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4-Hydroxycinnamic acid attenuates neuronal cell death by inducing expression of plasma membrane redox enzymes and improving mitochondrial functions. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2022.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Jindal S, Kerchev P, Berka M, Černý M, Botta HK, Laxmi A, Brzobohatý B. Type-A response regulators negatively mediate heat stress response by altering redox homeostasis in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2022; 13:968139. [PMID: 36212299 PMCID: PMC9539118 DOI: 10.3389/fpls.2022.968139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Abstract
Besides the long-standing role of cytokinins (CKs) as growth regulators, their current positioning at the interface of development and stress responses is coming into recognition. The current evidence suggests the notion that CKs are involved in heat stress response (HSR), however, the role of CK signaling components is still elusive. In this study, we have identified a role of the CK signaling components type-A Arabidopsis response regulators (ARRs) in HSR in Arabidopsis. The mutants of multiple type-A ARR genes exhibit improved basal and acquired thermotolerance and, altered response to oxidative stress in our physiological analyses. Through proteomics profiling, we show that the type-A arr mutants experience a 'stress-primed' state enabling them to respond more efficiently upon exposure to real stress stimuli. A substantial number of proteins that are involved in the heat-acclimatization process such as the proteins related to cellular redox status and heat shock, are already altered in the type-A arr mutants without a prior exposure to stress conditions. The metabolomics analyses further reveal that the mutants accumulate higher amounts of α-and γ-tocopherols, which are important antioxidants for protection against oxidative damage. Collectively, our results suggest that the type-A ARRs play an important role in heat stress response by affecting the redox homeostasis in Arabidopsis.
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Affiliation(s)
- Sunita Jindal
- Department of Molecular Biology and Radiobiology, Mendel University in Brno, Brno, Czechia
| | - Pavel Kerchev
- Department of Molecular Biology and Radiobiology, Mendel University in Brno, Brno, Czechia
| | - Miroslav Berka
- Department of Molecular Biology and Radiobiology, Mendel University in Brno, Brno, Czechia
| | - Martin Černý
- Department of Molecular Biology and Radiobiology, Mendel University in Brno, Brno, Czechia
| | | | - Ashverya Laxmi
- National Institute of Plant Genome Research, New Delhi, India
| | - Břetislav Brzobohatý
- Department of Molecular Biology and Radiobiology, Mendel University in Brno, Brno, Czechia
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How Is CYP17A1 Activity Altered in Autism? A Pilot Study to Identify Potential Pharmacological Targets. LIFE (BASEL, SWITZERLAND) 2022; 12:life12060867. [PMID: 35743898 PMCID: PMC9225657 DOI: 10.3390/life12060867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 05/30/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022]
Abstract
Background: Increasing evidence exists that higher levels of androgens can be found in individuals with autism. Evidence yields to a susceptible role of Cytochrome P450 17A1 (CYP17A1) with its catalyzation of the two distinct types of substrate oxidation by a hydroxylase activity (17-alpha hydroxylase) and C17/20 lyase activity. However, to what extent steps are altered in affected children with autism versus healthy controls remains to be elucidated. Methods: Urine samples from 48 boys with autism (BMI 19.1 ± 0.6 kg/m2, age 14.2 ± 0.5 years) and a matched cohort of 48 healthy boys (BMI 18.6 ± 0.3 kg/m2, 14.3 ± 0.5 years) as well as 16 girls with autism (BMI 17.5 ± 0.7 kg/m2, age 13.8 ± 1.0 years) and a matched cohort of 16 healthy girls (BMI 17.2 ± 0.8 kg/m2, age 13.2 ± 0.8 years) were analyzed for steroid hormone metabolites by gas chromatography-mass spectrometry. Results: The activity of 17-alpha Hydroxylase increased by almost 50%, whereas activity of 17/20 Lyase activity increased by around 150% in affected children with autism. Furthermore, the concentration of Cortisol was higher as compared to the average increase of the three metabolites TH-Corticosterone, 5α-TH-Corticosterone and TH-11β-DH-Corticosterone, indicating, in addition, a stimulation by the CRH-ACTH system despite a higher enzymatic activity. Discussion: As it was shown that oxidative stress increases the 17/20-lyase activity via p38α, a link between higher steroid hormone levels and oxidative stress can be established. However, as glucocorticoid as well as androgen metabolites showed higher values in subjects affected with autism as compared to healthy controls, the data indicate, despite higher CYP17A1 activity, the presence of increased substrate availability in line with the Cholesterol theory of autism.
