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López-Pedrera C, Villalba JM, Patiño-Trives AM, Luque-Tévar M, Barbarroja N, Aguirre MÁ, Escudero-Contreras A, Pérez-Sánchez C. Therapeutic Potential and Immunomodulatory Role of Coenzyme Q 10 and Its Analogues in Systemic Autoimmune Diseases. Antioxidants (Basel) 2021; 10:antiox10040600. [PMID: 33924642 PMCID: PMC8069673 DOI: 10.3390/antiox10040600] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 12/14/2022] Open
Abstract
Coenzyme Q10 (CoQ10) is a mitochondrial electron carrier and a powerful lipophilic antioxidant located in membranes and plasma lipoproteins. CoQ10 is endogenously synthesized and obtained from the diet, which has raised interest in its therapeutic potential against pathologies related to mitochondrial dysfunction and enhanced oxidative stress. Novel formulations of solubilized CoQ10 and the stabilization of reduced CoQ10 (ubiquinol) have improved its bioavailability and efficacy. Synthetic analogues with increased solubility, such as idebenone, or accumulated selectively in mitochondria, such as MitoQ, have also demonstrated promising properties. CoQ10 has shown beneficial effects in autoimmune diseases. Leukocytes from antiphospholipid syndrome (APS) patients exhibit an oxidative perturbation closely related to the prothrombotic status. In vivo ubiquinol supplementation in APS modulated the overexpression of inflammatory and thrombotic risk-markers. Mitochondrial abnormalities also contribute to immune dysregulation and organ damage in systemic lupus erythematosus (SLE). Idebenone and MitoQ improved clinical and immunological features of lupus-like disease in mice. Clinical trials and experimental models have further demonstrated a therapeutic role for CoQ10 in Rheumatoid Arthritis, multiple sclerosis and type 1 diabetes. This review summarizes the effects of CoQ10 and its analogs in modulating processes involved in autoimmune disorders, highlighting the potential of these therapeutic approaches for patients with immune-mediated diseases.
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Affiliation(s)
- Chary López-Pedrera
- Rheumatology Service, Reina Sofia Hospital/Maimonides Institute for Research in Biomedicine of Córdoba (IMIBIC), University of Córdoba, 14004 Córdoba, Spain; (A.M.P.-T.); (M.L.-T.); (N.B.); (M.Á.A.); (A.E.-C.)
- Correspondence: ; Tel.: +34-957-213795
| | - José Manuel Villalba
- Department of Cell Biology, Immunology and Physiology, Agrifood Campus of International Excellence, University of Córdoba, ceiA3, 14014 Córdoba, Spain; (J.M.V.); (C.P.-S.)
| | - Alejandra Mª Patiño-Trives
- Rheumatology Service, Reina Sofia Hospital/Maimonides Institute for Research in Biomedicine of Córdoba (IMIBIC), University of Córdoba, 14004 Córdoba, Spain; (A.M.P.-T.); (M.L.-T.); (N.B.); (M.Á.A.); (A.E.-C.)
| | - Maria Luque-Tévar
- Rheumatology Service, Reina Sofia Hospital/Maimonides Institute for Research in Biomedicine of Córdoba (IMIBIC), University of Córdoba, 14004 Córdoba, Spain; (A.M.P.-T.); (M.L.-T.); (N.B.); (M.Á.A.); (A.E.-C.)
| | - Nuria Barbarroja
- Rheumatology Service, Reina Sofia Hospital/Maimonides Institute for Research in Biomedicine of Córdoba (IMIBIC), University of Córdoba, 14004 Córdoba, Spain; (A.M.P.-T.); (M.L.-T.); (N.B.); (M.Á.A.); (A.E.-C.)
| | - Mª Ángeles Aguirre
- Rheumatology Service, Reina Sofia Hospital/Maimonides Institute for Research in Biomedicine of Córdoba (IMIBIC), University of Córdoba, 14004 Córdoba, Spain; (A.M.P.-T.); (M.L.-T.); (N.B.); (M.Á.A.); (A.E.-C.)
| | - Alejandro Escudero-Contreras
- Rheumatology Service, Reina Sofia Hospital/Maimonides Institute for Research in Biomedicine of Córdoba (IMIBIC), University of Córdoba, 14004 Córdoba, Spain; (A.M.P.-T.); (M.L.-T.); (N.B.); (M.Á.A.); (A.E.-C.)
| | - Carlos Pérez-Sánchez
- Department of Cell Biology, Immunology and Physiology, Agrifood Campus of International Excellence, University of Córdoba, ceiA3, 14014 Córdoba, Spain; (J.M.V.); (C.P.-S.)
