1
|
Tepebaşı MY, Savran M, Coşan S, Taştan ŞA, Aydın B. The protective role of selenium against high-fructose corn syrup-induced kidney damage: a histopathological and molecular analysis. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03149-w. [PMID: 38734838 DOI: 10.1007/s00210-024-03149-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
With the growth of the food industry, fructose, the intake of which increases with food, causes obesity and metabolic syndrome. Kidney damage may develop from metabolic syndrome. Selenium (Se) participates in the structure of antioxidant enzymes and has a medicinal effect. In this work, the protective impact of Se on kidney damage produced by high-fructose corn syrup (HFCS) via endoplasmic reticulum (ER) stress was examined. The study comprised four groups, each consisting of ten experimental animals: control, HFCS (20%-HFCS), HFCS (20%-HFCS), + Se (0.3 mg/kg/day/po), and Se (0.3 mg/kg/day/po) alone. The duration of the experiment was 6 weeks. Kidney tissues were stained with hematoxylin and eosin for histological examination. Immunohistochemical analysis was conducted to assess TNF-α and caspase-3 levels. The spectrophotometric evaluation was performed to measure TOS (total oxidant status), TAS (total antioxidant status), and OSI (oxidative stress index) levels. The PERK, ATF4, CHOP, BCL-2, and caspase-9 gene expression levels were assessed by the RT-qPCR method. After Se treatment, histopathological abnormalities and TNF-α and caspase-3 levels in the HFCS+Se group decreased (p < 0.001). While TOS and OSI levels increased dramatically in the HFCS group, TAS values decreased significantly but improved after Se application (p < 0.001). The expression levels of the genes PERK, ATF4, CHOP, and caspase-9 were significantly lower in the HFCS group when compared to the HFCS+Se group (p < 0.05). Our findings suggest that Se may protect against ER stress, oxidative stress, apoptosis, and kidney damage caused by high-dose fructose consumption.
Collapse
Affiliation(s)
| | - Mehtap Savran
- Department of Medical Pharmacology, University of Süleyman Demirel, Isparta, Turkey
| | - Samet Coşan
- Department of Medical Pharmacology, University of Süleyman Demirel, Isparta, Turkey
| | | | - Bünyamin Aydın
- Department of Internal Medicine, Kütahya University of Health Sciences, Kütahya, Turkey
| |
Collapse
|
2
|
Grman M, Balis P, Berenyiova A, Svajdlenkova H, Tomasova L, Cacanyiova S, Rostakova Z, Waczulikova I, Chovanec M, Domínguez-Álvarez E, Ondrias K, Misak A. Products of Selenite/Thiols Interaction Have Reducing Properties, Cleave Plasmid DNA and Decrease Rat Blood Pressure and Tension of Rat Mesenteric Artery. Biol Trace Elem Res 2024:10.1007/s12011-024-04196-3. [PMID: 38676879 DOI: 10.1007/s12011-024-04196-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 04/20/2024] [Indexed: 04/29/2024]
Abstract
Selenium compounds exert their antioxidant activity mostly when the selenium atom is incorporated into selenoproteins. In our work, we tested the possibility that selenite itself interacts with thiols to form active species that have reducing properties. Therefore, we studied the reduction of 2-(4-carboxyphenyl)-4,5-dihydro-4,4,5,5-tetramethyl-1H-imidazol-1-yloxy-3-oxide radical (•cPTIO), damage of plasmid DNA (pDNA), modulation of rat hemodynamic parameters and tension of isolated arteries induced by products of interaction of selenite with thiols. We found that the products of selenite interaction with thiols had significant reducing properties that could be attributed mainly to the selenide and that selenite had catalytic properties in the access of thiols. The potency of thiols to reduce •cPTIO in the interaction with selenite was cysteine > homocysteine > glutathione reduced > N-acetylcysteine. Thiol/selenite products cleaved pDNA, with superoxide dismutase enhancing these effects suggesting a positive involvement of superoxide anion in the process. The observed •cPTIO reduction and pDNA cleavage were significantly lower when selenomethionine was used instead of selenite. The products of glutathione/selenite interaction affected several hemodynamic parameters including rat blood pressure decrease. Notably, the products relaxed isolated mesenteric artery, which may explain the observed decrease in rat blood pressure. In conclusion, we found that the thiol/selenite interaction products exhibited significant reducing properties which can be used in further studies of the treatment of pathological conditions caused by oxidative stress. The results of decreased rat blood pressure and the tension of mesenteric artery may be perspective in studies focused on cardiovascular disease and their prevention.
Collapse
Affiliation(s)
- Marian Grman
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05, Bratislava, Slovak Republic
| | - Peter Balis
- Institute of Normal and Pathological Physiology, Centre of Experimental Medicine, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovak Republic
| | - Andrea Berenyiova
- Institute of Normal and Pathological Physiology, Centre of Experimental Medicine, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovak Republic
| | - Helena Svajdlenkova
- Polymer Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 845 41, Bratislava, Slovak Republic
- Department of Nuclear Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15, Bratislava, Slovak Republic
| | - Lenka Tomasova
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05, Bratislava, Slovak Republic
| | - Sona Cacanyiova
- Institute of Normal and Pathological Physiology, Centre of Experimental Medicine, Slovak Academy of Sciences, Sienkiewiczova 1, 813 71, Bratislava, Slovak Republic
| | - Zuzana Rostakova
- Institute of Measurement Science, Slovak Academy of Sciences, Dubravska Cesta 9, 841 04, Bratislava, Slovak Republic
| | - Iveta Waczulikova
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynska Dolina F1, 842 48, Bratislava, Slovak Republic
| | - Miroslav Chovanec
- Cancer Research Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05, Bratislava, Slovak Republic
| | | | - Karol Ondrias
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05, Bratislava, Slovak Republic
| | - Anton Misak
- Institute of Clinical and Translational Research, Biomedical Research Center, Slovak Academy of Sciences, Dubravska Cesta 9, 845 05, Bratislava, Slovak Republic.
| |
Collapse
|
3
|
Santelli CM, Sabuda MC, Rosenfeld CE. Time-Resolved Examination of Fungal Selenium Redox Transformations. ACS EARTH & SPACE CHEMISTRY 2023; 7:960-971. [PMID: 37228623 PMCID: PMC10204728 DOI: 10.1021/acsearthspacechem.2c00288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023]
Abstract
Selenium (Se) is both a micronutrient required for most life and an element of environmental concern due to its toxicity at high concentrations, and both bioavailability and toxicity are largely influenced by the Se oxidation state. Environmentally relevant fungi have been shown to aerobically reduce Se(IV) and Se(VI), the generally more toxic and bioavailable Se forms. The goal of this study was to shed light on fungal Se(IV) reduction pathways and biotransformation products over time and fungal growth stages. Two Ascomycete fungi were grown with moderate (0.1 mM) and high (0.5 mM) Se(IV) concentrations in batch culture over 1 month. Fungal growth was measured throughout the experiments, and aqueous and biomass-associated Se was quantified and speciated using analytical geochemistry, transmission electron microscopy (TEM), and synchrotron-based X-ray absorption spectroscopy (XAS) approaches. The results show that Se transformation products were largely Se(0) nanoparticles, with a smaller proportion of volatile, methylated Se compounds and Se-containing amino acids. Interestingly, the relative proportions of these products were consistent throughout all fungal growth stages, and the products appeared stable over time even as growth and Se(IV) concentration declined. This time-series experiment showing different biotransformation products throughout the different growth phases suggests that multiple mechanisms are responsible for Se detoxification, but some of these mechanisms might be independent of Se presence and serve other cellular functions. Knowing and predicting fungal Se transformation products has important implications for environmental and biological health as well as for biotechnology applications such as bioremediation, nanobiosensors, and chemotherapeutic agents.
Collapse
Affiliation(s)
- Cara M Santelli
- Department of Earth and Environmental Sciences, Minneapolis, Minnesota 55455, United States
- BioTechnology Institute, University of Minnesota, Saint Paul, Minnesota 55108, United States
| | - Mary C Sabuda
- Department of Earth and Environmental Sciences, Minneapolis, Minnesota 55455, United States
- BioTechnology Institute, University of Minnesota, Saint Paul, Minnesota 55108, United States
| | - Carla E Rosenfeld
- Section of Minerals and Earth Sciences, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania 15213, United States
| |
Collapse
|
4
|
Vinceti M, Filippini T, Jablonska E, Saito Y, Wise LA. Safety of selenium exposure and limitations of selenoprotein maximization: Molecular and epidemiologic perspectives. ENVIRONMENTAL RESEARCH 2022; 211:113092. [PMID: 35259406 DOI: 10.1016/j.envres.2022.113092] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 02/08/2023]
Abstract
Recent evidence from laboratory and epidemiologic studies has shed a different light on selenium health effects and its recommended range of environmental exposure, compared with earlier research. Specifically, epidemiologic studies in Western populations have shown adverse effects of selenium exposure at low levels, sometimes below or slightly above selenium intakes needed to maximize selenoprotein expression and activity. In addition, three recent lines of evidence in molecular and biochemical studies suggest some potential drawbacks associated with selenoprotein maximization: 1) the possibility that selenoprotein upregulation is a compensatory response to oxidative challenge, induced by selenium itself or other oxidants; 2) the capacity of selenoproteins to trigger tumor growth in some circumstances; and 3) the deleterious metabolic effects of selenoproteins and particularly of selenoprotein P. The last observation provides a toxicological basis to explain why in humans selenium intake levels as low as 60 μg/day, still in the range of selenium exposure upregulating selenoprotein expression, might start to increase risk of type 2 diabetes. Overall, these new pieces of evidence from the literature call into question the purported benefit of selenoprotein maximization, and indicate the need to reassess selenium dietary reference values and upper intake level. This reassessment should clarify which range of selenoprotein upregulation follows restoration of adequate selenium availability and which range is driven by a compensatory response to selenium toxicity and oxidative stress.