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Kakouri AC, Votsi C, Oulas A, Nicolaou P, Aureli M, Lunghi G, Samarani M, Compagnoni GM, Salani S, Di Fonzo A, Christophides T, Tanteles GA, Zamba-Papanicolaou E, Pantzaris M, Spyrou GM, Christodoulou K. Transcriptomic characterization of tissues from patients and subsequent pathway analyses reveal biological pathways that are implicated in spastic ataxia. Cell Biosci 2022; 12:29. [PMID: 35277195 PMCID: PMC8917697 DOI: 10.1186/s13578-022-00754-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/04/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Spastic ataxias (SAs) encompass a group of rare and severe neurodegenerative diseases, characterized by an overlap between ataxia and spastic paraplegia clinical features. They have been associated with pathogenic variants in a number of genes, including GBA2. This gene codes for the non-lysososomal β-glucosylceramidase, which is involved in sphingolipid metabolism through its catalytic role in the degradation of glucosylceramide. However, the mechanism by which GBA2 variants lead to the development of SA is still unclear. METHODS In this work, we perform next-generation RNA-sequencing (RNA-seq), in an attempt to discover differentially expressed genes (DEGs) in lymphoblastoid, fibroblast cell lines and induced pluripotent stem cell-derived neurons derived from patients with SA, homozygous for the GBA2 c.1780G > C missense variant. We further exploit DEGs in pathway analyses in order to elucidate candidate molecular mechanisms that are implicated in the development of the GBA2 gene-associated SA. RESULTS Our data reveal a total of 5217 genes with significantly altered expression between patient and control tested tissues. Furthermore, the most significant extracted pathways are presented and discussed for their possible role in the pathogenesis of the disease. Among them are the oxidative stress, neuroinflammation, sphingolipid signaling and metabolism, PI3K-Akt and MAPK signaling pathways. CONCLUSIONS Overall, our work examines for the first time the transcriptome profiles of GBA2-associated SA patients and suggests pathways and pathway synergies that could possibly have a role in SA pathogenesis. Lastly, it provides a list of DEGs and pathways that could be further validated towards the discovery of disease biomarkers.
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Affiliation(s)
- Andrea C. Kakouri
- Department of Neurogenetics, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- Department of Bioinformatics, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
| | - Christina Votsi
- Department of Neurogenetics, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
| | - Anastasis Oulas
- Department of Bioinformatics, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
| | - Paschalis Nicolaou
- Department of Neurogenetics, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
| | - Massimo Aureli
- Department of Medical Biotechnology and Translational Medicine, University of Milan, 20090 Milano, Italy
| | - Giulia Lunghi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, 20090 Milano, Italy
| | - Maura Samarani
- Unité de Trafic Membranaire ét PathogénèseDépartement de Biologie Cellulaire et Infection, Institut Pasteur, 75015 Paris, France
| | - Giacomo M. Compagnoni
- Neurology Unit, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
- School of Medicine and Surgery, University of Milano-Bicocca, 20126 Monza, Milan Italy
| | - Sabrina Salani
- Neurology Unit, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Alessio Di Fonzo
- Neurology Unit, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | | | - George A. Tanteles
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- Department of Clinical Genetics and Genomics, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
| | - Eleni Zamba-Papanicolaou
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- Neurology Clinic D, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
| | - Marios Pantzaris
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- Neurology Clinic C, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
| | - George M. Spyrou
- Department of Bioinformatics, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
| | - Kyproula Christodoulou
- Department of Neurogenetics, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
- The Cyprus School of Molecular Medicine, The Cyprus Institute of Neurology and Genetics, 2370 Nicosia, Cyprus
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Penjweini R, Roarke B, Alspaugh G, Link KA, Andreoni A, Mori MP, Hwang PM, Sackett DL, Knutson JR. Intracellular imaging of metmyoglobin and oxygen using new dual purpose probe EYFP-Myoglobin-mCherry. JOURNAL OF BIOPHOTONICS 2022; 15:e202100166. [PMID: 34689421 PMCID: PMC8901566 DOI: 10.1002/jbio.202100166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 10/04/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
The biological relevance of nitric oxide (NO) and reactive oxygen species (ROS) in signaling, metabolic regulation, and disease treatment has become abundantly clear. The dramatic change in NO/ROS processing that accompanies a changing oxygen landscape calls for new imaging tools that can provide cellular details about both [O2 ] and the production of reactive species. Myoglobin oxidation to the met state by NO/ROS is a known sensor with absorbance changes in the visible range. We previously employed Förster resonance energy transfer to read out the deoxygenation/oxygenation of myoglobin, creating the subcellular [O2 ] sensor Myoglobin-mCherry. We now add the fluorescent protein EYFP to this sensor to create a novel probe that senses both met formation, a proxy for ROS/NO exposure, and [O2 ]. Since both proteins are present in the construct, it can also relieve users from the need to measure fluorescence lifetime, making [O2 ] sensing available to a wider group of laboratories.
