1
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Yadav M, Singh VP. Glutathione Peroxidase-like Antioxidant Activity of 1,3-Benzoselenazoles: Synthesis and In Silico Molecular Docking Studies as Pancreatic Lipase Inhibitors. J Org Chem 2023; 88:16934-16948. [PMID: 38008916 DOI: 10.1021/acs.joc.3c01762] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
The synthesis of 1,3-benzoselenazoles was achieved by the reaction of corresponding bis[3-amino-N-(p-tolyl)benzamide-2-yl] diselenide, bis[3-amino-N-(4-methoxyphenyl)benzamide-2-yl] diselenide, and bis[3-amino-N-(4-(dimethylamino)phenyl) benzamide-2-yl] diselenide with aryl aldehydes. The 1,3-benzoselenazoles continued to exist as planar molecules due to the presence of secondary Se···O interactions as revealed by the single-crystal X-ray analysis. The presence of secondary Se···O interactions in 1,3-benzoselenazoles was confirmed using natural bond orbital (NBO) and atoms in molecules (AIM) calculations. Nucleus-independent chemical shift (NICS) values suggested the presence of aromatic character in a five-membered benzoselenazole heterocyclic ring. The glutathione peroxidase (GPx)-like antioxidant activity of all 1,3-benzoselenazoles was assessed using a thiophenol assay, exhibiting greater antioxidant activity than Ph2Se2 used as a reference. The most active catalyst carrying a strong electron-donating group (-NMe2) at the ortho-position to the benzoselenazole ring was further investigated at different concentrations of thiophenol, H2O2, and 1,3-benzoselenazoles as catalyst for determining their catalytic parameters. Moreover, the potential applications of all 1,3-benzoselenazoles against pancreatic lipase (PL) have been identified using in silico interactions between the active sites of the 1LPB protein as evaluated using a molecular docking study.
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Affiliation(s)
- Manisha Yadav
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Vijay P Singh
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
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2
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Hassan A, Iqbal MA, Bhatti HN, Shahid M. N-heterocyclic carbene based Bi-nuclear organoselenium compounds impart a mild biocidal potential compared to their ligands: Synthesis, characterization, computational studies. Comput Biol Chem 2023; 107:107963. [PMID: 37776812 DOI: 10.1016/j.compbiolchem.2023.107963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/18/2023] [Accepted: 09/21/2023] [Indexed: 10/02/2023]
Abstract
N-heterocyclic carbene (NHC) based compounds are remarkably known for astonishing biological potentials. Coordination of metal center with these compounds can substantially improve the biological potential for better efficacy. In this context, three binuclear azolium salts (L1-L3) and subsequent selenium adducts L1Se-L3Se were synthesized and assured through analytical techniques. Synthesized compounds were also simulated through computational approach and results were compared with experimental observations that also relatable with biological potentials. Synthesized compounds were screened against bacterial strains and interestingly, the studied compounds showed good antimicrobial potential with MIC values of 7.01, 10.7 and 10.5 µM for S. Aureus (gram positive bacteria) while 12.5, 11.75 and 14.5 µM against E. Coli (gram negative bacteria). The studied compounds showed good antioxidant activity to scavenge DPPH free radicals among which azolium salts were found better in antioxidant potential (IC50 5.75-6.55 µg/mL) than their respective selenium compounds (IC50 9.50-12.75 µg/mL). The hemolytic assay against red blood cells showed that ligands are least toxic comparative to their Se-adducts and can be further trialed for In Vivo studies.
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Affiliation(s)
- Ahmad Hassan
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan; Organometallic and Coordination Chemistry Laboratory, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Muhammad Adnan Iqbal
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan; Organometallic and Coordination Chemistry Laboratory, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan.
| | - Haq Nawaz Bhatti
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Muhammad Shahid
- Department of Biochemistry, University of Agriculture Faisalabad, Faisalabad, Pakistan
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3
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Alhasan R, Martins GM, de Castro PP, Saleem RSZ, Zaiter A, Fries-Raeth I, Kleinclauss A, Perrin-Sarrado C, Chaimbault P, da Silva Júnior EN, Gaucher C, Jacob C. Selenoneine-inspired selenohydantoins with glutathione peroxidase-like activity. Bioorg Med Chem 2023; 94:117479. [PMID: 37769443 DOI: 10.1016/j.bmc.2023.117479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/27/2023] [Accepted: 09/17/2023] [Indexed: 09/30/2023]
Abstract
Chronic diseases such as cystic fibrosis, inflammatory bowel diseases, rheumatoid arthritis, and cardiovascular illness have been linked to a decrease in selenium levels and an increase in oxidative stress. Selenium is an essential trace element that exhibits antioxidant properties, with selenocysteine enzymes like glutathione peroxidase being particularly effective at reducing peroxides. In this study, a series of synthetic organoselenium compounds were synthesized and evaluated for their potential antioxidant activities. The new selenohydantoin molecules were inspired by selenoneine and synthesized using straightforward methods. Their antioxidant potential was evaluated and proven using classical radical scavenging and metal-reducing methods. The selenohydantoin derivatives exhibited glutathione peroxidase-like activity, reducing hydroperoxides. Theoretical calculations using Density Functional Theory (DFT) revealed the selenone isomer to be the only one occurring in solution, with selenolate as a possible tautomeric form in the presence of a basic species. Cytocompatibility assays indicated that the selenohydantoin derivatives were non-toxic to primary human aortic smooth muscle cells, paving the way for further biological evaluations of their antioxidant activity. The results suggest that selenohydantoin derivatives with trifluoro-methyl (-CF3) and chlorine (-Cl) substituents have significant activities and could be potential candidates for further biological trials. These compounds may contribute to the development of effective therapies for chronic diseases such cardiovascular diseases.
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Affiliation(s)
- Rama Alhasan
- Université de Lorraine, CITHEFOR, F-54000 Nancy, France; Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, 66123 Saarbruecken, Germany
| | - Guilherme M Martins
- Department of Chemistry, Federal University of Sao Carlos, UFSCar, 13565-905 São Carlos, SP, Brazil; Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, UFMG, 31270-901 Belo Horizonte, MG, Brazil
| | - Pedro P de Castro
- Department of Chemistry, Federal University of Sao Carlos, UFSCar, 13565-905 São Carlos, SP, Brazil
| | - Rahman Shah Zaib Saleem
- Department of Chemistry and Chemical Engineering, SBA School of Sciences and Engineering, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Ali Zaiter
- Université de Lorraine, LCP-A2MC, F-57000 Metz, France
| | | | | | | | | | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, UFMG, 31270-901 Belo Horizonte, MG, Brazil.
| | - Caroline Gaucher
- Université de Lorraine, CITHEFOR, F-54000 Nancy, France; Université de Lorraine, CNRS, IMoPA, F-54000 Nancy, France.
| | - Claus Jacob
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, 66123 Saarbruecken, Germany
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4
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Cruz DM, Mostafavi E, Vernet-Crua A, O’Connell CP, Barabadi H, Mobini S, Cholula-Díaz JL, Guisbiers G, García-Martín JM, Webster TJ. Green nanotechnology and nanoselenium for biomedical applications. Nanomedicine (Lond) 2023. [DOI: 10.1016/b978-0-12-818627-5.00001-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
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5
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Huang L, Hu S, Fu YN, Wan Y, Li G, Wang X. Multicomponent carrier-free nanodrugs for cancer treatment. J Mater Chem B 2022; 10:9735-9754. [PMID: 36444567 DOI: 10.1039/d2tb02025d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Nanocarriers can be used to deliver insoluble anticancer drugs to optimize therapeutic efficacy. However, the potential toxicity of nanocarriers cannot be ignored. Carrier-free nanodrugs are emerging safe drug delivery systems, which are composed of multiple components, such as drugs, bioactive molecules and functional ingredients, avoiding the usage of inert carrier materials and offering advantages that include high drug loading, low toxicity, synergistic therapy, versatile design, and easy surface functionalization. Therefore, how to design multicomponent carrier-free nanodrugs is becoming a priority. In this review, the common strategies for rapid construction of multicomponent carrier-free nanodrugs are briefly explored from the perspective of methodology. The properties of organic-organic, organic-inorganic and inorganic-inorganic multiple carrier-free nanosystems are analyzed according to wettability and in-depth understanding is provided. Further advances in the applications of multiple carrier-free nanodrugs are outlined in anticipation of grasping the intrinsic nature for the design and development of carrier-free nanodrugs.
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Affiliation(s)
- Lifei Huang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Shuyang Hu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Ya-Nan Fu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Yan Wan
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Guofeng Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Xing Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China.
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Shimada BK, Swanson S, Toh P, Seale LA. Metabolism of Selenium, Selenocysteine, and Selenoproteins in Ferroptosis in Solid Tumor Cancers. Biomolecules 2022; 12:biom12111581. [PMID: 36358931 PMCID: PMC9687593 DOI: 10.3390/biom12111581] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 11/16/2022] Open
Abstract
A potential target of precision nutrition in cancer therapeutics is the micronutrient selenium (Se). Se is metabolized and incorporated as the amino acid selenocysteine (Sec) into 25 human selenoproteins, including glutathione peroxidases (GPXs) and thioredoxin reductases (TXNRDs), among others. Both the processes of Se and Sec metabolism for the production of selenoproteins and the action of selenoproteins are utilized by cancer cells from solid tumors as a protective mechanism against oxidative damage and to resist ferroptosis, an iron-dependent cell death mechanism. Protection against ferroptosis in cancer cells requires sustained production of the selenoprotein GPX4, which involves increasing the uptake of Se, potentially activating Se metabolic pathways such as the trans-selenation pathway and the TXNRD1-dependent decomposition of inorganic selenocompounds to sustain GPX4 synthesis. Additionally, endoplasmic reticulum-resident selenoproteins also affect apoptotic responses in the presence of selenocompounds. Selenoproteins may also help cancer cells adapting against increased oxidative damage and the challenges of a modified nutrient metabolism that result from the Warburg switch. Finally, cancer cells may also rewire the selenoprotein hierarchy and use Se-related machinery to prioritize selenoproteins that are essential to the adaptations against ferroptosis and oxidative damage. In this review, we discuss both the evidence and the gaps in knowledge on how cancer cells from solid tumors use Se, Sec, selenoproteins, and the Se-related machinery to promote their survival particularly via resistance to ferroptosis.
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7
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Nadeem RY, Yaqoob M, Yam W, Haque RA, Iqbal MA. Synthesis, characterization and biological evaluation of Bis-benzimidazolium salts and their silver(I)-N-heterocyclic carbene complexes. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02942-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Ferroptosis as a mechanism of non-ferrous metal toxicity. Arch Toxicol 2022; 96:2391-2417. [PMID: 35727353 DOI: 10.1007/s00204-022-03317-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/11/2022] [Indexed: 11/02/2022]
Abstract
Ferroptosis is a recently discovered form of regulated cell death, implicated in multiple pathologies. Given that the toxicity elicited by some metals is linked to alterations in iron metabolism and induction of oxidative stress and lipid peroxidation, ferroptosis might be involved in such toxicity. Although direct evidence is insufficient, certain pioneering studies have demonstrated a crosstalk between metal toxicity and ferroptosis. Specifically, the mechanisms underlying metal-induced ferroptosis include induction of ferritinophagy, increased DMT-1 and TfR cellular iron uptake, mitochondrial dysfunction and mitochondrial reactive oxygen species (mitoROS) generation, inhibition of Xc-system and glutathione peroxidase 4 (GPX4) activity, altogether resulting in oxidative stress and lipid peroxidation. In addition, there is direct evidence of the role of ferroptosis in the toxicity of arsenic, cadmium, zinc, manganese, copper, and aluminum exposure. In contrast, findings on the impact of cobalt and nickel on ferroptosis are scant and nearly lacking altogether for mercury and especially lead. Other gaps in the field include limited studies on the role of metal speciation in ferroptosis and the critical cellular targets. Although further detailed studies are required, it seems reasonable to propose even at this early stage that ferroptosis may play a significant role in metal toxicity, and its modulation may be considered as a potential therapeutic tool for the amelioration of metal toxicity.
