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Andresen E, Morina F, Bokhari SNH, Koník P, Küpper H. Disturbed electron transport beyond PSI changes metabolome and transcriptome in Zn-deficient soybean. Biochim Biophys Acta Bioenerg 2024; 1865:149018. [PMID: 37852568 DOI: 10.1016/j.bbabio.2023.149018] [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] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 09/01/2023] [Accepted: 10/10/2023] [Indexed: 10/20/2023]
Abstract
Low Zn availability in soils is a problem in many parts of the world, with tremendous consequences for food and feed production because Zn deficiency affects the yield and quality of plants. In this study we investigated the consequences of Zn-limitation in hydroponically cultivated soybean (Glycine max L.) plants. Parameters of photosynthesis biophysics were determined by spatially and spectrally resolved Kautsky and OJIP fluorescence kinetics and oxygen production at two time points (V4 stage, after five weeks, and pod development stage, R5-R6, after 8-10 weeks). Lower NPQ at 730 nm and lower quantum yield of electron transport flux until PSI acceptors were observed, indicating an inhibition of the PSI acceptor side. Metalloproteomics showed that down-regulation of Cu/Zn-superoxide dismutase (CuZnSOD) and Zn‑carbonic anhydrase (CA) were primary consequences of Zn-limitation. This explained the effects on photosynthesis in terms of decreased use of excitons, which consequently led to oxidative stress. Indeed, untargeted metabolomics revealed an accumulation of lipid oxidation products in the Zn-deficient leaves. Further response to Zn deficiency included up-regulation of gene expression of cell wall metabolism, response to (a)biotic stressors and antioxidant activity, which correlated with accumulation of antioxidants, Vit B6, (iso)flavonoids and phytoalexins.
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Affiliation(s)
- Elisa Andresen
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic
| | - Filis Morina
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic
| | - Syed Nadeem Hussain Bokhari
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic
| | - Peter Koník
- University of South Bohemia, Faculty of Sciences, Department of Chemistry, Branišovská 1645/31a, 370 05 České Budějovice, Czech Republic
| | - Hendrik Küpper
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Laboratory of Plant Biophysics and Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic; University of South Bohemia, Faculty of Sciences, Department of Experimental Plant Biology, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
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Vieira JCS, Braga CP, Queiroz JVD, Cavecci-Mendonça B, Oliveira GD, Freitas NGD, Fernandes AAH, Fernandes MDS, Buzalaf MAR, Adamec J, Zara LF, Padilha PDM. The effects of mercury exposure on Amazonian fishes: An investigation of potential biomarkers. Chemosphere 2023; 316:137779. [PMID: 36632955 DOI: 10.1016/j.chemosphere.2023.137779] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 11/10/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 05/05/2023]
Abstract
Exposure to mercury can interfere with the expression of proteins and enzymes, compromise important pathways, such as apoptosis and glucose metabolism, and even induce the expression of metallothioneins. In this study, analytical techniques were used to determine the concentration of total mercury (THg) in muscle and liver tissue, protein pellets, and spots [using graphite furnace atomic absorption spectrometry (GFAAS)], and molecular techniques were used to identify metalloproteins present in mercury-associated protein spots. Thirty individuals from three different fish species, Cichla sp. (n = 10), Brachyplatystoma filamentosum (n = 10), and Semaprochilodus sp. (n = 10) from the Brazilian Amazon were used. Oxidative stress indicators [such as glutathione peroxidase (GSH-Px), catalase (CAT), superoxide dismutase (SOD), a marker of lipid peroxidation (LPO)] and the possible expression of metallothioneins in muscle and liver tissues were investigated. The two piscivorous species, Cichla sp. and B. filamentosum, presented the highest concentrations of mercury in their hepatic tissue, 1219 ± 15.00 and 1044 ± 13.6 μg kg-1, respectively, and in their muscle tissue, 101 ± 1.30 μg kg-1 and 87.4 ± 0.900 μg kg-1, respectively. The non-carnivorous species Semaprochilodus sp. had comparatively low concentrations of mercury in both its hepatic (852 ± 11.1 μg kg-1) and muscle (71.4 ± 0.930 μg kg-1) tissues. The presence of mercury was identified in 24 protein spots using GFAAS; concentrations ranged from 11.5 to 787 μg kg-1, and mass spectrometry identified 21 metal-binding proteins. The activities of GSH-Px, CAT, and SOD, related to oxidative stress, decreased proportionally as tissue Hg concentrations increased, while the levels of LPO markers increased, indicating the presence of stress. Our study results demonstrate possible mercury interference in oxidative stress markers (GSH-Px, CAT, SOD, and LPO), in addition to the identification of 21 metal-binding proteins as possible biomarkers of mercury exposure in fish.
