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Parant F, Mure F, Maurin J, Beauvilliers L, Chorfa C, El Jamali C, Ohlmann T, Chavatte L. Selenium Discrepancies in Fetal Bovine Serum: Impact on Cellular Selenoprotein Expression. Int J Mol Sci 2024; 25:7261. [PMID: 39000368 PMCID: PMC11242189 DOI: 10.3390/ijms25137261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 06/19/2024] [Accepted: 06/27/2024] [Indexed: 07/16/2024] Open
Abstract
Selenium is an essential trace element in our diet, crucial for the composition of human selenoproteins, which include 25 genes such as glutathione peroxidases and thioredoxin reductases. The regulation of the selenoproteome primarily hinges on the bioavailability of selenium, either from dietary sources or cell culture media. This selenium-dependent control follows a specific hierarchy, with "housekeeping" selenoproteins maintaining constant expression while "stress-regulated" counterparts respond to selenium level fluctuations. This study investigates the variability in fetal bovine serum (FBS) selenium concentrations among commercial batches and its effects on the expression of specific stress-related cellular selenoproteins. Despite the limitations of our study, which exclusively used HEK293 cells and focused on a subset of selenoproteins, our findings highlight the substantial impact of serum selenium levels on selenoprotein expression, particularly for GPX1 and GPX4. The luciferase reporter assay emerged as a sensitive and precise method for evaluating selenium levels in cell culture environments. While not exhaustive, this analysis provides valuable insights into selenium-mediated selenoprotein regulation, emphasizing the importance of serum composition in cellular responses and offering guidance for researchers in the selenoprotein field.
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Affiliation(s)
- François Parant
- Service de Biochimie et Biologie Moléculaire, Laboratoire de Biologie Médicale Multi-Sites (LBMMS), Hôpital Lyon-Sud-Hospices Civils de Lyon, 69495 Pierre-Bénite, France
| | - Fabrice Mure
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Unité U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France
- Division Recherche, Université Claude Bernard Lyon 1 (UCBL1), 69008 Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche 5308 (UMR5308), 69007 Lyon, France
| | - Julien Maurin
- Service de Biochimie et Biologie Moléculaire, Laboratoire de Biologie Médicale Multi-Sites (LBMMS), Hôpital Lyon-Sud-Hospices Civils de Lyon, 69495 Pierre-Bénite, France
| | - Léana Beauvilliers
- Service de Biochimie et Biologie Moléculaire, Laboratoire de Biologie Médicale Multi-Sites (LBMMS), Hôpital Lyon-Sud-Hospices Civils de Lyon, 69495 Pierre-Bénite, France
| | - Chaïma Chorfa
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Unité U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France
- Division Recherche, Université Claude Bernard Lyon 1 (UCBL1), 69008 Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche 5308 (UMR5308), 69007 Lyon, France
| | - Chaymae El Jamali
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Unité U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France
- Division Recherche, Université Claude Bernard Lyon 1 (UCBL1), 69008 Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche 5308 (UMR5308), 69007 Lyon, France
| | - Théophile Ohlmann
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Unité U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France
- Division Recherche, Université Claude Bernard Lyon 1 (UCBL1), 69008 Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche 5308 (UMR5308), 69007 Lyon, France
| | - Laurent Chavatte
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), Unité U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France
- Division Recherche, Université Claude Bernard Lyon 1 (UCBL1), 69008 Lyon, France
- Centre National de la Recherche Scientifique (CNRS), Unité Mixte de Recherche 5308 (UMR5308), 69007 Lyon, France
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Hoffman KS, Chung CZ, Mukai T, Krahn N, Jiang HK, Balasuriya N, O'Donoghue P, Söll D. Recoding UAG to selenocysteine in Saccharomyces cerevisiae. RNA (NEW YORK, N.Y.) 2023; 29:1400-1410. [PMID: 37279998 PMCID: PMC10573291 DOI: 10.1261/rna.079658.123] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/16/2023] [Indexed: 06/08/2023]
Abstract
Unique chemical and physical properties are introduced by inserting selenocysteine (Sec) at specific sites within proteins. Recombinant and facile production of eukaryotic selenoproteins would benefit from a yeast expression system; however, the selenoprotein biosynthetic pathway was lost in the evolution of the kingdom Fungi as it diverged from its eukaryotic relatives. Based on our previous development of efficient selenoprotein production in bacteria, we designed a novel Sec biosynthesis pathway in Saccharomyces cerevisiae using Aeromonas salmonicida translation components. S. cerevisiae tRNASer was mutated to resemble A. salmonicida tRNASec to allow recognition by S. cerevisiae seryl-tRNA synthetase as well as A. salmonicida selenocysteine synthase (SelA) and selenophosphate synthetase (SelD). Expression of these Sec pathway components was then combined with metabolic engineering of yeast to enable the production of active methionine sulfate reductase enzyme containing genetically encoded Sec. Our report is the first demonstration that yeast is capable of selenoprotein production by site-specific incorporation of Sec.
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Affiliation(s)
- Kyle S Hoffman
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06511, USA
| | - Christina Z Chung
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06511, USA
| | - Takahito Mukai
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06511, USA
| | - Natalie Krahn
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06511, USA
| | - Han-Kai Jiang
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06511, USA
| | - Nileeka Balasuriya
- Department of Biochemistry, The University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Patrick O'Donoghue
- Department of Biochemistry, The University of Western Ontario, London, Ontario N6A 3K7, Canada
- Department of Chemistry, The University of Western Ontario, London, Ontario N6A 3K7, Canada
| | - Dieter Söll
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06511, USA
- Department of Chemistry, Yale University, New Haven, Connecticut 06511, USA
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3
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Vindry C, Guillin O, Wolff P, Marie P, Mortreux F, Mangeot P, Ohlmann T, Chavatte L. A homozygous mutation in the human selenocysteine tRNA gene impairs UGA recoding activity and selenoproteome regulation by selenium. Nucleic Acids Res 2023; 51:7580-7601. [PMID: 37254812 PMCID: PMC10415148 DOI: 10.1093/nar/gkad482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 05/04/2023] [Accepted: 05/22/2023] [Indexed: 06/01/2023] Open
Abstract
The selenocysteine (Sec) tRNA (tRNA[Ser]Sec) governs Sec insertion into selenoproteins by the recoding of a UGA codon, typically used as a stop codon. A homozygous point mutation (C65G) in the human tRNA[Ser]Sec acceptor arm has been reported by two independent groups and was associated with symptoms such as thyroid dysfunction and low blood selenium levels; however, the extent of altered selenoprotein synthesis resulting from this mutation has yet to be comprehensively investigated. In this study, we used CRISPR/Cas9 technology to engineer homozygous and heterozygous mutant human cells, which we then compared with the parental cell lines. This C65G mutation affected many aspects of tRNA[Ser]Sec integrity and activity. Firstly, the expression level of tRNA[Ser]Sec was significantly reduced due to an altered recruitment of RNA polymerase III at the promoter. Secondly, selenoprotein expression was strongly altered, but, more surprisingly, it was no longer sensitive to selenium supplementation. Mass spectrometry analyses revealed a tRNA isoform with unmodified wobble nucleotide U34 in mutant cells that correlated with reduced UGA recoding activities. Overall, this study demonstrates the pleiotropic effect of a single C65G mutation on both tRNA phenotype and selenoproteome expression.
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Affiliation(s)
- Caroline Vindry
- CIRI, Centre International de Recherche en Infectiologie, 69007 Lyon, France
- INSERM U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, Lyon, France
- Université Lyon 1, Lyon, France
- CNRS/ENS/UCBL1 UMR5308, 69007 Lyon, France
| | - Olivia Guillin
- CIRI, Centre International de Recherche en Infectiologie, 69007 Lyon, France
- INSERM U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, Lyon, France
- Université Lyon 1, Lyon, France
- CNRS/ENS/UCBL1 UMR5308, 69007 Lyon, France
| | - Philippe Wolff
- Architecture et Réactivité de l’ARN, Institut de Biologie Moléculaire et Cellulaire du CNRS, Université de Strasbourg, F-67084 Strasbourg, France
| | - Paul Marie
- Ecole Normale Supérieure de Lyon, Lyon, France
- Université Lyon 1, Lyon, France
- LBMC, Laboratoire de Biologie et Modélisation de la Cellule, 69007 Lyon, France
- CNRS/ENS/UCBL1 UMR5239, 69007 Lyon, France
- INSERM U1210, 69007 Lyon, France
| | - Franck Mortreux
- Ecole Normale Supérieure de Lyon, Lyon, France
- Université Lyon 1, Lyon, France
- LBMC, Laboratoire de Biologie et Modélisation de la Cellule, 69007 Lyon, France
- CNRS/ENS/UCBL1 UMR5239, 69007 Lyon, France
- INSERM U1210, 69007 Lyon, France
| | - Philippe E Mangeot
- CIRI, Centre International de Recherche en Infectiologie, 69007 Lyon, France
- INSERM U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, Lyon, France
- Université Lyon 1, Lyon, France
- CNRS/ENS/UCBL1 UMR5308, 69007 Lyon, France
| | - Théophile Ohlmann
- CIRI, Centre International de Recherche en Infectiologie, 69007 Lyon, France
- INSERM U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, Lyon, France
- Université Lyon 1, Lyon, France
- CNRS/ENS/UCBL1 UMR5308, 69007 Lyon, France
| | - Laurent Chavatte
- CIRI, Centre International de Recherche en Infectiologie, 69007 Lyon, France
- INSERM U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, Lyon, France
- Université Lyon 1, Lyon, France
- CNRS/ENS/UCBL1 UMR5308, 69007 Lyon, France
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Mizuno A, Toyama T, Ichikawa A, Sakai N, Yoshioka Y, Nishito Y, Toga R, Amesaka H, Kaneko T, Arisawa K, Tsutsumi R, Mita Y, Tanaka SI, Noguchi N, Saito Y. An efficient selenium transport pathway of selenoprotein P utilizing a high-affinity ApoER2 receptor variant and being independent of selenocysteine lyase. J Biol Chem 2023; 299:105009. [PMID: 37406814 PMCID: PMC10407282 DOI: 10.1016/j.jbc.2023.105009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 07/07/2023] Open
Abstract
Selenoprotein P (SeP, encoded by the SELENOP gene) is a plasma protein that contains selenium in the form of selenocysteine residues (Sec, a cysteine analog containing selenium instead of sulfur). SeP functions for the transport of selenium to specific tissues in a receptor-dependent manner. Apolipoprotein E receptor 2 (ApoER2) has been identified as a SeP receptor. However, diverse variants of ApoER2 have been reported, and the details of its tissue specificity and the molecular mechanism of its efficiency remain unclear. In the present study, we found that human T lymphoma Jurkat cells have a high ability to utilize selenium via SeP, while this ability was low in human rhabdomyosarcoma cells. We identified an ApoER2 variant with a high affinity for SeP in Jurkat cells. This variant had a dissociation constant value of 0.67 nM and a highly glycosylated O-linked sugar domain. Moreover, the acidification of intracellular vesicles was necessary for selenium transport via SeP in both cell types. In rhabdomyosarcoma cells, SeP underwent proteolytic degradation in lysosomes and transported selenium in a Sec lyase-dependent manner. However, in Jurkat cells, SeP transported selenium in Sec lyase-independent manner. These findings indicate a preferential selenium transport pathway involving SeP and high-affinity ApoER2 in a Sec lyase-independent manner. Herein, we provide a novel dynamic transport pathway for selenium via SeP.
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Affiliation(s)
- Ayako Mizuno
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Takashi Toyama
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Atsuya Ichikawa
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Naoko Sakai
- The Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Japan
| | - Yuya Yoshioka
- The Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Japan
| | - Yukina Nishito
- The Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Japan
| | - Renya Toga
- Laboratory of Biostructural Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Hiroshi Amesaka
- Laboratory of Biostructural Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - Takayuki Kaneko
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Kotoko Arisawa
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Ryouhei Tsutsumi
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yuichiro Mita
- The Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Japan
| | - Shun-Ichi Tanaka
- Laboratory of Biostructural Chemistry, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan; Department of Biotechnology, College of Life Sciences, Ritsumeikan University, Shiga, Japan
| | - Noriko Noguchi
- The Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Japan
| | - Yoshiro Saito
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan; The Systems Life Sciences Laboratory, Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, Japan.
