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Wu H, Jia X, Zhao H, Huang Y, Liu C, Huang Z, Li S, Wang J. Identification of SEPP1 polymorphisms is not a genetic risk factor for preeclampsia in Chinese Han women: A clinical trial and experimental study. Medicine (Baltimore) 2017; 96:e7249. [PMID: 28700468 PMCID: PMC5515740 DOI: 10.1097/md.0000000000007249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 05/28/2017] [Accepted: 05/30/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND SEPP1 encodes selenoprotein P, which involved in oxidative stress and plays an important role in the development of preeclampsia (PE). The aim of this study was to investigate the association between PE and genetic variants of SEPP1 in Chinese Han women. METHODS In all, 2434 unrelated pregnant women were recruited, including 1034 PE cases and 1400 normal pregnant controls. TaqMan allelic discrimination real-time PCR method was used to genotype the 2 polymorphisms of rs7579 and rs230813 in SEPP1. RESULTS No statistically significant difference in genotypic or allelic frequencies were found at the 2 genetic variants in SEPP1 between PE patients and controls (rs7579: genotype χ = 2.417, P = .299 and allele χ = 0.197, P = .761, odds ratio 1.049, 95% confidence interval 0.744-1.151; rs230813: genotype χ = 3.273, P = .195 and allele χ = 0.252, P = .615, odds ratio 0.971, 95% confidence interval 0.864-1.091). There were also no statistically significant differences in genetic distributions between mild/severe PE or early/late-onset PE and control subgroups. CONCLUSION Our data indicate that the 2 genetic variants of rs7579 and rs230813 in SEPP1 may not play a role in the pathogenesis of PE in Chinese Han Women.
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Affiliation(s)
- Hong Wu
- Department of Prenatal Diagnosis, Yantai Yuhuangding Hospital, Yantai
| | - Xuewen Jia
- Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao
- Department of Cardiology, the Affiliated Hospital of Qingdao University, Qingdao
| | - Hong Zhao
- Department of Blood Transfusion, the Second Affiliated of Harbin Medical University, Harbin
| | - Youmin Huang
- Department of Clinical Laboratory, Tengzhou Central People's Hospital, Zaozhuang
| | - Chang Liu
- Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao
| | - Zuzhou Huang
- Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao
| | - Shunjun Li
- Department of Clinical Laboratory, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
| | - Jingli Wang
- Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao
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Expression profiling indicating low selenium-sensitive microRNA levels linked to cell cycle and cell stress response pathways in the CaCo-2 cell line. Br J Nutr 2017; 117:1212-1221. [PMID: 28571588 DOI: 10.1017/s0007114517001143] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Se is an essential micronutrient for human health, and fluctuations in Se levels and the potential cellular dysfunction associated with it may increase the risk for disease. Although Se has been shown to influence several biological pathways important in health, little is known about the effect of Se on the expression of microRNA (miRNA) molecules regulating these pathways. To explore the potential role of Se-sensitive miRNA in regulating pathways linked with colon cancer, we profiled the expression of 800 miRNA in the CaCo-2 human adenocarcinoma cell line in response to a low-Se (72 h at <40 nm) environment using nCounter direct quantification. These data were then examined using a range of in silico databases to identify experimentally validated miRNA-mRNA interactions and the biological pathways involved. We identified ten Se-sensitive miRNA (hsa-miR-93-5p, hsa-miR-106a-5p, hsa-miR-205-5p, hsa-miR-200c-3p, hsa-miR-99b-5p, hsa-miR-302d-3p, hsa-miR-373-3p, hsa-miR-483-3p, hsa-miR-512-5p and hsa-miR-4454), which regulate 3588 mRNA in key pathways such as the cell cycle, the cellular response to stress, and the canonical Wnt/β-catenin, p53 and ERK/MAPK signalling pathways. Our data show that the effects of low Se on biological pathways may, in part, be due to these ten Se-sensitive miRNA. Dysregulation of the cell cycle and of the stress response pathways due to low Se may influence key genes involved in carcinogenesis.
