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Wang S, Zang W, Peng M, Miao L, Wu A, Zhang Y. Multicolor detection of glutathione by manganese dioxide nanosheets and gold nanotetrapods based on an anti-etching mechanism. Talanta 2024; 268:125366. [PMID: 37925881 DOI: 10.1016/j.talanta.2023.125366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/22/2023] [Accepted: 10/26/2023] [Indexed: 11/07/2023]
Abstract
Glutathione (GSH) is a crucial non-protein thiol and an indispensable endogenous antioxidant. The aberrant expression of GSH in plasma and cytosol is closely related to numerous diseases, including cancer. Therefore, establishing a sensitive method for analyzing GSH has important application value for biomedical research and clinical medical detection. Herein, A method for the rapid and simple detection of GSH was proposed, which is based on an anti-etching mechanism by utilizing gold nanotetrapods (Au NTPs) and manganese dioxide nanosheets (MnO2 NSs). In the absence of GSH, Au NTPs solution can cause a distinct color change from gray-green to red through the etching effect of MnO2 NSs. However, in the presence of GSH, the redox reaction between GSH and MnO2 NSs inhibits the etching of Au NTPs by MnO2 NSs, and Au NTPs solution maintains persistent gray-green color. The colorimetric probe exhibited excellent selectivity for GSH. The limits of detection for GSH were 43.5 nM (UV-vis spectrum) and 0.25 μM (naked eyes). The sensing technique exhibited excellent linearity between wavelength shift and GSH concentration within the range of 0.25 μM-1.5 μM. The outcomes of GSH detection in actual biological samples demonstrate that this probe has the potential to be applied to GSH detection in intricate biological samples.
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Affiliation(s)
- Shengwen Wang
- Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology, Zhejiang International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices, Ningbo Cixi Institute of Biomedical Engineering, Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China; School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China
| | - Wen Zang
- Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology, Zhejiang International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices, Ningbo Cixi Institute of Biomedical Engineering, Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Minjie Peng
- Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology, Zhejiang International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices, Ningbo Cixi Institute of Biomedical Engineering, Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Lijing Miao
- Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology, Zhejiang International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices, Ningbo Cixi Institute of Biomedical Engineering, Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Aiguo Wu
- Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology, Zhejiang International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices, Ningbo Cixi Institute of Biomedical Engineering, Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Yujie Zhang
- Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology, Zhejiang International Cooperation Base of Biomedical Materials Technology and Application, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices, Ningbo Cixi Institute of Biomedical Engineering, Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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2
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Yu S, Wang J, Liang M, Shang J, Chen Y, Liu X, Song D, Wang F. Rational Engineering of a Multifunctional DNA Assembly for Enhanced Antibacterial Efficacy and Accelerated Wound Healing. Adv Healthc Mater 2024; 13:e2300694. [PMID: 37846795 DOI: 10.1002/adhm.202300694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Indexed: 10/18/2023]
Abstract
DNA-based assemblies hold immense prospects for antibacterial application, yet are constrained by their poor specificity and deficient antibacterial delivery. Herein, the fabrication of a versatile rolling circle amplification (RCA)-sustained DNA assembly is reported, encoding simultaneously with multivalent aptamers and tandem antibacterial agents, for target-specific and efficient antibacterial application. In the compact RCA-sustained antibacterial platform, the facilely organized multivalent aptamers guarantee the target bacteria-specific delivery of sufficient antibacterial agents which is assembled through DNA-stabilizing silver nanostructures. It is shown that the biocompatible DNA system could enhance bacteria elimination and simultaneously facilitate wound healing in vivo. By virtue of the programmable RCA assembly, the present RCA-sustained system provides a highly modular and scalable approach to design versatile multifunctional therapeutic systems.
