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Masuda R, Karasaki T, Sase S, Kuwano S, Goto K. Highly Electrophilic Intermediates in the Bypass Mechanism of Glutathione Peroxidase: Synthesis, Reactivity, and Structures of Selenocysteine-Derived Cyclic Selenenyl Amides. Chemistry 2023; 29:e202302615. [PMID: 37738074 DOI: 10.1002/chem.202302615] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 09/23/2023]
Abstract
Selenocysteine (Sec)-derived cyclic selenenyl amides, formed by the intramolecular cyclization of Sec selenenic acids (Sec-SeOHs), have been postulated to function as protective forms in the bypass mechanism of glutathione peroxidase (GPx). However, their chemical properties have not been experimentally elucidated in proteins or small-molecule systems. Recently, we reported the first nuclear magnetic resonance observation of Sec-SeOHs and their cyclization to the corresponding cyclic selenenyl amides by using selenopeptide model systems incorporated in a molecular cradle. Herein, we elucidate the structures and reactivities of Sec-derived cyclic selenenyl amides. The crystal structures and reactions toward a cysteine thiol or a 1,3-diketone-type chemical probe indicated the highly electrophilic character of cyclic selenenyl amides. This suggests that they can serve not only as protective forms to suppress the inactivation of Sec-SeOHs in GPx but also as highly electrophilic intermediates in the reactions of selenoproteins.
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Affiliation(s)
- Ryosuke Masuda
- School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Takafumi Karasaki
- School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Shohei Sase
- School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Satoru Kuwano
- School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Kei Goto
- School of Science, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
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2
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Yadav M, Singh VP. Glutathione Peroxidase-like Antioxidant Activity of 1,3-Benzoselenazoles: Synthesis and In Silico Molecular Docking Studies as Pancreatic Lipase Inhibitors. J Org Chem 2023; 88:16934-16948. [PMID: 38008916 DOI: 10.1021/acs.joc.3c01762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
The synthesis of 1,3-benzoselenazoles was achieved by the reaction of corresponding bis[3-amino-N-(p-tolyl)benzamide-2-yl] diselenide, bis[3-amino-N-(4-methoxyphenyl)benzamide-2-yl] diselenide, and bis[3-amino-N-(4-(dimethylamino)phenyl) benzamide-2-yl] diselenide with aryl aldehydes. The 1,3-benzoselenazoles continued to exist as planar molecules due to the presence of secondary Se···O interactions as revealed by the single-crystal X-ray analysis. The presence of secondary Se···O interactions in 1,3-benzoselenazoles was confirmed using natural bond orbital (NBO) and atoms in molecules (AIM) calculations. Nucleus-independent chemical shift (NICS) values suggested the presence of aromatic character in a five-membered benzoselenazole heterocyclic ring. The glutathione peroxidase (GPx)-like antioxidant activity of all 1,3-benzoselenazoles was assessed using a thiophenol assay, exhibiting greater antioxidant activity than Ph2Se2 used as a reference. The most active catalyst carrying a strong electron-donating group (-NMe2) at the ortho-position to the benzoselenazole ring was further investigated at different concentrations of thiophenol, H2O2, and 1,3-benzoselenazoles as catalyst for determining their catalytic parameters. Moreover, the potential applications of all 1,3-benzoselenazoles against pancreatic lipase (PL) have been identified using in silico interactions between the active sites of the 1LPB protein as evaluated using a molecular docking study.
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Affiliation(s)
- Manisha Yadav
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Vijay P Singh
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
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3
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Abstract
Glutathione peroxidase 1 (GPx1) is an important cellular antioxidant enzyme that is found in the cytoplasm and mitochondria of mammalian cells. Like most selenoenzymes, it has a single redox-sensitive selenocysteine amino acid that is important for the enzymatic reduction of hydrogen peroxide and soluble lipid hydroperoxides. Glutathione provides the source of reducing equivalents for its function. As an antioxidant enzyme, GPx1 modulates the balance between necessary and harmful levels of reactive oxygen species. In this review, we discuss how selenium availability and modifiers of selenocysteine incorporation alter GPx1 expression to promote disease states. We review the role of GPx1 in cardiovascular and metabolic health, provide examples of how GPx1 modulates stroke and provides neuroprotection, and consider how GPx1 may contribute to cancer risk. Overall, GPx1 is protective against the development and progression of many chronic diseases; however, there are some situations in which increased expression of GPx1 may promote cellular dysfunction and disease owing to its removal of essential reactive oxygen species.
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Affiliation(s)
- Diane E Handy
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA.
| | - Joseph Loscalzo
- Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA.
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Musalov MV, Potapov VA, Maylyan AA, Khabibulina AG, Zinchenko SV, Amosova SV. Selenium Dihalides Click Chemistry: Highly Efficient Stereoselective Addition to Alkynes and Evaluation of Glutathione Peroxidase-Like Activity of Bis( E-2-halovinyl) Selenides. Molecules 2022; 27:molecules27031050. [PMID: 35164315 PMCID: PMC8838769 DOI: 10.3390/molecules27031050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/29/2022] [Accepted: 01/31/2022] [Indexed: 11/23/2022]
Abstract
Highly efficient stereoselective syntheses of novel bis(E-2-chlorovinyl) selenides and bis(E-2-bromovinyl) selenides in quantitative yields by reactions of selenium dichloride and dibromide with alkynes were developed. The reactions proceeded at room temperature as anti-addition giving products exclusively with (E)-stereochemistry. The glutathione peroxidase-like activity of the obtained products was estimated and compounds with high activity were found. The influence of substituents in the products on their glutathione peroxidase-like activity was discussed.
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Liu H, Li Y, Sun S, Xin Q, Liu S, Mu X, Yuan X, Chen K, Wang H, Varga K, Mi W, Yang J, Zhang XD. Catalytically potent and selective clusterzymes for modulation of neuroinflammation through single-atom substitutions. Nat Commun 2021; 12:114. [PMID: 33414464 PMCID: PMC7791071 DOI: 10.1038/s41467-020-20275-0] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 11/17/2020] [Indexed: 01/29/2023] Open
Abstract
Emerging artificial enzymes with reprogrammed and augmented catalytic activity and substrate selectivity have long been pursued with sustained efforts. The majority of current candidates have rather poor catalytic activity compared with natural molecules. To tackle this limitation, we design artificial enzymes based on a structurally well-defined Au25 cluster, namely clusterzymes, which are endowed with intrinsic high catalytic activity and selectivity driven by single-atom substitutions with modulated bond lengths. Au24Cu1 and Au24Cd1 clusterzymes exhibit 137 and 160 times higher antioxidant capacities than natural trolox, respectively. Meanwhile, the clusterzymes demonstrate preferential enzyme-mimicking catalytic activities, with Au25, Au24Cu1 and Au24Cd1 displaying compelling selectivity in glutathione peroxidase-like (GPx-like), catalase-like (CAT-like) and superoxide dismutase-like (SOD-like) activities, respectively. Au24Cu1 decreases peroxide in injured brain via catalytic reactions, while Au24Cd1 preferentially uses superoxide and nitrogenous signal molecules as substrates, and significantly decreases inflammation factors, indicative of an important role in mitigating neuroinflammation.
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Affiliation(s)
- Haile Liu
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China
| | - Yonghui Li
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China
| | - Si Sun
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China
| | - Qi Xin
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China
| | - Shuhu Liu
- Beijing Synchrotron Radiation Facility (BSRF), Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS), 100049, Beijing, China
| | - Xiaoyu Mu
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China
| | - Xun Yuan
- School of Materials Science and Engineering, Qingdao University of Science and Technology, 266042, Qingdao, Shandong, China
| | - Ke Chen
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China
| | - Hao Wang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China
| | - Kalman Varga
- Department of Physics and Astronomy, Vanderbilt University, Nashville, TN, 37235, USA
| | - Wenbo Mi
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China
| | - Jiang Yang
- School of Medicine, Sun Yat-sen University, 510060, Guangzhou, China
| | - Xiao-Dong Zhang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, 300350, Tianjin, China.
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, 300072, Tianjin, China.
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Abstract
Significance: Selenenyl sulfides (RSeSRs) and thioseleninic acids (RSeSHs) are the monoselenium (Se) analogs of disulfides and persulfides that contain Se-S bonds. These bonds are found in several antioxidant-regenerating enzymes as derivatives of selenocysteine, making them an important player in redox biology as it pertains to sulfur redox regulation. Recent Advances: Mechanistic studies of redox-regulating selenoenzymes such as thioredoxin reductase and glutathione peroxidase suggest crucial Se-S bonds in the active sites. Peptide models and small-molecule mimics of these active sites have been prepared to study their fundamental chemistry. These advances help pave the road to better understand the functions of the Se-S bond in the body. Critical Issues: The Se-S bond is unstable at atmospheric temperatures and pressures. Therefore, studying their properties proposes a major challenge. Currently, there are no trapping reagents specific to RSeSRs or RSeSHs, making their presence, identity, and fates in biological environments difficult to track. Future Directions: Further understanding of the fundamental chemistry/biochemistry of RSeSRs and RSeSHs is needed to understand what their intracellular targets are and to what extent they impact signaling. Besides antioxidant regeneration and peroxide radical reduction, the roles of RSeSR and RSeSHs in other systems need to be further explored.
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Affiliation(s)
- Akil Hamsath
- Department of Chemistry, Washington State University, Pullman, Washington, USA
| | - Ming Xian
- Department of Chemistry, Washington State University, Pullman, Washington, USA
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Zhang H, Luan L, Bi M, Zhao L, Yuan L, Feng J, Liu R. In vivo and in vitro studies on inactivation of selenium containing protein- glutathione peroxidase 3 in mice nephrocytes caused by lead. Ecotoxicol Environ Saf 2020; 203:111008. [PMID: 32678766 DOI: 10.1016/j.ecoenv.2020.111008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 07/03/2020] [Accepted: 07/04/2020] [Indexed: 05/20/2023]
Abstract
Glutathione peroxidases (Gpxs) play vital roles in elimination of hydroperoxide and other reactive oxygen species through catalyzing reduced glutathione to protect from oxidative stress caused by heavy metals such as lead. Among the family of Gpxs, Gpx3 is the only extracellular enzyme synthesized in the kidney and actively secreted into the plasma. This study investigated mechanisms of lead-induced GPx3 inactivation both at the animal and molecular levels. Six-week-old mice were randomly divided into 4 groups, and exposed to different lead concentrations (0, 1, 2 and 4 g/L) in their drinking water for 4 weeks. Contents of GPx3 in blood serum were tested by enzyme-linked immunosorbent assay (ELISA) and the mRNA levels of Gpx3 in mice nephrocytes were determined by quantitative real-time PCR (qPCR), both of which showed significantly inhibited at higher lead concentrations accompanied by the decreased Gpx3 activities and the elevated levels of malondialdehyde (MDA) in nephrocytes, which indicated that lead could induce strongly oxidative stress through affecting Gpx3 function. So we further investigated molecular mechanisms of GPx3 inactivation caused by lead with multiple spectroscopic techniques, isothermal titration calorimetry (ITC) and molecular docking studies in vitro. Results showed that lead statically quenched GPx3 fluorescence by tightly binding to the structural domain of GPx3 in a 3:1 ratio with high binding affinity (K = 3.1(±0.087) × 107 mol-1). Further investigation of the conformation of GPx3 by UV-visible spectroscopy and circular dichroism (CD) spectroscopy indicated that lead changed the secondary structure of GPx3 by loosening the GPx3 skeleton and decreasing the hydrophobicity around tryptophan residues. This work proved in vivo and in vitro experiments that lead could induce oxidative stress in mice nephrocytes by interacting with GPx3.
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Affiliation(s)
- Hao Zhang
- Laboratory of Immunology for Environment and Health, School of Pharmaceutical Science, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, PR China; Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, 445000, PR China
| | - Lingyu Luan
- Laboratory of Immunology for Environment and Health, School of Pharmaceutical Science, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, PR China
| | - Mengjiao Bi
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, Qingdao, 266237, PR China
| | - Lining Zhao
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, Qingdao, 266237, PR China
| | - Lin Yuan
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, 445000, PR China
| | - Jia Feng
- Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Minda Hospital of Hubei Minzu University, Enshi, 445000, PR China
| | - Rutao Liu
- School of Environmental Science and Engineering, China-America CRC for Environment & Health, Shandong University, Qingdao, 266237, PR China.
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8
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Aguiñiga-Sánchez I, Soto-Hernández M, Cadena-Iñiguez J, Suwalsky M, Colina JR, Castillo I, Rosado-Pérez J, Mendoza-Núñez VM, Santiago-Osorio E. Phytochemical Analysis and Antioxidant and Anti-Inflammatory Capacity of the Extracts of Fruits of the Sechium Hybrid. Molecules 2020; 25:molecules25204637. [PMID: 33053734 PMCID: PMC7587193 DOI: 10.3390/molecules25204637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/16/2020] [Accepted: 10/02/2020] [Indexed: 11/16/2022] Open
Abstract
In addition to their own antioxidants, human cells feed on external antioxidants, such as the phenolic compounds of fruits and vegetables, which work together to keep oxidative stress in check. Sechium edule, an edible species of chayote, has phenolic compounds with antioxidant activity and antineoplastic activity. A Sechium hybrid shows one thousand times greater antineoplastic activity than edible species, but its antioxidant and anti-inflammatory activities and the content of phenolic compounds are unknown. The aim of this study was to determine the antioxidant and anti-inflammatory capacity of the extract of fruits of the Sechium hybrid in vitro and in vivo. Phytochemical analysis using HPLC showed that the extract of the Sechium hybrid has at least 16 phenolic compounds; galangin, naringenin, phloretin and chlorogenic acid are the most abundant. In an in vitro assay, this extract inhibited 2,2-diphenyl-L-picrylhydrazyl (DPPH) activity and protected the dimyristoylphosphatidylethanolamine (DMPE) phospholipid model cell membrane from oxidation mediated by hypochlorous acid (HClO). In vivo, it was identified that the most abundant metabolites in the extract enter the bloodstream of the treated mice. On the other hand, the extract reduces the levels of tumor necrosis factor alpha (TNFα), interferon gamma (IFNγ), and interleukin-6 (IL-6) but increases interleukin-10 (IL-10) and glutathione peroxidase levels. Our findings indicate that intake of the fruits of the Sechium hybrid leads to antioxidant and anti-inflammatory effects in a mouse model. Therefore, these results support the possibility of exploring the clinical effect of this hybrid in humans.
