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Gureev AP, Sadovnikova IS, Chernyshova EV, Tsvetkova AD, Babenkova PI, Nesterova VV, Krutskikh EP, Volodina DE, Samoylova NA, Andrianova NV, Silachev DN, Plotnikov EY. Beta-Hydroxybutyrate Mitigates Sensorimotor and Cognitive Impairments in a Photothrombosis-Induced Ischemic Stroke in Mice. Int J Mol Sci 2024; 25:5710. [PMID: 38891898 PMCID: PMC11172083 DOI: 10.3390/ijms25115710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 05/21/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
The consequences of stroke include cognitive deficits and sensorimotor disturbances, which are largely related to mitochondrial impairments in the brain. In this work, we have shown that the mimetic of the ketogenic diet beta-hydroxybutyrate (βHB) can improve neurological brain function in stroke. At 3 weeks after photothrombotic stroke, mice receiving βHB with drinking water before and after surgery recovered faster in terms of sensorimotor functions assessed by the string test and static rods and cognitive functions assessed by the Morris water maze. At the same time, the βHB-treated mice had lower expression of some markers of astrocyte activation and inflammation (Gfap, Il-1b, Tnf). We hypothesize that long-term administration of βHB promotes the activation of the nuclear factor erythroid 2-related factor 2/antioxidant response element (Nrf2/ARE) pathway, which leads to increased expression of antioxidant genes targeting mitochondria and genes involved in signaling pathways necessary for the maintenance of synaptic plasticity. βHB partially maintained mitochondrial DNA (mtDNA) integrity during the first days after photothrombosis. However, in the following three weeks, the number of mtDNA damages increased in all experimental groups, which coincided with a decrease in Ogg1 expression, which plays an important role in mtDNA repair. Thus, we can assume that βHB is not only an important metabolite that provides additional energy to brain tissue during recovery from stroke under conditions of mitochondrial damage but also an important signaling molecule that supports neuronal plasticity and reduces neuroinflammation.
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Affiliation(s)
- Artem P. Gureev
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
- Laboratory of Metagenomics and Food Biotechnology, Voronezh State University of Engineering Technology, 394036 Voronezh, Russia
| | - Irina S. Sadovnikova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
| | - Ekaterina V. Chernyshova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
| | - Arina D. Tsvetkova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
| | - Polina I. Babenkova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
| | - Veronika V. Nesterova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
| | - Ekaterina P. Krutskikh
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
| | - Daria E. Volodina
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
| | - Natalia A. Samoylova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.)
| | - Nadezda V. Andrianova
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Denis N. Silachev
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
| | - Egor Y. Plotnikov
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
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Wu Y, Shi H, Xu Y, Wen R, Gong M, Hong G, Xu S. Selenoprotein Gene mRNA Expression Evaluation During Renal Ischemia-Reperfusion Injury in Rats and Ebselen Intervention Effects. Biol Trace Elem Res 2023; 201:1792-1805. [PMID: 35553364 DOI: 10.1007/s12011-022-03275-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/29/2022] [Indexed: 12/21/2022]
Abstract
Effects of selenoproteins on many renal diseases have been reported. However, their role in renal ischemia-reperfusion (I/R) injury is unclear. The present study was performed to investigate the impact of ebselen and renal I/R injury on the expression of selenoproteins. Sprague-Dawley rats were pretreated with or without ebselen (10 mg/kg) through a daily single oral administration from 3 days before renal I/R surgery. RT-qPCR (real-time quantitative PCR) was performed to determine the mRNA expression of 25 selenoprotein genes in the renal tissues. The expression levels of two selenoproteins, including GPX3 (glutathione peroxidase 3) and DIO1 (iodothyronine deiodinase 1), were evaluated by Western blot or/and IHF (immunohistofluorescence) assays. Furthermore, renal function, renal damage, oxidative stress, and apoptosis were assessed. The results showed that in renal I/R injury, the mRNA levels of 15 selenoprotein genes (GPX1, GPX3, GPX4, DIO1, DIO2, TXNRD2, TXNRD3, SEPHS2, MSRB1, SELENOF, SELENOK, SELENOO, SELENOP, SELENOS, and SELENOT) were decreased, whereas those of eight selenoprotein genes (GPX2, GPX6, DIO3, TXNRD1, SELENOH, SELENOM, SELENOV, and SELENOW) were increased. I/R also induced a reduction in the expression levels of GPX3 and DIO1 proteins. In addition, our results indicated that ebselen reversed the changes in those selenoprotein genes, excluding SELENOH, SELENOM, SELENOP, and SELENOT, in renal I/R injury and alleviated I/R-induced renal dysfunction, tissue damage, oxidative stress, and apoptosis. To our knowledge, this is the first study to investigate the changes of 25 mammalian selenoprotein genes in renal I/R injury kidneys. The present study also provided more evidence for the roles of ebselen against renal I/R injury.
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Affiliation(s)
- Yikun Wu
- School of Medicine, Guizhou University, Guiyang, Guizhou, China
| | - Hua Shi
- Department of Urology, Tongren City People's Hospital, Tongren, Guizhou, China
| | - Yuangao Xu
- Department of Urology, Guizhou Provincial People's Hospital, No.83, East Zhongshan Road, Guiyang, Guizhou, China
| | - Rao Wen
- Department of Urology, Guizhou Provincial People's Hospital, No.83, East Zhongshan Road, Guiyang, Guizhou, China
| | - Maodi Gong
- Department of Urology, Guizhou Provincial People's Hospital, No.83, East Zhongshan Road, Guiyang, Guizhou, China
| | - Guangyi Hong
- School of Medicine, Guizhou University, Guiyang, Guizhou, China
| | - Shuxiong Xu
- Department of Urology, Guizhou Provincial People's Hospital, No.83, East Zhongshan Road, Guiyang, Guizhou, China.