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Hamsath A, Lederberg OL, Cui Q, Shieh M, Lam Y, Brummett BJ, Xu S, Robinson JR, Xian M. Intramolecular tetrazine-acryloyl cycloaddition: chemistry and applications. Chem Sci 2022; 13:10336-10341. [PMID: 36277625 PMCID: PMC9473534 DOI: 10.1039/d2sc04331a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 08/11/2022] [Indexed: 11/21/2022] Open
Abstract
An unprecedented intramolecular [4 + 2] tetrazine-olefin cycloaddition with α,β-unsaturated substrates was discovered. The reaction produces unique coumarin-dihydropyridazine heterocycles that exhibited strong fluorescence with large Stokes shifts and excellent photo- and pH-stability. This property can be used for reaction analysis. The rate of cycloaddition was found to be solvent dependent and was determined using experimental data with a kinetic modeling software (COPASI) as well as DFT calculations (k1 = 0.64 ± 0.019 s−1 and 4.1 s−1, respectively). The effects of steric and electronic properties of both the tetrazine and α,β-unsaturated carbonyl on the reaction were studied and followed the known trends characteristic of the intermolecular reaction. Based on these results, we developed a “release-then-click” strategy for the ROS triggered release of methylselenenic acid (MeSeOH) and a fluorescent tracer. This strategy was demonstrated in HeLa cells via fluorescence imaging. Tetrazines rapidly react with tethered acrylates/acrylamides to produce fused coumarin derivatives. This template can be used in prodrug designs by depleting toxic α,β-unsaturated byproducts while also producing an imaging agent.![]()
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Affiliation(s)
- Akil Hamsath
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Oren L. Lederberg
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Qi Cui
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Meg Shieh
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Yannie Lam
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Brock J. Brummett
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Shi Xu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Jerome R. Robinson
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
| | - Ming Xian
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
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10
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Liang ZL, Tan HW, Wu JY, Chen XL, Wang XY, Xu YM, Lau ATY. The Impact of ZIP8 Disease-Associated Variants G38R, C113S, G204C, and S335T on Selenium and Cadmium Accumulations: The First Characterization. Int J Mol Sci 2021; 22:ijms222111399. [PMID: 34768831 PMCID: PMC8583799 DOI: 10.3390/ijms222111399] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/14/2021] [Accepted: 10/14/2021] [Indexed: 02/05/2023] Open
Abstract
The metal cation symporter ZIP8 (SLC39A8) is a transmembrane protein that imports the essential micronutrients iron, manganese, and zinc, as well as heavy toxic metal cadmium (Cd). It has been recently suggested that selenium (Se), another essential micronutrient that has long been known for its role in human health and cancer risk, may also be transported by the ZIP8 protein. Several mutations in the ZIP8 gene are associated with the aberrant ion homeostasis of cells and can lead to human diseases. However, the intricate relationships between ZIP8 mutations, cellular Se homeostasis, and human diseases (including cancers and illnesses associated with Cd exposure) have not been explored. To further verify if ZIP8 is involved in cellular Se transportation, we first knockout (KO) the endogenous expression of ZIP8 in the HeLa cells using the CRISPR/Cas9 system. The elimination of ZIP8 expression was examined by PCR, DNA sequencing, immunoblot, and immunofluorescence analyses. Inductively coupled plasma mass spectrometry indicated that reduced uptake of Se, along with other micronutrients and Cd, was observed in the ZIP8-KO cells. In contrast, when ZIP8 was overexpressed, increased Se uptake could be detected in the ZIP8-overexpressing cells. Additionally, we found that ZIP8 with disease-associated single-point mutations G38R, G204C, and S335T, but not C113S, showed reduced Se transport ability. We then evaluated the potential of Se on Cd cytotoxicity prevention and therapy of cancers. Results indicated that Se could suppress Cd-induced cytotoxicity via decreasing the intracellular Cd transported by ZIP8, and Se exhibited excellent anticancer activity against not all but only selected cancer cell lines, under restricted experimental conditions. Moreover, clinical-based bioinformatic analyses revealed that up-regulated ZIP8 gene expression was common across multiple cancer types, and selenoproteins that were significantly co-expressed with ZIP8 in these cancers had been identified. Taken together, this study concludes that ZIP8 is an important protein in modulating cellular Se levels and provides insights into the roles of ZIP8 and Se in disease prevention and therapy.
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Affiliation(s)
| | | | | | | | | | - Yan-Ming Xu
- Correspondence: (Y.-M.X.); (A.T.Y.L.); Tel.: +86-754-8890-0437 (Y.-M.X.); +86-754-8853-0052 (A.T.Y.L.)
| | - Andy T. Y. Lau
- Correspondence: (Y.-M.X.); (A.T.Y.L.); Tel.: +86-754-8890-0437 (Y.-M.X.); +86-754-8853-0052 (A.T.Y.L.)
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11
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Varlamova EG, Turovsky EA, Blinova EV. Therapeutic Potential and Main Methods of Obtaining Selenium Nanoparticles. Int J Mol Sci 2021; 22:ijms221910808. [PMID: 34639150 PMCID: PMC8509153 DOI: 10.3390/ijms221910808] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/29/2021] [Accepted: 10/04/2021] [Indexed: 02/06/2023] Open
Abstract
This review presents the latest data on the importance of selenium nanoparticles in human health, their use in medicine, and the main known methods of their production by various methods. In recent years, a multifaceted study of nanoscale complexes in medicine, including selenium nanoparticles, has become very important in view of a number of positive features that make it possible to create new drugs based on them or significantly improve the properties of existing drugs. It is known that selenium is an essential trace element that is part of key antioxidant enzymes. In mammals, there are 25 selenoproteins, in which selenium is a key component of the active site. The important role of selenium in human health has been repeatedly proven by several hundred works in the past few decades; in recent years, the study of selenium nanocomplexes has become the focus of researchers. A large amount of accumulated data requires generalization and systematization in order to improve understanding of the key mechanisms and prospects for the use of selenium nanoparticles in medicine, which is the purpose of this review.
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Affiliation(s)
- Elena G. Varlamova
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, 142290 Pushchino, Russia
- Correspondence: (E.G.V.); (E.A.T.)
| | - Egor A. Turovsky
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, 142290 Pushchino, Russia
- Correspondence: (E.G.V.); (E.A.T.)
| | - Ekaterina V. Blinova
- Department of Clinical Anatomy and Operative Surgery, Department of Pharmacological Technology and Pharmacology, Sechenov University, 8/1 Trubetzkaya Street, 119991 Moscow, Russia;
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12
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Eteshola EOU, Haupt DA, Koos SI, Siemer LA, Morris DL. The role of metal ion binding in the antioxidant mechanisms of reduced and oxidized glutathione in metal-mediated oxidative DNA damage. Metallomics 2020; 12:79-91. [PMID: 31750486 DOI: 10.1039/c9mt00231f] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The antioxidant activity of glutathione in its reduced (GSH) and oxidized (GSSG) forms against metal-mediated oxidative DNA damage was studied by monitoring production of 8-hydroxy-2'-deoxyguanosine (8-OH-dG) from calf-thymus DNA. GSH and GSSG were combined with Fe(ii) and Cu(ii) before and after addition of DNA to investigate the role of metal coordination in the antioxidant mechanism. The antioxidant behavior of GSH and GSSG was also compared to the known radical scavenger DMSO. GSH and GSSG lower oxidative DNA damage for Fe(ii) and Cu(ii) reactions. GSH only exhibited appreciable antioxidant behavior when combined with Fe(ii) prior to adding DNA, and GSH and GSSG were slightly more effective against Cu(ii)-mediated damage when combined with Cu(ii) prior to adding DNA. Raman spectra of GSH in the presence of Cu(ii) indicate that Cu(ii) oxidizes GSH and raises the possibility that the antioxidant activity of GSH against Cu(ii) reactions may be attributed to its ability to form GSSG. No evidence of GSH oxidation in the presence of Fe(ii) was observed. The fluorescent probe dichlorofluorescein diacetate (DCF-DA) shows that the presence of GSH (for Cu(ii) reactions) and GSSG (for Fe(ii) and Cu(ii) reactions) lowers levels of reactive oxygen species (ROS) in bulk solution. Overall, the results suggest that the mechanism of antioxidant activity for GSH and GSSG against Fe(ii) and Cu(ii)-mediated oxidative damage involves metal coordination, and isothermal titration calorimetry (ITC) studies of the Cu(ii)-GSSG system show an enthalpically favored complexation reaction with an apparent 1 : 1 stoichiometry.
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Affiliation(s)
- Elias O U Eteshola
- Department of Pharmacology & Cancer Biology/Department of Surgery, Duke University, Durham, NC 27710, USA
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Ashraf R, Iqbal MA, Bhatti HN, Janjua MRSA, El‐Naggar M. Bioactivity and DNA/BSA Interactions of Selenium N‐Heterocyclic Carbene Adducts. ChemistrySelect 2020. [DOI: 10.1002/slct.202001990] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rizwan Ashraf
- Department of Chemistry University of Agriculture Faisalabad 38040, Punjab Pakistan
| | - Muhammad Adnan Iqbal
- Department of Chemistry University of Agriculture Faisalabad 38040, Punjab Pakistan
- Organometallic and Coordination Chemistry Laboratory University of Agriculture Faisalabad 38040, Punjab Pakistan
| | - Haq Nawaz Bhatti
- Department of Chemistry University of Agriculture Faisalabad 38040, Punjab Pakistan
| | | | - Mohamed El‐Naggar
- Department of Chemistry University of Sharjah P. O.Box 27272 Sharjah United Arab Emirates
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Varlamova EG, Zaripov OG. Beta-lactoglobulin-nutrition allergen and nanotransporter of different nature ligands therapy with therapeutic action. Res Vet Sci 2020; 133:17-25. [PMID: 32919234 DOI: 10.1016/j.rvsc.2020.08.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/08/2020] [Accepted: 08/28/2020] [Indexed: 02/06/2023]
Abstract
β-lactoglobulin is one of the nutrition allergens present in the milk of many mammals, with the exception of human. This protein belongs to the family of lipocalins, consisting of nine antiparallel β-strands (β-A to β-I) and one α-helix. This structure allows it to serve as a nanotransporter of various nature ligands in a pH dependent manner, which allows us to confidently consider it as a reliable carrier of drugs directly into the intestine, bypassing the destructive acidic environment of the stomach. Based on the latest data, this review describes the currently known methods of reducing the allergenicity of beta-lactoglobulin, as well as the mechanisms and methods of forming complexes of this protein with ligands, which emphasizes its importance and versatility and explains the growing interest in studying its properties in recent decades, and also opens up prospects for its practical application in medicine and pharmaceuticals.