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Affiliation(s)
- Shanshan Yu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, College of Chemistry and Molecular Sciences, Research Institute of Shenzhen, Wuhan University, Wuhan, 430072, P. R. China
| | - Jing Wang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, College of Chemistry and Molecular Sciences, Research Institute of Shenzhen, Wuhan University, Wuhan, 430072, P. R. China
| | - Meijuan Liang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, College of Chemistry and Molecular Sciences, Research Institute of Shenzhen, Wuhan University, Wuhan, 430072, P. R. China
| | - Jinhua Shang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, College of Chemistry and Molecular Sciences, Research Institute of Shenzhen, Wuhan University, Wuhan, 430072, P. R. China
| | - Yingying Chen
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, College of Chemistry and Molecular Sciences, Research Institute of Shenzhen, Wuhan University, Wuhan, 430072, P. R. China
| | - Xiaoqing Liu
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, College of Chemistry and Molecular Sciences, Research Institute of Shenzhen, Wuhan University, Wuhan, 430072, P. R. China
| | - Dengpeng Song
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, 430200, P. R. China
| | - Fuan Wang
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University, College of Chemistry and Molecular Sciences, Research Institute of Shenzhen, Wuhan University, Wuhan, 430072, P. R. China
- Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, 430072, P. R. China
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3
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Han G, Ju Y, Zhao H. Synthesis of amphiphilic block-type macromolecular brushes with cleavable pendant chains and fabrication of micelle-templated polymer nanocapsules. Polym Chem 2016. [DOI: 10.1039/c5py01940k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Macromolecular brushes with cleavable pendant chains were synthesized by controlled free radical polymerizations and functional nanocapsules were fabricated on the basis of the brush polymers.
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Affiliation(s)
- Guangda Han
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- College of Chemistry
- Nankai University; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Yuanyuan Ju
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- College of Chemistry
- Nankai University; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
| | - Hanying Zhao
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- College of Chemistry
- Nankai University; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300071
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4
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Adam ANI. Some mechanisms of the protective effect of ischemic preconditioning on rat liver ischemia-reperfusion injury. Int J Gen Med 2014; 7:483-9. [PMID: 25382983 PMCID: PMC4222984 DOI: 10.2147/ijgm.s66766] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Ischemia-reperfusion (I/R) injury is a multifactorial process that affects graft function after liver transplantation. An understanding of the mechanisms involved in I/R injury is essential for the design of therapeutic strategies to improve the outcome of liver transplantation. The generation of reactive oxygen species subsequent to reoxygenation inflicts tissue damage and initiates a cascade of deleterious cellular responses, leading to inflammation, cell death, and ultimate organ failure. Increasing experimental evidence has suggested that Kupffer cells and T-cells mediate activation of neutrophil inflammatory responses. Activated neutrophils infiltrate the injured liver in parallel with increased expression of adhesion molecules on endothelial cells. The heme oxygenase system is among the most critical of the cytoprotective mechanisms activated during cellular stress, exerting antioxidant and anti-inflammatory functions, modulating the cell cycle, and maintaining the microcirculation. Finally, the activation of toll-like receptors on Kupffer cells may play a fundamental role in exploring new therapeutic strategies based on the concept that hepatic I/R injury represents a case for host “innate” immunity. In the present study, there was a significant decrease in hepatic activity of glycogen in the I/R group as compared with corresponding values in the control group. On the other hand, there was a significant increase in the hepatic activity of glycogen in the I/R-IP (ischemic preconditioning) group as compared with corresponding values in the I/R group.
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5
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Post-column labeling techniques in amino acid analysis by liquid chromatography. Anal Bioanal Chem 2013; 405:7957-92. [DOI: 10.1007/s00216-013-7127-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 06/04/2013] [Accepted: 06/06/2013] [Indexed: 10/26/2022]
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Does the acanthocephalan parasite Polymorphus minutus modify the energy reserves and antitoxic defences of its intermediate host Gammarus roeseli? Parasitology 2012; 139:1054-61. [PMID: 22405348 DOI: 10.1017/s0031182012000315] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
In disturbed environments, infected organisms have to face both parasitic and chemical stresses. Although this situation is common, few studies have been devoted to the effects of infection on hosts' energy reserves and antitoxic defence capacities, while parasite survival depends on host survival. In this study, we tested the consequences of an infection by Polymorphus minutus on the energy reserves (protein, lipid and glycogen) and antioxidant defence capacities (reduced glutathione, γ-glutamylcysteine ligase activity) of Gammarus roeseli males and females, in the absence of chemical stress. Moreover, malondialdehyde concentration was used as a toxicity biomarker. The results revealed that in infected G. roeseli, whatever their gender and the sampling month, protein and lipid contents were lower, but glycogen contents were higher. This could be explained by the fact that the parasite diverts part of the host's energy for its own development. Moreover, glutathione concentrations and γ-glutamylcysteine ligase activity were both lower, which could lead to lower antitoxic defence in the host. These results suggest negative effects on individuals in the case of additional stress (e.g. pollutant exposure). In the absence of chemical stress, the lower malondialdehyde level in infected gammarids could imply a probable protective effect of the parasite.
