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Moya GE, Rivera PD, Dittenhafer-Reed KE. Evidence for the Role of Mitochondrial DNA Release in the Inflammatory Response in Neurological Disorders. Int J Mol Sci 2021; 22:7030. [PMID: 34209978 PMCID: PMC8268735 DOI: 10.3390/ijms22137030] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 12/21/2022] Open
Abstract
Mitochondria are regarded as the metabolic centers of cells and are integral in many other cell processes, including the immune response. Each mitochondrion contains numerous copies of mitochondrial DNA (mtDNA), a small, circular, and bacterial-like DNA. In response to cellular damage or stress, mtDNA can be released from the mitochondrion and trigger immune and inflammatory responses. mtDNA release into the cytosol or bloodstream can occur as a response to hypoxia, sepsis, traumatic injury, excitatory cytotoxicity, or drastic mitochondrial membrane potential changes, some of which are hallmarks of neurodegenerative and mood disorders. Released mtDNA can mediate inflammatory responses observed in many neurological and mood disorders by driving the expression of inflammatory cytokines and the interferon response system. The current understanding of the role of mtDNA release in affective mood disorders and neurodegenerative diseases will be discussed.
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Affiliation(s)
| | - Phillip D. Rivera
- Department of Chemistry and Biology, Hope College, Holland, MI 49423, USA;
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Smolyarova DD, Podgorny OV, Bilan DS, Belousov VV. A guide to genetically encoded tools for the study of H 2 O 2. FEBS J 2021; 289:5382-5395. [PMID: 34173331 DOI: 10.1111/febs.16088] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 04/23/2021] [Accepted: 06/24/2021] [Indexed: 01/09/2023]
Abstract
Cell metabolism heavily relies on the redox reactions that inevitably generate reactive oxygen species (ROS). It is now well established that ROS fluctuations near basal levels coordinate numerous physiological processes in living organisms, thus exhibiting regulatory functions. Hydrogen peroxide, the most long-lived ROS, is a key contributor to ROS-dependent signal transduction in the cell. H2 O2 is known to impact various targets in the cell; therefore, the question of how H2 O2 modulates physiological processes in a highly specific manner is central in redox biology. To resolve this question, novel genetic tools have recently been created for detecting H2 O2 and emulating its generation in living organisms with unmatched spatiotemporal resolution. Here, we review H2 O2 -sensitive genetically encoded fluorescent sensors and opto- and chemogenetic tools for controlled H2 O2 generation.
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Affiliation(s)
- Daria D Smolyarova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia.,Faculty of Biology, Lomonosov Moscow State University, Russia
| | - Oleg V Podgorny
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia.,Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow, Russia.,Laboratory of Experimental Oncology, Pirogov Russian National Research Medical University, Moscow, Russia
| | - Dmitry S Bilan
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia.,Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow, Russia.,Laboratory of Experimental Oncology, Pirogov Russian National Research Medical University, Moscow, Russia
| | - Vsevolod V Belousov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia.,Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow, Russia.,Laboratory of Experimental Oncology, Pirogov Russian National Research Medical University, Moscow, Russia.,Federal Center of Brain Research and Neurotechnologies of the Federal Medical Biological Agency, Moscow, Russia.,Institute for Cardiovascular Physiology, Georg August University Göttingen, Germany
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Cheng H, Yang B, Ke T, Li S, Yang X, Aschner M, Chen P. Mechanisms of Metal-Induced Mitochondrial Dysfunction in Neurological Disorders. TOXICS 2021; 9:142. [PMID: 34204190 PMCID: PMC8235163 DOI: 10.3390/toxics9060142] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 01/31/2023]
Abstract
Metals are actively involved in multiple catalytic physiological activities. However, metal overload may result in neurotoxicity as it increases formation of reactive oxygen species (ROS) and elevates oxidative stress in the nervous system. Mitochondria are a key target of metal-induced toxicity, given their role in energy production. As the brain consumes a large amount of energy, mitochondrial dysfunction and the subsequent decrease in levels of ATP may significantly disrupt brain function, resulting in neuronal cell death and ensuing neurological disorders. Here, we address contemporary studies on metal-induced mitochondrial dysfunction and its impact on the nervous system.
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Affiliation(s)
- Hong Cheng
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China; (H.C.); (X.Y.)
| | - Bobo Yang
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.Y.); (T.K.)
| | - Tao Ke
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.Y.); (T.K.)
| | - Shaojun Li
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning 530021, China;
| | - Xiaobo Yang
- Department of Occupational Health and Environmental Health, School of Public Health, Guangxi Medical University, Nanning 530021, China; (H.C.); (X.Y.)
- Department of Public Health, School of Medicine, Guangxi University of Science and Technology, Liuzhou 545006, China
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.Y.); (T.K.)
| | - Pan Chen
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (B.Y.); (T.K.)
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Frungieri MB, Calandra RS, Bartke A, Matzkin ME. Male and female gonadal ageing: its impact on health span and life span. Mech Ageing Dev 2021; 197:111519. [PMID: 34139215 DOI: 10.1016/j.mad.2021.111519] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/03/2021] [Accepted: 06/08/2021] [Indexed: 02/07/2023]
Abstract
Ageing is linked to changes in the hypothalamic-pituitary-gonadal axis and a progressive decline in gonadal function. While women become infertile when they enter menopause, fertility decline in ageing men does not necessarily involve a complete cessation of spermatogenesis. Gonadal dysfunction in elderly people is characterized by morphological, endocrine and metabolic alterations affecting the reproductive function and quality of life. With advancing age, sexuality turns into a critical emotional and physical factor actually defining the number of years that ageing people live a healthy life. Gonadal ageing correlates with comorbidities and an increased risk of age-related diseases including diabetes, kidney problems, cardiovascular failures and cancer. This article briefly summarizes the current state of knowledge on ovarian and testicular senescence, explores the experimental models used in the study of gonadal ageing, and describes the local pro-inflammatory, oxidative and apoptotic events and the associated signalling pathways that take place in the gonads while people get older. Overall, literature reports that ageing exacerbates a mutual crosstalk among oxidative stress, apoptosis and the inflammatory response in the gonads leading to detrimental effects on fertility. Data also highlight the clinical implications of novel therapeutic interventions using antioxidant, anti-apoptotic and anti-inflammatory drugs on health span and life span.
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Affiliation(s)
- Mónica B Frungieri
- Instituto de Biología y Medicina Experimental, CONICET, Ciudad de Buenos Aires, C1428ADN, Argentina; Cátedra de Química, Ciclo Básico Común, Ciudad de Buenos Aires, C1405CAE, Argentina.
| | - Ricardo S Calandra
- Instituto de Biología y Medicina Experimental, CONICET, Ciudad de Buenos Aires, C1428ADN, Argentina
| | - Andrzej Bartke
- Division of Geriatrics Research, Department of Internal Medicine, Southern Illinois University, School of Medicine, Springfield, IL 62702, USA
| | - María E Matzkin
- Instituto de Biología y Medicina Experimental, CONICET, Ciudad de Buenos Aires, C1428ADN, Argentina; Cátedra de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, C1121ABG, Argentina
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55
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Yusuf M. Formulation and cognitive evaluation of self-assembled phosphatidylserine-chitosan nanoparticles of lycopene, an innovative technique to lessen STZ-induced oxidative stress: A vital persuader of major neurological diseases. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102534] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Oyefeso FA, Muotri AR, Wilson CG, Pecaut MJ. Brain organoids: A promising model to assess oxidative stress-induced central nervous system damage. Dev Neurobiol 2021; 81:653-670. [PMID: 33942547 DOI: 10.1002/dneu.22828] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 12/13/2022]
Abstract
Oxidative stress (OS) is one of the most significant propagators of systemic damage with implications for widespread pathologies such as vascular disease, accelerated aging, degenerative disease, inflammation, and traumatic injury. OS can be induced by numerous factors such as environmental conditions, lifestyle choices, disease states, and genetic susceptibility. It is tied to the accumulation of free radicals, mitochondrial dysfunction, and insufficient antioxidant protection, which leads to cell aging and tissue degeneration over time. Unregulated systemic increase in reactive species, which contain harmful free radicals, can lead to diverse tissue-specific OS responses and disease. Studies of OS in the brain, for example, have demonstrated how this state contributes to neurodegeneration and altered neural plasticity. As the worldwide life expectancy has increased over the last few decades, the prevalence of OS-related diseases resulting from age-associated progressive tissue degeneration. Unfortunately, vital translational research studies designed to identify and target disease biomarkers in human patients have been impeded by many factors (e.g., limited access to human brain tissue for research purposes and poor translation of experimental models). In recent years, stem cell-derived three-dimensional tissue cultures known as "brain organoids" have taken the spotlight as a novel model for studying central nervous system (CNS) diseases. In this review, we discuss the potential of brain organoids to model the responses of human neural cells to OS, noting current and prospective limitations. Overall, brain organoids show promise as an innovative translational model to study CNS susceptibility to OS and elucidate the pathophysiology of the aging brain.
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Affiliation(s)
- Foluwasomi A Oyefeso
- Department of Biomedical Engineering Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Alysson R Muotri
- Department of Pediatrics/Cellular and Molecular Medicine, University of California San Diego, San Diego, CA, USA
| | - Christopher G Wilson
- Lawrence D. Longo, MD, Center for Perinatal Biology, School of Medicine, Loma Linda University, Loma Linda, CA, USA
| | - Michael J Pecaut
- Department of Biomedical Engineering Sciences, School of Medicine, Loma Linda University, Loma Linda, CA, USA
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Zheng A, Liu H, Peng C, Gao X, Xu K, Tang B. A mitochondria-targeting near-infrared fluorescent probe for imaging hypochlorous acid in cells. Talanta 2021; 226:122152. [DOI: 10.1016/j.talanta.2021.122152] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/22/2021] [Accepted: 01/24/2021] [Indexed: 02/04/2023]
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Bittel DC, Bittel AJ, Varadhachary AS, Pietka T, Sinacore DR. Deficits in the Skeletal Muscle Transcriptome and Mitochondrial Coupling in Progressive Diabetes-Induced CKD Relate to Functional Decline. Diabetes 2021; 70:1130-1144. [PMID: 33526590 PMCID: PMC8173802 DOI: 10.2337/db20-0688] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 01/25/2021] [Indexed: 12/14/2022]
Abstract
Two-thirds of people with type 2 diabetes mellitus (T2DM) have or will develop chronic kidney disease (CKD), which is characterized by rapid renal decline that, together with superimposed T2DM-related metabolic sequelae, synergistically promotes early frailty and mobility deficits that increase the risk of mortality. Distinguishing the mechanisms linking renal decline to mobility deficits in CKD progression and/or increasing severity in T2DM is instrumental both in identifying those at high risk for functional decline and in formulating effective treatment strategies to prevent renal failure. While evidence suggests that skeletal muscle energetics may relate to the development of these comorbidities in advanced CKD, this has never been assessed across the spectrum of CKD progression, especially in T2DM-induced CKD. Here, using next-generation sequencing, we first report significant downregulation in transcriptional networks governing oxidative phosphorylation, coupled electron transport, electron transport chain (ETC) complex assembly, and mitochondrial organization in both middle- and late-stage CKD in T2DM. Furthermore, muscle mitochondrial coupling is impaired as early as stage 3 CKD, with additional deficits in ETC respiration, enzymatic activity, and increased redox leak. Moreover, mitochondrial ETC function and coupling strongly relate to muscle performance and physical function. Our results indicate that T2DM-induced CKD progression impairs physical function, with implications for altered metabolic transcriptional networks and mitochondrial functional deficits as primary mechanistic factors early in CKD progression in T2DM.