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Villalba JM, Navas P. Regulation of coenzyme Q biosynthesis pathway in eukaryotes. Free Radic Biol Med 2021; 165:312-323. [PMID: 33549646 DOI: 10.1016/j.freeradbiomed.2021.01.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/22/2021] [Accepted: 01/30/2021] [Indexed: 12/21/2022]
Abstract
Coenzyme Q (CoQ, ubiquinone/ubiquinol) is a ubiquitous and unique molecule that drives electrons in mitochondrial respiratory chain and an obligatory step for multiple metabolic pathways in aerobic metabolism. Alteration of CoQ biosynthesis or its redox stage are causing mitochondrial dysfunctions as hallmark of heterogeneous disorders as mitochondrial/metabolic, cardiovascular, and age-associated diseases. Regulation of CoQ biosynthesis pathway is demonstrated to affect all steps of proteins production of this pathway, posttranslational modifications and protein-protein-lipid interactions inside mitochondria. There is a bi-directional relationship between CoQ and the epigenome in which not only the CoQ status determines the epigenetic regulation of many genes, but CoQ biosynthesis is also a target for epigenetic regulation, which adds another layer of complexity to the many pathways by which CoQ levels are regulated by environmental and developmental signals to fulfill its functions in eukaryotic aerobic metabolism.
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Affiliation(s)
- José Manuel Villalba
- Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario, ceiA3, Spain
| | - Plácido Navas
- Centro Andaluz de Biología del Desarrollo and CIBERER, Instituto de Salud Carlos III, Universidad Pablo de Olavide-CSIC-JA, Sevilla, 41013, Spain.
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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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Fischer A, Onur S, Niklowitz P, Menke T, Laudes M, Rimbach G, Döring F. Coenzyme Q10 Status as a Determinant of Muscular Strength in Two Independent Cohorts. PLoS One 2016; 11:e0167124. [PMID: 27907044 PMCID: PMC5132250 DOI: 10.1371/journal.pone.0167124] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 11/09/2016] [Indexed: 12/19/2022] Open
Abstract
Aging is associated with sarcopenia, which is a loss of skeletal muscle mass and function. Coenzyme Q10 (CoQ10) is involved in several important functions that are related to bioenergetics and protection against oxidative damage; however, the role of CoQ10 as a determinant of muscular strength is not well documented. The aim of the present study was to evaluate the determinants of muscular strength by examining hand grip force in relation to CoQ10 status, gender, age and body mass index (BMI) in two independent cohorts (n = 334, n = 967). Furthermore, peak flow as a function of respiratory muscle force was assessed. Spearman's correlation revealed a significant positive association between CoQ10/cholesterol level and hand grip in the basic study population (p<0.01) as well as in the validation population (p<0.001). In the latter, we also found a negative correlation with the CoQ10 redox state (p<0.01), which represents a lower percentage of the reduced form of CoQ10 (ubiquinol) in subjects who exhibit a lower muscular strength. Furthermore, the age of the subjects showed a negative correlation with hand grip (p<0.001), whereas BMI was positively correlated with hand grip (p<0.01), although only in the normal weight subgroup (BMI <25 kg/m2). Analysis of the covariance (ANCOVA) with hand grip as the dependent variable revealed CoQ10/cholesterol as a determinant of muscular strength and gender as the strongest effector of hand grip. In conclusion, our data suggest that both a low CoQ10/cholesterol level and a low percentage of the reduced form of CoQ10 could be an indicator of an increased risk of sarcopenia in humans due to their negative associations to upper body muscle strength, peak flow and muscle mass.