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7
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Christoph Schäfer, Carsten Fels, Ma. Gamma-Glutamyl Transferase Expression in Higher-grade Astrocytic Glioma. Acta Oncol 2009. [DOI: 10.1080/02841860118008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Zhang F, Bartels MJ, Geter DR, Jeong YC, Schisler MR, Wood AJ, Kan L, Gollapudi BB. Quantitation of glutathione by liquid chromatography/positive electrospray ionization tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:3608-3614. [PMID: 18937228 DOI: 10.1002/rcm.3776] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Glutathione (GSH) is a tripeptide composed of glutamate, cysteine, and glycine. It is present in practically all cells and has several important roles, such as preventing the oxidation of the sulfhydryl groups of proteins within a cell. Evidence for GSH deficiency or depletion has been found in a variety of diseases and toxicity-related studies, including diabetes and induction of oxidative stress to form reactive oxygen species which cause DNA, lipid, and protein oxidations. A simple, selective, and sensitive analytical method for measuring low levels of GSH in biological fluids would therefore be desirable to conduct GSH deficiency or depletion-related mechanistic toxicity studies. Here a method for both low- and high-level quantitation of GSH from cultured cells and rat liver tissues via liquid chromatography/positive electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) has been developed. The lower limit of quantitation (LOQ) of the method was 5 ng/mL. The method is linear over a wide dynamic concentration range of 5.0 to 5000.0 ng/mL, with a correlation coefficient R2 > 0.99. The intra-day assay precision relative standard deviation (RSD) values for all quality control (QC) samples were < or =16.31%, with accuracy values ranging from 94.13 to 97.80%. The inter-day assay precision RSD values for all QC samples were < or =15.94%, with accuracy values ranging from 94.51 to 100.29%. With this method, low levels of GSH from diethyl maleate (DEM)-treated mouse lymphoma cells, and GSH in rat liver tissues, were quantified.
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Affiliation(s)
- Fagen Zhang
- Toxicology and Environmental Research & Consulting, The Dow Chemical Company, 1803 Building, Midland, MI 48674, USA.
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9
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Gales G, Penninckx M, Block JC, Leroy P. Role of glutathione metabolism status in the definition of some cellular parameters and oxidative stress tolerance ofSaccharomyces cerevisiaecells growing as biofilms. FEMS Yeast Res 2008; 8:667-75. [DOI: 10.1111/j.1567-1364.2008.00401.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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10
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Kattan Z, Minig V, Leroy P, Dauça M, Becuwe P. Role of manganese superoxide dismutase on growth and invasive properties of human estrogen-independent breast cancer cells. Breast Cancer Res Treat 2007; 108:203-15. [PMID: 17473980 DOI: 10.1007/s10549-007-9597-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2006] [Accepted: 04/05/2007] [Indexed: 10/23/2022]
Abstract
Manganese superoxide dismutase (MnSOD) is known to play a role in cancer. MnSOD exerts a tumor suppressive effect in estrogen-dependent human breast cancer cells. In the present study we investigated the in vitro role of MnSOD in the growth of some aggressive and highly metastatic estrogen-independent breast cancer cells, i.e., MDA-MB231 and SKBR3 cells. We show that estrogen-independent cells expressed a significantly higher basal MnSOD level compared to estrogen-dependent human breast cancer cell lines (MCF-7 and T47D). For MDA-MB231 cells, the high-MnSOD level was accompanied by an overproduction of intracellular hydrogen peroxide (H2O2) and by a low expression of the major H2O2-detoxifying enzymes, catalase, and peroxiredoxin 3, compared to MCF-7 cells. Suppression of MnSOD expression by antisense RNA was associated with a decrease of H2O2 content and caused a stimulation of growth with a reduced cell doubling time but induced a decrease of colony formation. Furthermore, treatment of MDA-MB231 cells with H2O2 scavengers markedly reduced tumor cell growth and colony formation. In addition, MnSOD suppression or treatment with H2O2 scavengers reduced the invasive properties of MDA-MB231 cells up to 43%, with a concomitant decrease of metalloproteinase-9 activity. We conclude that MnSOD plays a role in regulating tumor cell growth and invasive properties of estrogen-independent metastatic breast cancer cells. These action are mediated by MnSOD-dependent H2O2 production. In addition, these results suggest that MnSOD up-regulation may be one mechanism that contributes to the development of metastatic breast cancers.