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Affiliation(s)
- Daniel C Bittel
- Program in Physical Therapy, Washington University School of Medicine, St. Louis, MO
| | - Adam J Bittel
- Program in Physical Therapy, Washington University School of Medicine, St. Louis, MO
| | - Arun S Varadhachary
- Department of Neurology, Washington University School of Medicine, St. Louis, MO
| | - Terri Pietka
- Center for Human Nutrition, Washington University School of Medicine, St. Louis, MO
| | - David R Sinacore
- Program in Physical Therapy, Washington University School of Medicine, St. Louis, MO
- Department of Physical Therapy, Congdon School of Health Sciences, High Point University, High Point, NC
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Organization of the Respiratory Supercomplexes in Cells with Defective Complex III: Structural Features and Metabolic Consequences. Life (Basel) 2021; 11:life11040351. [PMID: 33920624 PMCID: PMC8074069 DOI: 10.3390/life11040351] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 12/13/2022] Open
Abstract
The mitochondrial respiratory chain encompasses four oligomeric enzymatic complexes (complex I, II, III and IV) which, together with the redox carrier ubiquinone and cytochrome c, catalyze electron transport coupled to proton extrusion from the inner membrane. The protonmotive force is utilized by complex V for ATP synthesis in the process of oxidative phosphorylation. Respiratory complexes are known to coexist in the membrane as single functional entities and as supramolecular aggregates or supercomplexes (SCs). Understanding the assembly features of SCs has relevant biomedical implications because defects in a single protein can derange the overall SC organization and compromise the energetic function, causing severe mitochondrial disorders. Here we describe in detail the main types of SCs, all characterized by the presence of complex III. We show that the genetic alterations that hinder the assembly of Complex III, not just the activity, cause a rearrangement of the architecture of the SC that can help to preserve a minimal energetic function. Finally, the major metabolic disturbances associated with severe SCs perturbation due to defective complex III are discussed along with interventions that may circumvent these deficiencies.
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Wang Z, Zhao H, Gao Q, Chen K, Lan M. Facile synthesis of ultrathin two-dimensional graphene-like CeO 2-TiO 2 mesoporous nanosheet loaded with Ag nanoparticles for non-enzymatic electrochemical detection of superoxide anions in HepG2 cells. Biosens Bioelectron 2021; 184:113236. [PMID: 33872979 DOI: 10.1016/j.bios.2021.113236] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/16/2021] [Accepted: 04/06/2021] [Indexed: 01/10/2023]
Abstract
Here we presented a new facile strategy to fabricate ultrathin two-dimensional (2D) metal oxide nanosheets, by using polydopamine-coated graphene (rGO@PDA) as a template under simply wet-chemical conditions. Based on the strategy, graphene-like CeO2-TiO2 mesoporous nanosheet (MNS-CeO2-TiO2) was prepared and was loaded with dispersive Ag nanoparticles (AgNPs) to obtain effective electrocatalysts (denoted as Ag/MNS-CeO2-TiO2) for electrochemical detection of superoxide anion (O2•-). Characterizations demonstrated that MNS-CeO2-TiO2 exhibited ultrathin thickness, larger specific surface area, and pore volume in comparison with its bulk counterpart. The above properties of MNS-CeO2-TiO2 shorten electron transmission distance, promotes mass transfer, and is conducive to the dispersion of post-modified AgNPs. Therefore, the recommended Ag/MNS-CeO2-TiO2 sensors (denoted as Ag/MNS-CeO2-TiO2/SPCE) exhibited satisfactory properties, including the sensitivity of 737.1 μA cm-2 mM-1, the detection limit of 0.0879 μM (S/N = 3), and good selectivity. Meanwhile, the sensors also successfully realized in the online monitoring of O2•- released from HepG2 cells, meaning the prepared sensors had practical application potential towards the analysis of O2•- in biological samples.
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Affiliation(s)
- Zhenxing Wang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Hongli Zhao
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
| | - Qianmei Gao
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Kaicha Chen
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
| | - Minbo Lan
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, People's Republic of China; Research Center of Analysis and Test, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
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Coussa RG, Sohn EH, Han IC, Parikh S, Traboulsi EI. Mitochondrial DNA A3243G variant-associated retinopathy: a meta-analysis of the clinical course of visual acuity and correlation with systemic manifestations. Ophthalmic Genet 2021; 42:420-430. [PMID: 33827363 DOI: 10.1080/13816810.2021.1907598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
PURPOSE The mitochondrial DNA A3243G (m.3243A>G) variant causes a wide spectrum of phenotypes, with pigmentary retinopathy as the most common ocular finding. We undertook this meta-analysis to investigate the clinical course of visual acuity (VA) in patients with m.3243A>G variant and provide key clinical correlations with systemic manifestations. METHODS A PubMed literature search was performed and studies were selected after satisfying pre-set inclusion criteria. Demographic and clinical data, including retinal findings and systemic manifestations were recorded. Cross-sectional and linear regression analyses were used to investigate the relationship between VA and age, as well as between the age at diagnosis of retinopathy and the mean ages at diagnosis of sensorineural hearing loss or diabetes. The age and prevalence of systemic manifestations among patients with and without retinopathy were studied using t-tests and Mann-Whitney U-tests (performed on binarized data). Likelihood ratios were computed. RESULTS The mean VA (average of both eyes) of 90 patients (72.2% female; 65/90) were collected from 18 studies published between 1990 and 2018. The baseline mean age was 45.2 years (range 17 to 92). The mean logMAR VA was 0.10 (- 0.12 to 1.39). There was a statistically significant linear correlation between the logMAR VA and age (p = .008). The VA of patients less than or equal to 50 years of age was significantly better than that of patients older than 50 years (0.06 vs.0.18 logMAR, p = .002). 67 patients (74.4%) showed a characteristic pigmentary retinopathy with a mean age at diagnosis of 47.9 years (17 to 92) and VA of 0.14 logMAR (- 0.12 to 1.24). Age at diagnosis of retinopathy was linearly correlated with age at diagnosis of hearing loss or diabetes (p < .001). Patients with retinopathy were more likely to have hearing loss (83.6% vs. 56.5%, p = .03) or diabetes (56.7% vs. 17.4%, p = .001) than those without retinopathy. Those with both hearing loss and diabetes had an earlier onset of retinopathy than those without (46.4 vs. 60.4 years, p = .01). Patients without both hearing loss and diabetes were 5.3-fold less likely to develop a retinopathy. CONCLUSIONS Patients with m.3243A>G variant pigmentary retinopathy maintain highly functional VA until around the fifth decade of life, after which significant visual decline ensues. Patients without hearing loss and diabetes have a lower likelihood of exhibiting a retinopathy, which tends to appear about one decade after hearing loss and diabetes are diagnosed.
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Affiliation(s)
- Razek Georges Coussa
- Department of Ophthalmology and Visual Sciences, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Elliott H Sohn
- Department of Ophthalmology and Visual Sciences, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Ian C Han
- Department of Ophthalmology and Visual Sciences, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Sumit Parikh
- Cleveland Clinic, Mitochondrial Medicine Center, Cleveland, Ohio, USA
| | - Elias I Traboulsi
- Cleveland Clinic, Cole Eye Institute, Center for Genetic Eye Diseases, Cleveland, Ohio, USA
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Mollazadeh H, Tavana E, Fanni G, Bo S, Banach M, Pirro M, von Haehling S, Jamialahmadi T, Sahebkar A. Effects of statins on mitochondrial pathways. J Cachexia Sarcopenia Muscle 2021; 12:237-251. [PMID: 33511728 PMCID: PMC8061391 DOI: 10.1002/jcsm.12654] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/09/2020] [Accepted: 10/20/2020] [Indexed: 12/12/2022] Open
Abstract
Statins are a family of drugs that are used for treating hyperlipidaemia with a recognized capacity to prevent cardiovascular disease events. They inhibit β-hydroxy β-methylglutaryl-coenzyme A reductase, i.e. the rate-limiting enzyme in mevalonate pathway, reduce endogenous cholesterol synthesis, and increase low-density lipoprotein clearance by promoting low-density lipoprotein receptor expression mainly in the hepatocytes. Statins have pleiotropic effects including stabilization of atherosclerotic plaques, immunomodulation, anti-inflammatory properties, improvement of endothelial function, antioxidant, and anti-thrombotic action. Despite all beneficial effects, statins may elicit adverse reactions such as myopathy. Studies have shown that mitochondria play an important role in statin-induced myopathies. In this review, we aim to report the mechanisms of action of statins on mitochondrial function. Results have shown that statins have several effects on mitochondria including reduction of coenzyme Q10 level, inhibition of respiratory chain complexes, induction of mitochondrial apoptosis, dysregulation of Ca2+ metabolism, and carnitine palmitoyltransferase-2 expression. The use of statins has been associated with the onset of additional pathological conditions like diabetes and dementia as a result of interference with mitochondrial pathways by various mechanisms, such as reduction in mitochondrial oxidative phosphorylation, increase in oxidative stress, decrease in uncoupling protein 3 concentration, and interference in amyloid-β metabolism. Overall, data reported in this review suggest that statins may have major effects on mitochondrial function, and some of their adverse effects might be mediated through mitochondrial pathways.
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Affiliation(s)
- Hamid Mollazadeh
- Department of Physiology and Pharmacology, Faculty of MedicineNorth Khorasan University of Medical SciencesBojnurdIran
- Natural Products and Medicinal Plants Research CenterNorth Khorasan University of Medical SciencesBojnurdIran
| | - Erfan Tavana
- Student Research Committee, School of MedicineNorth Khorasan University of Medical SciencesBojnurdIran
| | - Giovanni Fanni
- Department of Medical SciencesUniversity of TurinTurinItaly
| | - Simona Bo
- Department of Medical Sciences, AOU Città della Salute e della Scienza di TorinoUniversity of TurinTurinItaly
| | - Maciej Banach
- Department of HypertensionWAM University Hospital in LodzMedical University of Lodz, LodzPoland
- Polish Mother's Memorial Hospital Research Institute (PMMHRI), LodzPoland
| | - Matteo Pirro
- Unit of Internal Medicine, Angiology and Arteriosclerosis Diseases, Department of MedicineUniversity of PerugiaPerugiaItaly
| | - Stephan von Haehling
- Department of Cardiology and PneumologyUniversity Medical Center GöttingenGöttingenGermany
- German Center for Cardiovascular Research (DZHK), partner site GöttingenGöttingenGermany
| | - Tannaz Jamialahmadi
- Department of Food Science and TechnologyIslamic Azad UniversityQuchanQuchanIran
- Department of Nutrition, Faculty of MedicineMashhad University of Medical SciencesMashhadIran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology InstituteMashhad University of Medical SciencesMashhadIran
- Neurogenic Inflammation Research CenterMashhad University of Medical SciencesMashhadIran
- Halal Research Center of IRIFDATehranIran
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Gavia-García G, Rosado-Pérez J, Arista-Ugalde TL, Aguiñiga-Sánchez I, Santiago-Osorio E, Mendoza-Núñez VM. Telomere Length and Oxidative Stress and Its Relation with Metabolic Syndrome Components in the Aging. BIOLOGY 2021; 10:253. [PMID: 33804844 PMCID: PMC8063797 DOI: 10.3390/biology10040253] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/20/2022]
Abstract
A great amount of scientific evidence supports that Oxidative Stress (OxS) can contribute to telomeric attrition and also plays an important role in the development of certain age-related diseases, among them the metabolic syndrome (MetS), which is characterised by clinical and biochemical alterations such as obesity, dyslipidaemia, arterial hypertension, hyperglycaemia, and insulin resistance, all of which are considered as risk factors for type 2 diabetes mellitus (T2DM) and cardiovascular diseases, which are associated in turn with an increase of OxS. In this sense, we review scientific evidence that supports the association between OxS with telomere length (TL) dynamics and the relationship with MetS components in aging. It was analysed whether each MetS component affects the telomere length separately or if they all affect it together. Likewise, this review provides a summary of the structure and function of telomeres and telomerase, the mechanisms of telomeric DNA repair, how telomere length may influence the fate of cells or be linked to inflammation and the development of age-related diseases, and finally, how the lifestyles can affect telomere length.
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Affiliation(s)
- Graciela Gavia-García
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico; (G.G.-G.); (J.R.-P.); (T.L.A.-U.)
| | - Juana Rosado-Pérez
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico; (G.G.-G.); (J.R.-P.); (T.L.A.-U.)
| | - Taide Laurita Arista-Ugalde
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico; (G.G.-G.); (J.R.-P.); (T.L.A.-U.)
| | - Itzen Aguiñiga-Sánchez
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico; (I.A.-S.); (E.S.-O.)
| | - Edelmiro Santiago-Osorio
- Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico; (I.A.-S.); (E.S.-O.)
| | - Víctor Manuel Mendoza-Núñez
- Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico; (G.G.-G.); (J.R.-P.); (T.L.A.-U.)