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5
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Chaudière J. Biological and Catalytic Properties of Selenoproteins. Int J Mol Sci 2023; 24:10109. [PMID: 37373256 DOI: 10.3390/ijms241210109] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/06/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Selenocysteine is a catalytic residue at the active site of all selenoenzymes in bacteria and mammals, and it is incorporated into the polypeptide backbone by a co-translational process that relies on the recoding of a UGA termination codon into a serine/selenocysteine codon. The best-characterized selenoproteins from mammalian species and bacteria are discussed with emphasis on their biological function and catalytic mechanisms. A total of 25 genes coding for selenoproteins have been identified in the genome of mammals. Unlike the selenoenzymes of anaerobic bacteria, most mammalian selenoenzymes work as antioxidants and as redox regulators of cell metabolism and functions. Selenoprotein P contains several selenocysteine residues and serves as a selenocysteine reservoir for other selenoproteins in mammals. Although extensively studied, glutathione peroxidases are incompletely understood in terms of local and time-dependent distribution, and regulatory functions. Selenoenzymes take advantage of the nucleophilic reactivity of the selenolate form of selenocysteine. It is used with peroxides and their by-products such as disulfides and sulfoxides, but also with iodine in iodinated phenolic substrates. This results in the formation of Se-X bonds (X = O, S, N, or I) from which a selenenylsulfide intermediate is invariably produced. The initial selenolate group is then recycled by thiol addition. In bacterial glycine reductase and D-proline reductase, an unusual catalytic rupture of selenium-carbon bonds is observed. The exchange of selenium for sulfur in selenoproteins, and information obtained from model reactions, suggest that a generic advantage of selenium compared with sulfur relies on faster kinetics and better reversibility of its oxidation reactions.
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Affiliation(s)
- Jean Chaudière
- CBMN (CNRS, UMR 5248), University of Bordeaux, 33600 Pessac, France
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6
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Biological Activity of Selenium and Its Impact on Human Health. Int J Mol Sci 2023; 24:ijms24032633. [PMID: 36768955 PMCID: PMC9917223 DOI: 10.3390/ijms24032633] [Citation(s) in RCA: 50] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/03/2023] Open
Abstract
Selenium (Se) is a naturally occurring metalloid element essential to human and animal health in trace amounts but it is harmful in excess. Se plays a substantial role in the functioning of the human organism. It is incorporated into selenoproteins, thus supporting antioxidant defense systems. Selenoproteins participate in the metabolism of thyroid hormones, control reproductive functions and exert neuroprotective effects. Among the elements, Se has one of the narrowest ranges between dietary deficiency and toxic levels. Its level of toxicity may depend on chemical form, as inorganic and organic species have distinct biological properties. Over the last decades, optimization of population Se intake for the prevention of diseases related to Se deficiency or excess has been recognized as a pressing issue in modern healthcare worldwide. Low selenium status has been associated with an increased risk of mortality, poor immune function, cognitive decline, and thyroid dysfunction. On the other hand, Se concentrations slightly above its nutritional levels have been shown to have adverse effects on a broad spectrum of neurological functions and to increase the risk of type-2 diabetes. Comprehension of the selenium biochemical pathways under normal physiological conditions is therefore an important issue to elucidate its effect on human diseases. This review gives an overview of the role of Se in human health highlighting the effects of its deficiency and excess in the body. The biological activity of Se, mainly performed through selenoproteins, and its epigenetic effect is discussed. Moreover, a brief overview of selenium phytoremediation and rhizofiltration approaches is reported.
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Barbosa P, Abo El-Magd NF, Hesketh J, Bermano G. The Role of rs713041 Glutathione Peroxidase 4 ( GPX4) Single Nucleotide Polymorphism on Disease Susceptibility in Humans: A Systematic Review and Meta-Analysis. Int J Mol Sci 2022; 23:15762. [PMID: 36555402 PMCID: PMC9778852 DOI: 10.3390/ijms232415762] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022] Open
Abstract
Aim: The single-nucleotide polymorphism (SNP) rs713041, located in the regulatory region, is required to incorporate selenium into the selenoprotein glutathione peroxidase 4 (GPX4) and has been found to have functional consequences. This systematic review aimed to conduct a meta-analysis to determine whether there is an association between GPX4 (rs713041) SNP and the risk of diseases in humans and its correlation with selenium status. Material and methods: A systematic search for English-language manuscripts published between January 1990 and November 2022 was carried out using six databases: CINAHL, Cochrane, Medline, PubMed, Scopus and Web of Science. Odds ratios (ORs) and 95% confidence intervals (CIs) were applied to assess a relationship between GPX4 (rs713041) SNP and the risk of different diseases based on three genetic models. Review Manager 5.4 and Comprehensive Meta-Analysis 4 software were used to perform the meta-analysis and carry out Egger’s test for publication bias. Results: Data from 21 articles were included in the systematic review. Diseases were clustered according to the physiological system affected to understand better the role of GPX4 (rs713041) SNP in developing different diseases. Carriers of the GPX4 (rs173041) T allele were associated with an increased risk of developing colorectal cancer in additive and dominant models (p = 0.02 and p = 0.004, respectively). In addition, carriers of the T allele were associated with an increased risk of developing stroke and hypertension in the additive, dominant and recessive models (p = 0.002, p = 0.004 and p = 0.01, respectively). On the other hand, the GPX4 (rs713041) T allele was associated with a decreased risk of developing pre-eclampsia in the additive, dominant and recessive models (p < 0.0001, p = 0.002 and p = 0.0005, respectively). Moreover, selenium levels presented lower mean values in cancer patients relative to control groups (SMD = −0.39 µg/L; 95% CI: −0.64, −0.14; p = 0.002, I2 = 85%). Conclusion: GPX4 (rs713041) T allele may influence colorectal cancer risk, stroke, hypertension and pre-eclampsia. In addition, low selenium levels may play a role in the increased risk of cancer.
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Affiliation(s)
- Priscila Barbosa
- Centre for Obesity Research and Education (CORE), School of Pharmacy and Life Sciences, Robert Gordon University, Sir Ian Wood Building, Garthdee Road, Aberdeen AB10 7GJ, UK
| | - Nada F. Abo El-Magd
- Biochemistry Department, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - John Hesketh
- Centre for Obesity Research and Education (CORE), School of Pharmacy and Life Sciences, Robert Gordon University, Sir Ian Wood Building, Garthdee Road, Aberdeen AB10 7GJ, UK
| | - Giovanna Bermano
- Centre for Obesity Research and Education (CORE), School of Pharmacy and Life Sciences, Robert Gordon University, Sir Ian Wood Building, Garthdee Road, Aberdeen AB10 7GJ, UK
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8
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Zhang L, Liu J, Dai Z, Wang J, Wu M, Su R, Zhang D. Crosstalk between regulated necrosis and micronutrition, bridged by reactive oxygen species. Front Nutr 2022; 9:1003340. [PMID: 36211509 PMCID: PMC9543034 DOI: 10.3389/fnut.2022.1003340] [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: 07/26/2022] [Accepted: 08/26/2022] [Indexed: 11/15/2022] Open
Abstract
The discovery of regulated necrosis revitalizes the understanding of necrosis from a passive and accidental cell death to a highly coordinated and genetically regulated cell death routine. Since the emergence of RIPK1 (receptor-interacting protein kinase 1)-RIPK3-MLKL (mixed lineage kinase domain-like) axis-mediated necroptosis, various other forms of regulated necrosis, including ferroptosis and pyroptosis, have been described, which enrich the understanding of pathophysiological nature of diseases and provide novel therapeutics. Micronutrients, vitamins, and minerals, position centrally in metabolism, which are required to maintain cellular homeostasis and functions. A steady supply of micronutrients benefits health, whereas either deficiency or excessive amounts of micronutrients are considered harmful and clinically associated with certain diseases, such as cardiovascular disease and neurodegenerative disease. Recent advance reveals that micronutrients are actively involved in the signaling pathways of regulated necrosis. For example, iron-mediated oxidative stress leads to lipid peroxidation, which triggers ferroptotic cell death in cancer cells. In this review, we illustrate the crosstalk between micronutrients and regulated necrosis, and unravel the important roles of micronutrients in the process of regulated necrosis. Meanwhile, we analyze the perspective mechanism of each micronutrient in regulated necrosis, with a particular focus on reactive oxygen species (ROS).
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Affiliation(s)
- Lei Zhang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Agricultural University, Changchun, China
| | - Jinting Liu
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Agricultural University, Changchun, China
| | - Ziyan Dai
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Agricultural University, Changchun, China
| | - Jia Wang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Agricultural University, Changchun, China
| | - Mengyang Wu
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Agricultural University, Changchun, China
| | - Ruicong Su
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Agricultural University, Changchun, China
| | - Di Zhang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, China
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Agricultural University, Changchun, China
- *Correspondence: Di Zhang,
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9
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Yoo TJ, Sup Shim M, Bang J, Kim JH, Jae Lee B. SPS1 deficiency-triggered PGRP-LC and Toll expression controls innate immunity in Drosophila S2 cells. Biol Open 2022; 11:275744. [PMID: 35723425 PMCID: PMC9364239 DOI: 10.1242/bio.059295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 06/14/2022] [Indexed: 12/29/2022] Open
Abstract
Selenophosphate synthetase 1 (SPS1) is an essential gene for the cell growth and embryogenesis in Drosophila melanogaster. We have previously reported that SPS1 deficiency stimulates the expression of genes responsible for the innate immune system, including antimicrobial peptides (AMPs), in Drosophila S2 cells. However, the underlying mechanism has not been elucidated. Here, we investigated the immune pathways that control the SPS1-deficiency-induced expression of AMPs in S2 cells. It was found that the activation of AMP expression is regulated by both immune deficiency (IMD) and the Toll pathway. Double knockdown of the upstream genes of each pathway with SPS1 showed that the peptidoglycan recognition protein-LC (PGRP-LC) and Toll genes are targeted by SPS1 for regulating these pathways. We also found that the IMD and Toll pathway regulate AMP expression by cross-talking. The levels of PGRP-LC and Toll mRNAs were upregulated upon Sps1 knockdown (6.4±0.36 and 3.2±0.45-fold, respectively, n=3). Overexpression of each protein also upregulated AMPs. Interestingly, PGRP-LC overexpression upregulated AMP more than Toll overexpression. These data strongly suggest that SPS1 controls the innate immune system of D. melanogaster through regulating PGRP-LC and Toll expression.
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Affiliation(s)
- Tack-Jin Yoo
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Myoung Sup Shim
- Department of Ophthalmology, Duke Eye Center, Duke Eye Center, Duke University, Durham, NC 27705, USA
| | - Jeyoung Bang
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Jin-Hong Kim
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 08826, Korea
| | - Byeong Jae Lee
- Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 08826, Korea,Author for correspondence ()
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10
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Niu R, Yang Q, Dong Y, Hou Y, Liu G. Selenium metabolism and regulation of immune cells in immune-associated diseases. J Cell Physiol 2022; 237:3449-3464. [PMID: 35788930 DOI: 10.1002/jcp.30824] [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: 05/05/2022] [Revised: 06/01/2022] [Accepted: 06/17/2022] [Indexed: 11/06/2022]
Abstract
Selenium, as one of the essential microelements, plays an irreplaceable role in metabolism regulation and cell survival. Selenium metabolism and regulation have great effects on physiological systems especially the immune system. Therefore, selenium is tightly related to various diseases like cancer. Although recent research works have revealed much about selenium metabolism, the ways in which selenium regulates immune cells' functions and immune-associated diseases still remain much unclear. In this review, we will briefly introduce the regulatory role of selenium metabolism in immune cells and immune-associated diseases.
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Affiliation(s)
- Ruiying Niu
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Qiuli Yang
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Yingjie Dong
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Yueru Hou
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Guangwei Liu
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing, China
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11
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Flohé L, Toppo S, Orian L. The glutathione peroxidase family: Discoveries and mechanism. Free Radic Biol Med 2022; 187:113-122. [PMID: 35580774 DOI: 10.1016/j.freeradbiomed.2022.05.003] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 04/18/2022] [Accepted: 05/04/2022] [Indexed: 12/15/2022]
Abstract
The discoveries leading to our present understanding of the glutathione peroxidases (GPxs) are recalled. The cytosolic GPx, now GPx1, was first described by Mills in 1957 and claimed to depend on selenium by Rotruck et al., in 1972. With the determination of a stoichiometry of one selenium per subunit, GPx1 was established as the first selenoenzyme of vertebrates. In the meantime, the GPxs have grown up to a huge family of enzymes that prevent free radical formation from hydroperoxides and, thus, are antioxidant enzymes, but they are also involved in regulatory processes or synthetic functions. The kinetic mechanism of the selenium-containing GPxs is unusual in neither showing a defined KM nor any substrate saturation. More recently, the reaction mechanism has been investigated by the density functional theory and nuclear magnetic resonance of model compounds mimicking the reaction cycle. The resulting concept sees a selenolate oxidized to a selenenic acid. This very fast reaction results from a concerted dual attack on the hydroperoxide bond, a nucleophilic one by the selenolate and an electrophilic one by a proton that is unstably bound in the reaction center. Postulated intermediates have been identified either in the native enzymes or in model compounds.
