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Borges EL, Ignasiak MT, Velichenko Y, Perin G, Hutton CA, Davies MJ, Schiesser CH. Synthesis and antioxidant capacity of novel stable 5-tellurofuranose derivatives. Chem Commun (Camb) 2018; 54:2990-2993. [DOI: 10.1039/c8cc00565f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Novel stable tellurium-containing carbohydrates are prepared; these react very rapidly with two-electron oxidants and show promise as protective agents.
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Affiliation(s)
- Elton L. Borges
- Dept. of Biomedical Sciences
- University of Copenhagen
- Panum Institute
- Copenhagen
- Denmark
| | - Marta T. Ignasiak
- Dept. of Biomedical Sciences
- University of Copenhagen
- Panum Institute
- Copenhagen
- Denmark
| | - Yuliia Velichenko
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute
- The University of Melbourne
- Australia
| | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa-LASOL
- Universidade Federal de Pelotas
- Pelotas
- Brazil
| | - Craig A. Hutton
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute
- The University of Melbourne
- Australia
| | - Michael J. Davies
- Dept. of Biomedical Sciences
- University of Copenhagen
- Panum Institute
- Copenhagen
- Denmark
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Yin J, Wang B, Zhu X, Qu X, Huang Y, Lv S, Mu Y, Luo G. The Small Glutathione Peroxidase Mimic 5P May Represent a New Strategy for the Treatment of Liver Cancer. Molecules 2017; 22:E1495. [PMID: 28885589 PMCID: PMC6151655 DOI: 10.3390/molecules22091495] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 09/04/2017] [Accepted: 09/05/2017] [Indexed: 11/16/2022] Open
Abstract
Glutathione peroxidase (GPx) is an antioxidant protein containing selenium. Owing to the limitations of native GPx, considerable efforts have been made to develop GPx mimics. Here, a short 5-mer peptides (5P) was synthesized and characterized using matrix-assisted laser desorption ionization time-of-flight mass spectrometry. Enzyme coupled assays were used to evaluate GPx activity. The cell viability and apoptosis of H22 cells were tested, and mice bearing H22 cell-derived tumors were used to determine the effects of 5P on tumor inhibition. In comparison with other enzyme models, 5P provided a suitable substrate with proper catalytic site positions, resulting in enhanced catalytic activity. In our mouse model, 5P showed excellent inhibition of tumor growth and improved immunity. In summary, our findings demonstrated the design and synthesis of the small 5P molecule, which inhibited tumor growth and improved immunity. Notably, 5P could inhibit tumor growth without affecting normal growth. Based on these advantages, the novel mimic may have several clinical applications.
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Affiliation(s)
- Juxin Yin
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun 130000, China.
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310000, China.
| | - Bingmei Wang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun 130000, China.
| | - Xuejun Zhu
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun 130000, China.
| | - Xiaonan Qu
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun 130000, China.
| | - Yi Huang
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun 130000, China.
| | - Shaowu Lv
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun 130000, China.
| | - Ying Mu
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun 130000, China.
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310000, China.
| | - Guimin Luo
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, College of Life Science, Jilin University, Changchun 130000, China.
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Yin Y, Jiao S, Zhang R, Hu X, Shi Z, Huang Z. Construction of a smart microgel glutathione peroxidase mimic based on supramolecular self-assembly. SOFT MATTER 2015; 11:5301-5312. [PMID: 26053236 DOI: 10.1039/c5sm00671f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In an effort to construct smart artificial glutathione peroxidase (GPx) featuring high catalytic activity in an efficient preparation process, an artificial microgel GPx (PPAM-ADA-Te) has been prepared using a supramolecular host-guest self-assembly technique. Herein, 6,6'-telluro-bis(6-deoxy-β-cyclodextrin) (CD-Te-CD) was selected as a tellurium-containing host molecule, which also served as the crosslinker for the scaffold of the supramolecular microgel. And an adamantane-containing block copolymer (PPAM-ADA) was designed and synthesized as a guest building block copolymer. Subsequently, PPAM-ADA-Te was constructed through the self-assembly of CD-Te-CD and PPAM-ADA. The formation of this self-assembled construct was confirmed by dynamic light scattering, NMR, SEM and TEM. Notably, PPAM-ADA-Te not only exhibits a significant temperature responsive catalytic activity, but also features the characteristic saturation kinetics behaviour similar to that of a natural enzyme catalyst. We demonstrate in this paper that both the hydrophobic microenvironment and the crosslinker in this supramolecular microgel network played significant roles in enhancing and altering the temperature responsive catalytic behaviour. The successful construction of PPAM-ADA-Te not only provides a novel method for the preparation of microgel artificial GPx with high catalytic activity but also provides properties suitable for the future development of intelligent antioxidant drugs.