Collapse
Affiliation(s)
- Marco Vinceti
- CREAGEN Research Center of Environmental, Genetic and Nutritional Epidemiology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy; Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA.
| | - Tommaso Filippini
- CREAGEN Research Center of Environmental, Genetic and Nutritional Epidemiology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Ewa Jablonska
- Department of Translational Research, Nofer Institute of Occupational Medicine, Lodz, Poland
| | - Yoshiro Saito
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Lauren A Wise
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| |
Collapse
|
5
|
Chen Y, Stoll S, Sun H, Liu X, Liu W, Leng X. Stability and surface properties of selenium nanoparticles coated with chitosan and sodium carboxymethyl cellulose. Carbohydr Polym 2022; 278:118859. [PMID: 34973724 DOI: 10.1016/j.carbpol.2021.118859] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 10/10/2021] [Accepted: 11/03/2021] [Indexed: 01/18/2023]
Abstract
The effect of polysaccharide coatings on the stability and release characteristics of selenium nanoparticles (SeNPs) was evaluated by comparing the characteristics of chitosan-coated SeNPs (CS-SeNPs) and sodium carboxymethyl cellulose-coated SeNPs (CMC-SeNPs). The release characteristics of SeNPs were investigated in storage conditions, gastrointestinal conditions, and free radical systems. CMC-SeNPs formed dimers or trimers, whereas CS-SeNPs were monodispersed but formed large aggregates in a pH range of 7.4-8.25. Upon 50 days of storage at 30 °C, both CMC-SeNPs and CS-SeNPs were converted to Se4+. SeNPs exhibited a lower release rate in simulated gastrointestinal conditions than in free radical systems. SeNPs release in ABTS and superoxide anion free radical systems followed the first-order and Korsmeyer-Peppas models, respectively, indicating that SeNP release is mainly governed by dissolution mechanisms. Additional studies are needed to examine the potential environmental effects and biological activity of the Se4+ released from SeNPs.
Collapse
Affiliation(s)
- Yuying Chen
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, China Agricultural University, Beijing 100083, China.
| | - Serge Stoll
- Department F. A. Forel for Environmental and Aquatic Sciences, Section of Earth and Environmental Sciences and Institute for Environmental Sciences, University of Geneva, Carl-Vogt 66, CH-1211 Geneva, Switzerland.
| | - Hongbo Sun
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, China Agricultural University, Beijing 100083, China
| | - Xinnan Liu
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, China Agricultural University, Beijing 100083, China
| | - Wei Liu
- Department F. A. Forel for Environmental and Aquatic Sciences, Section of Earth and Environmental Sciences and Institute for Environmental Sciences, University of Geneva, Carl-Vogt 66, CH-1211 Geneva, Switzerland.
| | - Xiaojing Leng
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, China Agricultural University, Beijing 100083, China.
| |
Collapse
|
6
|
Grabarczyk M, Adamczyk M. New Strategies for the Simple and Sensitive Voltammetric Direct Quantification of Se(IV) in Environmental Waters Employing Bismuth Film Modified Glassy Carbon Electrode and Amberlite Resin. Molecules 2021; 26:4130. [PMID: 34299404 PMCID: PMC8306861 DOI: 10.3390/molecules26144130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/02/2021] [Accepted: 07/04/2021] [Indexed: 11/16/2022] Open
Abstract
An analytical procedure regarding the determination of selenium(IV) by anodic stripping voltammetry exploiting the in situ plated bismuth film electrode is described. Since organics are commonly present in untreated natural water samples, the use of Amberlite XAD-7 resin turns out to be quite important to avoid problems such as the adsorption of these compounds on the working electrode. The optimum circumstances for the detection of selenium in water using differential pulse voltammetry techniques were found to be as follows: 0.1 mol L-1 acetic acid, 1.9 × 10-5 mol L-1 Bi(III), 0.1 g Amberlite XAD-7 resin, and successive potentials of -1.6 V for 5 s and -0.4 V for 60 s, during which the in situ formation of the bismuth film on glassy carbon and the accumulation of selenium took place. The current of the anodic peak varies linearly with the selenium concentration ranging from 3 × 10-9 mol L-1 to 3 × 10-6 mol L-1 (r = 0.9995), with a detection limit of 8 × 10-10 mol L-1. The proposed procedure was used for Se(IV) determination in certified reference materials and natural water samples, and acceptable results and recoveries were obtained.
Collapse
Affiliation(s)
| | - Marzena Adamczyk
- Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, 20-031 Lublin, Poland;
| |
Collapse
|
7
|
Wang H, Guo Y, Pan H. Determination of selenium and copper in water and food by hierarchical dendritic nano-gold modified glassy carbon electrodes. Analyst 2021; 146:4384-4390. [PMID: 34132264 DOI: 10.1039/d1an00658d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The sensitive determination of selenium and copper is of importance for environmental monitoring and food safety. A stripping voltammetric determination of selenium and copper in water and selenium-rich foods was developed using hierarchical dendritic gold nanostructure (AuHD) modified glassy carbon electrodes (GCE). The AuHD thin films were electrodeposited potentiostatically onto the GCE from a solution containing 25 mM HAuCl4 and 0.1 M Na2SO4 at -0.6 V for 20 min. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) studies showed that the electrodeposited gold thin film shows a nanoforest-like morphology with a thickness of about 30-40 μm and a hierarchical dendritic structure with primary-, secondary-, and higher-order branches. Se(iv) and Cu(ii) in a 0.1 M H2SO4 solution were determined by square-wave anodic stripping voltammetry using the AuHDs/GCE as the working electrode. Prior to anodic stripping, Se(iv) and Cu(ii) were accumulated onto the working electrode surface at -0.2 V for 300 s. The stripping peak currents of Se(iv) at 0.81 V and Cu(ii) at 0.31 V were positively correlated with the concentrations of Se(iv) and Cu(ii) in a range of 50-700 nM. The limits of detection (3σ) for Se(iv) and Cu(ii) were 1.4 nM and 3.7 nM, respectively. The accuracy of the method was verified by analysing certified water standard reference materials, and the results showed that the method has good accuracy and high precision. The method was used to determine selenium and copper in tap water, selenium-rich rice and selenium-rich eggs. The results were compared with those obtained by using inductively coupled plasma-mass spectrometry (ICP-MS) and found to be consistent with those of ICP-MS. The proposed method had the advantages of simplicity, rapidity, good reproducibility, and high sensitivity and it can be used for the analysis of real samples.
Collapse
Affiliation(s)
- Haofan Wang
- College of Chemistry and Bioengineering, Guilin University of Technology, 12 Jiangan Road, Guilin 541004, P. R. China
| | | | | |
Collapse
|
8
|
Xie M, Sun X, Li P, Shen X, Fang Y. Selenium in cereals: Insight into species of the element from total amount. Compr Rev Food Sci Food Saf 2021; 20:2914-2940. [PMID: 33836112 DOI: 10.1111/1541-4337.12748] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/24/2021] [Accepted: 03/09/2021] [Indexed: 02/07/2023]
Abstract
Selenium (Se) is a trace mineral micronutrient essential for human health. The diet is the main source of Se intake. Se-deficiency is associated with many diseases, and up to 1 billion people suffer from Se-deficiency worldwide. Cereals are considered a good choice for Se intake due to their daily consumption as staple foods. Much attention has been paid to the contents of Se in cereals and other foods. Se-enriched cereals are produced by biofortification. Notably, the gap between the nutritional and toxic levels of Se is fairly narrow. The chemical structures of Se compounds, rather than their total contents, contribute to the bioavailability, bioactivity, and toxicity of Se. Organic Se species show better bioavailability, higher nutritional value, and less toxicity than inorganic species. In this paper, we reviewed the total content of Se in cereals, Se speciation methods, and the biological effects of Se species on human health. Selenomethionine (SeMet) is generally the most prevalent and important Se species in cereal grains. In conclusion, Se species should be considered in addition to the total Se content when evaluating the nutritional and toxic values of foods such as cereals.
Collapse
Affiliation(s)
- Minhao Xie
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, 210023, China
| | - Xinyang Sun
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, 210023, China.,Faculty of Agricultural and Food Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Peng Li
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, 210023, China
| | - Xinchun Shen
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, 210023, China
| | - Yong Fang
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, 210023, China
| |
Collapse
|
9
|
Selenium enriched Hypsizygus marmoreus, a potential food supplement with improved Se bioavailability. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110819] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
10
|
Kieliszek M, Dourou M. Effect of Selenium on the Growth and Lipid Accumulation of Yarrowia lipolytica Yeast. Biol Trace Elem Res 2021; 199:1611-1622. [PMID: 32632749 PMCID: PMC7886723 DOI: 10.1007/s12011-020-02266-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 06/21/2020] [Indexed: 12/13/2022]
Abstract
Nowadays, there is an increase attention on the effect of selenium (Se) on metabolic processes of microorganisms. Strains belonging to the genus of Yarrowia are of great biotechnological interest for various industries. In this study, we evaluated the effect of 10 mg/L of Se on the growth and lipid production of two Yarrowia lipolytica strains: the ACA DC 50109 and one more with increased oleagenicity, derived after ALE methodology (referred here as Y. lipolytica ALE_70). The presence of Se in the growth medium negatively affected both cell mass production and total lipid accumulation, for both Y. lipolytica strains. Fractionation of total lipids showed an inhibition on neutral lipid (NL) synthesis and consequently, an increase of polar lipids (glycolipids plus sphingolipids, and phospholipids) on the lipids of the Se-enriched ACA DC 50109 strain; however, the NL/polar ratio of the Se-enriched ALE_70 indicated that Se, apart from the inhibition of NL synthesis, provoked also the accumulation of polar lipids in this strain. In addition, the fatty acid (FA) composition was differently affected by Se. Se-enriched total lipids of the ALE_70 strain were enriched in linoleic acid (C18:2 n-6), which resulted in increase of the unsaturated index. On the other hand, Se-enriched lipids of the ACA DC 50109 strain were more saturated, as the percentage of palmitic (C16:0) and stearic (C18:0) acids increased in the total FAs. Moreover, it seems that Se influenced the activity or the expression of desaturases and elongase in both strains. Finally, the supplementation of growth medium with Se affected cell morphology, as well as the size and distribution of lipid droplets inside the yeast cells. According to our opinion, Se caused stress conditions and the consequence of that was the occurrence of metabolic disorders that affected cell mass, lipid content, and/or morphological structures. The results of the present study suggest that further research should be carried out to understand the background of the lipogenesis process in yeast cells cultured under stress conditions.
Collapse
Affiliation(s)
- Marek Kieliszek
- Department of Food Biotechnology and Microbiology, Institute of Food Sciences, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159 C, 02-776 Warsaw, Poland
| | - Marianna Dourou
- Unit of Microbiology, Division of Genetics, Cell and Developmental Biology, Department of Biology, University of Patras, 26504 Patras, Greece
| |
Collapse
|
11
|
Moya-Andérico L, Vukomanovic M, Cendra MDM, Segura-Feliu M, Gil V, Del Río JA, Torrents E. Utility of Galleria mellonella larvae for evaluating nanoparticle toxicology. CHEMOSPHERE 2021; 266:129235. [PMID: 33316472 DOI: 10.1016/j.chemosphere.2020.129235] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 05/27/2023]
Abstract
The use of nanoparticles in consumer products is currently on the rise, so it is important to have reliable methods to predict any associated toxicity effects. Traditional in vitro assays fail to mimic true physiological responses of living organisms against nanoparticles whereas murine in vivo models are costly and ethically controversial. For these reasons, this study aimed to evaluate the efficacy of Galleria mellonella as an alternative, non-rodent in vivo model for examining nanoparticle toxicity. Silver, selenium, and functionalized gold nanoparticles were synthesized, and their toxicity was assessed in G. mellonella larvae. The degree of acute toxicity effects caused by each type of NP was efficiently detected by an array of indicators within the larvae: LD50 calculation, hemocyte proliferation, NP distribution, behavioral changes, and histological alterations. G. mellonella larvae are proposed as a nanotoxicological model that can be used as a bridge between in vitro and in vivo murine assays in order to obtain better predictions of NP toxicity.