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Affiliation(s)
- Itzen Aguiñiga-Sánchez
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico;
- Interdisciplinary Research Group of Sechium edule in Mexico (GISeM), Texcoco, Agustín Melgar 10 Street, 56153 Texcoco, Mexico; (M.S.-H.); (J.C.-I.)
| | - Marcos Soto-Hernández
- Interdisciplinary Research Group of Sechium edule in Mexico (GISeM), Texcoco, Agustín Melgar 10 Street, 56153 Texcoco, Mexico; (M.S.-H.); (J.C.-I.)
- Postgraduate College, Campus Montecillo, Km 36.5 Mexico-Texcoco Highway, 56230 Texcoco, Mexico
| | - Jorge Cadena-Iñiguez
- Interdisciplinary Research Group of Sechium edule in Mexico (GISeM), Texcoco, Agustín Melgar 10 Street, 56153 Texcoco, Mexico; (M.S.-H.); (J.C.-I.)
- Postgraduate College, Campus San Luis Potosí, Iturbide No. 73 Street, Salinas de Hidalgo, 78600 San Luis Potosí, Mexico
| | - Mario Suwalsky
- Facultad de Medicina, Universidad Católica de la Santísima Concepción, 4090541 Concepción, Chile;
| | - José R. Colina
- Facultad de Ciencias Químicas, Universidad de Concepción, 4070386 Concepción, Chile;
| | - Ivan Castillo
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, 04510 Mexico City, Mexico;
| | - Juana Rosado-Pérez
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico;
| | - Víctor M. Mendoza-Núñez
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico;
- Correspondence: (V.M.M.-N.); (E.S.-O.)
| | - Edelmiro Santiago-Osorio
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, 09230 Mexico City, Mexico;
- Interdisciplinary Research Group of Sechium edule in Mexico (GISeM), Texcoco, Agustín Melgar 10 Street, 56153 Texcoco, Mexico; (M.S.-H.); (J.C.-I.)
- Correspondence: (V.M.M.-N.); (E.S.-O.)
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9
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Abstract
Aim of this work was to determine the effects of dietary intake vitamin E and Se on lipid peroxidation (LPO) as Thiobarbituric acid reactive substances (TBARS) and on the antioxidative defense mechanisms in heart tissues of rats treated with high doses of prednisolone. 250 adult male Wistar rats were randomly divided into 5 groups and fed with normal diet. Additionally groups 3, 4, and 5 received a daily supplement in their drinking water of 20 mg vitamin E, 0.3 mg Se, and a combination of vitamin E and Se (20 mg/ 0.3 mg), respectively, for 30 days. For 3 d subsequently, control group was treated with placebo, and remaining four groups were injected intramuscularly with 100 mg/kg prednisolone. After last administration of prednisolone, 10 rats from each group were killed at 4, 8, 12, 24, and 48 h and the activities of antioxidant enzymes and the levels of GSH and TBARS were measured. GSH-Px, CAT activities and GSH levels decreased starting from 4th hour to 48% and 65% of control levels by 24th hour, respectively and it reincreased to control levels at 48th hour in the prednisolone group (p < 0.001, p < 0.001). In addition, prednisolone administration led 2-fold increase in heart TBARS levels at 24th hour (p < 0.001). E vitamins and Se inhibited the increase in heart TBARS and the decrease in antioxidative enzymes levels. Therefore, It is concluded that vitamin E and Se may have a preventive role in decreasing the increase of TBARS caused by prednisolone administration in our study.
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Affiliation(s)
- Ebru Bardas
- Department of Medical Physiology, Faculty of Medicine, University of Erzincan, Erzincan, Turkey
| | - Yusuf Kemal Arslan
- Department of Biostatistics, Faculty of Medicine, University of Erzincan, Erzincan, Turkey
| | - Seher Polat
- Department of Medical Genetics, Faculty of Medicine, University of Erzincan, Erzincan, Turkey
| | - Mine Erisir
- Department of Biochemistry, Faculty of Veterinary Medicine, University of Firat, Elazıg, Turkey
| | - Gözde Atila Uslu
- Department of Physiology, Faculty of Veterinary Medicine, University of Kafkas, Kars, Turkey
| | - Nihal Cetin
- Department of Pharmacology, Faculty of Medicine, University of Selcuk, Konya, Turkey
| | - Betul Cicek
- Department of Medical Physiology, Faculty of Medicine, University of Erzincan, Erzincan, Turkey
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Sefi M, Chaâbane M, Elwej A, Bejaoui S, Marrekchi R, Jamoussi K, Gouiaa N, Boudawara Sellami T, El Cafsi M, Zeghal N, Soudani N. Zinc alleviates maneb-induced kidney injury in adult mice through modulation of oxidative stress, genotoxicity, and histopathological changes. Environ Sci Pollut Res Int 2020; 27:8091-8102. [PMID: 31897980 DOI: 10.1007/s11356-019-07175-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 11/25/2019] [Indexed: 06/10/2023]
Abstract
Zinc is one of the important essential trace minerals to human health due to its antioxidant properties. The present study was conducted to elucidate its potential protective role against maneb-induced nephrotoxicity. For this purpose, animals were randomly divided into four groups of six each. Mice of group I (negative controls) have received daily 0.5 ml of distilled water, a solvent of maneb. Mice of group II (MB) have received 30 mg/kg bw of maneb daily by intraperitoneal way. Mice of group III (MB + Zn) have received the same dose of maneb as group II, along with ZnSO4 (30 mg/kg bw) daily. Mice of group IV (Zn), considered as positive controls, have received the same dose of ZnSO4 as group III daily. Our results revealed that ZnSO4 co-administration to maneb-treated mice decreased kidney levels of malondialdehyde, hydrogen peroxide, protein carbonyls, and advanced oxidation protein products; the levels of non-enzymatic antioxidants like vitamin C, glutathione, and metallothionein. It recovered the alteration of antioxidant enzyme activities (catalase, superoxide dismutase, and glutathione peroxidase) and attenuated DNA fragmentation. Furthermore, this essential trace element was also able to alleviate kidney biomarkers' alterations by lowering plasma levels of creatinine, urea, uric acid, and lactate dehydrogenase. In addition, the histopathological changes induced by maneb were improved following zinc administration. Our results indicated that zinc might be beneficial against maneb-induced renal oxidative damage in mice.
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Affiliation(s)
- Mediha Sefi
- Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sciences Faculty of Sfax, Sfax, Tunisia.
- Ecology, Biology and physiology laboratory of aquatic organisms, Department of Biological Sciences, Sciences Faculty of Tunis, University Tunis El Manar, 2092, Tunis, Tunisia.
| | - Mariem Chaâbane
- Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sciences Faculty of Sfax, Sfax, Tunisia
| | - Awatef Elwej
- Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sciences Faculty of Sfax, Sfax, Tunisia
| | - Safa Bejaoui
- Ecology, Biology and physiology laboratory of aquatic organisms, Department of Biological Sciences, Sciences Faculty of Tunis, University Tunis El Manar, 2092, Tunis, Tunisia
| | - Rim Marrekchi
- Biochemistry Laboratory, Department of Biochemistry, CHU Hedi Chaker, University of Sfax, 3029, Sfax, Tunisia
| | - Kamel Jamoussi
- Biochemistry Laboratory, Department of Biochemistry, CHU Hedi Chaker, University of Sfax, 3029, Sfax, Tunisia
| | - Naourez Gouiaa
- Histopathology Laboratory, Department of Anatomo-pathology, CHU Habib Bourguiba, University of Sfax, Sfax, Tunisia
| | - Tahia Boudawara Sellami
- Histopathology Laboratory, Department of Anatomo-pathology, CHU Habib Bourguiba, University of Sfax, Sfax, Tunisia
| | - M'hamed El Cafsi
- Ecology, Biology and physiology laboratory of aquatic organisms, Department of Biological Sciences, Sciences Faculty of Tunis, University Tunis El Manar, 2092, Tunis, Tunisia
| | - Najiba Zeghal
- Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sciences Faculty of Sfax, Sfax, Tunisia
| | - Nejla Soudani
- Animal Physiology Laboratory, Department of Life Sciences, University of Sfax, Sciences Faculty of Sfax, Sfax, Tunisia
- Ecology, Biology and physiology laboratory of aquatic organisms, Department of Biological Sciences, Sciences Faculty of Tunis, University Tunis El Manar, 2092, Tunis, Tunisia
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11
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Xu L, Yang M, Fu H, Sun S, Qiao H, Zhang W, Gong Y, Jiang S, Xiong Y, Jin S, Wu Y. Molecular cloning, expression, and in situ hybridization analysis of MnGPx-3 and MnGPx-4 from oriental river prawn, Macrobrachium nipponense, in response to hypoxia and reoxygenation. PLoS One 2020; 15:e0229171. [PMID: 32084182 PMCID: PMC7034814 DOI: 10.1371/journal.pone.0229171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 01/31/2020] [Indexed: 11/18/2022] Open
Abstract
Glutathione peroxidase (GPx) has been the focus of increased research because of its important role as an antioxidant and in reactive oxygen species (ROS) induced damage repair. Studies on GPxs have relevance with Macrobrachium nipponense because it has poor tolerance to hypoxia in Macrobrachium nipponense. The two subunits named as MnGPx-3 and MnGPx-4 according to the glutathione peroxidase nomenclature system. Both full-length cDNAs were cloned from the hepatopancreas. In this study, we analyzed the expression of two GPxs in Macrobrachium nipponense in response to changes in environmental oxygen. Expression levels of MnGPx-3 and MnGPx-4 indicated that both have strong responses to hypoxia. In situ hybridization showed that MnGPx-3 and MnGPx-4 were located in secretory and storage cells in hepatopancreas. These results suggest that GPx gene is expressed and released by secretory cells and released response to hypoxia. In the gill tissue, however, GPxs are located in blood cells, suggesting that they perform different functions in different tissues or organs. The results of in situ hybridization were consistent with those of quantitative Real-time PCR. This study provides a basis for understanding the oxidative stress response in M. nipponense under hypoxia.
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Affiliation(s)
- Lei Xu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, People’s Republic of China
| | - Ming Yang
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, People’s Republic of China
| | - Hongtuo Fu
- Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, Jiangsu, People’s Republic of China
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
| | - Shengming Sun
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
| | - Hui Qiao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
| | - Wenyi Zhang
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
| | - Yongsheng Gong
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
| | - Sufei Jiang
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
| | - Yiwei Xiong
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
| | - Shubo Jin
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
| | - Yan Wu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, Jiangsu, People’s Republic of China
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Jafari A, Karimipour M, Khaksar MR, Ghasemnejad-Berenji M. Protective effects of orally administered thymol against titanium dioxide nanoparticle-induced testicular damage. Environ Sci Pollut Res Int 2020; 27:2353-2360. [PMID: 31782094 DOI: 10.1007/s11356-019-06937-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 10/31/2019] [Indexed: 05/28/2023]
Abstract
In this study, we investigated the potential of thymol and its mode of action to protect against the titanium dioxide (TiO2) nanoparticle-induced testicular damage. Twenty-four rats were randomly divided into four groups: control group, TiO2 (100 mg/kg BW/day) group, TiO2 + thymol (10 mg/kg BW/day) group, and TiO2 + thymol (30 mg/kg BW/day) group. With the exception of the control group, all animals received orally TiO2 nanoparticles for 60 days. In treatment groups, animals were given orally thymol 1 h before TiO2 nanoparticles. Epididymal sperm parameters, testicular histopathology, and spermatogenesis assessments were performed for evaluation of the TiO2 and thymol effects on the testis. Furthermore, antioxidative enzyme activities such as catalase (CAT), glutathione peroxidase (GPx) and superoxide dismutase (SOD), and malondialdehyde (MDA), glutathione (GSH) levels and ferric-reducing antioxidant power (FRAP) value were measured. Intragastric administration of TiO2 for 60 consecutive days caused a significant decrease in sperm quality, widespread histopathological alteration, and significantly induced oxidative stress as manifested by elevated MDA levels and a remarkable decline in antioxidant enzyme activities such as CAT, SOD, and GPx, and also FRAP and GSH levels in testis tissue. Nearly all of these alterations were significantly ameliorated in the groups that orally received thymol before TiO2 nanoparticles administration. The results of this study demonstrated that thymol improved the spermatogenesis defects induced by TiO2 nanoparticles in rats in a dose-dependent manner by protecting the testes against the testicular toxicity. Reduction in TiO2 nanoparticle-induced oxidative stress may have a major role in this protective effect.
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Affiliation(s)
- Abbas Jafari
- Department of Occupational Health and Neurophysiology Research Center, School of Health, Urmia University of Medical Sciences, Urmia, Iran
| | - Mojtaba Karimipour
- Department of Anatomy and Histology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Mohammad Reza Khaksar
- Department of Occupational Health, School of Health, Qom University of Medical Sciences, Qom, Iran
| | - Morteza Ghasemnejad-Berenji
- Department of Pharmacology and Toxicology, School of Pharmacy, Urmia University of Medical Sciences, PO Box 5715799313, Urmia, Iran.