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Affiliation(s)
- Leopold Flohé
- Department of Molecular Medicine, University of Padova, Italy; Departamento de Bioquímica, Universidad de la República, Montevideo, Uruguay.
| | - Stefano Toppo
- Department of Molecular Medicine, University of Padova, Italy
| | - Laura Orian
- Department of Chemical Sciences, University of Padova, Italy
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12
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Serrão VHB, Fernandes ADF, Basso LGM, Scortecci JF, Crusca Júnior E, Cornélio ML, de Souza BM, Palma MS, de Oliveira Neto M, Thiemann OH. The Specific Elongation Factor to Selenocysteine Incorporation in Escherichia coli: Unique tRNA Sec Recognition and its Interactions. J Mol Biol 2021; 433:167279. [PMID: 34624294 DOI: 10.1016/j.jmb.2021.167279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 10/20/2022]
Abstract
Several molecular mechanisms are involved in the genetic code interpretation during translation, as codon degeneration for the incorporation of rare amino acids. One mechanism that stands out is selenocysteine (Sec), which requires a specific biosynthesis and incorporation pathway. In Bacteria, the Sec biosynthesis pathway has unique features compared with the eukaryote pathway as Ser to Sec conversion mechanism is accomplished by a homodecameric enzyme (selenocysteine synthase, SelA) followed by the action of an elongation factor (SelB) responsible for delivering the mature Sec-tRNASec into the ribosome by the interaction with the Selenocysteine Insertion Sequence (SECIS). Besides this mechanism being already described, the sequential events for Sec-tRNASec and SECIS specific recognition remain unclear. In this study, we determined the order of events of the interactions between the proteins and RNAs involved in Sec incorporation. Dissociation constants between SelB and the native as well as unacylated-tRNASec variants demonstrated that the acceptor stem and variable arm are essential for SelB recognition. Moreover, our data support the sequence of molecular events where GTP-activated SelB strongly interacts with SelA.tRNASec. Subsequently, SelB.GTP.tRNASec recognizes the mRNA SECIS to deliver the tRNASec to the ribosome. SelB in complex with its specific RNAs were examined using Hydrogen/Deuterium exchange mapping that allowed the determination of the molecular envelopes and its secondary structural variations during the complex assembly. Our results demonstrate the ordering of events in Sec incorporation and contribute to the full comprehension of the tRNASec role in the Sec amino acid biosynthesis, as well as extending the knowledge of synthetic biology and the expansion of the genetic code.
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Affiliation(s)
- Vitor Hugo Balasco Serrão
- Physics Institute of Sao Carlos, University of Sao Paulo, Trabalhador Sao Carlense Av., 400, São Carlos, SP CEP 13566-590, Brazil; Department of Chemistry and Biochemistry, University California - Santa Cruz, 1156 High St., Santa Cruz, CA 95060, United States
| | - Adriano de Freitas Fernandes
- Physics Institute of Sao Carlos, University of Sao Paulo, Trabalhador Sao Carlense Av., 400, São Carlos, SP CEP 13566-590, Brazil
| | - Luis Guilherme Mansor Basso
- Physical Sciences Laboratory, State University of Northern Rio de Janeiro Darcy Ribeiro - UENF, Av. Alberto Lamego, 2000, 28013-602 Campos dos Goytacazes, RJ, Brazil; Faculty of Science, Philosophy and Letters, University of Sao Paulo, CEP 14040-901 Ribeirão Preto, SP, Brazil
| | - Jéssica Fernandes Scortecci
- Physics Institute of Sao Carlos, University of Sao Paulo, Trabalhador Sao Carlense Av., 400, São Carlos, SP CEP 13566-590, Brazil; Department of Biochemistry and Molecular Biology, University of British Columbia, 2350 Health Science Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Edson Crusca Júnior
- Department of Physical Chemistry, Chemistry Institute of the São Paulo State University - UNESP, CEP 14800-900 Araraquara, SP, Brazil
| | - Marinônio Lopes Cornélio
- Physics Department, Institute of Biosciences, Letters and Exact Sciences (IBILCE), São Paulo State University - UNESP, São Jose do Rio Preto, SP, Brazil
| | - Bibiana Monson de Souza
- Department of General and Applied Biology, Institute of Biosciences of Rio Claro, São Paulo State University - UNESP, Rio Claro, SP, Brazil
| | - Mário Sérgio Palma
- Department of General and Applied Biology, Institute of Biosciences of Rio Claro, São Paulo State University - UNESP, Rio Claro, SP, Brazil
| | - Mario de Oliveira Neto
- Bioscience Institute of Universidade Estadual Paulista, Rubião Jr., Botucatu, SP CEP 18618-000, Brazil
| | - Otavio Henrique Thiemann
- Physics Institute of Sao Carlos, University of Sao Paulo, Trabalhador Sao Carlense Av., 400, São Carlos, SP CEP 13566-590, Brazil; Department of Genetics and Evolution, Federal University of São Carlos - UFSCar, 13565-905 São Carlos, SP, Brazil.
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13
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Saito Y. Selenium Transport Mechanism via Selenoprotein P-Its Physiological Role and Related Diseases. Front Nutr 2021; 8:685517. [PMID: 34124127 PMCID: PMC8193087 DOI: 10.3389/fnut.2021.685517] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/07/2021] [Indexed: 02/05/2023] Open
Abstract
Selenoprotein P (SELENOP) is selenium (Se)-containing protein in plasma, which is primarily produced in the liver. The “P” in SELENOP originated from the presence in plasma. SELENOP contains selenocysteine, a cysteine analog containing Se instead of sulfur. SELENOP is a multi-functional protein to reduce phospholipid hydroperoxides and to deliver Se from the liver to other tissues, such as those of the brain and testis, playing a pivotal role in Se metabolism and antioxidative defense. Decrease in SELENOP causes various dysfunctions related to Se deficiency and oxidative stress, while excessive SELENOP causes insulin resistance. This review focuses on the Se transport system of SELENOP, particularly its molecular mechanism and physiological role in Se metabolism. Furthermore, the chemical form of Se and its biological meaning is discussed.
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Affiliation(s)
- Yoshiro Saito
- Laboratory of Molecular Biology and Metabolism, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
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14
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Zhang J, Zhou H, Li H, Ying Z, Liu X. Research progress on separation of selenoproteins/Se-enriched peptides and their physiological activities. Food Funct 2021; 12:1390-1401. [PMID: 33464257 DOI: 10.1039/d0fo02236e] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Selenium (Se) is an essential nutrient associated with several physiological processes in humans and has raised interest because of its antioxidant and immune properties. Se deficiency is related to a variety of diseases and dysfunctions in humans. Due to its higher bioavailability and lower toxicity, organic Se is more recommendable than inorganic Se in the frame of a balanced diet. Se is present in 25 identified selenoproteins that commonly occur in human organisms. As part of selenocysteine (SeC), Se becomes co-translationally incorporated into the polypeptide chain and involved in the regulation of oxidative stress, redox mechanisms, and other crucial cellular processes responsible for innate and adaptive immune responses. This review presents the current information regarding the presence of selenoproteins in the human body, and the separation of selenoproteins and selenopeptides from various plants and their physiological roles in the immune and oxidation systems of humans. In general, the application of selenoproteins and Se-enriched peptides are practically important for the clinical arena, whereby it can be used for exploring new healthy foods.
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Affiliation(s)
- Jian Zhang
- National Soybean Processing Industry Technology Innovation Center, Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, Peoples' Republic of China.
| | - Haochun Zhou
- National Soybean Processing Industry Technology Innovation Center, Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, Peoples' Republic of China.
| | - He Li
- National Soybean Processing Industry Technology Innovation Center, Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, Peoples' Republic of China.
| | - Zhiwei Ying
- National Soybean Processing Industry Technology Innovation Center, Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, Peoples' Republic of China.
| | - Xinqi Liu
- National Soybean Processing Industry Technology Innovation Center, Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing 100048, Peoples' Republic of China.
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15
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Shimada K, Bachman JA, Muhlich JL, Mitchison TJ. shinyDepMap, a tool to identify targetable cancer genes and their functional connections from Cancer Dependency Map data. eLife 2021; 10:57116. [PMID: 33554860 PMCID: PMC7924953 DOI: 10.7554/elife.57116] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 02/06/2021] [Indexed: 12/15/2022] Open
Abstract
Individual cancers rely on distinct essential genes for their survival. The Cancer Dependency Map (DepMap) is an ongoing project to uncover these gene dependencies in hundreds of cancer cell lines. To make this drug discovery resource more accessible to the scientific community, we built an easy-to-use browser, shinyDepMap (https://labsyspharm.shinyapps.io/depmap). shinyDepMap combines CRISPR and shRNA data to determine, for each gene, the growth reduction caused by knockout/knockdown and the selectivity of this effect across cell lines. The tool also clusters genes with similar dependencies, revealing functional relationships. shinyDepMap can be used to (1) predict the efficacy and selectivity of drugs targeting particular genes; (2) identify maximally sensitive cell lines for testing a drug; (3) target hop, that is, navigate from an undruggable protein with the desired selectivity profile, such as an activated oncogene, to more druggable targets with a similar profile; and (4) identify novel pathways driving cancer cell growth and survival.
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Affiliation(s)
- Kenichi Shimada
- Laboratory of Systems Pharmacology and Department of Systems Biology, Harvard Medical School, Boston, United States
| | - John A Bachman
- Laboratory of Systems Pharmacology and Department of Systems Biology, Harvard Medical School, Boston, United States
| | - Jeremy L Muhlich
- Laboratory of Systems Pharmacology and Department of Systems Biology, Harvard Medical School, Boston, United States
| | - Timothy J Mitchison
- Laboratory of Systems Pharmacology and Department of Systems Biology, Harvard Medical School, Boston, United States
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16
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Taguchi T, Kurata M, Onishi I, Kinowaki Y, Sato Y, Shiono S, Ishibashi S, Ikeda M, Yamamoto M, Kitagawa M, Yamamoto K. SECISBP2 is a novel prognostic predictor that regulates selenoproteins in diffuse large B-cell lymphoma. J Transl Med 2021; 101:218-227. [PMID: 33077808 DOI: 10.1038/s41374-020-00495-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 09/18/2020] [Accepted: 09/18/2020] [Indexed: 12/31/2022] Open
Abstract
The overexpression of glutathione peroxidase 4 (GPX4; an enzyme that suppresses peroxidation of membrane phospholipids) is considered a poor prognostic predictor of diffuse large B-cell lymphoma (DLBCL). However, the mechanisms employed in GPX4 overexpression remain unknown. GPX4 is translated as a complete protein upon the binding of SECISBP2 to the selenocysteine insertion sequence (SECIS) on the 3'UTR of GPX4 mRNA. In this study, we investigated the expression of SECISBP2 and its subsequent regulation of GPX4 and TXNRD1 in DLBCL patients. Moreover, we determined the significance of the expression of these selenoproteins in vitro using MD901 and Raji cells. SECISBP2 was positive in 45.5% (75/165 cases) of DLBCL samples. The SECISBP2-positive group was associated with low overall survival (OS) as compared to the SECISBP2-negative group (P = 0.006). Similarly, the SECISBP2 and GPX4 or TXNRD1 double-positive groups (P < 0.001), as well as the SECISBP2, GPX4, and TXNRD1 triple-positive group correlated with poor OS (P = 0.001), suggesting that SECISBP2 may serve as an independent prognostic predictor for DLBCL (hazard ratio (HR): 2.693, P = 0.008). In addition, western blotting showed a decrease in GPX4 and TXNRD1 levels in SECISBP2-knockout (KO) MD901 and Raji cells. Oxidative stress increased the accumulation of reactive oxygen species in SECISBP2-KO cells (MD901; P < 0.001, Raji; P = 0.020), and reduced cell proliferation (MD901; P = 0.001, Raji; P = 0.030), suggesting that SECISBP2-KO suppressed resistance to oxidative stress. Doxorubicin treatment increased the rate of cell death in SECISBP2-KO cells (MD901; P < 0.001, Raji; P = 0.048). Removal of oxidative stress inhibited the altered cell death rate. Taken together, our results suggest that SECISBP2 may be a novel therapeutic target in DLBCL.