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Affiliation(s)
- Rozhin Penjweini
- Laboratory of Advanced Microscopy and Biophotonics, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892-1412
| | - Branden Roarke
- Laboratory of Advanced Microscopy and Biophotonics, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892-1412
| | - Greg Alspaugh
- Laboratory of Advanced Microscopy and Biophotonics, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892-1412
| | - Katie A. Link
- Laboratory of Advanced Microscopy and Biophotonics, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892-1412
| | - Alessio Andreoni
- Laboratory of Advanced Microscopy and Biophotonics, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892-1412
- Laboratory of Optical Neurophysiology, Department of Biochemistry and Molecular Medicine, University of California Davis, Tupper Hall, Davis, CA 95616
| | - Mateus P. Mori
- Laboratory of Cardiovascular and Cancer Genetics, NHLBI, NIH, Bethesda, MD 20892-1412
| | - Paul M. Hwang
- Laboratory of Cardiovascular and Cancer Genetics, NHLBI, NIH, Bethesda, MD 20892-1412
| | - Dan L. Sackett
- Cytoskeletal Dynamics Group, Division of Basic and Translational Biophysics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda MD, 20892-0924
| | - Jay R. Knutson
- Laboratory of Advanced Microscopy and Biophotonics, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD 20892-1412
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Hyun DH, Lee J. A New Insight into an Alternative Therapeutic Approach to Restore Redox Homeostasis and Functional Mitochondria in Neurodegenerative Diseases. Antioxidants (Basel) 2021; 11:antiox11010007. [PMID: 35052511 PMCID: PMC8772965 DOI: 10.3390/antiox11010007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 11/16/2022] Open
Abstract
Neurodegenerative diseases are accompanied by oxidative stress and mitochondrial dysfunction, leading to a progressive loss of neuronal cells, formation of protein aggregates, and a decrease in cognitive or motor functions. Mitochondrial dysfunction occurs at the early stage of neurodegenerative diseases. Protein aggregates containing oxidatively damaged biomolecules and other misfolded proteins and neuroinflammation have been identified in animal models and patients with neurodegenerative diseases. A variety of neurodegenerative diseases commonly exhibits decreased activity of antioxidant enzymes, lower amounts of antioxidants, and altered cellular signalling. Although several molecules have been approved clinically, there is no known cure for neurodegenerative diseases, though some drugs are focused on improving mitochondrial function. Mitochondrial dysfunction is caused by oxidative damage and impaired cellular signalling, including that of peroxisome proliferator-activated receptor gamma coactivator 1α. Mitochondrial function can also be modulated by mitochondrial biogenesis and the mitochondrial fusion/fission cycle. Mitochondrial biogenesis is regulated mainly by sirtuin 1, NAD+, AMP-activated protein kinase, mammalian target of rapamycin, and peroxisome proliferator-activated receptor γ. Altered mitochondrial dynamics, such as increased fission proteins and decreased fusion products, are shown in neurodegenerative diseases. Due to the restrictions of a target-based approach, a phenotype-based approach has been performed to find novel proteins or pathways. Alternatively, plasma membrane redox enzymes improve mitochondrial function without the further production of reactive oxygen species. In addition, inducers of antioxidant response elements can be useful to induce a series of detoxifying enzymes. Thus, redox homeostasis and metabolic regulation can be important therapeutic targets for delaying the progression of neurodegenerative diseases.
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Tedesco I, Spagnuolo C, Russo GL, Russo M, Cervellera C, Moccia S. The Pro-Oxidant Activity of Red Wine Polyphenols Induces an Adaptive Antioxidant Response in Human Erythrocytes. Antioxidants (Basel) 2021; 10:antiox10050800. [PMID: 34070135 PMCID: PMC8158335 DOI: 10.3390/antiox10050800] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 12/21/2022] Open
Abstract
The protective effect of dealcoholized red wine on human health has been partially associated with its polyphenolic components, suggesting that the pool of polyphenols, including flavonoids and anthocyanins, can be responsible for the functional effects of this beverage. We hypothesize a new role of red wine polyphenols (RWp) in modulating the antioxidant potential of erythrocytes, protecting them against oxidative stress. We previously demonstrated that RWp activated the Plasma Membrane Redox System (PMRS), which is involved in neutralizing plasma free radicals. Here, we investigated the underlying mechanism triggered by RWp in the activation of PMRS via the involvement of GSH. Hence, treatment of human erythrocytes with RWp (73 μg/mL Gallic Acid Equivalents) increased GSH intracellular concentration, which depends upon the activation of glutathione reductase (GR) and glucose-6-phosphate dehydrogenase (G6PD), whose enzymatic activities increase of about 30% and 47%, respectively. Changes in the GSH pathway induced by RWp were associated with a slight but significant increase in reactive oxygen species (ROS). We conclude that the pro-oxidant effect of RWp promoted an adaptive stress response in human erythrocytes, which enhances their antioxidant defense.