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Bandara AB, Drake JC, James CC, Smyth JW, Brown DA. Complex I protein NDUFS2 is vital for growth, ROS generation, membrane integrity, apoptosis, and mitochondrial energetics. Mitochondrion 2021; 58:160-168. [PMID: 33744462 DOI: 10.1016/j.mito.2021.03.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 01/12/2021] [Accepted: 03/08/2021] [Indexed: 12/21/2022]
Abstract
Complex I is the largest and most intricate of the protein complexes of mitochondrial electron transport chain (ETC). This L-shaped enzyme consists of a peripheral hydrophilic matrix domain and a membrane-bound orthogonal hydrophobic domain. The interfacial region between these two arms is known to be critical for binding of ubiquinone moieties and has also been shown to be the binding site of Complex I inhibitors. Knowledge on specific roles of the ETC interfacial region proteins is scarce due to lack of knockout cell lines and animal models. Here we mutated nuclear encoded NADH dehydrogenase [ubiquinone] iron-sulfur protein 2 (NDUFS2), one of three protein subunits of the interfacial region, in a human embryonic kidney cell line 293 using a CRISPR/Cas9 procedure. Disruption of NDUFS2 significantly decreased cell growth in medium, Complex I specific respiration, glycolytic capacity, ATP pool and cell-membrane integrity, but significantly increased Complex II respiration, ROS generation, apoptosis, and necrosis. Treatment with idebenone, a clinical benzoquinone currently being investigated in other indications, partially restored growth, ATP pool, and oxygen consumption of the mutant. Overall, our results suggest that NDUFS2 is vital for growth and metabolism of mammalian cells, and respiratory defects of NDUFS2 dysfunction can be partially corrected with treatment of an established mitochondrial therapeutic candidate. This is the first report to use CRISPR/Cas9 approach to construct a knockout NDUFS2 cell line and use the constructed mutant to evaluate the efficacy of a known mitochondrial therapeutic to enhance bioenergetic capacity.
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Affiliation(s)
- Aloka B Bandara
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA 24061, United States; Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA 24061, United States.
| | - Joshua C Drake
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA 24061, United States
| | - Carissa C James
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA 24016, United States; Graduate Program in Translational Biology, Medicine, and Health, Virginia Tech, Blacksburg, VA 24061, United States
| | - James W Smyth
- Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA 24016, United States; Virginia Tech Carilion School of Medicine, Roanoke, VA 24016, United States; Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, United States
| | - David A Brown
- Department of Human Nutrition, Foods, and Exercise, Virginia Tech, Blacksburg, VA 24061, United States; Mitochondrial Solutions, LLC, 800 Draper Road, Blacksburg VA 24060, United States
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65
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Song P, Yan B, Lei F, Qiu Z, Zhang C, Wu Y, Chen S, Yang X, Shen D, Ma P. Continuous artificial light at night exacerbates diisononyl phthalate-induced learning and memory impairment in mice: Toxicological evidence. Food Chem Toxicol 2021; 151:112102. [PMID: 33711377 DOI: 10.1016/j.fct.2021.112102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 02/22/2021] [Accepted: 03/03/2021] [Indexed: 02/01/2023]
Abstract
Previously, we reported that exposure to diisononyl phthalate (DINP) resulted in cognitive deficits and anxiety in mice (https://doi.org/10.1038/srep14676). Artificial light at night (ALAN) is now recognized as being a potential threat to human health. However, toxicological evidence concerning exposure to a combination of ALAN and DINP in vivo is limited. To this end, mice were orally exposed to different concentrations of DINP for 28 consecutive days, and ALAN (intensity 150 lux, every night for 12 h). The results showed that oxidative stress levels increased with increasing DINP exposure concentrations, which triggered apoptosis (Bcl-2 levels decreased, Bax levels increased), resulting in nerve cell damage and a decline in the learning and memory abilities of mice. The combined effects of ALAN and DINP exposure on the learning ability and memory of mice are more serious than for DINP exposure alone. The antioxidant vitamin E was shown to have a certain antagonistic effect on the oxidative damage caused by ALAN and DINP exposure. These results highlight a previously unknown relationship between exposure to ALAN and DINP-induced learning and memory impairment, and provide evidence that ALAN may be exacerbating the effects of DINP.
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Affiliation(s)
- Peng Song
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China; Five Senses Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China.
| | - Biao Yan
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China.
| | - Fan Lei
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China
| | - Zhuonan Qiu
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China
| | - Chi Zhang
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China
| | - Yang Wu
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China.
| | - Shaohui Chen
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China.
| | - Xu Yang
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China.
| | - Dingwen Shen
- Five Senses Medical College, Hubei University of Science and Technology, Xianning, 437100, PR China.
| | - Ping Ma
- Laboratory of Environment-immunological and neurological diseases, Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, 437100, PR China; Xianning Engineering Research Center for Healthy Environment, Xianning, 437100, PR China.
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66
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Bilinovich SM, Uhl KL, Lewis K, Soehnlen X, Williams M, Vogt D, Prokop JW, Campbell DB. Integrated RNA Sequencing Reveals Epigenetic Impacts of Diesel Particulate Matter Exposure in Human Cerebral Organoids. Dev Neurosci 2021; 42:195-207. [PMID: 33657557 DOI: 10.1159/000513536] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/02/2020] [Indexed: 12/25/2022] Open
Abstract
Autism spectrum disorder (ASD) manifests early in childhood. While genetic variants increase risk for ASD, a growing body of literature has established that in utero chemical exposures also contribute to ASD risk. These chemicals include air-based pollutants like diesel particulate matter (DPM). A combination of single-cell and direct transcriptomics of DPM-exposed human-induced pluripotent stem cell-derived cerebral organoids revealed toxicogenomic effects of DPM exposure during fetal brain development. Direct transcriptomics, sequencing RNA bases via Nanopore, revealed that cerebral organoids contain extensive RNA modifications, with DPM-altering cytosine methylation in oxidative mitochondrial transcripts expressed in outer radial glia cells. Single-cell transcriptomics further confirmed an oxidative phosphorylation change in cell groups such as outer radial glia upon DPM exposure. This approach highlights how DPM exposure perturbs normal mitochondrial function and cellular respiration during early brain development, which may contribute to developmental disorders like ASD by altering neurodevelopment.
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Affiliation(s)
- Stephanie M Bilinovich
- Department of Pediatrics & Human Development, Michigan State University, Grand Rapids, Michigan, USA
| | - Katie L Uhl
- Department of Pediatrics & Human Development, Michigan State University, Grand Rapids, Michigan, USA
| | - Kristy Lewis
- Department of Pediatrics & Human Development, Michigan State University, Grand Rapids, Michigan, USA
| | - Xavier Soehnlen
- Department of Pediatrics & Human Development, Michigan State University, Grand Rapids, Michigan, USA
| | - Michael Williams
- Department of Pediatrics & Human Development, Michigan State University, Grand Rapids, Michigan, USA.,Center for Research in Autism, Intellectual, and other Neurodevelopmental Disabilities, Michigan State University, East Lansing, Michigan, USA.,Neuroscience Program, Michigan State University, East Lansing, Michigan, USA
| | - Daniel Vogt
- Department of Pediatrics & Human Development, Michigan State University, Grand Rapids, Michigan, USA.,Center for Research in Autism, Intellectual, and other Neurodevelopmental Disabilities, Michigan State University, East Lansing, Michigan, USA.,Neuroscience Program, Michigan State University, East Lansing, Michigan, USA
| | - Jeremy W Prokop
- Department of Pediatrics & Human Development, Michigan State University, Grand Rapids, Michigan, USA.,Center for Research in Autism, Intellectual, and other Neurodevelopmental Disabilities, Michigan State University, East Lansing, Michigan, USA.,Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, USA
| | - Daniel B Campbell
- Department of Pediatrics & Human Development, Michigan State University, Grand Rapids, Michigan, USA, .,Center for Research in Autism, Intellectual, and other Neurodevelopmental Disabilities, Michigan State University, East Lansing, Michigan, USA, .,Neuroscience Program, Michigan State University, East Lansing, Michigan, USA,
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67
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Yasukawa K, Koshiba T. Mitochondrial reactive zones in antiviral innate immunity. Biochim Biophys Acta Gen Subj 2021; 1865:129839. [PMID: 33412226 DOI: 10.1016/j.bbagen.2020.129839] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 12/20/2020] [Accepted: 12/24/2020] [Indexed: 12/19/2022]
Abstract
Mitochondria are multi-functioning organelles that participate in a wide range of biologic processes from energy metabolism to cellular suicide. Mitochondria are also involved in the cellular innate immune response against microorganisms or environmental irritants, particularly in mammals. Mitochondrial-mediated innate immunity is achieved by the activation of two discrete signaling pathways, the NLR family pyrin domain-containing 3 inflammasomes and the retinoic acid-inducible gene I-like receptor pathway. In both pathways, a mitochondrial outer membrane adaptor protein, called mitochondrial antiviral signaling MAVS, and mitochondria-derived components play a key role in signal transduction. In this review, we discuss current insights regarding the fundamental phenomena of mitochondrial-related innate immune responses, and review the specific roles of various mitochondrial subcompartments in fine-tuning innate immune signaling events. We propose that specific targeting of mitochondrial functions is a potential therapeutic approach for the management of infectious diseases and autoinflammatory disorders with an excessive immune response.
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Affiliation(s)
- Kai Yasukawa
- Department of Biology, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Takumi Koshiba
- Department of Chemistry, Faculty of Science, Fukuoka University, Fukuoka 814-0180, Japan.
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68
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Song L, Gao C, Xue T, Yang N, Fu Q, Zhu Q, Ge X, Li C. Characterization and expression analysis of mitochondrial localization molecule: NOD-like receptor X1 (Nlrx1) in mucosal tissues of turbot (Scophthalmus maximus) following bacterial challenge. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 116:103944. [PMID: 33248045 DOI: 10.1016/j.dci.2020.103944] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/21/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
The NOD-like receptor X1 (NLRX1) is a member of highly conserved nucleotide-binding domain (NBD)- and leucine-rich-repeat (LRR)-containing family (known as NLR), that localizes to the mitochondrial outer membrane and regulate the innate immunity by interacting with mitochondrial antiviral-signaling protein (MAVS). As one of cytoplasmic PRRs, NLRX1 plays key roles for pathogen recognition, autophagy and regulating of subsequent immune signaling pathways. In this study, we identified the nlrx1 in turbot as well as its expression profiles in mucosal surfaces following bacterial infection. In our results, the full-length nlrx1 transcript consists of an open reading frame (ORF) of 4,886 bp encoding the putative peptide of 966 amino acids. The phylogenetic analysis revealed the SmNlrx1 showed the closest relationship to Cynoglossus semilaevis. In addition, the Nlrx1 mRNA expression could be detected in all the examined tissues, with the most abundant expression level in head kidney, and the lowest expression level in liver. Moreover, Nlrx1 showed similar expression patterns following Vibrio anguillarum and Streptococcus iniae infection, that were both significantly up-regulated following challenge, especially post S. iniae challenge. Finally, fluorescence microscopy unveiled that the SmNlrx1 localized to mitochondria in HEK293T by N-terminal mitochondrial targeting sequence. Characterization of Nlrx1 might have an important implication in bioenergetic adaptation during metabolic stress, oncogenic transformation and innate immunity and will probably contribute to the development of novel intervention strategies for farming turbot.
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Affiliation(s)
- Lin Song
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China; School of Life Science, Qingdao Agricultural University, Qingdao, 266109, China
| | - Chengbin Gao
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Ting Xue
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Ning Yang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Qiang Fu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Qing Zhu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xuefeng Ge
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Chao Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China.
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69
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Mitochondrial DNA A3243G variant-associated retinopathy: Current perspectives and clinical implications. Surv Ophthalmol 2021; 66:838-855. [PMID: 33610586 DOI: 10.1016/j.survophthal.2021.02.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/12/2022]
Abstract
Cellular function and survival are critically dependent on the proper functionality of the mitochondrion. Neurodegenerative cellular processes including cellular adenosine triphosphate production, intermediary metabolism control, and apoptosis regulation are all mitochondrially mediated. The A to G transition at position 3243 in the mitochondrial MTTL1 gene that encodes for the leucine transfer RNA (m.3243A>G) causes a variety of diseases, including maternally inherited loss of hearing and diabetes syndrome (MIDD), mitochondrial encephalopathy, lactic acidosis, and stroke-like episodes syndrome (MELAS). Ophthalmological findings-including posterior sub-capsular cataract, ptosis, external ophthalmoplegia, and pigmentary retinopathy- have all been associated with the m.3243A>G variant. Pigmentary retinopathy is, however, the most common ocular finding, occurring in 38% to 86% of cases. To date, little is known about the pathogenesis, natural history, and heteroplasmic and phenotypic correlations of m.3243A>G-associated pigmentary retinopathy. We summarize the current understanding of mitochondrial genetics and pathogenesis of some associated diseases. We then review the pathophysiology, histology, clinical features, treatment, and important ocular and systemic phenotypic manifestations of m.3243A>G variant associated retinopathy. Mitochondrial diseases require a multidisciplinary team approach to ensure effective treatment, regular follow-up, and accurate genetic counseling.