Collapse
Affiliation(s)
- Laura Moya-Andérico
- Bacterial Infections: Antimicrobial Therapies group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Marija Vukomanovic
- Advanced Materials Department, Jozef Stefan Institute, Ljubljana, Slovenia
| | - Maria Del Mar Cendra
- Bacterial Infections: Antimicrobial Therapies group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Miriam Segura-Feliu
- Molecular and Cellular Neurobiotechnology, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain; Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain; Institute of Neurosciences, Universitat de Barcelona, Barcelona, Spain
| | - Vanessa Gil
- Molecular and Cellular Neurobiotechnology, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain; Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain; Institute of Neurosciences, Universitat de Barcelona, Barcelona, Spain
| | - José A Del Río
- Molecular and Cellular Neurobiotechnology, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain; Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain; Institute of Neurosciences, Universitat de Barcelona, Barcelona, Spain
| | - Eduard Torrents
- Bacterial Infections: Antimicrobial Therapies group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain; Microbiology Section, Department of Genetics, Microbiology, and Statistics, Biology Faculty, Universitat de Barcelona, Barcelona, Spain.
| |
Collapse
|
12
|
Wang Q, Barnes LM, Maslakov KI, Howell CA, Illsley MJ, Dyer P, Savina IN. In situ synthesis of silver or selenium nanoparticles on cationized cellulose fabrics for antimicrobial application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 121:111859. [PMID: 33579491 DOI: 10.1016/j.msec.2020.111859] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/28/2020] [Accepted: 12/28/2020] [Indexed: 12/24/2022]
Abstract
In this study, we developed a method to prepare inorganic nanoparticles in situ on the surface of cationized cellulose using a rapid microwave-assisted synthesis. Selenium nanoparticles (SeNPs) were employed as a novel type of antimicrobial agent and, using the same method, silver nanoparticles (AgNPs) were also prepared. The results demonstrated that both SeNPs and AgNPs of about 100 nm in size were generated on the cationized cellulose fabrics. The antibacterial tests revealed that the presence of SeNPs clearly improved the antibacterial performance of cationized cellulose in a similar way as AgNPs. The functionalised fabrics demonstrated strong antibacterial activity when assessed using the challenge test method, even after repeated washing. Microscopic investigations revealed that the bacterial cells were visually damaged through contact with the functionalised fabrics. Furthermore, the functionalised fabrics showed low cytotoxicity towards human cells when tested in vitro using an indirect contact method. In conclusion, this study provides a new approach to prepare cationic cellulose fabrics functionalised with Se or Ag nanoparticles, which exhibit excellent antimicrobial performance, low cytotoxicity and good laundry durability. We have demonstrated that SeNPs can be a good alternative to AgNPs and the functionalised fabrics have great potential to serve as an anti-infective material.
Collapse
Affiliation(s)
- Qiaoyi Wang
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, United Kingdom
| | - Lara-Marie Barnes
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, United Kingdom
| | - Konstantin I Maslakov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, Moscow 119991, Russia
| | - Carol A Howell
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, United Kingdom; Enteromed Ltd., 85 Great Portland St, First floor, London, W1W 7LT, United Kingdom
| | - Matthew J Illsley
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, United Kingdom; Anamad Ltd., Sussex Innovation Centre, Science Park Square, Brighton, BN1 9SB, United Kingdom
| | - Patricia Dyer
- School of Art, University of Brighton, 58-67 Grand Parade, Brighton BN2 0JY, United Kingdom
| | - Irina N Savina
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton BN2 4GJ, United Kingdom.
| |
Collapse
|
13
|
Lu J, Qu L, Ma M, Li YF, Wang XG, Yang Z, Wang KH. Efficacy evaluation of selenium-enriched yeast in laying hens: effects on performance, egg quality, organ development, and selenium deposition. Poult Sci 2020; 99:6267-6277. [PMID: 33142545 PMCID: PMC7647803 DOI: 10.1016/j.psj.2020.07.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 06/28/2020] [Accepted: 07/18/2020] [Indexed: 12/21/2022] Open
Abstract
The aim of this study was to compare the dynamic changes of egg selenium (Se) deposition and deposition efficiency and to evaluate the efficacy of selenium-enriched yeast (SY) in laying hens over the 84 d feeding period after SY supplementation. A total of one thousand one hundred fifty-two 30-wk-old, Hy-Line Brown hens were randomly assigned to 1 of 6 groups (192 laying hens per group) with 6 replicates of 32 birds each, fed a basal diet (without Se supplementation), basal diet with 0.3 mg/kg of Se from sodium selenite (SS) or basal diets with 0.1, 0.2, 0.3, or 0.4 mg/kg of Se from SY, respectively. The results showed that the Se concentrations in the eggs and breasts from hens fed a SY-supplemented diet were significantly higher than those from hens fed a SS-supplemented diet or a basal diet (P < 0.001). There was a positive linear and quadratic correlation between Se concentrations in the eggs from hens fed a SY-supplemented diet and dietary Se supplementation on days 28, 56, and 84 (r2 = 0.931, 0.932, 0.976, P < 0.001; r2 = 0.946, 0.935, 0.976, P < 0.001), respectively. The Se deposition efficiency in whole eggs from hens fed a basal or SY-supplemented diet weresignificantly higher than those in eggs from hens fed a SS-supplemented diet on days 28, 56, and 84 (P < 0.001), respectively. In addition, there was a positive linear and quadratic correlation between Se concentrations in the eggs from hens fed SY-supplemented diet (r2 = 0.655, 0.779, 0.874, 0.781, P < 0.001; r2 = 0.666, 0.863, 0.944, 0.781, P < 0.001) or SS-supplemented diet (r2 = 0.363, P = 0.002; r2 = 0.440, P = 0.002) and number of feeding days. In conclusion, the organic Se from SY has higher bioavailability and deposition efficiency of Se in whole eggs as compared with inorganic Se from SS. The Se concentrations and Se deposition efficiency in the eggs increased from hens fed a SS- or SY-supplemented diet but decreased from hens fed a basal diet with the extension of the experimental duration. The results indicate that the dietary Se supplementation from SY should be limited to a maximum of 0.1 mg Se/kg complete feed when the eggs and meat produced from hens fed a SY-supplemented diet are used as food for humans directly, whereas up to 0.4 mg/kg organic Se from SY can be used to supplement the diets for laying hens when the products are used as raw materials for producing Se-enriched food.
Collapse
Affiliation(s)
- J Lu
- Poultry Institute, Chinese Academy of Agricultural Sciences, 225125 Yangzhou, Jiangsu, P. R. China; College of Animal Science and Technology, Nanjing Agricultural University, 210095 Nanjing, Jiangsu, P. R. China; Key Laboratory for Poultry Genetics and Breeding of Jiangsu Province, 225125 Yangzhou, Jiangsu, P. R. China
| | - L Qu
- Poultry Institute, Chinese Academy of Agricultural Sciences, 225125 Yangzhou, Jiangsu, P. R. China.
| | - M Ma
- Poultry Institute, Chinese Academy of Agricultural Sciences, 225125 Yangzhou, Jiangsu, P. R. China; Key Laboratory for Poultry Genetics and Breeding of Jiangsu Province, 225125 Yangzhou, Jiangsu, P. R. China
| | - Y F Li
- Poultry Institute, Chinese Academy of Agricultural Sciences, 225125 Yangzhou, Jiangsu, P. R. China; Key Laboratory for Poultry Genetics and Breeding of Jiangsu Province, 225125 Yangzhou, Jiangsu, P. R. China
| | - X G Wang
- Poultry Institute, Chinese Academy of Agricultural Sciences, 225125 Yangzhou, Jiangsu, P. R. China; Key Laboratory for Poultry Genetics and Breeding of Jiangsu Province, 225125 Yangzhou, Jiangsu, P. R. China
| | - Z Yang
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu Province, 225009, P. R. China
| | - K H Wang
- Poultry Institute, Chinese Academy of Agricultural Sciences, 225125 Yangzhou, Jiangsu, P. R. China.
| |
Collapse
|
14
|
Evans SO, Jacobson GM, Goodman HJB, Bird S, Jameson MB. Comparative Safety and Pharmacokinetic Evaluation of Three Oral Selenium Compounds in Cancer Patients. Biol Trace Elem Res 2019; 189:395-404. [PMID: 30187284 DOI: 10.1007/s12011-018-1501-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 08/30/2018] [Indexed: 02/07/2023]
Abstract
Selenium (Se) compounds have demonstrated anticancer properties in both preclinical and clinical studies, with particular promise in combination therapy where the optimal form and dose of selenium has yet to be established. In a phase I randomised double-blinded study, the safety, tolerability and pharmacokinetic (PK) profiles of sodium selenite (SS), Se-methylselenocysteine (MSC) and seleno-l-methionine (SLM) were compared in patients with chronic lymphocytic leukaemia and a cohort of patients with solid malignancies. Twenty-four patients received 400 μg of elemental Se as either SS, MSC or SLM for 8 weeks. None of the Se compounds were associated with any significant toxicities, and the total plasma Se AUC of SLM was markedly raised in comparison to MSC and SS. DNA damage assessment revealed negligible genotoxicity, and some minor reductions in lymphocyte counts were observed. At the dose level used, all three Se compounds are well-tolerated and non-genotoxic. Further analyses of the pharmacodynamic effects of Se on healthy and malignant peripheral blood mononuclear cells will inform the future evaluation of higher doses of these Se compounds. The study is registered under the Australian and New Zealand Clinical Trials Registry No: ACTRN12613000118707.
Collapse
Affiliation(s)
- Stephen O Evans
- Department of Biological Sciences, University of Waikato, Hamilton, New Zealand
- Waikato Clinical Campus, University of Auckland, Hamilton, New Zealand
| | - Gregory M Jacobson
- Department of Biological Sciences, University of Waikato, Hamilton, New Zealand
| | - Hugh J B Goodman
- Regional Cancer Centre, Waikato Hospital, Private Bag 3200, Hamilton, 3240, New Zealand
| | - Steve Bird
- Department of Biological Sciences, University of Waikato, Hamilton, New Zealand
| | - Michael B Jameson
- Waikato Clinical Campus, University of Auckland, Hamilton, New Zealand.