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Affiliation(s)
- E G Varlamova
- Federal State Institution of Science Institute of Cell Biophysics, Russian Academy of Sciences, Institutskaya st. 3, 142290, Pushchino, Moscow Region, Russia.
| | - O G Zaripov
- Federal Science Center for Animal Husbandry named after Academy Member L.K. Ernst, Dubrovitsy village, house 60, 142132, Moscow region, Podolsky city district, Russia
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15
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Goltyaev MV, Mal'tseva VN, Varlamova EG. Expression of ER-resident selenoproteins and activation of cancer cells apoptosis mechanisms under ER-stress conditions caused by methylseleninic acid. Gene 2020; 755:144884. [PMID: 32562739 DOI: 10.1016/j.gene.2020.144884] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/10/2020] [Accepted: 06/08/2020] [Indexed: 01/21/2023]
Abstract
The aim of this work was to study changes in gene expression levels of 7 ER-resident selenoproteins under ER-stress caused by the action of a selenium-containing compound of organic nature, methylselenic acid using three human cancer cell lines DU 145 (prostate carcinoma), MCF 7 (breast adenocarcinoma)and HT-1080 (fibrosarcoma). According to the obtained results, we can speak of a synchronous changes in the expression of SELT and SEP15 mRNA depending on the concentration of MSA for 24 h, while the pattern of SELM expression was completely opposite and was radically different from other selenoproteins. It should be noted that in HT-1080 cells, the expression pattern of SELM differed from the expression pattern in two other cancer cells, while the expression patterns of other ER-resident selenoproteins (SELT, SEP15, SELK, SELS, SELN and DIO2) differed slightly depending on the cell line. Also we investigated the molecular mechanisms of UPR caused by MSA-induced ER stress in three cancer cell lines. According to the obtained results, it can be assumed that in DU 145 cells, MSA promotes activation of the PERK signaling pathway of UPR. In fibrosarcoma cells MSA was promoted the activation of ATF-6 UPR signaling pathway. In MCF 7 cells, MSA promoted the activation of two pro-apoptotic UPR signaling pathways at once: IRE1 and ATF-6.The results of this work once again demonstrate that the mechanisms of ER-stress regulation caused by the same agent, in this case, MSA, lead to the activation of different UPR signaling pathways in different cancer cells, and about their relationship.
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Affiliation(s)
- M V Goltyaev
- Federal State Institution of Science Institute of Cell Biophysics, Russian Academy of Sciences, Institutskaya st. 3, 142290 Pushchino, Moscow Region, Russia
| | - V N Mal'tseva
- Federal State Institution of Science Institute of Cell Biophysics, Russian Academy of Sciences, Institutskaya st. 3, 142290 Pushchino, Moscow Region, Russia
| | - E G Varlamova
- Federal State Institution of Science Institute of Cell Biophysics, Russian Academy of Sciences, Institutskaya st. 3, 142290 Pushchino, Moscow Region, Russia.
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Lin Y, Wu C, Yan W, Guo S, Liu B. Five Serum Trace Elements Associated with Risk of Cardia and Noncardia Gastric Cancer in a Matched Case-Control Study. Cancer Manag Res 2020; 12:4441-4451. [PMID: 32606938 PMCID: PMC7293905 DOI: 10.2147/cmar.s250592] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 03/23/2020] [Indexed: 01/10/2023] Open
Abstract
Background Serum trace elements have for some time been suggested to influence the development of gastric cancer, but evidence is still lacking. Methods All newly diagnosed patients with gastric cancer were compared with healthy controls 1:1 matched by sex, age (±3 years), and place of residence during 2013-2015. The serum concentration of all trace elements was analyzed using inductively coupled plasma mass spectrometry. Heliobacter pylori infections in cases were diagnosed using the rapid urease test, while in controls were detected using the colloidal gold method. Results A total of 122 cases of gastric cardia cancer (GCC) and 177 gastric noncardia cancer (NCGC), and 299 matched healthy controls were included. Positive associations were found between serum copper and copper/zinc ratio and risk of overall gastric cancer (OR4th vs 1st quartile: 2.42, 95% CI: 1.10-5.32 for copper; OR4th vs 1st quartile: 11.7, 95% CI: 3.83-35.6 for copper/zinc ratio), and for both GCC and NCGC subtypes. Serum selenium was inversely associated with the risk of NCGC (OR4th vs 1st quartile: 0.18, 95% CI: 0.07-0.51), while molybdenum seems to reduce the risk of GCC (OR4th vs 1st quartile: 0.12, 95% CI: 0.03-0.47). Strong inverse associations were also detected between serum calcium and risk of all groups of gastric cancer (all p for trend<0.05). Conclusion The current study indicated statistically significant positive associations between serum copper, copper/zinc ratio, and gastric cancer, as well as inverse associations among selenium, molybdenum, and calcium. The results shall be carefully interpreted before further in vivo animal studies show definitive evidence.
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Affiliation(s)
- Yulan Lin
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fuzhou 350122, Fujian, People's Republic of China
| | - Chuancheng Wu
- Department of Preventive Medicine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, People's Republic of China.,Fujian Provincial Key Laboratory of Environment Factors and Cancer, Fujian Medical University, Fuzhou, People's Republic of China
| | - Wei Yan
- Fujian Xianyou County Hospital, Putian, People's Republic of China
| | - Saixiong Guo
- Fujian Xianyou County Hospital, Putian, People's Republic of China
| | - Baoying Liu
- Department of Preventive Medicine, School of Public Health, Fujian Medical University, Fuzhou, Fujian, People's Republic of China.,Fujian Provincial Key Laboratory of Environment Factors and Cancer, Fujian Medical University, Fuzhou, People's Republic of China
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Alhasan R, Kharma A, Leroy P, Jacob C, Gaucher C. Selenium Donors at the Junction of Inflammatory Diseases. Curr Pharm Des 2020; 25:1707-1716. [PMID: 31267853 DOI: 10.2174/1381612825666190701153903] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 06/18/2019] [Indexed: 12/25/2022]
Abstract
Selenium is an essential non-metal trace element, and the imbalance in the bioavailability of selenium is associated with many diseases ranking from acute respiratory distress syndrome, myocardial infarction and renal failure (Se overloading) to diseases associated with chronic inflammation like inflammatory bowel diseases, rheumatoid arthritis, and atherosclerosis (Se unload). The only source of selenium is the diet (animal and cereal sources) and its intestinal absorption is limiting for selenocysteine and selenomethionine synthesis and incorporation in selenoproteins. In this review, after establishing the link between selenium and inflammatory diseases, we envisaged the potential of selenium nanoparticles and organic selenocompounds to compensate the deficit of selenium intake from the diet. With high selenium loading, nanoparticles offer a low dosage to restore selenium bioavailability whereas organic selenocompounds can play a role in the modulation of their antioxidant or antiinflammatory activities.
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Affiliation(s)
- Rama Alhasan
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbrucken, Germany
| | - Ammar Kharma
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbrucken, Germany
| | - Pierre Leroy
- Universite de Lorraine, CITHEFOR, F-54000 Nancy, France
| | - Claus Jacob
- Division of Bioorganic Chemistry, School of Pharmacy, Saarland University, D-66123 Saarbrucken, Germany
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18
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Golmohammadi R, Najar-Peerayeh S, Tohidi Moghadam T, Hosseini SMJ. Synergistic Antibacterial Activity and Wound Healing Properties of Selenium-Chitosan-Mupirocin Nanohybrid System: An in Vivo Study on Rat Diabetic Staphylococcus aureus Wound Infection Model. Sci Rep 2020; 10:2854. [PMID: 32071320 PMCID: PMC7028993 DOI: 10.1038/s41598-020-59510-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 01/27/2020] [Indexed: 11/21/2022] Open
Abstract
The current study aimed to formulate Selenium-Chitosan-Mupirocin (M-SeNPs-CCH) complex. The nanohybrid system was prepared using chitosan-cetyltrimethylammonium bromide (CTAB)-based hydrogel (CCH) that entrapped mupirocin (M) and selenium nanoparticles (SeNPs). The in vitro studies were performed by evaluation of the antibacterial activity and toxicity on L929 mouse fibroblast cell line. The in vivo study was conducted on rat diabetic wound infection model that was infected by mupirocin-methicillin-resistant Staphylococcus aureus (MMRSA). The wounds were treated by M-SeNPs-CCH nanohybrid system with concentrations of M; 20 mg/ml, CCH; 2 mg/ml and SeNPs; 512 μg/ml in two times/day for 21 days. The therapeutic effect of this nanohybrid system was evaluated by monitoring wound contraction and histopathological changes. Evaluation of the average wound healing time showed a significant difference between the treatment and control groups (P≤0.05). The histopathological study indicated that the amount of wound healing was considerable in M-SeNPs-CCH nanohybrid system groups compared to the control and M groups. The M-SeNPs-CCH nanohybrid system formulated in this study was able to reduce 3-fold MIC of mupirocin with synergistic antibacterial activity as well as to play a significant role in wound contraction, angiogenesis, fibroblastosis, collagenesis, proliferation of hair follicle, and epidermis growth compared to the control group (P ≤ 0.05). This research suggests that this nanohybrid system might be a development for the treatment of diabetic wound infection at mild stage.
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Affiliation(s)
- Reza Golmohammadi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Shahin Najar-Peerayeh
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Tahereh Tohidi Moghadam
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Seyed Mohammad Javad Hosseini
- Molecular Biology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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19
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Orabi SH, Abd Eldaium D, Hassan A, Sabagh HSE, Abd Eldaim MA. Allicin modulates diclofenac sodium induced hepatonephro toxicity in rats via reducing oxidative stress and caspase 3 protein expression. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2020; 74:103306. [PMID: 31812117 DOI: 10.1016/j.etap.2019.103306] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/21/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
PURPOSE This study was designed to evaluate the protective effects of allicin against diclofenac sodium induced hepatonephro toxicity in rats. METHODS Sixty male Wister albino rats were assigned into six groups. The control group received calcium carbonate and corn starch. 2nd group received diclofenac sodium (2 mg/kg bw orally) for 30 days. 3rd group received allicin (45 mg/kg bw orally) for 30 days. 4th group administrated diclofenac sodium as in the 2nd group and allicin (15 mg/kg bw orally) for 30 days. 5th group received diclofenac sodium as in the 2nd group and allicin (30 mg/kg bw orally) for 30 days. 6th group received diclofenac sodium as 2nd and allicin (45 mg/kg bw orally) for 30 days. RESULTS Diclofenac sodium significantly elevated activities of serum aspartate aminotransferase and alanine aminotransferase and serum levels of creatinine and urea. In addition, it induced hyperglycemia, lipid peroxidation, pathological alteration and caspase 3 protein expression in hepatic and renal tissues. However, it decreased reduced glutathione concentration and proliferating cell nuclear antigen protein expression in hepatic tissues. In contrast, allicin modulated the diclofenac sodium induced alteration in liver and kidney functions and structures dose dependently. CONCLUSION This study indicated that allicin had potential preventive effects against diclofenac sodium induced hepatonephro toxicity in rats.