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53
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Dalto DB, Lapointe J, Matte JJ. Assessment of antioxidative and selenium status by seleno-dependent glutathione peroxidase activity in different blood fractions using a pig model: issues for clinical nutrition and research. J Anim Physiol Anim Nutr (Berl) 2017; 102:184-193. [PMID: 28304104 DOI: 10.1111/jpn.12677] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 12/18/2016] [Indexed: 01/11/2023]
Abstract
Blood seleno-dependent glutathione peroxidase (SeGPX) activity is widely used as a metabolic indicator of systemic antioxidative status despite inconsistent responses in the literature. This study aimed to compare SeGPX activity profiles in different blood fractions, expressed with different reference units, and assess their impact on interpretation of results. Two studies on selenium (Se) metabolism in gilts, including long-term and peri-oestrus SeGPX activity profiles, were submitted to analysis of variance with double repeated measures, after data set standardization. Differences between studies were experimental period (three post-pubertal oestrus or five post-pubertal oestrus +30 days of gestation) and sample type (whole blood or blood plasma). No difference was observed between whole-blood long-term profiles (three oestrus) for SeGPX activity/mg haemoglobin (SeGPXhb) vs. SeGPX activity/ml whole blood (SeGPXwb; p = 0.29). No long-term difference was observed in whole blood between profiles according to dietary Se provision (basal and dietary Se-supplemented groups; p ≥ 0.12). Blood plasma long-term profiles (five oestrus + 30 days gestation) for SeGPX/mg blood plasma protein (SeGPXpro) were different from SeGPX/ml blood plasma (SeGPXpla) according or not to Se provision (p ≤ 0.007 and p < 0.001 respectively). However, regardless of Se provision (p ≥ 0.80), when excluding gestation from the model, blood plasma profiles were similar. During the peri-oestrus period (day -4 to +3), regardless of Se provision, SeGPX activity profiles differed according to reference units in both studies (p < 0.001). However, considering Se provision, similar profiles were observed in whole blood and blood plasma (p ≥ 0.27) for basal Se groups, whereas in Se-supplemented groups they differed for both sample types (p ≤ 0.02). In conclusion, reference units influence interpretation of SeGPX activity according to physiological state. During oxidative stress periods, this effect depends upon dietary Se provision.
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Affiliation(s)
- D B Dalto
- Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada
| | - J Lapointe
- Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada
| | - J-J Matte
- Sherbrooke Research and Development Centre, Agriculture and Agri-Food Canada, Sherbrooke, Quebec, Canada
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Costa Pereira C, Durães C, Coelho R, Grácio D, Silva M, Peixoto A, Lago P, Pereira M, Catarino T, Pinho S, Teixeira JP, Macedo G, Annese V, Magro F. Association between Polymorphisms in Antioxidant Genes and Inflammatory Bowel Disease. PLoS One 2017; 12:e0169102. [PMID: 28052094 PMCID: PMC5215755 DOI: 10.1371/journal.pone.0169102] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 12/12/2016] [Indexed: 12/14/2022] Open
Abstract
Inflammation is the driving force in inflammatory bowel disease (IBD) and its link to oxidative stress and carcinogenesis has long been accepted. The antioxidant system of the intestinal mucosa in IBD is compromised resulting in increased oxidative injury. This defective antioxidant system may be the result of genetic variants in antioxidant genes, which can represent susceptibility factors for IBD, namely Crohn's disease (CD) and ulcerative colitis (UC). Single nucleotide polymorphisms (SNPs) in the antioxidant genes SOD2 (rs4880) and GPX1 (rs1050450) were genotyped in a Portuguese population comprising 436 Crohn's disease and 367 ulcerative colitis patients, and 434 healthy controls. We found that the AA genotype in GPX1 is associated with ulcerative colitis (OR = 1.93, adjusted P-value = 0.037). Moreover, we found nominal significant associations between SOD2 and Crohn's disease susceptibility and disease subphenotypes but these did not withstand the correction for multiple testing. These findings indicate a possible link between disease phenotypes and antioxidant genes. These results suggest a potential role for antioxidant genes in IBD pathogenesis and should be considered in future association studies.