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Baschiera E, Sorrentino U, Calderan C, Desbats MA, Salviati L. The multiple roles of coenzyme Q in cellular homeostasis and their relevance for the pathogenesis of coenzyme Q deficiency. Free Radic Biol Med 2021; 166:277-286. [PMID: 33667628 DOI: 10.1016/j.freeradbiomed.2021.02.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/13/2021] [Accepted: 02/26/2021] [Indexed: 12/11/2022]
Abstract
Coenzyme Q (CoQ) is a redox active lipid that plays a central role in cellular homeostasis. It was discovered more than 60 years ago because of its role as electron transporter in the mitochondrial respiratory chain. Since then it has become evident that CoQ has many other functions, not directly related to bioenergetics. It is a cofactor of several mitochondrial dehydrogenases involved in the metabolism of lipids, amino acids, and nucleotides, and in sulfide detoxification. It is a powerful antioxidant and it is involved in the control of programmed cell death by modulating both apoptosis and ferroptosis. CoQ deficiency is a clinically and genetically heterogeneous group of disorders characterized by the impairment of CoQ biosynthesis. CoQ deficient patients display defects in cellular bioenergetics, but also in the other pathways in which CoQ is involved. In this review we will focus on the functions of CoQ not directly related to the respiratory chain, and on how their impairment is relevant for the pathophysiology of CoQ deficiency. A better understanding of the complex set of events triggered by CoQ deficiency will allow to design novel approaches for the treatment of this condition.
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Affiliation(s)
- Elisa Baschiera
- Clinical Genetics Unit, Department of Women and Children's Health, University of Padova and IPR Città Della Speranza, Padova, Italy
| | - Ugo Sorrentino
- Clinical Genetics Unit, Department of Women and Children's Health, University of Padova and IPR Città Della Speranza, Padova, Italy
| | - Cristina Calderan
- Clinical Genetics Unit, Department of Women and Children's Health, University of Padova and IPR Città Della Speranza, Padova, Italy
| | - Maria Andrea Desbats
- Clinical Genetics Unit, Department of Women and Children's Health, University of Padova and IPR Città Della Speranza, Padova, Italy
| | - Leonardo Salviati
- Clinical Genetics Unit, Department of Women and Children's Health, University of Padova and IPR Città Della Speranza, Padova, Italy.
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Morris G, Walker AJ, Walder K, Berk M, Marx W, Carvalho AF, Maes M, Puri BK. Increasing Nrf2 Activity as a Treatment Approach in Neuropsychiatry. Mol Neurobiol 2021; 58:2158-2182. [PMID: 33411248 DOI: 10.1007/s12035-020-02212-w] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 11/16/2020] [Indexed: 02/07/2023]
Abstract
Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor encoded by NFE2L2. Under oxidative stress, Nrf2 does not undergo its normal cytoplasmic degradation but instead travels to the nucleus, where it binds to a DNA promoter and initiates transcription of anti-oxidative genes. Nrf2 upregulation is associated with increased cellular levels of glutathione disulfide, glutathione peroxidase, glutathione transferases, thioredoxin and thioredoxin reductase. Given its key role in governing the cellular antioxidant response, upregulation of Nrf2 has been suggested as a common therapeutic target in neuropsychiatric illnesses such as major depressive disorder, bipolar disorder and schizophrenia, which are associated with chronic oxidative and nitrosative stress, characterised by elevated levels of reactive oxygen species, nitric oxide and peroxynitrite. These processes lead to extensive lipid peroxidation, protein oxidation and carbonylation, and oxidative damage to nuclear and mitochondrial DNA. Intake of N-acetylcysteine, coenzyme Q10 and melatonin is accompanied by increased Nrf2 activity. N-acetylcysteine intake is associated with improved cerebral mitochondrial function, decreased central oxidative and nitrosative stress, reduced neuroinflammation, alleviation of endoplasmic reticular stress and suppression of the unfolded protein response. Coenzyme Q10, which acts as a superoxide scavenger in neuroglial mitochondria, instigates mitohormesis, ameliorates lipid peroxidation in the inner mitochondrial membrane, activates uncoupling proteins, promotes mitochondrial biogenesis and has positive effects on the plasma membrane redox system. Melatonin, which scavenges mitochondrial free radicals, inhibits mitochondrial nitric oxide synthase, restores mitochondrial calcium homeostasis, deacetylates and activates mitochondrial SIRT3, ameliorates increased permeability of the blood-brain barrier and intestine and counters neuroinflammation and glutamate excitotoxicity.