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70
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Qi X, Yang N, Luo Y, Jia X, Zhao J, Feng X, Chen L, Zhao Y. Resveratrol as a plant type antioxidant modifier for polysulfone membranes to improve hemodialysis-induced oxidative stress. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 123:111953. [PMID: 33812581 DOI: 10.1016/j.msec.2021.111953] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/24/2021] [Accepted: 02/04/2021] [Indexed: 10/22/2022]
Abstract
Resveratrol (RES) is a plant extract with excellent antioxidant, biocompatibility, anti-inflammatory and inhibition of platelet aggregation. RES-modified polysulfone (PSF) hemodialysis membranes have been fabricated using an immersion phase transformation method. The antioxidant properties of the blend membranes were evaluated in terms of their 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS+), reactive oxygen species (ROS) free radicals scavenging, total antioxidant capacity (T-AOC) of serum and lipid peroxidation inhibition. The observed results of decreasing DPPH and ABTS+ levels, scavenging ROS, significant inhibition of lipid peroxidation and improving the T-AOC of serum all contribute to the recovery of oxidative balance and the use of RES as an antioxidant modifier. The antioxidant stability of PSF/RES blend membranes was also studied. Moreover, the results of blood compatibility experiments showed that the addition of RES improved the blood compatibility of PSF membrane, inhibited the adhesion of red blood cells and platelets; inhibited complement activation; and reduced the blood cells deformation rate. The dialysis simulation experiment indicated that PSF/RES membrane (M-3) can clear 90.33% urea, 89.50% creatinine, 74.60% lysozyme and retention 90.47% BSA. All these results showed the new PSF/RES blend membranes have potential to be used in the field of hemodialysis to improve oxidative stress status in patients.
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Affiliation(s)
- Xuchao Qi
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Ning Yang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China.
| | - Ying Luo
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China; Tianjin Key Laboratory of Extracorporeal Life Support for Critical Diseases, Institute of Hepatobiliary Disease, Nankai University Affiliated Third Center Hospital, Tianjin 300170, People's Republic of China
| | - Xuemeng Jia
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Junqiang Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Xia Feng
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
| | - Li Chen
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China.
| | - Yiping Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, People's Republic of China
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71
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Yusuf M, Khan M, Alrobaian MM, Alghamdi SA, Warsi MH, Sultana S, Khan RA. Brain targeted Polysorbate-80 coated PLGA thymoquinone nanoparticles for the treatment of Alzheimer's disease, with biomechanistic insights. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102214] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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72
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Jurdak R, Launay-Avon A, Paysant-Le Roux C, Bailly C. Retrograde signalling from the mitochondria to the nucleus translates the positive effect of ethylene on dormancy breaking of Arabidopsis thaliana seeds. THE NEW PHYTOLOGIST 2021; 229:2192-2205. [PMID: 33020928 DOI: 10.1111/nph.16985] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/21/2020] [Indexed: 05/22/2023]
Abstract
Ethylene and reactive oxygen species (ROS) regulate seed dormancy alleviation, but the molecular basis of their action and crosstalk remains largely unknown. Here we studied the mechanism of Arabidopsis seed dormancy release by ethylene using cell imaging, and genetic and transcriptomics approaches, in order to tackle its possible interaction with ROS homeostasis. We found that the effect of ethylene on seed germination required ROS production by the mitochondrial electron transport chain. Seed response to ethylene involved a mitochondrial retrograde response (MRR) through nuclear ROS production and upregulation of the MRR components AOX1a and ANAC013, but also required the activation of the ethylene canonical pathway. Together our data allowed deciphering of the mode of action of ethylene on seed germination and the associated dynamics of ROS production. Our findings highlight the occurrence of retrograde signalling in seed germination.
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Affiliation(s)
- Rana Jurdak
- IBPS, CNRS, UMR 7622 Biologie du Développement, Sorbonne Université, Paris, F-75005, France
- Biodiversity and Functional Genomics Laboratory, Université Saint-Joseph de Beyrouth, Beyrouth, 1107 2050, Lebanon
| | - Alexandra Launay-Avon
- CNRS, INRAE, Université d'Evry, Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, Orsay, 91405, France
- CNRS, INRAE, Institute of Plant Sciences Paris-Saclay (IPS2), Université de Paris, Orsay, 91405, France
| | - Christine Paysant-Le Roux
- CNRS, INRAE, Université d'Evry, Institute of Plant Sciences Paris-Saclay (IPS2), Université Paris-Saclay, Orsay, 91405, France
- CNRS, INRAE, Institute of Plant Sciences Paris-Saclay (IPS2), Université de Paris, Orsay, 91405, France
| | - Christophe Bailly
- IBPS, CNRS, UMR 7622 Biologie du Développement, Sorbonne Université, Paris, F-75005, France
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73
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Izzo C, Vitillo P, Di Pietro P, Visco V, Strianese A, Virtuoso N, Ciccarelli M, Galasso G, Carrizzo A, Vecchione C. The Role of Oxidative Stress in Cardiovascular Aging and Cardiovascular Diseases. Life (Basel) 2021; 11:60. [PMID: 33467601 PMCID: PMC7829951 DOI: 10.3390/life11010060] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 12/12/2022] Open
Abstract
Aging can be seen as process characterized by accumulation of oxidative stress induced damage. Oxidative stress derives from different endogenous and exogenous processes, all of which ultimately lead to progressive loss in tissue and organ structure and functions. The oxidative stress theory of aging expresses itself in age-related diseases. Aging is in fact a primary risk factor for many diseases and in particular for cardiovascular diseases and its derived morbidity and mortality. Here we highlight the role of oxidative stress in age-related cardiovascular aging and diseases. We take into consideration the molecular mechanisms, the structural and functional alterations, and the diseases accompanied to the cardiovascular aging process.
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Affiliation(s)
- Carmine Izzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Paolo Vitillo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Paola Di Pietro
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Valeria Visco
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Andrea Strianese
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Nicola Virtuoso
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Michele Ciccarelli
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Gennaro Galasso
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
| | - Albino Carrizzo
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
- Department of Angio-Cardio-Neurology, Vascular Physiopathology Unit, IRCCS Neuromed, 86077 Pozzilli, Isernia, Italy
| | - Carmine Vecchione
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, 84081 Salerno, Italy; (C.I.); (P.V.); (P.D.P.); (V.V.); (A.S.); (N.V.); (M.C.); (G.G.); (A.C.)
- Department of Angio-Cardio-Neurology, Vascular Physiopathology Unit, IRCCS Neuromed, 86077 Pozzilli, Isernia, Italy
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74
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Costa TJ, Barros PR, Arce C, Santos JD, da Silva-Neto J, Egea G, Dantas AP, Tostes RC, Jiménez-Altayó F. The homeostatic role of hydrogen peroxide, superoxide anion and nitric oxide in the vasculature. Free Radic Biol Med 2021; 162:615-635. [PMID: 33248264 DOI: 10.1016/j.freeradbiomed.2020.11.021] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/08/2020] [Accepted: 11/19/2020] [Indexed: 02/07/2023]
Abstract
Reactive oxygen and nitrogen species are produced in a wide range of physiological reactions that, at low concentrations, play essential roles in living organisms. There is a delicate equilibrium between formation and degradation of these mediators in a healthy vascular system, which contributes to maintaining these species under non-pathological levels to preserve normal vascular functions. Antioxidants scavenge reactive oxygen and nitrogen species to prevent or reduce damage caused by excessive oxidation. However, an excessive reductive environment induced by exogenous antioxidants may disrupt redox balance and lead to vascular pathology. This review summarizes the main aspects of free radical biochemistry (formation, sources and elimination) and the crucial actions of some of the most biologically relevant and well-characterized reactive oxygen and nitrogen species (hydrogen peroxide, superoxide anion and nitric oxide) in the physiological regulation of vascular function, structure and angiogenesis. Furthermore, current preclinical and clinical evidence is discussed on how excessive removal of these crucial responses by exogenous antioxidants (vitamins and related compounds, polyphenols) may perturb vascular homeostasis. The aim of this review is to provide information of the crucial physiological roles of oxidation in the endothelium, vascular smooth muscle cells and perivascular adipose tissue for developing safer and more effective vascular interventions with antioxidants.
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Affiliation(s)
- Tiago J Costa
- Pharmacology Department, Ribeirao Preto Medical School, University of São Paulo, Brazil.
| | | | - Cristina Arce
- Department of Biomedical Sciences, University of Barcelona School of Medicine and Health Sciences, Barcelona, Spain; Institut d'Investigacions Biomédiques August Pi i Sunyer (IDIBAPS)-University of Barcelona, Barcelona, Spain; Institut de Nanociencies i Nanotecnologia (IN2UB), University of Barcelona, Barcelona, Spain
| | | | - Júlio da Silva-Neto
- Pharmacology Department, Ribeirao Preto Medical School, University of São Paulo, Brazil
| | - Gustavo Egea
- Department of Biomedical Sciences, University of Barcelona School of Medicine and Health Sciences, Barcelona, Spain; Institut d'Investigacions Biomédiques August Pi i Sunyer (IDIBAPS)-University of Barcelona, Barcelona, Spain; Institut de Nanociencies i Nanotecnologia (IN2UB), University of Barcelona, Barcelona, Spain
| | - Ana Paula Dantas
- Institut Clínic del Tòrax, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Rita C Tostes
- Pharmacology Department, Ribeirao Preto Medical School, University of São Paulo, Brazil
| | - Francesc Jiménez-Altayó
- Department of Pharmacology, Therapeutics and Toxicology, Neuroscience Institute, School of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain.
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75
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Gounaris Y. A proposed free radical explanation for the differential response of long-day and short-day plants to photoperiod. JOURNAL OF PLANT RESEARCH 2021; 134:177-178. [PMID: 33128634 DOI: 10.1007/s10265-020-01234-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 10/14/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Yannis Gounaris
- Department of Agriculture, University of Thessaly, Fytokou Street, 48446, New Ionia, Greece.
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76
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Pavanello S, Campisi M, Mastrangelo G, Hoxha M, Bollati V. The effects of everyday-life exposure to polycyclic aromatic hydrocarbons on biological age indicators. Environ Health 2020; 19:128. [PMID: 33272294 PMCID: PMC7713168 DOI: 10.1186/s12940-020-00669-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 10/16/2020] [Indexed: 05/25/2023]
Abstract
BACKGROUND Further knowledge on modifiable aging risk factors is required to mitigate the increasing burden of age-related diseases in a rapidly growing global demographic of elderly individuals. We explored the effect of everyday exposure to polycyclic aromatic hydrocarbons (PAHs), which are fundamental constituents of air pollution, on cellular biological aging. This was determined via the analysis of leukocyte telomere length (LTL), mitochondrial DNA copy number (LmtDNAcn), and by the formation of anti-benzo[a]pyrene diolepoxide (B[a]PDE-DNA) adducts. METHODS The study population consisted of 585 individuals living in North-East Italy. PAH exposure (diet, indoor activities, outdoor activities, traffic, and residential exposure) and smoking behavior were assessed by questionnaire and anti-B[a]PDE-DNA by high-performance-liquid-chromatography. LTL, LmtDNAcn and genetic polymorphisms [glutathione S-transferase M1 and T1 (GSTM1; GSTT1)] were measured by polymerase chain reaction. Structural equation modelling analysis evaluated these complex relationships. RESULTS Anti-B[a]PDE-DNA enhanced with PAH exposure (p = 0.005) and active smoking (p = 0.0001), whereas decreased with detoxifying GSTM1 (p = 0.021) and in females (p = 0.0001). Subsequently, LTL and LmtDNAcn reduced with anti-B[a]PDE-DNA (p = 0.028 and p = 0.018), particularly in males (p = 0.006 and p = 0.0001). Only LTL shortened with age (p = 0.001) while elongated with active smoking (p = 0.0001). Besides this, the most significant determinants of PAH exposure that raised anti-B[a]PDE-DNA were indoor and diet (p = 0.0001), the least was outdoor (p = 0.003). CONCLUSION New findings stemming from our study suggest that certain preventable everyday life exposures to PAHs reduce LTL and LmtDNAcn. In particular, the clear association with indoor activities, diet, and gender opens new perspectives for tailored preventive measures in age-related diseases. CAPSULE Everyday life exposure to polycyclic aromatic hydrocarbons reduces leukocyte telomere length and mitochondrial DNA copy number through anti-B[a]PDE-DNA adduct formation.