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Affiliation(s)
- Cristiana Costa Pereira
- Department of Environmental Health, National Institute of Health Dr. Ricardo Jorge, Oporto, Portugal
- MedInUP – Centre for Drug Discovery and Innovative Medicines, University of Porto, Oporto, Portugal
- EPIUnit – Institute of Public Health, University of Porto, Oporto, Portugal
| | - Cecília Durães
- Ipatimup – Institute of Molecular Pathology and Immunology of the University of Porto, Oporto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Oporto, Portugal
| | - Rosa Coelho
- Department of Gastroenterology, Faculty of Medicine, Centro Hospitalar São João, Oporto, Portugal
| | - Daniela Grácio
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Porto, Oporto, Portugal
| | - Marco Silva
- Department of Gastroenterology, Faculty of Medicine, Centro Hospitalar São João, Oporto, Portugal
| | - Armando Peixoto
- Department of Gastroenterology, Faculty of Medicine, Centro Hospitalar São João, Oporto, Portugal
| | - Paula Lago
- Department of Gastroenterology, HSA – Centro Hospitalar do Porto, Oporto, Portugal
| | - Márcia Pereira
- Ipatimup – Institute of Molecular Pathology and Immunology of the University of Porto, Oporto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Oporto, Portugal
- Institute for the Biomedical Sciences Abel Salazar, University of Porto, Oporto, Portugal
| | - Telmo Catarino
- Ipatimup – Institute of Molecular Pathology and Immunology of the University of Porto, Oporto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Oporto, Portugal
| | - Salomé Pinho
- Ipatimup – Institute of Molecular Pathology and Immunology of the University of Porto, Oporto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Oporto, Portugal
| | - João Paulo Teixeira
- Department of Environmental Health, National Institute of Health Dr. Ricardo Jorge, Oporto, Portugal
- EPIUnit – Institute of Public Health, University of Porto, Oporto, Portugal
| | - Guilherme Macedo
- Department of Gastroenterology, Faculty of Medicine, Centro Hospitalar São João, Oporto, Portugal
| | - Vito Annese
- Emergency Department, Gastroenterology Unit, AOU Careggi, Florence, Italy
| | - Fernando Magro
- MedInUP – Centre for Drug Discovery and Innovative Medicines, University of Porto, Oporto, Portugal
- Department of Gastroenterology, Faculty of Medicine, Centro Hospitalar São João, Oporto, Portugal
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Porto, Oporto, Portugal
- * E-mail:
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55
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Fontelles CC, Ong TP. Selenium and Breast Cancer Risk: Focus on Cellular and Molecular Mechanisms. Adv Cancer Res 2017; 136:173-192. [PMID: 29054418 DOI: 10.1016/bs.acr.2017.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Selenium (Se) is a micronutrient with promising breast cancer prevention and treatment potential. There is extensive preclinical evidence of Se mammary carcinogenesis inhibition. Evidence from epidemiological studies is, however, unclear and intervention studies are rare. Here, we examine Se chemoprotection, chemoprevention, and chemotherapy effects in breast cancer, focusing on associated cellular and molecular mechanisms. Se exerts its protective actions through multiple mechanisms that involve antioxidant activities, induction of apoptosis, and inhibition of DNA damage, cell proliferation, angiogenesis, and invasion. New aspects of Se actions in breast cancer have emerged such as the impact of genetic polymorphisms on Se metabolism and response, new functions of selenoproteins, epigenetic modulation of gene expression, and long-term influence of early-life exposure on disease risk. Opportunity exists to design interventional studies with Se for breast cancer prevention and treatment taking into consideration these key aspects.
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56
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Ekoue DN, Zaichick S, Valyi-Nagy K, Picklo M, Lacher C, Hoskins K, Warso MA, Bonini MG, Diamond AM. Selenium levels in human breast carcinoma tissue are associated with a common polymorphism in the gene for SELENOP (Selenoprotein P). J Trace Elem Med Biol 2017; 39:227-233. [PMID: 27908419 DOI: 10.1016/j.jtemb.2016.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 11/16/2022]
Abstract
Selenium supplementation of the diets of rodents has consistently been shown to suppress mammary carcinogenesis and some, albeit not all, human epidemiological studies have indicated an inverse association between selenium and breast cancer risk. In order to better understand the role selenium plays in breast cancer, 30 samples of tumor tissue were obtained from women with breast cancer and analyzed for selenium concentration, the levels of several selenium-containing proteins and the levels of the MnSOD anti-oxidant protein. Polymorphisms within the genes for these same proteins were determined from DNA isolated from the tissue samples. There was a wide range of selenium in these tissues, ranging from 24 to 854ng/gm. The selenium levels in the tissues were correlated to the genotype of the SELENOP selenium carrier protein, but not to other proteins whose levels have been reported to be responsive to selenium availability, including GPX1, SELENOF and SBP1. There was an association between a polymorphism in the gene for MnSOD and the levels of the encoded protein. These studies were the first to examine the relationship between selenium levels, genotypes and protein levels in human tissues. Furthermore, the obtained data provide evidence for the need to obtain data about the effects of selenium in breast cancer by examining samples from that particular tissue type.