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MESH Headings
- Aged
- Cell Line, Tumor
- Female
- Gene Expression Regulation, Neoplastic/genetics
- Gene Knockout Techniques
- Humans
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/metabolism
- Lymphoma, Large B-Cell, Diffuse/mortality
- Male
- Middle Aged
- Oxidative Stress/genetics
- Phospholipid Hydroperoxide Glutathione Peroxidase/genetics
- Phospholipid Hydroperoxide Glutathione Peroxidase/metabolism
- Prognosis
- RNA-Binding Proteins/genetics
- RNA-Binding Proteins/metabolism
- Selenoproteins/genetics
- Selenoproteins/metabolism
- Thioredoxin Reductase 1/genetics
- Thioredoxin Reductase 1/metabolism
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Affiliation(s)
- Towako Taguchi
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Morito Kurata
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Iichiroh Onishi
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Yuko Kinowaki
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Yunosuke Sato
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
- Department of Anesthesiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Sayuri Shiono
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Sachiko Ishibashi
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Masumi Ikeda
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Masahide Yamamoto
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Masanobu Kitagawa
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Kouhei Yamamoto
- Department of Comprehensive Pathology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
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17
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Seale LA, Ogawa-Wong AN, Watanabe LM, Khadka VS, Menor M, Torres DJ, Carlson BA, Hatfield DL, Berry MJ. Adaptive Thermogenesis in a Mouse Model Lacking Selenoprotein Biosynthesis in Brown Adipocytes. Int J Mol Sci 2021; 22:E611. [PMID: 33435397 PMCID: PMC7827413 DOI: 10.3390/ijms22020611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 01/06/2021] [Accepted: 01/06/2021] [Indexed: 12/02/2022] Open
Abstract
Selenoproteins are a class of proteins with the selenium-containing amino acid selenocysteine (Sec) in their primary structure. Sec is incorporated into selenoproteins via recoding of the stop codon UGA, with specific cis and trans factors required during translation to avoid UGA recognition as a stop codon, including a Sec-specific tRNA, tRNA[Ser]Sec, encoded in mice by the gene Trsp. Whole-body deletion of Trsp in mouse is embryonically lethal, while targeted deletion of Trsp in mice has been used to understand the role of selenoproteins in the health and physiology of various tissues. We developed a mouse model with the targeted deletion of Trsp in brown adipocytes (Trspf/f-Ucp1-Cre+/-), a cell type predominant in brown adipose tissue (BAT) controlling energy expenditure via activation of adaptive thermogenesis, mostly using uncoupling protein 1 (Ucp1). At room temperature, Trspf/f-Ucp1-Cre+/- mice maintain oxygen consumption and Ucp1 expression, with male Trspf/f-Ucp1-Cre+/- mice accumulating more triglycerides in BAT than both female Trspf/f-Ucp1-Cre+/- mice or Trspf/f controls. Acute cold exposure neither reduced core body temperature nor changed the expression of selenoprotein iodothyronine deiodinase type II (Dio2), a marker of adaptive thermogenesis, in Trspf/f-Ucp1-Cre+/- mice. Microarray analysis of BAT from Trspf/f-Ucp1-Cre+/- mice revealed glutathione S-transferase alpha 3 (Gsta3) and ELMO domain containing 2 (Elmod2) as the transcripts most affected by the loss of Trsp. Male Trspf/f-Ucp1-Cre+/- mice showed mild hypothyroidism while downregulating thyroid hormone-responsive genes Thrsp and Tshr in their BATs. In summary, modest changes in the BAT of Trspf/f-Ucp1-Cre +/- mice implicate a mild thyroid hormone dysfunction in brown adipocytes.
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Affiliation(s)
- Lucia A. Seale
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96813, USA; (A.N.O.-W.); (L.M.W.); (D.J.T.)
- Pacific Biomedical Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822, USA;
| | - Ashley N. Ogawa-Wong
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96813, USA; (A.N.O.-W.); (L.M.W.); (D.J.T.)
| | - Ligia M. Watanabe
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96813, USA; (A.N.O.-W.); (L.M.W.); (D.J.T.)
| | - Vedbar S. Khadka
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (V.S.K.); (M.M.)
| | - Mark Menor
- Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96822, USA; (V.S.K.); (M.M.)
| | - Daniel J. Torres
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI 96813, USA; (A.N.O.-W.); (L.M.W.); (D.J.T.)
- Pacific Biomedical Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822, USA;
| | - Bradley A. Carlson
- Molecular Biology of Selenium Section, Mouse Genetics Program, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA; (B.A.C.); (D.L.H.)
| | - Dolph L. Hatfield
- Molecular Biology of Selenium Section, Mouse Genetics Program, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA; (B.A.C.); (D.L.H.)
| | - Marla J. Berry
- Pacific Biomedical Research Center, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822, USA;
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18
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Lai H, Nie T, Zhang Y, Chen Y, Tao J, Lin T, Ge T, Li F, Li H. Selenium Deficiency-Induced Damage and Altered Expression of Mitochondrial Biogenesis Markers in the Kidneys of Mice. Biol Trace Elem Res 2021; 199:185-196. [PMID: 32172502 DOI: 10.1007/s12011-020-02112-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/01/2019] [Indexed: 12/29/2022]
Abstract
Previous studies have raised concerns that kidney disease is often closely related to low serum Se levels in patients and that hyposelenemia may increase the vulnerability of patients to complications. However, few studies examining renal injury caused by Se deficiency have been conducted. To determine the effects of a selenium-deficient diet on renal function, a mouse model was fed a selenium-deficient diet (0.02 mg Se/kg) for 20 weeks. Meanwhile, mice in the control group (selenium-adequate) were fed a standard diet (0.18 mg Se/kg). The cellular models were established by lentiviral Trnau1ap-shRNA vectors transfected into mouse podocyte (MPC5) and mouse renal tubular epithelial (TCMK1) cell lines. Significant increases in serum creatinine levels and urinary protein/creatinine ratios were accompanied by increased MDA content in the Se-deficient group compared to the control group. The morphological observations of tissues showed widespread inflammation and ultrastructural changes in the Se-deficient group, such as swollen mitochondria and extensive podocyte fusion and renal tubular microvilli shedding. In addition, the expression of COXIV and cytochrome c was significantly downregulated in the Se-deficient group. Importantly, the mRNA levels of silent mating type information regulation 2 homolog 1 (SIRT1) and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) and the protein levels of SIRT1 were increased in the Se-deficient group compared with the normal control group. Our data indicate that Se deficiency induces renal injury in mice. The elevated oxidative stress caused by Se deficiency may result in mitochondrial damage, which might affect renal function. Moreover, the SIRT1/PGC1α axis likely plays an important role in the compensatory mechanism of mitochondrial dysfunction.
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Affiliation(s)
- Hehuan Lai
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China
| | - Tingting Nie
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China
| | - Yitong Zhang
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China
| | - Ying Chen
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China
| | - Jiaqi Tao
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China
| | - Tingting Lin
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China
| | - Tangdong Ge
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China
| | - Fenglan Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China
| | - Hui Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Baojian Road 157, Nangang District, Harbin City, 150081, Heilongjiang Province, China.
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19
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The Relevance of Selenium Status in Rheumatoid Arthritis. Nutrients 2020; 12:nu12103007. [PMID: 33007934 PMCID: PMC7601319 DOI: 10.3390/nu12103007] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 09/28/2020] [Accepted: 09/29/2020] [Indexed: 12/17/2022] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune and inflammatory disease that can cause joint damage. Among the environmental risk factors, diet plays an important role because it can aggravate or attenuate inflammation. Selenium (Se) is considered an essential trace element since it is a structural component of antioxidant enzymes; however, its concentration can be affected by diet, drugs and genetic polymorphisms. Studies have reported that RA patients have a deficient diet in some food groups that is associated with parameters of disease activity. Furthermore, it has been shown that there is an alteration in serum Se levels in this population. Although some clinical trials have been conducted in the past to analyze the effect of Se supplementation in RA, no significant results were obtained. Contrastingly, experimental studies that have evaluated the effect of novel Se nanoparticles in RA-induced models have shown promising results on the restoration of antioxidant enzyme levels. In particular, glutathione peroxidase (GPx) is an important selenoprotein that could have a modulating effect on inflammation in RA. Considering that RA patients present an inflammatory and oxidative state, the aim of this review is to give an overview of the current knowledge about the relevance of Se status in RA.
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Hariharan S, Dharmaraj S. Selenium and selenoproteins: it's role in regulation of inflammation. Inflammopharmacology 2020; 28:667-695. [PMID: 32144521 PMCID: PMC7222958 DOI: 10.1007/s10787-020-00690-x] [Citation(s) in RCA: 276] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 02/06/2020] [Indexed: 12/22/2022]
Abstract
Abstract Selenium is an essential immunonutrient which holds the human’s metabolic activity with its chemical bonds. The organic forms of selenium naturally present in human body are selenocysteine and selenoproteins. These forms have a unique way of synthesis and translational coding. Selenoproteins act as antioxidant warriors for thyroid regulation, male-fertility enhancement, and anti-inflammatory actions. They also participate indirectly in the mechanism of wound healing as oxidative stress reducers. Glutathione peroxidase (GPX) is the major selenoprotein present in the human body, which assists in the control of excessive production of free radical at the site of inflammation. Other than GPX, other selenoproteins include selenoprotein-S that regulates the inflammatory cytokines and selenoprotein-P that serves as an inducer of homeostasis. Previously, reports were mainly focused on the cellular and molecular mechanism of wound healing with reference to various animal models and cell lines. In this review, the role of selenium and its possible routes in translational decoding of selenocysteine, synthesis of selenoproteins, systemic action of selenoproteins and their indirect assimilation in the process of wound healing are explained in detail. Some of the selenium containing compounds which can acts as cancer preventive and therapeutics are also discussed. These compounds directly or indirectly exhibit antioxidant properties which can sustain the intracellular redox status and these activities protect the healthy cells from reactive oxygen species induced oxidative damage. Although the review covers the importance of selenium/selenoproteins in wound healing process, still some unresolved mystery persists which may be resolved in near future. Graphic abstract ![]()
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Affiliation(s)
- Sneha Hariharan
- Department of Biochemistry, Karpagam Academy of Higher Education, Eachanari Post, Pollachi Main Road, Coimbatore, Tamil Nadu, 641021, India
| | - Selvakumar Dharmaraj
- Department of Biochemistry, Karpagam Academy of Higher Education, Eachanari Post, Pollachi Main Road, Coimbatore, Tamil Nadu, 641021, India.
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Farukh M. Comparative genomic analysis of selenium utilization traits in different marine environments. J Microbiol 2020; 58:113-122. [PMID: 31993987 DOI: 10.1007/s12275-020-9250-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 10/02/2019] [Accepted: 10/31/2019] [Indexed: 11/25/2022]
Abstract
Selenium (Se) is an essential trace element for many organisms, which is required in the biosynthesis of proteins with selenocysteine, tRNAs with selenouridine, and certain enzymes with Se as a cofactor. Recent large-scale metagenomics projects provide a unique opportunity for studying the global trends of Se utilization in marine environments. Here, we analyzed samples from different marine microbial communities, revealed by the Tara Oceans project, to characterize the Se utilization traits. We found that the selenophosphate synthetase gene, which defines the overall Se utilization, and Se utilization traits are present in all samples. Regions with samples rich and poor in Se utilization traits were categorized. From the analysis of environmental factors, the mesopelagic zone and high temperature (> 15°C) of water are favorable, while geographical location has little influence on Se utilization. All Se utilization traits showed a relatively independent occurrence. The taxonomic classification of Se traits shows that most of the sequences corresponding to Se utilization traits belong to the phylum Proteobacteria. Overall, our study provides useful insights into the general features of Se utilization in ocean samples and may help to understand the evolutionary dynamics of Se utilization in different marine environments.
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Affiliation(s)
- Muhammad Farukh
- Department of Biotechnology, School of Life Science and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Hongshan District, Wuhan, 430074, P. R. China.
- Key Laboratory of Molecular Biophysics, Ministry of Education, Wuhan, Hubei, P. R. China.