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Affiliation(s)
- Yanzhen Yin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
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Trindade C, Juchem ALM, de Albuquerque NRM, de Oliveira IM, Rosa RM, Guecheva TN, Saffi J, Henriques JAP. Antigenotoxic and antimutagenic effects of diphenyl ditelluride against several known mutagens in Chinese hamster lung fibroblasts. Mutagenesis 2015; 30:799-809. [DOI: 10.1093/mutage/gev037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Wang L, Zou H, Dong Z, Zhou L, Li J, Luo Q, Zhu J, Xu J, Liu J. Temperature-driven switching of the catalytic activity of artificial glutathione peroxidase by the shape transition between the nanotubes and vesicle-like structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4013-4018. [PMID: 24654792 DOI: 10.1021/la5008236] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Smart supramolecular nanoenzymes with temperature-driven switching property have been successfully constructed by the self-assembly of supra-amphiphiles formed by the cyclodextrin-based host-guest chemistry. The self-assembled nanostructures were catalyst-functionalized and thermosensitively-functionalized through conveniently linking the catalytic center of glutathione peroxidase and thermosensitive polymer to the host cyclodextrin molecules.The ON-OFF switches for the peroxidase activity by reversible transformation of nanostructures from tube to sphere have been achieved through changing the temperature. We anticipate that such intelligent enzyme mimics could be developed to use in an antioxidant medicine with controlled catalytic efficiency according to the needs of the human body in the future.
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Affiliation(s)
- Liang Wang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University , 2699 Qianjin Road, Changchun 130012, P. R. China
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Yin Y, Lang C, Hu X, Shi Z, Wang Y, Jiao S, Cai C, Liu J. Construction of a novel guest biomimetic glutathione peroxidase with solvent-dependent catalytic behavior by incorporating the active center into adamantyl molecule. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2014. [DOI: 10.1134/s1068162014010142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Xiao R, Zhou L, Dong Z, Gao Y, Liu J. A Photo-responsive Catalytic Vesicle with GPx Activity. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300695] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Jiao A, Yang N, Xu X, Jin Z. Study on the intermediate ions formed by glutathione peroxidase mimic 2,2'-ditellurobis(2-deoxy-β-cyclodextrin) by electrospray ionization mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:319-324. [PMID: 23239379 DOI: 10.1002/rcm.6455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 10/18/2012] [Accepted: 10/25/2012] [Indexed: 06/01/2023]
Abstract
RATIONALE 2,2'-Ditellurobis(2-deoxy-β-cyclodextrin) (2-TeCD) is one of the most well-known glutathione peroxidase (GPx) mimics. However, because the critical reaction intermediates had not previously been isolated or directly detected due to its short lifetime, the catalytic mechanism of 2-TeCD is not very clear and further experiments are needed to characterize each of the intermediates in the catalytic cycle. METHODS Using electrospray ionization mass (and tandem) spectrometry (ESI-MS and ESI-MS/MS) experiments, the decomposition of hydrogen peroxide at the expense of glutathione (GSH) catalyzed by 2-TeCD was monitored on-line. RESULTS The key intermediates were successfully intercepted and structurally characterized for the first time by coupling a microreactor on-line to the ESI ion source, which permitted the fast screening of intermediates directly from solution. CONCLUSIONS The catalytic mechanism of 2-TeCD catalysis has been elaborated based on mass spectrometric data and exerted its peroxidase activity via tellurol, tellurenic acid, and tellurosulfide, in analogy with natural GPX.