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Affiliation(s)
- Dede N Ekoue
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Sofia Zaichick
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Klara Valyi-Nagy
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Matthew Picklo
- USDA-ARS, Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA.
| | - Craig Lacher
- USDA-ARS, Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA.
| | - Kent Hoskins
- Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Michael A Warso
- Department of Surgery, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Marcelo G Bonini
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA; Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Alan M Diamond
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
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57
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Selenium nanoparticles as a nutritional supplement. Nutrition 2017; 33:83-90. [DOI: 10.1016/j.nut.2016.05.001] [Citation(s) in RCA: 243] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 04/14/2016] [Accepted: 05/01/2016] [Indexed: 12/31/2022]
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58
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Abstract
Next year (2017), the micronutrient Selenium (Se) is celebrating its birthday—i.e., 200 years after first being identified by the Swedish chemist Jöns Jakob Berzelius. Despite its impressive age, research into the functions of this essential trace element is very alive and reaching out for new horizons. This special issue presents some recent fascinating, exciting, and promising developments in Se research in the form of eight original contributions and seven review articles. Collectively, aspects of Se supply, biochemical, physiological, and chemotherapeutic effects, and geobiological interactions are covered by leading scientists in the areas of nutritional, basic, and clinical research. It is obvious from the contributions that the bicentennial anniversary will celebrate a micronutrient still in its infancy with respect to being understood in terms of its biomedical importance.
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Affiliation(s)
- Lutz Schomburg
- Institute for Experimental Endocrinology, Charité Medical University Berlin, Suedring 10, CVK, D-13353 Berlin, Germany.
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59
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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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Puppala AK, French RL, Matthies D, Baxa U, Subramaniam S, Simonović M. Structural basis for early-onset neurological disorders caused by mutations in human selenocysteine synthase. Sci Rep 2016; 6:32563. [PMID: 27576344 PMCID: PMC5006159 DOI: 10.1038/srep32563] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 08/09/2016] [Indexed: 01/09/2023] Open
Abstract
Selenocysteine synthase (SepSecS) catalyzes the terminal reaction of selenocysteine, and is vital for human selenoproteome integrity. Autosomal recessive inheritance of mutations in SepSecS-Ala239Thr, Thr325Ser, Tyr334Cys and Tyr429*-induced severe, early-onset, neurological disorders in distinct human populations. Although harboring different mutant alleles, patients presented remarkably similar phenotypes typified by cerebellar and cerebral atrophy, seizures, irritability, ataxia, and extreme spasticity. However, it has remained unclear how these genetic alterations affected the structure of SepSecS and subsequently elicited the development of a neurological pathology. Herein, our biophysical and structural characterization demonstrates that, with the exception of Tyr429*, pathogenic mutations decrease protein stability and trigger protein misfolding. We propose that the reduced stability and increased propensity towards misfolding are the main causes for the loss of SepSecS activity in afflicted patients, and that these factors contribute to disease progression. We also suggest that misfolding of enzymes regulating protein synthesis should be considered in the diagnosis and study of childhood neurological disorders.
