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Liu D, Gao L, Zhang Z, Tao S, Pang Q, Li A, Deng H, Yu H. Lithium promotes the production of reactive oxygen species via GSK-3β/TSC2/TOR signaling in the gill of zebrafish (Danio rerio). CHEMOSPHERE 2018; 195:854-863. [PMID: 29291576 DOI: 10.1016/j.chemosphere.2017.12.130] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 12/20/2017] [Accepted: 12/21/2017] [Indexed: 06/07/2023]
Abstract
In this study, the mechanism that lithium (Li) promotes the production of reactive oxygen species (ROS) via the glycogen synthase kinase-3β (GSK-3β)/tuberous sclerosis complex 2 (TSC2)/target of rapamycin (TOR) signaling was investigated in the gill of zebrafish (Danio rerio). After the zebrafish were treated by 25 and 50 mg/L Li+, the mRNA expression of GSK-3β and TSC2 was inhibited, but the expression of TOR was induced in the gill of zebrafish. The levels of hydrogen peroxide (H2O2), superoxide anion (O2·-), and hydroxy radical (·OH) as well as the activity of superoxide dismutase (SOD) were increased, while the activities of catalase (CAT), glutathione peroxidase (GSH-PX), and peroxidase (POD) were decreased by 25 and 50 mg/L Li+ treatments. In the ZF4 cells, the mRNA expression of GSK-3β and TSC2 was inhibited, but TOR expression was induced by 1, 5, and 10 mmol/L Li+ treatments. To further confirm that lithium promoted ROS production via GSK-3β inhibition, GSK-3β RNA was interfered. It was found that the interference of GSK-3β RNA induced the TSC2/TOR signaling. The levels of H2O2, O2·-, and ·OH were increased, but the activities of CAT, GSH-PX, and POD were decreased by GSK-3β RNA interference. In addition, lithium decreased the mitochondrial membrane potential (MMP) with Rhodamine-123 assay, but increased the levels of ROS by 2',7'-dichlorofluorescein diacetate (DCFH-DA) assay. The present results indicated that lithium promoted the ROS production through the GSK-3β/TSC2/TOR signaling in the gill of zebrafish.
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Affiliation(s)
- Dongwu Liu
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Lili Gao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Zhuangzhuang Zhang
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Shiyi Tao
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Qiuxiang Pang
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China.
| | - Ao Li
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Hongkuan Deng
- Laboratory of Developmental and Evolutionary Biology, School of Life Sciences, Shandong University of Technology, Zibo 255049, China; Anti-aging & Regenerative Medicine Research Institution, School of Life Sciences, Shandong University of Technology, Zibo 255049, China
| | - Hairui Yu
- College of Biological and Agricultural Engineering, Weifang Bioengineering Technology Research Center, Weifang University, Weifang 261061, China
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Akki R, Siracusa R, Morabito R, Remigante A, Campolo M, Errami M, La Spada G, Cuzzocrea S, Marino A. Neuronal-like differentiated SH-SY5Y cells adaptation to a mild and transient H 2 O 2 -induced oxidative stress. Cell Biochem Funct 2018; 36:56-64. [PMID: 29431194 DOI: 10.1002/cbf.3317] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/13/2017] [Accepted: 12/26/2017] [Indexed: 01/30/2023]
Abstract
Preconditioning (PC) is a cell adaptive response to oxidative stress and, with regard to neurons, can be considered as a neuroprotective strategy. The aim of the present study was to verify how neuronal-like differentiated SH-SY5Y cells adapt to a mild and transient H2 O2 -induced oxidative stress and, hence, whether may be considered as more sensitive cell model to study PC pathways. A first screening allowed to define H2 O2 concentrations for PC (10μM-50μM), applied before damage(100μM H2 O2 ). Cell viability measured 24 hours after 100μM H2 O2 -induced damage was ameliorated by 24-hour pre-exposure to low-concentration H2 O2 (10μM-30μM) with cell size as well restored. Markers for apoptosis (Bcl-2 and Bad), inflammation (iNOS), and redox system (MnSOD) were also determined, showing that, in cells pre-exposed to 10μM H2 O2 and then submitted to 100μM H2 O2 , Bcl-2 levels were higher, Bad and iNOS levels were lower than those observed in damaged cells, and MnSOD levels were unchanged. Such findings show that (1) neuronal-like differentiated SH-SY5Y cells are a suitable model to investigate PC response and more sensitive to the effect of a mild and transient H2 O2 -induced oxidative stress with respect to other neuronal cells; (2) 10μM H2 O2 -induced PC is mediated by apoptotic and inflammatory pathways, unlike antioxidant system; (3) such neuroprotective strategy and underlying signals proven in neuronal-like differentiated SH-SY5Y cells may contribute to understand in vivo PC mechanisms and to define a window for pharmacological intervention, namely, related to ischemic brain damage. SIGNIFICANCE OF THE STUDY Neuronal-like differentiated SH-SY5Y cells are a suitable model to investigate PC, an endogenous neuroprotective response to a mild and transient H2 O2 -induced oxidative stress, elicited by 24-hour exposure to very low H2 O2 concentrations and mediated by both apoptotic and inflammatory pathways. This model reflects in vivo PC mechanisms occurring after brain trauma and provides novel information about pathways and time of protection useful for an appropriate pharmacological intervention.
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Affiliation(s)
- Rachid Akki
- Department of Biology, Faculty of Science, University of Abdelmalek Essaadi, Tétouan, Morocco
| | - Rosalba Siracusa
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Rossana Morabito
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Alessia Remigante
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Michela Campolo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Mohammed Errami
- Department of Biology, Faculty of Science, University of Abdelmalek Essaadi, Tétouan, Morocco
| | - Giuseppina La Spada
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Salvatore Cuzzocrea
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
| | - Angela Marino
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy
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Birnie-Gauvin K, Larsen MH, Aarestrup K, Willmore WG, Cooke SJ. N-acetylcysteine manipulation fails to elicit an increase in glutathione in a teleost model. FISH PHYSIOLOGY AND BIOCHEMISTRY 2018; 44:137-142. [PMID: 28861643 DOI: 10.1007/s10695-017-0419-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
Levels of oxidative stress can be affected by a range of compounds including toxins and pharmaceuticals. Antioxidants are important protective compounds which counteract the damaging effects of oxidative stress. Glutathione (GSH) is one of the main antioxidants for many organisms and can be synthesized from administered N-acetylcysteine (NAC). NAC has therefore often been used in a wide range of taxa to manipulate levels of GSH. Our objective was to validate this approach in a wild temperate teleost fish model, the brown trout (Salmo trutta). We used intracoelomic injections of NAC in saline and vegetable shortening, at two different concentrations (100 and 400 mg/kg), with the appropriate controls and shams, under controlled laboratory settings. We found that NAC failed to elicit an increase in GSH over three time periods and concluded that NAC is not an effective method to enhance GSH levels in teleost fish using the concentrations and vehicles tested here. We emphasize the importance of validation studies across all new species/taxa when possible and suggest that more investigation is required with regard to NAC manipulation in fish if this approach is to be used.
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Affiliation(s)
- Kim Birnie-Gauvin
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology and Institute of Environmental Science, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada.
- Department of Biology and Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada.
- DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater Fisheries Ecology, Technical University of Denmark, Vejlsøvej 39, 8600, Silkeborg, Denmark.
| | - Martin H Larsen
- DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater Fisheries Ecology, Technical University of Denmark, Vejlsøvej 39, 8600, Silkeborg, Denmark
- Danish Centre for Wild Salmon, Brusgårdsvej 15, 8960, Randers, Denmark
| | - Kim Aarestrup
- DTU AQUA, National Institute of Aquatic Resources, Section for Freshwater Fisheries Ecology, Technical University of Denmark, Vejlsøvej 39, 8600, Silkeborg, Denmark
| | - William G Willmore
- Department of Biology and Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada
| | - Steven J Cooke
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology and Institute of Environmental Science, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada
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104
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Sidorov AV. Neuromodulatory effects of hydrogen peroxide on central neurons in the feeding network of the mollusc Lymnaea stagnalis. J EVOL BIOCHEM PHYS+ 2018. [DOI: 10.1134/s0022093017060060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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105
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Yu X, Fan Z, Han Y, Zhang D, Xu L, Wang M, Yang Q, Li H, Zhou M, Zhang L, Sun G, Bai X, Li J, Wang H. Paeoniflorin reduces neomycin-induced ototoxicity in hair cells by suppression of reactive oxygen species generation and extracellularly regulated kinase signalization. Toxicol Lett 2017; 285:9-19. [PMID: 29292089 DOI: 10.1016/j.toxlet.2017.12.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 12/11/2017] [Accepted: 12/27/2017] [Indexed: 12/26/2022]
Abstract
The present study was designed to investigate the effect of paeoniflorin (PF) on neomycin-induced ototoxicity in hair cells (HCs). Here, we took advantage of C57BL/6 mice and cochlear explants culture to determine the role of PF in vivo and in vitro. We demonstrated that neomycin exposure induced severe hearing loss and HC damage, which was mediated by activated mitochondrial apoptosis pathway, promoted extracellular signal-regulated kinase (ERK) signaling as well as enhanced reactive oxygen species (ROS) generation in HCs. Interestingly, we found that PF pretreatment significantly alleviated neomycin-induced hearing loss, attenuated HC injury and decreased HC apoptosis caused by neomycin. Mechanistic studies revealed that PF could decrease cellular ROS levels, suppress the activation of ERK signaling and, subsequently, mitigate the imbalance of mitochondrial apoptotic pathway, thus protecting HCs from neomycin-induced apoptosis. This study indicates that PF may serve as an antioxidative and anti-apoptotic agent to prevent hearing loss caused by neomycin.
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Affiliation(s)
- Xiaoyu Yu
- Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China; Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China
| | - Zhaomin Fan
- Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China; Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China
| | - Yuechen Han
- Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Daogong Zhang
- Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Lei Xu
- Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Mingming Wang
- Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Qianqian Yang
- Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China
| | - Hongrui Li
- Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China
| | - Meijuan Zhou
- Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China
| | - Lili Zhang
- Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China
| | - Gaoying Sun
- Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China
| | - Xiaohui Bai
- Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China
| | - Jianfeng Li
- Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China.
| | - Haibo Wang
- Otolaryngology-Head and Neck Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China; Shandong Provincial Key Laboratory of Otology, Jinan, China; Shandong Institute of Otolaryngology, Jinan, China.
