, China.
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2
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He X, Nie Y, Zhong M, Li S, Li X, Guo Y, Liu Z, Gao Y, Ding F, Wen D, Zhang Y. New organoselenides (NSAIDs-Se derivatives) as potential anticancer agents: Synthesis, biological evaluation and in silico calculations. Eur J Med Chem 2021; 218:113384. [PMID: 33799070 DOI: 10.1016/j.ejmech.2021.113384] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 03/03/2021] [Accepted: 03/10/2021] [Indexed: 12/25/2022]
Abstract
Herein we reported the synthesis of twenty new organoselenium compounds (2a-2j and 3a-3j) based on the hybridization of nonsteroidal antiinflammatory drugs (NSAIDs) skeleton and organoselenium motif (-SeCN and -SeCF3), the anticancer activity was evaluated against four types of cancer cell lines, Caco-2 (human colon adenocarcinoma cells), BGC-823 (human gastric cancer cells), MCF-7 (human breast adenocarcinoma cells), PC-3 (human prostatic cancer cells). Interestingly, the introduction of the -SeCN or -SeCF3 moiety in corresponding parent NSAIDs results in the significant effect on cancer cell lines. Moreover, the most active compound 3a showed IC50 values lower than 5 μM against the four cancer cell lines, particularly to BGC-823 and MCF-7 with IC50 values of 2.5 and 2.7 μM, respectively. Furthermore, three compounds 3a, 3g and 3i were selected to investigate their ability to induce apoptosis in BGC-823 cells via modulating the expression of anti-apoptotic Bcl-2 protein, pro-inflammatory cytokines (IL-2) and proapoptotic caspase-8 protein. The redox properties of the NSAIDs-Se derivatives prepared herein were conducted by 2, 2-didiphenyl-1-picrylhydrazyl (DPPH), bleomycin dependent DNA damage and glutathione peroxidase (GPx)-like assays. Finally, molecular docking study revealed that an interaction with the active site of thioredoxin reductase 1 (TrxR1) and predicted the anticancer activity of the synthesized candidates. Overall, these results could serve a promising launch point for further design of NSAIDs-Se derivatives as potential anticancer agents.
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Affiliation(s)
- Xianran He
- Institute for Interdisciplinary Research, Jianghan University, Wuhan Economic and Technological Development Zone, Wuhan, 430056, China
| | - Yousong Nie
- School of Environmental Ecology and Biological Engineering, Wuhan Institute of Technology, LiuFang Campus, Guanggu 1st Road, Wuhan, 430205, China
| | - Min Zhong
- Institute for Interdisciplinary Research, Jianghan University, Wuhan Economic and Technological Development Zone, Wuhan, 430056, China
| | - Shaolei Li
- Shenzhen Fushan Biological Technology Co., Ltd, Kexing Science Park A1 1005, Nanshan Zone, Shenzhen, 518057, China
| | - Xiaolong Li
- Shenzhen Fushan Biological Technology Co., Ltd, Kexing Science Park A1 1005, Nanshan Zone, Shenzhen, 518057, China
| | - Yi Guo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Zhenming Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Yangguang Gao
- Institute for Interdisciplinary Research, Jianghan University, Wuhan Economic and Technological Development Zone, Wuhan, 430056, China
| | - Fei Ding
- Institute for Interdisciplinary Research, Jianghan University, Wuhan Economic and Technological Development Zone, Wuhan, 430056, China
| | - Dan Wen
- Institute for Interdisciplinary Research, Jianghan University, Wuhan Economic and Technological Development Zone, Wuhan, 430056, China
| | - Yongmin Zhang
- Institute for Interdisciplinary Research, Jianghan University, Wuhan Economic and Technological Development Zone, Wuhan, 430056, China; Institut Parisien de Chimie Moléculaire, CNRS UMR 8232, Sorbonne Université, 4 Place Jussieu, 75005, Paris, France.