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Affiliation(s)
- Aiquan Jiao
- The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
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Thomas J, Dong Z, Dehaen W, Smet M. Selenium/Tellurium-Containing Hyperbranched Polymers: Effect of Molecular Weight and Degree of Branching on Glutathione Peroxidase-Like Activity. Macromol Rapid Commun 2012; 33:2127-32. [DOI: 10.1002/marc.201200519] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 08/31/2012] [Indexed: 11/07/2022]
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Jiao A, Yang N, Wang J, Xu X, Jin Z. Cyclodextrin-derived chalcogenides as glutathione peroxidase mimics and their protection of mitochondria against oxidative damage. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0156-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Ibrahim M, Hassan W, Anwar J, Nogueira CW, Teixeira Rocha JB. Fe(II) and sodium nitroprusside induce oxidative stress: a comparative study of diphenyl diselenide and diphenyl ditelluride with their napthyl analog. Drug Chem Toxicol 2011; 35:48-56. [PMID: 21919597 DOI: 10.3109/01480545.2011.588711] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Here, we compare the influence of molecular structural modifications of diphenyl diselenide (DPDS) and diphenyl ditelluride (DPDT) with their naphthalene analogs, 1-dinapthyl diselenide (1-NapSe)2, 2-dinapthyl diselenide (2-NapSe)2, 1-dinapthyl distelluride (1-NapTe)2, and 2-dinapthyl ditelluride (2-NapTe)2. Fe(II)-induced hepatic thiobarbituric acid reactive species (TBARS) was in the order [(2-NapTe)2] > [(2-NapSe)2] > [(DPDS)] > [(1-NapSe)2] > [(1-NapTe)2]> [(DPDT)]. For sodium nitroprusside (SNP)-induced hepatic TBARS, the order was [(2-NapTe)2] > [(DPDT)] > [(1-NapSe)2] > [(2-NapSe)2] > [(1-NapTe)2] > [(DPDS)]. For Fe(II) and SNP-induced renal TBARS, the orders were [(2-NapTe)2] > [(1-NapTe)2] = [(DPDT)] > [(1-NapSe)2] > [(2-NapSe)2] > [(DPDS)] and [(2-NapTe)2] > [(1-NapTe)2] > [(1-NapSe)2] > [(2-NapSe)2] > [(DPDS)] > [(DPDS)], respectively. The present investigation shows that DPDS was less potent and the change in the organic moiety from an aryl to napthyl group dramatically changed the potency of diselenides. These results suggest that minor changes in the organic moiety of aromatic diselenides can profoundly modify their antioxidant properties. In view of the fact that the pharmacological properties of organochalcogens are linked, at least in part, to their antioxidant properties, it becomes important to explore the pharmacological properties of dinaphtyl diselenides and ditellurides.
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Affiliation(s)
- Mohammad Ibrahim
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
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The organochalcogen 3-methyl-1-phenyl-2-(phenylseleno)oct-2-en-1-one induces oxidative stress in heart, liver, and kidney of rats. Mol Cell Biochem 2011; 355:167-72. [PMID: 21533766 DOI: 10.1007/s11010-011-0850-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 04/20/2011] [Indexed: 10/18/2022]
Abstract
The objective of this study was to investigate the in vitro effects of the organochalcogen 3-methyl-1-phenyl-2-(phenylseleno)oct-2-en-1-one on some parameters of oxidative stress in liver, kidney, and heart of 10-day-old rats. The homogenates of liver, kidney, and heart were incubated for 1 h in the absence (control) or in the presence of 1, 10, or 30 μM of the organoselenium and thiobarbituric acid reactive substances, carbonyl, and the activity of the antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) were measured. First, we tested the influence of the compound on 1,1-diphenyl-2-picrylhydrazyl (DPPH(•)) radical scavenging and verified that the organochalcogen did not have any antioxidant properties. We observed an increase of lipid peroxidation in all concentrations tested in heart and kidney, while in liver only in the concentrations of 10 and 30 μM. Moreover, we also verified an enhance of protein oxidation in the concentrations of 10 and 30 μM in kidney. On the other hand, the compound caused a reduction on the activity of CAT in heart (10 and 30 μM), liver (30 μM), and kidney (30 μM). The activity of SOD was increased in heart (10 and 30 μM), while in liver (30 μM) and in kidney (10 and 30 μM) the activity was reduced. Our findings indicate that this organoselenium compound induces oxidative stress in liver, heart, and kidney of immature rats, collaborating to the fact that these tissues are potential targets for the organochalcogen action.