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Affiliation(s)
- Anupama K Puppala
- Department of Biochemistry an Molecular Genetics, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| | - Rachel L French
- Department of Biochemistry an Molecular Genetics, University of Illinois at Chicago, Chicago, Illinois 60607, USA
| | - Doreen Matthies
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ulrich Baxa
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sriram Subramaniam
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Miljan Simonović
- Department of Biochemistry an Molecular Genetics, University of Illinois at Chicago, Chicago, Illinois 60607, USA
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61
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Juszczuk-Kubiak E, Bujko K, Cymer M, Wicińska K, Gabryszuk M, Pierzchała M. Effect of Inorganic Dietary Selenium Supplementation on Selenoprotein and Lipid Metabolism Gene Expression Patterns in Liver and Loin Muscle of Growing Lambs. Biol Trace Elem Res 2016; 172:336-345. [PMID: 26701332 PMCID: PMC4930946 DOI: 10.1007/s12011-015-0592-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 12/14/2015] [Indexed: 12/15/2022]
Abstract
Effect of selenium (Se) supplementation on the selenoprotein and lipid metabolism gene expression patterns in ruminants, especially in lambs is not yet fully understood. The aim of study was to evaluate the effect of Se supplementation on the messenger RNA (mRNA) expression patterns of selected selenoproteins and genes related to lipid metabolism in growing lambs. The experiment was conducted on 48 Polish Merino lambs divided into two groups (n = 24): control (C)-lambs fed with a basal diet (BD) with no Se supplementation, and supplemented (S)-lambs fed with a BD, supplemented with 0.5 mg Se/kg as sodium selenate for 8 weeks. Expression of 12 selenoproteins and six genes related to lipid metabolism was analyzed in the liver and longissimus dorsi (LD) muscle of growing lambs by qPCR. Significant differences were found in the expression of GPX1, GPX2, SEPM, SEPW1, SEP15, SEPGS2, and TXNRD1 in the liver, and GPX1, SEPP1, SEPN1, SEPW1, SEP15, and MSRB1 in the LD muscle between S and C lambs. Se supplementation mainly upregulated SEPW1, SEP15 (P < 0.001; P < 0.01) mRNA expression in the liver, and GPX1, SEPP1, SEPN1, SEPW1 (P < 0.001; P < 0.01) in the muscle of S group. On the other hand, significant decrease in GPX2 (P < 0.01), SEPM (P < 0.001), and SEPHS2 (P < 0.01) mRNA expression levels were observed in the liver of S group of lambs. Se supplementation did not affect PON1, LXRα, and PPARα mRNA expression levels, but a significant increase in mRNA levels of APOE and LPL in the LD muscle (P < 0.05) as well as LPL (P < 0.05) in the liver were noticed in the group of Se supplemented lambs. Our study confirmed that, in lambs, similarly to other species, mRNA expression patterns of several selenoproteins highly depend on dietary Se levels, and their expression is ruled by hierarchical principles and tissue-specific mechanisms. Moreover, the study showed that changes Se intake leads to different levels of genes expression related with lipid metabolism.
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Affiliation(s)
- Edyta Juszczuk-Kubiak
- Laboratory of Genome and Transcriptome Sequencing, Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland.
| | - Kamila Bujko
- Laboratory of Genome and Transcriptome Sequencing, Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
| | - Monika Cymer
- Laboratory of Genome and Transcriptome Sequencing, Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
| | - Krystyna Wicińska
- Laboratory of Genome and Transcriptome Sequencing, Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
| | - Mirosław Gabryszuk
- Department of Animal Breeding, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
| | - Mariusz Pierzchała
- Department of Genomics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, Poland
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62
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Wrobel JK, Power R, Toborek M. Biological activity of selenium: Revisited. IUBMB Life 2015; 68:97-105. [PMID: 26714931 DOI: 10.1002/iub.1466] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 12/05/2015] [Indexed: 12/22/2022]
Abstract
Selenium (Se) is an essential micronutrient that exerts multiple and complex effects on human health. Se is essential for human well-being largely due to its potent antioxidant, anti-inflammatory, and antiviral properties. The physiological functions of Se are carried out by selenoproteins, in which Se is specifically incorporated as the amino acid, selenocysteine. Importantly, both beneficial and toxic effects of Se have been reported suggesting that the mode of action of Se is strictly chemical form and concentration dependent. Additionally, there is a relatively narrow window between Se deficiency and toxicity and growing evidence suggests that Se health effects depend greatly on the baseline level of this micronutrient. Thus, Se supplementation is not an easy task and requires an individualized approach. It is essential that we continue to explore and better characterize Se containing compounds and mechanisms of action, which could be crucial for disease prevention and treatment.
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Affiliation(s)
- Jagoda K Wrobel
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Ronan Power
- Nutrigenomics Research Center, Alltech, Nicholasville, KY, USA
| | - Michal Toborek
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA.,Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
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