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3
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Nie Y, Zhong M, Li S, Li X, Zhang Y, Zhang Y, He X. Synthesis and Potential Anticancer Activity of Some Novel Selenocyanates and Diselenides. Chem Biodivers 2020; 17:e1900603. [DOI: 10.1002/cbdv.201900603] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 03/20/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Yousong Nie
- School of Environmental Ecology and Biological EngineeringWuhan Institute of Technology, LiuFang Campus Guanggu 1st road Wuhan 430205 P. R. China
| | - Min Zhong
- Institute for Interdisciplinary ResearchJianghan University Wuhan Economic and Technological Development Zone Wuhan 430056 P. R. China
| | - Shaolei Li
- Shenzhen Fushan Biological Technology Co.Ltd., Kexing Science Park A1 1005, Nanshan Zone Shenzhen 518057 P. R. China
| | - Xiaolong Li
- Shenzhen Fushan Biological Technology Co.Ltd., Kexing Science Park A1 1005, Nanshan Zone Shenzhen 518057 P. R. China
| | - Yongmin Zhang
- Institut Parisien de Chimie MoléculaireCNRS UMR 7201Sorbonne Université 4 Place Jussieu 75005 Paris France
| | - Youhong Zhang
- School of Environmental Ecology and Biological EngineeringWuhan Institute of Technology, LiuFang Campus Guanggu 1st road Wuhan 430205 P. R. China
| | - Xianran He
- Institute for Interdisciplinary ResearchJianghan University Wuhan Economic and Technological Development Zone Wuhan 430056 P. R. China
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4
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Shaaban S, Ashmawy AM, Negm A, Wessjohann LA. Synthesis and biochemical studies of novel organic selenides with increased selectivity for hepatocellular carcinoma and breast adenocarcinoma. Eur J Med Chem 2019; 179:515-526. [DOI: 10.1016/j.ejmech.2019.06.075] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 06/02/2019] [Accepted: 06/27/2019] [Indexed: 01/06/2023]
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5
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Ney Y, Jawad Nasim M, Kharma A, Youssef LA, Jacob C. Small Molecule Catalysts with Therapeutic Potential. Molecules 2018; 23:E765. [PMID: 29584669 PMCID: PMC6017662 DOI: 10.3390/molecules23040765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 03/22/2018] [Accepted: 03/24/2018] [Indexed: 01/21/2023] Open
Abstract
Catalysts are employed in many areas of research and development where they combine high efficiency with often astonishing selectivity for their respective substrates. In biology, biocatalysts are omnipresent. Enzymes facilitate highly controlled, sophisticated cellular processes, such as metabolic conversions, sensing and signalling, and are prominent targets in drug development. In contrast, the therapeutic use of catalysts per se is still rather limited. Recent research has shown that small molecule catalytic agents able to modulate the redox state of the target cell bear considerable promise, particularly in the context of inflammatory and infectious diseases, stroke, ageing and even cancer. Rather than being "active" on their own in a more traditional sense, such agents develop their activity by initiating, promoting, enhancing or redirecting reactions between biomolecules already present in the cell, and their activity therefore depends critically on the predisposition of the target cell itself. Redox catalysts, for instance, preferably target cells with a distinct sensitivity towards changes in an already disturbed redox balance and/or increased levels of reactive oxygen species. Indeed, certain transition metal, chalcogen and quinone agents may activate an antioxidant response in normal cells whilst at the same time triggering apoptosis in cancer cells with a different pre-existing "biochemical redox signature" and closer to the internal redox threshold. In pharmacy, catalysts therefore stand out as promising lead structures, as sensor/effector agents which are highly effective, fairly selective, active in catalytic, i.e., often nanomolar concentrations and also very flexible in their structural design.
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Affiliation(s)
- Yannick Ney
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbruecken, Germany.
| | - Muhammad Jawad Nasim
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbruecken, Germany.
| | - Ammar Kharma
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbruecken, Germany.
| | - Lama A Youssef
- Department of Pharmaceutics and Pharmaceutical Technology, School of Pharmacy, Damascus University, Damascus, Syria.
| | - Claus Jacob
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbruecken, Germany.