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Synthesis and kinetic evaluation of a trifunctional enzyme mimic with a dimanganese active centre. J Inorg Biochem 2011; 105:283-8. [DOI: 10.1016/j.jinorgbio.2010.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2010] [Revised: 09/08/2010] [Accepted: 09/09/2010] [Indexed: 11/22/2022]
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Huang X, Yin Y, Liu J. Design of Artificial Selenoenzymes Based on Macromolecular Scaffolds. Macromol Biosci 2010; 10:1385-96. [DOI: 10.1002/mabi.201000134] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Yu S, Huang X, Miao L, Zhu J, Yin Y, Luo Q, Xu J, Shen J, Liu J. A supramolecular bifunctional artificial enzyme with superoxide dismutase and glutathione peroxidase activities. Bioorg Chem 2010; 38:159-64. [DOI: 10.1016/j.bioorg.2010.03.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 03/04/2010] [Accepted: 03/04/2010] [Indexed: 01/06/2023]
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Wang L, Lv S, Yan G, Luo G, Mu Y. UV-B induced thymocytes apoptosis blocked by dicyclodextrinyl ditelluride-A GPX mimic. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2010; 30:1-4. [PMID: 21787621 DOI: 10.1016/j.etap.2010.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Revised: 02/28/2010] [Accepted: 03/02/2010] [Indexed: 05/31/2023]
Abstract
Apoptosis is known to occur after ultraviolet-B (UV-B) radiation. It was found that UV-B could induce cell apoptosis and change cell cycle progression. After exposure to 100J/m(2) of UV-B, pre-G1 phase thymocytes were increased significantly and S phase thymocytes were decreased significantly. UV-B could also induce lipid peroxidation of thymocytes to have their MDA amount increased. These phenomena could be explained by production of reactive oxygen species (ROS), which were induced by UV-B radiation. In this study, we examined the protective effect of dicyclodextrinyl ditelluride (2-TeCD), the glutathione peroxidase (GPX, EC 1.11.1.9) mimics, on thymocytes apoptosis induced by UV-B radiation. The experimental results showed that 2-TeCD protects thymocytes from apoptosis. Moreover, 2-TeCD inhibits lipid peroxidation of thymocytes and displayed great antioxidant ability. Furthermore, 2-TeCD blocks the accumulation of wild-type-p53 (wt-p53) tumor-suppressor gene product caused by UV-B radiation.
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Affiliation(s)
- Linlin Wang
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310058, PR China; Key Laboratory for Molecular Enzymology and Enginnering of Ministry of Education, Jilin University, Changchun 130023, PR China
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Wu P, Xiao R, Zhang C, Zhou L, Luo Q, Xu J, Liu J. Photoregulating Catalytic Activity of Cyclodextrin-Based Artificial Glutathione Peroxidase by Charged Azobenzene. Catal Letters 2010. [DOI: 10.1007/s10562-010-0363-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Gay BM, Luchese C, Nogueira CW, Wendler P, Macedo A, Dos Santos AA. Antioxidant effect of functionalized alkyl-organotellurides: a studyin vitro. J Enzyme Inhib Med Chem 2010; 25:467-75. [DOI: 10.3109/14756360903257892] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Bibiana M. Gay
- Department of Chemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Cristiane Luchese
- Department of Chemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Cristina W. Nogueira
- Department of Chemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - P. Wendler
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
| | - Alexandra Macedo
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
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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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Bellia F, La Mendola D, Pedone C, Rizzarelli E, Saviano M, Vecchio G. Selectively functionalized cyclodextrins and their metal complexes. Chem Soc Rev 2009; 38:2756-81. [PMID: 19690752 DOI: 10.1039/b718436k] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclodextrins (CDs) are cyclic oligomers of alpha-1,4-linked D-glucopyranose. Due to their unique structure, marked by a chiral and hydrophobic cavity, CDs have been extensively used as chiral selectors and drug delivery systems. The functionalization both improve the CD applications and widen their use in many other fields, such as molecular recognition and enzyme mimicking. Moreover, the functionalization highly increases the metal binding properties of the CDs. This critical review is a report of recent applications concerning the CD derivatives and their metal complexes. The metal ion assists the host-guest interaction often increasing the properties of CDs to act as chiral receptors. Furthermore, it can act as a catalytic center in the mimicking of metalloenzymes based on functionalized CDs (164 references).
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Affiliation(s)
- Francesco Bellia
- Dipartimento di Scienze Chimiche, University of Catania, viale A. Doria 6, 95125, Catania, Italy
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Hassan W, Ibrahim M, Nogueira CW, Braga AL, Deobald AM, MohammadZai IU, Rocha JBT. Influence of pH on the reactivity of diphenyl ditelluride with thiols and anti-oxidant potential in rat brain. Chem Biol Interact 2009; 180:47-53. [DOI: 10.1016/j.cbi.2008.12.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Revised: 12/18/2008] [Accepted: 12/19/2008] [Indexed: 10/21/2022]
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Association mechanism of S-dinitrophenyl glutathione with two glutathione peroxidase mimics: 2, 2 cent-ditelluro- and 2, 2 cent-diseleno-bridged b-cyclodextrins. Molecules 2009; 14:904-16. [PMID: 19255549 PMCID: PMC6253948 DOI: 10.3390/molecules14030904] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2008] [Revised: 12/17/2008] [Accepted: 12/23/2008] [Indexed: 11/23/2022] Open
Abstract
Complex formation of the glutathione peroxidase mimics 2,2′-ditelluro-bridged β-cyclodextrin (1) and 2,2′-diseleno-bridged β-cyclodextrin (2), with S-substituted dinitrophenyl glutathione (3) were determined by ultraviolet-visible (UV-Vis) absorption spectroscopy in phosphate buffer (pH 7.4) and 1H-NMR spectroscopy. Molecular mechanics (MM2) modeling calculations were used to deduce a three-dimensional model for each complex. The dinitrophenyl (DNP) group of 3 appears to penetrate the cavity of β-cyclodextrin (β-CD) or 1, but it is located between the two secondary rims of 2. The complexes’ stability constants (Ks) from 19 to 37 °C, Gibbs free energy changes (ΔG°), ΔH° and TΔS° for 1:1 complexes of β-CD, 1 and 2 with ligand 3 as obtained from UV-Vis spectra were compared. The binding of 3 by the three cyclodextrin hosts generally decreased in the order of 1>2>β-CD. The binding ability of 3 by β-CD, 1 and 2 was discussed with regard to the size/shape-fit concept, the induced-fit interaction, and the cooperative interaction of the dual hydrophobic cavities. The binding ability of 1>2 indicated that the length of linkage between two cyclodextrin units plays a crucial role in the interaction with 3.