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Affiliation(s)
- Zilal Kattan
- Laboratoire de Biologie Cellulaire du Développement, EA 3446-IFR111 (Proliférateurs de Peroxysomes), Université Henri Poincaré-Nancy I, Faculté des Sciences, B.P. 239, 54506, Vandoeure-les-Nancy, France
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11
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Florent S, Malaplate-Armand C, Youssef I, Kriem B, Koziel V, Escanyé MC, Fifre A, Sponne I, Leininger-Muller B, Olivier JL, Pillot T, Oster T. Docosahexaenoic acid prevents neuronal apoptosis induced by soluble amyloid-β oligomers. J Neurochem 2006; 96:385-95. [PMID: 16300635 DOI: 10.1111/j.1471-4159.2005.03541.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A growing body of evidence supports the notion that soluble oligomers of amyloid-beta (Abeta) peptide interact with the neuronal plasma membrane, leading to cell injury and inducing death-signalling pathways that could account for the increased neurodegeneration occurring in Alzheimer's disease (AD). Docosahexaenoic acid (DHA, C22:6, n-3) is an essential polyunsaturated fatty acid in the CNS and has been shown in several epidemiological and in vivo studies to have protective effects against AD and cognitive alterations. However, the molecular mechanisms involved remain unknown. We hypothesized that DHA enrichment of plasma membranes could protect neurones from apoptosis induced by soluble Abeta oligomers. DHA pre-treatment was observed to significantly increase neuronal survival upon Abeta treatment by preventing cytoskeleton perturbations, caspase activation and apoptosis, as well as by promoting extracellular signal-related kinase (ERK)-related survival pathways. These data suggest that DHA enrichment probably induces changes in neuronal membrane properties with functional outcomes, thereby increasing protection from soluble Abeta oligomers. Such neuroprotective effects could be of major interest in the prevention of AD and other neurodegenerative diseases.
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Affiliation(s)
- Sabrina Florent
- Jeune Equipe Lipidomix, Institut National Polytechnique de Lorraine, Laboratoire Médecine et Thérapeutique Moléculaire, Vandoeuvre-lès-Nancy, France
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12
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Begni B, Brighina L, Sirtori E, Fumagalli L, Andreoni S, Beretta S, Oster T, Malaplate-Armand C, Isella V, Appollonio I, Ferrarese C. Oxidative stress impairs glutamate uptake in fibroblasts from patients with Alzheimer's disease. Free Radic Biol Med 2004; 37:892-901. [PMID: 15304259 DOI: 10.1016/j.freeradbiomed.2004.05.028] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2004] [Accepted: 05/28/2004] [Indexed: 10/26/2022]
Abstract
Oxidative stress has been demonstrated in Alzheimer's disease (AD) brain and may affect glutamate transport (GT), thereby leading to excitotoxic neuronal death. Since oxidative stress markers have been shown also in peripheral tissues, we investigated possible GT alterations in fibroblast cultures obtained from 18 patients with AD and 15 control patients and analyzed the effects of the lipoperoxidation product 4-hydroxynonenal (4-HNE) and antioxidants. Basal GT was decreased by 60% in fibroblasts from patients with AD versus control patients. Exposure to HNE did not affect GT in control patients, but it reduced GT by 50% in patients with AD, without any concomitant change in cell viability; conversely, HNE exposure induced a larger increase in ROS intracellular levels in AD than in control fibroblasts. Glutathione and N-acetylcysteine completely blocked 4-HNE effects and also increased basal uptake in AD cells. Moreover, inhibition of glutathione synthesis in control fibroblasts by pretreatment with buthionine sulfoximine resulted in GT reduction (40%) and an increase in ROS levels after exposure to 4-HNE. Nevertheless, since there are no differences between GSH basal level in controls and patients with AD, the alteration of other antioxidant systems cannot be excluded. Our study supports the hypothesis of a systemic impairment of GT in AD, possibly linked to oxidative stress and to reduced antioxidant defenses, which may be partially reversed by antioxidant treatment. Therefore, we suggest fibroblast cultures as a tool for exploring pathogenetic mechanisms and possible therapeutic strategies in patients with AD.