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106
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Identification and characterization of six peroxiredoxin transcripts from mud crab Scylla paramamosain: The first evidence of peroxiredoxin gene family in crustacean and their expression profiles under biotic and abiotic stresses. Mol Immunol 2017; 93:223-235. [PMID: 29220745 DOI: 10.1016/j.molimm.2017.11.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/23/2017] [Accepted: 11/28/2017] [Indexed: 01/18/2023]
Abstract
The peroxiredoxins (Prxs) define a novel and evolutionarily conserved superfamily of peroxidases able to protect cells from oxidative damage by catalyzing the reduction of a wide range of cellular peroxides. Prxs have been identified in prokaryotes as well as in eukaryotes, however, the composition and number of Prxs family members vary in different species. In this study, six Prxs were firstly identified from the mud crab Scylla paramamosain by RT-PCR and RACE methods. Six SpPrxs can be subdivided into three classes: (a) three typical 2-Cys enzymes denominated as Prx1/2, 3, 4, (b) two atypical 2-Cys enzymes known as Prx5-1 and Prx5-2, and (c) a 1-Cys isoform named Prx6. The evolutionarily conserved signatures of peroxiredoxin catalytic center were identified in all six SpPrxs. Phylogenetic analysis revealed that SpPrx3, SpPrx4, SpPrx5s and SpPrx6 were clearly classified into Prx3-6 subclasses, respectively. Although SpPrx1/2 could not be grouped into any known Prx subclasses, SpPrx1/2 clustered together with other arthropods Prx1 or unclassified Prx and could be classified into the typical 2-Cys class. The comparative and evolutionary analysis of the Prx gene family in invertebrates and vertebrates were also conducted for the first time. Tissue-specific expression analysis revealed that these six SpPrxs were expressed in different transcription patterns while the highest expression levels were almost all in the hepatopancreas. Quantitative RT-PCR analysis exhibited that the gene expression profiles of six SpPrxs were distinct when crabs suffered biotic and abiotic stresses including the exposures of Vibrio alginolyticus, poly (I:C), cadmium and hypoosmotic salinity, suggesting that the SpPrxs might play different roles in response to various stresses. The recombinant proteins including the SpPrx1/2, SpPrx4, SpPrx5-1 and SpPrx6 were purified and the peroxidase activity assays indicated that all these proteins can reduce H2O2 in a typical DTT-dependent manner. To our knowledge, this is the first study about the comprehensive characterization of Prx gene family in Scylla paramamosain and even in crustaceans. These results would broaden the current knowledge of the whole Prx family as well as be helpful to understand and clarify the evolutionary pattern of Prx family in invertebrate and vertebrate taxa.
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107
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da Conceição RR, de Souza JS, de Oliveira KC, de Barros Maciel RM, Romano MA, Romano RM, da Silva MRD, Chiamolera MI, Giannocco G. Anatomical specificity of the brain in the modulation of Neuroglobin and Cytoglobin genes after chronic bisphenol a exposure. Metab Brain Dis 2017; 32:1843-1851. [PMID: 28721559 DOI: 10.1007/s11011-017-0066-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 07/06/2017] [Indexed: 01/23/2023]
Abstract
The aim of this study was to investigate the influence of Bisphenol A (BPA) exposure on Neuroglobin (Ngb) and Cytoglobin (Cygb) as well as oxidative stress gene expression in the cerebellum, hippocampus, hypothalamus and cortex. Male Wistar rats were randomly divided into 3 groups: Control and two groups receiving 2 different daily BPA dosages, 5 or 25 mg/kg from postnatal day 50 (PND50) through PND90 and they were euthanized at PND105. In the cortex, we found an increase in Ngb gene expression and also in superoxide dismutase 1 and Catalase (Cat). In the cerebellum, we found an increase in Ngb and Cat, in the hypothalamus, there was a decrease in Cygb and an increase in glutathione peroxidase and Cat and in hypoxia-inducible factor 1 alpha (Hif1α) at the low dosage and a decrease in Hif1α at the high BPA dosage. Finally, in the hippocampus, we observed a decrease in Ngb and Cygb and an increase in Hif1α. In summary, BPA promotes the modulation of both Ngb and Cygb, but such changes occur by different mechanisms depending on the exposure dose and anatomical area.
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Affiliation(s)
- Rodrigo Rodrigues da Conceição
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Janaina Sena de Souza
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Kelen Carneiro de Oliveira
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Rui Monteiro de Barros Maciel
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Marco Aurélio Romano
- Department of Pharmacy, State University of Centro-Oeste, Curitiba, Parana, Brazil
| | - Renata Marino Romano
- Department of Pharmacy, State University of Centro-Oeste, Curitiba, Parana, Brazil
| | - Magnus Régios Dias da Silva
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Maria Izabel Chiamolera
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil
| | - Gisele Giannocco
- Laboratory of Molecular and Translational Endocrinology, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo (Unifesp/EPM), São Paulo, SP, Brazil.
- Department of Biological Sciences, Universidade Federal de São Paulo, Diadema, SP, Brazil.
- Laboratório de Endocriologia Molecular e Translacional, Departamento de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Pedro de Toledo, Vila Clementino, Sao Paulo, SP, 04039032, Brazil.
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108
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Zuluaga M, Gueguen V, Letourneur D, Pavon-Djavid G. Astaxanthin-antioxidant impact on excessive Reactive Oxygen Species generation induced by ischemia and reperfusion injury. Chem Biol Interact 2017; 279:145-158. [PMID: 29179950 DOI: 10.1016/j.cbi.2017.11.012] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 11/03/2017] [Accepted: 11/21/2017] [Indexed: 01/05/2023]
Abstract
Oxidative stress induced by Reactive Oxygen Species (ROS) was shown to be involved in the pathogenesis of chronic diseases such as cardiovascular pathologies. Particularly, oxidative stress has proved to mediate abnormal platelet function and dysfunctional endothelium-dependent vasodilatation representing a key factor in the progression of ischemic injuries. Antioxidants like carotenoids have been suggested to contribute in their prevention and treatment. Astaxanthin, a xanthophyll carotenoid produced naturally and synthetically, shows interesting antioxidant and anti-inflammatory properties. In vivo studies applying different models of induced ischemia and reperfusion (I/R) injury confirm astaxanthin's protective action after oral or intravenous administration. However, some studies have shown some limitations after oral administration such as low stability, bioavailability and bioefficacy, revealing a need for the implementation of new biomaterials to act as astaxanthin vehicles in vivo. Here, a brief overview of the chemical characteristics of astaxanthin, the carrier systems developed for overcoming its delivery drawbacks and the animal studies showing its potential effect to treat I/R injury are presented.
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Affiliation(s)
- M Zuluaga
- INSERM U1148, Laboratory for Vascular Translational Science, Cardiovascular Bioengineering, Paris 13 University, Sorbonne Paris Cite 99, Av. Jean-Baptiste Clément, 93430 Villetaneuse, France
| | - V Gueguen
- INSERM U1148, Laboratory for Vascular Translational Science, Cardiovascular Bioengineering, Paris 13 University, Sorbonne Paris Cite 99, Av. Jean-Baptiste Clément, 93430 Villetaneuse, France
| | - D Letourneur
- INSERM U1148, Laboratory for Vascular Translational Science, Cardiovascular Bioengineering, Paris 13 University, Sorbonne Paris Cite 99, Av. Jean-Baptiste Clément, 93430 Villetaneuse, France
| | - G Pavon-Djavid
- INSERM U1148, Laboratory for Vascular Translational Science, Cardiovascular Bioengineering, Paris 13 University, Sorbonne Paris Cite 99, Av. Jean-Baptiste Clément, 93430 Villetaneuse, France.
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Soderstrom K, Soliman E, Van Dross R. Cannabinoids Modulate Neuronal Activity and Cancer by CB1 and CB2 Receptor-Independent Mechanisms. Front Pharmacol 2017; 8:720. [PMID: 29066974 PMCID: PMC5641363 DOI: 10.3389/fphar.2017.00720] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 09/25/2017] [Indexed: 12/29/2022] Open
Abstract
Cannabinoids include the active constituents of Cannabis or are molecules that mimic the structure and/or function of these Cannabis-derived molecules. Cannabinoids produce many of their cellular and organ system effects by interacting with the well-characterized CB1 and CB2 receptors. However, it has become clear that not all effects of cannabinoid drugs are attributable to their interaction with CB1 and CB2 receptors. Evidence now demonstrates that cannabinoid agents produce effects by modulating activity of the entire array of cellular macromolecules targeted by other drug classes, including: other receptor types; ion channels; transporters; enzymes, and protein- and non-protein cellular structures. This review summarizes evidence for these interactions in the CNS and in cancer, and is organized according to the cellular targets involved. The CNS represents a well-studied area and cancer is emerging in terms of understanding mechanisms by which cannabinoids modulate their activity. Considering the CNS and cancer together allow identification of non-cannabinoid receptor targets that are shared and divergent in both systems. This comparative approach allows the identified targets to be compared and contrasted, suggesting potential new areas of investigation. It also provides insight into the diverse sources of efficacy employed by this interesting class of drugs. Obtaining a comprehensive understanding of the diverse mechanisms of cannabinoid action may lead to the design and development of therapeutic agents with greater efficacy and specificity for their cellular targets.
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Affiliation(s)
- Ken Soderstrom
- Department of Pharmacology and Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC, United States
| | - Eman Soliman
- Department of Pharmacology and Toxicology, Zagazig University, Zagazig, Egypt
| | - Rukiyah Van Dross
- Department of Pharmacology and Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC, United States
- Center for Health Disparities, East Carolina University, Greenville, NC, United States
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110
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Noviyana A, Nooryanto M, Andarini S. Effects of differences in the timing of ferrous sulfate supplementation on lipid peroxidation and activation of NF-κB in the placenta of pregnant rats. CLINICAL NUTRITION EXPERIMENTAL 2017. [DOI: 10.1016/j.yclnex.2017.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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111
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Wang S, He G, Chen M, Zuo T, Xu W, Liu X. The Role of Antioxidant Enzymes in the Ovaries. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4371714. [PMID: 29147461 PMCID: PMC5632900 DOI: 10.1155/2017/4371714] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 07/19/2017] [Indexed: 01/21/2023]
Abstract
Proper physiological function of the ovaries is very important for the entire female reproductive system and overall health. Reactive oxygen species (ROS) are generated as by-products during ovarian physiological metabolism, and antioxidants are indicated as factors that can maintain the balance between ROS production and clearance. A disturbance in this balance can induce pathological consequences in oocyte maturation, ovulation, fertilization, implantation, and embryo development, which can ultimately influence pregnancy outcomes. However, our understanding of the molecular and cellular mechanisms underlying these physiological and pathological processes is lacking. This article presents up-to-date findings regarding the effects of antioxidants on the ovaries. An abundance of evidence has confirmed the various significant roles of these antioxidants in the ovaries. Some animal models are discussed in this review to demonstrate the harmful consequences that result from mutation or depletion of antioxidant genes or genes related to antioxidant synthesis. Disruption of antioxidant systems may lead to pathological consequences in women. Antioxidant supplementation is indicated as a possible strategy for treating reproductive disease and infertility by controlling oxidative stress (OS). To confirm this, further investigations are required and more antioxidant therapy in humans has to been performed.