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Affiliation(s)
| | | | - João Vitor de Queiroz
- São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, SP, Brazil
| | - Bruna Cavecci-Mendonça
- São Paulo State University (UNESP), Institute of Biosciences, Botucatu, São Paulo, Brazil
| | - Grasieli de Oliveira
- São Paulo State University (UNESP), Institute of Biosciences, Botucatu, São Paulo, Brazil
| | | | | | | | | | - Jiri Adamec
- University of Nebraska (UNL), Lincoln, United States
| | - Luiz Fabrício Zara
- University of Brasília (UNB), College of Planaltina, Distrito Federal, Brazil
| | - Pedro de Magalhães Padilha
- São Paulo State University (UNESP), Institute of Biosciences, Botucatu, São Paulo, Brazil; São Paulo State University (UNESP), School of Veterinary Medicine and Animal Science, Botucatu, SP, Brazil.
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Andresen E, Flores-Sanchez IJ, Brückner D, Bokhari SNH, Falkenberg G, Küpper H. Sublethal and lethal Cd toxicity in soybean roots specifically affects the metabolome, Cd binding to proteins and cellular distribution of Cd. J Hazard Mater 2023; 442:130062. [PMID: 36183514 DOI: 10.1016/j.jhazmat.2022.130062] [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] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Soybean (Glycine max (L.) Merr.) plants were exposed to various Cd concentrations from background and low non-toxic (0.5-50 nM) via sublethally toxic (< 550 nM) to highly, ultimately lethally toxic (3 µM) concentrations. Plants were cultivated hydroponically for 10 weeks until pod development stage of the control plants. The threshold and mechanism of sublethal Cd toxicity was investigated by metabolomics and metalloproteomics (HPLC-ICP-MS) measuring metal binding to proteins in the harvested roots. Spatial distribution of Cd was revealed by µXRF-CT. Specific binding of Cd to proteins already at 50 nM Cd revealed the likely high-affinity protein binding targets in roots, identified by protein purification from natural abundance. This revealed allantoinase, aquaporins, peroxidases and protein disulfide isomerase as the most likely high-affinity targets of Cd binding. Cd was deposited in cortex cell vacuoles at sublethal and bound to the cell walls of the outer cortex and the vascular bundle at lethal Cd. Cd binding to proteins likely inhibits them, and possibly induces detoxification mechanisms, as verified by metabolomics: allantoic acid and allantoate increased due to sublethal Cd toxicity. Changes of the Cd binding pattern indicated a detoxification strategy at lower Cd, but saturated binding sites at higher Cd concentrations.
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Affiliation(s)
- Elisa Andresen
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department Plant Biophysics and Biochemistry, Branišovská 31/1160, CZ-37005 České Budějovice, Czech Republic
| | - Isvett Josefina Flores-Sanchez
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department Plant Biophysics and Biochemistry, Branišovská 31/1160, CZ-37005 České Budějovice, Czech Republic
| | - Dennis Brückner
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Syed Nadeem Hussain Bokhari
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department Plant Biophysics and Biochemistry, Branišovská 31/1160, CZ-37005 České Budějovice, Czech Republic
| | - Gerald Falkenberg
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Hendrik Küpper
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department Plant Biophysics and Biochemistry, Branišovská 31/1160, CZ-37005 České Budějovice, Czech Republic; University of South Bohemia, Faculty of Science, Department of Experimental Plant Biology, Branišovská 31/1160, CZ-37005 České Budějovice, Czech Republic.