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Huang J, Zheng C, Luo R, Cao X, Liu M, Gu Q, Li F, Li J, Wu X, Yang Z, Shen X, Li X. Integrative analysis of multiomics data identifies selenium-related gene ALAD associating with keshan disease. Free Radic Biol Med 2022; 193:702-719. [PMID: 36395956 DOI: 10.1016/j.freeradbiomed.2022.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022]
Abstract
Keshan disease is an endemic fatal dilated cardiomyopathy that can cause heart enlargement, heart failure, and cardiogenic death. Selenium deficiency is considered to be the main cause of Keshan disease. However, the molecular mechanism underlying Keshan disease remains unclear. Our whole-exome sequencing from 68 patients with Keshan disease and 100 controls found 199 candidate genes by gene-level burden tests. Interestingly, using multiomics data, the selenium-related gene ALAD (δ-aminolevulinic acid dehydratase) was the only candidate causative gene identified by three different analysis approaches. Based on single-cell transcriptome data, ALAD was highly expressed in cardiomyocytes and double mutations of human ALAD dramatically reduced its enzyme activity in vitro compared to negative control. Functional analysis of ALAD inhibition in mice resulted in a Keshan phenotype with left ventricular enlargement and cardiac dysfunction, whereas administration of sodium selenite markedly reversed the changes caused by ALAD inhibition. In addition, sodium selenite reversed Keshan phenotypes by affecting energy metabolism and mitochondrial function in mice as shown by the transcriptomic and proteomic data and the ultrastructure of cardiac myocytes. Our findings are the first to demonstrate that the selenium-related gene ALAD is essential for cardiac function by maintaining normal mitochondrial activity, providing strong molecular evidence supporting the hypothesis of selenium deficiency in Keshan disease. These results identified ALAD as a novel target for therapeutic intervention in Keshan disease and Keshan disease-related dilated cardiomyopathy.
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Affiliation(s)
- Jichang Huang
- Institute of Geriatric Cardiovascular Disease, Chengdu Medical College, Chengdu, Sichuan, China
| | - Chenqing Zheng
- Biostatistics Group, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Rong Luo
- Institute of Geriatric Cardiovascular Disease, Chengdu Medical College, Chengdu, Sichuan, China
| | - Xin Cao
- School of Acupuncture-Moxibustion and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Mingjiang Liu
- Department of Cardiology, Hospital of the University of Electronic Science and Technology of China and Sichuan Provincial People's Hospital, Chengdu, Sichuan, China
| | - Qingquan Gu
- Shenzhen Rare Disease Engineering Research Center of Metabolomics in Precision Medicine, Shenzhen, China; Shenzhen Aone Medical Laboratory Co, Ltd, Shenzhen, China
| | - Feng Li
- Sichuan Center for Disease Control and Prevention, Chengdu, Sichuan, China
| | - Jinshu Li
- The Center for Heart Development, Hunan Normal University, Changsha, Hunan, China
| | - Xiushan Wu
- The Center for Heart Development, Hunan Normal University, Changsha, Hunan, China; Guangdong Provincial Key Laboratory of Pathogenesis, Targeted Prevention and Treatment of Heart Disease, Guangzhou, Guangdong, China
| | - Zhenglin Yang
- Sichuan Provincial Key Laboratory for Human Disease Gene Study, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
| | - Xia Shen
- Biostatistics Group, School of Life Sciences, Sun Yat-sen University, Guangzhou, China; State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China; Center for Intelligent Medicine Research, Greater Bay Area Institute of Precision Medicine (Guangzhou), Fudan University, China.
| | - Xiaoping Li
- Department of Cardiology, Hospital of the University of Electronic Science and Technology of China and Sichuan Provincial People's Hospital, Chengdu, Sichuan, China.
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Liu Q, Sun Y, Zhu Y, Qiao S, Cai J, Zhang Z. Melatonin relieves liver fibrosis induced by Txnrd3 knockdown and nickel exposure via IRE1/NF-kB/NLRP3 and PERK/TGF-β1 axis activation. Life Sci 2022; 301:120622. [PMID: 35537548 DOI: 10.1016/j.lfs.2022.120622] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 12/20/2022]
Abstract
AIMS Nickel(Ni) accumulates in the environment due to human activities such as electroplating, alloy production, stainless steel, Ni‑cadmium batteries and industrial production. Ni enriched in humans and animals through food chains, poses a serious health threat. Txnrd3, as a member of the thioredoxin reductase family, has long been thought to be testicular specific and involved in sperm maturation. However, its role in liver diseases still unknown. Melatonin exerts its antioxidant effects directly through its ability to clear free radicals and protects the liver from oxidative damage. Hepatic fibrosis with an ever-increasing incidence year by year, is correlating with outcome and risk of hepatocellular carcinoma. MATERIALS AND METHODS In this study, 60 8-week-old male C57BL/6 wild-type mice and 60 Txnrd3-/- mice were randomly divided into three groups, respectively. Control group was gavaged with distilled water, 10 mg/kg NiCl2 in Ni group, Ni + Mel group treated with 2 mg/kg melatonin in the morning, 10 mg/kg NiCl2 in the afternoon, serum and tissue was extracted after 21 days. KEY FINDINGS Results showed that liver function was significantly worse after Ni exposure, morphological and masson staining showed more significant liver fibrosis in Txnrd3-/- mice, damage of organelles in hepatocytes was observed. qPCR and WB results showed activation of the IRE1/Nuclear factor-kappa B/NLRP3 axis during Ni exposure lead to hepatocyte pyroptosis, while upregulation of PERK/TGF-β promoted liver fibrosis process and Txnrd3 knockout exacerbated liver damage during Ni exposure. SIGNIFICANCE The above results will lay the theoretical foundation for the monitoring and clinical treatment of Ni exposure.