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Souza ACG, Luchese C, Santos Neto JS, Nogueira CW. Antioxidant effect of a novel class of telluroacetilene compounds: studies in vitro and in vivo. Life Sci 2009; 84:351-7. [PMID: 19167407 DOI: 10.1016/j.lfs.2008.12.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 11/20/2008] [Accepted: 12/29/2008] [Indexed: 10/21/2022]
Abstract
AIMS The effect of telluroacetylenes a-d on pharmacological assays was investigated in vitro. A second objective of this study was to investigate the antioxidant action of compound b against the oxidative damage induced by sodium nitroprusside (SNP) in mouse brain. MAIN METHODS In in vitro experiments, lipid peroxidation (LP) and protein carbonyl (PC) levels and delta-aminolevulinate dehydratase (delta-ALA-D) activity were carried out in rat brain homogenate. The thiol peroxidase-like activity and DPPH radical scavenging of telluroacetylenes a-d were investigated. In in vivo experiments, mice received SNP (0.335 micromol per site) intra cerebroventricular (i.c.v.) thirty minutes after oral administration of telluroacetylene b (10 mg/kg). After 1 h, animals were euthanized. The levels of LP and delta-ALA-D, catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), glutathione S-transferase (GST) activities were carried out in mouse brain homogenate. KEY FINDINGS Telluroacetylenes a-d, at low muM range, reduced LP and PC levels in rat brain homogenate. Telluroacetylenes a-d showed effect of scavenging DPPH radicals. delta-ALA-D activity was inhibited by telloruacetylenes a-d, at high muM range, in rat brain homogenate. Brains of mice treated with SNP showed an increase in LP and the reduction in delta-ALA-D, GR and GST activities. Telluroacetylene b protected against the oxidative stress caused by SNP in brain of rats. SIGNIFICANCE The results support an antioxidant effect of telluroacetylenes a-d in vitro. Telluroacetylene b protected against oxidative damage caused by SNP in mouse brain, suggesting an antioxidant effect of this compound.
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Affiliation(s)
- Ana Cristina G Souza
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
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Fenger TH, Marinescu LG, Bols M. Cyclodextrin ketones as oxidation catalysts: Investigation of bridged derivatives. Org Biomol Chem 2009; 7:933-43. [DOI: 10.1039/b814245a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chen Z, Lv J, Chen F, Lin L. Studies on telluric hyaluronic acid (TeHA): A novel antioxidant. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcatb.2008.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Abstract
Interstitial lung disease encompasses a large group of chronic lung disorders associated with excessive tissue remodeling, scarring, and fibrosis. The evidence of a redox imbalance in lung fibrosis is substantial, and the rationale for testing antioxidants as potential new therapeutics for lung fibrosis is appealing. Current animal models of lung fibrosis have clear involvement of ROS in their pathogenesis. New classes of antioxidant agents divided into catalytic antioxidant mimetics and antioxidant scavengers are being developed. The catalytic antioxidant class is based on endogenous antioxidant enzymes and includes the manganese-containing macrocyclics, porphyrins, salens, and the non-metal-containing nitroxides. The antioxidant scavenging class is based on endogenous antioxidant molecules and includes the vitamin E analogues, thiols, lazaroids, and polyphenolic agents. Numerous studies have shown oxidative stress to be associated with many interstitial lung diseases and that these agents are effective in attenuating fibroproliferative responses in the lung of animals and humans.
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Affiliation(s)
- Brian J Day
- Division of Environmental and Occupational Health Sciences, Department of Medicine, National Jewish Medical and Research Center, Denver, Colorado 80206, USA.