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Affiliation(s)
- G Morris
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - A J Walker
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - K Walder
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - M Berk
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia.,CMMR Strategic Research Centre, School of Medicine, Deakin University, Geelong, VIC, Australia.,Orygen, The National Centre of Excellence in Youth Mental Health, The Department of Psychiatry and the Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - W Marx
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - A F Carvalho
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada
| | - M Maes
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia.,Department of Psychiatry, Chulalongkorn University, Bangkok, Thailand
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Hyun DH. Insights into the New Cancer Therapy through Redox Homeostasis and Metabolic Shifts. Cancers (Basel) 2020; 12:cancers12071822. [PMID: 32645959 PMCID: PMC7408991 DOI: 10.3390/cancers12071822] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/02/2020] [Accepted: 07/06/2020] [Indexed: 12/18/2022] Open
Abstract
Modest levels of reactive oxygen species (ROS) are necessary for intracellular signaling, cell division, and enzyme activation. These ROS are later eliminated by the body’s antioxidant defense system. High amounts of ROS cause carcinogenesis by altering the signaling pathways associated with metabolism, proliferation, metastasis, and cell survival. Cancer cells exhibit enhanced ATP production and high ROS levels, which allow them to maintain elevated proliferation through metabolic reprograming. In order to prevent further ROS generation, cancer cells rely on more glycolysis to produce ATP and on the pentose phosphate pathway to provide NADPH. Pro-oxidant therapy can induce more ROS generation beyond the physiologic thresholds in cancer cells. Alternatively, antioxidant therapy can protect normal cells by activating cell survival signaling cascades, such as the nuclear factor erythroid 2-related factor 2 (Nrf2)-Kelch-like ECH-associated protein 1 (Keap1) pathway, in response to radio- and chemotherapeutic drugs. Nrf2 is a key regulator that protects cells from oxidative stress. Under normal conditions, Nrf2 is tightly bound to Keap1 and is ubiquitinated and degraded by the proteasome. However, under oxidative stress, or when treated with Nrf2 activators, Nrf2 is liberated from the Nrf2-Keap1 complex, translocated into the nucleus, and bound to the antioxidant response element in association with other factors. This cascade results in the expression of detoxifying enzymes, including NADH-quinone oxidoreductase 1 (NQO1) and heme oxygenase 1. NQO1 and cytochrome b5 reductase can neutralize ROS in the plasma membrane and induce a high NAD+/NADH ratio, which then activates SIRT1 and mitochondrial bioenergetics. NQO1 can also stabilize the tumor suppressor p53. Given their roles in cancer pathogenesis, redox homeostasis and the metabolic shift from glycolysis to oxidative phosphorylation (through activation of Nrf2 and NQO1) seem to be good targets for cancer therapy. Therefore, Nrf2 modulation and NQO1 stimulation could be important therapeutic targets for cancer prevention and treatment.
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Affiliation(s)
- Dong-Hoon Hyun
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea
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Zhai C, Djimsa BA, Prenni JE, Woerner DR, Belk KE, Nair MN. Tandem mass tag labeling to characterize muscle-specific proteome changes in beef during early postmortem period. J Proteomics 2020; 222:103794. [DOI: 10.1016/j.jprot.2020.103794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/15/2020] [Accepted: 04/20/2020] [Indexed: 02/06/2023]
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Liu S, Liu X, Wu F, Zhang X, Zhang H, Gao D, Bi D, Qu H, Ge J, Xu Y, Zhao Z. HADHA overexpression disrupts lipid metabolism and inhibits tumor growth in clear cell renal cell carcinoma. Exp Cell Res 2019; 384:111558. [DOI: 10.1016/j.yexcr.2019.111558] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 02/07/2023]
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Hyun DH. Plasma membrane redox enzymes: new therapeutic targets for neurodegenerative diseases. Arch Pharm Res 2019; 42:436-445. [PMID: 30919268 DOI: 10.1007/s12272-019-01147-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 03/16/2019] [Indexed: 01/06/2023]
Abstract
Mitochondrial dysfunction caused by oxidative stress appears at early stages of aging and age-related diseases. Plasma membrane redox enzymes act in a compensatory manner to decrease oxidative stress and supply reductive capacity to ensure cell survival. Plasma membrane redox enzymes transfer electrons from NAD(P)H to oxidized ubiquinone and α-tocopherol, resulting in inhibition of further oxidative damage. Plasma membrane redox enzymes and their partners are affected by aging, leading to progression of neurodegenerative disease pathogenesis. Up-regulating plasma membrane redox enzymes via calorie restriction and phytochemicals make cells more resistant to oxidative damage under stress conditions by maintaining redox homeostasis and improving mitochondrial function. Investigation into plasma membrane redox enzymes can provide mechanistic details underlying the relationships between plasma membrane redox enzymes and mitochondrial complexes and provide a good therapeutic target for prevention and delay of neurodegenerative disorders.