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Vieira JCS, de Oliveira G, Cavallini NG, Braga CP, Adamec J, Zara LF, Buzalaf MAR, de Magalhães Padilha P. Investigation of Protein Biomarkers and Oxidative Stress in Pinirampus pirinampu Exposed to Mercury Species from the Madeira River, Amazon-Brazil. Biol Trace Elem Res 2022; 200:1872-1882. [PMID: 34482504 DOI: 10.1007/s12011-021-02805-z] [Citation(s) in RCA: 1] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 06/18/2021] [Indexed: 12/27/2022]
Abstract
In recent decades, the scientific community has widely debated the contamination of fish in the Amazon region by mercury species. As the diet of riverside populations in the Amazon region is based mainly on fish, these populations are exposed to mercurial species that can cause serious and irreversible damage to their health. The risks of consuming fish exposed to mercurial species in the Amazon region have motivated toxicological investigations. However, the effect of mercurial species on protein and enzyme levels is still controversial. In this work, analytical and bioanalytical techniques Two-dimensional polyacrylamide gel electrophoresis [2D-PAGE] Graphite Furnace Atomic Absorption Spectrometry [GFAAS], and Mass Spectrometry in Sequence with Electrospray Ionization [ESI-MS/MS] were used to identify proteins associated with mercury (metal-binding protein) in muscle and liver tissues of the fish species Pinirampus pirinampu from the Madeira River, in the Brazilian Amazon. Enzymatic and lipid peroxidation analyses were also used to assess changes related to oxidative stress. Determinations of total mercury by GFAAS indicated higher concentrations in liver tissue (555 ± 19.0 µg kg-1) when compared to muscle tissue (60 ± 2.0 µg kg-1). The fractionation process of tissue proteomes by 2D-PAGE and subsequent mapping of mercury by GFAAS in the protein spots of the gels identified the presence of mercury in three spots of the liver tissue (concentrations in the range of 0.800 to 1.90 mg kg-1). The characterization of protein spots associated with mercury by ESI-MS/MS identified the enzymes triosephosphate isomerase A, adenylate kinase 2 mitochondrial, and glyceraldehyde-3-phosphate dehydrogenase as possible candidates for mercury exposure biomarkers. The muscle tissue did not show protein spots associated with mercury. Enzymatic activity decreased proportionally to the increase in mercury concentrations in the tissues.
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Affiliation(s)
| | - Grasieli de Oliveira
- Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | | | | | - Jiri Adamec
- University of Nebraska (UNL), Lincoln, NE, USA
| | - Luiz Fabrício Zara
- College of Planaltina, University of Brasília (UNB), Brasília, Distrito Federal, Brazil
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Ashraf N, Vítová M, Cloetens P, Mijovilovich A, Bokhari SNH, Küpper H. Effect of nanomolar concentrations of lanthanum on Desmodesmus quadricauda cultivated under environmentally relevant conditions. Aquat Toxicol 2021; 235:105818. [PMID: 33838497 DOI: 10.1016/j.aquatox.2021.105818] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Toxicity of lanthanides is generally regarded as low, and they even have been suggested to be beneficial at low concentrations. This research was conducted to investigate effects of Lanthanum (La) on Desmodesmus quadricauda, a freshwater green microalga. The algal cultures were treated with nanomolar La concentrations under controlled environmentally relevant conditions. Intracellular localization of La was analyzed with μXRF tomography in frozen-hydrated samples. At sublethal concentration (128 nM) La was in hotspots inside the cells, while at lethal 1387 nM that led to release of other ions (K, Zn) from the cells, La filled most of the cells. La had no clear positive effects on growth or photosynthetic parameters, but increasing concentrations led to a dramatic decrease in cell counts. Chlorophyll fluorescence kinetic measurements showed that La led to the inhibition of photosynthesis. Maximal photochemical quantum yield of the PSII reaction center in dark-adapted state (Fv/Fm) decreased at > 4.3 nM La during the 2nd week of treatment. Minimum dark-adapted fluorescence quantum yield (F0) increased at > 13.5 nM La during the 2nd week of treatment except for control (0.2 nM La, baseline from chemicals) and 0.3 nM La. NPQ at the beginning of the actinic light phase showed significant increase for all the treatments. Metalloproteomics by HPLC-ICPMS showed that La binds to a >500 kDa soluble protein complex already in the sub-nM range of La treatments, in the low nM range to a small-sized (3 kDa) soluble peptide, and at >100 nM La additionally binds to a 1.5 kDa ligand.