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Affiliation(s)
- Shan Wang
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- Joint Laboratory of Reproductive Medicine, Sichuan University-The Chinese University of Hong Kong (SCU-CUHK), West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Guolin He
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Meng Chen
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Tao Zuo
- Joint Laboratory of Reproductive Medicine, Sichuan University-The Chinese University of Hong Kong (SCU-CUHK), West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Wenming Xu
- Joint Laboratory of Reproductive Medicine, Sichuan University-The Chinese University of Hong Kong (SCU-CUHK), West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Xinghui Liu
- Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
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Nichols HB, Anderson C, White AJ, Milne GL, Sandler DP. Oxidative Stress and Breast Cancer Risk in Premenopausal Women. Epidemiology 2017; 28:667-674. [PMID: 28520645 PMCID: PMC5580344 DOI: 10.1097/ede.0000000000000685] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Detrimental effects of oxidative stress are widely recognized, but induction of apoptosis and senescence may also have benefits for cancer prevention. Recent studies suggest oxidative stress may be associated with lower breast cancer risk before menopause. METHODS We conducted a nested case-control study (N = 457 cases, 910 controls) within the NIEHS Sister Study cohort of 50,884 women. Premenopausal women ages 35-54 were eligible for selection. We matched controls 2:1 to cases on age and enrollment year and were breast cancer-free at the time of the corresponding case's diagnosis. Oxidative stress was measured by urinary F2-isoprostane and metabolite (15-F2t-isoprostane-M) concentrations. Odds ratios (OR) and 95% confidence intervals (CIs) were calculated with multivariable conditional logistic regression. RESULTS After multivariable adjustment for body mass index (BMI) and other potential confounders, the OR for breast cancer comparing the >90th (≥2.94 ng/mgCr) to <25th percentile (1.01 ng/mgCr) was 1.1 (CI: 0.65, 1.7) for F2-isoprostane and 0.70 (CI: 0.43, 1.1) for the metabolite. Higher metabolite concentrations were associated with lower breast cancer risk among women who were also premenopausal (353 cases, OR: 0.59, CI: 0.34, 1.0) or <46 years (82 cases, OR: 0.15, CI: 0.06, 0.42) at diagnosis. ORs for the metabolite and breast cancer were inverse among women with BMI 18.5-24.9 kg/m (OR: 0.47, CI: 0.18, 1.2, 208 cases) and >30 kg/m (OR: 0.71, CI: 0.30, 1.7, 107 cases), but not among women with BMI 25-29.9 kg/m (OR: 0.98, CI: 0.39, 2.5, 138 cases). CONCLUSIONS Together with other studies, our results support a possible inverse association between oxidative stress and premenopausal breast cancer risk.
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Affiliation(s)
- Hazel B. Nichols
- Department of Epidemiology, University of North Carolina Gillings School of Global Public Health
| | - Chelsea Anderson
- Department of Epidemiology, University of North Carolina Gillings School of Global Public Health
| | - Alexandra J. White
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC
| | | | - Dale P. Sandler
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC
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113
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Chen H, Li Y, Zhu Y, Wu L, Meng J, Lin N, Yang D, Li M, Ding W, Tong X, Su Q. Advanced glycation end products promote ChREBP expression and cell proliferation in liver cancer cells by increasing reactive oxygen species. Medicine (Baltimore) 2017; 96:e7456. [PMID: 28816938 PMCID: PMC5571675 DOI: 10.1097/md.0000000000007456] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The aim of the study was to elucidate the mechanism by which advanced glycation end products (AGEs) promote cell proliferation in liver cancer cells.We treated liver cancer HepG2 cells with 200 mg/L AGEs or bovine serum albumin (BSA) and assayed for cell viability, cell cycle, and apoptosis. We performed real-time PCR and Western blot analysis for RNA and protein levels of carbohydrate responsive element-binding protein (ChREBP) in AGEs- or BSA-treated HepG2 cells. We analyzed the level of reactive oxygen species (ROS) in HepG2 cells treated with AGEs or BSA.We found that increased S-phase cell percentage and decreased apoptosis contributed to AGEs-induced liver cancer cell proliferation. Real-time PCR and Western blot analysis showed that AGEs stimulated RNA and protein levels of ChREBP, a transcription factor promoting glycolysis and maintaining cell proliferation in liver cancer cells. Intriguingly, the level of ROS was higher in AGEs-treated liver cancer cells. Treating liver cancer cells with antioxidant N-acetyl cystein (NAC) partly blocked AGEs-induced ChREBP expression and cell proliferation.Our results suggest that the AGEs-ROS-ChREBP pathway plays a critical role in promoting ChREBP expression and liver cancer cell proliferation.
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Affiliation(s)
- Hanbei Chen
- Department of Endocrinology, Xinhua Hospital
| | - Yakui Li
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Yemin Zhu
- Department of Endocrinology, Xinhua Hospital
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Lifang Wu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Jian Meng
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Ning Lin
- Department of Endocrinology, Xinhua Hospital
| | - Dianqiang Yang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen, Fujian
| | - Minle Li
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - WenJin Ding
- Department of Gastroenterology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuemei Tong
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai
| | - Qing Su
- Department of Endocrinology, Xinhua Hospital
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114
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Lei K, Sun M, Du L, Zhang X, Yu H, Wang S, Hayat T, Alsaedi A. Sensitive determination of endogenous hydroxyl radical in live cell by a BODIPY based fluorescent probe. Talanta 2017; 170:314-321. [DOI: 10.1016/j.talanta.2017.04.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 03/27/2017] [Accepted: 04/01/2017] [Indexed: 12/22/2022]
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115
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Avila JG, Tsujimura T, Oberholzer J, Churchill T, Salehi P, Shapiro AMJ, Lakey JRT. Improvement of Pancreatic Islet Isolation Outcomes Using Glutamine Perfusion during Isolation Procedure. Cell Transplant 2017; 12:877-881. [DOI: 10.3727/000000003771000228] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
During procurement, isolation, and transplantation, islets are exposed to high levels of oxidative stress triggering a variety of signaling pathways that can ultimately lead to cell death. Glutamine is an important cellular fuel and an essential precursor for the antioxidant glutathione. The aim of this study was to examine the role of intraductal glutamine administration in facilitating recovery of isolated rat islets from pancreases subjected to a clinically relevant period of warm ischemia. Islets were isolated in Sprague-Dawley (SD) rats (n= 18 per group). Pancreata in groups 1 and 2 were procured immediately while groups 3 and 4 were subjected to 30-min warm ischemia. Groups 2 and 4 were treated intraductally with 5 mM glutamine prior to pancreatectomy. Exposure to 30-min warm ischemia significantly reduced islet yield [groups 1 & 2 (nonischemia): 503 ± 29 islets/rat vs. groups 3 & 4 (ischemia): 247 ± 26 islets/rat; p < 0.05]. Intraductal glutamine treatment significantly improved islet yield when pancreata were subjected to 30-min warm ischemia [144 ± 16 islets/rat without glutamine (group 3) vs. 343 ± 36 islets/rat with glutamine (group 4), p < 0.05]. Glutamine also significantly improved islet viability (values were 50 ± 4% in group 4 vs. 27 ± 3% in group 3, p < 0.05). Similarly, glutathione (reduced) levels were significantly elevated in both glutamine-treated groups; however, this increase was greatest in tissues exposed to ischemia (2.76 ± 0.04 nmol/mg protein in group 4 vs. 1.66 ± 0.04 nmol/mg protein in group 3, p < 0.05). Intraductal glutamine administration considerably improves the islet yield, viability, and augments endogenous glutathione levels in pancreata procured after a clinically relevant period of ischemia. Intraductal administration of glutamine at the time of digestive enzyme delivery into the harvested pancreas may represent a simple yet effective tool to improve islet yields in clinical isolations.
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Affiliation(s)
- J. G. Avila
- Surgical-Medical Research Institute, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
- Department of Surgery, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
| | - T. Tsujimura
- Surgical-Medical Research Institute, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
- Department of Surgery, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
| | - J. Oberholzer
- Department of Surgery, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
| | - T. Churchill
- Surgical-Medical Research Institute, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
| | - P. Salehi
- Surgical-Medical Research Institute, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
| | - A. M. James Shapiro
- Surgical-Medical Research Institute, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
- Department of Surgery, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
| | - J. R. T. Lakey
- Surgical-Medical Research Institute, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
- Department of Surgery, University of Alberta, 1074 Dentistry/Pharmacy Centre, Edmonton, Canada T6G 2N8
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116
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Zhang W, Wang X, Li P, Xiao H, Zhang W, Wang H, Tang B. Illuminating Superoxide Anion and pH Enhancements in Apoptosis of Breast Cancer Cells Induced by Mitochondrial Hyperfusion Using a New Two-Photon Fluorescence Probe. Anal Chem 2017; 89:6840-6845. [DOI: 10.1021/acs.analchem.7b01290] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Wen Zhang
- College of Chemistry, Chemical Engineering
and Materials Science, Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Institutes of
Biomedical Sciences, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Xin Wang
- College of Chemistry, Chemical Engineering
and Materials Science, Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Institutes of
Biomedical Sciences, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Ping Li
- College of Chemistry, Chemical Engineering
and Materials Science, Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Institutes of
Biomedical Sciences, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Haibin Xiao
- College of Chemistry, Chemical Engineering
and Materials Science, Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Institutes of
Biomedical Sciences, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Wei Zhang
- College of Chemistry, Chemical Engineering
and Materials Science, Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Institutes of
Biomedical Sciences, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Hui Wang
- College of Chemistry, Chemical Engineering
and Materials Science, Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Institutes of
Biomedical Sciences, Shandong Normal University, Jinan 250014, People’s Republic of China
| | - Bo Tang
- College of Chemistry, Chemical Engineering
and Materials Science, Collaborative Innovation Center of Functionalized
Probes for Chemical Imaging in Universities of Shandong, Key Laboratory
of Molecular and Nano Probes, Ministry of Education, Institutes of
Biomedical Sciences, Shandong Normal University, Jinan 250014, People’s Republic of China
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117
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Bettio LEB, Rajendran L, Gil-Mohapel J. The effects of aging in the hippocampus and cognitive decline. Neurosci Biobehav Rev 2017; 79:66-86. [PMID: 28476525 DOI: 10.1016/j.neubiorev.2017.04.030] [Citation(s) in RCA: 325] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/15/2017] [Accepted: 04/10/2017] [Indexed: 02/06/2023]
Abstract
Aging is a natural process that is associated with cognitive decline as well as functional and social impairments. One structure of particular interest when considering aging and cognitive decline is the hippocampus, a brain region known to play an important role in learning and memory consolidation as well as in affective behaviours and mood regulation, and where both functional and structural plasticity (e.g., neurogenesis) occur well into adulthood. Neurobiological alterations seen in the aging hippocampus including increased oxidative stress and neuroinflammation, altered intracellular signalling and gene expression, as well as reduced neurogenesis and synaptic plasticity, are thought to be associated with age-related cognitive decline. Non-invasive strategies such as caloric restriction, physical exercise, and environmental enrichment have been shown to counteract many of the age-induced alterations in hippocampal signalling, structure, and function. Thus, such approaches may have therapeutic value in counteracting the deleterious effects of aging and protecting the brain against age-associated neurodegenerative processes.