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Affiliation(s)
- Sahar Hassan Orabi
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt.
| | - Doaa Abd Eldaium
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt
| | - Azza Hassan
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt
| | - Hesham Saad El Sabagh
- Department of Toxicology and Fronsic Medicine, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt
| | - Mabrouk Attia Abd Eldaim
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Menoufia University, Sheben Elkom, Egypt; Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, 606-8502, Japan
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20
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Bruntz RC, Belshoff AC, Zhang Y, Macedo JKA, Higashi RM, Lane AN, Fan TWM. Inhibition of Anaplerotic Glutaminolysis Underlies Selenite Toxicity in Human Lung Cancer. Proteomics 2019; 19:e1800486. [PMID: 31298457 DOI: 10.1002/pmic.201800486] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 07/04/2019] [Indexed: 01/01/2023]
Abstract
Large clinical trials and model systems studies suggest that the chemical form of selenium dictates chemopreventive and chemotherapeutic efficacy. Selenite induces excess ROS production, which mediates autophagy and eventual cell death in non-small cell lung cancer adenocarcinoma A549 cells. As the mechanisms underlying these phenotypic effects are unclear, the clinical relevance of selenite for cancer therapy remains to be determined. The authors' previous stable isotope-resolved metabolomics and gene expression analysis showed that selenite disrupts glycolysis, the Krebs cycle, and polyamine metabolism in A549 cells, potentially through perturbed glutaminolysis, a vital anaplerotic process for proliferation of many cancer cells. Herein, the role of the glutaminolytic enzyme glutaminase 1 (GLS1) in selenite's toxicity in A549 cells and in patient-derived lung cancer tissues is investigated. Using [13 C6 ]-glucose and [13 C5 ,15 N2 ]-glutamine tracers, selenite's action on metabolic networks is determined. Selenite inhibits glutaminolysis and glutathione synthesis by suppressing GLS1 expression, and blocks the Krebs cycle, but transiently activates pyruvate carboxylase activity. Glutamate supplementation partially rescues these anti-proliferative and oxidative stress activities. Similar metabolic perturbations and necrosis are observed in selenite-treated human patients' cancerous lung tissues ex vivo. The results support the hypothesis that GLS1 suppression mediates part of the anti-cancer activity of selenite both in vitro and ex vivo.
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Affiliation(s)
- Ronald C Bruntz
- Center for Environmental and Systems Biochemistry, Markey Cancer Center, and Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Alex C Belshoff
- Department of Chemistry, University of Louisville, Louisville, KY, 40292, USA
| | - Yan Zhang
- Center for Environmental and Systems Biochemistry, Markey Cancer Center, and Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Jessica K A Macedo
- Center for Environmental and Systems Biochemistry, Markey Cancer Center, and Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Richard M Higashi
- Center for Environmental and Systems Biochemistry, Markey Cancer Center, and Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Andrew N Lane
- Center for Environmental and Systems Biochemistry, Markey Cancer Center, and Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Teresa W-M Fan
- Center for Environmental and Systems Biochemistry, Markey Cancer Center, and Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY, 40536-0596, USA
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Selenized Plant Oil Is an Efficient Source of Selenium for Selenoprotein Biosynthesis in Human Cell Lines. Nutrients 2019; 11:nu11071524. [PMID: 31277500 PMCID: PMC6682991 DOI: 10.3390/nu11071524] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/01/2019] [Accepted: 07/02/2019] [Indexed: 11/17/2022] Open
Abstract
Selenium is an essential trace element which is incorporated in the form of a rare amino acid, the selenocysteine, into an important group of proteins, the selenoproteins. Among the twenty-five selenoprotein genes identified to date, several have important cellular functions in antioxidant defense, cell signaling and redox homeostasis. Many selenoproteins are regulated by the availability of selenium which mostly occurs in the form of water-soluble molecules, either organic (selenomethionine, selenocysteine, and selenoproteins) or inorganic (selenate or selenite). Recently, a mixture of selenitriglycerides, obtained by the reaction of selenite with sunflower oil at high temperature, referred to as Selol, was proposed as a novel non-toxic, highly bioavailable and active antioxidant and antineoplastic agent. Free selenite is not present in the final product since the two phases (water soluble and oil) are separated and the residual water-soluble selenite discarded. Here we compare the assimilation of selenium as Selol, selenite and selenate by various cancerous (LNCaP) or immortalized (HEK293 and PNT1A) cell lines. An approach combining analytical chemistry, molecular biology and biochemistry demonstrated that selenium from Selol was efficiently incorporated in selenoproteins in human cell lines, and thus produced the first ever evidence of the bioavailability of selenium from selenized lipids.
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Sharma SK, Bansal MP, Sandhir R. Altered dietary selenium influences brain iron content and behavioural outcomes. Behav Brain Res 2019; 372:112011. [PMID: 31212061 DOI: 10.1016/j.bbr.2019.112011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/31/2019] [Accepted: 06/03/2019] [Indexed: 02/07/2023]
Abstract
Selenium (Se) is an essential micronutrient that provides antioxidant defence through selenoproteins, but at high concentrations, deleterious effects have been reported. The present study examines the antioxidant response in brain regions and behavioural functions in mice under various dietary Se paradigms; Se-deficient, Se-adequate and Se-excess. Se levels were found to be reduced in the cortex and hippocampus of Se-deficient animals, whereas no change was observed in animals on Se-excess diet. In the hippocampus, iron (Fe) levels increased in animals on Se-deficient and Se-excess diets. Moreover, in Se-deficient animals, Fe levels increased in cortex also. Interestingly, Se content in the hair positively correlated with the dietary Se intake. Total and Se-dependent glutathione peroxidase activity decreased in the cortex, hippocampus and cerebellum of animals on Se-deficient diet. On the other hand, the activity of these enzymes decreased in the cortex of animals on Se-excess diet. Further, lipid peroxidation increased in the cortex of animals on Se-deficient diet and in the hippocampus of animals on Se-excess diet. Cognitive functions assessed by Morris water maze and Y-maze tests revealed deficits in Se-deficient state. However, in Se-excess state cognitive deficits were observed only in Y-maze test. These findings suggest that long-term dietary variation in Se influences oxidative stress that impacts cognitive functions. Therefore, it is suggested that maintenance of Se status during postnatal development may be crucial for mental health.
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Affiliation(s)
- Sunil Kumar Sharma
- Department of Biochemistry, Basic Medical Sciences Block-II, Panjab University, Sector-25, Chandigarh 160014, India
| | - Mohinder Pal Bansal
- Department of Biophysics, Basic Medical Sciences Block-II, Panjab University, Sector-25, Chandigarh 160014, India
| | - Rajat Sandhir
- Department of Biochemistry, Basic Medical Sciences Block-II, Panjab University, Sector-25, Chandigarh 160014, India.
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Ullah H, Liu G, Yousaf B, Ali MU, Irshad S, Abbas Q, Ahmad R. A comprehensive review on environmental transformation of selenium: recent advances and research perspectives. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2019; 41:1003-1035. [PMID: 30267320 DOI: 10.1007/s10653-018-0195-8] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 09/21/2018] [Indexed: 05/09/2023]
Abstract
Selenium (Se) is an important micronutrient and essential trace element for both humans and animals, which exist in the environment ubiquitously. Selenium deficiency is an important issue worldwide, with various reported cases of its deficiency. Low selenium contents in some specific terrestrial environments have resulted in its deficiency in humans. However, high levels of selenium in the geochemical environment may have harmful influences and can cause a severe toxicity to living things. Due to its extremely narrow deficiency and toxicity limits, selenium is becoming a serious matter of discussion for the scientists who deals with selenium-related environmental and health issues. Based on available relevant literature, this review provides a comprehensive data about Se sources, levels, production and factors affecting selenium bioavailability/speciation in soil, characteristics of Se, biogeochemical cycling, deficiency and toxicity, and its environmental transformation to know the Se distribution in the environment. Further research should focus on thoroughly understanding the concentration, speciation, Se cycling in the environment and food chain to effectively utilize Se resources, remediate Se deficiency/toxicity, and evaluate the Se states and eco-effects on human health.
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Affiliation(s)
- Habib Ullah
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Guijian Liu
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People's Republic of China.
| | - Balal Yousaf
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Muhammad Ubaid Ali
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Samina Irshad
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Qumber Abbas
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Rafay Ahmad
- CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People's Republic of China
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DFT modeling of the prevention of Fe(II)-mediated redox damage by imidazole-based thiones and selones. J Inorg Biochem 2019; 193:9-14. [DOI: 10.1016/j.jinorgbio.2018.12.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/24/2018] [Accepted: 12/25/2018] [Indexed: 12/27/2022]
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Chatzipapas KP, Papadimitroulas P, Obeidat M, McConnell KA, Kirby N, Loudos G, Papanikolaou N, Kagadis GC. Quantification of DNA double-strand breaks using Geant4-DNA. Med Phys 2019; 46:405-413. [PMID: 30418675 PMCID: PMC7379675 DOI: 10.1002/mp.13290] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/30/2018] [Accepted: 11/06/2018] [Indexed: 01/24/2023] Open
Abstract
PURPOSE This study aims to standardize the simulation procedure in measuring DNA double-strand breaks (DSBs), by using advanced Monte Carlo toolkits, and newly introduced experimental methods for DNA DSB measurement. METHODS For the experimental quantification of DNA DSB, an innovative DNA dosimeter was used to produce experimental data. GATE in combination with Geant4-DNA toolkit were exploited to simulate the experimental environment. The PDB4DNA example of Geant4-DNA was upgraded and investigated. Parameters of the simulation such energy threshold (ET) for a strand break and base pair threshold (BPT) for a DSB were evaluated, depending on the dose. RESULTS Simulations resulted to minimum differentiation in comparison to experimental data for ET = 19 ± 1 eV and BPT = 10 bp, and high differentiation for ET<17.5 eV or ET>22.5 eV and BPT = 10 bp. There was also small differentiation for ET = 17.5 eV and BPT = 6 bp. Uncertainty has been kept lower than 3%. CONCLUSIONS This study includes first results on the quantification of DNA double-strand breaks. The energy spectrum of a LINAC was simulated and used for the first time to irradiate DNA molecules. Simulation outcome was validated on experimental data that were produced by a prototype DNA dosimeter.
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Affiliation(s)
| | | | | | | | - Neil Kirby
- University of TexasHealth Science CenterSan AntonioTX78229USA
| | - George Loudos
- University of West AtticaDepartment of Biomedical EngineeringEgaleoGR12243Greece
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Collery P. Strategies for the development of selenium-based anticancer drugs. J Trace Elem Med Biol 2018; 50:498-507. [PMID: 29548612 DOI: 10.1016/j.jtemb.2018.02.024] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 02/20/2018] [Accepted: 02/26/2018] [Indexed: 02/07/2023]
Abstract
Many experimental models demonstrated that inorganic and organic selenium (Se) compounds may have an anticancer activity. However, large clinical studies failed to demonstrate that Se supplementations may prevent the outcome of cancers. Moreover, there are few randomized trials in cancer patients and there is not yet any Se compound recognized as anticancer drug. There is still a need to develop new Se compounds with new strategies. For that, it may be necessary to consider that Se compounds may have a dual role, either as anti-oxidant or as pro-oxidant. Experimental studies demonstrated that it is as pro-oxidant that Se compounds have anticancer effects, even though cancer cells have a pro-oxidant status. The oxidative status differs according to the type of cancer, the stage of the disease and to other parameters. We propose to adapt the doses of the Se compounds to markers of the oxidative stress, but also to markers of angiogenesis, which is strongly related with the oxidative status. A dual role of Se on angiogenesis has also been noted, either as pro-angiogenesis or as anti-angiogenesis. The objective for the development of new Se compounds, having a great selectivity on cancer cells, could be to try to normalize these oxidative and angiogenic markers in cancer patients, with an individual adaptation of doses.