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Affiliation(s)
- Qi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Yue Sun
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Yue Zhu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Senqiu Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Jingzeng Cai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China; Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, PR China.
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What Role do Mitochondria have in Diastolic Dysfunction? Implications for Diabetic Cardiomyopathy and Heart Failure with Preserved Ejection Function (HFpEF). J Cardiovasc Pharmacol 2022; 79:399-406. [DOI: 10.1097/fjc.0000000000001228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/08/2022] [Indexed: 11/26/2022]
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Maternal malnutrition and anaemia in India: dysregulations leading to the 'thin-fat' phenotype in newborns. J Nutr Sci 2021; 10:e91. [PMID: 34733503 PMCID: PMC8532069 DOI: 10.1017/jns.2021.83] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 09/05/2021] [Accepted: 09/10/2021] [Indexed: 12/21/2022] Open
Abstract
Maternal and child malnutrition and anaemia remain the leading factors for health loss in India. Low birth weight (LBW) offspring of women suffering from chronic malnutrition and anaemia often exhibit insulin resistance and infantile stunting and wasting, together with increased risk of developing cardiometabolic disorders in adulthood. The resulting self-perpetuating and highly multifactorial disease burden cannot be remedied through uniform dietary recommendations alone. To inform approaches likely to alleviate this disease burden, we implemented a systems-analytical approach that had already proven its efficacy in multiple published studies. We utilised previously published qualitative and quantitative analytical results of rural and urban field studies addressing maternal and infantile metabolic and nutritional parameters to precisely define the range of pathological phenotypes encountered and their individual biological characteristics. These characteristics were then integrated, via extensive literature searches, into metabolic and physiological mechanisms to identify the maternal and foetal metabolic dysregulations most likely to underpin the ‘thin-fat’ phenotype in LBW infants and its associated pathological consequences. Our analyses reveal hitherto poorly understood maternal nutrition-dependent mechanisms most likely to promote and sustain the self-perpetuating high disease burden, especially in the Indian population. This work suggests that it most probably is the metabolic consequence of ‘ill-nutrition’ – the recent and rapid dietary shifts to high salt, high saturated fats and high sugar but low micronutrient diets – over an adaptation to ‘thrifty metabolism’ which must be addressed in interventions aiming to significantly alleviate the leading risk factors for health deterioration in India.
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Key Words
- 5-mTHF, 5-methyltetrahydrofolate
- Anaemia
- BAT, brown adipocyte tissue
- EAA, essential amino acids
- FA, fatty acid
- GSH, glutathione
- Hcy, homocysteine
- LBW, low birth weight
- Low birth weight
- Malnutrition
- PE, phosphatidylethanolamine
- Pathological mechanisms
- Physiological programming
- SAM, S-adenosyl methionine
- TG, triacylglycerol
- WAT, white adipocyte tissue
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Baranowska M, Koziara Z, Suliborska K, Chrzanowski W, Wormstone M, Namieśnik J, Bartoszek A. Interactions between polyphenolic antioxidants quercetin and naringenin dictate the distinctive redox-related chemical and biological behaviour of their mixtures. Sci Rep 2021; 11:12282. [PMID: 34112813 PMCID: PMC8192515 DOI: 10.1038/s41598-021-89314-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 04/21/2021] [Indexed: 02/08/2023] Open
Abstract
Food synergy concept is suggested to explain observations that isolated antioxidants are less bioactive than real foods containing them. However, mechanisms behind this discrepancy were hardly studied. Here, we demonstrate the profound impact of interactions between two common food flavonoids (individual: aglycones quercetin-Q and naringenin-N- or their glycosides rutin-R and naringin-N+ vs. mixed: QN- and RN+) on their electrochemical properties and redox-related bioactivities. N- and N+ seemed weak antioxidants individually, yet in both chemical and cellular tests (DPPH and CAA, respectively), they increased reducing activity of mixtures synergistically. In-depth measurements (differential pulse voltammetry) pointed to kinetics of oxidation reaction as decisive factor for antioxidant power. In cellular (HT29 cells) tests, the mixtures exhibited properties of a new substance rather than those of components. Pure flavonoids did not influence proliferation; mixtures stimulated cell growth. Individual flavonoids tended to decrease global DNA methylation with growing concentration; this effect was more pronounced for mixtures, but not concentration-dependent. In nutrigenomic studies, expression of gene set affected by QN- differed entirely from common genes modulated by individual components. These results question the current approach of predicting bioactivity of mixtures based on research with isolated antioxidants.