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Affiliation(s)
- Luis E B Bettio
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Luckshi Rajendran
- Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Joana Gil-Mohapel
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada; UBC Island Medical program, University of Victoria, Victoria, BC, Canada.
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118
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Wang X, Liu J, Drummond CA, Shapiro JI. Sodium potassium adenosine triphosphatase (Na/K-ATPase) as a therapeutic target for uremic cardiomyopathy. Expert Opin Ther Targets 2017; 21:531-541. [PMID: 28338377 PMCID: PMC5590225 DOI: 10.1080/14728222.2017.1311864] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 03/23/2017] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Clinically, patients with significant reductions in renal function present with cardiovascular dysfunction typically termed, uremic cardiomyopathy. It is a progressive series of cardiac pathophysiological changes, including left ventricular diastolic dysfunction and hypertrophy (LVH) which sometimes progress to left ventricular dilation (LVD) and systolic dysfunction in the setting of chronic kidney disease (CKD). Uremic cardiomyopathy is almost ubiquitous in patients afflicted with end stage renal disease (ESRD). Areas covered: This article reviews recent epidemiology, pathophysiology of uremic cardiomyopathy and provide a board overview of Na/K-ATPase research with detailed discussion on the mechanisms of Na/K-ATPase/Src/ROS amplification loop. We also present clinical and preclinical evidences as well as molecular mechanism of this amplification loop in the development of uremic cardiomyopathy. A potential therapeutic peptide that targets on this loop is discussed. Expert opinion: Current clinical treatment for uremic cardiomyopathy remains disappointing. Targeting the ROS amplification loop mediated by the Na/K-ATPase signaling function may provide a novel therapeutic target for uremic cardiomyopathy and related diseases. Additional studies of Na/K-ATPase and other strategies that regulate this loop will lead to new therapeutics.
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Affiliation(s)
- Xiaoliang Wang
- a Joan C Edwards School of Medicine at Marshall University , Huntington , WV , United States
- b University of Toledo College of Medicine and Life Sciences , Toledo , OH , United States
| | - Jiang Liu
- a Joan C Edwards School of Medicine at Marshall University , Huntington , WV , United States
| | - Christopher A Drummond
- b University of Toledo College of Medicine and Life Sciences , Toledo , OH , United States
| | - Joseph I Shapiro
- a Joan C Edwards School of Medicine at Marshall University , Huntington , WV , United States
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119
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Skeletal Muscle Nucleo-Mitochondrial Crosstalk in Obesity and Type 2 Diabetes. Int J Mol Sci 2017; 18:ijms18040831. [PMID: 28420087 PMCID: PMC5412415 DOI: 10.3390/ijms18040831] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/01/2017] [Accepted: 04/08/2017] [Indexed: 12/15/2022] Open
Abstract
Skeletal muscle mitochondrial dysfunction, evidenced by incomplete beta oxidation and accumulation of fatty acid intermediates in the form of long and medium chain acylcarnitines, may contribute to ectopic lipid deposition and insulin resistance during high fat diet (HFD)-induced obesity. The present review discusses the roles of anterograde and retrograde communication in nucleo-mitochondrial crosstalk that determines skeletal muscle mitochondrial adaptations, specifically alterations in mitochondrial number and function in relation to obesity and insulin resistance. Special emphasis is placed on the effects of high fat diet (HFD) feeding on expression of nuclear-encoded mitochondrial genes (NEMGs) nuclear receptor factor 1 (NRF-1) and 2 (NRF-2) and peroxisome proliferator receptor gamma coactivator 1 alpha (PGC-1α) in the onset and progression of insulin resistance during obesity and how HFD-induced alterations in NEMG expression affect skeletal muscle mitochondrial adaptations in relation to beta oxidation of fatty acids. Finally, the potential ability of acylcarnitines or fatty acid intermediates resulting from mitochondrial beta oxidation to act as retrograde signals in nucleo-mitochondrial crosstalk is reviewed and discussed.
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120
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Koseska A, Bastiaens PI. Cell signaling as a cognitive process. EMBO J 2017; 36:568-582. [PMID: 28137748 PMCID: PMC5331751 DOI: 10.15252/embj.201695383] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/13/2016] [Accepted: 12/20/2016] [Indexed: 12/17/2022] Open
Abstract
Cellular identity as defined through morphology and function emerges from intracellular signaling networks that communicate between cells. Based on recursive interactions within and among these intracellular networks, dynamical solutions in terms of biochemical behavior are generated that can differ from those in isolated cells. In this way, cellular heterogeneity in tissues can be established, implying that cell identity is not intrinsically predetermined by the genetic code but is rather dynamically maintained in a cognitive manner. We address how to experimentally measure the flow of information in intracellular biochemical networks and demonstrate that even simple causality motifs can give rise to rich, context-dependent dynamic behavior. The concept how intercellular communication can result in novel dynamical solutions is applied to provide a contextual perspective on cell differentiation and tumorigenesis.
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Affiliation(s)
- Aneta Koseska
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
| | - Philippe Ih Bastiaens
- Department of Systemic Cell Biology, Max Planck Institute of Molecular Physiology, Dortmund, Germany
- Faculty of Chemistry and Chemical Biology, TU Dortmund, Dortmund, Germany
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121
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The Architecture of Thiol Antioxidant Systems among Invertebrate Parasites. Molecules 2017; 22:molecules22020259. [PMID: 28208651 PMCID: PMC6155587 DOI: 10.3390/molecules22020259] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 02/03/2017] [Indexed: 01/14/2023] Open
Abstract
The use of oxygen as the final electron acceptor in aerobic organisms results in an improvement in the energy metabolism. However, as a byproduct of the aerobic metabolism, reactive oxygen species are produced, leaving to the potential risk of an oxidative stress. To contend with such harmful compounds, living organisms have evolved antioxidant strategies. In this sense, the thiol-dependent antioxidant defense systems play a central role. In all cases, cysteine constitutes the major building block on which such systems are constructed, being present in redox substrates such as glutathione, thioredoxin, and trypanothione, as well as at the catalytic site of a variety of reductases and peroxidases. In some cases, the related selenocysteine was incorporated at selected proteins. In invertebrate parasites, antioxidant systems have evolved in a diversity of both substrates and enzymes, representing a potential area in the design of anti-parasite strategies. The present review focus on the organization of the thiol-based antioxidant systems in invertebrate parasites. Differences between these taxa and its final mammal host is stressed. An understanding of the antioxidant defense mechanisms in this kind of parasites, as well as their interactions with the specific host is crucial in the design of drugs targeting these organisms.
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122
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Brennan MS, Matos MF, Richter KE, Li B, Scannevin RH. The NRF2 transcriptional target, OSGIN1, contributes to monomethyl fumarate-mediated cytoprotection in human astrocytes. Sci Rep 2017; 7:42054. [PMID: 28181536 PMCID: PMC5299414 DOI: 10.1038/srep42054] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 01/04/2017] [Indexed: 01/10/2023] Open
Abstract
Dimethyl fumarate (DMF) is indicated for the treatment of relapsing multiple sclerosis and may exert therapeutic effects via activation of the nuclear factor (erythroid-derived 2)-like 2 (NRF2) pathway. Following oral DMF administration, central nervous system (CNS) tissue is predominantly exposed to monomethyl fumarate (MMF), the bioactive metabolite of DMF, which can stabilize NRF2 and induce antioxidant gene expression; however, the detailed NRF2-dependent mechanisms modulated by MMF that lead to cytoprotection are unknown. Our data identify a mechanism for MMF-mediated cytoprotection in human astrocytes that functions in an OSGIN1-dependent manner, specifically via upregulation of the OSGIN1-61 kDa isoform. NRF2-dependent OSGIN1 expression induced P53 nuclear translocation following MMF administration, leading to cell-cycle inhibition and cell protection against oxidative challenge. This study provides mechanistic insight into MMF-mediated cytoprotection via NRF2, OSGIN1, and P53 in human CNS-derived cells and contributes to our understanding of how DMF may act clinically to ameliorate pathological processes in neurodegenerative disease.
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Affiliation(s)
- Melanie S Brennan
- Neurology Research, Biogen Inc., Cambridge, MA, 02142, USA.,Boston University School of Medicine, Boston, MA 02118, USA
| | - Maria F Matos
- Neurology Research, Biogen Inc., Cambridge, MA, 02142, USA
| | - Karl E Richter
- Neurology Research, Biogen Inc., Cambridge, MA, 02142, USA
| | - Bing Li
- Neurology Research, Biogen Inc., Cambridge, MA, 02142, USA
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Abstract
Peroxiredoxins (Prxs) constitute a major family of peroxidases, with mammalian cells expressing six Prx isoforms (PrxI to PrxVI). Cells produce hydrogen peroxide (H2O2) at various intracellular locations where it can serve as a signaling molecule. Given that Prxs are abundant and possess a structure that renders the cysteine (Cys) residue at the active site highly sensitive to oxidation by H2O2, the signaling function of this oxidant requires extensive and highly localized regulation. Recent findings on the reversible regulation of PrxI through phosphorylation at the centrosome and on the hyperoxidation of the Cys at the active site of PrxIII in mitochondria are described in this review as examples of such local regulation of H2O2 signaling. Moreover, their high affinity for and sensitivity to oxidation by H2O2 confer on Prxs the ability to serve as sensors and transducers of H2O2 signaling through transfer of their oxidation state to bound effector proteins.