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Affiliation(s)
- Barbara Begni
- Department of Neuroscience and Biomedical Technologies, University of Milano-Bicocca, 20052 Monza, Italy
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13
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Dziurla MA, Leroy P, Strünkmann GW, Salhi M, Lee DU, Camacho P, Heinz V, Müller JA, Paul E, Ginestet P, Audic JM, Block JC. Measurement of glutathione in activated sludges. WATER RESEARCH 2004; 38:236-244. [PMID: 14630122 DOI: 10.1016/j.watres.2003.08.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Thermal, electric, mechanical or oxidative stress seem a promising way to reduce the production of excess activated sludge during biological wastewater treatment. However, the adaptation and the resistance of the sludge microbial ecosystem to stress conditions is a major question as it may definitively limit the effect of some treatments. Defence mechanisms developed by aerobic organisms, in particular, in response to oxidative stress involve various antioxidant activities and compounds such as glutathione. An HPLC method was developed for measuring reduced and total glutathione (GSH and GSHt) in perchloric acid sludge extracts. The method was sensitive, highly specific and validated for linearity, precision and recovery. Considering the extraction yield and the oxidation of GSH during extract storage, the measured GSH concentration was estimated to represent 60% of the GSH content from activated sludges. GSHt ranged from 0.32 to 3.34micromolg(-1) volatile solids and the GSH/GSHt ratio ranged from 32% to 91%. Measurements performed on sludges stressed in precise conditions selected to reach a reduction of sludge production showed a decrease of GSH and GSHt concentrations with thermal, mechanical, electric and ozone stress.
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Affiliation(s)
- M A Dziurla
- Laboratoire de Chimie, Physique et Microbiologie pour l'Environnement-LCPME, Unité Mixte de Recherche-UMR 7564, CNRS-Université Henri Poincaré, Nancy 1, Faculté de Pharmacie-Pôle de l'eau, 15, avenue du Charmois, 54500 Vandoeurve-les-Nancy, France
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Aberkane H, Frank P, Galteau MM, Wellman M. Acivicin induces apoptosis independently of gamma-glutamyltranspeptidase activity. Biochem Biophys Res Commun 2001; 285:1162-7. [PMID: 11478776 DOI: 10.1006/bbrc.2001.5297] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Inhibition of cellular gamma-glutamyltranspeptidase (GGT) enzyme activity by its specific inhibitor acivicin is frequently used in studies aimed at demonstrating the physiological role of this enzyme. However, because acivicin is a glutamine antagonist, it also inhibits many other glutamine-dependent enzymes involved in purine and pyrimidine biosynthesis. The objective of the present work is to determine whether acivicin exhibits apoptotic properties and the significance of GGT activity level in the response to acivicin treatment. We compared acivicin (0-150 microM) effect on V79 cell lines expressing or not expressing human GGT. Apoptosis was assayed by annexin-V staining, cell cycle analysis, and caspase activation using flow cytometry. We found that acivicin causes a dose- and time-dependent apoptosis in the GGT-negative V79 cell line as well as in its GGT-positive counterpart line. This is the evidence that acivicin induces apoptosis in V79 cell independently of their GGT activity level.
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Affiliation(s)
- H Aberkane
- Thiols et Fonctions Cellulaires, Faculty of Pharmacy, Laboratoire de Biochimie, 30, rue Lionnois, Nancy, 54000, France
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15
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Remião F, Carmo H, Carvalho F, Bastos ML. Simultaneous determination of reduced and oxidized glutathione in freshly isolated rat hepatocytes and cardiomyocytes by HPLC with electrochemical detection. Biomed Chromatogr 2000; 14:468-73. [PMID: 11113926 DOI: 10.1002/1099-0801(200011)14:7<468::aid-bmc10>3.0.co;2-c] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Glutathione and glutathione disulphide constitute an essential thiol redox system present in the cell. The balance in favour of the latter is an indication of oxidative stress. Glutathione and glutathione disulphide quantification in isolated cells may therefore be essential for the evaluation of mechanistic and comparative studies of toxic xenobiotics. In this study, a rapid and sensitive isocratic reverse-phase high-performance liquid chromatographic method using coulometric detection was implemented for the simultaneous detection of glutathione and glutathione disulphide, in freshly isolated hepatocytes and cardiomyocytes of the rat. The method implemented proved to be effective for the measurement of glutathione and glutathione disulphide in control conditions and for the detection of variations in this redox system, induced by tert-butylhydroperoxide. tert-Butylhydroperoxide is an organic peroxide, which has been used as a model molecule for inducing oxidative stress in isolated cells. A comparative study with a previously published HPLC-electrochemical detection method was performed.