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Affiliation(s)
- Sofia Pavanello
- Medicina del Lavoro, Dipartimento di Scienze Cardio- Toraco- Vascolari e Sanità Pubblica, Università di Padova, Padova, Italy
- Azienda Ospedaliera di Padova, Unità di Medicina del Lavoro, Padova, Italy
| | - Manuela Campisi
- Medicina del Lavoro, Dipartimento di Scienze Cardio- Toraco- Vascolari e Sanità Pubblica, Università di Padova, Padova, Italy
| | - Giuseppe Mastrangelo
- Medicina del Lavoro, Dipartimento di Scienze Cardio- Toraco- Vascolari e Sanità Pubblica, Università di Padova, Padova, Italy
| | - Mirjam Hoxha
- EPIGET – Epidemiology, Epigenetics and Toxicology Lab, Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
| | - Valentina Bollati
- EPIGET – Epidemiology, Epigenetics and Toxicology Lab, Dipartimento di Scienze Cliniche e di Comunità, Università degli Studi di Milano, Milan, Italy
- Dipartimento di Medicina Preventiva, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
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Xu WN, Yang RZ, Zheng HL, Jiang LS, Jiang SD. NDUFA4L2 Regulated by HIF-1α Promotes Metastasis and Epithelial-Mesenchymal Transition of Osteosarcoma Cells Through Inhibiting ROS Production. Front Cell Dev Biol 2020; 8:515051. [PMID: 33330441 PMCID: PMC7714780 DOI: 10.3389/fcell.2020.515051] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 09/28/2020] [Indexed: 12/12/2022] Open
Abstract
Osteosarcoma (OS) accounts for a large proportion of the types of bone tumors that are newly diagnosed, and is a relatively common bone tumor. However, there are still no effective treatments for this affliction. One interesting avenue is related to the mitochondrial NDUFA4L2 protein, which is encoded by the nuclear gene and is known to be a critical mediator in the regulation of cell survival. Thus, in this study, we aimed to investigate the effect of NDUFA4L2 upon the metastasis and epithelial–mesenchymal transition of OS. We found that NDUFA4L2 protein expression was upregulated in hypoxic conditions. We also used 2-ME and DMOG, which are HIF-1α inhibitors and agonists, respectively, to assess the effects related to decreasing or increasing HIF-1α expression. 2-ME caused a significant decrease of NDUFA4L2 expression and DMOG had the opposite effect. It was obvious that down-regulation of NDUFA4L2 had a direct interaction with the apoptosis of OS cells. Western blotting, wound healing analyses, Transwell invasion assays, and colony formation assays all indicated and supported the conclusion that NDUFA4L2 promoted OS cell migration, invasion, proliferation, and the epithelial–mesenchymal transition. During experiments, we incidentally discovered that autophagy and the ROS inhibitor could be used to facilitate the rescuing of tumor cells whose NDUFA4L2 was knocked down. Our findings will help to further elucidate the dynamics underlying the mechanism of OS cells and have provided a novel therapeutic target for the treatment of OS.
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Affiliation(s)
- Wen-Ning Xu
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Run-Ze Yang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huo-Liang Zheng
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei-Sheng Jiang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sheng-Dan Jiang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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78
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Honda Igarashi M, da Silva SG, Mercuri M, Zuardi FMDON, Facchini G, da Silva GH, Lucia Tabarini Alves Pinheiro A, Eberlin S. Novel complex of cosmetic ingredients with promising action in preventing hair loss and follicular aging through mechanism involving enrichment of WNT/signaling, mitochondrial activity, and stem cells maintenance. J Cosmet Dermatol 2020; 20:2179-2189. [PMID: 33179848 DOI: 10.1111/jocd.13815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/01/2020] [Accepted: 10/15/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Mechanisms involved in hair metabolism are diverse, and the availability of ingredients that normalize dysfunctions or mitigate the effects of extrinsic stress suffered daily is greatly desired by consumers to improve the aesthetic appearance of hair. AIMS In this work, we carried out a preclinical exploratory approach to evaluate the effects of a complex of nanoencapsulated active ingredients (AcPi), as well as a cosmetic formulation containing AcPi (ShPi and HtPi) in mechanisms involving hair loss and follicular aging. METHODS Human hair follicle dermal papilla cells and human scalp culture were treated with AcPi, ShPi, or HtPi and stimulated with UV radiation or testosterone for further measurement of mitochondrial biogenesis, reactive oxygen species (ROS), β-catenin, dyhidrotestosterone (DHT), collagen XVIIα1 (COL17A1), and cutaneous permeation. RESULTS Our results demonstrated that AcPi prevents oxidative stress and balances mitochondial activity disturbed by exposure to UV radiation. AcPi also promoted an enrichment of WNT/β-catenin signaling pathway, stimulating hair growth, and lengthening the anagen phase of hair cycle. ShPi and HtPi were able to prevent hair aging, minimizing the excessive degradation of COL17A1 in hair follicle exposed to UV radiation, in addition to controlling androgenic metabolism by reducing DHT production. CONCLUSION The integral effects of AcPi have not been completely elucidated; however, these results, associated with clinical evidences, allow us to infer that this ingredient prevents follicular aging, miniaturization, and consequently hair loss by mechanisms involving energetic homeostasis maintenance, antioxidant, and anti-androgenic actions.
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Affiliation(s)
- Mamy Honda Igarashi
- Hypera Pharma - Mantecorp Skincare, Hynova, Alphaville, São Paulo-SP, Brazil
| | | | - Maurizio Mercuri
- Hypera Pharma - Mantecorp Skincare, Hynova, Alphaville, São Paulo-SP, Brazil
| | | | | | | | | | - Samara Eberlin
- Kosmoscience Group, Rua Sandoval Meirelles, Campinas-SP, Brazil
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79
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Brand MD. Riding the tiger - physiological and pathological effects of superoxide and hydrogen peroxide generated in the mitochondrial matrix. Crit Rev Biochem Mol Biol 2020; 55:592-661. [PMID: 33148057 DOI: 10.1080/10409238.2020.1828258] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Elevated mitochondrial matrix superoxide and/or hydrogen peroxide concentrations drive a wide range of physiological responses and pathologies. Concentrations of superoxide and hydrogen peroxide in the mitochondrial matrix are set mainly by rates of production, the activities of superoxide dismutase-2 (SOD2) and peroxiredoxin-3 (PRDX3), and by diffusion of hydrogen peroxide to the cytosol. These considerations can be used to generate criteria for assessing whether changes in matrix superoxide or hydrogen peroxide are both necessary and sufficient to drive redox signaling and pathology: is a phenotype affected by suppressing superoxide and hydrogen peroxide production; by manipulating the levels of SOD2, PRDX3 or mitochondria-targeted catalase; and by adding mitochondria-targeted SOD/catalase mimetics or mitochondria-targeted antioxidants? Is the pathology associated with variants in SOD2 and PRDX3 genes? Filtering the large literature on mitochondrial redox signaling using these criteria highlights considerable evidence that mitochondrial superoxide and hydrogen peroxide drive physiological responses involved in cellular stress management, including apoptosis, autophagy, propagation of endoplasmic reticulum stress, cellular senescence, HIF1α signaling, and immune responses. They also affect cell proliferation, migration, differentiation, and the cell cycle. Filtering the huge literature on pathologies highlights strong experimental evidence that 30-40 pathologies may be driven by mitochondrial matrix superoxide or hydrogen peroxide. These can be grouped into overlapping and interacting categories: metabolic, cardiovascular, inflammatory, and neurological diseases; cancer; ischemia/reperfusion injury; aging and its diseases; external insults, and genetic diseases. Understanding the involvement of mitochondrial matrix superoxide and hydrogen peroxide concentrations in these diseases can facilitate the rational development of appropriate therapies.
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80
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Effects of Novel Tacrine Derivatives on Mitochondrial Energy Metabolism and Monoamine Oxidase Activity-In Vitro Study. Mol Neurobiol 2020; 58:1102-1113. [PMID: 33089424 DOI: 10.1007/s12035-020-02172-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/14/2020] [Indexed: 11/27/2022]
Abstract
The trends of novel AD therapeutics are focused on multitarget-directed ligands (MTDLs), which combine cholinesterase inhibition with additional biological properties such as antioxidant properties to positively affect neuronal energy metabolism as well as mitochondrial function. We examined the in vitro effects of 10 novel MTDLs on the activities of mitochondrial enzymes (electron transport chain complexes and citrate synthase), mitochondrial respiration, and monoamine oxidase isoform (MAO-A and MAO-B) activity. The drug-induced effects of 7-MEOTA-adamantylamine heterodimers (K1011, K1013, K1018, K1020, and K1022) and tacrine/7-MEOTA/6-chlorotacrine-trolox heterodimers (K1046, K1053, K1056, K1060, and K1065) were measured in pig brain mitochondria. Most of the substances inhibited complex I- and complex II-linked respiration at high concentrations; K1046, K1053, K1056, and K1060 resulted in the least inhibition of mitochondrial respiration. Citrate synthase activity was not significantly inhibited by the tested substances; the least inhibition of complex I was observed for compounds K1060 and K1053, while both complex II/III and complex IV activity were markedly inhibited by K1011 and K1018. MAO-A was fully inhibited by K1018 and K1065, and MAO-B was fully inhibited by K1053 and K1065; the other tested drugs were partial inhibitors of both MAO-A and MAO-B. The tacrine/7-MEOTA/6-chlorotacrine-trolox heterodimers K1046, K1053, and K1060 seem to be the most suitable molecules for subsequent in vivo studies. These compounds had balanced inhibitory effects on mitochondrial respiration, with low complex I and complex II/III inhibition and full or partial inhibition of MAO-B activity.
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81
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Egea G, Jiménez-Altayó F, Campuzano V. Reactive Oxygen Species and Oxidative Stress in the Pathogenesis and Progression of Genetic Diseases of the Connective Tissue. Antioxidants (Basel) 2020; 9:antiox9101013. [PMID: 33086603 PMCID: PMC7603119 DOI: 10.3390/antiox9101013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/14/2020] [Accepted: 10/14/2020] [Indexed: 12/18/2022] Open
Abstract
Connective tissue is known to provide structural and functional “glue” properties to other tissues. It contains cellular and molecular components that are arranged in several dynamic organizations. Connective tissue is the focus of numerous genetic and nongenetic diseases. Genetic diseases of the connective tissue are minority or rare, but no less important than the nongenetic diseases. Here we review the impact of reactive oxygen species (ROS) and oxidative stress on the onset and/or progression of diseases that directly affect connective tissue and have a genetic origin. It is important to consider that ROS and oxidative stress are not synonymous, although they are often closely linked. In a normal range, ROS have a relevant physiological role, whose levels result from a fine balance between ROS producers and ROS scavenge enzymatic systems. However, pathology arises or worsens when such balance is lost, like when ROS production is abnormally and constantly high and/or when ROS scavenge (enzymatic) systems are impaired. These concepts apply to numerous diseases, and connective tissue is no exception. We have organized this review around the two basic structural molecular components of connective tissue: The ground substance and fibers (collagen and elastic fibers).