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Affiliation(s)
- Alexandra Fischer
- Department of Molecular Prevention, Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Simone Onur
- Department of Molecular Prevention, Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Petra Niklowitz
- Children’s Hospital of Datteln, Witten/Herdecke University, Datteln, Germany
| | - Thomas Menke
- Children’s Hospital of Datteln, Witten/Herdecke University, Datteln, Germany
| | - Matthias Laudes
- Department of Internal Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Gerald Rimbach
- Department of Food Science, Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Frank Döring
- Department of Molecular Prevention, Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Kiel, Germany
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Siendones E, SantaCruz-Calvo S, Martín-Montalvo A, Cascajo MV, Ariza J, López-Lluch G, Villalba JM, Acquaviva-Bourdain C, Roze E, Bernier M, de Cabo R, Navas P. Membrane-bound CYB5R3 is a common effector of nutritional and oxidative stress response through FOXO3a and Nrf2. Antioxid Redox Signal 2014; 21:1708-25. [PMID: 24450884 PMCID: PMC4186635 DOI: 10.1089/ars.2013.5479] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
AIMS Membrane-bound CYB5R3 deficiency in humans causes recessive hereditary methaemoglobinaemia (RHM), an incurable disease that is characterized by severe neurological disorders. CYB5R3 encodes for NADH-dependent redox enzyme that contributes to metabolic homeostasis and stress protection; however, how it is involved in the neurological pathology of RHM remains unknown. Here, the role and transcriptional regulation of CYB5R3 was studied under nutritional and oxidative stress. RESULTS CYB5R3-deficient cells exhibited a decrease of the NAD(+)/NADH ratio, mitochondrial respiration rate, ATP production, and mitochondrial electron transport chain activities, which were associated with higher sensitivity to oxidative stress, and an increase in senescence-associated β-galactosidase activity. Overexpression of either forkhead box class O 3a (FOXO3a) or nuclear factor (erythroid-derived 2)-like2 (Nrf2) was associated with increased CYB5R3 levels, and genetic ablation of Nrf2 resulted in lower CYB5R3 expression. The presence of two antioxidant response element sequences in the CYB5R3 promoter led to chromatin immunoprecipitation studies, which showed that cellular stressors enhanced the binding of Nrf2 and FOXO3a to the CYB5R3 promoter. INNOVATION Our findings demonstrate that CYB5R3 contributes to regulate redox homeostasis, aerobic metabolism, and cellular senescence, suggesting that CYB5R3 might be a key effector of oxidative and nutritional stress pathways. The expression of CYB5R3 is regulated by the cooperation of Nrf2 and FOXO3a. CONCLUSION CYB5R3 is an essential gene that appears as a final effector for both nutritional and oxidative stress responses through FOXO3a and Nrf2, respectively, and their interaction promotes CYB5R3 expression. These results unveil a potential mechanism of action by which CYB5R3 deficiency contributes to the pathophysiological underpinnings of neurological disorders in RHM patients.
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Affiliation(s)
- Emilio Siendones
- 1 Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC-JA , Sevilla, Spain
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López-Domínguez JA, Khraiwesh H, González-Reyes JA, López-Lluch G, Navas P, Ramsey JJ, de Cabo R, Burón MI, Villalba JM. Dietary fat modifies mitochondrial and plasma membrane apoptotic signaling in skeletal muscle of calorie-restricted mice. AGE (DORDRECHT, NETHERLANDS) 2013; 35:2027-2044. [PMID: 23179253 PMCID: PMC3824980 DOI: 10.1007/s11357-012-9492-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 11/05/2012] [Indexed: 02/15/2024]
Abstract
Calorie restriction decreases skeletal muscle apoptosis, and this phenomenon has been mechanistically linked to its protective action against sarcopenia of aging. Alterations in lipid composition of membranes have been related with the beneficial effects of calorie restriction. However, no study has been designed to date to elucidate if different dietary fat sources with calorie restriction modify apoptotic signaling in skeletal muscle. We show that a 6-month calorie restriction decreased the activity of the plasma membrane neutral sphingomyelinase, although caspase-8/10 activity was not altered, in young adult mice. Lipid hydroperoxides, Bax levels, and cytochrome c and AIF release/accumulation into the cytosol were also decreased, although caspase-9 activity was unchanged. No alterations in caspase-3 and apoptotic index (DNA fragmentation) were observed, but calorie restriction improved structural features of gastrocnemius fibers by increasing cross-sectional area and decreasing circularity of fibers in cross sections. Changing dietary fat with calorie restriction produced substantial alterations of apoptotic signaling. Fish oil augmented the protective effect of calorie restriction decreasing plasma membrane neutral sphingomyelinase, Bax levels, caspase-8/10, and -9 activities, while increasing levels of the antioxidant coenzyme Q at the plasma membrane, and potentiating the increase of cross-sectional area and the decrease of fiber circularity in cross sections. Many of these changes were not found when we used lard. Our data support that dietary fish oil with calorie restriction produces a cellular anti-apoptotic environment in skeletal muscle with a downregulation of components involved in the initial stages of apoptosis engagement, both at the plasma membrane and the mitochondria.