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Qu C, Liu S, Tang Z, Li J, Liao Z, Qi P. Response of a novel selenium-dependent glutathione peroxidase from thick shell mussel Mytilus coruscus exposed to lipopolysaccharide, copper and benzo[α]pyrene. Fish Shellfish Immunol 2019; 89:595-602. [PMID: 30991153 DOI: 10.1016/j.fsi.2019.04.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/01/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
Glutathione peroxidase (GPx) plays an important antioxidant role in cellular defense against environmental stress. In the present study, a novel selenium-dependent glutathione peroxidase termed McSeGPx firstly identified in thick shell mussel Mytilus coruscus. McSeGPx consists of 197 amino acid residues, characterized with one selenocysteine residue encoded by an opal stop codon TGA, one selenocysteine insertion sequence (SECIS) in the 3' untranslated region (UTR), two active site motifs and one signature sequence motif. McSeGPx transcripts were constitutively expressed in all examined tissues, and were significantly induced in gills and digestive glands with the stimulations of lipopolysaccharide (LPS), copper (Cu) and benzo[α]pyrene (B[α]P). Additionally, rough increases in McSeGPx activity were detected in both tissues under the challenge of LPS, Cu and B[α]P. Collectively, these results suggested that McSeGPx affiliate to selenocysteine dependent GPx (SeGPx) family and might play an important role in mediating the environmental stressors and antioxidant response in M. coruscus.
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Affiliation(s)
- Chengkai Qu
- Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, College of Urban and Environmental Sciences, Northwest University, Xi'an, 710127, China
| | - Shuobo Liu
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhejiang, Zhoushan, 316004, China
| | - Zurong Tang
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhejiang, Zhoushan, 316004, China
| | - Jiji Li
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhejiang, Zhoushan, 316004, China
| | - Zhi Liao
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhejiang, Zhoushan, 316004, China
| | - Pengzhi Qi
- National Engineering Research Center of Marine Facilities Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhejiang, Zhoushan, 316004, China.
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Hassan AA, Abdoon ASS, Elsheikh SM, Khairy MH, Gamaleldin AA, Elnabtity SM. Effect of acute gold nanorods on reproductive function in male albino rats: histological, morphometric, hormonal, and redox balance parameters. Environ Sci Pollut Res Int 2019; 26:15816-15827. [PMID: 30953321 DOI: 10.1007/s11356-019-04884-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 03/15/2019] [Indexed: 05/09/2023]
Abstract
In this study, we investigated the effect of acute administration of gold nanorods (AuNRs) on testicular function, sexual hormones, and oxidative stress parameters in male albino rats. Forty mature male albino rats were divided into two equal groups (n = 20/each). The first group received 1 ml saline solution intraperitoneally (i.p.). The second group received single i.p. injection of 75 μg 50 nm AuNRs/kg/bwt. Five rats from each group were sacrificed on days 1, 3, 7, and 14 post treatment and blood samples were collected for hormonal and biochemical analysis. Testes were collected from each group at each time point for histopathology, morphometric, and transmission electron microscope analyses of testis and epididymis. Results indicated that i.p. injection of AuNRs did not produce any histopathological changes. Morphometric analysis of testicular samples revealed that the height of lining epithelium was significantly (P < 0.05) higher in AuNR group on days 3 and 14 post treatment, and the minor axis of seminiferous tubules was higher (P < 0.05) in AuNR-injected rats than in control group. For the epididymis, the number of spermatozoa was significantly (P < 0.05) higher on days 7 and 14 after AuNR injection when compared with control rats. AuNRs were not detected by TEM at all time points of the experiment. Serum analysis demonstrated that total and free testosterone values significantly (P < 0.05) increased on days 1, 3, 7, and 14 post AuNR injection. LH was higher (P < 0.05) in AuNRs-injected rats on days 3, 7, and 14 post injection, while FSH values were higher (P < 0.05) in AuNR group on days 3 and 14. Malondialdehyde significantly (P < 0.05) decreased on days 3, 7, and 14 in AuNR group, while catalase, glutathione peroxidase, and superoxide dismutase values were significantly (P < 0.05) elevated on days 3, 7, and 14 in AuNRs-injected rats compared with control group. In conclusion, intraperitoneal injection of 50 nm AuNRs is safe on the reproductive function and has an antioxidant action.
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Affiliation(s)
- Arwa A Hassan
- Department of Pharmacology and Toxicology, Faculty of Pharmacy &Pharmaceutical Industries, Sinai University, El Arish, Egypt.
| | - Ahmed Sabry S Abdoon
- Department of Animal Reproduction, Veterinary Research Division, National Research Center, Dokki, Cairo, Egypt.
| | - Sawsan M Elsheikh
- Department of Pharmacology, Faculty of Veterinary medicine, Zagazig University, Zagazig, Egypt
| | - Mohamed H Khairy
- Department of Pharmacology, Faculty of Veterinary medicine, Zagazig University, Zagazig, Egypt
| | - Amina A Gamaleldin
- Department of Pathology, Medical Research Division, National Research Centre, Dokki, Cairo, Egypt
| | - Sameh M Elnabtity
- Department of Pharmacology, Faculty of Veterinary medicine, Zagazig University, Zagazig, Egypt
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Hamdi H, Othmène YB, Ammar O, Klifi A, Hallara E, Ghali FB, Houas Z, Najjar MF, Abid-Essefi S. Oxidative stress, genotoxicity, biochemical and histopathological modifications induced by epoxiconazole in liver and kidney of Wistar rats. Environ Sci Pollut Res Int 2019; 26:17535-17547. [PMID: 31025280 DOI: 10.1007/s11356-019-05022-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
Epoxiconazole (EPX) is a triazole fungicide commonly used in agriculture and for domestic purposes around the world. The excessive application of this pesticide may result in a variety of adverse effects on non-target organisms, including humans. Since, the liver and kidneys are the target organs of this fungicide, potential hepatotoxic and nephrotoxic effects are of high relevance. Thus, our study aimed to investigate the toxic effects of EPX on the liver and kidney of Wistar rats. The exposure of rats to EPX at these concentrations (8, 24, 40, 56 mg/kg bw representing, respectively, NOEL (no observed effect level), NOEL × 3, NOEL × 5, and NOEL × 7) for 28 days significantly enhances hepatic and renal lipid peroxidation which is accompanied by an increase in the level of protein oxidation. Furthermore, the results of the present study clearly indicated that EPX administration induces an increase in the levels of DNA damage in a dose-dependent manner. In addition, the activities of liver and kidney antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and glutathione S-transferase (GST) are increased significantly in EPX-treated rats at concentrations of 8, 24, and 40 mg/kg bw. However, with the dose NOEL × 7 (56 mg/kg bw of EPX), the activities of CAT, GPx, and GST are decreased. Indeed, EPX-intoxicated rats revealed a significant reduction in acetylcholinesterase (AChE) activity in both liver and kidney compared with the control group. Also, our results demonstrated that the EPX administration leads to a disruption of the hepatic (aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH)) and renal (uric acid and creatinine) functions. The biochemical perturbations obtained in the present study are corroborated with the histopathological modifications. Since EPX treatment caused severe damage in the overall histo-architecture of liver and kidney tissues, these results suggest that administration of EPX induced a marked deregulation of liver and kidney functions. Graphical abstract.
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Affiliation(s)
- Hiba Hamdi
- Laboratory for Research on Biologically Compatible Compounds, Faculty of Dental Medicine, University of Monastir, Rue Avicenne, 5000, Monastir, Tunisia
| | - Yosra Ben Othmène
- Laboratory for Research on Biologically Compatible Compounds, Faculty of Dental Medicine, University of Monastir, Rue Avicenne, 5000, Monastir, Tunisia
| | - Oumaima Ammar
- Laboratory of Histology and Cytogenetic (Research Unit of Genetic, Genotoxicity and Childhood Illness UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Aida Klifi
- Research Laboratory "Bioressources: Integrative Biology & Valorisation", University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Elhem Hallara
- Laboratory of Biochemistry and Toxicology, Hospital of Monastir, Fattouma Bourguiba University, Monastir, Tunisia
| | - Faten Ben Ghali
- Laboratory of Biochemistry and Toxicology, Hospital of Monastir, Fattouma Bourguiba University, Monastir, Tunisia
| | - Zohra Houas
- Laboratory of Histology and Cytogenetic (Research Unit of Genetic, Genotoxicity and Childhood Illness UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Mohamec Fadhel Najjar
- Laboratory of Biochemistry and Toxicology, Hospital of Monastir, Fattouma Bourguiba University, Monastir, Tunisia
| | - Salwa Abid-Essefi
- Laboratory for Research on Biologically Compatible Compounds, Faculty of Dental Medicine, University of Monastir, Rue Avicenne, 5000, Monastir, Tunisia.
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Gomes A, Correia AT, Nunes B. Worms on drugs: ecotoxicological effects of acetylsalicylic acid on the Polychaeta species Hediste diversicolor in terms of biochemical and histological alterations. Environ Sci Pollut Res Int 2019; 26:13619-13629. [PMID: 30919192 DOI: 10.1007/s11356-019-04880-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
Pharmaceuticals are important environmental stressors since they have a worldwide use; they are usually released in the aquatic compartment without adequate treatment, and because of their intrinsic properties, they may affect several non-target organisms. Acetylsalicylic acid (ASA), the active substance of aspirin, is a non-steroidal anti-inflammatory drug, being one of the most widely prescribed analgesics in human medical care. Consequently, this compound is systematically reported to occur in the wild, where it may exert toxic effects on non-target species, which are mostly uncharacterized so far. The objective of the present work was to assess the acute and chronic effects of ASA on selected oxidative stress biomarkers [catalase (CAT), glutathione reductase (GRed), glutathione peroxidase (GPx), glutathione S-transferase (GST)], lipid peroxidation (thiobarbituric acid-reactive substance), and histological alterations in the polychaete Hediste diversicolor (Annelida: Polychaeta). The obtained data showed that ASA is not exempt of toxicity, since it was responsible for significant, albeit transient, changes in biomarkers related to the redox status of the organisms, occurring as an increase in the activity of catalase in the individuals exposed acutely to ASA. Chronic exposure to ecologically relevant concentrations of this drug showed to be mostly ineffective in promoting any significant biochemical alteration in H. diversicolor. However, histochemical observations revealed proliferation of mucous cells in the tegument of chronically exposed individuals to ASA.
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Affiliation(s)
- Ana Gomes
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/N, 4450-208, Matosinhos, Portugal
- Departamento de Biologia, Universidade de Aveiro (UA), Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Alberto Teodorico Correia
- Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos S/N, 4450-208, Matosinhos, Portugal
- Faculdade de Ciências da Saúde (FCS), Universidade Fernando Pessoa (UFP), Rua Carlos da Maia, 296, 4200-150, Porto, Portugal
| | - Bruno Nunes
- Departamento de Biologia, Universidade de Aveiro (UA), Campus de Santiago, 3810-193, Aveiro, Portugal.
- Centro de Estudos do Ambiente e do Mar (CESAM), Campus de Santiago, Universidade de Aveiro, 3810-193, Aveiro, Portugal.
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Zeweil MM, Sadek KM, Taha NM, El-Sayed Y, Menshawy S. Graviola attenuates DMBA-induced breast cancer possibly through augmenting apoptosis and antioxidant pathway and downregulating estrogen receptors. Environ Sci Pollut Res Int 2019; 26:15209-15217. [PMID: 30924043 DOI: 10.1007/s11356-019-04920-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
Breast cancer is a global public health problem where it is the second most prevalent cancer. Historical cancer treatment with graviola has been reported. This study aimed to investigate the protective effects of graviola on 7,12-dimethylbenz[a]anthracene (DMBA)-induced rat breast cancer. Fifty female Wistar rats were allocated into four groups: control group (gastro-gavaged by sesame oil), DMBA-treated group (gastro-gavaged a single dose of DMBA [50 mg/kg body mass, diluted in 1 ml sesame oil]) at the age 57 days, DMBA+G37-treated group (gastro-gavaged a single dose of DMBA [50 mg/kg body mass, diluted in 1 ml sesame oil]) at the age of 57 days plus graviola (200 mg/kg body mass) two times weekly (p.o.) at the age of 37 days till the end of the experiment, and DMBA+G57-treated group (received a single dose of DMBA [50 mg/kg body mass, diluted in 1 ml sesame oil]) plus graviola (200 mg/kg body mass) two times weekly at the age of 57 days until the end of the experiment. After the 30-week experimental period, blood samples were collected. Then, animals were sacrificed to determine the apoptotic indices, antioxidant status, and mammary gland tumor marker (CA 15-3). The DMBA upregulated the expression of one of the main anti-apoptotic genes: B-cell lymphoma protein 2 (BCL2) and estrogen receptor alpha (ER-α) gene. Moreover, it significantly increased breast lipid peroxidation and serum CA 15-3 but decreased breast antioxidant enzymatic activities (glutathione peroxidase, glutathione S-transferase, catalase, and superoxide dismutase). Nevertheless, administration of DMBA and graviola especially DMBA+G37 induced apoptosis through at least 1.5-fold in gene expression levels of pro-apoptotic genes: BCL2-associated X protein (BAX), tumor suppressor gene (P53), and cysteinyl-aspartic acid-protease-3 (caspase-3). A critical role of P53 in the regulation of the BCL2 and BAX has been reported. These proteins can determine if the cell undergoes apoptosis or cancels the process. Once the BAX gene activates caspase-3, there is no irreversible way toward cell death. Also, graviola ameliorated the DMBA effects on antioxidant enzymatic activities and tumor marker CA 15-3. This study concludes that graviola ameliorated DMBA-induced breast cancer potentially through upregulating apoptotic genes, downregulating the ER-α gene, increasing antioxidants, and decreasing lipid peroxidation levels.