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Affiliation(s)
- Gustavo Egea
- Department of Biomedical Science, University of Barcelona School of Medicine and Health Sciences, 08036 Barcelona, Spain;
- Institut d’Investigacions Biomédiques August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain
- Institut de Nanociencies I Nanotecnologia (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Correspondence: ; Tel.: +34-934-021-909
| | - Francesc Jiménez-Altayó
- Departament of Pharmacology, Therapeutics, and Toxicology, Neuroscience Institute, Autonomous University of Barcelona, 08193 Barcelona, Spain;
| | - Victoria Campuzano
- Department of Biomedical Science, University of Barcelona School of Medicine and Health Sciences, 08036 Barcelona, Spain;
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Long Y, Liu J, Tian D, Dai F, Zhang S, Zhou B. Cooperation of ESIPT and ICT Processes in the Designed 2-(2′-Hydroxyphenyl)benzothiazole Derivative: A Near-Infrared Two-Photon Fluorescent Probe with a Large Stokes Shift for the Detection of Cysteine and Its Application in Biological Environments. Anal Chem 2020; 92:14236-14243. [DOI: 10.1021/acs.analchem.0c03490] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ying Long
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Junru Liu
- School of Life Sciences, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Dihua Tian
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Shengxiang Zhang
- School of Life Sciences, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
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83
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Machado-Oliveira G, Ramos C, Marques ARA, Vieira OV. Cell Senescence, Multiple Organelle Dysfunction and Atherosclerosis. Cells 2020; 9:E2146. [PMID: 32977446 PMCID: PMC7598292 DOI: 10.3390/cells9102146] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/19/2020] [Accepted: 09/20/2020] [Indexed: 01/10/2023] Open
Abstract
Atherosclerosis is an age-related disorder associated with long-term exposure to cardiovascular risk factors. The asymptomatic progression of atherosclerotic plaques leads to major cardiovascular diseases (CVD), including acute myocardial infarctions or cerebral ischemic strokes in some cases. Senescence, a biological process associated with progressive structural and functional deterioration of cells, tissues and organs, is intricately linked to age-related diseases. Cell senescence involves coordinated modifications in cellular compartments and has been demonstrated to contribute to different stages of atheroma development. Senescence-based therapeutic strategies are currently being pursued to treat and prevent CVD in humans in the near-future. In addition, distinct experimental settings allowed researchers to unravel potential approaches to regulate anti-apoptotic pathways, facilitate excessive senescent cell clearance and eventually reverse atherogenesis to improve cardiovascular function. However, a deeper knowledge is required to fully understand cellular senescence, to clarify senescence and atherogenesis intertwining, allowing researchers to establish more effective treatments and to reduce the cardiovascular disorders' burden. Here, we present an objective review of the key senescence-related alterations of the major intracellular organelles and analyze the role of relevant cell types for senescence and atherogenesis. In this context, we provide an updated analysis of therapeutic approaches, including clinically relevant experiments using senolytic drugs to counteract atherosclerosis.
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Affiliation(s)
- Gisela Machado-Oliveira
- CEDOC, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal; (C.R.); (A.R.A.M.)
| | | | | | - Otília V. Vieira
- CEDOC, NOVA Medical School, Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal; (C.R.); (A.R.A.M.)
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84
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Finelli MJ. Redox Post-translational Modifications of Protein Thiols in Brain Aging and Neurodegenerative Conditions-Focus on S-Nitrosation. Front Aging Neurosci 2020; 12:254. [PMID: 33088270 PMCID: PMC7497228 DOI: 10.3389/fnagi.2020.00254] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/24/2020] [Indexed: 12/14/2022] Open
Abstract
Reactive oxygen species and reactive nitrogen species (RONS) are by-products of aerobic metabolism. RONS trigger a signaling cascade that can be transduced through oxidation-reduction (redox)-based post-translational modifications (redox PTMs) of protein thiols. This redox signaling is essential for normal cellular physiology and coordinately regulates the function of redox-sensitive proteins. It plays a particularly important role in the brain, which is a major producer of RONS. Aberrant redox PTMs of protein thiols can impair protein function and are associated with several diseases. This mini review article aims to evaluate the role of redox PTMs of protein thiols, in particular S-nitrosation, in brain aging, and in neurodegenerative diseases. It also discusses the potential of using redox-based therapeutic approaches for neurodegenerative conditions.
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Affiliation(s)
- Mattéa J Finelli
- School of Medicine, Biodiscovery Institute, University of Nottingham, Nottingham, United Kingdom
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85
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Manhas N, Duong QV, Lee P, Richardson JD, Robertson JD, Moxley MA, Bazil JN. Computationally modeling mammalian succinate dehydrogenase kinetics identifies the origins and primary determinants of ROS production. J Biol Chem 2020; 295:15262-15279. [PMID: 32859750 DOI: 10.1074/jbc.ra120.014483] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/25/2020] [Indexed: 01/01/2023] Open
Abstract
Succinate dehydrogenase (SDH) is an inner mitochondrial membrane protein complex that links the Krebs cycle to the electron transport system. It can produce significant amounts of superoxide ([Formula: see text]) and hydrogen peroxide (H2O2); however, the precise mechanisms are unknown. This fact hinders the development of next-generation antioxidant therapies targeting mitochondria. To help address this problem, we developed a computational model to analyze and identify the kinetic mechanism of [Formula: see text] and H2O2 production by SDH. Our model includes the major redox centers in the complex, namely FAD, three iron-sulfur clusters, and a transiently bound semiquinone. Oxidation state transitions involve a one- or two-electron redox reaction, each being thermodynamically constrained. Model parameters were simultaneously fit to many data sets using a variety of succinate oxidation and free radical production data. In the absence of respiratory chain inhibitors, model analysis revealed the 3Fe-4S iron-sulfur cluster as the primary [Formula: see text] source. However, when the quinone reductase site is inhibited or the quinone pool is highly reduced, [Formula: see text] is generated primarily by the FAD. In addition, H2O2 production is only significant when the enzyme is fully reduced, and fumarate is absent. Our simulations also reveal that the redox state of the quinone pool is the primary determinant of free radical production by SDH. In this study, we showed the importance of analyzing enzyme kinetics and associated side reactions in a consistent, quantitative, and biophysically detailed manner using a diverse set of experimental data to interpret and explain experimental observations from a unified perspective.
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Affiliation(s)
- Neeraj Manhas
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA
| | - Quynh V Duong
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
| | - Pilhwa Lee
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Joshua D Richardson
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA
| | - John D Robertson
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA
| | - Michael A Moxley
- Department of Chemistry, University of Nebraska, Kearney, Nebraska, USA
| | - Jason N Bazil
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA.
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Luo Y, Ma J, Lu W. The Significance of Mitochondrial Dysfunction in Cancer. Int J Mol Sci 2020; 21:ijms21165598. [PMID: 32764295 PMCID: PMC7460667 DOI: 10.3390/ijms21165598] [Citation(s) in RCA: 133] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 02/06/2023] Open
Abstract
As an essential organelle in nucleated eukaryotic cells, mitochondria play a central role in energy metabolism, maintenance of redox balance, and regulation of apoptosis. Mitochondrial dysfunction, either due to the TCA cycle enzyme defects, mitochondrial DNA genetic mutations, defective mitochondrial electron transport chain, oxidative stress, or aberrant oncogene and tumor suppressor signaling, has been observed in a wide spectrum of human cancers. In this review, we summarize mitochondrial dysfunction induced by these alterations that promote human cancers.
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Affiliation(s)
- Yongde Luo
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325000, China
- Division of Gastroenterology and Hepatology, Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA;
- Correspondence: (Y.L.); (W.L.)
| | - Jianjia Ma
- Division of Gastroenterology and Hepatology, Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA;
| | - Weiqin Lu
- Division of Gastroenterology and Hepatology, Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA;
- Correspondence: (Y.L.); (W.L.)
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87
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Xu N, Jiang S, Persson PB, Persson EAG, Lai EY, Patzak A. Reactive oxygen species in renal vascular function. Acta Physiol (Oxf) 2020; 229:e13477. [PMID: 32311827 DOI: 10.1111/apha.13477] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/22/2020] [Accepted: 04/14/2020] [Indexed: 12/14/2022]
Abstract
Reactive oxygen species (ROS) are produced by the aerobic metabolism. The imbalance between production of ROS and antioxidant defence in any cell compartment is associated with cell damage and may play an important role in the pathogenesis of renal disease. NADPH oxidase (NOX) family is the major ROS source in the vasculature and modulates renal perfusion. Upregulation of Ang II and adenosine activates NOX via AT1R and A1R in renal microvessels, leading to superoxide production. Oxidative stress in the kidney prompts renal vascular remodelling and increases preglomerular resistance. These are key elements in hypertension, acute and chronic kidney injury, as well as diabetic nephropathy. Renal afferent arterioles (Af), the primary resistance vessel in the kidney, fine tune renal hemodynamics and impact on blood pressure. Vice versa, ROS increase hypertension and diabetes, resulting in upregulation of Af vasoconstriction, enhancement of myogenic responses and change of tubuloglomerular feedback (TGF), which further promotes hypertension and diabetic nephropathy. In the following, we highlight oxidative stress in the function and dysfunction of renal hemodynamics. The renal microcirculatory alterations brought about by ROS importantly contribute to the pathophysiology of kidney injury, hypertension and diabetes.
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Affiliation(s)
- Nan Xu
- Department of Physiology Zhejiang University School of Medicine Hangzhou China
| | - Shan Jiang
- Department of Physiology Zhejiang University School of Medicine Hangzhou China
| | - Pontus B. Persson
- Charité ‐ Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Institute of Vegetative Physiology Berlin Germany
| | | | - En Yin Lai
- Department of Physiology Zhejiang University School of Medicine Hangzhou China
- Charité ‐ Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Institute of Vegetative Physiology Berlin Germany
| | - Andreas Patzak
- Charité ‐ Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin Humboldt‐Universität zu Berlin, and Berlin Institute of Health Institute of Vegetative Physiology Berlin Germany
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88
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Noce A, Bocedi A, Campo M, Marrone G, Di Lauro M, Cattani G, Di Daniele N, Romani A. A Pilot Study of a Natural Food Supplement as New Possible Therapeutic Approach in Chronic Kidney Disease Patients. Pharmaceuticals (Basel) 2020; 13:ph13070148. [PMID: 32664308 PMCID: PMC7408446 DOI: 10.3390/ph13070148] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/30/2020] [Accepted: 07/07/2020] [Indexed: 02/08/2023] Open
Abstract
The identification of natural bioactive compounds, able to counteract the abnormal increase of oxidative stress and inflammatory status in chronic degenerative non-communicable diseases is useful for the clinical management of these conditions. We tested an oral food supplement (OFS), chemically characterized and evaluated for in vitro and in vivo activity. Vitamin C, analyzed by High Performance Liquid Chromatography-Diode Array Detector (HPLC-DAD), was 0.19 mg/g in rosehip dry extract and 15.74 mg/capsule in the OFS. The identification of polyphenols was performed by HPLC-DAD; the total antioxidant capacity was assessed by Folin-Ciocalteu test. Total polyphenols were 14.73 mg/g gallic acid equivalents (GAE) for rosehip extract and 1.93 mg/g GAE for OFS. A total of 21 chronic kidney disease (CKD) patients and 10 healthy volunteers were recruited. The evaluation of routine laboratory and inflammatory parameters, erythrocyte glutathione transferase (e-GST), human oxidized serum albumin (HSAox), and assessment of body composition were performed at two different times, at baseline and after 5 weeks of OFS assumption. In the study, we highlighted a significant decrease of traditional inflammatory biomarkers (such as C-reactive protein, erythrocyte sedimentation rate, platelet to lymphocyte ratio) and other laboratory parameters like e-GST, azotaemia, and albuminuria after OFS treatment in CKD patients. Moreover, we demonstrated a lipid profile improvement in CKD patients after OFS supplementation.
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Affiliation(s)
- Annalisa Noce
- UOC of Internal Medicine-Center of Hypertension and Nephrology Unit, Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (G.M.); (M.D.L.); (N.D.D.)
- Correspondence: (A.N.); (A.R.); Tel.: +39-06-20902188 (A.N.); +39-055-457377 (A.R.); Fax: +39-06-20902096 (A.N.); +39-055-2751525 (A.R.)
| | - Alessio Bocedi
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (A.B.); (G.C.)
| | - Margherita Campo
- PHYTOLAB (Pharmaceutical, Cosmetic, Food Supplement, Technology and Analysis)-DiSIA, University of Florence, Via U. Schiff, 6, 50019 Sesto Fiorentino, Italy;
| | - Giulia Marrone
- UOC of Internal Medicine-Center of Hypertension and Nephrology Unit, Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (G.M.); (M.D.L.); (N.D.D.)