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Affiliation(s)
- Monika Baranowska
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - Zuzanna Koziara
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - Klaudia Suliborska
- Department of Physical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Gdańsk, Poland
| | - Wojciech Chrzanowski
- Department of Physical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Gdańsk, Poland
| | - Michael Wormstone
- School of Biological Sciences, Faculty of Science, University of East Anglia, Norwich, UK
| | | | - Agnieszka Bartoszek
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.
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From Mitochondria to Atherosclerosis: The Inflammation Path. Biomedicines 2021; 9:biomedicines9030258. [PMID: 33807807 PMCID: PMC8000234 DOI: 10.3390/biomedicines9030258] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 02/26/2021] [Accepted: 02/27/2021] [Indexed: 12/11/2022] Open
Abstract
Inflammation is a key process in metazoan organisms due to its relevance for innate defense against infections and tissue damage. However, inflammation is also implicated in pathological processes such as atherosclerosis. Atherosclerosis is a chronic inflammatory disease of the arterial wall where unstable atherosclerotic plaque rupture causing platelet aggregation and thrombosis may compromise the arterial lumen, leading to acute or chronic ischemic syndromes. In this review, we will focus on the role of mitochondria in atherosclerosis while keeping inflammation as a link. Mitochondria are the main source of cellular energy. Under stress, mitochondria are also capable of controlling inflammation through the production of reactive oxygen species (ROS) and the release of mitochondrial components, such as mitochondrial DNA (mtDNA), into the cytoplasm or into the extracellular matrix, where they act as danger signals when recognized by innate immune receptors. Primary or secondary mitochondrial dysfunctions are associated with the initiation and progression of atherosclerosis by elevating the production of ROS, altering mitochondrial dynamics and energy supply, as well as promoting inflammation. Knowing and understanding the pathways behind mitochondrial-based inflammation in atheroma progression is essential to discovering alternative or complementary treatments.
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Zhang J, Saad R, Taylor EW, Rayman MP. Selenium and selenoproteins in viral infection with potential relevance to COVID-19. Redox Biol 2020; 37:101715. [PMID: 32992282 PMCID: PMC7481318 DOI: 10.1016/j.redox.2020.101715] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/03/2020] [Accepted: 09/05/2020] [Indexed: 02/07/2023] Open
Abstract
Selenium is a trace element essential to human health largely because of its incorporation into selenoproteins that have a wide range of protective functions. Selenium has an ongoing history of reducing the incidence and severity of various viral infections; for example, a German study found selenium status to be significantly higher in serum samples from surviving than non-surviving COVID-19 patients. Furthermore, a significant, positive, linear association was found between the cure rate of Chinese patients with COVID-19 and regional selenium status. Moreover, the cure rate continued to rise beyond the selenium intake required to optimise selenoproteins, suggesting that selenoproteins are probably not the whole story. Nonetheless, the significantly reduced expression of a number of selenoproteins, including those involved in controlling ER stress, along with increased expression of IL-6 in SARS-CoV-2 infected cells in culture suggests a potential link between reduced selenoprotein expression and COVID-19-associated inflammation. In this comprehensive review, we describe the history of selenium in viral infections and then go on to assess the potential benefits of adequate and even supra-nutritional selenium status. We discuss the indispensable function of the selenoproteins in coordinating a successful immune response and follow by reviewing cytokine excess, a key mediator of morbidity and mortality in COVID-19, and its relationship to selenium status. We comment on the fact that the synthetic redox-active selenium compound, ebselen, has been found experimentally to be a strong inhibitor of the main SARS-CoV-2 protease that enables viral maturation within the host. That finding suggests that redox-active selenium species formed at high selenium intake might hypothetically inhibit SARS-CoV-2 proteases. We consider the tactics that SARS-CoV-2 could employ to evade an adequate host response by interfering with the human selenoprotein system. Recognition of the myriad mechanisms by which selenium might potentially benefit COVID-19 patients provides a rationale for randomised, controlled trials of selenium supplementation in SARS-CoV-2 infection.
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Affiliation(s)
- Jinsong Zhang
- Key Laboratory of Tea Plant Biology and Utilization, School of Tea & Food Science, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, PR China
| | - Ramy Saad
- Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, GU2 7XH, UK; Royal Sussex County Hospital, Brighton, BN2 5BE, UK
| | - Ethan Will Taylor
- Department of Chemistry and Biochemistry, University of North Carolina Greensboro, Greensboro, NC 27402, USA
| | - Margaret P Rayman
- Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, GU2 7XH, UK.
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Pamenter ME, Hall JE, Tanabe Y, Simonson TS. Cross-Species Insights Into Genomic Adaptations to Hypoxia. Front Genet 2020; 11:743. [PMID: 32849780 PMCID: PMC7387696 DOI: 10.3389/fgene.2020.00743] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 06/22/2020] [Indexed: 12/13/2022] Open
Abstract
Over millions of years, vertebrate species populated vast environments spanning the globe. Among the most challenging habitats encountered were those with limited availability of oxygen, yet many animal and human populations inhabit and perform life cycle functions and/or daily activities in varying degrees of hypoxia today. Of particular interest are species that inhabit high-altitude niches, which experience chronic hypobaric hypoxia throughout their lives. Physiological and molecular aspects of adaptation to hypoxia have long been the focus of high-altitude populations and, within the past decade, genomic information has become increasingly accessible. These data provide an opportunity to search for common genetic signatures of selection across uniquely informative populations and thereby augment our understanding of the mechanisms underlying adaptations to hypoxia. In this review, we synthesize the available genomic findings across hypoxia-tolerant species to provide a comprehensive view of putatively hypoxia-adaptive genes and pathways. In many cases, adaptive signatures across species converge on the same genetic pathways or on genes themselves [i.e., the hypoxia inducible factor (HIF) pathway). However, specific variants thought to underlie function are distinct between species and populations, and, in most cases, the precise functional role of these genomic differences remains unknown. Efforts to standardize these findings and explore relationships between genotype and phenotype will provide important clues into the evolutionary and mechanistic bases of physiological adaptations to environmental hypoxia.