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Affiliation(s)
- Mohamed M Zeweil
- Faculty of Veterinary Medicine, Department of Biochemistry, Damanhour University, Damanhour, Egypt
| | - Kadry M Sadek
- Faculty of Veterinary Medicine, Department of Biochemistry, Damanhour University, Damanhour, Egypt.
| | - Nabil M Taha
- Faculty of Veterinary Medicine, Department of Biochemistry, Alexandria University, Alexandria, Egypt
| | - Yasser El-Sayed
- Faculty of Veterinary Medicine, Department of Forensic Medicine and Toxicology, Damanhour University, Damanhur, Egypt
| | - Sherif Menshawy
- Faculty of Veterinary Medicine, Department of Genetics, Damanhour University, Damanhour, Egypt
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Abdel-Daim MM, Aleya L, El-Bialy BE, Abushouk AI, Alkahtani S, Alarifi S, Alkahtane AA, AlBasher G, Ali D, Almeer RS, Al-Sultan NK, Alghamdi J, Alahmari A, Bungau SG. The ameliorative effects of ceftriaxone and vitamin E against cisplatin-induced nephrotoxicity. Environ Sci Pollut Res Int 2019; 26:15248-15254. [PMID: 30929167 DOI: 10.1007/s11356-019-04801-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
Nephrotoxicity is a common adverse effect of treatment with cisplatin (CDDP). This study was performed to evaluate the antioxidant and nephroprotective efficacy of ceftriaxone (CTX) and vitamin E (Vit.E), alone and in combination against CDDP-induced acute renal injury. Fifty-six male albino rats were equally divided into seven groups, receiving (I) normal saline, (II) CTX (100 mg/kg, intraperitoneal [i.p] injection), (III) Vit.E (100 mg/kg orally), (IV) CDDP (5 mg/kg i.p injection), (V) CDDP plus CTX, (VI) CDDP plus Vit.E, and (VII) CDDP plus CTX in combination with Vit.E. All treatments were administered daily for 10 days except CDDP, which was given as a single dose at the sixth day of the study. Compared to normal control rats, CDDP-injected rats showed significantly (p < 0.05) higher serum levels of renal injury biomarkers (uric acid, urea, and creatinine) and tumor necrosis factor-α (TNF-α), as well as increased renal tissue concentrations of malondialdehyde, nitric oxide, and TNF-α. Moreover, CDDP administration was associated with significantly lower (p < 0.05) renal tissue levels of reduced glutathione and activities of endogenous antioxidant enzymes (glutathione peroxidase, superoxide dismutase, and catalase) and total antioxidant capacity. All these alterations were significantly ameliorated in CDDP-injected rats, receiving CTX and/or Vit.E, compared to rats receiving CDDP alone. Interestingly, the antioxidant and anti-inflammatory effects were more marked in the CTX-Vit.E combination group, compared to groups receiving either drug alone. In conclusion, CTX and Vit.E (especially in combination) could counteract the nephrotoxic effect of CDDP, probably through their antioxidant activities.
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Affiliation(s)
- Mohamed M Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt.
| | - Lotfi Aleya
- Chrono-Environnement Laboratory, UMR CNRS 6249, Bourgogne Franche-Comté University, 25030, Besançon Cedex, France
| | - Badr E El-Bialy
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Sadat City University, Sadat City, Egypt
| | | | - Saad Alkahtani
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Saud Alarifi
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Abdullah A Alkahtane
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Gadah AlBasher
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Daoud Ali
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Rafa S Almeer
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Nouf K Al-Sultan
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Jawahir Alghamdi
- Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
| | - Abeer Alahmari
- Department of Biology, Science College, King Khalid University, Abha, Saudi Arabia
| | - Simona G Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
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Chalana A, Karri R, Das R, Kumar B, Rai RK, Saxena H, Gupta A, Banerjee M, Jha KK, Roy G. Copper-Driven Deselenization: A Strategy for Selective Conversion of Copper Ion to Nanozyme and Its Implication for Copper-Related Disorders. ACS Appl Mater Interfaces 2019; 11:4766-4776. [PMID: 30644707 DOI: 10.1021/acsami.8b16786] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Synthetic organic molecules, which can selectively convert excess intracellular copper (Cu) ions to nanozymes with an ability to protect cells from oxidative stress, are highly significant in developing therapeutic agents against Cu-related disorder like Wilson's disease. Here, we report 1,3-bis(2-hydroxyethyl)-1 H-benzoimidazole-2-selenone (1), which shows a remarkable ability to remove Cu ion from glutathione, a major cytosolic Cu-binding ligand, and thereafter converts it into copper selenide (CuSe) nanozyme that exhibits remarkable glutathione peroxidase-like activity, at cellular level of H2O2 concentration, with excellent cytoprotective effect against oxidative stress in hepatocyte. Cu-driven deselenization of 1, under physiologically relevant conditions, occurred in two steps. The activation of C═Se bond by metal ion is the crucial first step, followed by cleavage of the metal-activated C═Se bond, initiated by the OH group of N-(CH2)2OH substituent through neighboring group participation (deselenization step), resulted in the controlled synthesis of various types of Cu2-xSe nanocrystals (NCs) (nanodisks, nanocubes, and nanosheets) and tetragonal Cu3Se2 NCs, depending upon the oxidation state of the Cu ion used to activate the C═Se bond. Deselenization of 1 is highly metal-selective. Except Cu, other essential metal ions, including Mn2+, Fe2+, Co2+, Ni2+, or Zn2+, failed to produce metal selenide under identical reaction conditions. Moreover, no significant change in the expression level of Cu-metabolism-related genes, including metallothioneines MT1A, is observed in liver cells co-treated with Cu and 1, as opposed to the large increase in the concentrations of these genes observed in cells treated with Cu alone, suggesting the participation of 1 in Cu homeostasis in hepatocyte.
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20
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Xie X, Chen M, Zhu A. Molecular characterization and functional analysis of two phospholipid hydroperoxide isoforms from Larimichthys crocea under Vibrio parahaemolyticus challenge. Fish Shellfish Immunol 2018; 78:259-269. [PMID: 29702237 DOI: 10.1016/j.fsi.2018.04.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
Glutathione peroxidases family is a key role in the antioxidant system in oxybiotic organisms for cell redox homeostasis. One of their members, phospholipid hydroperoxide glutathione peroxidase (GPx4) have unique monomeric structure and can directly react with complex lipid and membrane-bound peroxides under the presence of glutathione(GSH). In this paper, two complete GPx4 cDNAs (designated as LcGPx4a and LcGPx4b) from Larimichthys crocea are identified by rapid amplification of cDNA ends. The cDNA of LcGPx4a was consisted of a 5'-untranslated region (UTR) of 258 bp, a 3'-UTR of 330 bp, and an open reading frame (ORF) of 561 bp encoding 186 amino acid (aa) polypeptides. And the full-length sequence of LcGPx4b was 1164 bp with a 5'-UTR of 34 bp, a 3'-UTR of 551 bp and an ORF of 576 bp encoding a polypeptide of 191 aa residues with a predicted signal peptide of 15 aa. The characteristic selenocysteine insertion (SECIS) sequence was detected in the 3'UTR of the two sequences with 78 bp in length. The conserved active site of selenocysteine (Sec) encoded by TGA was also identified and formed a tetrad functional structure with glutamine, tryptophan, and asparagine in LcGPx4a and LcGPx4b. Two signature site motifs ("LRILAFPSNQFGNQEPG" and "LRILGFPCNQFGGQEPG") were both conserved in the deduced amino acid of LcGPx4a and LcGPx4b. The genomic structure analysis revealed that the two sequences both had 7 exons and 6 introns, and the Sec opal codon and SECIS element were located at the third and seventh exons, respectively. LcGPx4a and LcGPx4b both have a wide distribution in 9 tissues with various relative expression levels and a highest expression pattern in the liver. Under Vibrio parahaemolyticus challenge, their relative expression levels were altered in the liver, spleen, kidney, and head kidney but with different magnitudes and response time. LcGPx4a and LcGPx4b showed a significantly up-regulated trend in the spleen during experimental period. Above results suggested that LcGPx4a and LcGPx4b were two conserved immune molecules and might play a role in the immune response of fish with a tissue-depemdent manners.
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Affiliation(s)
- Xiaoze Xie
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Mengnan Chen
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Aiyi Zhu
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China.
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Abdel-Daim MM, Abdellatief SA. Attenuating effects of caffeic acid phenethyl ester and betaine on abamectin-induced hepatotoxicity and nephrotoxicity. Environ Sci Pollut Res Int 2018; 25:15909-15917. [PMID: 29589235 DOI: 10.1007/s11356-018-1786-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
Abamectin (ABM) is a widely utilized potent anthelmintic and insecticidal agent. In this study, we investigated the protective effects of caffeic acid phenethyl ester (CAPE) and betaine (BET) against ABM-induced hepatotoxicity and nephrotoxicity in rats. Forty rats were divided into five groups, receiving either oral saline solution (normal control), oral ABM at a dose of 2 mg/kg BW (1/5 LD50), CAPE (10 μmol/kg BW intraperitoneally) followed by ABM, or BET supplementation at a dose of 250 mg/kg BW followed by ABM administration, while group V rats received a combination of i.p. CAPE and oral BET in the same doses before receiving ABM. Biochemical analysis showed that ABM administration significantly (p < 0.05) increased serum levels of aminotransferases, alkaline phosphatase, lactate dehydrogenase, and cholesterol, as well as serum creatinine and urea. Compared to the control group, ABM-intoxicated rats had significantly (p < 0.05) higher tissue concentrations of nitric oxide and malondialdehyde, as well as lower tissue glutathione concentration, total antioxidant capacity, and antioxidant enzymatic activity (glutathione peroxidase, superoxide dismutase, and catalase). Histopathological examination of hepatic and renal tissues of ABM-intoxicated rats showed acute inflammatory and necrotic changes. Pretreatment with CAPE and/or BET reversed the biochemical and histopathological alterations of ABM on the liver and kidneys. Therefore, CAPE and BET (alone or in combination) could be promising protective agents against ABM-induced hepatotoxicity and nephrotoxicity. Future studies should confirm our findings and evaluate the other molecular effects are involved in the combination chemoprotection of CAPE and BET.
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Affiliation(s)
- Mohamed M Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt.
| | - Suhair A Abdellatief
- Pharmacology Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
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22
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Tyagi S, Sembi JK, Upadhyay SK. Gene architecture and expression analyses provide insights into the role of glutathione peroxidases (GPXs) in bread wheat (Triticum aestivum L.). J Plant Physiol 2018; 223:19-31. [PMID: 29471272 DOI: 10.1016/j.jplph.2018.02.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 02/07/2018] [Accepted: 02/09/2018] [Indexed: 05/05/2023]
Abstract
Glutathione peroxidases (GPXs) are redox sensor proteins that maintain a steady-state of H2O2 in plant cells. They exhibit distinct sub-cellular localization and have diverse functionality in response to different stimuli. In this study, a total of 14 TaGPX genes and three splice variants were identified in the genome of Triticum aestivum and evaluated for various physicochemical properties. The TaGPX genes were scattered on the various chromosomes of the A, B, and D sub-genomes and clustered into five homeologous groups based on high sequence homology. The majority of genes were derived from the B sub-genome and localized on chromosome 2. The intron-exon organization, motif and domain architecture, and phylogenetic analyses revealed the conserved nature of TaGPXs. The occurrence of both development-related and stress-responsive cis-acting elements in the promoter region, the differential expression of these genes during various developmental stages, and the modulation of expression in the presence of biotic and abiotic stresses suggested their diverse role in T. aestivum. The majority of TaGPX genes showed higher expression in various leaf developmental stages. However, TaGPX1-A1 was upregulated in the presence of each abiotic stress treatment. A co-expression analysis revealed the interaction of TaGPXs with numerous development and stress-related genes, which indicated their vital role in numerous biological processes. Our study revealed the opportunities for further characterization of individual TaGPX proteins, which might be useful in designing future crop improvement strategies.
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Affiliation(s)
- Shivi Tyagi
- Department of Botany, Panjab University, Chandigarh,160014, India
| | - Jaspreet K Sembi
- Department of Botany, Panjab University, Chandigarh,160014, India
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Milovanovic V, Buha A, Matovic V, Curcic M, Vucinic S, Nakano T, Antonijevic B. Oxidative stress and renal toxicity after subacute exposure to decabrominated diphenyl ether in Wistar rats. Environ Sci Pollut Res Int 2018; 25:7223-7230. [PMID: 26676538 DOI: 10.1007/s11356-015-5921-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 12/03/2015] [Indexed: 06/05/2023]
Abstract
Fully brominated diphenyl ether (BDE-209) is a flame retardant widely used in plastics and textiles. Because of its high persistence, humans are exposed to it continuously, mainly via dust ingestion. We investigated effects of BDE-209 on renal function and oxidative stress development in the kidney after subacute exposure in rats. Five groups of animals were given by oral gavage 31.25-500 mg BDE-209/kg b.w./day for 28 days, and relative kidney weight, serum urea and creatinine, and oxidative stress parameters in the kidney were determined. Benchmark-dose approach was used for dose response modeling. Serum creatinine was increased, while results obtained for serum urea were inconclusive. Relative kidney weight was not affected by BDE-209. Kidney reduced glutathione was elevated, while superoxide dismutase activity was not changed after BDE-209 treatment. Also, levels of thiobarbituric acid reactive substances (TBARS) were increased and total -SH groups were decreased, which indicated oxidative imbalance. The critical effect dose (CED)/CEDL ratios for the effects on TBARS and total -SH groups indicated estimated CEDs for these markers can be used in risk assessment of BDE-209. Our study results have shown that a relatively low dose of BDE-209 affects kidney function and that oxidative stress is one of the mechanisms of its nephrotoxicity.