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27
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Dong ZY, Huang X, Mao SZ, Liang K, Liu JQ, Luo GM, Shen JC. Cyclodextrin-derived mimic of glutathione peroxidase exhibiting enzymatic specificity and high catalytic efficiency. Chemistry 2007; 12:3575-9. [PMID: 16491491 DOI: 10.1002/chem.200501098] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To elucidate the relationships between molecular recognition and catalytic ability, we chose three assay systems using three different thiol substrates, glutathione (GSH), 3-carboxyl-4-nitrobenzenethiol (CNBSH), and 4-nitrobenzenethiol (NBSH), to investigate the glutathione peroxidase (GPx) activities of 2,2'-ditellurobis(2-deoxy-beta-cyclodextrin) (2-TeCD) in the presence of a variety of structurally distinct hydroperoxides (ROOH), H2O2, tert-butyl peroxide (tBuOOH), and cumene peroxide (CuOOH), as the oxidative reagent. A comparative study of the three assay systems revealed that the cyclodextrin moiety of the GPx mimic 2-TeCD endows the molecule with selectivity for ROOH and thiol substrates, and hydrophobic interactions are the most important driving forces in 2-TeCD complexation. Furthermore, in the novel NBSH assay system, 2-TeCD can catalyze the reduction of ROOH about 3.4 x 10(5) times more efficiently than diphenyl diselenide (PhSeSePh), and its second-order rate constants for thiol are similar to some of those of native GPx. This comparative study confirms that efficient binding of the substrate is essential for the catalytic ability of the GPx mimic, and that NBSH is the preferred thiol substrate of 2-TeCD among the chosen thiol substrates. Importantly, the proposed mode of action of 2-TeCD imitates the role played by several possible noncovalent interactions between enzymes and substrates in influencing catalysis and binding.
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Affiliation(s)
- Ze-Yuan Dong
- Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun 130012, China
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28
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Lv SW, Wang XG, Mu Y, Zang TZ, Ji YT, Liu JQ, Shen JC, Luo GM. A novel dicyclodextrinyl diselenide compound with glutathione peroxidase activity. FEBS J 2007; 274:3846-54. [PMID: 17617230 DOI: 10.1111/j.1742-4658.2007.05913.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A 6A,6A'-dicyclohexylamine-6B,6B'-diselenide-bis-beta-cyclodextrin (6-CySeCD) was designed and synthesized to imitate the antioxidant enzyme glutathione peroxidase (GPX). In this novel GPX model, beta-cyclodextrin provided a hydrophobic environment for substrate binding within its cavity, and a cyclohexylamine group was incorporated into cyclodextrin in proximity to the catalytic selenium in order to increase the stability of the nucleophilic intermediate selenolate. 6-CySeCD exhibits better GPX activity than 6,6'-diselenide-bis-cyclodextrin (6-SeCD) and 2-phenyl-1,2-benzoisoselenazol-3(2H)-one (Ebselen) in the reduction of H(2)O(2), tert-butyl hydroperoxide and cumenyl hydroperoxide by glutathione, respectively. A ping-pong mechanism was observed in steady-state kinetic studies on 6-CySeCD-catalyzed reactions. The enzymatic properties showed that there are two major factors for improving the catalytic efficiency of GPX mimics. First, the substrate-binding site should match the size and shape of the substrate and second, incorporation of an imido-group increases the stability of selenolate in the catalytic cycle. More efficient antioxidant ability compared with 6-SeCD and Ebselen was also seen in the ferrous sulfate/ascorbate-induced mitochondria damage system, and this implies its prospective therapeutic application.
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Affiliation(s)
- Shao-Wu Lv
- Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun, China
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29
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Avila DS, Gubert P, Dalla Corte CL, Alves D, Nogueira CW, Rocha JBT, Soares FAA. A biochemical and toxicological study with diethyl 2-phenyl-2-tellurophenyl vinylphosphonate in a sub-chronic intraperitoneal treatment in mice. Life Sci 2007; 80:1865-72. [PMID: 17383683 DOI: 10.1016/j.lfs.2007.02.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2006] [Revised: 02/06/2007] [Accepted: 02/15/2007] [Indexed: 11/25/2022]
Abstract
Diethyl-2-phenyl-2-tellurophenyl vinylphosphonate (DPTVP) is an organotellurium compound with low toxicity after subcutaneous administration in mice. This study evaluated possible in vivo and ex vivo toxicological effects of daily injections of DPTVP for 12 days in mice, using the intraperitoneal administration. This route potentially increases the pharmacokinetics of absorption, distribution, metabolism and toxicity of DPTVP. Treatment with DPTVP (0, 30, 50, 75, 100, 250, 350 or 500 micromol/kg) were not associated with mortality or body weight loss. Nevertheless, the liver and liver-to-body weight ratio increased in groups treated with 350 and 500 micromol/kg of DPTVP. However, plasmatic aspartate and alanine aminotransferase activities (classical markers of hepatotoxicity) were not increased after diethyl-2-phenyl-2-tellurophenyl vinylphosphonate administration. Hepatic, renal and cerebral thiobarbituric acid reactive substances (TBARS), delta-ALA-D activity and Vitamin C levels were not modified after DPTVP treatment. Renal and hepatic superoxide dismutase (SOD) and catalase (CAT) were unchanged after DPTVP treatment. Conversely, SOD activity significantly increased in brain in groups treated with 50, 75, 100 and 500 micromol/kg of DPTVP treated groups. Our findings corroborates that brain is a potential target for organochalcogen action. The absence of severe overt signs of toxicity after sub-chronic exposure to DPTVP reinforces the necessity for more detailed pharmacological studies concerning this new organotellurium compound.