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6
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Shaaban S, Negm A, Ashmawy AM, Ahmed DM, Wessjohann LA. Combinatorial synthesis, in silico, molecular and biochemical studies of tetrazole-derived organic selenides with increased selectivity against hepatocellular carcinoma. Eur J Med Chem 2016; 122:55-71. [PMID: 27343853 DOI: 10.1016/j.ejmech.2016.06.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/08/2016] [Accepted: 06/04/2016] [Indexed: 12/15/2022]
Abstract
Novel tetrazole-based diselenides and selenoquinones were synthesized via azido-Ugi and sequential nucleophilic substitution (SN) strategy. Molecular docking study into mammalian TrxR1 was used to predict the anticancer potential of the newly synthesized compounds. The cytotoxic activity of the compounds was evaluated using hepatocellular carcinoma (HepG2) and breast adenocarcinoma (MCF-7) cancer cells and compared with their cytotoxicity in normal fibroblast (WI-38) cells. The corresponding redox properties of the synthesized compounds were assessed employing 2,2-diphenyl-1-picrylhydrazyl (DPPH), glutathione peroxidase (GPx)-like activity and bleomycin dependent DNA damage. In general, diselenides showed preferential cytotoxicity to HepG2 compared to MCF-7 cells. These compounds exhibited also good GPx catalytic activity compared to ebselen (up to 5 fold). Selenoquinones 18, 21, 22 and 23 were selected to monitor the expression levels of caspase-8, Bcl-2 and Ki-67 molecular biomarkers. Interestingly, these compounds downregulated the Bcl-2 and Ki-67 expression levels and activated the expression of caspase-8 in HepG2 cells compared to untreated cells. These results indicate that some of the newly synthesized compounds possess anti-HepG2 activity.
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Affiliation(s)
- Saad Shaaban
- Organic Chemistry Division, Department of Chemistry, Faculty of Science, Mansoura University, El-Gomhorya Street, 35516 Mansoura, Egypt; Leibniz Institute of Plant Biochemistry, Department of Bioorganic Chemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
| | - Amr Negm
- Biochemistry Division, Department of Chemistry, Faculty of Science, Mansoura University, El-Gomhorya Street, 35516 Mansoura, Egypt
| | - Abeer M Ashmawy
- Cancer Biology Department, National Cancer Institute, Cairo University, Egypt
| | - Dalia M Ahmed
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Ain Shams University, Egypt
| | - Ludger A Wessjohann
- Leibniz Institute of Plant Biochemistry, Department of Bioorganic Chemistry, Weinberg 3, D-06120 Halle (Saale), Germany.
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7
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The design of redox active thiol peroxidase mimics: Dihydrolipoic acid recognition correlates with cytotoxicity and prooxidant action. Biochem Pharmacol 2016; 104:19-28. [DOI: 10.1016/j.bcp.2016.01.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 01/14/2016] [Indexed: 10/22/2022]
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8
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Aspects of a Distinct Cytotoxicity of Selenium Salts and Organic Selenides in Living Cells with Possible Implications for Drug Design. Molecules 2015; 20:13894-912. [PMID: 26263963 PMCID: PMC6331825 DOI: 10.3390/molecules200813894] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 07/14/2015] [Accepted: 07/22/2015] [Indexed: 12/20/2022] Open
Abstract
Selenium is traditionally considered as an antioxidant element and selenium compounds are often discussed in the context of chemoprevention and therapy. Recent studies, however, have revealed a rather more colorful and diverse biological action of selenium-based compounds, including the modulation of the intracellular redox homeostasis and an often selective interference with regulatory cellular pathways. Our basic activity and mode of action studies with simple selenium and tellurium salts in different strains of Staphylococcus aureus (MRSA) and Saccharomyces cerevisiae indicate that such compounds are sometimes not particularly toxic on their own, yet enhance the antibacterial potential of known antibiotics, possibly via the bioreductive formation of insoluble elemental deposits. Whilst the selenium and tellurium compounds tested do not necessarily act via the generation of Reactive Oxygen Species (ROS), they seem to interfere with various cellular pathways, including a possible inhibition of the proteasome and hindrance of DNA repair. Here, organic selenides are considerably more active compared to simple salts. The interference of selenium (and tellurium) compounds with multiple targets could provide new avenues for the development of effective antibiotic and anticancer agents which may go well beyond the traditional notion of selenium as a simple antioxidant.