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Affiliation(s)
- Matthew E. Pamenter
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
- Ottawa Brain and Mind Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - James E. Hall
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine, University of California, San Diego, San Diego, CA, United States
| | - Yuuka Tanabe
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine, University of California, San Diego, San Diego, CA, United States
| | - Tatum S. Simonson
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine, University of California, San Diego, San Diego, CA, United States
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Baranowska M, Suliborska K, Todorovic V, Kusznierewicz B, Chrzanowski W, Sobajic S, Bartoszek A. Interactions between bioactive components determine antioxidant, cytotoxic and nutrigenomic activity of cocoa powder extract. Free Radic Biol Med 2020; 154:48-61. [PMID: 32360591 DOI: 10.1016/j.freeradbiomed.2020.04.022] [Citation(s) in RCA: 8] [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: 02/27/2020] [Revised: 04/23/2020] [Accepted: 04/23/2020] [Indexed: 12/25/2022]
Abstract
Numerous studies have shown, rather disappointingly, that isolated bioactive phytochemicals are not as biologically effective as natural plant products. Such a discrepancy may be explained by the concept of food synergy, which was verified in this research for cocoa extract versus its major components with regard to cancer chemoprevention. The evaluation embraced the relationship between redox properties evaluated in cell-free systems with the aid of free radicals scavenging method and differential pulse voltammetry, and redox associated anticarcinogenic activities (cellular antioxidant activity, cytotoxicity, nutrigenomic activity) in human colon adenocarcinoma cell line exposed to either cocoa powder extract or artificial mixtures of cocoa bioactives at matching concentrations. In contrast to expectations, our results showed that the stepwise enrichment with antioxidants caused no gradual increase in the antioxidant activity of the model mixtures; also, these model mixtures did not reach the reducing potential of cocoa in the cell-free systems or cellular model employed. Further, the biological activities examined in colon adenocarcinoma cells did not alter in a stepwise manner that could reflect the gradual changes in composition of bioactive ingredients. In conclusion, the experiments presented here showed that the growing complexity of a mixture of phytochemicals seems to create a new redox bioactive substance rather than enrich the mixture with new activities, characteristic of the compound added. It follows that no simple, predictable relationship can be expected between the chemopreventive potential and the composition of real food items containing a complicated set of non-toxic redox active ingredients. Our observations suggest that the interactions between different bioactive compounds and food matrix components are cooperating factors determining the final bioactivity of foods.
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Affiliation(s)
- Monika Baranowska
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland.
| | - Klaudia Suliborska
- Department of Physical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Vanja Todorovic
- Department of Bromatology, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Barbara Kusznierewicz
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Wojciech Chrzanowski
- Department of Physical Chemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Sladjana Sobajic
- Department of Bromatology, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Agnieszka Bartoszek
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
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Pfeffer TJ, Schlothauer S, Pietzsch S, Schaufelberger M, Auber B, Ricke-Hoch M, List M, Berliner D, Abou Moulig V, König T, Arany Z, Sliwa K, Bauersachs J, Hilfiker-Kleiner D. Increased Cancer Prevalence in Peripartum Cardiomyopathy. JACC: CARDIOONCOLOGY 2019; 1:196-205. [PMID: 34396183 PMCID: PMC8352111 DOI: 10.1016/j.jaccao.2019.09.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 08/23/2019] [Accepted: 09/09/2019] [Indexed: 12/11/2022]
Abstract
Objectives This study was designed to analyze the prevalence and potential genetic basis of cancer and heart failure in peripartum cardiomyopathy (PPCM). Background PPCM manifests as heart failure late in pregnancy or postpartum in women without previous heart disease. Methods Clinical history and cancer prevalence were evaluated in a cohort of 236 PPCM patients from Germany and Sweden. Exome sequencing assessed variants in 133 genes associated with cancer predisposition syndromes (CPS) and in 115 genes associated with dilated/hypertrophic cardiomyopathy (DCM/HCM) in 14 PPCM patients with a history of cancer, and in 6 PPCM patients without a history of cancer. Results The prevalence of cancer was 16-fold higher (8.9%, 21 of 236 patients) in PPCM patients compared to age-matched women (German cancer registry, Robert-Koch-Institute: 0.59%; p < 0.001). Cancer before PPCM occurred in 12 of 21 patients of whom 11 obtained cardiotoxic cancer therapies. Of those, 17% fully recovered cardiac function by 7 ± 2 months of follow-up compared to 55% of PPCM patients without cancer (p = 0.015). Cancer occurred after PPCM in 10 of 21 patients; 80% had left ventricular ejection fraction of ≥50% after cancer therapy. Whole-exome sequencing in 14 PPCM patients with cancer revealed that 43% (6 of 14 patients) carried likely pathogenic (Class IV) or pathogenic (Class V) gene variants associated with DCM/HCM in CPT2, DSP, MYH7, TTN, and/or with CPS in ATM, ERCC5, NBN, RECQL4, and SLX4. All CPS variants affected DNA damage response genes. Conclusions Cardiotoxic cancer therapy before PPCM is associated with delayed full recovery. The high cancer prevalence in PPCM is linked to likely pathogenic/pathogenic gene variants associated with DCM/HCM and/or CPS/DNA damage response-related cancer risk. This may warrant genetic testing and screening for heart failure in pregnant women with a cancer history and screening for cancer in PPCM patients.