- Regional Cancer Centre, Waikato Hospital, Private Bag 3200, Hamilton, 3240, New Zealand.
| |
Collapse
|
15
|
Lu J, Qu L, Shen M, Wang X, Guo J, Hu Y, Dou T, Wang K. Effects of high-dose selenium-enriched yeast on laying performance, egg quality, clinical blood parameters, organ development, and selenium deposition in laying hens. Poult Sci 2019; 98:2522-2530. [DOI: 10.3382/ps/pey597] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 01/21/2019] [Indexed: 01/11/2023] Open
|
16
|
Abu-El-Zahab HSH, Hamza RZ, Montaser MM, El-Mahdi MM, Al-Harthi WA. Antioxidant, antiapoptotic, antigenotoxic, and hepatic ameliorative effects of L-carnitine and selenium on cadmium-induced hepatotoxicity and alterations in liver cell structure in male mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 173:419-428. [PMID: 30798185 DOI: 10.1016/j.ecoenv.2019.02.041] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 02/08/2019] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
L-carnitine (LC) and selenium (Se) have significant protective and antioxidant effects on several tissues. Cadmium (Cd), widely used in some industries and emitted from fossil fuels, is a heavy metal having a number of side effects, including hepatotoxicity. This study aims to assess the ameliorative function of both LC and SeCl4 on cadmium chloride (CdCl2)-induced liver toxicity. In total, 70 male mice included in this study were allocated to seven groups: control, CdCl2, LC, SeCl4, CdCl2 plus SeCl4, CdCl2 plus LC, CdCl2 plus SeCl4 and LC groups. Hepatic aminotransferase (aspartate aminotransferase [AST] and alanine transaminase [ALT]) activity and tumor necrosis factor-alpha [TNF-α] levels, as well as the antioxidant biomarkers (superoxide dismutase [SOD], glutathione reductase [GRx], glutathione-S-transferase [GST] and catalase [CAT], were examined. Histological and transmission electron microscopic [TEM] variations in the liver were used as indicators of liver damage after the administration of CdCl2-alone or CdCl2 with LC, SeCl4, or both. Genotoxic effects of CdCl2 were also evaluated and the possible roles of SeCl4 and/or LC on the expression of the antioxidant enzymes were studied. Results showed that administration of LC and SeCl4 decreased CdCl2-induced increase in ALT and AST levels and reduced oxidative stress to normal levels. In addition, LC combined with SeCl4 had a highly synergistic effect and elevated significantly the enzymatic antioxidants and decreased lipid peroxidation levels compared with those in the CdCl2-treated group. It is clear from the data that both LC and SeCl4 inhibit liver injury and improve the redox state in mice.
Collapse
Affiliation(s)
| | - Reham Z Hamza
- Zoology Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt; Biology Department, Faculty of Science, Taif University, Taif 888, Saudi Arabia.
| | - Metwally M Montaser
- Biotechnology Department, Faculty of Science, Taif University, Taif 888, Saudi Arabia; Zoology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - Magda M El-Mahdi
- Zoology Department, Faculty of Science, Cairo University, Cairo, Egypt; Biology Department, Faculty of Science, Taif University, Taif 888, Saudi Arabia
| | - Wed A Al-Harthi
- Biology Department, Faculty of Science, Taif University, Taif 888, Saudi Arabia
| |
Collapse
|
17
|
Sousa CA, Soares HMVM, Soares EV. Nickel Oxide Nanoparticles Trigger Caspase- and Mitochondria-Dependent Apoptosis in the Yeast Saccharomyces cerevisiae. Chem Res Toxicol 2019; 32:245-254. [PMID: 30656935 DOI: 10.1021/acs.chemrestox.8b00265] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The expansion of the industrial use of nickel oxide (NiO) nanoparticles (NPs) raises concerns about their potential adverse effects. Our work aimed to investigate the mechanisms of toxicity induced by NiO NPs, using the yeast Saccharomyces cerevisiae as a cell model. Yeast cells exposed to NiO NPs exhibited typical hallmarks of regulated cell death (RCD) by apoptosis [loss of cell proliferation capacity (cell viability), exposure of phosphatidylserine at the outer cytoplasmic membrane leaflet, nuclear chromatin condensation, and DNA damage] in a process that required de novo protein synthesis. The execution of yeast cell death induced by NiO NPs is Yca1p metacaspase-dependent. NiO NPs also induced a decrease in the mitochondrial membrane potential and an increase in the frequency of respiratory-deficient mutants, which supports the involvement of mitochondria in the cell death process. Cells deficient in the apoptosis-inducing factor ( aif1Δ) displayed higher tolerance to NiO NPs, which reinforces the involvement of mitochondria in RCD by apoptosis. In summary, this study shows that NiO NPs induce caspase- and mitochondria-dependent apoptosis in yeast. Our results warn about the possible harmful effects associated with the use of NiO NPs.
Collapse
Affiliation(s)
- Cátia A Sousa
- Bioengineering Laboratory-CIETI, Chemical Engineering Department , ISEP-School of Engineering of Polytechnic Institute of Porto , Rua Dr António Bernardino de Almeida, 431 , 4249-015 Porto , Portugal.,CEB-Centre of Biological Engineering , University of Minho, Campus de Gualtar , 4710-057 Braga , Portugal.,REQUIMTE/LAQV, Departamento de Engenharia Química, Faculdade de Engenharia , Universidade do Porto , rua Dr. Roberto Frias , 4200-465 Porto , Portugal
| | - Helena M V M Soares
- REQUIMTE/LAQV, Departamento de Engenharia Química, Faculdade de Engenharia , Universidade do Porto , rua Dr. Roberto Frias , 4200-465 Porto , Portugal
| | - Eduardo V Soares
- Bioengineering Laboratory-CIETI, Chemical Engineering Department , ISEP-School of Engineering of Polytechnic Institute of Porto , Rua Dr António Bernardino de Almeida, 431 , 4249-015 Porto , Portugal.,CEB-Centre of Biological Engineering , University of Minho, Campus de Gualtar , 4710-057 Braga , Portugal
| |
Collapse
|
18
|
Fernandes J, Hu X, Ryan Smith M, Go YM, Jones DP. Selenium at the redox interface of the genome, metabolome and exposome. Free Radic Biol Med 2018; 127:215-227. [PMID: 29883789 PMCID: PMC6168380 DOI: 10.1016/j.freeradbiomed.2018.06.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/19/2018] [Accepted: 06/02/2018] [Indexed: 02/06/2023]
Abstract
Selenium (Se) is a redox-active environmental mineral that is converted to only a small number of metabolites and required for a relatively small number of mammalian enzymes. Despite this, dietary and environmental Se has extensive impact on every layer of omics space. This highlights a need for global network response structures to provide reference for targeted, hypothesis-driven Se research. In this review, we survey the Se research literature from the perspective of the responsive physical and chemical barrier between an organism (functional genome) and its environment (exposome), which we have previously termed the redox interface. Recent advances in metabolomics allow molecular phenotyping of the integrated genome-metabolome-exposome structure. Use of metabolomics with transcriptomics to map functional network responses to supplemental Se in mice revealed complex network responses linked to dyslipidemia and weight gain. Central metabolic hubs in the network structure in liver were not directly linked to transcripts for selenoproteins but were, instead, linked to transcripts for glucose transport and fatty acid β-oxidation. The experimental results confirm the survey of research literature in showing that Se interacts with the functional genome through a complex network response structure. The results imply that systematic application of data-driven integrated omics methods to models with controlled Se exposure could disentangle health benefits and risks from Se exposures and also serve more broadly as an experimental paradigm for exposome research.
Collapse
Affiliation(s)
- Jolyn Fernandes
- Department of Medicine, Emory University, Atlanta, GA 30322, United States
| | - Xin Hu
- Department of Medicine, Emory University, Atlanta, GA 30322, United States
| | - M Ryan Smith
- Department of Medicine, Emory University, Atlanta, GA 30322, United States
| | - Young-Mi Go
- Department of Medicine, Emory University, Atlanta, GA 30322, United States.
| | - Dean P Jones
- Department of Medicine, Emory University, Atlanta, GA 30322, United States.
| |
Collapse
|
19
|
Lara HH, Guisbiers G, Mendoza J, Mimun LC, Vincent BA, Lopez-Ribot JL, Nash KL. Synergistic antifungal effect of chitosan-stabilized selenium nanoparticles synthesized by pulsed laser ablation in liquids against Candida albicans biofilms. Int J Nanomedicine 2018; 13:2697-2708. [PMID: 29760550 PMCID: PMC5937483 DOI: 10.2147/ijn.s151285] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Candida albicans is a major opportunistic fungal pathogen. One of the most important virulence factors that contribute to the pathogenesis of candidiasis is its ability to form biofilms. A key characteristic of Candida biofilms is their resistance to antifungal agents. Due to significant morbidity and mortality rates related to biofilm-associated drug resistance, there is an urgency to develop novel nanotechnology-based approaches preventing biofilm-related infections. METHODS In this study, we report, for the first time, the synthesis of selenium nanoparticles by irradiating selenium pellets by nanosecond pulsed laser ablation in liquid chitosan as a capping agent. Synergy of the fungicidal effect of selenium nanoparticles and chitosan was quantified by the combination index theorem of Chou-Talalay. RESULTS This drug combination resulted in a potent fungicidal effect against a preformed C. albicans biofilm in a dose-response manner. By advanced electron microscopy techniques, we documented the adhesive and permeabilizing properties of chitosan, therefore allowing selenium nanoparticles to enter as the cell wall of the yeast became disrupted and distorted. Most importantly, we demonstrated a potent quantitative synergistic effect when compounds such as selenium and chitosan are combined. CONCLUSION These chitosan-stabilized selenium nanoparticles could be used for ex vivo applications such as sterilizers for surfaces and biomedical devices.