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9
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Intracellular diagnostics: hunting for the mode of action of redox-modulating selenium compounds in selected model systems. Molecules 2014; 19:12258-79. [PMID: 25123189 PMCID: PMC6271387 DOI: 10.3390/molecules190812258] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 07/22/2014] [Accepted: 07/24/2014] [Indexed: 01/26/2023] Open
Abstract
Redox-modulating compounds derived from natural sources, such as redox active secondary metabolites, are currently of considerable interest in the field of chemoprevention, drug and phytoprotectant development. Unfortunately, the exact and occasionally even selective activity of such products, and the underlying (bio-)chemical causes thereof, are often only poorly understood. A combination of the nematode- and yeast-based assays provides a powerful platform to investigate a possible biological activity of a new compound and also to explore the “redox link” which may exist between its activity on the one side and its chemistry on the other. Here, we will demonstrate the usefulness of this platform for screening several selenium and tellurium compounds for their activity and action. We will also show how the nematode-based assay can be used to obtain information on compound uptake and distribution inside a multicellular organism, whilst the yeast-based system can be employed to explore possible intracellular mechanisms via chemogenetic screening and intracellular diagnostics. Whilst none of these simple and easy-to-use assays can ultimately substitute for in-depth studies in human cells and animals, these methods nonetheless provide a first glimpse on the possible biological activities of new compounds and offer direction for more complicated future investigations. They may also uncover some rather unpleasant biochemical actions of certain compounds, such as the ability of the trace element supplement selenite to induce DNA strand breaks.
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Pase CS, Roversi K, Trevizol F, Roversi K, Kuhn FT, Schuster AJ, Vey LT, Dias VT, Barcelos RCS, Piccolo J, Emanuelli T, Bürger ME. Influence of perinatal trans fat on behavioral responses and brain oxidative status of adolescent rats acutely exposed to stress. Neuroscience 2013; 247:242-52. [PMID: 23742847 DOI: 10.1016/j.neuroscience.2013.05.053] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 05/23/2013] [Accepted: 05/24/2013] [Indexed: 12/30/2022]
Abstract
Because consumption of processed foods has increased in the last decades and so far its potential influence on emotionality and susceptibility to stress is unknown, we studied the influence of different fatty acids (FA) on behavioral and biochemical parameters after acute restrain stress (AS) exposure. Two sequential generations of female rats were supplemented with soybean oil (control group; C-SO), fish oil (FO) and hydrogenated vegetable fat (HVF) from pregnancy and during lactation. At 41days of age, half the animals of each supplemented group were exposed to AS and observed in open field and elevated plus maze task, followed by euthanasia for biochemical assessments. The HVF-supplemented group showed higher anxiety-like symptoms per se, while the C-SO and FO groups did not show these behaviors. Among groups exposed to AS, HVF showed locomotor restlessness in the open field, while both C-SO and HVF groups showed anxiety-like symptoms in the elevated plus maze, but this was not observed in the FO group. Biochemical evaluations showed higher lipoperoxidation levels and lower cell viability in cortex in the HVF group. In addition, HVF-treated rats showed reduced catalase activity in striatum and hippocampus, as well as increased generation of reactive species in striatum, while FO was associated with increased cell viability in the hippocampus. Among groups exposed to AS, HVF increased reactive species generation in the brain, decreased cell viability in the cortex and striatum, and decreased catalase activity in the striatum and hippocampus. Taken together, our findings show that the type of FA provided during development and growth over two generations is able to modify the brain oxidative status, which was particularly adversely affected by trans fat. In addition, the harmful influence of chronic consumption of trans fats as observed in this study can enhance emotionality and anxiety parameters resulting from stressful situations of everyday life, which can trigger more severe neuropsychiatric conditions.