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Affiliation(s)
- Philippe Collery
- Society for the Coordination of Therapeutic Researches, 20220 Algajola, France.
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27
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Guan B, Yan R, Li R, Zhang X. Selenium as a pleiotropic agent for medical discovery and drug delivery. Int J Nanomedicine 2018; 13:7473-7490. [PMID: 30532534 PMCID: PMC6241719 DOI: 10.2147/ijn.s181343] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Selenium as a biologically active element lends much support to health maintenance and disease prevention. It is now presenting pleiotropic effects on therapy and drug delivery. In this study, a profiling on the physiological functions, therapeutic significances, clinical/preclinical performances, and biomedical and drug delivery applications of selenium in different modalities was carried out. Major interests focused on selenium-based nanomedicines in confronting various diseases pertaining to selenium or not, especially in antitumor and antidiabetes. Furthermore, the article exclusively discusses selenium nanoparticles featured by ameliorative functions with emphasis on their applications in medical practice and drug delivery. The state-of-the-art in medical discovery as well as research and development on selenium and nano-selenium is discussed in this review.
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Affiliation(s)
- Baozhang Guan
- Department of Nephrology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Ruiling Yan
- Fetal Medicine Department, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Ruiman Li
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Jinan University, Guangzhou, China,
| | - Xingwang Zhang
- Department of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, China,
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28
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Varlamova EG, Goltyaev MV. The Effect of Sodium Selenite on the Expression of Genes of Endoplasmic Reticulum-Resident Selenoproteins in Human Fibrosarcoma Cells. Biophysics (Nagoya-shi) 2018. [DOI: 10.1134/s000635091805024x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Zoidis E, Seremelis I, Kontopoulos N, Danezis GP. Selenium-Dependent Antioxidant Enzymes: Actions and Properties of Selenoproteins. Antioxidants (Basel) 2018; 7:E66. [PMID: 29758013 PMCID: PMC5981252 DOI: 10.3390/antiox7050066] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 05/07/2018] [Accepted: 05/09/2018] [Indexed: 12/23/2022] Open
Abstract
Unlike other essential trace elements that interact with proteins in the form of cofactors, selenium (Se) becomes co-translationally incorporated into the polypeptide chain as part of 21st naturally occurring amino acid, selenocysteine (Sec), encoded by the UGA codon. Any protein that includes Sec in its polypeptide chain is defined as selenoprotein. Members of the selenoproteins family exert various functions and their synthesis depends on specific cofactors and on dietary Se. The Se intake in productive animals such as chickens affect nutrient utilization, production performances, antioxidative status and responses of the immune system. Although several functions of selenoproteins are unknown, many disorders are related to alterations in selenoprotein expression or activity. Selenium insufficiency and polymorphisms or mutations in selenoproteins' genes and synthesis cofactors are involved in the pathophysiology of many diseases, including cardiovascular disorders, immune dysfunctions, cancer, muscle and bone disorders, endocrine functions and neurological disorders. Finally, heavy metal poisoning decreases mRNA levels of selenoproteins and increases mRNA levels of inflammatory factors, underlying the antagonistic effect of Se. This review is an update on Se dependent antioxidant enzymes, presenting the current state of the art and is focusing on results obtained mainly in chicken.
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Affiliation(s)
- Evangelos Zoidis
- Department of Nutritional Physiology and Feeding, Faculty of Animal Science and Aquaculture, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece.
| | - Isidoros Seremelis
- Chemistry Laboratory, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece.
| | - Nikolaos Kontopoulos
- Chemistry Laboratory, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece.
| | - Georgios P Danezis
- Chemistry Laboratory, Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece.
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Varlamova EG, Goltyaev MV, Kuznetsova JP. Effect of Sodium Selenite on Gene Expression of SELF, SELW, and TGR Selenoproteins in Adenocarcinoma Cells of the Human Prostate. Mol Biol 2018. [DOI: 10.1134/s0026893318030147] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Patra AR, Roy SS, Basu A, Bhuniya A, Bhattacharjee A, Hajra S, Sk UH, Baral R, Bhattacharya S. Design and synthesis of coumarin-based organoselenium as a new hit for myeloprotection and synergistic therapeutic efficacy in adjuvant therapy. Sci Rep 2018; 8:2194. [PMID: 29391414 PMCID: PMC5794964 DOI: 10.1038/s41598-018-19854-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 01/08/2018] [Indexed: 11/09/2022] Open
Abstract
A newly designed organoselenium compound, methyl substituted umbelliferone selenocyanate (MUS), was synthesized as a primary hit against the myelotoxic activity of carboplatin. MUS was administered at 6 mg/kg b.wt, p.o. in concomitant and pretreatment schedules with carboplatin (12 mg/kg b.wt, i.p. for 10 days) in female Swiss albino mouse. MUS treatment reduced (P < 0.001) the percentage of chromosomal aberrations, micronuclei formation, DNA damage and apoptosis in murine bone marrow cells and also enhanced (P < 0.001) the bone marrow cell proliferation of the carboplatin-treated mice. These activities cumulatively restored the viable bone marrow cell count towards normalcy. Myeloprotection by MUS was achieved, in part, due to a significant reduction in the ROS/RNS formation and restoration of glutathione redox pool. Additionally, MUS synergistically enhanced the cytotoxicity of carboplatin against two human cancer cell lines (MCF-7 and Colo-205). Furthermore, MUS can effectively potentiate the antitumour activity of carboplatin against two murine cancers (Dalton's Lymphoma and Sarcoma-180) in vivo. These preclinical findings clearly indicate that MUS can improve the therapeutic index of carboplatin and ensures more effective therapeutic strategy against cancer for clinical development.
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Affiliation(s)
- Arup Ranjan Patra
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute, 37, S. P. Mukherjee Road, Kolkata, 700 026, West Bengal, India
| | - Somnath Singha Roy
- Centre of Biomedical Research, Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus, Raebareli Road, Lucknow, 226014, India
| | - Abhishek Basu
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute, 37, S. P. Mukherjee Road, Kolkata, 700 026, West Bengal, India
| | - Avishek Bhuniya
- Department of Immunoregulation and Immunodiagnostics, Chittaranjan National Cancer Institute, 37, S. P. Mukherjee Road, Kolkata, 700 026, West Bengal, India
| | - Arin Bhattacharjee
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute, 37, S. P. Mukherjee Road, Kolkata, 700 026, West Bengal, India
| | - Subhadip Hajra
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute, 37, S. P. Mukherjee Road, Kolkata, 700 026, West Bengal, India
| | - Ugir Hossain Sk
- Natural Product Chemistry & Process Development Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, 176061, Himachal Pradesh, India
| | - Rathindranath Baral
- Department of Immunoregulation and Immunodiagnostics, Chittaranjan National Cancer Institute, 37, S. P. Mukherjee Road, Kolkata, 700 026, West Bengal, India
| | - Sudin Bhattacharya
- Department of Cancer Chemoprevention, Chittaranjan National Cancer Institute, 37, S. P. Mukherjee Road, Kolkata, 700 026, West Bengal, India.
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Vindry C, Ohlmann T, Chavatte L. Selenium Metabolism, Regulation, and Sex Differences in Mammals. MOLECULAR AND INTEGRATIVE TOXICOLOGY 2018. [DOI: 10.1007/978-3-319-95390-8_5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Ndoni SA, Okoko T. Comparative effect of selenium and glycine on hydrogen peroxide-induced cell death and activation of macrophage U937 cells. J Genet Eng Biotechnol 2017; 15:521-526. [PMID: 30647695 PMCID: PMC6296632 DOI: 10.1016/j.jgeb.2017.06.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 05/08/2017] [Accepted: 06/10/2017] [Indexed: 12/04/2022]
Abstract
The effects of selenium and glycine (either separately or in combination) on hydrogen peroxide-induced cell death on U937 cells and activation of U937-derived macrophages were investigated. In the first instance, U937 cells were incubated with or without selenium (Se) or glycine (GLY) or both (Se + GLY) for 24 h before exposure to hydrogen peroxide. Control cells were not incubated with Se, GLY or exposed to hydrogen peroxide. Cell viability was later assessed via trypan blue and MTT assays. For the other experiment, U937 cells were transformed to the macrophage form using phorbol 12-myristate 13-acetate before incubating with or without Se, GLY, Se + GLY. Contents were subsequently exposed to hydrogen peroxide and 24 h later assessed for the production of TNF-α, IL-1, IL-6 and the expression of iNOS and NF-κB. The results revealed that hydrogen peroxide caused significant cell death which was ameliorated by both Se and GLY. Pre-incubation of the cells with both Se and GLY did not significantly enhance cell numbers compared to GLY (p > 0.05). On the other hand, Se and GLY reduced hydrogen peroxide-mediated production of TNF-α, IL-1, IL-6 and expression of iNOS and NF-κB. Incubating the U937-derived macrophages with Se + GLY significantly ameliorated hydrogen peroxide-mediated activation of macrophages when compared to pre-treatments with Se or GLY (p < 0.05). The findings demonstrate that both Se and GLY reduced hydrogen peroxide-induced alterations in U937 cells and U937-derived macrophages. Implications of the findings are discussed.
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Affiliation(s)
| | - Tebekeme Okoko
- Department of Biochemistry, Faculty of Basic Medical Sciences, Niger Delta University, PMB 71, Wilberforce Island, Bayelsa State, Nigeria
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Basoglu A, Baspinar N, Tenori L, Vignoli A, Gulersoy E. Effects of Boron Supplementation on Peripartum Dairy Cows' Health. Biol Trace Elem Res 2017; 179:218-225. [PMID: 28229388 DOI: 10.1007/s12011-017-0971-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 02/14/2017] [Indexed: 12/21/2022]
Abstract
Although many different dietary studies on the prevention of negative energy balance related diseases are often encountered, this is the first study investigating the effects of boron supplementation on peripartum dairy cows' health in the light of an omics approach. Twenty-eight healthy cows (1 control and 3 experimental groups) were enrolled from 2 months before predicted calving until 2 months after calving. Experimental groups were assigned to receive boron at increasing doses as an oral bolus. Production parameters, biochemical profile, Nuclear Magnetic Resonance based metabolomics profile, and mRNA abundance of gluconeogenic enzymes and lipid oxidation genes were determined. Pivotal knowledge was obtained on boron distribution in the body. Production parameters and mRNA abundance of the genes were not affected by the treatments. Postpartum nonesterified fatty acids, β-hydroxybutyrate, and triglyceride concentrations were significantly decreased in experimentals. The primary differences among groups were in lipid-soluble metabolites. There were significant differences in metabolites including postpartum valine, β-hydroxybutyrate, polyunsaturated fatty acid and citrate, propionate, isobutyrate, choline metabolites (betaine, phosphatidylcholine, and sphingomyelin), and some types of fatty acids and cholesterol in experimentals. Boron appears to be effective in minimizing negative energy balance and improving health of postpartum dairy cows.