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Affiliation(s)
- Sue Goo Rhee
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul 120-752, Korea;
| | - In Sup Kil
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul 120-752, Korea;
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124
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Dunnill C, Patton T, Brennan J, Barrett J, Dryden M, Cooke J, Leaper D, Georgopoulos NT. Reactive oxygen species (ROS) and wound healing: the functional role of ROS and emerging ROS-modulating technologies for augmentation of the healing process. Int Wound J 2017; 14:89-96. [PMID: 26688157 PMCID: PMC7950185 DOI: 10.1111/iwj.12557] [Citation(s) in RCA: 595] [Impact Index Per Article: 85.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 11/17/2015] [Accepted: 11/18/2015] [Indexed: 12/15/2022] Open
Abstract
Reactive oxygen species (ROS) play a pivotal role in the orchestration of the normal wound-healing response. They act as secondary messengers to many immunocytes and non-lymphoid cells, which are involved in the repair process, and appear to be important in coordinating the recruitment of lymphoid cells to the wound site and effective tissue repair. ROS also possess the ability to regulate the formation of blood vessels (angiogenesis) at the wound site and the optimal perfusion of blood into the wound-healing area. ROS act in the host's defence through phagocytes that induce an ROS burst onto the pathogens present in wounds, leading to their destruction, and during this period, excess ROS leakage into the surrounding environment has further bacteriostatic effects. In light of these important roles of ROS in wound healing and the continued quest for therapeutic strategies to treat wounds in general and chronic wounds, such as diabetic foot ulcers, venous and arterial leg ulcers and pressure ulcers in particular, the manipulation of ROS represents a promising avenue for improving wound-healing responses when they are stalled. This article presents a review of the evidence supporting the critical role of ROS in wound healing and infection control at the wound site, and some of the new emerging concepts associated with ROS modulation and its potential in improving wound healing are discussed.
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Affiliation(s)
- Christopher Dunnill
- Institute of Skin Integrity and Infection PreventionUniversity of HuddersfieldHuddersfieldUK
- Department of Biological Sciences, School of Applied SciencesUniversity of HuddersfieldHuddersfieldUK
| | | | | | | | - Matthew Dryden
- Department of MicrobiologyHampshire Hospitals NHS Foundation TrustWinchesterUK
- Rare and Imported Pathogens Laboratory (RIPL)Public Health EnglandPorton DownUK
| | - Jonathan Cooke
- Centre for Infection Prevention and Management, Division of MedicineImperial CollegeLondonUK
- Manchester Pharmacy SchoolFaculty of Medical and Human Sciences, University of ManchesterManchesterUK
| | - David Leaper
- Institute of Skin Integrity and Infection PreventionUniversity of HuddersfieldHuddersfieldUK
| | - Nikolaos T Georgopoulos
- Institute of Skin Integrity and Infection PreventionUniversity of HuddersfieldHuddersfieldUK
- Department of Biological Sciences, School of Applied SciencesUniversity of HuddersfieldHuddersfieldUK
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125
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Basu S. The enigma ofin vivooxidative stress assessment: isoprostanes as an emerging target. SCANDINAVIAN JOURNAL OF FOOD & NUTRITION 2016. [PMCID: PMC2607004 DOI: 10.1080/17482970701411642] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Oxidative stress is believed to be one of the major factors behind several acute and chronic diseases, and may also be associated with ageing. Excess formation of free radicals in miscellaneous body environment may originate from endogenous response to cell injury, but also from exposure to a number of exogenous toxins. When the antioxidant defence system is overwhelmed, this leads to cell damage. However, the measurement of free radicals or their endproducts is tricky, since these compounds are reactive and short lived, and have diverse characteristics. Specific evidence for the involvement of free radicals in pathological situations has been difficult to obtain, partly owing to shortcomings in earlier described methods for the measurement of oxidative stress. Isoprostanes, which are prostaglandin-like bioactive compounds synthesized in vivo from oxidation of arachidonic acid, independently of cyclooxygenases, are involved in many human diseases, and their measurement therefore offers a way to assess oxidative stress. Elevated levels of F2-isoprostanes have also been seen in the normal human pregnancy, but their physiological role has not yet been defined. Large amounts of bioactive F2-isoprostanes are excreted in the urine in normal basal situations, with a wide interindividual variation. Their exact role in the regulation of normal physiological functions, however, needs to be explored further. Current understanding suggests that measurement of F2-isoprostanes in body fluids provides a reliable analytical tool to study oxidative stress-related diseases and experimental inflammatory conditions, and also in the evaluation of various dietary antioxidants, as well as drugs with radical-scavenging properties. However, assessment of isoprostanes in plasma or urine does not necessarily reflect any specific tissue damage, nor does it provide information on the oxidation of lipids other than arachidonic acid.
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Affiliation(s)
- Samar Basu
- Clinical Nutrition and Metabolism, Department of Public Health and Caring Sciences, Faculty of MedicineUppsala UniversityUppsalaSweden
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Kim J, Lee GR, Kim H, Jo YJ, Hong SE, Lee J, Lee HI, Jang YS, Oh SH, Lee HJ, Lee JS, Jeong W. Effective killing of cancer cells and regression of tumor growth by K27 targeting sulfiredoxin. Free Radic Biol Med 2016; 101:384-392. [PMID: 27825965 DOI: 10.1016/j.freeradbiomed.2016.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 11/01/2016] [Accepted: 11/02/2016] [Indexed: 01/23/2023]
Abstract
Cancer cells have been suggested to be more susceptible to oxidative damages and highly dependent on antioxidant capacity in comparison with normal cells, and thus targeting antioxidant enzymes has been a strategy for effective cancer treatment. Sulfiredoxin (Srx) is an enzyme that catalyzes the reduction of sulfinylated peroxiredoxins and thereby reactivates them. In this study we developed a Srx inhibitor, K27 (N-[7-chloro-2-(4-fluorophenyl)-4-quinazolinyl]-N-(2-phenylethyl)-β-alanine), and showed that it induces the accumulation of sulfinylated peroxiredoxins and oxidative stress, which leads to mitochondrial damage and apoptotic death of cancer cells. The effects of K27 were significantly reversed by ectopic expression of Srx or antioxidant N-acetyl cysteine. In addition, K27 led to preferential death of tumorigenic cells over non-tumorigenic cells, and suppressed the growth of xenograft tumor without acute toxicity. Our results suggest that targeting Srx might be an effective therapeutic strategy for cancer treatment through redox-mediated cell death.
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Affiliation(s)
- Jiwon Kim
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Gong-Rak Lee
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Hojin Kim
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - You-Jin Jo
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Seong-Eun Hong
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Jiae Lee
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Hye In Lee
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Yeong-Su Jang
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, South Korea
| | - Seung-Hyun Oh
- Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 406-840, South Korea
| | - Hwa Jeong Lee
- College of Pharmacy, Ewha Womans University, Seoul 120-750, South Korea
| | - Ju-Seog Lee
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Woojin Jeong
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea.
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Fu J, Hou Y, Xue P, Wang H, Xu Y, Qu W, Zhang Q, Pi J. Nrf2 in Type 2 diabetes and diabetic complications: Yin and Yang. CURRENT OPINION IN TOXICOLOGY 2016. [DOI: 10.1016/j.cotox.2016.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Abdallah HM, El-Bassossy HM, Mohamed GA, El-halawany AM, Alshali KZ, Banjar ZM. Phenolics from Garcinia mangostana alleviate exaggerated vasoconstriction in metabolic syndrome through direct vasodilatation and nitric oxide generation. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:359. [PMID: 27618982 PMCID: PMC5020522 DOI: 10.1186/s12906-016-1340-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 09/05/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Exaggerated vasoconstriction plays a very important role in the hypertension, a major component of metabolic syndrome (MetS). In the current work, the potential protective effect of methanol extract of fruit hulls of Garcinia mangostana L. on the exaggerated vasoconstriction in MetS has been investigated. In addition, the bioactive fraction and compounds as well as the possible mechanism of action have been illustrated. METHODS The effect of methanol extract of G. mangostana (GMT) fruit hulls on the vascular reactivity of aorta isolated from animals with MetS was investigated through bioassay-guided fractionation procedures. GMT was partitioned with chloroform (I) and the remaining mother liquor was fractionated on a Diaion HP-20 with H2O, 50 and 100 % methanol to give fractions II, III, and IV, respectively. The effect of total extract (GMT), bioactive fraction and the bioactive compounds on the vasoconstriction were examined in aortae isolated from animals with MetS by incubation for 30 min before exposing aortae to cumulative concentrations of phenylephrine (PE). The direct relaxant effect was also examined by adding cumulative concentrations of the bioactive fraction and its bioactive compounds to PE precontracted vessels. In addition, aortic nitric oxide (NO) and reactive oxygen species (ROS) production was investigated. RESULTS Bioassay-guided fractionation of GMT revealed isolation of garcimangosone D (1), aromadendrin-8-C-β-D-glucopyranoside (2), 2,4,3'-trihydroxy benzophenone-6-O-β-D-glucopyranoside (3), maclurin-6-O-β-D-glucopyranoside (rhodanthenone) (4), epicatechin (5), and 2,3',4,5',6-pentahydroxy benzophenone (6). Only compounds 2, 4, and 5 significantly alleviated the exaggerated vasoconstriction of MetS aortae and in the same time showed significant vasodilation of PE pre-contracted aortae. To further illustrate the mechanism of action, the observed vasodilation was completely blocked by the nitric oxide (NO) synthase inhibitor, Nω-nitro-L-arginine methyl ester hydrochloride and inhibited by guanylate cyclase inhibitor, methylene blue. However, vasodilation was not affected by the potassium channel blocker, tetraethylammonium or the cyclooxygenase inhibitor, indomethacin. In addition, compounds 2, 4, and 5 stimulated NO generation from isolated aortae to levels comparable with acetylcholine. Furthermore, 4 and 5 inhibited reactive oxygen species generation in MetS aortae. CONCLUSION The phenolic compounds 2, 4, and 5 ameliorated the exaggerated vasoconstriction in MetS aortae through vasodilatation-NO generation mechanism.
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Trinity JD, Broxterman RM, Richardson RS. Regulation of exercise blood flow: Role of free radicals. Free Radic Biol Med 2016; 98:90-102. [PMID: 26876648 PMCID: PMC4975999 DOI: 10.1016/j.freeradbiomed.2016.01.017] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/07/2016] [Accepted: 01/21/2016] [Indexed: 02/07/2023]
Abstract
During exercise, oxygen and nutrient rich blood must be delivered to the active skeletal muscle, heart, skin, and brain through the complex and highly regulated integration of central and peripheral hemodynamic factors. Indeed, even minor alterations in blood flow to these organs have profound consequences on exercise capacity by modifying the development of fatigue. Therefore, the fine-tuning of blood flow is critical for optimal physical performance. At the level of the peripheral circulation, blood flow is regulated by a balance between the mechanisms responsible for vasodilation and vasoconstriction. Once thought of as toxic by-products of in vivo chemistry, free radicals are now recognized as important signaling molecules that exert potent vasoactive responses that are dependent upon the underlying balance between oxidation-reduction reactions or redox balance. Under normal healthy conditions with low levels of oxidative stress, free radicals promote vasodilation, which is attenuated with exogenous antioxidant administration. Conversely, with advancing age and disease where background oxidative stress is elevated, an exercise-induced increase in free radicals can further shift the redox balance to a pro-oxidant state, impairing vasodilation and attenuating blood flow. Under these conditions, exogenous antioxidants improve vasodilatory capacity and augment blood flow by restoring an "optimal" redox balance. Interestingly, while the active skeletal muscle, heart, skin, and brain all have unique functions during exercise, the mechanisms by which free radicals contribute to the regulation of blood flow is remarkably preserved across each of these varied target organs.