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Affiliation(s)
- Vesna Milovanovic
- Chemicals Department, Ministry of Agriculture and Environmental Protection of Republic of Serbia, Omladinskih brigada 1, 11070, Belgrade, Serbia.
| | - Aleksandra Buha
- Department of Toxicology "Akademik Danilo Soldatovic", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Vesna Matovic
- Department of Toxicology "Akademik Danilo Soldatovic", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Marijana Curcic
- Department of Toxicology "Akademik Danilo Soldatovic", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
| | - Slavica Vucinic
- National Poison Control Center, Military Medical Academy, Crnotravska 17, 11000, Belgrade, Serbia
| | - Takeshi Nakano
- Graduate School of Engineering, Osaka University, Yamadaoka 2-4, Suita, Japan
| | - Biljana Antonijevic
- Department of Toxicology "Akademik Danilo Soldatovic", University of Belgrade - Faculty of Pharmacy, Vojvode Stepe 450, 11221, Belgrade, Serbia
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Ferro D, Franchi N, Bakiu R, Ballarin L, Santovito G. Molecular characterization and metal induced gene expression of the novel glutathione peroxidase 7 from the chordate invertebrate Ciona robusta. Comp Biochem Physiol C Toxicol Pharmacol 2018; 205:1-7. [PMID: 29253620 DOI: 10.1016/j.cbpc.2017.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/08/2017] [Accepted: 12/12/2017] [Indexed: 11/28/2022]
Abstract
In the present study, we describe the identified and characterized the gene and the transcript of a novel glutathione peroxidase-7 (GPx7) from the solitary ascidian Ciona robusta, an invertebrate chordate widely distributed in temperate shallow seawater. The putative nucleotide and amino acid sequences were compared with those of GPx7 from other metazoans and phylogenetic analysis suggests the presence of a high evolutionary pressure in the contest of neutral evolution. The mRNA of CrGPx7 is located in hemocytes and ovarian follicular cells, as revealed by in situ hybridization. The time course of CrGPx7 mRNA levels in the presence of Cd, Cu and Zn, showed upregulation in the final stages of the experiments, suggesting a role of GPx7 in late protection from oxidative stress. Our in silico analyses of the crgpx7 promoter region revealed putative consensus sequences similar to mammalian metal-responsive elements (MRE) and xenobiotic-responsive elements (XRE), suggesting that the transcription of these genes directly depends on metals. Cell-free extract from C. robusta tissues show the presence of selenium-independent GPx activity that is inhibited by the presence of metals.
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Affiliation(s)
- D Ferro
- Institute for Evolution and Biodiversity, Westfälische Wilhelms-Universität, Münster, Germany
| | - N Franchi
- Department of Biology, University of Padova, Padova, Italy
| | - R Bakiu
- Department of Aquaculture and Fisheries, Agricultural University of Tirana, Tirana, Albania
| | - L Ballarin
- Department of Biology, University of Padova, Padova, Italy.
| | - G Santovito
- Department of Biology, University of Padova, Padova, Italy
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25
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Affiliation(s)
- Andrea N. Killian
- Department of Chemistry, Lafayette College, Easton, Pennsylvania, United States of America
| | - Justin K. Hines
- Department of Chemistry, Lafayette College, Easton, Pennsylvania, United States of America
- * E-mail:
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Xie X, Chen M, Zhu A. Identification and characterization of two selenium-dependent glutathione peroxidase 1 isoforms from Larimichthys crocea. Fish Shellfish Immunol 2017; 71:411-422. [PMID: 28964863 DOI: 10.1016/j.fsi.2017.09.067] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 09/18/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
Glutathione peroxidases, a vital family of antioxidant enzymes in oxybiotic organisms, are involved in anti-pathogen immune response. In this study, two complete selenium-dependent glutathione peroxidase 1 cDNAs (designated as LcGPx1a and LcGPx1b) were obtained from the large yellow croaker Larimichthys crocea by rapid amplification of cDNA ends. The full-length sequence of LcGPx1a was 917 bp with a 5'-untranslated region (UTR) of 52 bp, a 3'-UTR of 289 bp, and an open reading frame of 576 bp encoding 191 amino acid (aa) polypeptides. The cDNA of LcGPx1b was composed of 884 bp with a 5'-UTR of 59 bp, a 3'-UTR of 258 bp, and an open reading frame of 567 bp encoding 188 aa polypeptides. The conserved selenocysteine insertion sequence was detected in the 3'-UTR of both isoforms, which can classify types I and II. Protein sequence analysis revealed that both isoforms included a selenocysteine encoded by an opal codon (TGA) and formed the functioning tetrad site with glutamine, tryptophan, and asparagine. Three conservative motifs, including one active site motif ("GKVVLIENVASLUGTT") and two signature site motifs ("LVILGVPCNQFGHQENC" and "V(A/S)WNFEKFLI"), were conserved both in sequence and location. Multiple alignments revealed that they exhibited a high level of identities with GPx1 from other organisms, especially in the abovementioned conserved amino acid sequence motifs. Tissue expression analysis indicated that LcGPx1a and LcGPx1b had a wide distribution in nine tissues with various abundances. The transcript level of LcGPx1a was not significantly different among the nine tissues, whereas that of LcGPx1b was higher in the kidney and head kidney than in the other tissues. After Vibrio parahaemolyticus stimulation, the expression levels of LcGPx1a and LcGPx1b were unanimously altered in the liver, spleen, kidney, and head kidney but with different magnitudes and response time. LcGPx1a and LcGPx1b showed distinct expression trends in the liver, where LcGPx1b was induced and LcGPx1a was depressed in response to pathogen infection. These results indicate that LcGPx1a and LcGPx1b display functional diversities and play crucial roles in mediating the immune response of fish.
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Affiliation(s)
- Xiaoze Xie
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Mengnan Chen
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
| | - Aiyi Zhu
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China.
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Li F, Wang P, Zhao C, Bao W, Qiu L. Cloning and characterization of PHGPx and its synergistic role with p53 in mediating stress in Penaeus monodon. Fish Shellfish Immunol 2017; 71:380-392. [PMID: 29020605 DOI: 10.1016/j.fsi.2017.10.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 09/04/2017] [Accepted: 10/07/2017] [Indexed: 06/07/2023]
Abstract
Phospholipid-hydroperoxide glutathione peroxidase (PHGPx), a ubiquitous antioxidant enzyme in the glutathione peroxidase (GPx) family, plays multiple roles in different organisms. Here, a novel PHGPx (PmPHGPx) was identified from Penaeus monodon. The full-length PmPHGPx cDNA was 1885 bp in length with a 489-bp open reading frame (ORF) containing a selenocysteine codon, TGA177-179, and a selenocysteine insertion sequence in the 3'-UTR. The typical signature motifs of the GPx family were also detected in the PmPHGPx amino acid sequence. The PmPHGPx expression pattern showed tissue-specific variations, with the highest expression level in the heart and the lowest expression level in the muscle. To examine the relationship between Pmp53 and PmPHGPx, Pmp53 was successfully silenced with a dsRNA-p53 injection, and an obvious down-regulation in PmPHGPx expression was apparent. To clarify the functional roles of Pmp53 and PmPHGPx, their expression patterns were also assessed after pH-induced stress, salinity stress and heavy metal (Cu, Zn, and Cd) challenges. Similar trends in the expression profiles for PmPHGPx and Pmp53 were detected in both the gills and hepatopancreas in response to all stressors. Therefore, we conclude from the results that PmPHGPx acts synergistically and subsequently works cooperatively with Pmp53 toward mediating cell stress. This study improves our understanding of PmPHGPx and its synergistic role with Pmp53 in counteracting stressors in P. monodon.
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Affiliation(s)
- Fuxiang Li
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; College of Aqua-life Science and Technology, Shanghai Ocean University, Shanghai, PR China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou, PR China
| | - Pengfei Wang
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou, PR China
| | - Chao Zhao
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou, PR China
| | | | - Lihua Qiu
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou, PR China; Key Laboratory of Aquatic Genomics, Ministry of Agriculture, CAFS, Beijing 100141, PR China.
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28
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Cozza G, Rossetto M, Bosello-Travain V, Maiorino M, Roveri A, Toppo S, Zaccarin M, Zennaro L, Ursini F. Glutathione peroxidase 4-catalyzed reduction of lipid hydroperoxides in membranes: The polar head of membrane phospholipids binds the enzyme and addresses the fatty acid hydroperoxide group toward the redox center. Free Radic Biol Med 2017; 112:1-11. [PMID: 28709976 DOI: 10.1016/j.freeradbiomed.2017.07.010] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/03/2017] [Accepted: 07/06/2017] [Indexed: 12/31/2022]
Abstract
GPx4 is a monomeric glutathione peroxidase, unique in reducing the hydroperoxide group (-OOH) of fatty acids esterified in membrane phospholipids. This reaction inhibits lipid peroxidation and accounts for enzyme's vital role. Here we investigated the interaction of GPx4 with membrane phospholipids. A cationic surface near the GPx4 catalytic center interacts with phospholipid polar heads. Accordingly, SPR analysis indicates cardiolipin as the phospholipid with maximal affinity to GPx4. Consistent with the electrostatic nature of the interaction, KCl increases the KD. Molecular dynamic (MD) simulation shows that a -OOH posed in the core of the membrane as 13 - or 9 -OOH of tetra-linoleoyl cardiolipin or 15 -OOH stearoyl-arachidonoyl-phosphaphatidylcholine moves to the lipid-water interface. Thereby, the -OOH groups are addressed toward the GPx4 redox center. In this pose, however, the catalytic site facing the membrane would be inaccessible to GSH, but the consecutive redox processes facilitate access of GSH, which further primes undocking of the enzyme, because GSH competes for the binding residues implicated in docking. During the final phase of the catalytic cycle, while GSSG is produced, GPx4 is disconnected from the membrane. The observation that GSH depletion in cells induces GPx4 translocation to the membrane, is in agreement with this concept.
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Affiliation(s)
- Giorgio Cozza
- Department of Molecular Medicine, University of Padova, Viale G. Colombo, 3, I-35121 Padova, Italy
| | - Monica Rossetto
- Department of Molecular Medicine, University of Padova, Viale G. Colombo, 3, I-35121 Padova, Italy
| | | | - Matilde Maiorino
- Department of Molecular Medicine, University of Padova, Viale G. Colombo, 3, I-35121 Padova, Italy
| | - Antonella Roveri
- Department of Molecular Medicine, University of Padova, Viale G. Colombo, 3, I-35121 Padova, Italy
| | - Stefano Toppo
- Department of Molecular Medicine, University of Padova, Viale G. Colombo, 3, I-35121 Padova, Italy
| | - Mattia Zaccarin
- Department of Molecular Medicine, University of Padova, Viale G. Colombo, 3, I-35121 Padova, Italy
| | - Lucio Zennaro
- Department of Molecular Medicine, University of Padova, Viale G. Colombo, 3, I-35121 Padova, Italy
| | - Fulvio Ursini
- Department of Molecular Medicine, University of Padova, Viale G. Colombo, 3, I-35121 Padova, Italy.
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Wang BY, Wen RR, Ma L. Molecular characterization and functional analysis of a glutathione peroxidase gene from Aphelenchoides besseyi (Nematoda: Aphelenchoididae). Acta Parasitol 2017; 62:565-574. [PMID: 28682766 DOI: 10.1515/ap-2017-0068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 04/20/2017] [Indexed: 12/18/2022]
Abstract
Aphelenchoides besseyi, the nematode agent of rice tip white disease, causes huge economic losses in almost all the rice-growing regions of the world. Glutathione peroxidase (GPx), an esophageal glands secretion protein, plays important roles in the parasitism, immune evasion, reproduction and pathogenesis of many plant-parasitic nematodes (PPNs). Therefore, GPx is a promising target for control A. besseyi. Here, the full-length sequence of the GPx gene from A. besseyi (AbGPx1) was cloned using the rapid amplification of cDNA ends method. The full-length 944 bp AbGPx1 sequence, which contains a 678 bp open reading frame, encodes a 225 amino acid protein. The deduced amino acid sequence of the AbGPxl shares highly homologous with other nematode GPxs, and showed the closest evolutionary relationship with DrGPx. In situ hybridization showed that AbGPx1 was constitutively expressed in the esophageal glands of A. besseyi, suggesting its potential roles in parasitism and reproduction. RNA interference (RNAi) was used to assess the functions of the AbGPx1 gene, and quantitative real-time PCR was used to monitor the RNAi effects. After treatment with dsRNA for 12 h, AbGPx1 expression levels and reproduction in the nematodes decreased compared with the same parameters in the control group; thus, the AbGPx1 gene is likely to be associated with the development, reproduction, and infection ability of A. besseyi. These findings may open new avenues towards nematode control.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Guan T, Song J, Wang Y, Guo L, Yuan L, Zhao Y, Gao Y, Lin L, Wang Y, Wei J. Expression and characterization of recombinant bifunctional enzymes with glutathione peroxidase and superoxide dismutase activities. Free Radic Biol Med 2017; 110:188-195. [PMID: 28603086 DOI: 10.1016/j.freeradbiomed.2017.06.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 05/26/2017] [Accepted: 06/06/2017] [Indexed: 01/29/2023]
Abstract
To balance the production and decomposition of reactive oxygen species, living organisms have generated antioxidant enzymes and non-enzymatic antioxidant defense systems. Glutathione peroxidase (GPx) and superoxide dismutase (SOD) are two important antioxidant enzymes. Apart from their catalytic functions, they protect each other, resulting in more efficient removal of reactive oxygen species, protection of cells against injury, and maintenance of the normal metabolism of reactive oxygen species. SOD catalyzes the dismutation of the superoxide anion (O2•-) to oxygen (O2) and hydrogen peroxide (H2O2). H2O2 is then detoxified to water by GPx. In this study, human GPx1Ser and the Alvinella pompejana SOD (ApSOD) gene were used to design and generate several recombinant proteins with both GPx and SOD activities by combining traditional fusion protein technology, a cysteine auxotrophic expression system, and a single protein production (SPP) system. Among the fusion proteins, Se-hGPx1Ser-L-ApSOD exhibited the highest SOD and GPx activities. Additional research was conducted to better understand the properties of Se-hGPx1Ser-L-ApSOD. The synergism of Se-hGPx1Ser-L-ApSOD was evaluated by using an in vitro model. This research may facilitate future studies on the cooperation and catalytic mechanisms of GPx and SOD. We believe that the bifunctional enzyme has potential applications as a potent antioxidant.