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Affiliation(s)
- José Alberto López-Domínguez
- />Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario ceiA3, Campus Rabanales Edificio Severo Ochoa, 3ª planta, Córdoba, 14014 Spain
| | - Husam Khraiwesh
- />Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario ceiA3, Campus Rabanales Edificio Severo Ochoa, 3ª planta, Córdoba, 14014 Spain
| | - José Antonio González-Reyes
- />Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario ceiA3, Campus Rabanales Edificio Severo Ochoa, 3ª planta, Córdoba, 14014 Spain
| | - Guillermo López-Lluch
- />Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-CSIC, and CIBERER (Instituto de Salud Carlos III), Sevilla, Spain
| | - Plácido Navas
- />Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-CSIC, and CIBERER (Instituto de Salud Carlos III), Sevilla, Spain
| | - Jon Jay Ramsey
- />VM Molecular Biosciences, University of California, Davis, CA 95616 USA
| | - Rafael de Cabo
- />Laboratory of Experimental Gerontology, National Institute of Aging, Baltimore, NIH USA
| | - María Isabel Burón
- />Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario ceiA3, Campus Rabanales Edificio Severo Ochoa, 3ª planta, Córdoba, 14014 Spain
| | - José M. Villalba
- />Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Internacional Agroalimentario ceiA3, Campus Rabanales Edificio Severo Ochoa, 3ª planta, Córdoba, 14014 Spain
- />Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, Campus de Excelencia Agroalimentario ceiA3, Edificio Severo Ochoa, 3ª planta, Campus Rabanales, Córdoba, 14014 Spain
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Nikolova-Karakashian MN, Reid MB. Sphingolipid metabolism, oxidant signaling, and contractile function of skeletal muscle. Antioxid Redox Signal 2011; 15:2501-17. [PMID: 21453197 PMCID: PMC3176343 DOI: 10.1089/ars.2011.3940] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
SIGNIFICANCE Sphingolipids are a class of bioactive lipids that regulate diverse cell functions. Ceramide, sphingosine, and sphingosine-1-phosphate accumulate in tissues such as liver, brain, and lung under conditions of cellular stress, including oxidative stress. The activity of some sphingolipid metabolizing enzymes, chiefly the sphingomyelinases, is stimulated during inflammation and in response to oxidative stress. Ceramide, the sphingomyelinase product, as well as the ceramide metabolite, sphingosine-1-phosphate, can induce the generation of more reactive oxygen species, propagating further inflammation. RECENT ADVANCES This review article summarizes information on sphingolipid biochemistry and signaling pertinent to skeletal muscle and describes the potential influence of sphingolipids on contractile function. CRITICAL ISSUES It encompasses topics related to (1) the pathways for complex sphingolipid biosynthesis and degradation, emphasizing sphingolipid regulation in various muscle fiber types and subcellular compartments; (2) the emerging evidence that implicates ceramide, sphingosine, and sphingosine-1-phosphate as regulators of muscle oxidant activity, and (3) sphingolipid effects on contractile function and fatigue. FUTURE DIRECTIONS We propose that prolonged inflammatory conditions alter ceramide, sphingosine, and sphingosine-1-phosphate levels in skeletal muscle and that these changes promote the weakness, premature fatigue, and cachexia that plague individuals with heart failure, cancer, diabetes, and other chronic inflammatory diseases.