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Affiliation(s)
- Joel D Trinity
- Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City, UT, USA; Department of Internal Medicine, Division of Geriatric, University of Utah, Salt Lake City, UT, USA.
| | - Ryan M Broxterman
- Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City, UT, USA; Department of Internal Medicine, Division of Geriatric, University of Utah, Salt Lake City, UT, USA
| | - Russell S Richardson
- Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City, UT, USA; Department of Internal Medicine, Division of Geriatric, University of Utah, Salt Lake City, UT, USA; Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, UT, USA
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Fukui K. Reactive oxygen species induce neurite degeneration before induction of cell death. J Clin Biochem Nutr 2016; 59:155-159. [PMID: 27895381 PMCID: PMC5110939 DOI: 10.3164/jcbn.16-34] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 04/25/2016] [Indexed: 01/04/2023] Open
Abstract
Reactive oxygen species (ROS) induce neuronal cell death in a time- and concentration-dependent manner. Treatment of cultured cells with a low concentration of hydrogen peroxide induces neurite degeneration, but not cell death. Neurites (axons and dendrites) are vulnerable to ROS. Neurite degeneration (shrinkage, accumulation, and fragmentation) has been found in neurodegenerative disorders, such as Alzheimer’s disease, Parkinson’s disease, and Huntington’s disease. However, the mechanism of ROS-related neurite degeneration is not fully understood. Many studies have demonstrated the relationship between mitochondrial dysfunction and microtubule destabilization. These dysfunctions are deeply related to changes in calcium homeostasis and ROS production in neurites. Treatment with antioxidant substances, such as vitamin E, prevents neurite degeneration in cultured cells. This review describes the possibility that ROS induces neurite degeneration before the induction of cell death.
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Affiliation(s)
- Koji Fukui
- Molecular Cell Biology Laboratory, Department of Bioscience and Engineering, College of Systems Engineering and Sciences, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
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McVey KA, Snapp IB, Johnson MB, Negga R, Pressley AS, Fitsanakis VA. Exposure of C. elegans eggs to a glyphosate-containing herbicide leads to abnormal neuronal morphology. Neurotoxicol Teratol 2016; 55:23-31. [PMID: 27019975 PMCID: PMC4884470 DOI: 10.1016/j.ntt.2016.03.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 03/20/2016] [Accepted: 03/20/2016] [Indexed: 12/21/2022]
Abstract
Recent data demonstrate that chronic exposure of Caenorhabditis elegans (C. elegans) to a high-use glyphosate-containing herbicide, Touchdown (TD), potentially damages the adult nervous system. It is unknown, however, whether unhatched worms exposed to TD during the egg stage show abnormal neurodevelopment post-hatching. Therefore, we investigated whether early treatment with TD leads to aberrant neuronal or neurite development in C. elegans. Studies were completed in three different worm strains with green fluorescent protein (GFP)-tagged neurons to facilitate visual neuronal assessment. Initially, eggs from C. elegans with all neurons tagged with GFP were chronically exposed to TD. Visual inspection suggested decreased neurite projections associated with ventral nerve cord neurons. Data analysis showed a statistically significant decrease in overall green pixel numbers at the fourth larval (L4) stage (*p<0.05). We further investigated whether specific neuronal populations were preferentially vulnerable to TD by treating eggs from worms that had all dopaminergic (DAergic) or γ-aminobutyric acid (GABAergic) neurons tagged with GFP. As before, green pixel number associated with these discrete neuronal populations was analyzed at multiple larval stages. Data analysis indicated statistically significant decreases in pixel number associated with DAergic, but not GABAergic, neurons (***p<0.001) at all larval stages. Finally, statistically significant decreases (at the first larval stage, L1) or increases (at the fourth larval stage, L4) in superoxide levels, a developmental signaling molecule, were detected (*p<0.05). These data suggest that early exposure to TD may impair neuronal development, perhaps through superoxide perturbation. Since toxic insults during development may late render individuals more vulnerable to neurodegenerative diseases in adulthood, these studies provide some of the first evidence in this model organism that early exposure to TD may adversely affect the developing nervous system.
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Affiliation(s)
- Kenneth A McVey
- King University, Department of Biology, 1350 King College Road, Bristol, TN 37620, USA; Liberty University College of Osteopathic Medicine, 306 Liberty View Lane, Lynchburg, VA 24502, USA.
| | - Isaac B Snapp
- King University, Department of Biology, 1350 King College Road, Bristol, TN 37620, USA; Medical University of South Carolina, Physician Assistant Studies, 151B Rutledge Avenue, Charleston, SC 29425, USA.
| | - Megan B Johnson
- King University, Department of Biology, 1350 King College Road, Bristol, TN 37620, USA; Lincoln Memorial University, Debusk College of Osteopathic Medicine, 6965 Cumberland Gap Parkway, Harrogate, TN 37752, USA.
| | - Rekek Negga
- King University, Department of Biology, 1350 King College Road, Bristol, TN 37620, USA; The University of Tennessee Institute of Agriculture, Department of Animal Science, 366 Brehm Animal Science Building, 2506 River Drive, Knoxville, TN 37996, USA.
| | - Aireal S Pressley
- King University, Department of Biology, 1350 King College Road, Bristol, TN 37620, USA.
| | - Vanessa A Fitsanakis
- King University, Department of Biology, 1350 King College Road, Bristol, TN 37620, USA.
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Gibhardt CS, Zimmermann KM, Zhang X, Belousov VV, Bogeski I. Imaging calcium and redox signals using genetically encoded fluorescent indicators. Cell Calcium 2016; 60:55-64. [PMID: 27142890 DOI: 10.1016/j.ceca.2016.04.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 04/23/2016] [Accepted: 04/25/2016] [Indexed: 12/30/2022]
Abstract
Calcium and redox signals are presently established as essential regulators of many cellular processes. Nevertheless, we are still far from fully understanding the physiological and pathological importance of these universal second messengers. It is becoming increasingly apparent that many cellular functions are not regulated by global changes in the abundance of Ca(2+) ions and/or reactive oxygen and nitrogen species (ROS and RNS), but by the formation of transient local micro-domains or by signaling limited to a particular cellular compartment. Therefore, it is essential to identify and quantify Ca(2+) and redox signals in single cells with a high spatial and temporal resolution. The best tools for this purpose are the genetically encoded fluorescent indicators (GEFI). These protein sensors can be targeted into different cellular compartments, feature different colors, can be used to establish transgenic animal models, and are relatively inert to the cellular environment. Based on the chemical properties of Ca(2+) and ROS/RNS, currently more sensors exist for the detection of Ca(2+)- than for redox signals. Here, we shortly describe the most popular genetically encoded fluorescent Ca(2+) and redox indicators, discuss advantages and disadvantages based on our experience, show examples of different applications, and thus provide a brief guide that will help scientists choose the right combination of Ca(2+) and redox sensors to answer specific scientific questions.
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Affiliation(s)
- Christine S Gibhardt
- Department of Biophysics, CIPMM, School of Medicine, Saarland University, Homburg, Germany
| | - Katharina M Zimmermann
- Department of Biophysics, CIPMM, School of Medicine, Saarland University, Homburg, Germany
| | - Xin Zhang
- Department of Biophysics, CIPMM, School of Medicine, Saarland University, Homburg, Germany
| | | | - Ivan Bogeski
- Department of Biophysics, CIPMM, School of Medicine, Saarland University, Homburg, Germany.
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Kanta J. The Role of Hydrogen Peroxide and Other Reactive Oxygen Species in Wound Healing. ACTA MEDICA (HRADEC KRÁLOVÉ) 2016; 54:97-101. [DOI: 10.14712/18059694.2016.28] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Wound healing is a complex physiological process important for tissue homeostasis. An acute injury initiates massive cell migration, proliferation and differentiation, synthesis of extracellular matrix components, scar formation and remodelling. Blood flow and tissue oxygenation are parts of the complex regulation of healing. Higher organisms utilize molecular oxygen as a terminal oxidant. This way of gaining energy for vital processes such as healing leads to the production of a number of oxygen compounds that may have a defensive or informatory role. They may be harmful when present in high concentrations. Both the lack and the excess of reactive oxygen species may influence healing negatively.
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Duan J, Wei G, Guo C, Cui J, Yan J, Yin Y, Guan Y, Weng Y, Zhu Y, Wu X, Wang Y, Xi M, Wen A. Aralia taibaiensis Protects Cardiac Myocytes against High Glucose-Induced Oxidative Stress and Apoptosis. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2016; 43:1159-75. [PMID: 26446201 DOI: 10.1142/s0192415x15500664] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Patients with type 2 diabetes have increased cardiovascular disease risk compared with those without diabetes. Hyperglycemia can induce reactive oxygen species (ROS) generation, which contributes to the development of diabetic cardiomyopathy. Our previous study has demonstrated that the total saponins of Aralia taibaiensis (sAT), a frequently-used antidiabetic medicine in traditional Chinese medicine (TCM), can scavenge free radicals in vitro and have good anti-oxidant ability on lipid peroxidation of rat liver microsomes. This work was designed to investigate whether sAT could protect the heart while it was used in the treatment of diabetes. Oxidative stress was induced in H9c2 cells by high glucose (33 mM) and glucose oxidase (15 mU, G/GO) and the protective effects of sAT were evaluated. Treatment of H9c2 cells with G/GO resulted in an increase in cell death, intracellular ROS level and cell oxidative injury, which were markedly reduced by sAT treatment. Further study revealed that sAT induced the nuclear translocation of Nrf2 and expression of its downstream targets. Moreover, Nrf2 siRNA markedly abolished the cytoprotective effects of sAT. sAT exerted cytoprotective effects against oxidative stress induced by hyperglycemia and the cardioprotective effects of sAT might be through the Nrf2/ARE pathway. Thus, sAT might be a promising candidate for the treatment of diabetic cardiomyopathy.