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Affiliation(s)
- Tuchen Guan
- College of Pharmaceutical Science, Jilin University, Changchun 130021, PR China
| | - Jian Song
- College of Electronic Science and Engineering, Jilin University, Changchun 130000, PR China
| | - Yanan Wang
- College of Pharmaceutical Science, Jilin University, Changchun 130021, PR China
| | - Liying Guo
- College of Pharmaceutical Science, Jilin University, Changchun 130021, PR China
| | - Lin Yuan
- College of Pharmaceutical Science, Jilin University, Changchun 130021, PR China
| | - Yingding Zhao
- Eighth High School of Changchun, Changchun 130021, PR China
| | - Yuan Gao
- College of Pharmaceutical Science, Jilin University, Changchun 130021, PR China
| | - Liangru Lin
- College of Pharmaceutical Science, Jilin University, Changchun 130021, PR China
| | - Yali Wang
- College of Pharmaceutical Science, Jilin University, Changchun 130021, PR China
| | - Jingyan Wei
- College of Pharmaceutical Science, Jilin University, Changchun 130021, PR China; Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, Jilin University, Changchun 130000, PR China.
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Attacha S, Solbach D, Bela K, Moseler A, Wagner S, Schwarzländer M, Aller I, Müller SJ, Meyer AJ. Glutathione peroxidase-like enzymes cover five distinct cell compartments and membrane surfaces in Arabidopsis thaliana. Plant Cell Environ 2017; 40:1281-1295. [PMID: 28102911 DOI: 10.1111/pce.12919] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 01/09/2017] [Accepted: 01/10/2017] [Indexed: 05/27/2023]
Abstract
Glutathione peroxidase-like enzymes (GPXLs) constitute a family of eight peroxidases in Arabidopsis thaliana. In contrast to the eponymous selenocysteine glutathione peroxidases in mammalian cells that use glutathione as electron donor, GPXLs rely on cysteine instead of selenocysteine for activity and depend on the thioredoxin system for reduction. Although plant GPXLs have been implicated in important agronomic traits such as drought tolerance, photooxidative tolerance and immune responses, there remain major ambiguities regarding their subcellular localization. Because their site of action is a prerequisite for an understanding of their function, we investigated the localization of all eight GPXLs in stable Arabidopsis lines expressing N-terminal and C-terminal fusions with redox-sensitive green fluorescent protein 2 (roGFP2) using confocal microscopy. GPXL1 and GPXL7 were found in plastids, while GPXL2 and GPXL8 are cytosolic nuclear. The N-terminal target peptide of GPXL6 is sufficient to direct roGFP2 into mitochondria. Interestingly, GPXL3, GPXL4 and GPXL5 all appear to be membrane bound. GPXL3 was found exclusively in the secretory pathway where it is anchored by a single N-terminal transmembrane domain. GPXL4 and GPXL5 are anchored to the plasma membrane. Presence of an N-terminal myristoylation motif and genetic disruption of membrane association through targeted mutagenesis point to myristoylation as essential for membrane localization.
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Affiliation(s)
- Safira Attacha
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - David Solbach
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Krisztina Bela
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
- Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726, Szeged, Hungary
| | - Anna Moseler
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Stephan Wagner
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Markus Schwarzländer
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Isabel Aller
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Stefanie J Müller
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Andreas J Meyer
- INRES-Chemical Signalling, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
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Abstract
The ability of some crops to accumulate selenium (Se) is crucial for human nutrition and health. Selenium has been identified as a cofactor of the enzyme glutathione peroxidase, which is a catalyzer in the reduction of peroxides that can damage cells and tissues, and can act as an antioxidant. Plants are the first link in the food chain, which ends with humans. Increasing the Se quantity in plant products, including leafy and fruity vegetables, and fruit crops, without exceeding the toxic threshold, is thus a good way to increase animal and human Se intake, with positive effects on long-term health. In many Se-enriched plants, most Se is in its major organic form. Given that this form is more available to humans and more efficient in increasing the selenium content than inorganic forms, the consumption of Se-enriched plants appears to be beneficial. An antioxidant effect of Se has been detected in Se-enriched vegetables and fruit crops due to an improved antioxidative status and to a reduced biosynthesis of ethylene, which is the hormone with a primary role in plant senescence and fruit ripening. This thus highlights the possible positive effect of Se in preserving a longer shelf-life and longer-lasting quality.
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Affiliation(s)
- Martina Puccinelli
- Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy.
| | - Fernando Malorgio
- Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy.
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Yang R, Jia Q, Ma S, Cui S, Liu X, Wang Y, Gao Q. [Effect of hydrogen sulfide on inducible nitric oxide synthase in kidneys of Type 1 diabetic rats]. Zhong Nan Da Xue Xue Bao Yi Xue Ban 2017; 42:389-394. [PMID: 28490695 DOI: 10.11817/j.issn.1672-7347.2017.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To investigate effects of hydrogen sulfide (H2S) on inducible nitric oxide synthase (iNOS) in kidneys of Type 1 diabetic rats.
Methods: Thirty-two male SD rats were randomly divided into four groups: A normal control (NC) group, a diabetes mellitus (DM) group, a NaHS (NaHS+DM) group, and a NaHS control (NaHS) group (n=8 per group). Type 1 diabetes was induced by a single intraperitoneal injection of streptozotocin (55 mg/kg). After successful establishment of models, the rats in NaHS+DM and NaHS groups were injected with NaHS solution (56 μmol/kg) intraperitoneally. Eight weeks later, the activities of total nitric oxide synthase (T-NOS) and iNOS, as well as the level of nitric oxide (NO) were detected in serum and renal tissues, respectively. The activity of glutathione peroxidase (GSH-Px) was determined in renal tissues. The ultrastructures of renal tissues were observed by transmission electron microscope. The protein expression of iNOS in renal tissues was detected by Western blot.
Results: Compared with the NC group, there was no significant difference in the various indexes in the NaHS group (P>0.05). However, in the DM group, the activities of T-NOS and iNOS, and the level of NO were all increased significantly in serum and renal tissues, while the activity of GSH-Px was decreased in renal tissues. Under the electronic microscope, the thickening of the glomerular capillary basement membrane, the proliferation of mesangial matrix, and the foot fusion were observed. The protein expression of iNOS was increased obviously in renal tissues in the DM group (P<0.01). Compared with the DM group, the activities of T-NOS and iNOS and the level of NO were all decreased in serum and renal tissues, while the activity of GSH-Px was increased in renal tissues in the NaHS+DM group (P<0.01). The renal ultrastructural damages were ameliorated obviously. The protein expression of iNOS was decreased significantly (P<0.01).
Conclusion: H2S exerts a protective effect on kidney injury in type 1 diabetic rats. The mechanism might be related to inhibition of iNOS activity and protein expression, in turn leading to reduction of NO content in renal tissues.
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Affiliation(s)
- Rui Yang
- Department of Physiology, Bengbu Medical College, Bengbu Anhui 233030, China
| | - Qiang Jia
- Department of Physiology, Bengbu Medical College, Bengbu Anhui 233030, China
| | - Shanfeng Ma
- Department of Physiology, Bengbu Medical College, Bengbu Anhui 233030, China
| | - Shujun Cui
- Department of Bioscience, Bengbu Medical College, Bengbu Anhui 233030, China
| | - Xiaofen Liu
- Department of Physiology, Bengbu Medical College, Bengbu Anhui 233030, China
| | - Yuanyuan Wang
- Center of Functional Experiment, Bengbu Medical College, Bengbu Anhui 233030, China
| | - Qin Gao
- Department of Physiology, Bengbu Medical College, Bengbu Anhui 233030, China
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Allan KM, Loberg MA, Chepngeno J, Hurtig JE, Tripathi S, Kang MG, Allotey JK, Widdershins AH, Pilat JM, Sizek HJ, Murphy WJ, Naticchia MR, David JB, Morano KA, West JD. Trapping redox partnerships in oxidant-sensitive proteins with a small, thiol-reactive cross-linker. Free Radic Biol Med 2016; 101:356-366. [PMID: 27816612 PMCID: PMC5154803 DOI: 10.1016/j.freeradbiomed.2016.10.506] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/14/2016] [Accepted: 10/27/2016] [Indexed: 12/15/2022]
Abstract
A broad range of redox-regulated proteins undergo reversible disulfide bond formation on oxidation-prone cysteine residues. Heightened reactivity of the thiol groups in these cysteines also increases susceptibility to modification by organic electrophiles, a property that can be exploited in the study of redox networks. Here, we explored whether divinyl sulfone (DVSF), a thiol-reactive bifunctional electrophile, cross-links oxidant-sensitive proteins to their putative redox partners in cells. To test this idea, previously identified oxidant targets involved in oxidant defense (namely, peroxiredoxins, methionine sulfoxide reductases, sulfiredoxin, and glutathione peroxidases), metabolism, and proteostasis were monitored for cross-link formation following treatment of Saccharomyces cerevisiae with DVSF. Several proteins screened, including multiple oxidant defense proteins, underwent intermolecular and/or intramolecular cross-linking in response to DVSF. Specific redox-active cysteines within a subset of DVSF targets were found to influence cross-linking; in addition, DVSF-mediated cross-linking of its targets was impaired in cells first exposed to oxidants. Since cross-linking appeared to involve redox-active cysteines in these proteins, we examined whether potential redox partners became cross-linked to them upon DVSF treatment. Specifically, we found that several substrates of thioredoxins were cross-linked to the cytosolic thioredoxin Trx2 in cells treated with DVSF. However, other DVSF targets, like the peroxiredoxin Ahp1, principally formed intra-protein cross-links upon DVSF treatment. Moreover, additional protein targets, including several known to undergo S-glutathionylation, were conjugated via DVSF to glutathione. Our results indicate that DVSF is of potential use as a chemical tool for irreversibly trapping and discovering thiol-based redox partnerships within cells.
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Affiliation(s)
- Kristin M Allan
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Matthew A Loberg
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Juliet Chepngeno
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Jennifer E Hurtig
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Susmit Tripathi
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Min Goo Kang
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Jonathan K Allotey
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Afton H Widdershins
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Jennifer M Pilat
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Herbert J Sizek
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Wesley J Murphy
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Matthew R Naticchia
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Joseph B David
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States
| | - Kevin A Morano
- Department of Microbiology & Molecular Genetics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - James D West
- Biochemistry & Molecular Biology Program, Departments of Biology and Chemistry, The College of Wooster, Wooster, OH, United States.
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Pacuła AJ, Kaczor KB, Wojtowicz A, Antosiewicz J, Janecka A, Długosz A, Janecki T, Ścianowski J. New glutathione peroxidase mimetics-Insights into antioxidant and cytotoxic activity. Bioorg Med Chem 2016; 25:126-131. [PMID: 28029457 DOI: 10.1016/j.bmc.2016.10.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 10/11/2016] [Accepted: 10/15/2016] [Indexed: 12/17/2022]
Abstract
A series of N-alkyl benzisoselenazol-3(2H)-ones has been obtained and transformed to corresponding diselenides by the reduction with sodium borohydride. Additionally, efficient methodology for the oxidative Se-N bond formation by potassium iodate has been presented, new conversion of diselenide to benzisoselenazolone was observed. The GPx-like activity of all synthetized derivatives has been evaluated by NMR. N-Allyl diselenide was up to five times better antioxidant than ebselen. Anticancer capacity towards MCF7 and DU145 cancer cells has been also tested. The highest antiproliferative activity was obtained for N-cyclohexyl benzisoselenazolone.
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Affiliation(s)
- Agata J Pacuła
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarin Street, 87-100 Torun, Poland
| | - Katarzyna B Kaczor
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 1 Debinki Street, 80-211 Gdansk, Poland
| | - Angelika Wojtowicz
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 1 Debinki Street, 80-211 Gdansk, Poland
| | - Jędrzej Antosiewicz
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdansk, 1 Debinki Street, 80-211 Gdansk, Poland
| | - Anna Janecka
- Department of Biomolecular Chemistry, Faculty of Medicine, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Angelika Długosz
- Department of Biomolecular Chemistry, Faculty of Medicine, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland
| | - Tomasz Janecki
- Institute of Organic Chemistry, Lodz University of Technology, Zeromskiego 116, 90-924 Lodz, Poland
| | - Jacek Ścianowski
- Department of Organic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarin Street, 87-100 Torun, Poland.