Collapse
Affiliation(s)
- Humberto H Lara
- Department of Biology and South Texas Center for Emerging Infectious Diseases, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Gregory Guisbiers
- Department of Physics and Astronomy, University of Arkansas at Little Rock, Little Rock, AR, USA
| | - Jonathan Mendoza
- Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Lawrence C Mimun
- US Army Engineer Research & Development Center, Vicksburg, MS, USA
| | - Brandy A Vincent
- Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Jose L Lopez-Ribot
- Department of Biology and South Texas Center for Emerging Infectious Diseases, The University of Texas at San Antonio, San Antonio, TX, USA
| | - Kelly L Nash
- Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX, USA
| |
Collapse
|
20
|
Rahman MM, Uson-Lopez RA, Sikder MT, Tan G, Hosokawa T, Saito T, Kurasaki M. Ameliorative effects of selenium on arsenic-induced cytotoxicity in PC12 cells via modulating autophagy/apoptosis. CHEMOSPHERE 2018; 196:453-466. [PMID: 29324385 DOI: 10.1016/j.chemosphere.2017.12.149] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/21/2017] [Accepted: 12/22/2017] [Indexed: 06/07/2023]
Abstract
Arsenic is well known toxicant responsible for human diseases including cancers. On the other hand, selenium is an essential trace element with significant chemopreventive effects, anticancer potentials and antioxidant properties. Although previous studies have reported antagonism/synergism between arsenic and selenium in biological systems, the biomolecular mechanism/s is still inconclusive. Therefore, to elucidate the molecular phenomena in cellular level, we hypothesized that co-exposure of selenium with arsenic may have suppressive effects on arsenic-induced cytotoxicity. We found that selenium in co-exposure with arsenic increases cell viability, and suppresses oxidative stress induced by arsenic in PC12 cells. Consequently, DNA fragmentation due to arsenic exposure was also reduced by arsenic and selenium co-exposure. Furthermore, western blot analyses revealed that simultaneous exposure of both metals significantly inhibited autophagy which further suppressed apoptosis through positively regulation of key proteins; p-mTOR, p-Akt, p-Foxo1A, p62, and expression of ubiquitin, Bax, Bcl2, NFкB, and caspases 3 and 9, although those are negatively regulated by arsenic. In addition, reverse transcriptase PCR analysis confirmed the involvement of caspase cascade in cell death process induced by arsenic and subsequent inhibition by co-exposure of selenium with arsenic. The cellular accumulation study of arsenic in presence/absence of selenium via inductively coupled plasma mass spectrometry confirmed that selenium effectively retarded the uptake of arsenic in PC12 cells. Finally, these findings imply that selenium is capable to modulate arsenic-induced intrinsic apoptosis pathway via enhancement of mTOR/Akt autophagy signaling pathway through employing antioxidant potentials and through inhibiting the cellular accumulation of arsenic in PC12 cells.
Collapse
Affiliation(s)
- Md Mostafizur Rahman
- Graduate School of Environmental Science, Hokkaido University, Japan; Department of Environmental Sciences, Jahangirnagar University, Bangladesh
| | | | | | - Gongxun Tan
- Graduate School of Environmental Science, Hokkaido University, Japan
| | - Toshiyuki Hosokawa
- Institute for the Advancement of Higher Education, Hokkaido University, Japan
| | - Takeshi Saito
- Faculty of Health Sciences, Hokkaido University, Japan
| | - Masaaki Kurasaki
- Graduate School of Environmental Science, Hokkaido University, Japan; Faculty of Environmental Earth Science, Hokkaido University, Japan.
| |
Collapse
|
21
|
Resveratrol-Inspired Benzo[b]selenophenes Act as Anti-Oxidants in Yeast. Molecules 2018; 23:molecules23020507. [PMID: 29495287 PMCID: PMC6017489 DOI: 10.3390/molecules23020507] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/17/2018] [Accepted: 02/22/2018] [Indexed: 01/31/2023] Open
Abstract
Resveratrol is a natural (poly)phenol primarily found in plants protecting them against pathogens, as well as harmful effects of physical and chemical agents. In higher eukaryotic cells and organisms, this compound displays a remarkable range of biological activities, such as anti-oxidant, anti-inflammatory, anti-cancer, anti-aging, cardio- and neuro-protective properties. Here, biological activities of synthetic selenium-containing derivatives of resveratrol—benzo[b]selenophenes—have been studied in lower eukaryotes Saccharomyces cerevisiae. Their toxicity, as well as DNA damaging and reactive oxygen species (ROS) inducing potencies, manifested through their ability to act as redox active anti-microbial agents, have been examined. We show that some benzo[b]selenophenes can kill yeast cells and that the killing effects are not mediated by DNA damage types that can be detected as DNA double-strand breaks. These benzo[b]selenophenes could potentially be used as anti-fungal agents, although their concentrations relevant to application in humans need to be further evaluated. In addition, most of the studied benzo[b]selenophenes display redox-modulating/anti-oxidant activity (comparable or even higher than that of resveratrol or Trolox) causing a decrease in the intracellular ROS levels in yeast cells. Therefore, after careful re-evaluation in other biological systems these observations might be transferred to humans, where resveratrol-inspired benzo[b]selenophenes could be used as supra-anti-oxidant supplements.
Collapse
|
22
|
Lazard M, Dauplais M, Blanquet S, Plateau P. Recent advances in the mechanism of selenoamino acids toxicity in eukaryotic cells. Biomol Concepts 2018; 8:93-104. [PMID: 28574376 DOI: 10.1515/bmc-2017-0007] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 05/03/2017] [Indexed: 12/31/2022] Open
Abstract
Selenium is an essential trace element due to its incorporation into selenoproteins with important biological functions. However, at high doses it is toxic. Selenium toxicity is generally attributed to the induction of oxidative stress. However, it has become apparent that the mode of action of seleno-compounds varies, depending on its chemical form and speciation. Recent studies in various eukaryotic systems, in particular the model organism Saccharomyces cerevisiae, provide new insights on the cytotoxic mechanisms of selenomethionine and selenocysteine. This review first summarizes current knowledge on reactive oxygen species (ROS)-induced genotoxicity of inorganic selenium species. Then, we discuss recent advances on our understanding of the molecular mechanisms of selenocysteine and selenomethionine cytotoxicity. We present evidences indicating that both oxidative stress and ROS-independent mechanisms contribute to selenoamino acids cytotoxicity. These latter mechanisms include disruption of protein homeostasis by selenocysteine misincorporation in proteins and/or reaction of selenols with protein thiols.
Collapse
|
23
|
Contribution of the Yeast Saccharomyces cerevisiae Model to Understand the Mechanisms of Selenium Toxicity. MOLECULAR AND INTEGRATIVE TOXICOLOGY 2018. [DOI: 10.1007/978-3-319-95390-8_4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
24
|
Dominiak A, Wilkaniec A, Jęśko H, Czapski GA, Lenkiewicz AM, Kurek E, Wroczyński P, Adamczyk A. Selol, an organic selenium donor, prevents lipopolysaccharide-induced oxidative stress and inflammatory reaction in the rat brain. Neurochem Int 2017; 108:66-77. [DOI: 10.1016/j.neuint.2017.02.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 02/17/2017] [Accepted: 02/22/2017] [Indexed: 12/21/2022]
|
25
|
Abstract
The relation between selenium and cancer has been one of the most hotly debated topics in human health over the last decades. Early observational studies reported an inverse relation between selenium exposure and cancer risk. Subsequently, randomized controlled trials showed that selenium supplementation does not reduce the risk of cancer and may even increase it for some types, including advanced prostate cancer and skin cancer. An increased risk of diabetes has also been reported. These findings have been consistent in the most methodologically sound trials, suggesting that the early observational studies were misleading. Other studies have investigated selenium compounds as adjuvant therapy for cancer. Though there is currently insufficient evidence regarding the utility and safety of selenium compounds for such treatments, this issue is worthy of further investigation. The study of selenium and cancer is complicated by the existence of a diverse array of organic and inorganic selenium compounds, each with distinct biological properties, and this must be taken into consideration in the interpretation of both observational and experimental human studies.
Collapse
Affiliation(s)
- Marco Vinceti
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), University of Modena and Reggio Emilia, Modena, Italy; Boston University School of Public Health, Boston, MA, United States.
| | - Tommaso Filippini
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), University of Modena and Reggio Emilia, Modena, Italy
| | - Silvia Cilloni
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), University of Modena and Reggio Emilia, Modena, Italy
| | - Catherine M Crespi
- Jonsson Comprehensive Cancer Center, UCLA Fielding School of Public Health, University of California, Los Angeles, CA, United States
| |
Collapse
|
26
|
Vinceti M, Filippini T, Cilloni S, Bargellini A, Vergoni AV, Tsatsakis A, Ferrante M. Health risk assessment of environmental selenium: Emerging evidence and challenges (Review). Mol Med Rep 2017; 15:3323-3335. [PMID: 28339083 PMCID: PMC5428396 DOI: 10.3892/mmr.2017.6377] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 02/20/2017] [Indexed: 12/22/2022] Open
Abstract
New data have been accumulated in the scientific literature in recent years which allow a more adequate risk assessment of selenium with reference to human health. This new evidence comes from environmental studies, carried out in populations characterized by abnormally high or low selenium intakes, and from high-quality and large randomized controlled trials with selenium recently carried out in the US and in other countries. These trials have consistently shown no beneficial effect on cancer and cardiovascular risk, and have yielded indications of unexpected toxic effects of selenium exposure. Overall, these studies indicate that the minimal amount of environmental selenium which is source of risk to human health is much lower than anticipated on the basis of older studies, since toxic effects were shown at levels of intake as low as around 260 µg/day for organic selenium and around 16 µg/day for inorganic selenium. Conversely, populations with average selenium intake of less than 13–19 µg/day appear to be at risk of a severe cardiomyopathy, Keshan disease. Overall, there is the need to reconsider the selenium standards for dietary intake, drinking water, outdoor and indoor air levels, taking into account the recently discovered adverse health effects of low-dose selenium overexposure, and carefully assessing the significance of selenium-induced proteomic changes.