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Key Words
- ATM, ataxia telangiectasia mutated
- BMBF, Bundesministerium für Bildung und Forschung
- BRCA1, breast cancer 1
- CPS, cancer predisposition syndrome
- DCM, dilated cardiomyopathy
- DDR, DNA damage response
- DFG, Deutsche Forschungsgesellschaft
- ERCC5, excision repair cross-complementing rodent repair deficiency
- FANCA, Fanconi anemia, complementation group
- FKRP, fukutin-related protein
- HCM, hypertrophic cardiomyopathy
- HTX, heart transplantation
- LVAD, left ventricular assist device
- LVEF, left ventricular ejection fraction
- PPCM, peripartum cardiomyopathy
- RECQL4, ATP-dependent DNA helicase Q4
- RYR1, ryanodine receptor 1
- SLX4, structure-specific endonuclease subunit SLX4
- TXNRD2, thioredoxin reductase 2
- VUS, variants of unknown significance
- cancer
- cardiotoxicity
- genetics
- peripartum cardiomyopathy
- whole-exome sequencing
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Affiliation(s)
- Tobias J Pfeffer
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Stella Schlothauer
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Stefan Pietzsch
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Maria Schaufelberger
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Bernd Auber
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Melanie Ricke-Hoch
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Manuel List
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Dominik Berliner
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Valeska Abou Moulig
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Tobias König
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Zolt Arany
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Karen Sliwa
- Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
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Leonardi A, Evke S, Lee M, Melendez JA, Begley TJ. Epitranscriptomic systems regulate the translation of reactive oxygen species detoxifying and disease linked selenoproteins. Free Radic Biol Med 2019; 143:573-593. [PMID: 31476365 PMCID: PMC7650020 DOI: 10.1016/j.freeradbiomed.2019.08.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 02/07/2023]
Abstract
Here we highlight the role of epitranscriptomic systems in post-transcriptional regulation, with a specific focus on RNA modifying writers required for the incorporation of the 21st amino acid selenocysteine during translation, and the pathologies linked to epitranscriptomic and selenoprotein defects. Epitranscriptomic marks in the form of enzyme-catalyzed modifications to RNA have been shown to be important signals regulating translation, with defects linked to altered development, intellectual impairment, and cancer. Modifications to rRNA, mRNA and tRNA can affect their structure and function, while the levels of these dynamic tRNA-specific epitranscriptomic marks are stress-regulated to control translation. The tRNA for selenocysteine contains five distinct epitranscriptomic marks and the ALKBH8 writer for the wobble uridine (U) has been shown to be vital for the translation of the glutathione peroxidase (GPX) and thioredoxin reductase (TRXR) family of selenoproteins. The reactive oxygen species (ROS) detoxifying selenocysteine containing proteins are a prime examples of how specialized translation can be regulated by specific tRNA modifications working in conjunction with distinct codon usage patterns, RNA binding proteins and specific 3' untranslated region (UTR) signals. We highlight the important role of selenoproteins in detoxifying ROS and provide details on how epitranscriptomic marks and selenoproteins can play key roles in and maintaining mitochondrial function and preventing disease.
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Affiliation(s)
- Andrea Leonardi
- Colleges of Nanoscale Science and Engineering, University at Albany, State University of New York, Albany, NY, USA
| | - Sara Evke
- Colleges of Nanoscale Science and Engineering, State University of New York Polytechnic Institute, Albany, NY, USA
| | - May Lee
- Colleges of Nanoscale Science and Engineering, State University of New York Polytechnic Institute, Albany, NY, USA
| | - J Andres Melendez
- Colleges of Nanoscale Science and Engineering, State University of New York Polytechnic Institute, Albany, NY, USA.
| | - Thomas J Begley
- Department of Biological Sciences, University at Albany, State University of New York, Albany, NY, USA; RNA Institute, University at Albany, State University of New York, Albany, NY, USA.