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Affiliation(s)
- C S Pase
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, UFSM, RS, Brazil
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11
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Selenium- and tellurium-containing redox modulators with distinct activity against macrophages: possible implications for the treatment of inflammatory diseases. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Giles NM, Kumari S, Stamm RA, Patel S, Giles GI. A hydrogen peroxide electrode assay to measure thiol peroxidase activity for organoselenium and organotellurium drugs. Anal Biochem 2012; 429:103-7. [DOI: 10.1016/j.ab.2012.07.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Revised: 07/08/2012] [Accepted: 07/10/2012] [Indexed: 10/28/2022]
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13
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Synchrotron radiation induced X-ray emission studies of the antioxidant mechanism of the organoselenium drug ebselen. J Biol Inorg Chem 2012; 17:589-98. [DOI: 10.1007/s00775-012-0879-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 01/23/2012] [Indexed: 01/30/2023]
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14
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Towards the mechanism and comparative effect of diphenyl diselenide, diphenyl ditelluride and ebselen under various pathophysiological conditions in rat's kidney preparation. Chem Biol Interact 2009; 182:52-8. [DOI: 10.1016/j.cbi.2009.06.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2009] [Revised: 06/23/2009] [Accepted: 06/29/2009] [Indexed: 11/22/2022]
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15
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Mecklenburg S, Collins CA, Döring M, Burkholz T, Abbas M, Fry FH, Pourzand C, Jacob C. The Design of Multifunctional Antioxidants Against the Damaging Ingredients of Oxidative Stress. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500801898200] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Susanne Mecklenburg
- a Division of Bioorganic Chemistry, School of Pharmacy , Saarland University , Saarbruecken, D-66041, Germany
| | - Catriona A. Collins
- b School of Biosciences , University of Exeter , Exeter, EX4 4 QD, United Kingdom
| | - Mandy Döring
- a Division of Bioorganic Chemistry, School of Pharmacy , Saarland University , Saarbruecken, D-66041, Germany
| | - Torsten Burkholz
- a Division of Bioorganic Chemistry, School of Pharmacy , Saarland University , Saarbruecken, D-66041, Germany
| | - Muhammad Abbas
- a Division of Bioorganic Chemistry, School of Pharmacy , Saarland University , Saarbruecken, D-66041, Germany
| | - Fiona H. Fry
- b School of Biosciences , University of Exeter , Exeter, EX4 4 QD, United Kingdom
| | - Charareh Pourzand
- c Department of Pharmacy and Pharmacology , University of Bath , Claverton Down, Bath, BA2 7AY, United Kingdom
| | - Claus Jacob
- a Division of Bioorganic Chemistry, School of Pharmacy , Saarland University , Saarbruecken, D-66041, Germany
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Ji X, Wang W, Cheng J, Yuan T, Zhao X, Zhuang H, Qu L. Free radicals and antioxidant status in rat liver after dietary exposure of environmental mercury. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2006; 22:309-314. [PMID: 21783725 DOI: 10.1016/j.etap.2006.05.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2005] [Accepted: 05/01/2006] [Indexed: 05/31/2023]
Abstract
Potential health effect of dietary exposure to environmental mercury was examined in this study. Dietary exposure significantly increased content of reduced glutathione (GSH) and activity of glutathione peroxidase (GSH-Px) in rat liver at 7 or 20 days (P<0.05; P<0.01), but parameters droped to normal levels after 90 days of exposure. The early increases of the two antioxidants were partly associated with the co-accumulated selenium. However, activity of superoxide dismutase (SOD) was observed significantly decreased after 30 and 90 days of exposure (P<0.05, P<0.05). Changes of antioxidants were paralleled by the induction and aggravation of free radicals in rat liver at 30 and 90 days (P<0.01, P<0.01), increased nitric oxide (NO) content at 90 days (P<0.01). The excess availability of free radicals and the decreased levels of antioxidants resulted in a significant increase of malonyldialdehyde (MDA) after 90 days of exposure, indicating the aggravation of hepatic oxidative status. A number of biomarkers were required to monitor and minimize the health risk for the local population.
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Affiliation(s)
- Xiuling Ji
- School of Environmental Science and Engineering, Donghua University, Shanghai 200051, PR China; School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China
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17
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Cipak A, Hasslacher M, Tehlivets O, Collinson EJ, Zivkovic M, Matijevic T, Wonisch W, Waeg G, Dawes IW, Zarkovic N, Kohlwein SD. Saccharomyces cerevisiae strain expressing a plant fatty acid desaturase produces polyunsaturated fatty acids and is susceptible to oxidative stress induced by lipid peroxidation. Free Radic Biol Med 2006; 40:897-906. [PMID: 16520241 DOI: 10.1016/j.freeradbiomed.2005.10.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2005] [Revised: 10/05/2005] [Accepted: 10/16/2005] [Indexed: 10/25/2022]
Abstract
Although oxygen is essential for aerobic organisms, it also forms potentially harmful reactive oxygen species. For its simplicity, easy manipulation, and cultivation conditions, yeast is used as an attractive model in oxidative stress research. However, lack of polyunsaturated fatty acids in yeast membranes makes yeast unsuitable for research in the field of lipid peroxidation. Therefore, we have constructed a yeast strain expressing a Delta12 desaturase gene from the tropical rubber tree, Hevea brasiliensis. This yeast strain expresses the heterologous desaturase in an active form and, consequently, produces Delta9/Delta12 polyunsaturated fatty acids under inducing conditions. The functional expression of the heterologous desaturase did not affect cellular morphology or growth, indicating no general adverse effect on cellular physiology. However, the presence of polyunsaturated fatty acids changed the yeast's sensitivity to oxidative stress induced by addition of paraquat, tert-butylhydroperoxide, and hydrogen peroxide. This difference in sensitivity to the latter was followed by the formation of 4-hydroxy-2-nonenal, one of the end products of linoleic fatty acid peroxidation, which is known to play a role in cell growth control and signaling. Here we show that this yeast strain conditionally expressing the Delta12 desaturase gene provides a novel and well-defined eukaryotic model in lipid peroxidation research. Its potential to investigate the molecular basis of responses to oxidative stress, in particular the involvement of reactive aldehydes derived from fatty acid peroxidation, especially 4-hydroxy-2-nonenal, will be addressed.