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Guillin OM, Vindry C, Ohlmann T, Chavatte L. Selenium, Selenoproteins and Viral Infection. Nutrients 2019; 11:nu11092101. [PMID: 31487871 PMCID: PMC6769590 DOI: 10.3390/nu11092101] [Citation(s) in RCA: 255] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/23/2019] [Accepted: 08/27/2019] [Indexed: 02/07/2023] Open
Abstract
Reactive oxygen species (ROS) are frequently produced during viral infections. Generation of these ROS can be both beneficial and detrimental for many cellular functions. When overwhelming the antioxidant defense system, the excess of ROS induces oxidative stress. Viral infections lead to diseases characterized by a broad spectrum of clinical symptoms, with oxidative stress being one of their hallmarks. In many cases, ROS can, in turn, enhance viral replication leading to an amplification loop. Another important parameter for viral replication and pathogenicity is the nutritional status of the host. Viral infection simultaneously increases the demand for micronutrients and causes their loss, which leads to a deficiency that can be compensated by micronutrient supplementation. Among the nutrients implicated in viral infection, selenium (Se) has an important role in antioxidant defense, redox signaling and redox homeostasis. Most of biological activities of selenium is performed through its incorporation as a rare amino acid selenocysteine in the essential family of selenoproteins. Selenium deficiency, which is the main regulator of selenoprotein expression, has been associated with the pathogenicity of several viruses. In addition, several selenoprotein members, including glutathione peroxidases (GPX), thioredoxin reductases (TXNRD) seemed important in different models of viral replication. Finally, the formal identification of viral selenoproteins in the genome of molluscum contagiosum and fowlpox viruses demonstrated the importance of selenoproteins in viral cycle.
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Affiliation(s)
- Olivia M Guillin
- CIRI, Centre International de Recherche en Infectiologie, CIRI, 69007 Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France
- Unité Mixte de Recherche 5308 (UMR5308), Centre national de la recherche scientifique (CNRS), 69007 Lyon, France
| | - Caroline Vindry
- CIRI, Centre International de Recherche en Infectiologie, CIRI, 69007 Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France
- Unité Mixte de Recherche 5308 (UMR5308), Centre national de la recherche scientifique (CNRS), 69007 Lyon, France
| | - Théophile Ohlmann
- CIRI, Centre International de Recherche en Infectiologie, CIRI, 69007 Lyon, France
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France
- Unité Mixte de Recherche 5308 (UMR5308), Centre national de la recherche scientifique (CNRS), 69007 Lyon, France
| | - Laurent Chavatte
- CIRI, Centre International de Recherche en Infectiologie, CIRI, 69007 Lyon, France.
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France.
- Ecole Normale Supérieure de Lyon, 69007 Lyon, France.
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France.
- Unité Mixte de Recherche 5308 (UMR5308), Centre national de la recherche scientifique (CNRS), 69007 Lyon, France.
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Vindry C, Guillin O, Mangeot PE, Ohlmann T, Chavatte L. A Versatile Strategy to Reduce UGA-Selenocysteine Recoding Efficiency of the Ribosome Using CRISPR-Cas9-Viral-Like-Particles Targeting Selenocysteine-tRNA [Ser]Sec Gene. Cells 2019; 8:cells8060574. [PMID: 31212706 PMCID: PMC6627462 DOI: 10.3390/cells8060574] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/07/2019] [Accepted: 06/10/2019] [Indexed: 01/05/2023] Open
Abstract
The translation of selenoprotein mRNAs involves a non-canonical ribosomal event in which an in-frame UGA is recoded as a selenocysteine (Sec) codon instead of being read as a stop codon. The recoding machinery is centered around two dedicated RNA components: The selenocysteine insertion sequence (SECIS) located in the 3′ UTR of the mRNA and the selenocysteine-tRNA (Sec-tRNA[Ser]Sec). This translational UGA-selenocysteine recoding event by the ribosome is a limiting stage of selenoprotein expression. Its efficiency is controlled by the SECIS, the Sec-tRNA[Ser]Sec and their interacting protein partners. In the present work, we used a recently developed CRISPR strategy based on murine leukemia virus-like particles (VLPs) loaded with Cas9-sgRNA ribonucleoproteins to inactivate the Sec-tRNA[Ser]Sec gene in human cell lines. We showed that these CRISPR-Cas9-VLPs were able to induce efficient genome-editing in Hek293, HepG2, HaCaT, HAP1, HeLa, and LNCaP cell lines and this caused a robust reduction of selenoprotein expression. The alteration of selenoprotein expression was the direct consequence of lower levels of Sec-tRNA[Ser]Sec and thus a decrease in translational recoding efficiency of the ribosome. This novel strategy opens many possibilities to study the impact of selenoprotein deficiency in hard-to-transfect cells, since these CRISPR-Cas9-VLPs have a wide tropism.
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Affiliation(s)
- Caroline Vindry
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France.
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France.
- Ecole Normale Supérieure de Lyon, 69342 Lyon, France.
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France.
- Unité Mixte de Recherche 5308 (UMR5308), Centre National de la Recherche Scientifique (CNRS), 69007 Lyon, France.
| | - Olivia Guillin
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France.
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France.
- Ecole Normale Supérieure de Lyon, 69342 Lyon, France.
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France.
- Unité Mixte de Recherche 5308 (UMR5308), Centre National de la Recherche Scientifique (CNRS), 69007 Lyon, France.
| | - Philippe E Mangeot
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France.
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France.
- Ecole Normale Supérieure de Lyon, 69342 Lyon, France.
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France.
- Unité Mixte de Recherche 5308 (UMR5308), Centre National de la Recherche Scientifique (CNRS), 69007 Lyon, France.
| | - Théophile Ohlmann
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France.
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France.
- Ecole Normale Supérieure de Lyon, 69342 Lyon, France.
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France.
- Unité Mixte de Recherche 5308 (UMR5308), Centre National de la Recherche Scientifique (CNRS), 69007 Lyon, France.
| | - Laurent Chavatte
- Centre International de Recherche en Infectiologie (CIRI), 69007 Lyon, France.
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unité U1111, 69007 Lyon, France.
- Ecole Normale Supérieure de Lyon, 69342 Lyon, France.
- Université Claude Bernard Lyon 1 (UCBL1), 69622 Lyon, France.
- Unité Mixte de Recherche 5308 (UMR5308), Centre National de la Recherche Scientifique (CNRS), 69007 Lyon, France.
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24
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Designing selenium functional foods and beverages: A review. Food Res Int 2019; 120:708-725. [DOI: 10.1016/j.foodres.2018.11.029] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/15/2018] [Accepted: 11/15/2018] [Indexed: 02/07/2023]
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Cell-Type Specific Analysis of Selenium-Related Genes in Brain. Antioxidants (Basel) 2019; 8:antiox8050120. [PMID: 31060314 PMCID: PMC6562762 DOI: 10.3390/antiox8050120] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 12/21/2022] Open
Abstract
Selenoproteins are a unique class of proteins that play key roles in redox signaling in the brain. This unique organ is comprised of a wide variety of cell types that includes excitatory neurons, inhibitory neurons, astrocytes, microglia, and oligodendrocytes. Whereas selenoproteins are known to be required for neural development and function, the cell-type specific expression of selenoproteins and selenium-related machinery has yet to be systematically investigated. Due to advances in sequencing technology and investment from the National Institutes of Health (NIH)-sponsored BRAIN initiative, RNA sequencing (RNAseq) data from thousands of cortical neurons can now be freely accessed and searched using the online RNAseq data navigator at the Allen Brain Atlas. Hence, we utilized this newly developed tool to perform a comprehensive analysis of the cell-type specific expression of selenium-related genes in brain. Select proteins of interest were further verified by means of multi-label immunofluorescent labeling of mouse brain sections. Of potential significance to neural selenium homeostasis, we report co-expression of selenoprotein P (SELENOP) and selenium binding protein 1 (SELENBP1) within astrocytes. These findings raise the intriguing possibility that SELENBP1 may negatively regulate astrocytic SELENOP synthesis and thereby limit downstream Se supply to neurons.
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Zhang Y, Ying H, Xu Y. Comparative genomics and metagenomics of the metallomes. Metallomics 2019; 11:1026-1043. [DOI: 10.1039/c9mt00023b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Recent achievements and advances in comparative genomic and metagenomic analyses of trace metals were reviewed and discussed.
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Affiliation(s)
- Yan Zhang
- Shenzhen Key Laboratory of Marine Bioresources and Ecology
- College of Life Sciences and Oceanography
- Shenzhen University
- Shenzhen
- P. R. China
| | - Huimin Ying
- Department of Endocrinology
- Hangzhou Xixi Hospital
- Hangzhou
- P. R. China
| | - Yinzhen Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology
- College of Life Sciences and Oceanography
- Shenzhen University
- Shenzhen
- P. R. China
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Versatility of Synthetic tRNAs in Genetic Code Expansion. Genes (Basel) 2018; 9:genes9110537. [PMID: 30405060 PMCID: PMC6267555 DOI: 10.3390/genes9110537] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 10/31/2018] [Accepted: 11/05/2018] [Indexed: 12/16/2022] Open
Abstract
Transfer RNA (tRNA) is a dynamic molecule used by all forms of life as a key component of the translation apparatus. Each tRNA is highly processed, structured, and modified, to accurately deliver amino acids to the ribosome for protein synthesis. The tRNA molecule is a critical component in synthetic biology methods for the synthesis of proteins designed to contain non-canonical amino acids (ncAAs). The multiple interactions and maturation requirements of a tRNA pose engineering challenges, but also offer tunable features. Major advances in the field of genetic code expansion have repeatedly demonstrated the central importance of suppressor tRNAs for efficient incorporation of ncAAs. Here we review the current status of two fundamentally different translation systems (TSs), selenocysteine (Sec)- and pyrrolysine (Pyl)-TSs. Idiosyncratic requirements of each of these TSs mandate how their tRNAs are adapted and dictate the techniques used to select or identify the best synthetic variants.
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Role of Selenoprotein F in Protein Folding and Secretion: Potential Involvement in Human Disease. Nutrients 2018; 10:nu10111619. [PMID: 30400132 PMCID: PMC6266307 DOI: 10.3390/nu10111619] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 10/20/2018] [Accepted: 10/23/2018] [Indexed: 12/12/2022] Open
Abstract
Selenoproteins form a group of proteins of which its members contain at least one selenocysteine, and most of them serve oxidoreductase functions. Selenoprotein F (SELENOF), one of the 25 currently identified selenoproteins, is located in the endoplasmic reticulum (ER) organelle and is abundantly expressed in many tissues. It is regulated according to its selenium status, as well as by cell stress conditions. SELENOF may be functionally linked to protein folding and the secretion process in the ER. Several studies have reported positive associations between SELENOF genetic variations and several types of cancer. Also, altered expression levels of SELENOF have been found in cancer cases and neurodegenerative diseases. In this review, we summarize the current understanding of the structure, expression, and potential function of SELENOF and discuss its possible relation with various pathological processes.
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Na J, Jung J, Bang J, Lu Q, Carlson BA, Guo X, Gladyshev VN, Kim J, Hatfield DL, Lee BJ. Selenophosphate synthetase 1 and its role in redox homeostasis, defense and proliferation. Free Radic Biol Med 2018; 127:190-197. [PMID: 29715549 DOI: 10.1016/j.freeradbiomed.2018.04.577] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/24/2018] [Accepted: 04/26/2018] [Indexed: 12/26/2022]
Abstract
Selenophosphate synthetase (SEPHS) synthesizes selenophosphate, the active selenium donor, using ATP and selenide as substrates. SEPHS was initially identified and isolated from bacteria and has been characterized in many eukaryotes and archaea. Two SEPHS paralogues, SEPHS1 and SEPHS2, occur in various eukaryotes, while prokaryotes and archaea have only one form of SEPHS. Between the two isoforms in eukaryotes, only SEPHS2 shows catalytic activity during selenophosphate synthesis. Although SEPHS1 does not contain any significant selenophosphate synthesis activity, it has been reported to play an essential role in regulating cellular physiology. Prokaryotic SEPHS contains a cysteine or selenocysteine (Sec) at the catalytic domain. However, in eukaryotes, SEPHS1 contains other amino acids such as Thr, Arg, Gly, or Leu at the catalytic domain, and SEPHS2 contains only a Sec. Sequence comparisons, crystal structure analyses, and ATP hydrolysis assays suggest that selenophosphate synthesis occurs in two steps. In the first step, ATP is hydrolyzed to produce ADP and gamma-phosphate. In the second step, ADP is further hydrolyzed and selenophosphate is produced using gamma-phosphate and selenide. Both SEPHS1 and SEPHS2 have ATP hydrolyzing activities, but Cys or Sec is required in the catalytic domain for the second step of reaction. The gene encoding SEPHS1 is divided by introns, and five different splice variants are produced by alternative splicing in humans. SEPHS1 mRNA is abundant in rapidly proliferating cells such as embryonic and cancer cells and its expression is induced by various stresses including oxidative stress and salinity stress. The disruption of the SEPHS1 gene in mice or Drosophila leads to the inhibition of cell proliferation, embryonic lethality, and morphological changes in the embryos. Targeted removal of SEPHS1 mRNA in insect, mouse, and human cells also leads to common phenotypic changes similar to those observed by in vivo gene knockout: the inhibition of cell growth/proliferation, the accumulation of hydrogen peroxide in mammals and an unidentified reactive oxygen species (ROS) in Drosophila, and the activation of a defense system. Hydrogen peroxide accumulation in SEPHS1-deficient cells is mainly caused by the down-regulation of genes involved in ROS scavenging, and leads to the inhibition of cell proliferation and survival. However, the mechanisms underlying SEPHS1 regulation of redox homeostasis are still not understood.