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Affiliation(s)
- Dong-Hoon Hyun
- Department of Life Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, South Korea.
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Cellular and Molecular Mechanisms of Recessive Hereditary Methaemoglobinaemia Type II. J Clin Med 2018; 7:jcm7100341. [PMID: 30309019 PMCID: PMC6210646 DOI: 10.3390/jcm7100341] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/04/2018] [Accepted: 10/08/2018] [Indexed: 12/27/2022] Open
Abstract
Cytochrome b5 reductase 3 (CYB5R3) is a membrane-bound NADH-dependent redox enzyme anchored to the mitochondrial outer membrane, endoplasmic reticulum, and plasma membrane. Recessive hereditary methaemoglobinaemia (RHM) type II is caused by CYB5R3 deficiency and is an incurable disease characterized by severe encephalopathy with mental retardation, microcephaly, generalized dystonia, and movement disorders. Currently, the etiology of type II RHM is poorly understood and there is no treatment for encephalopathy associated with this disease. Defective CYB5R3 leads to defects in the elongation and desaturation of fatty acids and cholesterol biosynthesis, which are conventionally linked with neurological disorders of type II RHM. Nevertheless, this abnormal lipid metabolism cannot explain all manifestations observed in patients. Current molecular and cellular studies indicate that CYB5R3 deficiency has pleiotropic tissue effects. Its localization in lipid rafts of neurons indicates its role in interneuronal contacts and its presence in caveolae of the vascular endothelial membrane suggests a role in the modulation of nitric oxide diffusion. Its role in aerobic metabolism and oxidative stress in fibroblasts, neurons, and cardiomyocytes has been reported to be due to its ability to modulate the intracellular ratio of NAD⁺/NADH. Based on the new molecular and cellular functions discovered for CYB5R3 linked to the plasma membrane and mitochondria, the conventional conception that the cause of type II RHM is a lipid metabolism disorder should be revised. We hypothesized that neurological symptoms of the disease could be caused by disorders in the synapse, aerobic metabolism, and/or vascular homeostasis rather than in disturbances of lipid metabolism.
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Abstract
Mucociliary clearance is critically important in protecting the airways from infection and from the harmful effects of smoke and various inspired substances known to induce oxidative stress and persistent inflammation. An essential feature of the clearance mechanism involves regulation of the periciliary liquid layer on the surface of the airway epithelium, which is necessary for normal ciliary beating and maintenance of mucus hydration. The underlying ion transport processes associated with airway surface hydration include epithelial Na+ channel-dependent Na+ absorption occurring in parallel with CFTR and Ca2+-activated Cl- channel-dependent anion secretion, which are coordinately regulated to control the depth of the periciliary liquid layer. Oxidative stress is known to cause both acute and chronic effects on airway ion transport function, and an increasing number of studies in the past few years have identified an important role for autophagy as part of the physiological response to the damaging effects of oxidation. In this review, recent studies addressing the influence of oxidative stress and autophagy on airway ion transport pathways, along with results showing the potential of autophagy modulators in restoring the function of ion channels involved in transepithelial electrolyte transport necessary for effective mucociliary clearance, are presented.