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Ghoochani N, Karandish M, Mowla K, Haghighizadeh MH, Jalali MT. The effect of pomegranate juice on clinical signs, matrix metalloproteinases and antioxidant status in patients with knee osteoarthritis. J Sci Food Agric 2016; 96:4377-4381. [PMID: 26804926 DOI: 10.1002/jsfa.7647] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 01/18/2016] [Accepted: 01/19/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Osteoarthritis (OA) is one of the commonest forms of musculoskeletal disorders that leads to joint degeneration and has a major impact on patients' quality of life. Experimental and in vitro studies have suggested the protective roles of pomegranate juice (PJ) as a rich antioxidant source for mitigating cartilage inflammation. In this interventional study, 38 patients with knee OA were randomly divided into two groups: PJ or control for 6 weeks to evaluate the effect of this intervention on clinical signs, inflammation and antioxidant status. RESULTS Significant decreases in Western Ontario and McMaster Universities Osteoarthritis index (WOMAC) total score (P = 0.01), stiffness score (P = 0.00) and physical function score (P = 0.01) were observed in PJ group after the intervention. The means of serum levels of matrix metalloproteinase (MMP)-13 was significantly decreased (P = 0.02) and glutathione peroxidase was increased in the intervention group compared with the control group after the study period (P = 0.02). CONCLUSIONS According to the findings of this clinical trial, PJ consumption can improve physical function and stiffness, decrease breakdown cartilage enzymes and increase antioxidant status in patients with knee OA. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Nasrin Ghoochani
- Nutrition and Metabolic Diseases Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Majid Karandish
- Nutrition and Metabolic Diseases Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Karim Mowla
- Department of Internal Medicine, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Hossein Haghighizadeh
- Department of Biostatics and Epidemiology, Faculty of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Taha Jalali
- Hyperlipidemia Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Xia X, Hua C, Xue S, Shi B, Gui G, Zhang D, Wang X, Guo L. Response of selenium-dependent glutathione peroxidase in the freshwater bivalve Anodonta woodiana exposed to 2,4-dichlorophenol,2,4,6-trichlorophenol and pentachlorophenol. Fish Shellfish Immunol 2016; 55:499-509. [PMID: 27291351 DOI: 10.1016/j.fsi.2016.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 06/08/2016] [Accepted: 06/08/2016] [Indexed: 06/06/2023]
Abstract
2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (2,4,6-TCP), and pentachlorophenol (PCP) pose a health risk to aquatic organism and humans, and are recognized as persistent priority pollutants. Selenium dependent glutathione peroxidase (Se-GPx) belongs to the family of selenoprotein, which acts mainly as an antioxidant role in the cellular defense system. In the current study, a Se-GPx full length cDNA was cloned from Anodonta woodiana and named as AwSeGPx. It had a characteristic codon at 165TGA167 that corresponds to selenocysteine(Sec) amino acid as U44. The full length cDNA consists of 870 bp, an open reading frame (ORF) of 585 bp encoded a polypeptide of 195 amino in which conserved domain (68LGFPCNQF75) and a glutathione peroxide-1 GPx active site (32GKVILVENVASLUGTT47) were observed. Additionally, the eukaryotic selenocysteine insertion sequence (SECIS) was conserved in the 3'UTR. The AwSeGPx amino acid sequence exhibited a high similarity with that of other Se-GPx. Real-time PCR analysis revealed that AwSeGPx mRNA had a widely distribution, but the highest level was observed in hepatopancreas. AwSeGPx mRNA expression was significantly up-regulated in hepatopancreas, gill and hemocytes after 2,4-DCP, 2,4,6-TCP and PCP exposure. Under similar environment, clams A. woodiana showed a more sensitive to PCP than that of 2,4-DCP and 2,4,6-TCP. These results indicate that AwSeGPx plays a protective role in eliminating oxidative stress derived from 2,4-DCP, 2,4,6-TCP and PCP treatment.
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Affiliation(s)
- Xichao Xia
- Basal Medicine Institution of Nanyang Medical College, Nanyang 473041, Henan Province, China; State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Centre for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Chunxiu Hua
- Basal Medicine Institution of Nanyang Medical College, Nanyang 473041, Henan Province, China
| | - Shipeng Xue
- Basal Medicine Institution of Nanyang Medical College, Nanyang 473041, Henan Province, China
| | - Bingqin Shi
- Basal Medicine Institution of Nanyang Medical College, Nanyang 473041, Henan Province, China
| | - Gaixia Gui
- Basal Medicine Institution of Nanyang Medical College, Nanyang 473041, Henan Province, China
| | - Dongxian Zhang
- Basal Medicine Institution of Nanyang Medical College, Nanyang 473041, Henan Province, China
| | - Xiying Wang
- Basal Medicine Institution of Nanyang Medical College, Nanyang 473041, Henan Province, China
| | - Lianghong Guo
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Centre for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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Lin YH, Chen YP, Liu TP, Chien FC, Chou CM, Chen CT, Mou CY. Approach To Deliver Two Antioxidant Enzymes with Mesoporous Silica Nanoparticles into Cells. ACS Appl Mater Interfaces 2016; 8:17944-17954. [PMID: 27353012 DOI: 10.1021/acsami.6b05834] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Reactive oxygen species (ROS) are important factors in many clinical diseases. However, direct delivery of antioxidant enzymes into cells is difficult due to poor cell uptake. A proper design of delivery of enzymes by nanoparticles is very desirable for therapeutic purposes. To overcome the cell barrier problem, a designed mesoporous silica nanoparticle (MSN) system with attached TAT-fusion denatured enzyme for enhancing cell membrane penetration has been developed. Simultaneous delivery of two up-downstream antioxidant enzymes, superoxide dismutase (SOD) and glutathione peroxidase(GPx), reveals synergistic efficiency of ROS scavenging, compared to single antioxidant enzyme delivery. TAT peptide conjugation provided a facile nonendocytosis cell uptake and escape from endosome while moving and aggregating along the cytoskeleton that would allow them to be close to each other at the same time, resulting in the cellular antioxidation cascade reaction. The two-enzyme delivery shows a significant synergistic effect for protecting cells against ROS-induced cell damage and cell cycle arrest. The nanocarrier strategy for enzyme delivery demonstrates that intracellular anti-ROS cascade reactions could be regulated by multifunctional MSNs carrying image fluorophore and relevant antioxidation enzymes.
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Affiliation(s)
- Yu-Hsuan Lin
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
| | | | - Tsang-Pai Liu
- Mackay Junior College of Medicine , Nursing and Management, Taipei 112, Taiwan
- Department of Surgery, Mackay Memorial Hospital , Taipei 104, Taiwan
| | - Fan-Ching Chien
- Department of Optics and Photonics, National Central University , Taoyuan City 320, Taiwan
| | | | | | - Chung-Yuan Mou
- Department of Chemistry, National Taiwan University , Taipei 106, Taiwan
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40
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Dias FA, Gandara ACP, Perdomo HD, Gonçalves RS, Oliveira CR, Oliveira RLL, Citelli M, Polycarpo CR, Santesmasses D, Mariotti M, Guigó R, Braz GR, Missirlis F, Oliveira PL. Identification of a selenium-dependent glutathione peroxidase in the blood-sucking insect Rhodnius prolixus. Insect Biochem Mol Biol 2016; 69:105-114. [PMID: 26392061 DOI: 10.1016/j.ibmb.2015.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 08/27/2015] [Accepted: 08/31/2015] [Indexed: 06/05/2023]
Abstract
The selenium-dependent glutathione peroxidase (SeGPx) is a well-studied enzyme that detoxifies organic and hydrogen peroxides and provides cells or extracellular fluids with a key antioxidant function. The presence of a SeGPx has not been unequivocally demonstrated in insects. In the present work, we identified the gene and studied the function of a Rhodnius prolixus SeGPx (RpSeGPx). The RpSeGPx mRNA presents the UGA codon that encodes the active site selenocysteine (Sec) and a corresponding Sec insertion sequence (SECIS) in the 3' UTR region. The encoded protein includes a signal peptide, which is consistent with the high levels of GPx enzymatic activity in the insect's hemolymph, and clusters phylogenetically with the extracellular mammalian GPx03. This result contrasts with all other known insect GPxs, which use a cysteine residue instead of Sec and cluster with the mammalian phospholipid hydroperoxide GPx04. RpSeGPx is widely expressed in insect organs, with higher expression levels in the fat body. RNA interference (RNAi) was used to reduce RpSeGPx gene expression and GPx activity in the hemolymph. Adult females were apparently unaffected by RpSeGPx RNAi, whereas first instar nymphs showed a three-day delay in ecdysis. Silencing of RpSeGPx did not alter the gene expression of the antioxidant enzymes catalase, xanthine dehydrogenase and a cysteine-GPx, but it reduced the levels of the dual oxidase and NADPH oxidase 5 transcripts that encode for enzymes releasing extracellular hydrogen peroxide/superoxide. Collectively, our data suggest that RpSeGPx functions in the regulation of extracellular (hemolymph) redox homeostasis of R. prolixus.
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Affiliation(s)
- Felipe A Dias
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ana C P Gandara
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Hugo D Perdomo
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renata S Gonçalves
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carolina R Oliveira
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Raquel L L Oliveira
- Laboratório de Bioquímica de Vetores de Doenças, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marta Citelli
- Departamento de Nutrição Básica e Experimental, Instituto de Nutrição, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Carla R Polycarpo
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Brazil
| | - Didac Santesmasses
- Bioinformatics and Genomics Programme, Centre for Genomic Regulation, Dr. Aiguader 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain
| | - Marco Mariotti
- Bioinformatics and Genomics Programme, Centre for Genomic Regulation, Dr. Aiguader 88, 08003 Barcelona, Spain; Department of Medicine, Division of Genetics, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Roderic Guigó
- Bioinformatics and Genomics Programme, Centre for Genomic Regulation, Dr. Aiguader 88, 08003 Barcelona, Spain
| | - Gloria R Braz
- Laboratório de Bioquímica de Vetores de Doenças, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Brazil
| | - Fanis Missirlis
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN 2508, Zacatenco, Mexico City, Mexico
| | - Pedro L Oliveira
- Laboratório de Bioquímica de Artrópodes Hematófagos, Instituto de Bioquímica Médica, Programa de Biologia Molecular e Biotecnologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Brazil.
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Zou H, Sun H, Wang L, Zhao L, Li J, Dong Z, Luo Q, Xu J, Liu J. Construction of a smart temperature-responsive GPx mimic based on the self-assembly of supra-amphiphiles. Soft Matter 2016; 12:1192-1199. [PMID: 26616916 DOI: 10.1039/c5sm02074c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Glutathione peroxidase (GPx) is a major defense against hydroperoxides as a kind of seleno-enzyme that protects cells from oxidative damage. A supramolecular vesicle with controllable GPx activity and morphology has been successfully constructed by the self-assembly of supra-amphiphiles formed by host-guest recognition between cyclodextrin and adamantane derivatives. By introducing thermosensitive poly(N-isopropylacrylamide) (PNIPAM) scaffolds and the catalytic moiety selenium into adamantane and cyclodextrin, respectively, the complex of catalysis-functionalized cyclodextrin with thermosensitivity-functionalized adamantane directed the formation of a supramolecular vesicle which acted as a GPx mimic at 37 °C. The self-assembled nanoenzyme exhibited an obvious temperature responsive characteristic and high GPx-like catalytic activity promoting the reduction of hydrogen peroxide (H2O2) with glutathione (GSH) as the reducing substrate at 37 °C. However, the vesicle disassembled when the temperature decreased to 25 °C due to the transition of PNIPAM between the coil and the globule. Interestingly, the catalytic activity changed along with the transformation of morphologies. The vesicle structure self-assembled at 37 °C provided the favorable microenvironment for the enzymatic reaction, hence we successfully developed a temperature-responsive nanoenzyme model. Moreover, the catalytic activity of the thermosensitive GPx mimic exhibited excellent reversibility and typical saturation kinetics behaviour similar to a natural enzyme catalyst. It is assumed that the proposed GPx model not only has remarkable advantages such as easy functionalization and facile preparation but also provided a new way to develop intelligent responsive materials.
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Affiliation(s)
- Huixin Zou
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
| | - Hongcheng Sun
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
| | - Liang Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
| | - Linlu Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
| | - Jiaxi Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
| | - Zeyuan Dong
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
| | - Quan Luo
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
| | - Jiayun Xu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
| | - Junqiu Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
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42
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Orian L, Mauri P, Roveri A, Toppo S, Benazzi L, Bosello-Travain V, De Palma A, Maiorino M, Miotto G, Zaccarin M, Polimeno A, Flohé L, Ursini F. Selenocysteine oxidation in glutathione peroxidase catalysis: an MS-supported quantum mechanics study. Free Radic Biol Med 2015; 87:1-14. [PMID: 26163004 DOI: 10.1016/j.freeradbiomed.2015.06.011] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/18/2015] [Accepted: 06/09/2015] [Indexed: 12/31/2022]
Abstract
Glutathione peroxidases (GPxs) are enzymes working with either selenium or sulfur catalysis. They adopted diverse functions ranging from detoxification of H(2)O(2) to redox signaling and differentiation. The relative stability of the selenoenzymes, however, remained enigmatic in view of the postulated involvement of a highly unstable selenenic acid form during catalysis. Nevertheless, density functional theory calculations obtained with a representative active site model verify the mechanistic concept of GPx catalysis and underscore its efficiency. However, they also allow that the selenenic acid, in the absence of the reducing substrate, reacts with a nitrogen in the active site. MS/MS analysis of oxidized rat GPx4 complies with the predicted structure, an 8-membered ring, in which selenium is bound as selenenylamide to the protein backbone. The intermediate can be re-integrated into the canonical GPx cycle by glutathione, whereas, under denaturing conditions, its selenium moiety undergoes β-cleavage with formation of a dehydro-alanine residue. The selenenylamide bypass prevents destruction of the redox center due to over-oxidation of the selenium or its elimination and likely allows fine-tuning of GPx activity or alternate substrate reactions for regulatory purposes.