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Gorbenko NI, Borikov OY, Ivanova OV. The effect of quercetin on oxidative stress markers and mitochondrial permeability transition in the heart of rats with type 2 diabetes. UKRAINIAN BIOCHEMICAL JOURNAL 2019. [DOI: 10.15407/ubj91.05.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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15
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Otto PI, Guimarães SEF, Verardo LL, Azevedo ALS, Vandenplas J, Sevillano CA, Marques DBD, Pires MDFA, de Freitas C, Verneque RS, Martins MF, Panetto JCC, Carvalho WA, Gobo DOR, da Silva MVGB, Machado MA. Genome-wide association studies for heat stress response in Bos taurus × Bos indicus crossbred cattle. J Dairy Sci 2019; 102:8148-8158. [PMID: 31279558 DOI: 10.3168/jds.2018-15305] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 05/05/2019] [Indexed: 12/13/2022]
Abstract
Heat stress is an important issue in the global dairy industry. In tropical areas, an alternative to overcome heat stress is the use of crossbred animals or synthetic breeds, such as the Girolando. In this study, we performed a genome-wide association study (GWAS) and post-GWAS analyses for heat stress in an experimental Gir × Holstein F2 population. Rectal temperature (RT) was measured in heat-stressed F2 animals, and the variation between 2 consecutive RT measurements (ΔRT) was used as the dependent variable. Illumina BovineSNP50v1 BeadChip (Illumina Inc., San Diego, CA) and single-SNP approach were used for GWAS. Post-GWAS analyses were performed by gene ontology terms enrichment and gene-transcription factor (TF) networks, generated from enriched TF. The breed origin of marker alleles in the F2 population was assigned using the breed of origin of alleles (BOA) approach. Heritability and repeatability estimates (± standard error) for ΔRT were 0.13 ± 0.08 and 0.29 ± 0.06, respectively. Association analysis revealed 6 SNP significantly associated with ΔRT. Genes involved with biological processes in response to heat stress effects (LIF, OSM, TXNRD2, and DGCR8) were identified as putative candidate genes. After performing the BOA approach, the 10% of F2 animals with the lowest breeding values for ΔRT were classified as low-ΔRT, and the 10% with the highest breeding values for ΔRT were classified as high-ΔRT. On average, 49.4% of low-ΔRT animals had 2 alleles from the Holstein breed (HH), and 39% had both alleles from the Gir breed (GG). In high-ΔRT animals, the average proportion of animals for HH and GG were 1.4 and 50.2%, respectively. This study allowed the identification of candidate genes for ΔRT in Gir × Holstein crossbred animals. According to the BOA approach, Holstein breed alleles could be associated with better response to heat stress effects, which could be explained by the fact that Holstein animals are more affected by heat stress than Gir animals and thus require a genetic architecture to defend the body from the deleterious effects of heat stress. Future studies can provide further knowledge to uncover the genetic architecture underlying heat stress in crossbred cattle.
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Affiliation(s)
- Pamela I Otto
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa 36570-900, Brazil
| | - Simone E F Guimarães
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa 36570-900, Brazil
| | - Lucas L Verardo
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa 36570-900, Brazil
| | | | - Jeremie Vandenplas
- Wageningen University and Research Animal Breeding and Genomics, Wageningen 6700, the Netherlands
| | - Claudia A Sevillano
- Wageningen University and Research Animal Breeding and Genomics, Wageningen 6700, the Netherlands; Topigs Norsvin Research Center, Beuningen 6640, the Netherlands
| | - Daniele B D Marques
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa 36570-900, Brazil
| | | | - Célio de Freitas
- Embrapa Dairy Cattle Research Center, Juiz de Fora 36038-330, Brazil
| | - Rui S Verneque
- Embrapa Dairy Cattle Research Center, Juiz de Fora 36038-330, Brazil
| | | | | | | | - Diego O R Gobo
- Department of Animal Science, Universidade Federal de Viçosa, Viçosa 36570-900, Brazil
| | | | - Marco A Machado
- Embrapa Dairy Cattle Research Center, Juiz de Fora 36038-330, Brazil.
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Jia JJ, Geng WS, Wang ZQ, Chen L, Zeng XS. The role of thioredoxin system in cancer: strategy for cancer therapy. Cancer Chemother Pharmacol 2019; 84:453-470. [DOI: 10.1007/s00280-019-03869-4] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 05/04/2019] [Indexed: 01/16/2023]
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17
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Scalcon V, Bindoli A, Rigobello MP. Significance of the mitochondrial thioredoxin reductase in cancer cells: An update on role, targets and inhibitors. Free Radic Biol Med 2018; 127:62-79. [PMID: 29596885 DOI: 10.1016/j.freeradbiomed.2018.03.043] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/21/2018] [Accepted: 03/24/2018] [Indexed: 12/26/2022]
Abstract
Thioredoxin reductase 2 (TrxR2) is a key component of the mitochondrial thioredoxin system able to transfer electrons to peroxiredoxin 3 (Prx3) in a reaction mediated by thioredoxin 2 (Trx2). In this way, both the level of hydrogen peroxide and thiol redox state are modulated. TrxR2 is often overexpressed in cancer cells conferring apoptosis resistance. Due to their exposed flexible arm containing selenocysteine, both cytosolic and mitochondrial TrxRs are inhibited by a large number of molecules. The various classes of inhibitors are listed and the molecules acting specifically on TrxR2 are extensively described. Particular emphasis is given to gold(I/III) complexes with phosphine, carbene or other ligands and to tamoxifen-like metallocifens. Also chemically unrelated organic molecules, including natural compounds and their derivatives, are taken into account. An important feature of many TrxR2 inhibitors is provided by their nature of delocalized lipophilic cations that allows their accumulation in mitochondria exploiting the organelle membrane potential. The consequences of TrxR2 inhibition are presented focusing especially on the impact on mitochondrial pathophysiology. Inhibition of TrxR2, by hindering the activity of Trx2 and Prx3, increases the mitochondrial concentration of reactive oxygen species and shifts the thiol redox state toward a more oxidized condition. This is reflected by alterations of specific targets involved in the release of pro-apoptotic factors such as cyclophilin D which acts as a regulator of the mitochondrial permeability transition pore. Therefore, the selective inhibition of TrxR2 could be utilized to induce cancer cell apoptosis.
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Affiliation(s)
- Valeria Scalcon
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi 58/b, 35131 Padova, Italy.
| | - Alberto Bindoli
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi 58/b, 35131 Padova, Italy; Institute of Neuroscience (CNR), Padova Section, c/o Department of Biomedical Sciences, Viale G. Colombo 3, 35131 Padova, Italy
| | - Maria Pia Rigobello
- Department of Biomedical Sciences, University of Padova, Via Ugo Bassi 58/b, 35131 Padova, Italy.