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Affiliation(s)
- F Remião
- ICETA/CEQUP, Toxicology Department, Faculty of Pharmacy, University of Porto, 4050/047 Porto, Portugal.
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Borud O, Mortensen B, Mikkelsen IM, Leroy P, Wellman M, Huseby NE. Regulation of γ-glutamyltransferase in cisplatin-resistant and -sensitive colon carcinoma cells after acute cisplatin and oxidative stress exposures. Int J Cancer 2000. [DOI: 10.1002/1097-0215(20001101)88:3<464::aid-ijc20>3.0.co;2-f] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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Parmentier C, Wellman M, Nicolas A, Siest G, Leroy P. Simultaneous measurement of reactive oxygen species and reduced glutathione using capillary electrophoresis and laser-induced fluorescence detection in cultured cell lines. Electrophoresis 1999; 20:2938-44. [PMID: 10546831 DOI: 10.1002/(sici)1522-2683(19991001)20:14<2938::aid-elps2938>3.0.co;2-m] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A capillary zone electrophoretic (CZE) method coupled with laser-induced fluorescence (LIF) was developed for the simultaneous determination of two important intracellular parameters related to oxidative stress (i.e. reactive oxygen species, ROS, and reduced glutathione, GSH). This rapid and sensitive method was applied to the study of oxidative stress in cultured V79 fibroblast cells. The fluorogenic reagents selected were: (i) dihydrorhodamine-123 (DHR-123) which is converted intracellularly by ROS to the fluorescent rhodamine-123 dye (Rh-123), and (ii) naphthalene-2,3-dicarboxaldehyde (NDA), which reacts quickly with GSH in cell extracts to produce a fluorescent adduct. Separation of Rh-123, GSH-NDA and gamma-glutamylcysteine-NDA adducts was performed using an uncoated fused-silica capillary and a 100 mM borate buffer, pH 9.2, at 20 degrees C and at an applied voltage of 25 kV; LIF detection was operated using an argon laser. The cell line was also tested for its ability to alleviate oxidative stress induced by tert-butylhydroperoxide (t-BuOOH). Exposure to t-BuOOH (up to 3 mm for 2 h) did not affect the intracellular ROS and GSH concentrations. At higher (4-10 mM) t-BuOOH concentrations, an inverse relationship between the concentrations of ROS and GSH was obtained, showing that the present method can readily evaluate the gradual consumption of the primary cellular scavenger of ROS which occurs simultaneously with the increase of oxidative insult.
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Affiliation(s)
- C Parmentier
- Centre du Médicament, UPRES EA-ER 635, Laboratoire de Chimie Analytique; UMR 7561, Faculté des Sciences Pharmaceutiques et Biologiques, Université Henri Poincaré, Nancy, France
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Manna L, Valvo L, Betto P. Determination of oxidized and reduced glutathione in pharmaceuticals by reversed-phase high-performance liquid chromatography with dual electrochemical detection. J Chromatogr A 1999. [DOI: 10.1016/s0021-9673(99)00427-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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19
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Parmentier C, Leroy P, Wellman M, Nicolas A. Determination of cellular thiols and glutathione-related enzyme activities: versatility of high-performance liquid chromatography-spectrofluorimetric detection. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1998; 719:37-46. [PMID: 9869362 DOI: 10.1016/s0378-4347(98)00414-9] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A high-performance liquid chromatography (HPLC) method to determine the most important cellular thiols [reduced glutathione (GSH), cysteine, gamma-glutamylcysteine and cysteinylglycine] is described. Separation relies upon isocratic ion-pairing reversed-phase chromatography and detection is operated by spectrofluorimetry coupled with post-column derivatization reactions using either N-(1-pyrenyl)maleimide (NPM) or ortho-phthalaldehyde (OPA). When OPA is used without co-reagent, only GSH and gamma-glutamylcysteine are detected (heterobifunctional reaction). However, either the OPA reaction in the presence of glycine in the mobile phase (thiol-selective reaction) or NPM allows the detection of all the cited thiols. The HPLC system has been validated as concerning linearity, accuracy and precision. The low detection limits reached (in the pmol range for each thiol injected) allow the screening and the quantification of thiols (as NPM derivatives) in V79cl and V79HGGT cells as well as the measurement of two cytosolic enzymes related to the glutathione synthesis, using the heterobifunctional OPA reaction.