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Affiliation(s)
- Ana Cipak
- Institute Rudjer Boskovic, Zagreb, Croatia
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Pariagh S, Tasker KM, Fry FH, Holme AL, Collins CA, Okarter N, Gutowski N, Jacob C. Asymmetric organotellurides as potent antioxidants and building blocks of protein conjugates. Org Biomol Chem 2005; 3:975-80. [PMID: 15750638 DOI: 10.1039/b500409h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New asymmetric organotellurides exhibiting good antioxidant properties in vitro and in cell culture can be attached to human serum albumin.
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Affiliation(s)
- Sandra Pariagh
- Biocatalysis Centre, School of Biological and Chemical Sciences, University of Exeter, Stocker Road, Exeter EX4 4QD, UK
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Larabee JL, Hocker JR, Hanas JS. Cys redox reactions and metal binding of a Cys2His2 zinc finger. Arch Biochem Biophys 2005; 434:139-49. [PMID: 15629117 DOI: 10.1016/j.abb.2004.10.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2004] [Revised: 10/21/2004] [Indexed: 10/26/2022]
Abstract
The elucidation of mechanisms by which cysteine (Cys) redox reactions influence metal binding to zinc finger domains is important for understanding the structure and function of zinc fingers. The present studies utilize electrospray ionization mass spectrometry (ESI-MS) to analyze Cys redox reactions and their influence on metal ion binding to a synthetic polypeptide similar in motif to the third zinc finger of the RNA polymerase II transcription factor, Sp1 (Sp1-3). The differential specificity of metal binding events to this zinc finger domain is demonstrated over a range of redox-altering dithiothreitol, hydrogen peroxide, and hydrogen ion concentrations. By analyzing this Cys2His2 zinc finger domain at single Da resolution with ESI-MS, shifts in the natural isotope cluster demonstrate that a Cys thiol and thiolate can contribute to Zn2+ and other metal ion coordination. These experiments provide insight into the basic redox chemistry and metal binding mechanisms of Cys2His2 zinc finger domains.
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Affiliation(s)
- Jason L Larabee
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Science Center, Oklahoma City, OK 73104, USA
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Fry FH, Holme AL, Giles NM, Giles GI, Collins C, Holt K, Pariagh S, Gelbrich T, Hursthouse MB, Gutowski NJ, Jacob C. Multifunctional redox catalysts as selective enhancers of oxidative stress. Org Biomol Chem 2005; 3:2579-87. [PMID: 15999190 DOI: 10.1039/b502197a] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Certain cancer cells proliferate under conditions of oxidative stress (OS) and might therefore be selectively targeted by redox catalysts. Among these catalysts, compounds containing a chalcogen and a quinone redox centre are particularly well suited to respond to the presence of OS. These catalysts combine the specific electrochemical features of quinones and chalcogens. They exhibit high selectivity and efficiency against oxidatively stressed rat PC12, human Jurkat and human Daudi cells in cell culture, where their mode of action most likely involves the catalytic activation of existent and the generation of new reactive oxygen species. The high efficiency and selectivity shown by these catalysts makes them interesting for the development of anti-cancer drugs.
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Affiliation(s)
- Fiona H Fry
- School of Biological and Chemical Sciences, University of Exeter, Stocker Road, Exeter, UK EX4 4QD
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