Collapse
Affiliation(s)
- Marco Vinceti
- CREAGEN, Research Center of Environmental, Genetic and Nutritional Epidemiology, Section of Public Health, University of Modena and Reggio Emilia, Modena, Italy
| | - Tommaso Filippini
- CREAGEN, Research Center of Environmental, Genetic and Nutritional Epidemiology, Section of Public Health, University of Modena and Reggio Emilia, Modena, Italy
| | - Silvia Cilloni
- CREAGEN, Research Center of Environmental, Genetic and Nutritional Epidemiology, Section of Public Health, University of Modena and Reggio Emilia, Modena, Italy
| | - Annalisa Bargellini
- CREAGEN, Research Center of Environmental, Genetic and Nutritional Epidemiology, Section of Public Health, University of Modena and Reggio Emilia, Modena, Italy
| | - Anna Valeria Vergoni
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Aristides Tsatsakis
- Department of Forensic Sciences and Toxicology, University of Crete, Heraklion, Crete, Greece
| | - Margherita Ferrante
- Department of Medical, Surgical Sciences and Advanced Technologies 'G.F. Ingrassia', University of Catania, Catania, Italy
| |
Collapse
|
27
|
Min M, Shen C, Fang L, Zhu B, Li J, Yao L, Jiang Y, Xiong C. Design of a selective regenerable cellulose microcolumn for selenium efficient recovery and economic determination. Chem Eng Res Des 2017. [DOI: 10.1016/j.cherd.2016.11.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
28
|
Affiliation(s)
- Joohyun Woo
- Department of Surgery, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| | - Woosung Lim
- Department of Surgery, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| |
Collapse
|
29
|
Brooks J, Lefebvre DD. Optimization of conditions for cadmium selenide quantum dot biosynthesis in Saccharomyces cerevisiae. Appl Microbiol Biotechnol 2016; 101:2735-2745. [DOI: 10.1007/s00253-016-8056-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 12/04/2016] [Accepted: 12/07/2016] [Indexed: 02/01/2023]
|
30
|
Gueroui M, Kechrid Z. Evaluation of Some Biochemical Parameters and Brain Oxidative Stress in Experimental Rats Exposed Chronically to Silver Nitrate and the Protective Role of Vitamin E and Selenium. Toxicol Res 2016; 32:301-309. [PMID: 27818732 PMCID: PMC5080859 DOI: 10.5487/tr.2016.32.4.301] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 08/14/2016] [Accepted: 08/18/2016] [Indexed: 01/14/2023] Open
Abstract
Due to undesirable hazardous interactions with biological systems, this investigation was undertaken to evaluate the effect of chronic exposure to silver on certain biochemical and some oxidative stress parameters with histopathological examination of brain, as well as the possible protective role of selenium and/or vitamin E as nutritional supplements. Thirty six male rats were divided into six groups of six each: the first group used as a control group. Group II given both vitamin E (400 mg/kg) of diet and selenium (Se) (1 mg/L) in their drinking water. Group III given silver as silver nitrate (AgNO3) (20 mg/L). Group IV given vitamin E and AgNO3. Group V given both AgNO3 and selenium. Group VI given AgNO3, vitamin E and Se. The animals were in the same exposure conditions for 3 months. According to the results which have been obtained; there was an increase in serum lactate dehydrogenase (LDH), lipase activities and cholesterol level, a decrease in serum total protein, calcium and alkaline phosphatase (ALP) activity in Ag-intoxicated rats. Moreover, the findings showed that Ag+ ions affected antioxidant defense system by decreasing superoxide dismutase (SOD) activity and increasing vitamin E concentration with a high level of malondialdehyde (MDA) in brain tissue. The histological examination also exhibited some nervous tissue alterations including hemorrhage and cytoplasm vacuolization. However, the co-administration of selenium and/or vitamin E ameliorated the biochemical parameters and restored the histological alterations. In conclusion, this study indicated that silver could cause harmful effects in animal body and these effects can be more toxic in high concentrations or prolonged time exposure to this metal. However, selenium and vitamin E act as powerful antioxidants which may exercise adverse effect against the toxicity of this metal.
Collapse
Affiliation(s)
- Mouna Gueroui
- Laboratory of Applied Biochemistry and Microbiology, Department of Biochemistry, Science faculty, Badji Mokhtar University, BP 12 Sidi Amar, Annaba, Algeria
| | - Zine Kechrid
- Laboratory of Applied Biochemistry and Microbiology, Department of Biochemistry, Science faculty, Badji Mokhtar University, BP 12 Sidi Amar, Annaba, Algeria
| |
Collapse
|
31
|
Yang SI, George GN, Lawrence JR, Kaminskyj SGW, Dynes JJ, Lai B, Pickering IJ. Multispecies Biofilms Transform Selenium Oxyanions into Elemental Selenium Particles: Studies Using Combined Synchrotron X-ray Fluorescence Imaging and Scanning Transmission X-ray Microscopy. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:10343-10350. [PMID: 26824614 DOI: 10.1021/acs.est.5b04529] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Selenium (Se) is an element of growing environmental concern, because low aqueous concentrations can lead to biomagnification through the aquatic food web. Biofilms, naturally occurring microbial consortia, play numerous important roles in the environment, especially in biogeochemical cycling of toxic elements in aquatic systems. The complexity of naturally forming multispecies biofilms presents challenges for characterization because conventional microscopic techniques require chemical and physical modifications of the sample. Here, multispecies biofilms biotransforming selenium oxyanions were characterized using X-ray fluorescence imaging (XFI) and scanning transmission X-ray microscopy (STXM). These complementary synchrotron techniques required minimal sample preparation and were applied correlatively to the same biofilm areas. Sub-micrometer XFI showed distributions of Se and endogenous metals, while Se K-edge X-ray absorption spectroscopy indicated the presence of elemental Se (Se0). Nanoscale carbon K-edge STXM revealed the distributions of microbial cells, extracellular polymeric substances (EPS), and lipids using the protein, saccharide, and lipid signatures, respectively, together with highly localized Se0 using the Se LIII edge. Transmission electron microscopy showed the electron-dense particle diameter to be 50-700 nm, suggesting Se0 nanoparticles. The intimate association of Se0 particles with protein and polysaccharide biofilm components has implications for the bioavailability of selenium in the environment.
Collapse
Affiliation(s)
| | | | - John R Lawrence
- National Hydrology Research Centre, Environment Canada , Saskatoon, Saskatchewan S7N 3H5, Canada
| | | | - James J Dynes
- Canadian Light Source , Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Barry Lai
- Advanced Photon Source, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | | |
Collapse
|
32
|
Bhattacharjee A, Basu A, Sen T, Biswas J, Bhattacharya S. Nano-Se as a novel candidate in the management of oxidative stress related disorders and cancer. THE NUCLEUS 2016. [DOI: 10.1007/s13237-016-0183-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
33
|
Dominiak A, Wilkaniec A, Wroczyński P, Jęśko H, Adamczyk A. Protective Effects of Selol Against Sodium Nitroprusside-Induced Cell Death and Oxidative Stress in PC12 Cells. Neurochem Res 2016; 41:3215-3226. [PMID: 27590497 PMCID: PMC5116319 DOI: 10.1007/s11064-016-2046-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 08/11/2016] [Accepted: 08/24/2016] [Indexed: 01/20/2023]
Abstract
Selol is an organic selenitetriglyceride formulation containing selenium at +4 oxidation level that can be effectively incorporated into catalytic sites of of Se-dependent antioxidants. In the present study, the potential antioxidative and cytoprotective effects of Selol against sodium nitroprusside (SNP)-evoked oxidative/nitrosative stress were investigated in PC12 cells and the underlying mechanisms analyzed. Spectrophoto- and spectrofluorimetic methods as well as fluorescence microscopy were used in this study; mRNA expression was quantified by real-time PCR. Selol dose-dependently improved the survival and decreased the percentage of apoptosis in PC12 cells exposed to SNP. To determine the mechanism of this protective action, the effect of Selol on free radical generation and on antioxidative potential was evaluated. Selol offered significant protection against the elevation of reactive oxidative species (ROS) evoked by SNP. Moreover, this compound restored glutathione homeostasis by ameliorating the SNP-evoked disturbance of GSH/GSSG ratio. The protective effect exerted by Selol was associated with the prevention of SNP-mediated down-regulation of antioxidative enzymes: glutathione peroxidase (Se-GPx), glutathione reductase (GR), and thioredoxin reductase (TrxR). Finally, GPx inhibition significantly abolished the cytoprotective effect of Selol. In conclusion, these results suggest that Selol effectively protected PC12 cells against SNP-induced oxidative damage and death by adjusting free radical levels and antioxidant system, and suppressing apoptosis. Selol could be successfully used in the treatments of diseases that involve oxidative stress and resulting apoptosis.
Collapse
Affiliation(s)
- Agnieszka Dominiak
- Department of Bioanalysis and Drug Analysis, Medical University of Warsaw, 1 Banacha St., 02-097, Warsaw, Poland
| | - Anna Wilkaniec
- Department of Cellular Signalling, Mossakowski Medical Research Centre Polish Academy of Sciences, 5 Pawińskiego St., 02-106, Warsaw, Poland
| | - Piotr Wroczyński
- Department of Bioanalysis and Drug Analysis, Medical University of Warsaw, 1 Banacha St., 02-097, Warsaw, Poland
| | - Henryk Jęśko
- Department of Cellular Signalling, Mossakowski Medical Research Centre Polish Academy of Sciences, 5 Pawińskiego St., 02-106, Warsaw, Poland
| | - Agata Adamczyk
- Department of Cellular Signalling, Mossakowski Medical Research Centre Polish Academy of Sciences, 5 Pawińskiego St., 02-106, Warsaw, Poland.
| |
Collapse
|
34
|
Kieliszek M, Błażejak S. Current Knowledge on the Importance of Selenium in Food for Living Organisms: A Review. Molecules 2016; 21:molecules21050609. [PMID: 27171069 PMCID: PMC6274134 DOI: 10.3390/molecules21050609] [Citation(s) in RCA: 248] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 05/02/2016] [Accepted: 05/05/2016] [Indexed: 12/21/2022] Open
Abstract
Selenium is one of the elements classified within the group of micronutrients which are necessary in trace amounts for the proper functioning of organisms. Selenium participates in the protection of cells against excess H2O2, in heavy metal detoxification, and regulation of the immune and reproductive systems as well. It also ensures the proper functioning of the thyroid gland. Selenium induces the occurrence of the selenoprotein synthesis process involved in the antioxidant defense mechanism of the organism. Recent years have brought much success in the studies on selenium. Anticarcinogenic properties of selenium against some cancers have been reported. Supplementation is increasingly becoming a solution to this problem. A large number of different supplementation methods are promoting studies in this area. Slight differences in the selenium content can result in excess or deficiency, therefore supplementation has to be done carefully and cautiously.