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Affiliation(s)
- Scott M O'Grady
- Departments of Animal Science, Integrative Biology and Physiology, University of Minnesota , St. Paul, Minnesota
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16
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How Supraphysiological Oxygen Levels in Standard Cell Culture Affect Oxygen-Consuming Reactions. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:8238459. [PMID: 30363917 PMCID: PMC6186316 DOI: 10.1155/2018/8238459] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 08/01/2018] [Indexed: 12/31/2022]
Abstract
Most mammalian tissue cells experience oxygen partial pressures in vivo equivalent to 1–6% O2 (i.e., physioxia). In standard cell culture, however, headspace O2 levels are usually not actively regulated and under these conditions are ~18%. This drives hyperoxia in cell culture media that can affect a wide variety of cellular activities and may compromise the ability of in vitro models to reproduce in vivo biology. Here, we review and discuss some specific O2-consuming organelles and enzymes, including mitochondria, NADPH oxidases, the transplasma membrane redox system, nitric oxide synthases, xanthine oxidase, and monoamine oxidase with respect to their sensitivities to O2 levels. Many of these produce reactive oxygen and/or nitrogen species (ROS/RNS) as either primary end products or byproducts and are acutely sensitive to O2 levels in the range from 1% to 18%. Interestingly, many of them are also transcriptional targets of hypoxia-inducible factors (HIFs) and chronic cell growth at physioxia versus 18% O2 may alter their expression. Aquaporins, which facilitate hydrogen peroxide diffusion into and out of cells, are also regulated by HIFs, indicating that O2 levels may affect intercellular communication via hydrogen peroxide. The O2 sensitivities of these important activities emphasize the importance of maintaining physioxia in culture.
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17
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Collaborating genomic, transcriptomic and microbiomic alterations lead to canine extreme intestinal polyposis. Oncotarget 2018; 9:29162-29179. [PMID: 30018743 PMCID: PMC6044369 DOI: 10.18632/oncotarget.25646] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 06/01/2018] [Indexed: 12/13/2022] Open
Abstract
Extreme intestinal polyposis in pet dogs has not yet been reported in literature. We identified a dog patient who developed numerous intestinal polyps, with the severity resembling human classic familial adenomatous polyposis (FAP), except the jejunum-ileum junction being the most polyp-dense. We investigated this dog, in comparison with 22 other dogs with spontaneous intestinal tumors but no severe polyposis, and with numerous published human cancers. We found, not APC mutation, but three other alteration pathways as likely reasons of this canine extreme polyposis. First, somatic truncation mutation W411X of FBXW7, a component of an E3 ubiquitin ligase, over-activates MYC and cell cycle-promoting network, accelerating crypt cell proliferation. Second, genes of protein trafficking and localization are downregulated, likely associated with germline mutation G406D of STAMBPL1, a K63-deubiquitinase, and MYC network activation. This inhibits epithelial apical-basolateral polarity establishment, preventing crypt cell differentiation. Third, Bacteroides uniformis, a commensal gut anaerobe, thrives and expresses abundantly thioredoxin and nitroreductase. These bacterial products could reduce oxidative stress linked to host germline mutation R51X of CYB5RL, a cytochrome b5 reductase homologue, decreasing cell death. Our work emphasizes the close collaboration of alterations across the genome, transcriptome and microbiome in promoting tumorigenesis.
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Chen X, Hall H, Simpson JP, Leon-Salas WD, Ready DF, Weake VM. Cytochrome b5 protects photoreceptors from light stress-induced lipid peroxidation and retinal degeneration. NPJ Aging Mech Dis 2017; 3:18. [PMID: 29214051 PMCID: PMC5712525 DOI: 10.1038/s41514-017-0019-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 10/27/2017] [Accepted: 10/31/2017] [Indexed: 01/06/2023] Open
Abstract
Lipid peroxides are generated by oxidative stress in cells, and contribute to ageing and neurodegenerative disease. The eye is at special risk for lipid peroxidation because photoreceptors possess amplified sensory membranes rich in peroxidation-susceptible polyunsaturated fatty acids. Light-induced lipid peroxidation in the retina contributes to retinal degeneration, and lipid peroxidation has been implicated in the progression of age-associated ocular diseases such as age-related macular degeneration (AMD). Here, we show that exposing Drosophila melanogaster to strong blue light induces oxidative stress including lipid peroxidation that results in retinal degeneration. Surprisingly, very young flies are resilient to this acute light stress, suggesting they possess endogenous neuroprotective mechanisms. While lipophilic antioxidants partially suppressed blue light-induced retinal degeneration in older flies, we find that overexpression of cytochrome b5 (Cyt-b5) completely suppressed both blue light-induced lipid peroxidation and retinal degeneration. Our data identify Cyt-b5 as a neuroprotective factor that targets light-induced oxidative damage, particularly lipid peroxidation. Cyt-b5 may function via supporting antioxidant recycling, thereby providing a strategy to prevent oxidative stress in ageing photoreceptors that would be synergistic with dietary antioxidant supplementation. Paradoxically, light is essential for vision, yet it also induces stress that damages the sensitive cells in the eye. Vikki Weake and her team at Purdue University examined how exposure to blue light causes damage to the retina in fruit flies. Blue light causes death of photoreceptors, the light-sensing neurons. Surprisingly, very young flies are resistant to blue light. Increasing levels of a single protein, Cytochrome-b5, mimicked youthful resilience in older flies. Cytochrome-b5 is central to an ancient cellular defense system that protects membranes from oxidative damage. With expansive sensory membranes containing specialized lipids, photoreceptors are especially sensitive to membrane lipid peroxidation, an emerging final common pathway for cell death in aging and disease. Research into preventing lipid peroxidation might help to develop therapies for age-related diseases such as age-related macular degeneration.