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Affiliation(s)
- Jiwoon Na
- School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Jisu Jung
- School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Jeyoung Bang
- School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Qiao Lu
- School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Bradley A Carlson
- National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Xiong Guo
- School of Public Health, Xi'an Jiaotong University, Xi'an 710061, PR China
| | - Vadim N Gladyshev
- Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Jinhong Kim
- School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Dolph L Hatfield
- National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Byeong Jae Lee
- School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea.
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Rother M, Quitzke V. Selenoprotein synthesis and regulation in Archaea. Biochim Biophys Acta Gen Subj 2018; 1862:2451-2462. [DOI: 10.1016/j.bbagen.2018.04.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/09/2018] [Accepted: 04/10/2018] [Indexed: 01/23/2023]
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Mahmoodpoor A, Hamishehkar H, Shadvar K, Ostadi Z, Sanaie S, Saghaleini SH, Nader ND. The Effect of Intravenous Selenium on Oxidative Stress in Critically Ill Patients with Acute Respiratory Distress Syndrome. Immunol Invest 2018; 48:147-159. [PMID: 30001171 DOI: 10.1080/08820139.2018.1496098] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To modulate the inflammatory response in respiratory distress syndrome (ARDS) with selenium. BACKGROUND Selenium replenishes the glutathione peroxidase proteins that are the first line of defense for an oxidative injury to the lungs. METHODS Forty patients with ARDS were randomized into two groups: the SEL+ group being administered sodium selenite and the SEL- group receiving normal saline for 10 days. Blood samples were taken on Day-0, DAY-7, and Day-14 for assessment of IL-1 beta, IL-6, C-reactive protein, GPx-3, and selenium. Ferric reducing antioxidant power (FRAP) was measured in the bronchial wash fluids. Pearson correlation and repeated measure analysis were performed to examine the effects of selenium on the inflammatory markers. RESULTS Sodium selenite replenished selenium levels in the SEL+ group. Selenium concentrations were linearly correlated to serum concentrations of GPx3 (R value: 0.631; P < 0.001), and FRAP (R value: -0.785; P < 0.001). Serum concentrations of both IL 1-beta (R value: -0.624; P < 0.001) and IL-6 (R value: -0.642; P < 0.001) were inversely correlated to the serum concentrations of selenium. There was a meaningful difference between two groups in airway resistance and pulmonary compliance changes (P values 0.008 and 0.028, respectively). CONCLUSION Selenium restored the antioxidant capacity of the lungs, moderated the inflammatory responses, and meaningfully improved the respiratory mechanics. Despite these changes, it had no effect on the overall survival, the duration of mechanical ventilation, and ICU stay. Selenium can be used safely; however, more trials are essential to examine its clinical effectiveness.
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Affiliation(s)
- Ata Mahmoodpoor
- a Department of Anesthesiology & Critical Care Medicine , Tabriz University of Medical Sciences , Tabriz , IRAN
| | - Hadi Hamishehkar
- b Department of Clinical Pharmacy , Tabriz University of Medical Sciences , Tabriz , IRAN
| | - Kamran Shadvar
- a Department of Anesthesiology & Critical Care Medicine , Tabriz University of Medical Sciences , Tabriz , IRAN
| | - Zohreh Ostadi
- a Department of Anesthesiology & Critical Care Medicine , Tabriz University of Medical Sciences , Tabriz , IRAN
| | - Sarvin Sanaie
- c Tuberculosis and lung disease Research center , Tabriz University of Medical Sciences , Tabriz , IRAN
| | - Seied Hadi Saghaleini
- a Department of Anesthesiology & Critical Care Medicine , Tabriz University of Medical Sciences , Tabriz , IRAN
| | - Nader D Nader
- d Department of Anesthesiology , University at Buffalo , Buffalo , NY , USA
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Knockdown of Trnau1ap inhibits the proliferation and migration of NIH3T3, JEG-3 and Bewo cells via the PI3K/Akt signaling pathway. Biochem Biophys Res Commun 2018; 503:521-527. [PMID: 29758194 DOI: 10.1016/j.bbrc.2018.05.065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 05/10/2018] [Indexed: 12/17/2022]
Abstract
The tRNA selenocysteine 1 associated protein 1 (Trnau1ap, initially named SECp43) is involved in Selenocysteine (Sec) biosynthesis and incorporation into selenoproteins, which play a key role in biological processes, such as embryonic development. We previously reported that downregulation of Trnau1ap inhibited proliferation of cardiomyocyte-like H9c2 cells. However, the effects of Trnau1ap on cell proliferation and migration of embryonic development are not known, and the mechanisms remain elusive. Herein, lentiviral shRNA vectors were transfected in NIH3T3, JEG-3 and Bewo cells (embryonic, trophoblast and placental cells). We found that knockdown of Trnau1ap resulted in reduced expression levels of selenoproteins. The data of Cell Count Kit-8 (CCK-8) assay and wound scratch assay revealed the proliferation and migration rates were reduced in the Trnau1ap-shRNA groups. Furthermore, western blot analysis showed that the phosphorylation level of Akt in the phosphatidylinositol 3-kinase (PI3K)/Akt pathway was attenuated. These results indicate that Trnau1ap plays an important role in regulation of cell proliferation and migration through the PI3K/Akt signaling pathway, as well as being essential for embryonic development by regulating the expression of selenoproteins.
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Serrão VHB, Silva IR, da Silva MTA, Scortecci JF, de Freitas Fernandes A, Thiemann OH. The unique tRNASec and its role in selenocysteine biosynthesis. Amino Acids 2018; 50:1145-1167. [DOI: 10.1007/s00726-018-2595-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/26/2018] [Indexed: 12/26/2022]
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Translation regulation of mammalian selenoproteins. Biochim Biophys Acta Gen Subj 2018; 1862:2480-2492. [PMID: 29751099 DOI: 10.1016/j.bbagen.2018.05.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/28/2018] [Accepted: 05/04/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Interest in selenium research has considerably grown over the last decades owing to the association of selenium deficiencies with an increased risk of several human diseases, including cancers, cardiovascular disorders and infectious diseases. The discovery of a genetically encoded 21st amino acid, selenocysteine, is a fascinating breakthrough in molecular biology as it is the first addition to the genetic code deciphered in the 1960s. Selenocysteine is a structural and functional analog of cysteine, where selenium replaces sulfur, and its presence is critical for the catalytic activity of selenoproteins. SCOPE OF REVIEW The insertion of selenocysteine is a non-canonical translational event, based on the recoding of a UGA codon in selenoprotein mRNAs, normally used as a stop codon in other cellular mRNAs. Two RNA molecules and associated partners are crucial components of the selenocysteine insertion machinery, the Sec-tRNA[Ser]Sec devoted to UGA codon recognition and the SECIS elements located in the 3'UTR of selenoprotein mRNAs. MAJOR CONCLUSIONS The translational UGA recoding event is a limiting stage of selenoprotein expression and its efficiency is regulated by several factors. GENERAL SIGNIFICANCE The control of selenoproteome expression is crucial for redox homeostasis and antioxidant defense of mammalian organisms. In this review, we summarize current knowledge on the co-translational insertion of selenocysteine into selenoproteins, and its layers of regulation.
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Touat-Hamici Z, Bulteau AL, Bianga J, Jean-Jacques H, Szpunar J, Lobinski R, Chavatte L. Selenium-regulated hierarchy of human selenoproteome in cancerous and immortalized cells lines. Biochim Biophys Acta Gen Subj 2018; 1862:2493-2505. [PMID: 29660373 DOI: 10.1016/j.bbagen.2018.04.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/21/2018] [Accepted: 04/11/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Selenoproteins (25 genes in human) co-translationally incorporate selenocysteine using a UGA codon, normally used as a stop signal. The human selenoproteome is primarily regulated by selenium bioavailability with a tissue-specific hierarchy. METHODS We investigated the hierarchy of selenoprotein expression in response to selenium concentration variation in four cell lines originating from kidney (HEK293, immortalized), prostate (LNCaP, cancer), skin (HaCaT, immortalized) and liver (HepG2, cancer), using complementary analytical methods. We performed (i) enzymatic activity, (ii) RT-qPCR, (iii) immuno-detection, (iv) selenium-specific mass spectrometric detection after non-radioactive 76Se labeling of selenoproteins, and (v) luciferase-based reporter constructs in various cell extracts. RESULTS We characterized cell-line specific alterations of the selenoproteome in response to selenium variation that, in most of the cases, resulted from a translational control of gene expression. We established that UGA-selenocysteine recoding efficiency, which depends on the nature of the SECIS element, dictates the response to selenium variation. CONCLUSIONS We characterized that selenoprotein hierarchy is cell-line specific with conserved features. This analysis should be done prior to any experiments in a novel cell line. GENERAL SIGNIFICANCE We reported a strategy based on complementary methods to evaluate selenoproteome regulation in human cells in culture.
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Affiliation(s)
- Zahia Touat-Hamici
- From the Centre de Génétique Moléculaire, CGM, CNRS, UPR3404, Gif-sur-Yvette 91198, France
| | - Anne-Laure Bulteau
- Institut de Génomique Fonctionnelle de Lyon, IGFL, CNRS/ENS UMR5242, 69007 Lyon, France
| | - Juliusz Bianga
- CNRS/Univ Pau & Pays Adour, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux, IPREM-UMR5254, 64000 Pau, France
| | - Hélène Jean-Jacques
- Institut de Biologie Intégrative de la Cellule, I2BC, 91198 Gif-sur-Yvette, France
| | - Joanna Szpunar
- CNRS/Univ Pau & Pays Adour, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux, IPREM-UMR5254, 64000 Pau, France
| | - Ryszard Lobinski
- CNRS/Univ Pau & Pays Adour, Institut des Sciences Analytiques et de Physico-chimie pour l'Environnement et les Matériaux, IPREM-UMR5254, 64000 Pau, France
| | - Laurent Chavatte
- Centre International de Recherche en Infectiologie, CIRI, 69007 Lyon, France; INSERM U1111, 69007 Lyon, France; CNRS/ENS/UCBL1 UMR5308, 69007 Lyon, France.
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Hosnedlova B, Kepinska M, Skalickova S, Fernandez C, Ruttkay-Nedecky B, Malevu TD, Sochor J, Baron M, Melcova M, Zidkova J, Kizek R. A Summary of New Findings on the Biological Effects of Selenium in Selected Animal Species-A Critical Review. Int J Mol Sci 2017; 18:E2209. [PMID: 29065468 PMCID: PMC5666889 DOI: 10.3390/ijms18102209] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/10/2017] [Accepted: 10/11/2017] [Indexed: 12/18/2022] Open
Abstract
Selenium is an essential trace element important for many physiological processes, especially for the functions of immune and reproductive systems, metabolism of thyroid hormones, as well as antioxidant defense. Selenium deficiency is usually manifested by an increased incidence of retention of placenta, metritis, mastitis, aborts, lowering fertility and increased susceptibility to infections. In calves, lambs and kids, the selenium deficiency demonstrates by WMD (white muscle disease), in foals and donkey foals, it is associated with incidence of WMD and yellow fat disease, and in pigs it causes VESD (vitamin E/selenium deficiency) syndrome. The prevention of these health disorders can be achieved by an adequate selenium supplementation to the diet. The review summarizes the survey of knowledge on selenium, its biological significance in the organism, the impact of its deficiency in mammalian livestock (comparison of ruminants vs. non-ruminants, herbivore vs. omnivore) and possibilities of its peroral administration. The databases employed were as follows: Web of Science, PubMed, MEDLINE and Google Scholar.