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Affiliation(s)
- Abdullah Basoglu
- Department of Internal Medicine, Faculty of Veterinary Medicine, Selcuk University, Aleaddin Keykubat Campus, 42250, Selcuklu, Konya, Turkey.
| | - Nuri Baspinar
- Department of Biochemistry, Faculty of Veterinary Medicine, Selcuk University, Aleaddin Keykubat Campus, 42250, Selcuklu, Konya, Turkey
| | - Leonardo Tenori
- Consorzio Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134, Florence, Italy
| | - Alessia Vignoli
- Magnetic Resonance Center (CERM), University of Florence, Via Luigi Sacconi 6, 50019, Sesto Fiorentino (FI), Italy
| | - Erdem Gulersoy
- Department of Internal Medicine, Faculty of Veterinary Medicine, Selcuk University, Aleaddin Keykubat Campus, 42250, Selcuklu, Konya, Turkey
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Lan X, Xing J, Gao H, Li S, Quan L, Jiang Y, Ding S, Xue Y. Decreased Expression of Selenoproteins as a Poor Prognosticator of Gastric Cancer in Humans. Biol Trace Elem Res 2017; 178:22-28. [PMID: 27957666 DOI: 10.1007/s12011-016-0908-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 11/28/2016] [Indexed: 10/20/2022]
Abstract
The aim of the present study was to analyze the selenoprotein expression levels in gastric cancer patients. We enrolled 40 patients (29 males, 11 females) who were recently diagnosed with gastric cancer and 50 healthy people (30 males, 20 females) as controls. The expression of 25 selenoprotein genes (Dio1, Dio2, Dio3, Gpx1, Gpx2, Gpx3, Gpx4, Gpx6, SelH, SelI, SelK, SelM, SelN, SelO, SelP, SelS, SelT, SelV, SelW, SelX, Sel15, Sps2, TR1, TR2, and TR3) in human gastric cancer tissues, para-carcinoma tissues, adjacent normal gastric tissues, erythrocytes, and lymphocytes in the gastric cancer group and healthy control group was analyzed by qRT-PCR. Here, we showed that among the 25 selenoproteins, 13 selenoproteins in erythrocytes (Gpx1, Gpx4, Sel15, TR1, TR2, SelH, SelK, SelM, SelO, SelS, SelV, SelW, and Sps2), 15 selenoproteins in lymphocytes (Gpx1, Gpx4, Sel15, TR1, TR2, SelH, SelK, SelN, SelO, SelS, SelT, SelV, SelX, SelW, and Sps2) and 13 selenoproteins in gastric cancer and para-carcinoma tissues (Dio1, Dio2, Dio3, Gpx1, Gpx4, Sel15, SelH, SelK, SelM, SelS, SelT, SelW, and Sps2) were significantly decreased (P < 0.05) in the gastric cancer group compared to the control group. In summary, the decreasing expression of selenoprotein genes in gastric cancer patients play an important role in the gastric cancer, although further studies are needed to better understand our findings.
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Affiliation(s)
- Xiuwen Lan
- Department of Gastroenterological Surgery, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Jun Xing
- Department of Gastroenterological Surgery, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Hongyu Gao
- Department of Gastroenterological Surgery, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Sen Li
- Department of Gastroenterological Surgery, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, 150081, China
| | - Lina Quan
- Department of Hematology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
| | - Yang Jiang
- Department of Pathology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
| | - Shaohua Ding
- Department of Pathology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, China
| | - Yingwei Xue
- Department of Gastroenterological Surgery, The Affiliated Tumor Hospital of Harbin Medical University, 150 Haping Road, Nangang District, Harbin, 150081, China.
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Tavadyan LA, Manukyan ZH, Harutyunyan LH, Musayelyan MV, Sahakyan AD, Tonikyan HG. Antioxidant Properties of Selenophene, Thiophene and Their Aminocarbonitrile Derivatives. Antioxidants (Basel) 2017; 6:antiox6020022. [PMID: 28338603 PMCID: PMC5488002 DOI: 10.3390/antiox6020022] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/10/2017] [Accepted: 03/12/2017] [Indexed: 11/26/2022] Open
Abstract
The oxygen radical absorbance capacity (ORAC) method was used to detect the antiperoxyradical ability of organoselenium compounds: selenophene and its derivative, 2-amino-4,5,6,7-tetrahydro-1-selenophene-3-carbonitrile (ATSe); while as a comparison, the sulfur-containing analogue of selenophene—thiophene and its derivative—2-amino-4,5,6,7-tetrahydro-1-thiophene-3-carbonitrile (ATS)—was selected. Cyclic voltammetry (CV), differential pulse voltammetry (DPV) and squarewave voltammetry (SWV) methods were used to determine the redox characteristics of organoselenium and organosulfur compounds. The antiradical activity and capacity of the studied compounds were also measured by using stable radical 2,2ʹ-diphenyl-1-picrylhydrazyl (DPPH). Detected anodic peaks of the oxidation of selenophene, thiophene and their derivatives in CV, DPV and SWV in the interval of −1200 ÷ (+1600) mV potentials in regard to the Ag/Ag+ medium of acetonitrile prove the presence of antiperoxyradical activity in regard to oxidizers, i.e., peroxyradicals. The chemical mechanism of the antiperoxyradical ability of selenophene, thiophene and their organic derivatives is proposed.
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Affiliation(s)
- Levon A Tavadyan
- Aram Bagrat Nalbandyan Institute of Chemical Physics, National Academy of Sciences, 5/2 Sevak Street, Yerevan 0014, Armenia.
| | - Zaruhi H Manukyan
- Aram Bagrat Nalbandyan Institute of Chemical Physics, National Academy of Sciences, 5/2 Sevak Street, Yerevan 0014, Armenia.
| | - Lusik H Harutyunyan
- Aram Bagrat Nalbandyan Institute of Chemical Physics, National Academy of Sciences, 5/2 Sevak Street, Yerevan 0014, Armenia.
| | - Makich V Musayelyan
- Aram Bagrat Nalbandyan Institute of Chemical Physics, National Academy of Sciences, 5/2 Sevak Street, Yerevan 0014, Armenia.
| | - Adrine D Sahakyan
- Aram Bagrat Nalbandyan Institute of Chemical Physics, National Academy of Sciences, 5/2 Sevak Street, Yerevan 0014, Armenia.
| | - Hakob G Tonikyan
- Aram Bagrat Nalbandyan Institute of Chemical Physics, National Academy of Sciences, 5/2 Sevak Street, Yerevan 0014, Armenia.
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Butawan M, Benjamin RL, Bloomer RJ. Methylsulfonylmethane: Applications and Safety of a Novel Dietary Supplement. Nutrients 2017; 9:E290. [PMID: 28300758 PMCID: PMC5372953 DOI: 10.3390/nu9030290] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 02/22/2017] [Accepted: 03/13/2017] [Indexed: 12/20/2022] Open
Abstract
Methylsulfonylmethane (MSM) has become a popular dietary supplement used for a variety of purposes, including its most common use as an anti-inflammatory agent. It has been well-investigated in animal models, as well as in human clinical trials and experiments. A variety of health-specific outcome measures are improved with MSM supplementation, including inflammation, joint/muscle pain, oxidative stress, and antioxidant capacity. Initial evidence is available regarding the dose of MSM needed to provide benefit, although additional work is underway to determine the precise dose and time course of treatment needed to provide optimal benefits. As a Generally Recognized As Safe (GRAS) approved substance, MSM is well-tolerated by most individuals at dosages of up to four grams daily, with few known and mild side effects. This review provides an overview of MSM, with details regarding its common uses and applications as a dietary supplement, as well as its safety for consumption.
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Affiliation(s)
- Matthew Butawan
- Center for Nutraceutical and Dietary Supplement Research, School of Health Studies, The University of Memphis, Memphis, TN 38152, USA.
| | | | - Richard J Bloomer
- Center for Nutraceutical and Dietary Supplement Research, School of Health Studies, The University of Memphis, Memphis, TN 38152, USA.
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Huang H, Jiang Y, Mao G, Yuan F, Zheng H, Ruan Y, Wu T. Protective effects of allicin on streptozotocin-induced diabetic nephropathy in rats. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:1359-1366. [PMID: 27363537 DOI: 10.1002/jsfa.7874] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 02/27/2016] [Accepted: 06/20/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Studies in animal models have shown that allicin, a major biologically active component of garlic, can play a role in the prevention of tissue fibrosis in the liver, lung and heart, mainly related to the inhibition of fibroblast proliferation, fibrogenic cytokine secretion and extracellular matrix synthesis. This study aimed to investigate the protective effects of allicin on renal damage in streptozotocin (STZ)-induced diabetic rats. STZ-induced diabetic rats were administered allicin (15, 30 and 45 mg · kg-1 · day-1 ) via daily intra-gastric gavage for 12 weeks. The levels of fasting blood glucose (FBG), blood urea nitrogen (BUN), serum creatinine (sCr), lipid and 24 h urine albumin excretion (UAE) were measured at the end of weeks 4, 8 and 12. The renal histopathology and the expression levels of collagen I, transforming growth factor β1 (TGF-β1) and phosphorylated extracellular signal-regulated kinase 1/2 (p-ERK1/2) were measured using immunohistochemistry and/or western blotting. RESULTS In 12 week STZ-induced diabetic rats, severe hyperglycemia and albuminuria were markedly developed. Treatment with allicin for 12 weeks ameliorated diabetes-induced morphological alterations of the kidney and decreased FBG, BUN, sCr, triglyceride (TG) and 24 h UAE in diabetic rats. The expression levels of collagen I, TGF-β1 and p-ERK1/2 were significantly decreased by allicin treatment. CONCLUSION These results suggested that allicin may play a protective role in diabetic nephropathy via the TGF-β1/ERK pathway in diabetic rats. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Hong Huang
- Department of Endocrinology, Zhejiang Hospital, Hangzhou, 310013, China
| | - Ying Jiang
- Department of Endocrinology, Zhejiang Hospital, Hangzhou, 310013, China
| | - Genxiang Mao
- Zhejiang Provincial Key Lab of Geriatrics, Zhejiang Hospital, Hangzhou, 310013, China
| | - Fang Yuan
- Department of Endocrinology, Zhejiang Hospital, Hangzhou, 310013, China
| | - Hexin Zheng
- Department of Endocrinology, Zhejiang Hospital, Hangzhou, 310013, China
| | - Yuan Ruan
- Department of Endocrinology, Zhejiang Hospital, Hangzhou, 310013, China
| | - Tianfeng Wu
- Department of Endocrinology, Zhejiang Hospital, Hangzhou, 310013, China
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Filipović NR, Elshaflu H, Grubišić S, Jovanović LS, Rodić M, Novaković I, Malešević A, Djordjević IS, Li H, Šojić N, Marinković A, Todorović TR. Co(iii) complexes of (1,3-selenazol-2-yl)hydrazones and their sulphur analogues. Dalton Trans 2017; 46:2910-2924. [PMID: 28197616 DOI: 10.1039/c6dt04785h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The first Co(iii) complexes with (1,3-selenazol-2-yl)hydrazones as an unexplored class of ligands were prepared and characterized by NMR spectroscopy and X-ray diffraction analysis. The novel ligands act as NNN tridentate chelators forming octahedral Co(iii) complexes. The impact of structural changes on ligands' periphery as well as that of isosteric replacement of sulphur with selenium on the electrochemical and electronic absorption features of complexes are explored. To support the experimental data, density functional theory (DFT) calculations were also conducted. Theoretical NMR chemical shifts, the relative energies and natural bond orbital (NBO) analysis are calculated within the DFT approach, while the singlet excited state energies and HOMO-LUMO energy gap were calculated with time-dependent density functional theory (TD-DFT). The electrophilic f- and nucleophilic f+ Fukui functions are well adapted to find the electrophile and nucleophile centres in the molecules. Both (1,3-selenazol-2-yl)- and (1,3-thiazol-2-yl)hydrazone Co(iii) complexes showed potent antimicrobial and antioxidant activity. A significant difference among them was a smaller cytotoxicity of selenium compounds.