- School of Applied Medical, Surgical Sciences, University of Rome Tor Vergata, via Montpellier 1, 00133 Rome, Italy
| | - Manuela Di Lauro
- UOC of Internal Medicine-Center of Hypertension and Nephrology Unit, Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (G.M.); (M.D.L.); (N.D.D.)
| | - Giada Cattani
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (A.B.); (G.C.)
| | - Nicola Di Daniele
- UOC of Internal Medicine-Center of Hypertension and Nephrology Unit, Department of Systems Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, Italy; (G.M.); (M.D.L.); (N.D.D.)
| | - Annalisa Romani
- PHYTOLAB (Pharmaceutical, Cosmetic, Food Supplement, Technology and Analysis)-DiSIA, University of Florence, Via U. Schiff, 6, 50019 Sesto Fiorentino, Italy;
- Correspondence: (A.N.); (A.R.); Tel.: +39-06-20902188 (A.N.); +39-055-457377 (A.R.); Fax: +39-06-20902096 (A.N.); +39-055-2751525 (A.R.)
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89
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Mitochondrial apoptosis and proteolytic changes of myofibrillar proteins in two different pork muscles during aging. Food Chem 2020; 319:126571. [DOI: 10.1016/j.foodchem.2020.126571] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/07/2020] [Accepted: 03/05/2020] [Indexed: 01/01/2023]
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90
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Huang CP, Lin YW, Huang YC, Tsai FJ. Mitochondrial Dysfunction as a Novel Target for Neuroprotective Nutraceuticals in Ocular Diseases. Nutrients 2020; 12:nu12071950. [PMID: 32629966 PMCID: PMC7400242 DOI: 10.3390/nu12071950] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/23/2020] [Accepted: 06/29/2020] [Indexed: 12/12/2022] Open
Abstract
The eyes require a rich oxygen and nutrient supply; hence, the high-energy demand of the visual system makes it sensitive to oxidative stress. Excessive free radicals result in mitochondrial dysfunction and lead to retinal neurodegeneration, as an early stage of retinal metabolic disorders. Retinal cells are vulnerable because of their coordinated interaction and intricate neural networks. Nutraceuticals are believed to target multiple pathways and have shown neuroprotective benefits by scavenging free radicals and promoting mitochondrial gene expression. Furthermore, encouraging results demonstrate that nutraceuticals improve the organization of retinal cells and visual functions. This review discusses the mitochondrial impairments of retinal cells and the mechanisms underlying the neuroprotective effects of nutraceuticals. However, some unsolved problems still exist between laboratory study and clinical therapy. Poor bioavailability and bioaccessibility strongly limit their development. A new delivery system and improved formulation may offer promise for health care applications.
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Affiliation(s)
- Chun-Ping Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
| | - Yi-Wen Lin
- Graduate Institute of Acupuncture Science, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
| | - Yu-Chuen Huang
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
- Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan
- Correspondence: (Y.-C.H.); (F.-J.T.)
| | - Fuu-Jen Tsai
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
- Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan
- Children’s Hospital of China Medical University, Taichung 404, Taiwan
- Department of Medical Genetics, China Medical University Hospital, Taichung 404, Taiwan
- Correspondence: (Y.-C.H.); (F.-J.T.)
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91
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Guo L, Wang X, Ji H. Clinical Phenotype and Genetic Features of a Pair of Chinese Twins with Kearns-Sayre Syndrome. DNA Cell Biol 2020; 39:1449-1457. [PMID: 32609007 DOI: 10.1089/dna.2019.5010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Kearns-Sayre Syndrome (KSS) is a severe mitochondrial disorder involving the central nervous system, eyes, ears, skeletal muscles, and heart. The mitochondrial DNA (mtDNA) rearrangements, especially the deletions, are present in almost all KSS patients and considered as the disease-causing factor. However, the size and position of mtDNA deletions are distinct in different individuals. In this study, we report the case of a pair of Chinese twins with KSS. The twin patients revealed typical KSS clinical symptoms, including heart block, bilateral sensorineural hearing loss, progressive external ophthalmoplegia, exercise intolerance, proximal limb weakness, and endocrine disorders. Using long-range polymerase chain reactions (long-range PCR) and next-generation sequencing (NGS), the genetic features of the twin patients were investigated. A large 6600 bp mtDNA deletion, ranging from position 8702 to 15,302, was detected in both patients. To our knowledge, this kind of mtDNA deletion has never been described previously. Our study enriched the mutation spectrum of KSS and showed that NGS is a powerful tool for detecting mtDNA large variants.
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Affiliation(s)
- Luo Guo
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, ENT Institute and Otorhinolaryngology Department, Fudan University Eye & ENT Hospital, Shanghai, People's Republic of China.,NHC Key Laboratory of Hearing Medicine and Fudan University, Shanghai, People's Republic of China
| | - Xin Wang
- Institutes of Biomedical Sciences, Fudan University, Shanghai, People's Republic of China.,Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Nantong University, Nantong, People's Republic of China
| | - Haiting Ji
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, ENT Institute and Otorhinolaryngology Department, Fudan University Eye & ENT Hospital, Shanghai, People's Republic of China.,NHC Key Laboratory of Hearing Medicine and Fudan University, Shanghai, People's Republic of China.,Department of Otorhinolaryngology, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, China
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92
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Mazumder GA, Uddin A, Chakraborty S. Analysis of codon usage pattern of mitochondrial ND genes in Platyhelminthes. Mol Biochem Parasitol 2020; 238:111294. [PMID: 32592756 DOI: 10.1016/j.molbiopara.2020.111294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/18/2020] [Accepted: 06/20/2020] [Indexed: 01/24/2023]
Abstract
Codon usage bias (CUB) is the nonrandom usage of synonymous codons in which some codons are more preferred to others.CUB can be determined by mutation pressure and selection. Various approaches have been used to understand the pattern of CUB in the mitochondrial ND (MT-ND or ND) genes involved in complex I of respiratory chain in five different classes of Platyhelminthes as no work was reported yet. The present study revealed that the CUB varies across MT-ND genes and the coding sequences showed the richness of A and T. Correspondence analysis implied the effect of mutational pressure and also the pattern of codon usage was different in different classes of platyhelminthes for MT-ND genes. Highly significant correlation was observed between overall nucleotide composition and its 3rd codon position in most of the homogeneous nucleotides such as A% and A3%, T% and T3%, G% and G3%, C% and C3%, GC% and GC3% and also some significant correlations observed among heterogeneous nucleotides in all the five classes for MT-ND genes suggested the role of mutational pressure as well as natural selection in affecting the CUB. Neutrality plot suggested that the contributions of natural selection and mutational pressure varied across different classes of platyhelminthes and also differed in different MT-ND genes.
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Affiliation(s)
| | - Arif Uddin
- Moinul Hoque Choudhury Memorial Science College, Algapur, Hailakandi, 788150 Assam, India
| | - Supriyo Chakraborty
- Department of Biotechnology, Assam University, Silchar, 788011 Assam, India.
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93
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Zhang T, Shuai M, Ma P, Huang J, Sun C, Yao X, Chen Z, Min X, Yan S. Purification, chemical analysis and antioxidative activity of polysaccharides from pH-modified citrus pectin after dialyzation. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109513] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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94
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Altobelli GG, Van Noorden S, Balato A, Cimini V. Copper/Zinc Superoxide Dismutase in Human Skin: Current Knowledge. Front Med (Lausanne) 2020; 7:183. [PMID: 32478084 PMCID: PMC7235401 DOI: 10.3389/fmed.2020.00183] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 04/17/2020] [Indexed: 12/18/2022] Open
Abstract
Superoxide dismutase is widespread in the human body, including skin and its appendages. Here, we focus on human skin copper/zinc superoxide dismutase, the enzyme that protects skin and its appendages against reactive oxygen species. Human skin copper/zinc superoxide dismutase resides in the cytoplasm of keratinocytes, where up to 90% of cellular reactive oxygen species is produced. Factors other than cell type, such as gender, age and diseased state influence its location in skin tissues. We review current knowledge of skin copper/zinc superoxide dismutase including recent studies in an attempt to contribute to solving the question of its remaining unexplained functions. The research described here may be applicable to pathologies associated with oxidative stress. However, recent studies on copper/zinc superoxide dismutase in yeast reveal that its predominant function may be in signaling pathways rather than in scavenging superoxide ions. If confirmed in the skin, novel approaches might be developed to unravel the enzyme's remaining mysteries.
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Affiliation(s)
- Giovanna G Altobelli
- Department of Advanced Biomedical Sciences, Medical School, "Federico II" University of Naples, Naples, Italy
| | - Susan Van Noorden
- Department of Histopathology, Imperial College London, Hammersmith Hospital, London, United Kingdom
| | - Anna Balato
- Department of Advanced Biomedical Sciences, Medical School, "Federico II" University of Naples, Naples, Italy
| | - Vincenzo Cimini
- Department of Advanced Biomedical Sciences, Medical School, "Federico II" University of Naples, Naples, Italy
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95
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Shao Z, Koh W, Ni Y, Li W, Agatisa-Boyle B, Merkurjev D, Tang WHW. RNA Sequence Analyses throughout the Course of Mouse Cardiac Laminopathy Identify Differentially Expressed Genes for Cell Cycle Control and Mitochondrial Function. Sci Rep 2020; 10:6632. [PMID: 32313136 PMCID: PMC7170950 DOI: 10.1038/s41598-020-63563-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 03/30/2020] [Indexed: 12/03/2022] Open
Abstract
Lamin A/C (LMNA) gene mutations are a known cause of familial dilated cardiomyopathy, but the precise mechanisms triggering disease progression remain unknown. We hypothesize that analysis of differentially expressed genes (DEGs) throughout the course of Lmna knockout (Lmna-/-)-induced cardiomyopathy may reveal novel Lmna-mediated alterations of signaling pathways leading to dilated cardiomyopathy. Although Lmna was the only DEG down-regulated at 1 week of age, we identified 730 and 1004 DEGs in Lmna-/- mice at 2 weeks and 1 month of age, respectively. At 2 weeks, Lmna-/- mice demonstrated both down- and up-regulation of the key genes involving cell cycle control, mitochondrial dysfunction, and oxidative phosphorylation, as well as down-regulated genes governing DNA damage repair and up-regulated genes involved in oxidative stress response, cell survival, and cardiac hypertrophy. At 1 month, the down-regulated genes included those involved in oxidative phosphorylation, mitochondrial dysfunction, nutrient metabolism, cardiac β-adrenergic signaling, action potential generation, and cell survival. We also found 96 overlapping DEGs at both ages involved in oxidative phosphorylation, mitochondrial function, and calcium signaling. Impaired oxidative phosphorylation was observed at early disease stage, even before the appearance of disease phenotypes, and worsened with disease progression, suggesting its importance in the pathogenesis and progression of LMNA cardiomyopathy. Reduction of oxidative stress might therefore prevent or delay the development from Lmna mutation to LMNA cardiomyopathy.
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Affiliation(s)
- Zhili Shao
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Wonshill Koh
- Department of Cardiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Ying Ni
- Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Wei Li
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV, USA
| | - Brendan Agatisa-Boyle
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Daria Merkurjev
- Division of Cardiology, Department of Medicine, University of California at Los Angeles, Los Angeles, CA, USA
| | - Wai Hong Wilson Tang
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA.
- Kaufman Center for Heart Failure Treatment and Recovery, Department of Cardiovascular Medicine, Heart, Vascular & Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA.