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Affiliation(s)
- Jialin Duan
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Guo Wei
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Chao Guo
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Jia Cui
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Jiajia Yan
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Ying Yin
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Yue Guan
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Yan Weng
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Yanrong Zhu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Xiaoxiao Wu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Yanhua Wang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Miaomiao Xi
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
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Adil M, Kandhare AD, Dalvi G, Ghosh P, Venkata S, Raygude KS, Bodhankar SL. Ameliorative effect of berberine against gentamicin-induced nephrotoxicity in rats via attenuation of oxidative stress, inflammation, apoptosis and mitochondrial dysfunction. Ren Fail 2016; 38:996-1006. [DOI: 10.3109/0886022x.2016.1165120] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Maixner DW, Yan X, Hooks SB, Weng HR. AMPKα1 knockout enhances nociceptive behaviors and spinal glutamatergic synaptic activities via production of reactive oxygen species in the spinal dorsal horn. Neuroscience 2016; 326:158-169. [PMID: 27058143 DOI: 10.1016/j.neuroscience.2016.03.061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 03/25/2016] [Accepted: 03/28/2016] [Indexed: 12/15/2022]
Abstract
Emerging studies have shown that pharmacological activation of adenosine monophosphate-activated protein kinase (AMPK) produces potent analgesic effects in different animal pain models. Currently, the spinal molecular and synaptic mechanism by which AMPK regulates the pain signaling system remains unclear. To address this issue, we utilized the Cre-LoxP system to conditionally knockout the AMPKα1 gene in the nervous system of mice. We demonstrated that AMPKα1 is imperative for maintaining normal nociception, and mice deficient for AMPKα1 exhibit mechanical allodynia. This is concomitantly associated with increased glutamatergic synaptic activities in neurons located in the superficial spinal dorsal horn, which results from the increased glutamate release from presynaptic terminals and function of ligand-gated glutamate receptors at the postsynaptic neurons. Additionally, AMPKα1 knockout mice have increased activities of extracellular signal-regulated kinases (ERK) and p38 mitogen-activated protein kinases (p38), as well as elevated levels of interleukin-1β (IL-1β), reactive oxygen species (ROS), and heme oxygenase 1 (HO-1) in the spinal dorsal horn. Systemic administration of a non-specific ROS scavenger (phenyl-N-tert-butylnitrone, PBN) or a HO-1 activator (Cobalt protoporphyrin IX, CoPP) attenuated allodynia in AMPKα1 knockout mice. Bath-perfusion of the ROS scavenger or HO-1 activator effectively attenuated the increased ROS levels and glutamatergic synaptic activities in the spinal dorsal horn. Our findings suggest that ROS are the key down-stream signaling molecules mediating the behavioral hypersensitivity in AMPKα1 knockout mice. Thus, targeting AMPKα1 may represent an effective approach for the treatment of pathological pain conditions associated with neuroinflammation at the spinal dorsal horn.
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Affiliation(s)
- Dylan W Maixner
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia College of Pharmacy, Athens, Georgia 30602, USA
| | - Xisheng Yan
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia College of Pharmacy, Athens, Georgia 30602, USA.,Department of Cardiovascular Medicine, The Third Hospital of Wuhan, Wuhan 430074, Hubei Province, China.,Department of Endocrinology and Metabolism, Shanghai Tenth People's hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Shelley B Hooks
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia College of Pharmacy, Athens, Georgia 30602, USA
| | - Han-Rong Weng
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia College of Pharmacy, Athens, Georgia 30602, USA
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Perivascular delivery of resolvin D1 inhibits neointimal hyperplasia in a rat model of arterial injury. J Vasc Surg 2016; 65:207-217.e3. [PMID: 27034112 DOI: 10.1016/j.jvs.2016.01.030] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 01/16/2016] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Lipid mediators derived from omega-3 polyunsaturated fatty acids such as resolvin D1 (RvD1) accelerate the resolution of inflammation and have potential as vascular therapeutics. The objective of this study was to evaluate local perivascular delivery of RvD1 as a means to attenuate neointimal hyperplasia in a rat model of arterial injury. METHODS Smooth muscle cells were harvested from rat aortas to study the effects of RvD1 on rat arterial vascular smooth muscle cell responses in vitro, with focus on inflammation, proliferation, migration, cytoskeletal changes, and cytotoxicity. The safety and efficacy of perivascular delivery of RvD1 through thin biodegradable three-layered poly(lactic-co-glycolic acid) wraps or 25% Pluronic F127 gels were studied in a rat model of carotid angioplasty. A total of 200 ng of RvD1 was loaded into each construct for perivascular delivery after injury. Morphometric and histologic analyses were performed 3 and 14 days after injury. RESULTS RvD1 attenuated rat arterial vascular smooth muscle cell inflammatory pathways, proliferation, migration, and mitogen-induced cytoskeletal changes in vitro, without evidence of cytotoxicity. RvD1-loaded wraps reduced neointimal formation after carotid angioplasty by 59% vs no-wrap controls (P = .001) and by 45% vs vehicle-wrap controls (P = .002). RvD1-loaded Pluronic gels similarly reduced neointimal formation by 49% vs no-gel controls (P = .02) and by 52% vs vehicle-gel controls (P = .02). No group was associated with infection, thrombosis, or negative vessel remodeling. Wraps were found to be easier to apply than gel constructs. Ki67 proliferation index was significantly lower in RvD1-loaded wrap-treated arteries compared with both no-wrap and vehicle-wrap controls at both 3 and 14 days after injury (65% vs no-wrap group and 70% vs vehicle-wrap group at day 3, 49% vs both control groups at day 14; P < .05). Similarly, oxidative stress (30% and 29%; P < .05) and nuclear factor κB activation (42% and 45%; P < .05) were significantly lower in the RvD1-loaded wrap group compared with both no-wrap and vehicle-wrap controls at 3 days after injury. CONCLUSIONS Local perivascular delivery of RvD1 attenuates formation of neointimal hyperplasia without associated toxicity in a rat model of carotid angioplasty. This effect is likely due to attenuation of inflammatory pathways as well as decreased arterial smooth muscle cell proliferation and migration.
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Wu C, Gao J, Cao F, Lu Z, Chen L, Ye J. Molecular cloning, characterization and mRNA expression of six peroxiredoxins from Black carp Mylopharyngodon piceus in response to lipopolysaccharide challenge or dietary carbohydrate. FISH & SHELLFISH IMMUNOLOGY 2016; 50:210-222. [PMID: 26828261 DOI: 10.1016/j.fsi.2016.01.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 01/07/2016] [Accepted: 01/27/2016] [Indexed: 06/05/2023]
Abstract
Peroxiredoxin (Prx) belongs to a cellular antioxidant protein family that plays important roles in innate immune function and anti-oxidative capability. In the present study, six Prxs were cloned from Black carp Mylopharyngodon piceus (MpPrx) by homology cloning and rapid amplification of cDNA ends (RACE) techniques. There were 199, 197, 250, 260, 189 and 222 amino acids in six MpPrxs, respectively. BLAST analysis reveals that MpPrxs shares high identities and similar characteristics with other known Prxs from animals. The phylogenetic analysis evidenced three major subclasses corresponding to one-Cys-Prx (MpPrx6), typical two-Cys-Prx (MpPrx1-4) and atypical 2-Cys-Prx (MpPrx5) that reflected the present hierarchy of vertebrates and invertebrates. Although six MpPrxs are constitutively expressed in all tissues, relatively higher-level mRNA expression levels of six MpPrxs can be detected in liver, eyes, heart and adipose tissues by real-time PCR assays. The transcriptional patterns of six MpPrxs mRNA in liver were detected by real-time PCR in Black carp after lipopolysaccharide (LPS) challenge and treated with graded levels of dietary carbohydrate (CHO) (106.5, 194.3, 288.4 and 379.1 g kg(-1)), respectively. These results showed that stimulation with LPS could induce up-expression of six MpPrxs mRNA, and the variations of MpPrx4 were more sensitive than these of other MpPrxs in the liver of Black carp. Compared with those in group with 106.5 g kg(-1) dietary CHO, the expression levels of MpPrx2, MpPrx3 and MpPrx6 were significantly down-regulated while MpPrx5 were significantly induced in liver of Black carp fed with adequate dietary CHO (194.3 g kg(-1)). In addition, significant up-regulations of MpPrx2, MpPrx3 and MpPrx6 were observed in Black carp fed with excessive dietary CHO (379.1 g kg(-1)). And MpPrx4 could be constantly induced with increasing dietary CHO contents in this study. These results indicated that MpPrxs were constitutive and inducible proteins and might play important roles in innate immune function after LPS challenge and regulating redox homeostasis in the metabolism of dietary CHO.
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Affiliation(s)
- Chenglong Wu
- School of Life Science, Huzhou University, 759 Erhuan Road (E), Huzhou, 313000, PR China.
| | - Jun'e Gao
- School of Life Science, Huzhou University, 759 Erhuan Road (E), Huzhou, 313000, PR China
| | - Fang Cao
- School of Life Science, Huzhou University, 759 Erhuan Road (E), Huzhou, 313000, PR China
| | - Zhibin Lu
- School of Life Science, Huzhou University, 759 Erhuan Road (E), Huzhou, 313000, PR China
| | - Lian Chen
- School of Life Science, Huzhou University, 759 Erhuan Road (E), Huzhou, 313000, PR China
| | - Jinyun Ye
- School of Life Science, Huzhou University, 759 Erhuan Road (E), Huzhou, 313000, PR China
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140
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Kim H, Lee GR, Kim J, Baek JY, Jo YJ, Hong SE, Kim SH, Lee J, Lee HI, Park SK, Kim HM, Lee HJ, Chang TS, Rhee SG, Lee JS, Jeong W. Sulfiredoxin inhibitor induces preferential death of cancer cells through reactive oxygen species-mediated mitochondrial damage. Free Radic Biol Med 2016; 91:264-74. [PMID: 26721593 DOI: 10.1016/j.freeradbiomed.2015.12.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 11/05/2015] [Accepted: 12/19/2015] [Indexed: 01/08/2023]
Abstract
Recent studies have shown that many types of cancer cells have increased levels of reactive oxygen species (ROS) and enhance antioxidant capacity as an adaptation to intrinsic oxidative stress, suggesting that cancer cells are more vulnerable to oxidative insults and are more dependent on antioxidant systems compared with normal cells. Thus, disruption of redox homeostasis caused by a decline in antioxidant capacity may provide a method for the selective death of cancer cells. Here we show that ROS-mediated selective death of tumor cells can be caused by inhibiting sulfiredoxin (Srx), which reduces hyperoxidized peroxiredoxins, leading to their reactivation. Srx inhibitor increased the accumulation of sulfinic peroxiredoxins and ROS, which led to oxidative mitochondrial damage and caspase activation, resulting in the death of A549 human lung adenocarcinoma cells. Srx depletion also inhibited the growth of A549 cells like Srx inhibition, and the cytotoxic effects of Srx inhibitor were considerably reversed by Srx overexpression or antioxidants such as N-acetyl cysteine and butylated hydroxyanisol. Moreover, Srx inhibitor rendered tumorigenic ovarian cells more susceptible to ROS-mediated death compared with nontumorigenic cells and significantly suppressed the growth of A549 xenografts without acute toxicity. Our results suggest that Srx might serve as a novel therapeutic target for cancer treatment based on ROS-mediated cell death.