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Affiliation(s)
- Nenad R Filipović
- Department of Chemistry and Biochemistry, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Belgrade, Serbia
| | - Hana Elshaflu
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, Serbia
| | - Sonja Grubišić
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, Belgrade, Serbia
| | - Ljiljana S Jovanović
- Department of Chemistry, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 4, Novi Sad, Serbia
| | - Marko Rodić
- Department of Chemistry, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 4, Novi Sad, Serbia
| | - Irena Novaković
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, Belgrade, Serbia
| | - Aleksandar Malešević
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, Serbia.
| | - Ivana S Djordjević
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, Belgrade, Serbia
| | - Haidong Li
- University of Bordeaux, Bordeaux INP, ENSCBP, Institut des Sciences Moléculaires, CNRS UMR 5255, 16 Avenue Pey-Berland, 33607 Pessac, France
| | - Nešo Šojić
- University of Bordeaux, Bordeaux INP, ENSCBP, Institut des Sciences Moléculaires, CNRS UMR 5255, 16 Avenue Pey-Berland, 33607 Pessac, France
| | - Aleksandar Marinković
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade, Serbia
| | - Tamara R Todorović
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, Serbia.
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Shigemi Z, Manabe K, Hara N, Baba Y, Hosokawa K, Kagawa H, Watanabe T, Fujimuro M. Methylseleninic acid and sodium selenite induce severe ER stress and subsequent apoptosis through UPR activation in PEL cells. Chem Biol Interact 2017; 266:28-37. [PMID: 28161410 DOI: 10.1016/j.cbi.2017.01.027] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 10/26/2016] [Accepted: 01/30/2017] [Indexed: 11/15/2022]
Abstract
Selenium compounds such as methylseleninic acid (MSA) and sodium selenite (SS) have been widely evaluated as potential anti-cancer agents in the clinical setting. Primary effusion lymphoma (PEL) is a non-Hodgkin's B-cell lymphoma, associated with immunosuppressed individuals, such as post-transplant or AIDS patients. Kaposi's sarcoma-associated herpesvirus (KSHV) is the causative agent of PEL and Kaposi's sarcoma. Here, we found that MSA and SS markedly inhibited the growth of PEL cells compared with KSHV-uninfected B cells. MSA and SS caused ER stress, inducing the unfolded protein response (UPR) pathway in PEL cells that resulted in pro-apoptotic UPR, and finally apoptosis. The expression of UPR-related molecules (GRP78 and GADD34) and pro-apoptotic UPR molecules (CHOP, Bim, or Puma) were augmented in PEL cells treated with MSA or SS. In addition, these compounds induced the activation of caspase-4, an ER stress specific caspase, as well as caspase-3,-7, and -9 in PEL cells. We confirmed that thapsigargin which is an inducer of ER stress, dramatically decreased the viability of PEL cells, compared with KSHV-uninfected Ramos cells. We also investigated whether MSA or SS caused oxidization of cellular proteins in PEL cells. MSA and SS increased the levels of oxidative proteins in PEL cells, and the anti-oxidant agent (N-acetyl-l-cysteine) restored cell viability and suppressed caspase-7 activation in PEL cells treated with MSA or SS. Finally, we confirmed that MSA and SS induced neither lytic replication nor viral production in PEL cells. Taken together, MSA and SS could serve as lead compounds for the development of novel and effective drugs against PEL without the risk of de novo KSHV production.
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Affiliation(s)
- Zenpei Shigemi
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-Shichonocho 1, Yamashinaku, Kyoto 607-8412, Japan
| | - Kazuki Manabe
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-Shichonocho 1, Yamashinaku, Kyoto 607-8412, Japan
| | - Naoko Hara
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-Shichonocho 1, Yamashinaku, Kyoto 607-8412, Japan
| | - Yusuke Baba
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-Shichonocho 1, Yamashinaku, Kyoto 607-8412, Japan
| | - Kohei Hosokawa
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-Shichonocho 1, Yamashinaku, Kyoto 607-8412, Japan
| | - Hiroki Kagawa
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-Shichonocho 1, Yamashinaku, Kyoto 607-8412, Japan
| | - Tadashi Watanabe
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-Shichonocho 1, Yamashinaku, Kyoto 607-8412, Japan
| | - Masahiro Fujimuro
- Department of Cell Biology, Kyoto Pharmaceutical University, Misasagi-Shichonocho 1, Yamashinaku, Kyoto 607-8412, Japan.
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Tobe T, Ueda K, Aoki A, Okamoto Y, Kojima N, Jinno H. Selenium uptake through cystine transporter mediated by glutathione conjugation. J Toxicol Sci 2017; 42:85-91. [PMID: 28070112 DOI: 10.2131/jts.42.85] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Selenium (Se) is an essential trace element and is regarded as a protective agent against cancer. In particular, antioxidant effects of selenoenzymes contribute to cancer prevention. Se can also produce reactive oxygen species and, thereby, exert cancer-selective cytotoxicity. Selenodiglutathione (SDG) is a primary Se metabolite conjugated to two glutathione (GSH) moieties. SDG increases intracellular Se accumulation and is more toxic than selenous acid (H2SeO3), but the mechanisms for importing Se compounds into cells are not fully understood. Here, we propose a novel mechanism for importing Se, in the form of SDG. Cellular intake of Se compounds was assessed based on Se accumulation, as detected by ICP-MS. SDG incorporation was decreased in the presence of thiols (GSH, cysteine or their oxidized forms, GSSG and cystine), whereas H2SeO3 uptake was increased by addition of GSH or cysteine. Cellular SDG uptake was decreased by pretreatment with specific inhibitors against gamma-glutamyl transpeptidase (GGT) or the cystine/glutamate antiporter (system xc-). Furthermore, siRNA against xCT, which is the light chain component of system xc-, significantly decreased SDG incorporation. These data suggest an involvement of SDG in Se incorporation, with SDG processed at the cell surface by GGT, leading to formation of selenodicysteine which, in turn, is likely to be imported via xCT. Because GGT and xCT are highly expressed in cancer cells, these mechanisms mediated by the cystine transporter might underlie the cancer-selective toxicity of Se. In addition, the system described in our study appears to represent a physiological transport mechanism for the essential element Se.
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Huang H, Zheng F, Dong X, Wu F, Wu T, Li H. Allicin inhibits tubular epithelial-myofibroblast transdifferentiation under high glucose conditions in vitro. Exp Ther Med 2016; 13:254-262. [PMID: 28123498 DOI: 10.3892/etm.2016.3913] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 05/04/2016] [Indexed: 12/16/2022] Open
Abstract
Previous studies have suggested that tubular epithelial-mesenchymal transition (EMT) is an important event in renal tubulointerstitial fibrosis, which is a clinical characteristic of diabetic nephropathy. The present study aimed to investigate the effect of allicin, the major biological active component of garlic, on the EMT of a human renal proximal tubular epithelial cell line (HK-2) cultured under high glucose concentrations. HK-2 cells were exposed for 48 h to 5.5 or 25 mmol/l D-glucose, 25 mmol/l D-glucose plus allicin (2.5, 5, 10 or 20 µg/ml) or 25 mmol/l D-glucose plus 20 µmol/l PD98059, a selective inhibitor of the mitogen activated protein kinase/extracellular signal-regulated kinase (ERK) signaling pathway. The EMT of HK-2 cells was assessed by analyzing the protein expression of E-cadherin, α-smooth muscle actin (α-SMA), vimentin and collagen I via immunocytochemistry. In addition, reverse transcription-quantitative polymerase chain reaction and western blotting were used to detect the expression levels of transforming growth factor (TGF)-β1 and phosphorylated (p)-ERK1/2. Marked morphological changes were observed in HK-2 cells cultured under high glucose conditions, and these changes were abrogated by simultaneous incubation with allicin and PD98059. The expression levels of α-SMA, vimentin and collagen I were significantly increased in HK-2 cells cultured under high glucose conditions, as compared with those cultured under normal glucose conditions (P<0.01). Conversely, the expression levels of E-cadherin were significantly decreased upon stimulation with high glucose (P<0.01). Furthermore, the expression levels of TGF-β1 and p-ERK1/2 were significantly upregulated in HK-2 cells cultured under high glucose conditions, as compared with those cultured under normal glucose conditions (P<0.05). Allicin partially reversed the high-glucose-induced increase in α-SMA, vimentin and collagen I expression (P<0.01 at 20 µg/ml), increased the expression of E-cadherin, and significantly downregulated the high glucose-induced expression of TGF-β1 and p-ERK1/2 in a dose-dependent manner (P<0.05). The results of the present study suggested that high glucose concentrations induced the EMT of HK-2 cells, and that allicin was able to inhibit the EMT, potentially via regulation of the ERK1/2-TGF-β1 signaling pathway.
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Affiliation(s)
- Hong Huang
- Department of Endocrinology, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
| | - Fenping Zheng
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Xuehong Dong
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Fang Wu
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Tianfeng Wu
- Department of Endocrinology, Zhejiang Hospital, Hangzhou, Zhejiang 310013, P.R. China
| | - Hong Li
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
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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.
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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.
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Thamilselvan V, Menon M, Thamilselvan S. Combination of carmustine and selenite effectively inhibits tumor growth by targeting androgen receptor, androgen receptor-variants, and Akt in preclinical models: New hope for patients with castration resistant prostate cancer. Int J Cancer 2016; 139:1632-47. [PMID: 27198552 DOI: 10.1002/ijc.30189] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 04/28/2016] [Accepted: 05/03/2016] [Indexed: 01/12/2023]
Abstract
Despite established androgen receptor (AR) antagonists, AR/AR-variants signaling remain a major obstacle for the successful treatment of castration resistant prostate cancer (CRPC). In addition, CRPC cells adapt to survive via AR-independent pathways to escape next generation therapies. Therefore, there is an urgent need for drugs that can target these signaling pathways in CRPC. In this study, we sought to determine whether carmustine and selenite in combination could induce apoptosis and inhibit growth of CRPC in-vitro and in-vivo. CRPC (22Rv1, VCaP, and PC-3) cell lines in culture and xenograft mouse were used. Combination of carmustine and selenite treatment significantly increased reactive oxygen species, apoptosis and growth inhibition in CRPC cells with down regulation of anti-apoptotic (Bcl-2 and Mcl-1) and proliferative proteins (c-Myc and cyclin-D1). This effect was associated with complete reduction of AR/AR-variants, AR-V7, PSA and significant induction of p27Kip1. Combination treatment substantially abolished phospho-Akt, phospho-GSK-3β, and anchorage-independent growth in AR-positive and AR-negative cells. Consistent with in-vitro results, combination treatment effectively induced apoptosis and completely inhibited xenograft tumor growth and markedly reduced AR/AR-variants, AR-V7, PSA, and Bcl-2 in xenograft tumors without causing genotoxicity in host mice. Individual agent treatment showed only partial effect. The combination treatment showed a significant synergistic effect. The present study is the first to demonstrate that the combination of carmustine and selenite treatment completely suppressed CRPC tumor growth by reducing AR/AR-variants and Akt signaling. Our findings suggest that the combination of carmustine and selenite could constitute a promising next-generation therapy for successful treatment of patients with CRPC.