Collapse
Affiliation(s)
- Marek Kieliszek
- Faculty of Food Sciences, Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776 Warsaw, Poland.
| | - Stanisław Błażejak
- Faculty of Food Sciences, Department of Biotechnology, Microbiology and Food Evaluation, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776 Warsaw, Poland.
| |
Collapse
|
35
|
Ezoe K, Ohyama S, Hashem MA, Ohira SI, Toda K. Automated determinations of selenium in thermal power plant wastewater by sequential hydride generation and chemiluminescence detection. Talanta 2016; 148:609-16. [DOI: 10.1016/j.talanta.2015.06.085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 06/25/2015] [Accepted: 06/29/2015] [Indexed: 11/26/2022]
|
36
|
Ren G, Ali T, Chen W, Han D, Zhang L, Gu X, Zhang S, Ding L, Fanning S, Han B. The role of selenium in insulin-like growth factor I receptor (IGF-IR) expression and regulation of apoptosis in mouse osteoblasts. CHEMOSPHERE 2016; 144:2158-2164. [PMID: 26595309 DOI: 10.1016/j.chemosphere.2015.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 10/18/2015] [Accepted: 11/01/2015] [Indexed: 06/05/2023]
Abstract
Selenium (Se) is an essential component for animals and human beings. The chemoprotective role of Se, via the regulation of the cell cycle, stimulation of apoptosis and activation of some cytokines among others, is well known; however, the comprehensive effects of Se on the expression of IGF-IR and its regulation of apoptosis have not been investigated. Thus the aim of this study was to report on the effects that different concentrations of Se extert on body weight, blood serum IGF-IR levels and histopathology in mice; and on IGF-IR expression, proliferation and apoptosis in mouse osteoblasts. In vivo experiments showed a significant decrease in body weight, serum levels of IGF-IR and prominent toxicant effects on the liver, kidney, heart and spleen following the administration of defined concentrations of Se for 30 d. However, moderate levels (0.1 mg/kg) of Se gradually improved weight and serum IGF-IR. In vitro osteoblast experiments revealed that at concentrations of 5 × 10(-6) and 10(-5) mol/L Se, MTT activity decreased in comparison with control cells. Cell cycle, TEM and caspase-3 activity supported these observations including an increase in the sub-G1 phase and notable apoptosis in osteoblasts, along with a decrease in the expression of mRNA and protein levels of IGF-IR. Moreover, the MTT activity, mRNA and protein levels of IGF-IR in osteoblasts were decreased and caspase-3 activity was increased in siRNA groups as compared with non-siRNA groups. These data suggest that Se significantly affects IGF-IR expression, and that it contributes to the proliferation and regulation of apoptosis in osteoblasts.
Collapse
Affiliation(s)
- Gaixian Ren
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Tariq Ali
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Wei Chen
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Dandan Han
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Limei Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Xiaolong Gu
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Shiyao Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Laidi Ding
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Séamus Fanning
- UCD-Centre for Food Safety, School of Public Health, Physiotherapy & Sports Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Bo Han
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| |
Collapse
|
37
|
Kieliszek M, Błażejak S, Bzducha-Wróbel A, Kurcz A. Effects of Selenium on Morphological Changes in Candida utilis ATCC 9950 Yeast Cells. Biol Trace Elem Res 2016; 169:387-93. [PMID: 26166197 PMCID: PMC4717171 DOI: 10.1007/s12011-015-0415-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 06/15/2015] [Indexed: 01/27/2023]
Abstract
This paper presents the results of microscopic examinations of the yeast cells cultured in yeast extract-peptone-dextrose (YPD) media supplemented with sodium selenite(IV). The analysis of the morphological changes in yeast cells aimed to determine whether the selected selenium doses and culturing time may affect this element accumulation in yeast cell structures in a form of inorganic or organic compounds, as a result of detoxification processes. The range of characteristic morphological changes in yeasts cultivated in experimental media with sodium selenite(IV) was observed, including cell shrinkage and cytoplasm thickening of the changes within vacuole structure. The processes of vacuole disintegration were observed in aging yeast cells in culturing medium, which may indicate the presence of so-called ghost cells lacking intracellular organelles The changes occurring in the morphology of yeasts cultured in media supplemented with sodium selenite were typical for stationary phase of yeast growth. From detailed microscopic observations, larger surface area of the cell (6.03 μm(2)) and yeast vacuole (2.17 μm(2)) were noticed after 24-h culturing in the medium with selenium of 20 mg Se(4+)/L. The coefficient of shape of the yeast cells cultured in media enriched with sodium selenite as well as in the control YPD medium ranged from 1.02 to 1.22. Elongation of cultivation time (up to 48 and 72 h) in the media supplemented with sodium selenite caused a reduction in the surface area of the yeast cell and vacuole due to detoxification processes.
Collapse
Affiliation(s)
- Marek Kieliszek
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776, Warsaw, Poland.
| | - Stanisław Błażejak
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 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 159 C, 02-776, Warsaw, Poland
| | - Agnieszka Kurcz
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159 C, 02-776, Warsaw, Poland
| |
Collapse
|
38
|
Evaluation of sodium selenite effects on the potential probiotic Saccharomyces cerevisiae UFMG A-905: A physiological and proteomic analysis. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.06.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
39
|
Aspects of a Distinct Cytotoxicity of Selenium Salts and Organic Selenides in Living Cells with Possible Implications for Drug Design. Molecules 2015; 20:13894-912. [PMID: 26263963 PMCID: PMC6331825 DOI: 10.3390/molecules200813894] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 07/14/2015] [Accepted: 07/22/2015] [Indexed: 12/20/2022] Open
Abstract
Selenium is traditionally considered as an antioxidant element and selenium compounds are often discussed in the context of chemoprevention and therapy. Recent studies, however, have revealed a rather more colorful and diverse biological action of selenium-based compounds, including the modulation of the intracellular redox homeostasis and an often selective interference with regulatory cellular pathways. Our basic activity and mode of action studies with simple selenium and tellurium salts in different strains of Staphylococcus aureus (MRSA) and Saccharomyces cerevisiae indicate that such compounds are sometimes not particularly toxic on their own, yet enhance the antibacterial potential of known antibiotics, possibly via the bioreductive formation of insoluble elemental deposits. Whilst the selenium and tellurium compounds tested do not necessarily act via the generation of Reactive Oxygen Species (ROS), they seem to interfere with various cellular pathways, including a possible inhibition of the proteasome and hindrance of DNA repair. Here, organic selenides are considerably more active compared to simple salts. The interference of selenium (and tellurium) compounds with multiple targets could provide new avenues for the development of effective antibiotic and anticancer agents which may go well beyond the traditional notion of selenium as a simple antioxidant.
Collapse
|
40
|
Tung YC, Tsai ML, Kuo FL, Lai CS, Badmaev V, Ho CT, Pan MH. Se-Methyl-L-selenocysteine Induces Apoptosis via Endoplasmic Reticulum Stress and the Death Receptor Pathway in Human Colon Adenocarcinoma COLO 205 Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5008-16. [PMID: 25943382 DOI: 10.1021/acs.jafc.5b01779] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Selenomethionine (SeMet) and Se-methyl-L-selenocysteine (MSeC) are natural organoselenium compounds found in garlic, onion, and broccoli. In addition, these compounds have lower toxicity and better anticancer activities than inorganic Se. This study investigated the effects of MSeC treatment on the growth of COLO 205 human colorectal adenocarcinoma cells and evaluated the mechanisms related to the MSeC-induced effects. When COLO 205 cells were treated with 200 μM MSeC for 24 h, MSeC caused 80% apoptosis in cells. MSeC increased the expression of Fas and FasL, followed by the cleavage of caspase-3, caspase-8, DNA fragmentation factor (DFF45), and poly(ADP-ribose) polymerase (PARP). MSeC also increased the levels of Bax protein and decreased the levels of Bid and Bcl-2 proteins. However, MSeC did not cause apoptosis through reactive oxygen species (ROS) stress but instead through endoplasmic reticulum (ER) stress. The cleavage of caspase-12 and caspase-9 was shown to increase the growth arrest and protein levels of DNA-damage inducible genes (GADD) 153 and 45. MSeC also downregulated the ERK1/2 and PI3K/AKT protein levels and upregulated the p38 and JNK protein levels in COLO 205 cells. These results showed that the mechanism by which MSeC induced apoptosis in COLO 205 cells involved caspase activation, the extrinsic apoptotic pathway, and the regulation of ER-stress-induced apoptosis.
Collapse
Affiliation(s)
- Yen-Chen Tung
- †Department of Food Science, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
| | - Mei-Ling Tsai
- ‡Department of Seafood Science, National Kaohsiung Marine University, Kaohsiung 811, Taiwan
| | - Fang-Ling Kuo
- ‡Department of Seafood Science, National Kaohsiung Marine University, Kaohsiung 811, Taiwan
| | - Ching-Shu Lai
- §Institute of Food Sciences and Technology, National Taiwan University, Taipei 106, Taiwan
| | - Vladimir Badmaev
- ∥American Medical Holdings Incorporated, 1440 Forest Hill Road, New York, New York 10314, United States
| | - Chi-Tang Ho
- †Department of Food Science, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08901, United States
| | - Min-Hsiung Pan
- §Institute of Food Sciences and Technology, National Taiwan University, Taipei 106, Taiwan
- ⊥Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- #Department of Health and Nutrition Biotechnology, Asia University, Taichung 413, Taiwan
| |
Collapse
|
41
|
Herrero E, Wellinger RE. Yeast as a model system to study metabolic impact of selenium compounds. MICROBIAL CELL 2015; 2:139-149. [PMID: 28357286 PMCID: PMC5349236 DOI: 10.15698/mic2015.05.200] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Inorganic Se forms such as selenate or selenite (the two more abundant forms in nature) can be toxic in Saccharomyces cerevisiae cells, which constitute an adequate model to study such toxicity at the molecular level and the functions participating in protection against Se compounds. Those Se forms enter the yeast cell through other oxyanion transporters. Once inside the cell, inorganic Se forms may be converted into selenide through a reductive pathway that in physiological conditions involves reduced glutathione with its consequent oxidation into diglutathione and alteration of the cellular redox buffering capacity. Selenide can subsequently be converted by molecular oxygen into elemental Se, with production of superoxide anions and other reactive oxygen species. Overall, these events result in DNA damage and dose-dependent reversible or irreversible protein oxidation, although additional oxidation of other cellular macromolecules cannot be discarded. Stress-adaptation pathways are essential for efficient Se detoxification, while activation of DNA damage checkpoint and repair pathways protects against Se-mediated genotoxicity. We propose that yeast may be used to improve our knowledge on the impact of Se on metal homeostasis, the identification of Se-targets at the DNA and protein levels, and to gain more insights into the mechanism of Se-mediated apoptosis.
Collapse
Affiliation(s)
- Enrique Herrero
- Departament de Ciències Mèdiques Bàsiques, Universitat de Lleida, IRBLleida, Rovira Roure 80, 25198 Lleida, Spain
| | - Ralf E Wellinger
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Universidad de Sevilla, 41092 Sevilla, Spain
| |
Collapse
|
42
|
Lazard M, Dauplais M, Blanquet S, Plateau P. Trans-sulfuration Pathway Seleno-amino Acids Are Mediators of Selenomethionine Toxicity in Saccharomyces cerevisiae. J Biol Chem 2015; 290:10741-50. [PMID: 25745108 DOI: 10.1074/jbc.m115.640375] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Indexed: 12/29/2022] Open
Abstract
Toxicity of selenomethionine, an organic derivative of selenium widely used as supplement in human diets, was studied in the model organism Saccharomyces cerevisiae. Several DNA repair-deficient strains hypersensitive to selenide displayed wild-type growth rate properties in the presence of selenomethionine indicating that selenide and selenomethionine exert their toxicity via distinct mechanisms. Cytotoxicity of selenomethionine decreased when the extracellular concentration of methionine or S-adenosylmethionine was increased. This protection resulted from competition between the S- and Se-compounds along the downstream metabolic pathways inside the cell. By comparing the sensitivity to selenomethionine of mutants impaired in the sulfur amino acid pathway, we excluded a toxic effect of Se-adenosylmethionine, Se-adenosylhomocysteine, or of any compound in the methionine salvage pathway. Instead, we found that selenomethionine toxicity is mediated by the trans-sulfuration pathway amino acids selenohomocysteine and/or selenocysteine. Involvement of superoxide radicals in selenomethionine toxicity in vivo is suggested by the hypersensitivity of a Δsod1 mutant strain, increased resistance afforded by the superoxide scavenger manganese, and inactivation of aconitase. In parallel, we showed that, in vitro, the complete oxidation of the selenol function of selenocysteine or selenohomocysteine by dioxygen is achieved within a few minutes at neutral pH and produces superoxide radicals. These results establish a link between superoxide production and trans-sulfuration pathway seleno-amino acids and emphasize the importance of the selenol function in the mechanism of organic selenium toxicity.