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Affiliation(s)
- Bozena Hosnedlova
- Department of Viticulture and Enology, Faculty of Horticulture, Mendel University in Brno, Valtická 337, CZ-691 44 Lednice, Czech Republic.
| | - Marta Kepinska
- Department of Biomedical and Environmental Analyses, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wroclaw, Poland.
| | - Sylvie Skalickova
- Central Laboratory, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1946/1, 612 42 Brno, Czech Republic.
| | - Carlos Fernandez
- School of Pharmacy and Life Sciences, Robert Gordon University, Garthdee Road, Aberdeen AB107GJ, UK.
| | - Branislav Ruttkay-Nedecky
- Central Laboratory, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1946/1, 612 42 Brno, Czech Republic.
| | | | - Jiri Sochor
- Department of Viticulture and Enology, Faculty of Horticulture, Mendel University in Brno, Valtická 337, CZ-691 44 Lednice, Czech Republic.
| | - Mojmir Baron
- Department of Viticulture and Enology, Faculty of Horticulture, Mendel University in Brno, Valtická 337, CZ-691 44 Lednice, Czech Republic.
| | - Magdalena Melcova
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Technicka 3, 166 28 Prague, Czech Republic.
| | - Jarmila Zidkova
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Technicka 3, 166 28 Prague, Czech Republic.
| | - Rene Kizek
- Department of Biomedical and Environmental Analyses, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wroclaw, Poland.
- Central Laboratory, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1946/1, 612 42 Brno, Czech Republic.
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Oudouhou F, Casu B, Dopgwa Puemi AS, Sygusch J, Baron C. Analysis of Novel Interactions between Components of the Selenocysteine Biosynthesis Pathway, SEPHS1, SEPHS2, SEPSECS, and SECp43. Biochemistry 2017; 56:2261-2270. [DOI: 10.1021/acs.biochem.6b01116] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Flore Oudouhou
- Department of Biochemistry
and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Bastien Casu
- Department of Biochemistry
and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Arnold Steve Dopgwa Puemi
- Department of Biochemistry
and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Jurgen Sygusch
- Department of Biochemistry
and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Christian Baron
- Department of Biochemistry
and Molecular Medicine, Faculty of Medicine, Université de Montréal, Montréal, QC, Canada
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38
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Ogra Y. Speciation and Identification of Chalcogen-Containing Metabolites. Metallomics 2017. [DOI: 10.1007/978-4-431-56463-8_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Li MD, Cheng WP, Shi MX, Ge TD, Zheng XL, Wu DY, Hu XY, Luo JC, Li FL, Li H. Role of tRNA selenocysteine 1 associated protein 1 in the proliferation and apoptosis of cardiomyocyte‑like H9c2 cells. Mol Med Rep 2016; 15:988-994. [PMID: 28101579 DOI: 10.3892/mmr.2016.6099] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 11/22/2016] [Indexed: 11/06/2022] Open
Abstract
Transfer RNA selenocysteine 1 associated protein 1 (Trnau1ap) serves an essential role in the synthesis of selenoproteins, which have critical functions in numerous biological processes. Selenium deficiency results in a variety of diseases, including cardiac disease. However, the mechanisms underlying myocardial injury induced by selenium deficiency remain unclear. The present study examined the effects of Trnau1ap under‑ and overexpression in cardiomyocyte‑like H9c2 cells, by transfection with small interfering RNA and an overexpression plasmid, respectively. Expression levels of glutathione peroxidase, thioredoxin reductase and selenoprotein K were decreased in Trnau1ap‑underexpressing cells, and increased in Trnau1ap‑overexpressing cells. Using MTT, proliferating cell nuclear antigen, annexin V and caspase‑3 activity assays, it was demonstrated that reducing Trnau1ap expression levels inhibited the proliferation of H9c2 cells and induced apoptosis. Conversely, increasing Trnau1ap expression levels promoted cell growth. Western blot analysis revealed that the phosphoinositide 3‑kinase/protein kinase B signaling pathway was activated in Trnau1ap‑underexpressing cells. Furthermore, the apoptotic pathway was activated in these cells, evidenced by relatively greater expression levels of B‑cell lymphoma (Bcl‑2)‑associated X protein and reduced expression levels of Bcl‑2. Taken together, these findings suggest that Trnau1ap serves a key role in the proliferation and apoptosis of H9c2 cells. The present study provides insight into the underlying mechanisms of myocardial injury induced by selenium deficiency.
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Affiliation(s)
- Meng-Di Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Wan-Peng Cheng
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Min-Xia Shi
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Tang-Dong Ge
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Xiao-Lin Zheng
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Dong-Yuan Wu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Xiao-Yan Hu
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Jin-Cheng Luo
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Feng-Lan Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
| | - Hui Li
- Department of Biochemistry and Molecular Biology, Harbin Medical University, Harbin, Heilongjiang 150081, P.R. China
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Sonet J, Bulteau AL, Chavatte L, García-Barrera T, Gómez-Ariza JL, Callejón-Leblic B, Nischwitz V, Theiner S, Galvez L, Koellensperger G, Keppler BK, Roman M, Barbante C, Neth K, Bornhorst J, Michalke B. Biomedical and Pharmaceutical Applications. Metallomics 2016. [DOI: 10.1002/9783527694907.ch13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jordan Sonet
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Anne-Laure Bulteau
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Laurent Chavatte
- Centre National de Recherche Scientifique (CNRS)/Université de Pau et des Pays de l'Adour (UPPA), Unité Mixte de Recherche (UMR) 5254; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Laboratoire de Chimie Analytique Bio-Inorganique et Environnement (LCABIE); Technopôle Hélioparc Pau Pyrénées, 2 Avenue du Président Pierre Angot 64000 Pau France
| | - Tamara García-Barrera
- University of Huelva; Department of Chemistry, Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - José Luis Gómez-Ariza
- University of Huelva, Research Center of Health and Environment (CYSMA); Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - Belén Callejón-Leblic
- University of Huelva; Department of Chemistry, Campus El Carmen; Fuerzas Armadas Ave 21007 Huelva Spain
| | - Volker Nischwitz
- Forschungszentrum Jülich; Central Institute for Engineering, Electronics and Analytics; Analytics (ZEA-3), Wilhelm-Johnen-Straße 52428 Jülich Germany
| | - Sarah Theiner
- University of Vienna; Department of Inorganic Chemistry; Waehringer Strasse 42 1090 Vienna Austria
| | - Luis Galvez
- University of Vienna, Research Platform ‘Translational Cancer Therapy Research’; Waehringer Strasse 42 1090 Vienna Austria
| | - Gunda Koellensperger
- University of Vienna, Department of Analytical Chemistry; Waehringer Strasse 38 1090 Vienna Austria
| | - Bernhard K. Keppler
- University of Vienna; Department of Inorganic Chemistry; Waehringer Strasse 42 1090 Vienna Austria
| | - Marco Roman
- Ca' Foscari University of Venice; Department of Environmental Sciences, Informatics and Statistics (DAIS); Via Torino 155 30172 Venice Italy
| | - Carlo Barbante
- National Research Council; Institute for the Dynamics of Environmental Processes (IDPA-CNR); Via Torino 155 30172 Venice Italy
| | - Katharina Neth
- Helmholtz Center Munich, German Research Center for Environmental Health GmbH; Research Unit: Analytical BioGeoChemistry; Ingolstädter Landstraße 1 85764 Neuherberg Germany
| | - Julia Bornhorst
- University of Potsdam; Department of Food Chemistry, Institute of Nutritional Science; Arthur-Scheunert-Allee 114-116 14558 Nuthetal Germany
| | - Bernhard Michalke
- Helmholtz Center Munich, German Research Center for Environmental Health GmbH; Research Unit: Analytical BioGeoChemistry; Ingolstädter Landstraße 1 85764 Neuherberg Germany
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Abstract
The authors were asked by the Editors of ACS Chemical Biology to write an article titled "Why Nature Chose Selenium" for the occasion of the upcoming bicentennial of the discovery of selenium by the Swedish chemist Jöns Jacob Berzelius in 1817 and styled after the famous work of Frank Westheimer on the biological chemistry of phosphate [Westheimer, F. H. (1987) Why Nature Chose Phosphates, Science 235, 1173-1178]. This work gives a history of the important discoveries of the biological processes that selenium participates in, and a point-by-point comparison of the chemistry of selenium with the atom it replaces in biology, sulfur. This analysis shows that redox chemistry is the largest chemical difference between the two chalcogens. This difference is very large for both one-electron and two-electron redox reactions. Much of this difference is due to the inability of selenium to form π bonds of all types. The outer valence electrons of selenium are also more loosely held than those of sulfur. As a result, selenium is a better nucleophile and will react with reactive oxygen species faster than sulfur, but the resulting lack of π-bond character in the Se-O bond means that the Se-oxide can be much more readily reduced in comparison to S-oxides. The combination of these properties means that replacement of sulfur with selenium in nature results in a selenium-containing biomolecule that resists permanent oxidation. Multiple examples of this gain of function behavior from the literature are discussed.
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Affiliation(s)
- Hans J. Reich
- University of Wisconsin—Madison, Department of Chemistry, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Robert J. Hondal
- University of Vermont, Department of Biochemistry, 89 Beaumont Ave, Given Laboratory, Room B413, Burlington, Vermont 05405, United States
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42
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Li G, Liu L, Li P, Chen L, Song H, Zhang Y. Gene expression profiling of selenophosphate synthetase 2 knockdown in Drosophila melanogaster. Metallomics 2016; 8:354-65. [PMID: 26824785 DOI: 10.1039/c5mt00134j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selenium (Se) is an important trace element for many organisms and is incorporated into selenoproteins as selenocysteine (Sec). In eukaryotes, selenophosphate synthetase SPS2 is essential for Sec biosynthesis. In recent years, genetic disruptions of both Sec biosynthesis genes and selenoprotein genes have been investigated in different animal models, which provide important clues for understanding the Se metabolism and function in these organisms. However, a systematic study on the knockdown of SPS2 has not been performed in vivo. Herein, we conducted microarray experiments to study the transcriptome of fruit flies with knockdown of SPS2 in larval and adult stages. Several hundred differentially expressed genes were identified in each stage. In spite that the expression levels of other Sec biosynthesis genes and selenoprotein genes were not significantly changed, it is possible that selenoprotein translation might be reduced without impacting the mRNA level. Functional enrichment and network-based analyses revealed that although different sets of differentially expressed genes were obtained in each stage, they were both significantly enriched in the carbohydrate metabolism and redox processes. Furthermore, protein-protein interaction (PPI)-based network clustering analysis implied that several hub genes detected in the top modules, such as Nimrod C1 and regucalcin, could be considered as key regulators that are responsible for the complex responses caused by SPS2 knockdown. Overall, our data provide new insights into the relationship between Se utilization and several fundamental cellular processes as well as diseases.
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Affiliation(s)
- Gaopeng Li
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China. and Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China. and Key Laboratory of Food Safety Risk Assessment Ministry of Health, Beijing, China
| | - Liying Liu
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China. and Key Laboratory of Food Safety Risk Assessment Ministry of Health, Beijing, China
| | - Ping Li
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China. and Key Laboratory of Food Safety Risk Assessment Ministry of Health, Beijing, China
| | - Luonan Chen
- Key Laboratory of Systems Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.
| | - Haiyun Song
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China. and Key Laboratory of Food Safety Risk Assessment Ministry of Health, Beijing, China
| | - Yan Zhang
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China. and Key Laboratory of Food Safety Risk Assessment Ministry of Health, Beijing, China
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Comparative genomics reveals new evolutionary and ecological patterns of selenium utilization in bacteria. ISME JOURNAL 2016; 10:2048-59. [PMID: 26800233 PMCID: PMC5029168 DOI: 10.1038/ismej.2015.246] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 10/28/2015] [Accepted: 11/27/2015] [Indexed: 12/15/2022]
Abstract
Selenium (Se) is an important micronutrient for many organisms, which is required for the biosynthesis of selenocysteine, selenouridine and Se-containing cofactor. Several key genes involved in different Se utilization traits have been characterized; however, systematic studies on the evolution and ecological niches of Se utilization are very limited. Here, we analyzed more than 5200 sequenced organisms to examine the occurrence patterns of all Se traits in bacteria. A global species map of all Se utilization pathways has been generated, which demonstrates the most detailed understanding of Se utilization in bacteria so far. In addition, the selenophosphate synthetase gene, which is used to define the overall Se utilization, was also detected in some organisms that do not have any of the known Se traits, implying the presence of a novel Se form in this domain. Phylogenetic analyses of components of different Se utilization traits revealed new horizontal gene transfer events for each of them. Moreover, by characterizing the selenoproteomes of all organisms, we found a new selenoprotein-rich phylum and additional selenoprotein-rich species. Finally, the relationship between ecological environments and Se utilization was investigated and further verified by metagenomic analysis of environmental samples, which indicates new macroevolutionary trends of each Se utilization trait in bacteria. Our data provide insights into the general features of Se utilization in bacteria and should be useful for a further understanding of the evolutionary dynamics of Se utilization in nature.