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Affiliation(s)
- Xinping Chen
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907 USA.,Present Address: University of Notre Dame, Notre Dame, IN 46556 USA
| | - Hana Hall
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907 USA
| | - Jeffrey P Simpson
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907 USA
| | - Walter D Leon-Salas
- Purdue Polytechnic Institute, Purdue University, West Lafayette, IN 47907 USA
| | - Donald F Ready
- Department of Biological Sciences, Purdue University, West Lafayette, IN 47907 USA
| | - Vikki M Weake
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907 USA.,Purdue University Center for Cancer Research, Purdue University, West Lafayette, IN 47907 USA
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Navas-Enamorado I, Bernier M, Brea-Calvo G, de Cabo R. Influence of anaerobic and aerobic exercise on age-related pathways in skeletal muscle. Ageing Res Rev 2017; 37:39-52. [PMID: 28487241 PMCID: PMC5549001 DOI: 10.1016/j.arr.2017.04.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 04/18/2017] [Accepted: 04/28/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Ignacio Navas-Enamorado
- Translational Gerontology Branch, National Institute on Aging, NIH, 251 Bayview Boulevard, Suite 100, Baltimore, MD 21224, USA
| | - Michel Bernier
- Translational Gerontology Branch, National Institute on Aging, NIH, 251 Bayview Boulevard, Suite 100, Baltimore, MD 21224, USA
| | - Gloria Brea-Calvo
- Centro Andaluz de Biología del Desarrollo and CIBERER, Instituto de Salud Carlos III, Universidad Pablo de Olavide-CSIC-JA, Sevilla 41013, Spain
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, NIH, 251 Bayview Boulevard, Suite 100, Baltimore, MD 21224, USA.
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Beyond the survival and death of the deltamethrin-threatened pollen beetle Meligethes aeneus: An in-depth proteomic study employing a transcriptome database. J Proteomics 2016; 150:281-289. [PMID: 27705816 DOI: 10.1016/j.jprot.2016.09.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 09/10/2016] [Accepted: 09/28/2016] [Indexed: 12/18/2022]
Abstract
Insecticide resistance is an increasingly global problem that hampers pest control. We sought the mechanism responsible for survival following pyrethroid treatment and the factors connected to paralysis/death of the pollen beetle Meligethes aeneus through a proteome-level analysis using nanoLC coupled with Orbitrap Fusion™ Tribrid™ mass spectrometry. A tolerant field population of beetles was treated with deltamethrin, and the ensuing proteome changes were observed in the survivors (resistant), dead (paralyzed) and control-treated beetles. The protein database consisted of the translated transcriptome, and the resulting changes were manually annotated via BLASTP. We identified a number of high-abundance changes in which there were several dominant proteins, e.g., the electron carrier cytochrome b5, ribosomal proteins 60S RPL28, 40S RPS23 and RPS26, eIF4E-transporter, anoxia up-regulated protein, 2 isoforms of vitellogenin and pathogenesis-related protein 5. Deltamethrin detoxification was influenced by different cytochromes P450, which were likely boosted by increased cytochrome b5, but glutathione-S-transferase ε and UDP-glucuronosyltransferases also contributed. Moreover, we observed changes in proteins related to RNA interference, RNA binding and epigenetic modifications. The high changes in ribosomal proteins and associated factors suggest specific control of translation. Overall, we showed modulation of expression processes by epigenetic markers, alternative splicing and translation. Future functional studies will benefit. BIOLOGICAL SIGNIFICANCE Insects develop pesticide resistance, which has become one of the key issues in plant protection. This growing resistance increases the demand for pesticide applications and the development of new substances. Knowledge in the field regarding the resistance mechanism and its responses to pesticide treatment provides us the opportunity to propose a solution for this issue. Although the pollen beetle Meligethes aeneus was effectively controlled with pyrethroids for many years, there have been reports of increasing resistance. We show protein changes including production of isoforms in response to deltamethrin at the protein level. These results illustrate the insect's survival state as a resistant beetle and in its paralyzed state (evaluated as dead) relative to resistant individuals.
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