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Affiliation(s)
- Nermeen Ashraf
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department of Plant Biophysics and Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic; University of South Bohemia, Department of Experimental Plant Biology, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic
| | - Milada Vítová
- Czech Academy of Sciences, Institute of Microbiology, Centre Algatech, Laboratory of cell cycles of algae, Novohradská 237, Třeboň, Czech Republic
| | - Peter Cloetens
- ESRF - The European Synchrotron, beamline ID16A, Grenoble, France
| | - Ana Mijovilovich
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department of Plant Biophysics and Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic
| | - Syed Nadeem Hussain Bokhari
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department of Plant Biophysics and Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic
| | - Hendrik Küpper
- Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Department of Plant Biophysics and Biochemistry, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic; University of South Bohemia, Department of Experimental Plant Biology, Branišovská 31/1160, 370 05 České Budějovice, Czech Republic.
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6
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Lago L, Thomas ORB, Roberts BR. Choice of mobile phase: Implications for size exclusion chromatography-inductively coupled plasma-mass spectrometry analyses of copper, zinc and iron metalloproteins. J Chromatogr A 2020; 1616:460806. [PMID: 31916987 DOI: 10.1016/j.chroma.2019.460806] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 11/25/2022]
Abstract
The correct identification of the metalloproteins present in human tissues and fluids is essential to our understanding of the cellular mechanisms underpinning a host of health disorders. Separation and analysis of biological samples are typically done via size exclusion chromatography hyphenated with inductively coupled plasma-mass spectrometry (SEC-ICP-MS). Although this technique can be extremely effective in identification of potential metalloproteins, the choice of mobile phase may have a marked effect on results, results by adversely affecting metal-protein bonds of the metalloproteins of interest. To assess the choice of mobile phase on SEC-ICP-MS resolution and the resulting metalloproteome pattern, we analysed several different sample types (brain homogenate; Cu/Zn-superoxide dismutase (SOD1); a molecular weight standard mix containing ferritin (Ft), ceruloplasmin (Cp), cytochrome c (CytC), vitamin B12 (B12) and thyroglobulin (Tg) using six different mobile phase conditions (200 mM, pH 7.5 solutions of ammonium salts nitrate, acetate, and sulfate; HEPES, MOPS and Tris-HCl). Our findings suggest that ammonium nitrate, ammonium acetate and Tris-HCl are optimal choices for the mobile phase, with the specific choice being dependent on both the number of samples and method of detection that is hyphenated with separation. Furthermore, we found that MOPS, HEPES and ammonium sulfate mobile phases all caused significant changes to peak resolution, retention time and overall profile shape. MOPS and HEPES, in particular, produced additional Fe peaks that were not detected with any of the other mobile phases that were investigated. As well as this, MOPS and HEPES both caused significant concentration dependent matrix suppression of the internal standard.
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Affiliation(s)
- Larissa Lago
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Kenneth Myer Building, 30 Royal Parade, Parkville, Victoria, 3052, Australia
| | - Oliver R B Thomas
- School of BioSciences, The University of Melbourne, BioSciences 4, Royal Parade, Parkville, Victoria, 3052, Australia
| | - Blaine R Roberts
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA, 30322 USA.
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Wang H, Zhou Y, Xu X, Li H, Sun H. Metalloproteomics in conjunction with other omics for uncovering the mechanism of action of metallodrugs: Mechanism-driven new therapy development. Curr Opin Chem Biol 2020; 55:171-179. [PMID: 32200302 DOI: 10.1016/j.cbpa.2020.02.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 12/20/2022]
Abstract
Medicinal inorganic chemistry has been largely stimulated by the clinic success of platinum anticancer drugs. An array of metal-based drugs (e.g. platinum, gold, bismuth, and silver) are currently used clinically for the treatment of various diseases. Integrating multiomics approaches, particularly metalloproteomics, with other biochemical characterizations enables comprehensive understanding of cellular responses of metallodrugs, which in turn will guide the rational design of a new drug and modification of the presently used drugs. This review aims to summarize the recent progress in this area. We will describe the technology platforms and their applications for uncovering the mechanisms of action of metallodrugs, for which remarkable advances have been achieved recently. Moreover, we will also highlight the application of newly generated knowledge for the development of novel therapeutic strategies.