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Kones R. Mitochondrial therapy for Parkinson's disease: neuroprotective pharmaconutrition may be disease-modifying. Clin Pharmacol 2010; 2:185-98. [PMID: 22291504 PMCID: PMC3262379 DOI: 10.2147/cpaa.s12082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Progressive destruction of neurons that produce dopamine in the basal ganglia of the brain, particularly the substantia nigra, is a hallmark of Parkinson's disease. The syndrome of the Parkinsonian phenotype is caused by many etiologies, involving multiple contributing mechanisms. Characteristic findings are pathologic inclusions called Lewy bodies, which are protein aggregates inside nerve cells. Environmental insults are linked with the disease, and a number of associated genes have also been identified. Neuroinflammation, microglia activation, oxidative stress, and mitochondrial dysfunction are central processes producing nerve damage. In addition, protein misfolding, driven by accumulation and condensation of α-synuclein, compounded by inadequate elimination of defective protein through the ubiquitin- proteasome system, promote apoptosis. Current pharmacologic therapy is palliative rather than disease- modifying, and typically becomes unsatisfactory over time. Coenzyme Q10 and creatine, two agents involved in energy production, may be disease-modifying, and able to produce sufficient beneficial pathophysiologic changes in preclinical studies to warrant large studies now in progress. Use of long-chain omega-3 fatty acids and vitamin D in PD are also topics of current interest.
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Affiliation(s)
- Richard Kones
- Cardiometabolic Research Institute, Houston, TX, USA.
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Casarin A, Jimenez-Ortega JC, Trevisson E, Pertegato V, Doimo M, Ferrero-Gomez ML, Abbadi S, Artuch R, Quinzii C, Hirano M, Basso G, Ocaña CS, Navas P, Salviati L. Functional characterization of human COQ4, a gene required for Coenzyme Q10 biosynthesis. Biochem Biophys Res Commun 2008; 372:35-9. [PMID: 18474229 DOI: 10.1016/j.bbrc.2008.04.172] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Accepted: 04/28/2008] [Indexed: 10/22/2022]
Abstract
Defects in genes involved in coenzyme Q (CoQ) biosynthesis cause primary CoQ deficiency, a severe multisystem disorders presenting as progressive encephalomyopathy and nephropathy. The COQ4 gene encodes an essential factor for biosynthesis in Saccharomyces cerevisiae. We have identified and cloned its human ortholog, COQ4, which is located on chromosome 9q34.13, and is transcribed into a 795 base-pair open reading frame, encoding a 265 amino acid (aa) protein (Isoform 1) with a predicted N-terminal mitochondrial targeting sequence. It shares 39% identity and 55% similarity with the yeast protein. Coq4 protein has no known enzymatic function, but may be a core component of multisubunit complex required for CoQ biosynthesis. The human transcript is detected in Northern blots as a approximately 1.4 kb single band and is expressed ubiquitously, but at high levels in liver, lung, and pancreas. Transcription initiates at multiple sites, located 333-23 nucleotides upstream of the ATG. A second group of transcripts originating inside intron 1 of the gene encodes a 241 aa protein, which lacks the mitochondrial targeting sequence (isoform 2). Expression of GFP-fusion proteins in HeLa cells confirmed that only isoform 1 is targeted to mitochondria. The functional significance of the second isoform is unknown. Human COQ4 isoform 1, expressed from a multicopy plasmid, efficiently restores both growth in glycerol, and CoQ content in COQ4(null) yeast strains. Human COQ4 is an interesting candidate gene for patients with isolated CoQ(10) deficiency.
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Affiliation(s)
- Alberto Casarin
- Clinical Genetics Unit, Department of Pediatrics, University of Padova, Via Giustiniani 3, 35128 Padova, Italy
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Navas P, Villalba JM, de Cabo R. The importance of plasma membrane coenzyme Q in aging and stress responses. Mitochondrion 2007; 7 Suppl:S34-40. [PMID: 17482527 DOI: 10.1016/j.mito.2007.02.010] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2006] [Revised: 01/26/2007] [Accepted: 02/03/2007] [Indexed: 02/02/2023]
Abstract
The plasma membrane of eukaryotic cells is the limit to interact with the environment. This position implies receiving stress signals that affects its components such as phospholipids. Inserted inside these components is coenzyme Q that is a redox compound acting as antioxidant. Coenzyme Q is reduced by diverse dehydrogenase enzymes mainly NADH-cytochrome b(5) reductase and NAD(P)H:quinone reductase 1. Reduced coenzyme Q can prevent lipid peroxidation chain reaction by itself or by reducing other antioxidants such as alpha-tocopherol and ascorbate. The group formed by antioxidants and the enzymes able to reduce coenzyme Q constitutes a plasma membrane redox system that is regulated by conditions that induce oxidative stress. Growth factor removal, ethidium bromide-induced rho degrees cells, and vitamin E deficiency are some of the conditions where both coenzyme Q and its reductases are increased in the plasma membrane. This antioxidant system in the plasma membrane has been observed to participate in the healthy aging induced by calorie restriction. Furthermore, coenzyme Q regulates the release of ceramide from sphingomyelin, which is concentrated in the plasma membrane. This results from the non-competitive inhibition of the neutral sphingomyelinase by coenzyme Q particularly by its reduced form. Coenzyme Q in the plasma membrane is then the center of a complex antioxidant system preventing the accumulation of oxidative damage and regulating the externally initiated ceramide signaling pathway.