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96
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Huihui Z, Xin L, Yupeng G, Mabo L, Yue W, Meijun A, Yuehui Z, Guanjun L, Nan X, Guangyu S. Physiological and proteomic responses of reactive oxygen species metabolism and antioxidant machinery in mulberry (Morus alba L.) seedling leaves to NaCl and NaHCO 3 stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 193:110259. [PMID: 32097787 DOI: 10.1016/j.ecoenv.2020.110259] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/13/2020] [Accepted: 01/27/2020] [Indexed: 05/20/2023]
Abstract
In this paper, the effects of 100 mM NaCl and NaHCO3 stress on reactive oxygen species (ROS) and physiological and proteomic aspects of ROS metabolism in mulberry seedling leaves were studied. The results showed that NaCl stress had little effect on photosynthesis and respiration of mulberry seedling leaves. Superoxide dismutase (SOD) activity and the expression of related proteins in leaves increased by varying degrees, and accumulation of superoxide anion (O2·-) not observed. Under NaHCO3 stress, photosynthesis and respiration were significantly inhibited, while the rate of O2·- production rate and H2O2 content increased. The activity of catalase (CAT) and the expression of CAT (W9RJ43) increased under NaCl stress. In response to NaHCO3 stress, the activity and expression of CAT were significantly decreased, but the ability of H2O2 scavenging of peroxidase (POD) was enhanced. The ascorbic acid-glutathione (AsA-GSH) cycle in mulberry seedling leaves was enhancement in both NaCl and NaHCO3 stress. The expression of 2-Cys peroxiredoxin BAS1 (2-Cys Prx BAS1), together with thioredoxin F (TrxF), thioredoxin O1 (TrxO1), thioredoxin-like protein CITRX (Trx CITRX), and thioredoxin-like protein CDSP32 (Trx CDSP32) were significantly increased under NaCl stress. Under NaHCO3 stress, the expression of the electron donor of ferredoxin-thioredoxin reductase (FTR), together with Trx-related proteins, such as thioredoxin M (TrxM), thioredoxin M4 (TrxM4), thioredoxin X (TrxX), TrxF, and Trx CSDP32 were significantly decreased, suggesting that the thioredoxin-peroxiredoxin (Trx-Prx) pathway's function of scavenging H2O2 of in mulberry seedling leaves was inhibited. Taken together, under NaCl stress, excessive production of O2·- mulberry seedlings leaves was inhibited, and H2O2 was effectively scavenged by CAT, AsA-GSH cycle and Trx-Prx pathway. Under NaHCO3 stress, despite the enhanced functions of POD and AsA-GSH cycle, the scavenging of O2·- by SOD was not effective, and that of H2O2 by CAT and Trx-Prx pathway were inhibited; and in turn, the oxidative damage to mulberry seedling leaves could not be reduced.
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Affiliation(s)
- Zhang Huihui
- College of Resources and Environment, Northeast Agricultural University, Harbin, Heilongjiang, China; Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Li Xin
- College of Resources and Environment, Northeast Agricultural University, Harbin, Heilongjiang, China; Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Guan Yupeng
- College of Resources and Environment, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Li Mabo
- College of Resources and Environment, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Wang Yue
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China
| | - An Meijun
- Developmental Center of Heilongjiang Provincial Sericulture and Bee Industry, Harbin, Heilongjiang, China
| | - Zhang Yuehui
- Developmental Center of Heilongjiang Provincial Sericulture and Bee Industry, Harbin, Heilongjiang, China
| | - Liu Guanjun
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), School of Forestry, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Xu Nan
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China; Natural Resources and Ecology Institute, Heilongjiang Sciences Academy, Harbin, Heilongjiang, China.
| | - Sun Guangyu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China.
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97
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Yang KE, Jang HJ, Hwang IH, Hong EM, Lee MG, Lee S, Jang IS, Choi JS. Stereoisomer-specific ginsenoside 20( S)-Rg3 reverses replicative senescence of human diploid fibroblasts via Akt-mTOR-Sirtuin signaling. J Ginseng Res 2020; 44:341-349. [PMID: 32148417 PMCID: PMC7031753 DOI: 10.1016/j.jgr.2019.08.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 08/01/2019] [Accepted: 08/07/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The replicative senescence of human dermal fibroblasts (HDFs) is accompanied by growth arrest. In our previous study, the treatment of senescent HDFs with Rg3(S) lowered the intrinsic reactive oxygen species (ROS) levels and reversed cellular senescence by inducing peroxiredoxin-3, an antioxidant enzyme. However, the signaling pathways involved in Rg3(S)-induced senescence reversal in HDFs and the relatedness of the stereoisomer Rg3(R) in corresponding signaling pathways are not known yet. METHODS We performed senescence-associated β-galactosidase and cell cycle assays in Rg3(S)-treated senescent HDFs. The levels of ROS, adenosine triphosphate (ATP), and cyclic adenosine monophosphate (cAMP) as well as the mitochondrial DNA copy number, nicotinamide adenine dinucleotide (NAD)+/1,4-dihydronicotinamide adenine dinucleotide (NADH) ratio, and NAD-dependent sirtuins expression were measured and compared among young, old, and Rg3(S)-pretreated old HDFs. Major signaling pathways of phosphatidylinositol 3-kinase/Akt, 5' adenosine monophosphate-activated protein kinase (AMPK), and sirtuin 1/3, including cell cycle regulatory proteins, were examined by immunoblot analysis. RESULTS Ginsenoside Rg3(S) reversed the replicative senescence of HDFs by restoring the ATP level and NAD+/NADH ratio in downregulated senescent HDFs. Rg3(S) recovered directly the cellular levels of ROS and the NAD+/NADH ratio in young HDFs inactivated by rotenone. Rg3(S) mainly downregulated phosphatidylinositol 3-kinase/Akt through the inhibition of mTOR by cell cycle regulators like p53/p21 in senescent HDFs, whereas Rg3(R) did not alter the corresponding signaling pathways. Rg3(S)-activated sirtuin 3/PGC1α to stimulate mitochondrial biogenesis. CONCLUSION Cellular molecular analysis suggests that Rg3(S) specifically reverses the replicative senescence of HDFs by modulating Akt-mTOR-sirtuin signaling to promote the biogenesis of mitochondria.
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Affiliation(s)
- Kyeong-Eun Yang
- Biological Disaster Analysis Group, Korea Basic Science Institute, Daejeon, Republic of Korea
| | - Hyun-Jin Jang
- Biological Disaster Analysis Group, Korea Basic Science Institute, Daejeon, Republic of Korea
- Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea
| | - In-Hu Hwang
- Neuroscience Research institute, Korea University College of Medicine, Seoul, Republic of Korea
| | - Eun Mi Hong
- Biological Disaster Analysis Group, Korea Basic Science Institute, Daejeon, Republic of Korea
| | - Min-Goo Lee
- Department of Physiology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Soon Lee
- Division of Bio-Analytical Science, University of Science and Technology, Daejeon, Republic of Korea
| | - Ik-Soon Jang
- Biological Disaster Analysis Group, Korea Basic Science Institute, Daejeon, Republic of Korea
- Division of Bio-Analytical Science, University of Science and Technology, Daejeon, Republic of Korea
| | - Jong-Soon Choi
- Biological Disaster Analysis Group, Korea Basic Science Institute, Daejeon, Republic of Korea
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Republic of Korea
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98
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Hudson L, Rashdan E, Bonn CA, Chavan B, Rawlings D, Birch‐Machin MA. Individual and combined effects of the infrared, visible, and ultraviolet light components of solar radiation on damage biomarkers in human skin cells. FASEB J 2020; 34:3874-3883. [PMID: 31944399 PMCID: PMC7079185 DOI: 10.1096/fj.201902351rr] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/18/2019] [Accepted: 12/23/2019] [Indexed: 11/30/2022]
Abstract
The ability of solar ultraviolet (UV) to induce skin cancer and photoaging is well recognized. The effect of the infrared (IR) and visible light (Vis) components of solar radiation on skin and their interaction with UV is less well known. This study compared the effects of physiologically relevant doses of complete (UV + Vis + IR) solar-simulated light and its individual components on matched primary dermal fibroblasts and epidermal keratinocytes from human donors on three biomarkers of cellular damage (reactive oxygen species (ROS) generation, mitochondrial DNA (mtDNA), and nuclear DNA (nDNA) damage). There was a greater induction of ROS, mtDNA, and nDNA damage with the inclusion of the visible and IR components of solar-simulated light in primary fibroblast cells compared to primary keratinocytes (P < .001). Experiments using exposure to specific components of solar light alone or in combination showed that the UV, Vis, and IR components of solar light synergistically increased ROS generation in primary fibroblasts but not primary keratinocytes (P < .001). Skin cell lines were used to confirm these findings. These observations have important implications for different skin cell type responses to the individual and interacting components of solar light and therefore photodamage mechanisms and photoprotection interventions.
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Affiliation(s)
- Laura Hudson
- Dermatological SciencesTranslational and Clinical Research InstituteMedical SchoolNewcastle UniversityNewcastle upon TyneNE2 4HHUK
| | - Eyman Rashdan
- Dermatological SciencesTranslational and Clinical Research InstituteMedical SchoolNewcastle UniversityNewcastle upon TyneNE2 4HHUK
| | - Catherine A. Bonn
- Dermatological SciencesTranslational and Clinical Research InstituteMedical SchoolNewcastle UniversityNewcastle upon TyneNE2 4HHUK
| | | | - David Rawlings
- Northern Medical Physics and Clinical EngineeringFreeman HospitalNewcastle upon TyneUK
| | - Mark A. Birch‐Machin
- Dermatological SciencesTranslational and Clinical Research InstituteMedical SchoolNewcastle UniversityNewcastle upon TyneNE2 4HHUK
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99
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Walker OS, Ragos R, Wong MK, Adam M, Cheung A, Raha S. Reactive oxygen species from mitochondria impacts trophoblast fusion and the production of endocrine hormones by syncytiotrophoblasts. PLoS One 2020; 15:e0229332. [PMID: 32092105 PMCID: PMC7039444 DOI: 10.1371/journal.pone.0229332] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 02/04/2020] [Indexed: 12/23/2022] Open
Abstract
The placenta, a tissue that is metabolically active and rich in mitochondria, forms a critical interface between the mother and developing fetus. Oxidative stress within this tissue, derived from the dysregulation of reactive oxygen species (ROS), has been linked to a number of adverse fetal outcomes. While such outcomes have been associated with mitochondrial dysfunction, the causal role of mitochondrial dysfunction and mitochondrially generated ROS in altering the process of placentation remains unclear. In this study, mitochondrial complex I activity was attenuated using 10 nM rotenone to induce cellular oxidative stress by increasing mitochondrial ROS production in the BeWo choriocarcinoma cell line. Increased mitochondrial ROS resulted in a significant decrease in the transcripts which encode for proteins associated with fusion (GCM1, ERVW-1, and ERVFRD-1) resulting in a 5-fold decrease in the percentage of BeWo fusion. This outcome was associated with increased indicators of mitochondrial fragmentation, as determined by decreased expression of MFN2 and OPA1 along with an increase in a marker of mitochondrial fission (DRP1). Importantly, increased mitochondrial ROS also resulted in a 5.0-fold reduction of human placental lactogen (PL) and a 4.4-fold reduction of insulin like growth factor 2 (IGF2) transcripts; hormones which play an important role in regulating fetal growth. The pre-treatment of rotenone-exposed cells with 5 mM N-acetyl cysteine (NAC) resulted in the prevention of these ROS mediated changes in BeWo function and supports a central role for mitochondrial ROS signaling in the maintenance and function of the materno-fetal interface.
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Affiliation(s)
- O’Llenecia S. Walker
- Department of Pediatrics and the Graduate Program in Medical Sciences, McMaster University, Hamilton, Canada
| | - Rehginald Ragos
- Department of Pediatrics and the Graduate Program in Medical Sciences, McMaster University, Hamilton, Canada
| | - Michael K. Wong
- Department of Pediatrics and the Graduate Program in Medical Sciences, McMaster University, Hamilton, Canada
| | - Mohamed Adam
- Department of Pediatrics and the Graduate Program in Medical Sciences, McMaster University, Hamilton, Canada
| | - Anson Cheung
- Department of Pediatrics and the Graduate Program in Medical Sciences, McMaster University, Hamilton, Canada
| | - Sandeep Raha
- Department of Pediatrics and the Graduate Program in Medical Sciences, McMaster University, Hamilton, Canada
- * E-mail:
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100
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Evaluation of the Oxidative Stress Response of Aging Yeast Cells in Response to Internalization of Fluorescent Nanodiamond Biosensors. NANOMATERIALS 2020; 10:nano10020372. [PMID: 32093318 PMCID: PMC7075316 DOI: 10.3390/nano10020372] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/13/2020] [Accepted: 02/15/2020] [Indexed: 12/31/2022]
Abstract
Fluorescent nanodiamonds (FNDs) are proposed to be used as free radical biosensors, as they function as magnetic sensors, changing their optical properties depending on their magnetic surroundings. Free radicals are produced during natural cell metabolism, but when the natural balance is disturbed, they are also associated with diseases and aging. Sensitive methods to detect free radicals are challenging, due to their high reactivity and transiency, providing the need for new biosensors such as FNDs. Here we have studied in detail the stress response of an aging model system, yeast cells, upon FND internalization to assess whether one can safely use this biosensor in the desired model. This was done by measuring metabolic activity, the activity of genes involved in different steps and the locations of the oxidative stress defense systems and general free radical activity. Only minimal, transient FND-related stress effects were observed, highlighting excellent biocompatibility in the long term. This is a crucial milestone towards the applicability of FNDs as biosensors in free radical research.
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