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Affiliation(s)
- Haibo Wang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Ying Zhou
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Xiaohan Xu
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China.
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Li Y, Li H, Li YF, Zhao J, Guo J, Wang R, Li B, Zhang Z, Gao Y. Evidence for molecular antagonistic mechanism between mercury and selenium in rice (Oryza sativa L.): A combined study using 1, 2-dimensional electrophoresis and SR-XRF techniques. J Trace Elem Med Biol 2018; 50:435-440. [PMID: 29066364 DOI: 10.1016/j.jtemb.2017.10.006] [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: 09/06/2017] [Revised: 09/25/2017] [Accepted: 10/13/2017] [Indexed: 11/16/2022]
Abstract
Mercury (Hg) is a hazardous chemical in the environment and can accumulate in the food chain. Selenium (Se) is a necessary element for human health and has antagonistic effects on Hg toxicity. In this work, we investigated the effect of Se on Hg containing and Hg-responsive proteins in rice using 1, 2-dimensional electrophoresis combined with SR-XRF techniques. Two weeks old rice seedlings were exposed to Hg and/or Se compounds. After 21days proteins in the rice roots were separated by electrophoresis and their metal contents were determined by X-ray fluorescence to identify Hg and Se responsive biomolecules. The results show that under Hg stress alone Hg is bound to proteins with molecular weights of 15-25kDa. With the addition of Se, a new Hg-containing protein band in the 55-70kDa range was also found, while the content of Hg in the 15-25kDa proteins decreased. Ten and nine new protein spots were identified after adding Se to inorganic Hg and methylmercury exposed roots, respectively. Adding Se regulates the abundance of proteins associated with carbohydrate and energy metabolism, stress response, cell cycle, and DNA replication indicating that these proteins mediate the antagonism of Se against Hg toxicity. This study helps us to better understand the molecular mechanism of Hg tolerance as well as the molecular antagonism between Hg and Se in rice plants.
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Affiliation(s)
- Yunyun Li
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10049, China; College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Hong Li
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10049, China
| | - Yu-Feng Li
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10049, China
| | - Jiating Zhao
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10049, China.
| | - Jingxia Guo
- College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Ru Wang
- College of Resources and Environment, Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Bai Li
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10049, China
| | - Zhiyong Zhang
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10049, China
| | - Yuxi Gao
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 10049, China.
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Donnell AM, Lewis S, Abraham S, Subramanian K, Figueroa JL, Deepe GS Jr, Vonderheide AP. Investigation of an optimal cell lysis method for the study of the zinc metalloproteome of Histoplasma capsulatum. Anal Bioanal Chem 2017; 409:6163-72. [PMID: 28801743 DOI: 10.1007/s00216-017-0556-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/20/2017] [Accepted: 07/31/2017] [Indexed: 10/19/2022]
Abstract
This work sought to assess optimal extraction conditions in the study of the metalloproteome of the dimorphic fungus Histoplasma capsulatum. One of the body's responses to H. capsulatum infection is sequestration of zinc within host macrophage (MØ), as reported by Vignesh et al. (Immunity 39:697-710, 2013) and Vignesh et al. (PLOS Pathog 9:E1003815, 2013). Thus, metalloproteins containing zinc were of greatest interest as it plays a critical role in survival of the fungus. One challenge in metalloproteomics is the preservation of the native structure of proteins to retain non-covalently bound metals. Many of the conventional cell lysis, separation, and identification techniques in proteomics are carried out under conditions that could lead to protein denaturation. Various cell lysis techniques were investigated in an effort to both maintain the metalloproteins during lysis and subsequent analysis while, at the same time, serving to be strong enough to break the cell wall, allowing access to cytosolic metalloproteins. The addition of 1% Triton x-100, a non-ionic detergent, to the lysis buffer was also studied. Seven lysis methods were considered and these included: Glass Homogenizer (H), Bead Beater (BB), Sonication Probe (SP), Vortex with 1% Triton x-100 (V, T), Vortex with no Triton x-100 (V, NT), Sonication Bath, Vortex, and 1% Triton x-100 (SB, V, T) and Sonication Bath, Vortex, and no Triton x-100 (SB, V, NT). A Qubit® Assay was used to compare total protein concentration and inductively coupled plasma-mass spectrometry (ICP-MS) was utilized for total metal analysis of cell lysates. Size exclusion chromatography coupled to ICP-MS (SEC-HPLC-ICP-MS) was used for separation of the metalloproteins in the cell lysate and the concentration of Zn over a wide molecular weight range was examined. Additional factors such as potential contamination sources were also considered. A cell lysis method involving vortexing H. capsulatum yeast cells with 500 μm glass beads in a 1% Triton x-100 lysis buffer (V, T) was found to be most advantageous to extract intact zinc metalloproteins as demonstrated by the highest Zn to protein ratio, 1.030 ng Zn/μg protein, and Zn distribution among high, mid, and low molecular weights suggesting the least amount of protein denaturation. Graphical abstract In this work, several cell lysis techniques and two lysis buffers were investigated to evaluate the preservation of the zinc metalloproteome of H. capsulatum while maintaining compatibility with the analytical techniques employed.