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Affiliation(s)
- C Parmentier
- Laboratoire de Chimie Analytique, Faculté des Sciences Pharmaceutiques et Biologiques, Nancy, France
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20
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Krull IS, Strong R, Sosic Z, Cho BY, Beale SC, Wang CC, Cohen S. Labeling reactions applicable to chromatography and electrophoresis of minute amounts of proteins. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 1997; 699:173-208. [PMID: 9392375 DOI: 10.1016/s0378-4347(97)00157-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chromatography and electrophoresis have become extremely valuable and important methods for the separation, purification, detection and analysis of biopolymers and HPLC/HPCE may become the premier, preferable approaches for both qualitative and quantitative analyses of most proteins, especially from recombinant materials. This includes smaller peptides, polypeptides, proteins, antibodies and all types of protein or antibody-conjugates (antibody-enzyme, protein-fluorescent probe, antibody-drug and so forth). This entire Topical Issue of Journal of Chromatography emphasizes the application of chromatography and electrophoresis to protein analysis. This particular review deals with approaches to the selective tagging or labeling of proteins at trace (minute) levels, again using either chromatography or electrophoresis, with the emphasis on modern HPLC/HPCE methods and approaches. We discuss here both pre- and post-column labeling methods and reagents, techniques for realizing selective labeling of proteins or antibodies, applicable approaches to protein preconcentration in both HPLC and HPCE areas and in general, methods for improving (lowering) detection limits for proteins utilizing chemical or physical derivatization and/or preconcentration techniques. There are really two major goals or emphases in that which follows: (1) methods for selective labeling of proteins prior to or after HPLC/HPCE and (2) labeling of proteins at trace levels for improved separation-detection and lowered detection limits. We discuss here a large number of specific references related to both pre- and post-column/capillary derivatizations for proteins, as well as methods for improved detectability in both HPLC and HPCE by, for example, analyte preconcentration on a solid-phase extractor or membrane support, capillary isotachophoresis and other methods. Selective reactions or derivatizations on proteins refers to the ability to tag the protein at specific (e.g. reactive amino sites) in a controlled manner, with the products having the same number of tags all at the very same site or sites. The products are all the same species, having the same number of tags at the same locations on the protein. Selective reactions can also refer to the idea of tagging all of the protein sample at only a single, same site or at all available sites, homogeneously.
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Affiliation(s)
- I S Krull
- Department of Chemistry, Northeastern University, Boston, MA 02115, USA
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21
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Raggi MA, Mandrioli R, Bugamelli F, Sabbioni C. Comparison of analytical methods for quality control of pharmaceutical formulations containing glutathione. Chromatographia 1997. [DOI: 10.1007/bf02490925] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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Salmon F, Kohl W. Use of fresh and cryopreserved hepatocytes to study the metabolism of pesticides in food-producing animals and rats. Xenobiotica 1996; 26:803-11. [PMID: 8879144 DOI: 10.3109/00498259609046750] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
1. The possibility of using hepatocytes from food-producing animals in order to determine the metabolic routes of pesticides has been studied using a strobilurin fungicide (BAS 490 F). Hepatocytes suspensions were prepared from goat, pig, hen, and rat and the major metabolites were compared with those obtained in vivo. 2. The hepatocytes gave metabolite patterns matching qualitatively with in vivo results, but no good quantitative correlation was found. 3. A freezing and thawing method was developed using liquid nitrogen and a programmable freezer, which allows acceptable recoveries of functional cells as assessed by glutathione and cytochrome P450 contents, and phase I and II enzymatic activities (including 7-ethoxycoumarin-O-deethylase, ethoxyresorufin-O-deethylase, glutathione-S-transferase, and UDP-glucuronosyl transferase), with 60-70% viability. 4. The cells were damaged through freezing as indicated by the efflux of glutathione (40-60% of the intracellular content), but remained able to metabolize BAS 490 F, partially like fresh cells. A good qualitative but no quantitative matching of the metabolite patterns before and after cryopreservation was found, indicating that the metabolic activities are affected to variable extents during the freezing process. 5. The use of fresh and cryopreserved cells as models for metabolism and species comparison, and as a versatile tool to synthesize metabolites, is discussed.