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Affiliation(s)
- Daiana Silva Avila
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, CEP 97105-900, Santa Maria, RS, Brazil
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Bjerre J, Hauch Fenger T, Marinescu LG, Bols M. Synthesis of Some Trifluoromethylated Cyclodextrin Derivatives and Analysis of Their Properties as Artificial Glycosidases and Oxidases. European J Org Chem 2007. [DOI: 10.1002/ejoc.200600762] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Savegnago L, Borges VC, Alves D, Jesse CR, Rocha JBT, Nogueira CW. Evaluation of antioxidant activity and potential toxicity of 1-buthyltelurenyl-2-methylthioheptene. Life Sci 2006; 79:1546-52. [PMID: 16716363 DOI: 10.1016/j.lfs.2006.04.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2006] [Revised: 04/14/2006] [Accepted: 04/26/2006] [Indexed: 11/29/2022]
Abstract
The aim of the present study was to evaluate pharmacological and toxicological properties of 1-buthyltelurenyl-2-methylthioheptene (compound 1). In vitro, compound 1 at 1 microM was effective in reducing lipid peroxidation induced by Fe/EDTA. Compound 1 presented neither thiol peroxidase nor thiol oxidase activity and did not change delta-ALA-D (delta-aminolevulinate dehydratase) activity (10-400 microM). Calculated LD(50) of compound 1, administered by oral route, was 65.1 micromol/kg. Rats treated with compound 1 did not reveal any motor impairment in the open field. Hepatic, renal and cerebral lipid peroxidation in treated rats did not differ from those in control rats. Conversely, 0.5 micromol/kg of compound 1 decreased lipid peroxidation in spleen. Delta-ALA-D activity in liver and spleen was inhibited in rats treated with the higher dose of compound 1 but no significant differences were detected in renal delta-ALA-D activity. AST (aspartate aminotransferase) and ALT (alanine aminotransferase) activities as well as urea and creatinine levels were increased by high doses of compound 1 (50-75 micromol/kg). Compound 1 induced a significant decrease in plasma triglyceride levels but none of the doses tested changed the cholesterol level. This is a promising compound for more detailed pharmacological studies involving organotellurium compounds.
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Affiliation(s)
- Lucielli Savegnago
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, RS, Brazil
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de Avila DS, Beque MC, Folmer V, Braga AL, Zeni G, Nogueira CW, Soares FAA, Rocha JBT. Diethyl 2-phenyl-2 tellurophenyl vinylphosphonate: An organotellurium compound with low toxicity. Toxicology 2006; 224:100-7. [PMID: 16723180 DOI: 10.1016/j.tox.2006.04.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2005] [Revised: 02/23/2006] [Accepted: 04/18/2006] [Indexed: 11/30/2022]
Abstract
It is well-known that organotellurium compounds can have antioxidant activity in vitro, but in vivo these compounds can be potentially toxic to rodents. Here we investigated the potential in vitro and ex vivo toxicity of a new beta-organochalcogenyl vinylphosphonate, the diethyl 2-phenyl-2 tellurophenyl vinylphosphonate. The in vitro antioxidant activity of this organotellurium compound was also investigated. In vitro, the rate of dithiotreitol (DTT) oxidation was increased and the activity of cerebral, renal and hepatic delta-aminolevulinate dehydratase (delta-ALA-D) was decreased by diethyl 2-phenyl-2-tellurophenyl vinylphosphonate (120-1200 microM), indicating that this compound oxidize-SH groups. The antioxidant activity was also observed in brain, liver and kidney, in very low concentrations (0.4, 1.0, 4.0, 10.0 and 40.0 microM), and this capacity was comparable to the antioxidant standard organotellurium compound, diphenyl ditelluride. In vivo, delta-ALA-D activity in liver, kidney and brain of mice treated for 12 days with dimethylsulfoxide (DMSO) as vehicle, 25, 75 or 250 micromol/kg of diethyl 2-phenyl-2-tellurophenyl vinylphosphonate was not affected. Furthermore, only one animal treated with the highest dose died, whereas all animals treated with diphenyl ditteluride died in the fourth day. These results suggest that this novel organotellurium compound interacts with the sulfhydryl groups, however only at higher doses when compared with diphenyl ditelluride. Since diethyl 2-phenyl-2 tellurophenyl vinylphosphonate had low toxicity to mice after sub-chronic exposure, it becomes important to investigate its possible pharmacological properties.