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Zhang X, Zhang L, Zhu JH, Cheng WH. Nuclear selenoproteins and genome maintenance. IUBMB Life 2015; 68:5-12. [PMID: 26614639 DOI: 10.1002/iub.1455] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 10/26/2015] [Indexed: 01/23/2023]
Abstract
Selenium is an essential metalloid required for the expression of selenoproteins. While cells are constantly challenged by clastogens of endogenous and exogenous origins, genome integrity is maintained by direct repair of DNA damage, redox balance, and epigenetic regulation. To date, only five selenoproteins are experimentally demonstrated to reside in nucleus, exclusively or partially, including selenoprotein H, methionine-R-sulfoxide reductase 1, glutathione peroxidase-4, thioredoxin reductase-1, and thioredoxin glutathione reductase. All these five selenoproteins have demonstrated or potential roles in redox regulation and genome maintenance. Selenoprotein H is known to transactivate the expression of a couple of genes against oxidative stress. The thioredoxin reductase-1b isoform delivers estrogen receptor-α and -β to the nucleus. Nuclear glutathione peroxidase-4 epigenetically and globally inhibits gene expression through the maintenance of chromatin compactness in testes. Continued studies on how these and additional nuclear selenoproteins regulate genome stability will have profound impact on advancing our understanding in selenium regulation of optimal health. © 2015 IUBMB Life, 68(1):5-12, 2016.
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Affiliation(s)
- Xiong Zhang
- Department of Geriatrics & Neurology, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Li Zhang
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA
| | - Jian-Hong Zhu
- Department of Preventive Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wen-Hsing Cheng
- Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS, USA
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Malinouski M, Hasan NM, Zhang Y, Seravalli J, Lin J, Avanesov A, Lutsenko S, Gladyshev VN. Genome-wide RNAi ionomics screen reveals new genes and regulation of human trace element metabolism. Nat Commun 2015; 5:3301. [PMID: 24522796 PMCID: PMC5578452 DOI: 10.1038/ncomms4301] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 01/23/2014] [Indexed: 11/09/2022] Open
Abstract
Trace elements are essential for human metabolism and dysregulation of their homoeostasis is associated with numerous disorders. Here we characterize mechanisms that regulate trace elements in human cells by designing and performing a genome-wide high-throughput siRNA/ionomics screen, and examining top hits in cellular and biochemical assays. The screen reveals high stability of the ionomes, especially the zinc ionome, and yields known regulators and novel candidates. We further uncover fundamental differences in the regulation of different trace elements. Specifically, selenium levels are controlled through the selenocysteine machinery and expression of abundant selenoproteins; copper balance is affected by lipid metabolism and requires machinery involved in protein trafficking and post-translational modifications; and the iron levels are influenced by iron import and expression of the iron/haeme-containing enzymes. Our approach can be applied to a variety of disease models and/or nutritional conditions, and the generated data set opens new directions for studies of human trace element metabolism.
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Affiliation(s)
- Mikalai Malinouski
- 1] Genetics Division, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA [2] Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - Nesrin M Hasan
- Department of Physiology, Johns Hopkins University, Baltimore, Maryland 21205, USA
| | - Yan Zhang
- 1] Genetics Division, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA [2] Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Javier Seravalli
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - Jie Lin
- 1] Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China [2] Key Laboratory of Systems Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai 200031, China
| | - Andrei Avanesov
- Genetics Division, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Svetlana Lutsenko
- Department of Physiology, Johns Hopkins University, Baltimore, Maryland 21205, USA
| | - Vadim N Gladyshev
- Genetics Division, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
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Abstract
SIGNIFICANCE Selenium is an essential trace element that is incorporated in the small but vital family of proteins, namely the selenoproteins, as the selenocysteine amino acid residue. In humans, 25 selenoprotein genes have been characterized. The most remarkable trait of selenoprotein biosynthesis is the cotranslational insertion of selenocysteine by the recoding of a UGA codon, normally decoded as a stop signal. RECENT ADVANCES In eukaryotes, a set of dedicated cis- and trans-acting factors have been identified as well as a variety of regulatory mechanisms, factors, or elements that control the selenoprotein expression at the level of the UGA-selenocysteine recoding process, offering a fascinating playground in the field of translational control. It appeared that the central players are two RNA molecules: the selenocysteine insertion sequence (SECIS) element within selenoprotein mRNA and the selenocysteine-tRNA([Ser]Sec); and their interacting partners. CRITICAL ISSUES After a couple of decades, despite many advances in the field and the discovery of many essential and regulatory components, the precise mechanism of UGA-selenocysteine recoding remains elusive and more complex than anticipated, with many layers of control. This review offers an update of selenoproteome biosynthesis and regulation in eukaryotes. FUTURE DIRECTIONS The regulation of selenoproteins in response to a variety of pathophysiological conditions and cellular stressors, including selenium levels, oxidative stress, replicative senescence, or cancer, awaits further detailed investigation. Clearly, the efficiency of UGA-selenocysteine recoding is the limiting stage of selenoprotein synthesis. The sequence of events leading Sec-tRNA([Ser]Sec) delivery to ribosomal A site awaits further analysis, notably at the level of a three-dimensional structure.
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Affiliation(s)
- Anne-Laure Bulteau
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, IPREM , CNRS/UPPA, UMR5254, Pau, France
| | - Laurent Chavatte
- Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, IPREM , CNRS/UPPA, UMR5254, Pau, France
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Anan Y, Kimura M, Hayashi M, Koike R, Ogra Y. Detoxification of selenite to form selenocyanate in mammalian cells. Chem Res Toxicol 2015; 28:1803-14. [PMID: 26243445 DOI: 10.1021/acs.chemrestox.5b00254] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
When human hepatoma HepG2 cells were exposed to sodium selenite, an unknown selenium metabolite was detected in the cytosolic fraction by HPLC-inductively coupled plasma mass spectrometry (ICP-MS). The unknown selenium metabolite was also detected in the mixture of HepG2 homogenate and sodium selenite in the presence of exogenous glutathione (GSH). The unknown selenium metabolite was identified as selenocyanate by electrospray ionization mass spectrometry (ESI-MS) and ESI quadrupole time-of-flight mass spectrometry (ESI-Q-TOF-MS). Because exogenous cyanide increased the amount of selenocyanate in the mixture, selenocyanate seemed to be formed by the reaction between selenide or its equivalent, the product of the reduction of selenite, and endogenous cyanide. Rhodanase, an enzyme involved in thiocyanate synthesis, was not required for the formation of selenocyanate. Selenocyanate was less toxic to HepG2 cells than selenite or cyanide, suggesting that it was formed to reduce the toxicity of selenite. However, selenocyanate could be assimilated into selenoproteins and selenometabolites in rats in the same manner as selenite. Consequently, selenite was metabolized to selenocyanate to temporarily ameliorate its toxicity, and selenocyanate acted as an intrinsic selenium pool in cultured cells exposed to surplus selenite.
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Affiliation(s)
- Yasumi Anan
- Laboratory of Chemical Toxicology and Environmental Health, Showa Pharmaceutical University , Machida, Tokyo 194-8543, Japan
| | - Momoko Kimura
- Laboratory of Chemical Toxicology and Environmental Health, Showa Pharmaceutical University , Machida, Tokyo 194-8543, Japan
| | - Marina Hayashi
- Laboratory of Chemical Toxicology and Environmental Health, Showa Pharmaceutical University , Machida, Tokyo 194-8543, Japan
| | - Ren Koike
- Laboratory of Chemical Toxicology and Environmental Health, Showa Pharmaceutical University , Machida, Tokyo 194-8543, Japan
| | - Yasumitsu Ogra
- Department of Toxicology and Environmental Health, Graduate School of Pharmaceutical Sciences, Chiba University , Chuo, Chiba 260-8675, Japan
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48
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Baranov PV, Atkins JF, Yordanova MM. Augmented genetic decoding: global, local and temporal alterations of decoding processes and codon meaning. Nat Rev Genet 2015; 16:517-29. [PMID: 26260261 DOI: 10.1038/nrg3963] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The non-universality of the genetic code is now widely appreciated. Codes differ between organisms, and certain genes are known to alter the decoding rules in a site-specific manner. Recently discovered examples of decoding plasticity are particularly spectacular. These examples include organisms and organelles with disruptions of triplet continuity during the translation of many genes, viruses that alter the entire genetic code of their hosts and organisms that adjust their genetic code in response to changing environments. In this Review, we outline various modes of alternative genetic decoding and expand existing terminology to accommodate recently discovered manifestations of this seemingly sophisticated phenomenon.
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Affiliation(s)
- Pavel V Baranov
- School of Biochemistry and Cell Biology, University College Cork, Ireland
| | - John F Atkins
- 1] School of Biochemistry and Cell Biology, University College Cork, Ireland. [2] Department of Human Genetics, University of Utah, 15 N 2030 E Rm. 7410, Salt Lake City, Utah 84112-5330, USA
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49
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Evolution of selenophosphate synthetases: emergence and relocation of function through independent duplications and recurrent subfunctionalization. Genome Res 2015; 25:1256-67. [PMID: 26194102 PMCID: PMC4561486 DOI: 10.1101/gr.190538.115] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 07/16/2015] [Indexed: 01/19/2023]
Abstract
Selenoproteins are proteins that incorporate selenocysteine (Sec), a nonstandard amino acid encoded by UGA, normally a stop codon. Sec synthesis requires the enzyme Selenophosphate synthetase (SPS or SelD), conserved in all prokaryotic and eukaryotic genomes encoding selenoproteins. Here, we study the evolutionary history of SPS genes, providing a map of selenoprotein function spanning the whole tree of life. SPS is itself a selenoprotein in many species, although functionally equivalent homologs that replace the Sec site with cysteine (Cys) are common. Many metazoans, however, possess SPS genes with substitutions other than Sec or Cys (collectively referred to as SPS1). Using complementation assays in fly mutants, we show that these genes share a common function, which appears to be distinct from the synthesis of selenophosphate carried out by the Sec- and Cys- SPS genes (termed SPS2), and unrelated to Sec synthesis. We show here that SPS1 genes originated through a number of independent gene duplications from an ancestral metazoan selenoprotein SPS2 gene that most likely already carried the SPS1 function. Thus, in SPS genes, parallel duplications and subsequent convergent subfunctionalization have resulted in the segregation to different loci of functions initially carried by a single gene. This evolutionary history constitutes a remarkable example of emergence and evolution of gene function, which we have been able to trace thanks to the singular features of SPS genes, wherein the amino acid at a single site determines unequivocally protein function and is intertwined to the evolutionary fate of the entire selenoproteome.
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Kieliszek M, Błażejak S, Gientka I, Bzducha-Wróbel A. Accumulation and metabolism of selenium by yeast cells. Appl Microbiol Biotechnol 2015; 99:5373-82. [PMID: 26003453 PMCID: PMC4464373 DOI: 10.1007/s00253-015-6650-x] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 04/23/2015] [Accepted: 04/25/2015] [Indexed: 11/30/2022]
Abstract
This paper examines the process of selenium bioaccumulation and selenium metabolism in yeast cells. Yeast cells can bind elements in ionic from the environment and permanently integrate them into their cellular structure. Up to now, Saccharomyces cerevisiae, Candida utilis, and Yarrowia lipolytica yeasts have been used primarily in biotechnological studies to evaluate binding of minerals. Yeast cells are able to bind selenium in the form of both organic and inorganic compounds. The process of bioaccumulation of selenium by microorganisms occurs through two mechanisms: extracellular binding by ligands of membrane assembly and intracellular accumulation associated with the transport of ions across the cytoplasmic membrane into the cell interior. During intracellular metabolism of selenium, oxidation, reduction, methylation, and selenoprotein synthesis processes are involved, as exemplified by detoxification processes that allow yeasts to survive under culture conditions involving the elevated selenium concentrations which were observed. Selenium yeasts represent probably the best absorbed form of this element. In turn, in terms of wide application, the inclusion of yeast with accumulated selenium may aid in lessening selenium deficiency in a diet.
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Affiliation(s)
- Marek Kieliszek
- Department of Biotechnology, Microbiology and Food Evaluation, Faculty of Food Sciences, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159 C, 02-776, Warsaw, Poland,
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