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Affiliation(s)
- Plácido Navas
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, 41013 Sevilla, Spain.
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López-Martín JM, Salviati L, Trevisson E, Montini G, DiMauro S, Quinzii C, Hirano M, Rodriguez-Hernandez A, Cordero MD, Sánchez-Alcázar JA, Santos-Ocaña C, Navas P. Missense mutation of the COQ2 gene causes defects of bioenergetics and de novo pyrimidine synthesis. Hum Mol Genet 2007; 16:1091-7. [PMID: 17374725 PMCID: PMC4345105 DOI: 10.1093/hmg/ddm058] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Coenzyme Q(10) (CoQ(10)) deficiency has been associated with an increasing number of clinical phenotypes that respond to CoQ(10) supplementation. In two siblings with encephalomyopathy, nephropathy and severe CoQ(10) deficiency, a homozygous mutation was identified in the CoQ(10) biosynthesis gene COQ2, encoding polyprenyl-pHB transferase. To confirm the pathogenicity of this mutation, we have demonstrated that human wild-type, but not mutant COQ2, functionally complements COQ2 defective yeast. In addition, an equivalent mutation introduced in the yeast COQ2 gene also decreases both CoQ(6) concentration and growth in respiratory-chain dependent medium. Polyprenyl-pHB transferase activity was 33-45% of controls in COQ2 mutant fibroblasts. CoQ-dependent mitochondrial complexes activities were restored in deficient fibroblasts by CoQ(10) supplementation, and growth rate was restored in these cells by either CoQ(10) or uridine supplementation. This work is the first direct demonstration of the pathogenicity of a COQ2 mutation involved in human disease, and establishes yeast as a useful model to study human CoQ(10) deficiency. Moreover, we demonstrate that CoQ(10) deficiency in addition to the bioenergetics defect also impairs de novo pyrimidine synthesis, which may contribute to the pathogenesis of the disease.
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Affiliation(s)
- José M. López-Martín
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, 41013 Sevilla, Spain
| | - Leonardo Salviati
- Clinical Genetics, Department of Pediatrics, University of Padova, 35128 Padova, Italy
- To whom correspondence should be addressed at: Clinical Genetics, Department of Pediatrics, University of Padova, Via Giustiniani 3, 35128 Padova, Italy. Tel: +39 0498213513; Fax: +39 0498211425;
| | - Eva Trevisson
- Clinical Genetics, Department of Pediatrics, University of Padova, 35128 Padova, Italy
| | - Giovanni Montini
- Department of Pediatrics, University of Padova, 35128 Padova, Italy
| | - Salvatore DiMauro
- Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA
| | - Catarina Quinzii
- Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA
| | - Michio Hirano
- Department of Neurology, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA
| | | | - Mario D. Cordero
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, 41013 Sevilla, Spain
| | - José A. Sánchez-Alcázar
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, 41013 Sevilla, Spain
| | - Carlos Santos-Ocaña
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, 41013 Sevilla, Spain
| | - Plácido Navas
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, 41013 Sevilla, Spain
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Hyun DH, Hunt ND, Emerson SS, Hernandez JO, Mattson MP, de Cabo R. Up-regulation of plasma membrane-associated redox activities in neuronal cells lacking functional mitochondria. J Neurochem 2007; 100:1364-74. [PMID: 17250676 DOI: 10.1111/j.1471-4159.2006.04411.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mitochondria-deficient cells (rho(o) cells) survive through enhanced glycolytic metabolism in the presence of pyruvate and uridine. The plasma membrane redox system (PMRS) contains several NAD(P)H-related enzymes and plays a key role in maintaining the levels of NAD(+)/NADH and reduced coenzyme Q. In this study, rho(o) cells were used to investigate how the PMRS is regulated under conditions of mitochondrial dysfunction. rho(o) cells exhibited a lower oxygen consumption rate and higher levels of lactate than parental cells, and were more sensitive to glycolysis inhibitors (2-deoxyglucose and iodoacetamide) than control cells. However, they were more resistant to H(2)O(2), consistent with increased catalase activity and decreased oxidative damage (protein carbonyls and nitrotyrosine). PM-associated redox enzyme activities were enhanced in rho(o) cells compared to those in control cells. Our data suggest that all PMRS enzymes and biomarkers tested are closely related to the ability of the PMs to maintain redox homeostasis. These results illustrate that an up-regulated PM redox activity can protect cells from oxidative stress as a result of an improved antioxidant capacity, and suggest a mechanism by which neurons adapt to conditions of impaired mitochondrial function.