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Thomas G, Andresen E, Mattusch J, Hubáček T, Küpper H. Deficiency and toxicity of nanomolar copper in low irradiance-A physiological and metalloproteomic study in the aquatic plant Ceratophyllum demersum. Aquat Toxicol 2016; 177:226-236. [PMID: 27309311 DOI: 10.1016/j.aquatox.2016.05.016] [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: 03/03/2016] [Revised: 05/20/2016] [Accepted: 05/21/2016] [Indexed: 06/06/2023]
Abstract
Essential trace elements (Cu(2+), Zn(2+), etc) lead to toxic effects above a certain threshold, which is a major environmental problem in many areas of the world. Here, environmentally relevant sub-micromolar concentrations of Cu(2+) and simulations of natural light and temperature cycles were applied to the aquatic macrophyte Ceratophyllum demersum a s a model for plant shoots. In this low irradiance study resembling non-summer conditions, growth was optimal in the range 7.5-35nM Cu, while PSII activity (Fv/Fm) was maximal around 7.5nM Cu. Damage to the light harvesting complex of photosystem II (LHCII) was the first target of Cu toxicity (>50nM Cu) where Cu replaced Mg in the LHCII-trimers. This was associated with a subsequent decrease of Chl a as well as heat dissipation (NPQ). The growth rate was decreased from the first week of Cu deficiency. Plastocyanin malfunction due to the lack of Cu that is needed for its active centre was the likely cause of diminished electron flow through PSII (ΦPSII). The pigment decrease added to the damage in the photosynthetic light reactions. These mechanisms ultimately resulted in decrease of starch and oxygen production.
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Affiliation(s)
- George Thomas
- University of Konstanz, Department of Biology, D-78457 Konstanz, Germany
| | - Elisa Andresen
- University of Konstanz, Department of Biology, D-78457 Konstanz, Germany; Institute of Plant Molecular Biology, Department Plant Biophysics and Biochemistry, Biology Centre of the ASCR, Branišovská 31/1160, CZ-37005 České Budějovice, Czech Republic
| | - Jürgen Mattusch
- UFZ - Helmholtz Centre for Environmental Research, Department of Analytical Chemistry, Permoserstr. 15, D-04318 Leipzig, Germany
| | - Tomáš Hubáček
- Institute of Hydrobiology, Department of Hydrochemistry and Ecosystem Modelling, Biology Centre of the ASCR, Na Sádkách 7, 37005 České Budějovice, Czech Republic; SoWa National Research Infrastructure, Biology Centre of the ASCR, Na Sádkách 7, 37005 České Budějovice, Czech Republic
| | - Hendrik Küpper
- University of Konstanz, Department of Biology, D-78457 Konstanz, Germany; Institute of Plant Molecular Biology, Department Plant Biophysics and Biochemistry, Biology Centre of the ASCR, Branišovská 31/1160, CZ-37005 České Budějovice, Czech Republic; University of South Bohemia, Faculty of Biological Science, Branišovská 31/1160, CZ-37005 České Budějovice, Czech Republic.