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Affiliation(s)
- Daiana Silva de Avila
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, CEP 97105-900 Santa Maria, RS, Brazil
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33
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1H NMR Study on the Inclusion Complex of Glutathione with a Glutathione Peroxidase Mimic, 2,2′-ditelluro-bridged β-cyclodextrins. J INCL PHENOM MACRO 2006. [DOI: 10.1007/s10847-005-6289-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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34
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Rousseau C, Christensen B, Bols M. Artificial Epoxidase II. Synthesis of Cyclodextrin Ketoesters and Epoxidation of Alkenes. European J Org Chem 2005. [DOI: 10.1002/ejoc.200500034] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Dong Z, Liu J, Mao S, Huang X, Yang B, Ren X, Luo G, Shen J. Aryl Thiol Substrate 3-Carboxy-4-Nitrobenzenethiol Strongly Stimulating Thiol Peroxidase Activity of Glutathione Peroxidase Mimic 2, 2'-Ditellurobis(2-Deoxy-β-Cyclodextrin). J Am Chem Soc 2004; 126:16395-404. [PMID: 15600341 DOI: 10.1021/ja045964v] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Artificial glutathione peroxidase (GPx) model 2, 2'-ditellurobis(2-deoxy-beta-cyclodextrin) (2-TeCD) which has the desirable properties exhibited high substrate specificity and remarkably catalytic efficiency when 3-carboxy-4-nitrobenzenethiol (ArSH) was used as a preferential thiol substrate. The complexation of ArSH with beta-cyclodextrin was investigated through UV spectral titrations, fluorescence spectroscopy, 1H NMR and molecular simulation, and these results indicated that ArSH fits well to the size of the cavity of beta-cyclodextrin. Furthermore, 2-TeCD was found to catalyze the reduction of cumene peroxide (CuOOH) by ArSH 200,000-fold more efficiently than diphenyl diselenide (PhSeSePh). Its steady-state kinetics was studied and the second rate constant kmax/KArSH was found to be 1.05 x 10(7) M(-1) min(-1) and similar to that of natural GPx. Moreover, the kinetic data revealed that the catalytic efficiency of 2-TeCD depended strongly upon the competitive recognition of both substrates for 2-TeCD. The catalytic mechanism of 2-TeCD catalysis agreed well with a ping-pong mechanism, in analogy with natural GPx, and might exert its thiol peroxidase activity via tellurol, tellurenic acid, and tellurosulfide.
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Affiliation(s)
- Zeyuan Dong
- Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun 130012, Peoples Republic of China
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36
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Nogueira CW, Zeni G, Rocha JBT. Organoselenium and Organotellurium Compounds: Toxicology and Pharmacology. Chem Rev 2004; 104:6255-85. [PMID: 15584701 DOI: 10.1021/cr0406559] [Citation(s) in RCA: 1409] [Impact Index Per Article: 70.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Cristina W Nogueira
- Laboratório de Síntese, Reatividade e Avaliacão Farmacológica e Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria, CEP 97105-900 Rio Grande do Sul, Brazil
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37
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Musaev DG, Hirao K. Reactivity of [1,2-Benzisotellurazol-3(2H)-one] with Peroxynitrous Acid: Comparison with Ebselen Analogues. J Phys Chem A 2003. [DOI: 10.1021/jp035969z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Djamaladdin G. Musaev
- Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322
| | - Kimihiko Hirao
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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Sakimoto Y, Hirao K, Musaev DG. Reactivity of Ebtellur Derivatives with the Peroxynitrite Anion: Comparison with Their Ebselen Analogues. J Phys Chem A 2003. [DOI: 10.1021/jp035191h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Yukiko Sakimoto
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Kimihiko Hirao
- Department of Applied Chemistry, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Djamaladdin G. Musaev
- Cherry L. Emerson Center for Scientific Computation, Emory University, Atlanta, Georgia 30322
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