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Affiliation(s)
- Dong-Hoon Hyun
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA
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Bello RI, Gómez-Díaz C, Burón MI, Navas P, Villalba JM. Differential regulation of hepatic apoptotic pathways by dietary olive and sunflower oils in the aging rat. Exp Gerontol 2006; 41:1174-84. [PMID: 17049786 DOI: 10.1016/j.exger.2006.08.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2006] [Revised: 08/30/2006] [Accepted: 08/31/2006] [Indexed: 11/16/2022]
Abstract
In this work we have studied how dietary fat affects aging-related changes in a number of factors that regulate rat hepatic apoptosis. Animals were fed lifelong with two experimental diets containing either virgin olive oil or sunflower oil as dietary fat. Caspases of the intrinsic and extrinsic pathways of apoptosis, Bcl-2 and Bax polypeptide levels, and plasma membrane neutral sphingomyelinase activity were determined at 6, 12, and 24 months of age. Caspase-8/10 activity (a marker of the extrinsic pathway) was not affected by either aging or dietary fat, but activities of both caspase-9 (a marker of the intrinsic pathway) and caspase-3 (an executioner caspase) were significantly depressed in liver from animals fed on a sunflower oil-based diet. These decreases were not observed in animals fed with a diet based on virgin olive oil, which also resulted in significantly lower Bcl-2/Bax ratios. On the other hand, in comparison with sunflower, dietary olive oil decreased oxidative stress in liver from aged rats, resulting in lower levels of membrane hydroperoxides and higher coenzyme Q levels in plasma membrane. Plasma membrane Mg(2+)-dependent neutral sphingomyelinase was strongly activated in aged rats fed on the sunflower oil diet, but no aging-related increase was observed in animals fed on the olive oil diet. Our results support that dietary oil can alter significantly the susceptibility of hepatocytes to different apoptotic stimuli by altering both pro- and anti-apoptotic mediators, which reinforces the importance of the diet in aging studies. Because virgin olive oil may increase susceptibility of hepatocytes to apoptosis induced through the intrinsic pathway under conditions of decreased oxidative stress, our results may have important implications to understand the potential beneficial effects of that edible oil against liver carcinogenesis during aging.
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Affiliation(s)
- Rosario I Bello
- Departamento de Biología Celular, Fisiología e Inmunología, Facultad de Ciencias, Universidad de Córdoba, Córdoba 14014, Spain
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de Cabo R, Burgess JR, Navas P. Adaptations to oxidative stress induced by vitamin E deficiency in rat liver. J Bioenerg Biomembr 2006; 38:309-17. [PMID: 17033938 DOI: 10.1007/s10863-006-9050-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Vitamin E deficiency in rats led to a sequence of antioxidant defense adaptations in the liver. After three weeks, alpha-tocopherol concentration was 5% of control, but ascorbate and ubiquinol concentrations were 2- to 3-fold greater than control. During the early phase of adaptation no differences in markers of lipid peroxidation were observed, but the activities of both cytochrome b5 reductase and glucose-6-phosphate dehydrogenase were significantly greater in deficient livers. By nine weeks, accumulation of lipid peroxidation end products began to occur along with declining concentrations of ascorbate, and higher NQO1 activities. At twelve weeks, rat growth ceased, and both lipid peroxidation products and cytosolic calcium-independent phospholipase A2 reached maximum concentrations. Thus, in growing rats the changes progressed from increases in both ubiquinol and quinone reductases through accumulation of lipid peroxidation products and loss of endogenous antioxidants to finally induction of lipid metabolizing enzymes and cessation of rat growth.