Collapse
Affiliation(s)
- Myriam Lazard
- From the Ecole Polytechnique, Laboratoire de Biochimie, CNRS, 91128 Palaiseau Cedex, France
| | - Marc Dauplais
- From the Ecole Polytechnique, Laboratoire de Biochimie, CNRS, 91128 Palaiseau Cedex, France
| | - Sylvain Blanquet
- From the Ecole Polytechnique, Laboratoire de Biochimie, CNRS, 91128 Palaiseau Cedex, France
| | - Pierre Plateau
- From the Ecole Polytechnique, Laboratoire de Biochimie, CNRS, 91128 Palaiseau Cedex, France
| |
Collapse
|
43
|
Yakubov E, Buchfelder M, Eyüpoglu IY, Savaskan NE. Selenium action in neuro-oncology. Biol Trace Elem Res 2014; 161:246-54. [PMID: 25164034 DOI: 10.1007/s12011-014-0111-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 08/18/2014] [Indexed: 12/31/2022]
Abstract
The trace element selenium and selenocysteine-carrying selenoproteins play a pivotal role in the brain. Beside the essential function during development and maintenance of brain action, selenium has also been associated with several neurological and neuro-oncological conditions. Reliable supply of selenium is important since selenium compounds can affect tumor microenvironment and neoangiogenesis in malignant gliomas (WHO grade III and IV [glioblastoma, GBM]) via induction of apoptosis and alteration of matrix metalloproteinases expression. Here, we summarize recent findings focusing on the anti-toxicity and cancer-preventive properties of selenium and their implication in current multimodal therapies including temozolomide (Temodal), cyclophosphamide (Endoxan), and cisplatin (DDP, Platiblastin, and Platinol). We shed light on unintended side effects in chemotherapy and the developments of novel combinatorial chemotherapeutics with selenium compounds. We found that selenium and selenium compounds have dual action profiles with direct anti-cancer and chemotherapy-intensifier effects as well as neuroprotective and cytoprotective agents. Current selenium trials and selenium supplementation with focus on neuro-oncology will be discussed with regard to low-adequate-to-high/toxic selenium status.
Collapse
Affiliation(s)
- Eduard Yakubov
- Department of Neurosurgery, Universitätsklinikum Erlangen, FAU-Friedrich-Alexander Universität Erlangen-Nürnberg, Schwabachanlage 6, 91054, Erlangen, Germany
| | | | | | | |
Collapse
|
44
|
Yang H, Jia X. Safety evaluation of Se-methylselenocysteine as nutritional selenium supplement: Acute toxicity, genotoxicity and subchronic toxicity. Regul Toxicol Pharmacol 2014; 70:720-7. [DOI: 10.1016/j.yrtph.2014.10.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 09/16/2014] [Accepted: 10/25/2014] [Indexed: 12/24/2022]
|
45
|
Pérez-Sampietro M, Herrero E. The PacC-family protein Rim101 prevents selenite toxicity in Saccharomyces cerevisiae by controlling vacuolar acidification. Fungal Genet Biol 2014; 71:76-85. [PMID: 25239548 DOI: 10.1016/j.fgb.2014.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/02/2014] [Accepted: 09/06/2014] [Indexed: 01/10/2023]
Abstract
Saccharomyces cerevisiae Rim101 is a member of the fungal PacC family of transcription factors involved in the response to alkaline pH stress. Further studies have also implicated Rim101 in the responses to other stresses, and have shown its genetic interaction with the iron deprivation-responsive factor Aft1. The present study shows that the absence of Rim101 leads to hypersensitivity to oxidants such as t-butyl hydroperoxide and diamide, and also to the prooxidant agent selenite. The protective role of Rim101 against selenite requires the sensing complex component Rim8, the ESCRT-I/II/III complexes and the Rim13 protease involved in proteolytic activation of Rim101. The Nrg1 transcriptional repressor is a downstream effector of Rim101 in this response to selenite, as occurs in the responses to alkaline pH, Na(+) and Li(+) stresses. Deletion of RIM101 causes downregulation of the vacuolar ATPase genes VMA2 and VMA4, which becomes accentuated compared to wild type cells upon selenite stress, and activation of the Rim101 protein prevents inhibition of vacuolar acidification caused by selenite. These observations therefore support a role of Rim101 in modulation of vacuolar acidity necessary for selenite detoxification. In addition, a parallel Rim101-independent pathway requiring the complete ESCRT machinery (including the ESCRT-0 complex) also participates in protection against selenite.
Collapse
Affiliation(s)
- Maria Pérez-Sampietro
- Departament de Ciències Mèdiques Bàsiques, Universitat de Lleida, IRBLleida, Edifici Biomedicina I, Rovira Roure 198, 25198-Lleida, Spain
| | - Enrique Herrero
- Departament de Ciències Mèdiques Bàsiques, Universitat de Lleida, IRBLleida, Edifici Biomedicina I, Rovira Roure 198, 25198-Lleida, Spain.
| |
Collapse
|
46
|
Intracellular diagnostics: hunting for the mode of action of redox-modulating selenium compounds in selected model systems. Molecules 2014; 19:12258-79. [PMID: 25123189 PMCID: PMC6271387 DOI: 10.3390/molecules190812258] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 07/22/2014] [Accepted: 07/24/2014] [Indexed: 01/26/2023] Open
Abstract
Redox-modulating compounds derived from natural sources, such as redox active secondary metabolites, are currently of considerable interest in the field of chemoprevention, drug and phytoprotectant development. Unfortunately, the exact and occasionally even selective activity of such products, and the underlying (bio-)chemical causes thereof, are often only poorly understood. A combination of the nematode- and yeast-based assays provides a powerful platform to investigate a possible biological activity of a new compound and also to explore the “redox link” which may exist between its activity on the one side and its chemistry on the other. Here, we will demonstrate the usefulness of this platform for screening several selenium and tellurium compounds for their activity and action. We will also show how the nematode-based assay can be used to obtain information on compound uptake and distribution inside a multicellular organism, whilst the yeast-based system can be employed to explore possible intracellular mechanisms via chemogenetic screening and intracellular diagnostics. Whilst none of these simple and easy-to-use assays can ultimately substitute for in-depth studies in human cells and animals, these methods nonetheless provide a first glimpse on the possible biological activities of new compounds and offer direction for more complicated future investigations. They may also uncover some rather unpleasant biochemical actions of certain compounds, such as the ability of the trace element supplement selenite to induce DNA strand breaks.
Collapse
|
47
|
Sun HJ, Rathinasabapathi B, Wu B, Luo J, Pu LP, Ma LQ. Arsenic and selenium toxicity and their interactive effects in humans. ENVIRONMENT INTERNATIONAL 2014; 69:148-58. [PMID: 24853282 DOI: 10.1016/j.envint.2014.04.019] [Citation(s) in RCA: 232] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 04/29/2014] [Accepted: 04/29/2014] [Indexed: 05/15/2023]
Abstract
Arsenic (As) and selenium (Se) are unusual metalloids as they both induce and cure cancer. They both cause carcinogenesis, pathology, cytotoxicity, and genotoxicity in humans, with reactive oxygen species playing an important role. While As induces adverse effects by decreasing DNA methylation and affecting protein 53 expression, Se induces adverse effects by modifying thioredoxin reductase. However, they can react with glutathione and S-adenosylmethionine by forming an As-Se complex, which can be secreted extracellularly. We hypothesize that there are two types of interactions between As and Se. At low concentration, Se can decrease As toxicity via excretion of As-Se compound [(GS3)2AsSe](-), but at high concentration, excessive Se can enhance As toxicity by reacting with S-adenosylmethionine and glutathione, and modifying the structure and activity of arsenite methyltransferase. This review is to summarize their toxicity mechanisms and the interaction between As and Se toxicity, and to provide suggestions for future investigations.
Collapse
Affiliation(s)
- Hong-Jie Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China
| | - Bala Rathinasabapathi
- Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, United States
| | - Bing Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China
| | - Li-Ping Pu
- Suzhou Health College, Suzhou, Jiangsu 215000, China
| | - Lena Q Ma
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210046, China; Soil and Water Science Department, University of Florida, Gainesville, FL 32611, USA.
| |
Collapse
|
48
|
Wrobel JK, Seelbach MJ, Chen L, Power RF, Toborek M. Supplementation with Selenium-Enriched Yeast Attenuates Brain Metastatic Growth. Nutr Cancer 2013; 65:563-70. [DOI: 10.1080/01635581.2013.775315] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
49
|
Kieliszek M, Błażejak S. Selenium: Significance, and outlook for supplementation. Nutrition 2013; 29:713-8. [DOI: 10.1016/j.nut.2012.11.012] [Citation(s) in RCA: 225] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2012] [Revised: 11/16/2012] [Accepted: 11/23/2012] [Indexed: 11/16/2022]
|
50
|
Microwave-assisted synthesis of new selenazole derivatives with antiproliferative activity. Molecules 2013; 18:4679-88. [PMID: 23603950 PMCID: PMC6269919 DOI: 10.3390/molecules18044679] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 04/12/2013] [Accepted: 04/17/2013] [Indexed: 11/17/2022] Open
Abstract
New aryl-hydrazinyl-1,3-selenazole and aroyl-hydrazonyl-1,3-selenazoles were synthesized via Hantzsch type condensation reactions of selenosemicarbazides with α-halogenocarbonyl derivatives, under classical versus microwave heating conditions. Excellent yields and shorter reaction times were obtained under irradiation conditions. The structures of the synthesized compounds were assigned based on spectroscopic data (FT-IR, 1H-NMR), MS and elemental analysis. Selenazole derivatives were screened for their anti-proliferative effects against two leukemia cell lines (CCRF-CEM and HL60) and three carcinoma cell lines (MDA-MB231, HCT116 and U87MG).
Collapse
|