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18
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Baranowska M, Suliborska K, Chrzanowski W, Kusznierewicz B, Namieśnik J, Bartoszek A. The relationship between standard reduction potentials of catechins and biological activities involved in redox control. Redox Biol 2018; 17:355-366. [PMID: 29803149 PMCID: PMC6007051 DOI: 10.1016/j.redox.2018.05.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/01/2018] [Accepted: 05/12/2018] [Indexed: 01/03/2023] Open
Abstract
Redox homeostasis involves factors that ensure proper function of cells. The excess reactive oxygen species (ROS) leads to oxidative stress and increased risk of oxidative damage to cellular components. In contrast, upon reductive stress, insufficient ROS abundance may result in faulty cell signalling. It may be expected that dietary antioxidants, depending on their standard reduction potentials (E°), will affect both scenarios. In our study, for the first time, we systematically tested the relationship among E°, chemical properties, and biological effects in HT29 cells for a series of structurally different catechins and a major endogenous antioxidant - glutathione (GSH), at both physiological and dietary concentrations. Among chemical antioxidant activity tests, the strongest correlation with E° was seen using a DPPH assay. The values of E° were also highly correlated with cellular antioxidant activity (CAA) values determined in HT29 cells. Our results indicated that physiological concentrations (1-10 µM) of tested catechins stabilized the redox status of cells, which was not exhibited at higher concentrations. This stabilization of redox homeostasis was mirrored by constant, dose and E° independent CAA values, uninhibited growth of HT29 cells, modulation of hydrogen peroxide-induced DNA damage, as well as effects at the genomic level, where either up-regulation of three redox-related genes (ALB, CCL5, and HSPA1A) out of 84 in the array (1 µM) or no effect (10 µM) was observed for catechins. Higher catechin concentrations (over 10 µM) increased CAA values in a dose- and E°-dependent manner, caused cell growth inhibition, but surprisingly did not protect HT29 cells against reactive oxygen species (ROS)-induced DNA fragmentation. In conclusion, dose-dependent effects of dietary antioxidants and biological functions potentially modulated by them may become deregulated upon exposure to excessive doses.
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Affiliation(s)
- Monika Baranowska
- Department of Food Chemistry, Technology and Biotechnology, Gdansk University of Technology, Gdansk, Poland.
| | - Klaudia Suliborska
- Department of Physical Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Wojciech Chrzanowski
- Department of Physical Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Barbara Kusznierewicz
- Department of Food Chemistry, Technology and Biotechnology, Gdansk University of Technology, Gdansk, Poland
| | - Jacek Namieśnik
- Department of Analytical Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Agnieszka Bartoszek
- Department of Food Chemistry, Technology and Biotechnology, Gdansk University of Technology, Gdansk, Poland
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Mechanistic Role of Thioredoxin 2 in Heart Failure. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 982:265-276. [DOI: 10.1007/978-3-319-55330-6_14] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Zhao J, Yin M, Deng H, Jin FQ, Xu S, Lu Y, Mastrangelo MA, Luo H, Jin ZG. Cardiac Gab1 deletion leads to dilated cardiomyopathy associated with mitochondrial damage and cardiomyocyte apoptosis. Cell Death Differ 2015; 23:695-706. [PMID: 26517531 DOI: 10.1038/cdd.2015.143] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 09/01/2015] [Accepted: 09/18/2015] [Indexed: 01/28/2023] Open
Abstract
A vital step in the development of heart failure is the transition from compensatory cardiac hypertrophy to decompensated dilated cardiomyopathy (DCM) during cardiac remodeling under mechanical or pathological stress. However, the molecular mechanisms underlying the development of DCM and heart failure remain incompletely understood. In the present study, we investigate whether Gab1, a scaffolding adaptor protein, protects against hemodynamic stress-induced DCM and heat failure. We first observed that the protein levels of Gab1 were markedly reduced in hearts from human patients with DCM and from mice with experimental viral myocarditis in which DCM developed. Next, we generated cardiac-specific Gab1 knockout mice (Gab1-cKO) and found that Gab-cKO mice developed DCM in hemodynamic stress-dependent and age-dependent manners. Under transverse aorta constriction (TAC), Gab1-cKO mice rapidly developed decompensated DCM and heart failure, whereas Gab1 wild-type littermates exhibited adaptive left ventricular hypertrophy without changes in cardiac function. Mechanistically, we showed that Gab1-cKO mouse hearts displayed severe mitochondrial damages and increased cardiomyocyte apoptosis. Loss of cardiac Gab1 in mice impaired Gab1 downstream MAPK signaling pathways in the heart under TAC. Gene profiles further revealed that ablation of Gab1 in heart disrupts the balance of anti- and pro-apoptotic genes in cardiomyocytes. These results demonstrate that cardiomyocyte Gab1 is a critical regulator of the compensatory cardiac response to aging and hemodynamic stress. These findings may provide new mechanistic insights and potential therapeutic target for DCM and heart failure.
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Affiliation(s)
- J Zhao
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - M Yin
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - H Deng
- Center for Heart Lung Innovation/Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - F Q Jin
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - S Xu
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Y Lu
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - M A Mastrangelo
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - H Luo
- Center for Heart Lung Innovation/Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Z G Jin
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
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