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Affiliation(s)
- Rafael de Cabo
- Department of Foods and Nutrition, Purdue University, West Lafayette, IN 47907, USA
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Abstract
Oxidative stress over time leads to the accumulation of damaged macromolecules and to profound physiological changes that are associated with several age-related diseases. The plasma membrane redox system (PMRS) appears to attenuate oxidative stress acting as a compensatory mechanism during the aging process. The PMRS appears to play a protective role during mitochondrial dysfunction to provide cells with a survival mechanism by lowering oxidative stress. The PMRS accomplishes this by producing more NAD(+) for glycolytic ATP production via transfer of electrons from intracellular reducing equivalents to extracelluar acceptors. Ubiquinone and alpha-tocopherol are key antioxidant molecules in the plasma membrane that are affected by aging and can be up-regulated by dietary interventions such as calorie restriction (CR). Up-regulation of PMRS activity leads to cell survival and membrane homeostasis under stress conditions and during calorie restriction. Further studies of the PMRS may provide not only additional information on the mechanisms involved in aging and CR, but may provide therapeutic targets for the prevention and treatment of age-related diseases.
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Affiliation(s)
- Dong-Hoon Hyun
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
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Bello RI, Gómez-Díaz C, Burón MI, Alcaín FJ, Navas P, Villalba JM. Enhanced anti-oxidant protection of liver membranes in long-lived rats fed on a coenzyme Q10-supplemented diet. Exp Gerontol 2006; 40:694-706. [PMID: 16125350 DOI: 10.1016/j.exger.2005.07.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2005] [Revised: 07/14/2005] [Accepted: 07/18/2005] [Indexed: 11/20/2022]
Abstract
Coenzyme Q10 supplementation increases life-span of rats fed on a diet enriched with polyunsaturated fatty acids (Quiles, J.L., Ochoa, J.J., Huertas, J.R., Mataix, J., 2004b. Coenzyme Q supplementation protects from age-related DNA double-strand breaks and increased lifespan in rats fed on a PUFA-rich diet. Exp. Gerontol. 39, 189-194). Our study was set as a first attempt to establish a mechanistic link between life span extension and CoQ10 supplementation. When rats were fed on a PUFAn-6 plus CoQ10 diet, levels of CoQ10 were increased in plasma membrane at every time point compared to control rats fed on a PUFAn-6-alone diet. Ratios of CoQ9 to CoQ10 were significantly lower at every time point in both liver plasma membranes and homogenates of CoQ10-supplemented animals. CoQ10 supplementation did not affect cytosolic NAD(P)H:quinone oxidoreductase 1 (NQO1), which increased significantly with aging, but plasma membrane-bound NQO1 decreased significantly in the CoQ10-supplemented group at 12 months, when maximal incorporation of exogenous CoQ10 was observed. Neither aging nor the diet affected NADH-cytochrome b5 reductase levels. Glutathione-dependent anti-oxidant activities such as cytosolic glutathione-S-transferase (GST) and microsomal Se-independent glutathione peroxidase decreased with aging and supplementation with CoQ10 attenuated this decay. 2,2' Azobis amidinopropane (AAPH)-induced oxidation of membranes was significantly higher in aged rats, and supplementation with CoQ10 also inhibited this increase. Consistent with higher CoQ10 levels and enhanced anti-oxidant protection, plasma membrane Mg2+-dependent neutral sphingomyelinase was inhibited by dietary CoQ10 in aged rats. Our results support the involvement of thiol-dependent mechanisms in the potentiation of the anti-oxidant capacity of membranes in CoQ10-supplemented rats, further supporting the potentially beneficial anti-oxidative role of dietary CoQ10 during aging. The possibility that a decreased CoQ9/CoQ10 ratio in animals fed on the PUFAn-6-rich plus CoQ10 diet could also influence longevity is also discussed.
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Affiliation(s)
- Rosario I Bello
- Departamento de Biología Celular, Fisiología e Inmunología, Facultad de Ciencias, Universidad de Córdoba, Campus Rabanales, Edificio Severo Ochoa, 3a planta; 14014 Córdoba, Spain
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