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Affiliation(s)
- Laura Orian
- Department of Chemistry, University of Padova, Italy
| | - Pierluigi Mauri
- Institute for Biomedical Technologies, National Research Council, Milano, Italy
| | | | - Stefano Toppo
- Department of Molecular Medicine, University of Padova, Italy
| | - Louise Benazzi
- Institute for Biomedical Technologies, National Research Council, Milano, Italy
| | | | - Antonella De Palma
- Institute for Biomedical Technologies, National Research Council, Milano, Italy
| | | | - Giovanni Miotto
- Department of Molecular Medicine, University of Padova, Italy
| | - Mattia Zaccarin
- Department of Molecular Medicine, University of Padova, Italy
| | | | - Leopold Flohé
- Department of Molecular Medicine, University of Padova, Italy.
| | - Fulvio Ursini
- Department of Molecular Medicine, University of Padova, Italy
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43
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Zhao Y, Yang KJ, Li ZT, Zhao CJ, Xu JY, Hu XW, Shi XX, Ma LF. [Alleviation of salt stress during maize seed germination by presoaking with exogenous sugar]. Ying Yong Sheng Tai Xue Bao 2015; 26:2735-2742. [PMID: 26785556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The maize variety Kenyu 6 was used to study the effects of exogenous glucose (Glc) and sucrose (Suc) on salt tolerance of maize seeds at germination stage under 150 mmol · L(-1) NaCl treatment. Results showed that under salt stress condition, 0.5 mmol · L(-1) exogenous Glc and Suc presoaking could promote seed germination and early seedling growth. Compared with the salt treatment, Glc presoaking increased the shoot length, radicle length and corresponding dry mass up to 1.5, 1.3, 2.1 and 1.8 times, and those of the Suc presoaking treatment increased up to 1.7, 1.3. 2.7 and 1.9 times, respectively. Exogenous Glc and Suc presoaking resulted in decreased levels of thiobarbituric acid reactive substances (TBARS) and hydrogen peroxide (H2O2) content of maize shoot under salt stress, which were lowered by 24.9% and 20.6% respectively. Exogenous Glc and Suc presoaking could increase the activities of superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione peroxidase (GPX), glutathione reductase (GR) and induce glucose-6-phosphate dehydrogenase (G6PDH) activity of maize shoot under salt stress. Compared with the salt treatment. Glc presoaking increased the activity of SOD, APX, GPX, GR and G6PDH by 66.2%, 62.9%, 32.0%, 38.5% and 50.5%, and those of the Suc presoaking increased by 67.5%, 59.8%, 30.0%, 38.5% and 50.4%, respectively. Glc and Suc presoaking also significantly increased the contents of ascorbic acid (ASA) and glutathione (GSH), ASA/DHA and GSH/GSSG. The G6PDH activity was found closely related with the strong antioxidation capacity induced by exogenous sugars. In addition, Glc and Suc presoaking enhanced K+/Na+ in maize shoot by 1.3 and 1.4 times of water soaking salt treatment, respectively. These results indicated that exogenous Glc and Suc presoaking could improve antioxidation capacity of maize seeds and maintain the in vivo K+/Na+ ion balance to alleviate the inhibitory effect of salt stress on maize seed germination.
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44
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Wang K, Redeker V, Madiona K, Melki R, Kabani M. The 26S Proteasome Degrades the Soluble but Not the Fibrillar Form of the Yeast Prion Ure2p In Vitro. PLoS One 2015; 10:e0131789. [PMID: 26115123 PMCID: PMC4482727 DOI: 10.1371/journal.pone.0131789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 06/08/2015] [Indexed: 12/02/2022] Open
Abstract
Yeast prions are self-perpetuating protein aggregates that cause heritable and transmissible phenotypic traits. Among these, [PSI+] and [URE3] stand out as the most studied yeast prions, and result from the self-assembly of the translation terminator Sup35p and the nitrogen catabolism regulator Ure2p, respectively, into insoluble fibrillar aggregates. Protein quality control systems are well known to govern the formation, propagation and transmission of these prions. However, little is known about the implication of the cellular proteolytic machineries in their turnover. We previously showed that the 26S proteasome degrades both the soluble and fibrillar forms of Sup35p and affects [PSI+] propagation. Here, we show that soluble native Ure2p is degraded by the proteasome in an ubiquitin-independent manner. Proteasomal degradation of Ure2p yields amyloidogenic N-terminal peptides and a C-terminal resistant fragment. In contrast to Sup35p, fibrillar Ure2p resists proteasomal degradation. Thus, structural variability within prions may dictate their ability to be degraded by the cellular proteolytic systems.
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Affiliation(s)
- Kai Wang
- Paris-Saclay Institute of Neuroscience, Centre National de la Recherche Scientifique, Gif-sur-Yvette, France
| | - Virginie Redeker
- Paris-Saclay Institute of Neuroscience, Centre National de la Recherche Scientifique, Gif-sur-Yvette, France
| | - Karine Madiona
- Paris-Saclay Institute of Neuroscience, Centre National de la Recherche Scientifique, Gif-sur-Yvette, France
| | - Ronald Melki
- Paris-Saclay Institute of Neuroscience, Centre National de la Recherche Scientifique, Gif-sur-Yvette, France
- * E-mail: (RM); (MK)
| | - Mehdi Kabani
- Paris-Saclay Institute of Neuroscience, Centre National de la Recherche Scientifique, Gif-sur-Yvette, France
- * E-mail: (RM); (MK)
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Zhou XM, Shimanovich U, Herling TW, Wu S, Dobson CM, Knowles TPJ, Perrett S. Enzymatically Active Microgels from Self-Assembling Protein Nanofibrils for Microflow Chemistry. ACS Nano 2015; 9:5772-81. [PMID: 26030507 PMCID: PMC4537113 DOI: 10.1021/acsnano.5b00061] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 06/01/2015] [Indexed: 05/20/2023]
Abstract
Amyloid fibrils represent a generic class of protein structure associated with both pathological states and with naturally occurring functional materials. This class of protein nanostructure has recently also emerged as an excellent foundation for sophisticated functional biocompatible materials including scaffolds and carriers for biologically active molecules. Protein-based materials offer the potential advantage that additional functions can be directly incorporated via gene fusion producing a single chimeric polypeptide that will both self-assemble and display the desired activity. To succeed, a chimeric protein system must self-assemble without the need for harsh triggering conditions which would damage the appended functional protein molecule. However, the micrometer to nanoscale patterning and morphological control of protein-based nanomaterials has remained challenging. This study demonstrates a general approach for overcoming these limitations through the microfluidic generation of enzymatically active microgels that are stabilized by amyloid nanofibrils. The use of scaffolds formed from biomaterials that self-assemble under mild conditions enables the formation of catalytic microgels while maintaining the integrity of the encapsulated enzyme. The enzymatically active microgel particles show robust material properties and their porous architecture allows diffusion in and out of reactants and products. In combination with microfluidic droplet trapping approaches, enzymatically active microgels illustrate the potential of self-assembling materials for enzyme immobilization and recycling, and for biological flow-chemistry. These design principles can be adopted to create countless other bioactive amyloid-based materials with diverse functions.
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Affiliation(s)
- Xiao-Ming Zhou
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, Beijing 100101, China
- University of the Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, China
| | - Ulyana Shimanovich
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Therese W. Herling
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Si Wu
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, Beijing 100101, China
| | - Christopher M. Dobson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Tuomas P. J. Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
- Address correspondence to ,
| | - Sarah Perrett
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Chaoyang District, Beijing 100101, China
- Address correspondence to ,
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46
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Kieliszek M, Błażejak S, Bzducha-Wróbel A. Influence of Selenium Content in the Culture Medium on Protein Profile of Yeast Cells Candida utilis ATCC 9950. Oxid Med Cell Longev 2015; 2015:659750. [PMID: 26185592 PMCID: PMC4491405 DOI: 10.1155/2015/659750] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 05/25/2015] [Accepted: 05/31/2015] [Indexed: 11/17/2022]
Abstract
Selenium is an essential trace element for human health and it has been recognized as a component of several selenoproteins with crucial biological functions. It has been identified as a component of active centers of many enzymes, as well as integral part of biologically active complexes. The aim of the study was to evaluate the protein content and amino acid profile of the protein of fodder yeast Candida utilis ATCC 9950 cultured in media control and experimental enriched selenium. Protein analysis was performed using SDS-PAGE method consisting of polyacrylamide gel electrophoresis in the presence of SDS. The highest contents of soluble protein (49,5 mg/g) were found in yeast cells after 24-hour culture conducted in control (YPD) medium. In the presence of selenium there were determined small amounts of protein content. With increasing time of yeast culture (to 72 hours) the control and experimental media were reported to reduce soluble protein content. In electropherogram proteins from control cultures was observed the presence of 10 protein fractions, but in all the experimental cultures (containing 20, 30, and 40 mg/L selenium) of 14 protein fractions. On the basis of the molecular weights of proteins, it can be concluded that they were among others: selenoprotein 15 kDa and selenoprotein 18 kDa.
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Affiliation(s)
- Marek Kieliszek
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159C, 02-776 Warsaw, Poland
| | - Stanisław Błażejak
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159C, 02-776 Warsaw, Poland
| | - Anna Bzducha-Wróbel
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159C, 02-776 Warsaw, Poland
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47
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McNeil NMR, McDonnell C, Hambrook M, Back TG. Oxidation of Disulfides to Thiolsulfinates with Hydrogen Peroxide and a Cyclic Seleninate Ester Catalyst. Molecules 2015; 20:10748-62. [PMID: 26111166 PMCID: PMC6272456 DOI: 10.3390/molecules200610748] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 11/24/2022] Open
Abstract
Cyclic seleninate esters function as mimetics of the antioxidant selenoenzyme glutathione peroxidase. They catalyze the reduction of harmful peroxides with thiols, which are converted to disulfides in the process. The possibility that the seleninate esters could also catalyze the further oxidation of disulfides to thiolsulfinates and other overoxidation products under these conditions was investigated. This has ramifications in potential medicinal applications of seleninate esters because of the possibility of catalyzing the unwanted oxidation of disulfide-containing spectator peptides and proteins. A variety of aryl and alkyl disulfides underwent facile oxidation with hydrogen peroxide in the presence of catalytic benzo-1,2-oxaselenolane Se-oxide affording the corresponding thiolsulfinates as the principal products. Unsymmetrical disulfides typically afforded mixtures of regioisomers. Lipoic acid and N,N′-dibenzoylcystine dimethyl ester were oxidized readily under similar conditions. Although isolated yields of the product thiolsulfinates were generally modest, these experiments demonstrate that the method nevertheless has preparative value because of its mild conditions. The results also confirm the possibility that cyclic seleninate esters could catalyze the further undesired oxidation of disulfides in vivo.
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Affiliation(s)
- Nicole M R McNeil
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada.
| | - Ciara McDonnell
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada.
| | - Miranda Hambrook
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada.
| | - Thomas G Back
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada.
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48
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Bayse CA, Shoaf AL. Effect of Methoxy Substituents on the Activation Barriers of the Glutathione Peroxidase-Like Mechanism of an Aromatic Cyclic Seleninate. Molecules 2015; 20:10244-52. [PMID: 26046321 PMCID: PMC6272359 DOI: 10.3390/molecules200610244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 05/26/2015] [Accepted: 06/01/2015] [Indexed: 01/09/2023] Open
Abstract
Density functional theory (DFT) models including explicit water molecules have been used to model the redox scavenging mechanism of aromatic cyclic seleninates. Experimental studies have shown that methoxy substitutions affect the rate of scavenging of reactive oxygen species differently depending upon the position. Activities are enhanced in the para position, unaffected in the meta, and decreased in the ortho. DFT calculations show that the activation barrier for the oxidation of the selenenyl sulfide, a proposed key intermediate, is higher for the ortho methoxy derivative than for other positions, consistent with the low experimental conversion rate.
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Affiliation(s)
- Craig A Bayse
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, VA 23529, USA.
| | - Ashley L Shoaf
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, VA 23529, USA.
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Abstract
Cells respond to many stimuli by transmitting signals through redox-regulated pathways. It is generally accepted that in many instances signal transduction is via reversible oxidation of thiol proteins, although there is uncertainty about the specific redox transformations involved. The prevailing view is that thiol oxidation occurs by a two electron mechanism, most commonly involving hydrogen peroxide. Free radicals, on the other hand, are considered as damaging species and not generally regarded as important in cell signaling. This paper examines whether it is justified to dismiss radicals or whether they could have a signaling role. Although there is no direct evidence that radicals are involved in transmitting thiol-based redox signals, evidence is presented that they are generated in cells when these signaling pathways are activated. Radicals produce the same thiol oxidation products as two electron oxidants, although by a different mechanism, and at this point radical-mediated pathways should not be dismissed. There are unresolved issues about how radical mechanisms could achieve sufficient selectivity, but this could be possible through colocalization of radical-generating and signal-transducing proteins. Colocalization is also likely to be important for nonradical signaling mechanisms and identification of such associations should be a priority for advancing the field.
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Affiliation(s)
- Christine C Winterbourn
- Centre for Free Radical Research, Department of Pathology, University of Otago, P.O. Box 4345, Christchurch, New Zealand.
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50
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Kumar RTK, Cherukuri K, Prasad S. Single-phase dielectrophoretic and electrorotation studies using three dimensional electrodes for cell characterization. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2014:4987-90. [PMID: 25571112 DOI: 10.1109/embc.2014.6944744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A novel electrokinetic approach using single-phase electrorotation for the label-free manipulation and characterization of biological cells is presented. A single shell model was used to theoretically design and develop an experimental strategy for biological particle characterization. As a study model, electro-rotation of glutathione agarose (GA) beads was studied using three-dimensional spatially oriented micro-needle setup. Effect of electrical parameters (i) voltage: from 0-10 Vpp and (ii) frequency: 0-100 MHz was evaluated on a heterogeneous mixture of GA beads (35-150 microns). The relationship of the electrical parameters to rotational frequency of the beads was studied. This paper demonstrates a simple and easy to implement prototype for electrokinetic characterization of particles with translational potential for biological cells.
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