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Affiliation(s)
| | - Mani Menon
- Vattikuti Urology Institute, Henry Ford Health System, Detroit, MI
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45
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Studies on oxidants and antioxidants with a brief glance at their relevance to the immune system. Life Sci 2016; 146:163-73. [PMID: 26792059 DOI: 10.1016/j.lfs.2016.01.014] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 01/08/2016] [Accepted: 01/09/2016] [Indexed: 12/16/2022]
Abstract
Free radical generation occurs continuously within cells as a consequence of common metabolic processes. However, in high concentrations, whether from endogenous or exogenous sources, free radicals can lead to oxidative stress; a harmful process that cause serious damages to all biomolecules in our body hence impairs cell functions and even results in cell death and diseased states. Oxidative injuries accumulate over time and participate in cancer development, cardiovascular and neurodegenerative disorders as well as aging. Nature has bestowed the human body with a complex web of antioxidant defense system including enzymatic antioxidants like glutathione peroxidase and glutathione reductase, catalase and superoxide dismutase as well as non-enzymatic antioxidants such as thiol antioxidants, melatonin, coenzyme Q, and metal chelating proteins, which are efficient enough to fight against excessive free radicals. Also, nutrient antioxidants such as vitamin C, vitamin E, carotenoids, polyphenols, and trace elements are known to have high antioxidant potency to assist in minimizing harmful effects of reactive species. The immune system is also extremely vulnerable to oxidant and antioxidant balance as uncontrolled free radical production can impair its function and defense mechanism. The present paper reviews the ways by which free radicals form in the body and promote tissue damage, as well as the role of the antioxidants defense mechanisms. Finally, we will have a brief glance at oxidants and antioxidants relevance to the immune system.
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46
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Kim Y, Choi M, Manjare ST, Jon S, Churchill DG. Diselenide-based probe for the selective imaging of hypochlorite in living cancer cells. RSC Adv 2016. [DOI: 10.1039/c6ra04257k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
A non-traditional and robust probe skeleton was derivatized for chemosensing applications to investigate a potential novel mode of hypochlorite detection.
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Affiliation(s)
- Youngsam Kim
- Molecular Logic Gate Laboratory
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
| | - Minsuk Choi
- Department of Biological Sciences
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
| | | | - Sangyong Jon
- Department of Biological Sciences
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
| | - David G. Churchill
- Molecular Logic Gate Laboratory
- Department of Chemistry
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon
- Republic of Korea
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47
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Liao JH, Wu TH, Chen MY, Chen WT, Lu SY, Wang YH, Wang SP, Hsu YM, Huang YS, Huang ZY, Lin YC, Chang CM, Huang FY, Wu SH. The Comparative Studies of Binding Activity of Curcumin and Didemethylated Curcumin with Selenite: Hydrogen Bonding vs Acid-Base Interactions. Sci Rep 2015; 5:17614. [PMID: 26635113 PMCID: PMC4669449 DOI: 10.1038/srep17614] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 11/02/2015] [Indexed: 01/07/2023] Open
Abstract
In this report, the in vitro relative capabilities of curcumin (CCM) and didemethylated curcumin (DCCM) in preventing the selenite-induced crystallin aggregation were investigated by turbidity tests and isothermal titration calorimetry (ITC). DCCM showed better activity than CCM. The conformers of CCM/SeO3(2-) and DCCM/SeO3(2-) complexes were optimized by molecular orbital calculations. Results reveal that the selenite anion surrounded by CCM through the H-bonding between CCM and selenite, which is also observed via IR and NMR studied. For DCCM, the primary driving force is the formation of an acid-base adduct with selenite showing that the phenolic OH group of DCCM was responsible for forming major conformer of DCCM. The formation mechanisms of selenite complexes with CCM or DCCM explain why DCCM has greater activity than CCM in extenuating the toxicity of selenite as to prevent selenite-induced lens protein aggregation.
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Affiliation(s)
- Jiahn-Haur Liao
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Tzu-Hua Wu
- Department of Clinical Pharmacy, School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan
| | - Ming-Yi Chen
- General Education Center, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Wei-Ting Chen
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
| | - Shou-Yun Lu
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
| | - Yi-Hsuan Wang
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
| | - Shao-Pin Wang
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
| | - Yen-Min Hsu
- Institute of Biochemical Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Yi-Shiang Huang
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan
- Department of Clinical Pharmacy, School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei 110, Taiwan
| | - Zih-You Huang
- Institute of Biochemical Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Yu-Ching Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan
| | - Ching-Ming Chang
- Institute of Biochemical Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Fu-Yung Huang
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
| | - Shih-Hsiung Wu
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan
- Institute of Biochemical Sciences, National Taiwan University, Taipei 10617, Taiwan
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48
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Chen W, Li Y, Yang S, Yue L, Jiang Q, Xia W. Synthesis and antioxidant properties of chitosan and carboxymethyl chitosan-stabilized selenium nanoparticles. Carbohydr Polym 2015; 132:574-81. [PMID: 26256384 DOI: 10.1016/j.carbpol.2015.06.064] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 06/08/2015] [Accepted: 06/18/2015] [Indexed: 11/25/2022]
Abstract
Monodispersible selenium nanoparticles (SeNPs) were synthesized by using chitosan (CS) and carboxymethyl chitosan (CCS) as the stabilizer and capping agent using a facile synthetic approach. The structure, size, morphology and antioxidant activity of the nanocomposites were characterized by transmission electron microscopy (TEM), Ultraviolet-visible spectroscopy (UV-vis), Dynamic Light Scattering (DLS), Fourier transform infrared (FTIR), Thermogravimetric analysis (TGA). The results revealed that the monodispersible SeNPs (mean particle size of about 50 nm) were ligated with CS and CCS to form nanocomposites in aqueous solution for at least 30 days, and for 120 days the nanoparticles increased to 180 nm or so in size. The DPPH scavenging ability of CS-SeNPs was higher than that of CCS-SeNPs, and could reach 93.5% at a concentration of 0.6 mmol/L. Moreover, SeNPs, CS-SeNPs and CCS-SeNPs exhibited a higher ABTS scavenging ability in comparison to Na2SeO3.
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Affiliation(s)
- Wanwen Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi 214122 Jiangsu, People's Republic of China
| | - Yanfang Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi 214122 Jiangsu, People's Republic of China
| | - Shuo Yang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi 214122 Jiangsu, People's Republic of China
| | - Lin Yue
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi 214122 Jiangsu, People's Republic of China.
| | - Qixing Jiang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi 214122 Jiangsu, People's Republic of China
| | - Wenshui Xia
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi 214122 Jiangsu, People's Republic of China
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Zimmerman MT, Bayse CA, Ramoutar RR, Brumaghim JL. Sulfur and selenium antioxidants: challenging radical scavenging mechanisms and developing structure-activity relationships based on metal binding. J Inorg Biochem 2014; 145:30-40. [PMID: 25600984 DOI: 10.1016/j.jinorgbio.2014.12.020] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 12/17/2014] [Accepted: 12/19/2014] [Indexed: 11/30/2022]
Abstract
Because sulfur and selenium antioxidants can prevent oxidative damage, numerous animal and clinical trials have investigated the ability of these compounds to prevent the oxidative stress that is an underlying cause of cardiovascular disease, Alzheimer's disease, and cancer, among others. One of the most common sources of oxidative damage is metal-generated hydroxyl radical; however, very little research has focused on determining the metal-binding abilities and structural attributes that affect oxidative damage prevention by sulfur and selenium compounds. In this review, we describe our ongoing investigations into sulfur and selenium antioxidant prevention of iron- and copper-mediated oxidative DNA damage. We determined that many sulfur and selenium compounds inhibit Cu(I)-mediated DNA damage and that DNA damage prevention varies dramatically when Fe(II) is used in place of Cu(I) to generate hydroxyl radical. Oxidation potentials of the sulfur or selenium compounds do not correlate with their ability to prevent DNA damage, highlighting the importance of metal coordination rather than reactive oxygen species scavenging as an antioxidant mechanism. Additional gel electrophoresis, mass spectrometry, and UV-visible studies confirmed sulfur and selenium antioxidant binding to Cu(I) and Fe(II). Ultimately, our studies established that both the hydroxyl-radical-generating metal ion and the chemical environment of the sulfur or selenium significantly affect DNA damage prevention and that metal coordination is an essential mechanism for these antioxidants.
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Affiliation(s)
| | - Craig A Bayse
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, VA 23529, USA
| | - Ria R Ramoutar
- Department of Chemistry, Clemson University, Clemson, SC 29634-0973, USA
| | - Julia L Brumaghim
- Department of Chemistry, Clemson University, Clemson, SC 29634-0973, USA.
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50
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Anti-inflammatory potential of newly synthesized 4-[(butylsulfinyl)methyl]-1,2-benzenediol in lipopolysaccharide-stimulated BV2 microglia. Molecules 2014; 19:16609-23. [PMID: 25322283 PMCID: PMC6270807 DOI: 10.3390/molecules191016609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 10/04/2014] [Accepted: 10/08/2014] [Indexed: 01/08/2023] Open
Abstract
In this study, we investigated the anti-inflammatory effects of newly synthesized 4-[(butylsulfinyl)methyl]-1,2-benzenediol (SMBD) in lipopolysaccharide (LPS)-stimulated BV2 microglia and the subsequent signaling events. Following stimulation with LPS, elevated production of nitric oxide (NO) and prostaglandin E2 (PGE2) was detected in BV2 cells; however, SMBD pretreatment inhibited the production of NO and PGE2 through suppressing gene expression of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2), respectively, at non-toxic concentrations. LPS-stimulated gene expression and production of interleukin (IL)-1β and tumor necrosis factor (TNF)-α were also significantly reduced by SMBD. The anti-inflammatory effects of SMBD were associated with suppression of LPS-induced nuclear translocation of nuclear factor-kappa B (NF-κB), and phosphorylation of mitogen-activated protein kinases (MAPKs) and Akt, a phosphatidylinositol 3-kinase (PI3K) downstream effector. Therefore, the present results demonstrate that SMBD down-regulates inflammatory gene expression by inhibiting the activation of NF-κB through interference with the activation of MAPKs and PI3K/Akt signaling. Taken together, our data suggest that SMBD may have potential to be developed into an effective anti-inflammatory agent.
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