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Affiliation(s)
- F Salmon
- BASF-AG, Crop Protection, Animal Metabolism and Residue Chemistry, Limburgerhof, Germany
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Thioudellet C, Oster T, Leroy P, Nicolas A, Wellman M. Influence of sample preparation on cellular glutathione recovery from adherent cells in culture. Cell Biol Toxicol 1995; 11:103-11. [PMID: 7583870 DOI: 10.1007/bf00767495] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
During the last decade, the unbound glutathione content of cultured adherent cells has become a very important biological marker for many pharmacological and toxicological in vitro studies with regard to the protective role of the tripeptide in its reduced form (GSH). However, the literature does not provide extensive information on the influence of sample preparation on cellular GSH and thiol analyses. Using the fibroblast-like V79 cell line as model, we undertook a comparative study of the efficiency of different procedures reported in the literature with respect to GSH recovery. Depending on the preanalytical step, up to 10-fold discrepancies could be observed in the recovery of intracellular GSH. Different parameters that must be controlled in order to maximize GSH recovery are discussed. The optimal strategy consisted in rapid perchloric acid deproteinization performed directly in the dish, which was extremely valuable for preparing GSH samples from adherent cells, and especially from cells expressing elevated gamma-glutamyl transferase activity.
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Affiliation(s)
- C Thioudellet
- Centre du Médicament, URA CNRS 597, Faculté des Sciences Pharmaceutiques et Biologiques, Université de Nancy I, France
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Gotti R, Andrisano V, Gatti R, Cavrini V, Candeletti S. Determination of glutathione in biological samples by high performance liquid chromatography with fluorescence detection. Biomed Chromatogr 1994; 8:306-8. [PMID: 7888735 DOI: 10.1002/bmc.1130080612] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A selective and sensitive high performance liquid chromatographic (HPLC) method has been developed for the determination of reduced glutathione (GSH) in biological samples (rat liver, spleen and plasma). The method involved a prechromatographic thiol derivatization with methyl 4-(6-methoxynaphthalen-2-yl)-4-oxo-2-butenoate; the reaction was rapid (5 min) under mild conditions (pH 7.5 and ambient temperature) and selective for the sulphydryl group. The thiol adducts were separated on a reversed-phase C-18 column using acetonitrile: 0.05 M triethylammonium (TEA) phosphate (pH 4) solution 32:68 (v/v) as the mobile phase. Fluorescence detection (lambda em = 450 nm; lambda exc = 310 nm) was used and the detection limit (S/N = 3) was about 0.5 pmole of the injected GSH adduct. The method was also applied to the determination of total glutathione in rat plasma after a preliminary reduction with dithiothreitol.
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Affiliation(s)
- R Gotti
- Department of Pharmaceutical Sciences, Bologna, Italy
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Thioudellet C, Oster T, Wellman M, Siest G. Molecular and functional characterization of recombinant human gamma-glutamyltransferase. Coupling of its activity to glutathione levels in V79 cells. EUROPEAN JOURNAL OF BIOCHEMISTRY 1994; 222:1009-16. [PMID: 7913033 DOI: 10.1111/j.1432-1033.1994.tb18952.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We previously described the establishment of a transfected cell line (V79HGGT) that stably produces the highest recombinant human gamma-glutamyltransferase (GGT) activity. We now report the utilization of V79HGGT as a model system for studying human GGT. The papain-solubilized recombinant enzyme has been highly purified from cultured cells by a new procedure. Studies on the purified enzyme, either by N-terminal sequencing or by characterization of its enzymic activities, confirmed that recombinant GGT shares structural and catalytic identity with native human enzymes. The circular dichroism analysis indicated an alpha-helical content of 19%. Based on these data, we have undertaken a study on the functional consequences of elevated GGT activity on the reduced glutathione (GSH) content. GSH status was followed in V79 and V79HGGT cells throughout growth. A particular pattern was observed for each cell line, depending on, but differentially affected by, alteration of the culture medium. Elevated GGT activity was associated with a 2.5-fold reduced GSH content, clearly suggesting a negative influence of the highly expressed enzyme on the GSH level under normal growth conditions. Possible mechanisms involved are proposed. Our findings pointed out that, among the GSH-related enzymes, GGT could constitute an important factor determining the steady-state content of GSH.
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