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11
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Huynh TNS, Bourgeois D, Basset C, Vidaud C, Hagège A. Assessment of CE-ICP/MS hyphenation for the study of uranyl/protein interactions. Electrophoresis 2015; 36:1374-82. [PMID: 25630637 DOI: 10.1002/elps.201400471] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 12/27/2014] [Accepted: 01/11/2015] [Indexed: 11/06/2022]
Abstract
Identification of uranyl transport proteins is key to develop efficient detoxification approaches. Therefore, analytical approaches have to be developed to cope with the complexity of biological media and allow the analysis of metal speciation. CE-ICP/MS was used to combine the less-intrusive character and high separation efficiency of CE with the sensitive detection of ICP/MS. The method was based on the incubation of samples with uranyl prior to the separation. Electrophoretic buffers were compared to select a 10 mM Tris to 15 mM NaCl buffer, which enabled analyses at pH 7.4 and limited dissociation. This method was applied to the analysis of a serum. Two main fractions were observed. By comparison with synthetic mixtures of proteins, the first one was attributed to fetuin and in a lesser extent to HSA, and the second one to uranyl unbound to proteins. The analysis showed that fetuin was likely to be the main target of uranyl. CE-ICP/MS was also used to investigate the behavior of the fetuin-uranyl complex, in the presence of carbonate, an abundant complexing agent of uranyl in blood. This method enabled association constants determination, suggesting the occurrence of both FETUA(UO2(2+)) and FETUA(UO2(2+))(CO3(2-)) complexes, depending on the carbonate concentration.
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Affiliation(s)
- Thi-Ngoc Suong Huynh
- CEA/DSV/iBEB/SBTN, Laboratoire d'Etude des Protéines Cibles, Bagnols sur Cèze Cedex, France
| | - Damien Bourgeois
- Institut de Chimie Séparative de Marcoule, Laboratoire de Chimie et Physico-chimie des Actinides, Bagnols-sur-Cèze cedex, France
| | - Christian Basset
- CEA/DSV/iBEB/SBTN, Laboratoire d'Etude des Protéines Cibles, Bagnols sur Cèze Cedex, France
| | - Claude Vidaud
- CEA/DSV/iBEB/SBTN, Laboratoire d'Etude des Protéines Cibles, Bagnols sur Cèze Cedex, France
| | - Agnès Hagège
- CEA/DSV/iBEB/SBTN, Laboratoire d'Etude des Protéines Cibles, Bagnols sur Cèze Cedex, France.,CNRS, UMR 7265, CEA/DSV/iBEB, St. Paul Les Durance, France
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12
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Pozzi CMC, Braga CP, Vieira JCS, Cavecci B, Vitor de Queiroz J, de Souza Barbosa H, Arruda MAZ, Gozzo FC, Padilha PDM. Metal ions bound to the human milk immunoglobulin A: metalloproteomic approach. Food Chem 2014; 166:492-497. [PMID: 25053085 DOI: 10.1016/j.foodchem.2014.06.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 04/04/2014] [Accepted: 06/08/2014] [Indexed: 10/25/2022]
Abstract
The presence of calcium, iron, and zinc bound to human milk secretory IgA (sIgA) was investigated. The sIgA components were first separated by two-dimensional polyacrylamide gel electrophoresis and then identified by electrospray ionization-tandem mass spectrometry (ESI MS MS). The metal ions were detected by flame atomic absorption spectrometry after acid mineralization of the spots. The results showed eight protein spots corresponding to the IgA heavy chain constant region. Another spot was identified as the transmembrane secretory component. Calcium was bound to both the transmembrane component and the heavy chain constant region, while zinc was bound to the heavy chain constant region and iron was not bound with the identified proteins. The association of a metal ion with a protein is important for a number of reasons, and therefore, the findings of the present study may lead to a better understanding of the mechanisms of action and of additional roles that sIgA and its components play in human milk.
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Affiliation(s)
| | - Camila Pereira Braga
- Institute of Biosciences, São Paulo State University-UNESP, Botucatu, SP, Brazil.
| | | | - Bruna Cavecci
- Institute of Biosciences, São Paulo State University-UNESP, Botucatu, SP, Brazil
| | | | | | | | - Fabio Cesar Gozzo
- Institute of Chemistry, University of Campinas-UNICAMP, Campinas, SP, Brazil
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