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Affiliation(s)
- Hojin Kim
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Gong-Rak Lee
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Jiwon Kim
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Jin Young Baek
- College of Pharmacy, Ewha Womans University, Seoul 120-750, South Korea
| | - You-Jin Jo
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Seong-Eun Hong
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Sung Hoon Kim
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Jiae Lee
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Hye In Lee
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea
| | - Song-Kyu Park
- College of Pharmacy, Korea University, Sejong 339-700, South Korea
| | - Hwan Mook Kim
- College of Pharmacy, Gachon University of Medicine and Science, Incheon 406-799, South Korea
| | - Hwa Jeong Lee
- College of Pharmacy, Ewha Womans University, Seoul 120-750, South Korea
| | - Tong-Shin Chang
- College of Pharmacy, Ewha Womans University, Seoul 120-750, South Korea
| | - Sue Goo Rhee
- Yonsei Biomedical Research Institute, Yonsei University College of Medicine, Seoul 120-752, South Korea
| | - Ju-Seog Lee
- Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77054, USA
| | - Woojin Jeong
- Department of Life Science and the Research Center for Cellular Homeostasis, Ewha Womans University, Seoul 120-750, South Korea.
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141
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Romanello V, Sandri M. Mitochondrial Quality Control and Muscle Mass Maintenance. Front Physiol 2016; 6:422. [PMID: 26793123 PMCID: PMC4709858 DOI: 10.3389/fphys.2015.00422] [Citation(s) in RCA: 225] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 12/22/2015] [Indexed: 12/24/2022] Open
Abstract
Loss of muscle mass and force occurs in many diseases such as disuse/inactivity, diabetes, cancer, renal, and cardiac failure and in aging-sarcopenia. In these catabolic conditions the mitochondrial content, morphology and function are greatly affected. The changes of mitochondrial network influence the production of reactive oxygen species (ROS) that play an important role in muscle function. Moreover, dysfunctional mitochondria trigger catabolic signaling pathways which feed-forward to the nucleus to promote the activation of muscle atrophy. Exercise, on the other hand, improves mitochondrial function by activating mitochondrial biogenesis and mitophagy, possibly playing an important part in the beneficial effects of physical activity in several diseases. Optimized mitochondrial function is strictly maintained by the coordinated activation of different mitochondrial quality control pathways. In this review we outline the current knowledge linking mitochondria-dependent signaling pathways to muscle homeostasis in aging and disease and the resulting implications for the development of novel therapeutic approaches to prevent muscle loss.
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Affiliation(s)
| | - Marco Sandri
- Venetian Institute of Molecular MedicinePadova, Italy; Department of Biomedical Science, University of PadovaPadova, Italy; Institute of Neuroscience, Consiglio Nazionale delle RicerchePadova, Italy; Department of Medicine, McGill UniversityMontreal, QC, Canada
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142
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Cui G, Degen AA, Wei X, Zhou J, Ding L, Shang Z, Wei X, Long R. Trolox equivalent antioxidant capacities and fatty acids profile of 18 alpine plants available as forage for yaks on the Qinghai-Tibetan Plateau. RANGELAND JOURNAL 2016. [DOI: 10.1071/rj16012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Traditionally, yaks (Poephagus grunniens) raised on the Qinghai-Tibetan plateau graze only natural pasture and much of their diet consists of sedges, in particular Kobresia spp. These ruminants are subjected to an extremely harsh environment of strong UV radiation, hypoxia and severe cold, which can lead to high oxidative stress. Consequently, it was predicted that sedges would contain high concentrations of functional antioxidants when compared with other alpine plants, and that this would help them survive the harsh conditions. To test the prediction, 18 alpine plants on the Qinghai-Tibetan plateau, which are available to yaks as forage, were examined. These plants, including four sedges, five grasses, five forbs and four shrubs, were analysed for gross constituents, Trolox equivalent antioxidant capacity, phenol content, and fatty acids composition. Based on their Trolox equivalent antioxidant capacity, the 18 plants were divided into three groups: low, medium and high. Three of the four sedges were ranked in the medium group and one in the low group, whereas three of four shrubs were ranked in the high group. The total phenol content of the plants ranged between 1.1 and 12.4 g gallic acid equivalents per 100 g DM, with the shrubs containing the highest concentrations. The prediction that sedges would contain higher antioxidant capacity than other alpine plants was not supported. It was concluded that other factors such as anti-nutritional contents and biomass availability are also important in determining dietary selection in yaks.
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143
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Wang Y, Yang L, Chen X, Ye T, Zhong B, Liu R, Wu Y, Chan Z. Major latex protein-like protein 43 (MLP43) functions as a positive regulator during abscisic acid responses and confers drought tolerance in Arabidopsis thaliana. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:421-34. [PMID: 26512059 PMCID: PMC4682443 DOI: 10.1093/jxb/erv477] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Drought stress is one of the disadvantageous environmental conditions for plant growth and reproduction. Given the importance of abscisic acid (ABA) to plant growth and abiotic stress responses, identification of novel components involved in ABA signalling transduction is critical. In this study, we screened numerous Arabidopsis thaliana mutants by seed germination assay and identified a mutant mlp43 (major latex protein-like 43) with decreased ABA sensitivity in seed germination. The mlp43 mutant was sensitive to drought stress while the MLP43-overexpressed transgenic plants were drought tolerant. The tissue-specific expression pattern analysis showed that MLP43 was predominantly expressed in cotyledons, primary roots and apical meristems, and a subcellular localization study indicated that MLP43 was localized in the nucleus and cytoplasm. Physiological and biochemical analyses indicated that MLP43 functioned as a positive regulator in ABA- and drought-stress responses in Arabidopsis through regulating water loss efficiency, electrolyte leakage, ROS levels, and as well as ABA-responsive gene expression. Moreover, metabolite profiling analysis indicated that MLP43 could modulate the production of primary metabolites under drought stress conditions. Reconstitution of ABA signalling components in Arabidopsis protoplasts indicated that MLP43 was involved in ABA signalling transduction and acted upstream of SnRK2s by directly interacting with SnRK2.6 and ABF1 in a yeast two-hybrid assay. Moreover, ABA and drought stress down-regulated MLP43 expression as a negative feedback loop regulation to the performance of MLP43 in ABA and drought stress responses. Therefore, this study provided new insights for interpretation of physiological and molecular mechanisms of Arabidopsis MLP43 mediating ABA signalling transduction and drought stress responses.
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Affiliation(s)
- Yanping Wang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, Hubei Province, China
| | - Li Yang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, Hubei Province, China University of Chinese Academy of Sciences, Beijing, China
| | - Xi Chen
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, Hubei Province, China
| | - Tiantian Ye
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, Hubei Province, China University of Chinese Academy of Sciences, Beijing, China
| | - Bao Zhong
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, Hubei Province, China University of Chinese Academy of Sciences, Beijing, China
| | - Ruijie Liu
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, Hubei Province, China University of Chinese Academy of Sciences, Beijing, China
| | - Yan Wu
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, Hubei Province, China
| | - Zhulong Chan
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, Hubei Province, China
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144
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Sampath S, Kalimuthu B, Veeramani V, Janardhanam S, Baran MA, Chellan R. Evaluation of total antioxidant and free radical scavenging activities of Callistemon citrinus (Curtis) Skeels extracts by biochemical and electron paramagnetic resonance analyses. RSC Adv 2016. [DOI: 10.1039/c5ra24410b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Free radical scavenging activity of Callistemon citrinus (Curtis) Skeels extracts analysed using biochemical and Electron Paramagnetic Resonance (EPR) studies.
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Affiliation(s)
- Sowndarya Sampath
- Department of Biotechnology
- Biotechnology Division–CSIR-Central Leather Research Institute
- Chennai–600 020
- India
| | - Balasaraswathi Kalimuthu
- Department of Biotechnology
- Biotechnology Division–CSIR-Central Leather Research Institute
- Chennai–600 020
- India
| | - Vidhya Veeramani
- Department of Biotechnology
- Biotechnology Division–CSIR-Central Leather Research Institute
- Chennai–600 020
- India
| | - Sridevi Janardhanam
- Chemical Physics Laboratory–CSIR-Central Leather Research Institute
- Chennai
- India
| | - Mandal Asit Baran
- Chemical Laboratory–CSIR-Central Leather Research Institute
- Chennai
- India
| | - Rose Chellan
- Department of Biotechnology
- Biotechnology Division–CSIR-Central Leather Research Institute
- Chennai–600 020
- India
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145
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Nicolson GL, de Mattos GF, Settineri R, Costa C, Ellithorpe R, Rosenblatt S, La Valle J, Jimenez A, Ohta S. Clinical Effects of Hydrogen Administration: From Animal and Human Diseases to Exercise Medicine. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ijcm.2016.71005] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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146
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Berthiaume J, Kirk J, Ranek M, Lyon R, Sheikh F, Jensen B, Hoit B, Butany J, Tolend M, Rao V, Willis M. Pathophysiology of Heart Failure and an Overview of Therapies. Cardiovasc Pathol 2016. [DOI: 10.1016/b978-0-12-420219-1.00008-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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147
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Zhou S, Wang P, Qiao Y, Ge Y, Wang Y, Quan S, Yao R, Zhuang S, Wang LJ, Du Y, Liu Z, Gong R. Genetic and Pharmacologic Targeting of Glycogen Synthase Kinase 3β Reinforces the Nrf2 Antioxidant Defense against Podocytopathy. J Am Soc Nephrol 2015; 27:2289-308. [PMID: 26647425 DOI: 10.1681/asn.2015050565] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 10/27/2015] [Indexed: 01/07/2023] Open
Abstract
Evidence suggests that the glycogen synthase kinase 3 (GSK3)-dictated nuclear exclusion and degradation of Nrf2 is pivotal in switching off the self-protective antioxidant stress response after injury. Here, we examined the mechanisms underlying this regulation in glomerular disease. In primary podocytes, doxorubicin elicited cell death and actin cytoskeleton disorganization, concomitant with overactivation of GSK3β (the predominant GSK3 isoform expressed in glomerular podocytes) and minimal Nrf2 activation. SB216763, a highly selective small molecule inhibitor of GSK3, exerted a protective effect that depended on the potentiated Nrf2 antioxidant response, marked by increased Nrf2 expression and nuclear accumulation and augmented production of the Nrf2 target heme oxygenase-1. Ectopic expression of the kinase-dead mutant of GSK3β in cultured podocytes reinforced the doxorubicin-induced Nrf2 activation and prevented podocyte injury. Conversely, a constitutively active GSK3β mutant blunted the doxorubicin-induced Nrf2 response and exacerbated podocyte injury, which could be abolished by treatment with SB216763. In murine models of doxorubicin nephropathy or nephrotoxic serum nephritis, genetic targeting of GSK3β by doxycycline-inducible podocyte-specific knockout or pharmacologic targeting by SB216763 significantly attenuated albuminuria and ameliorated histologic signs of podocyte injury, including podocytopenia, loss of podocyte markers, podocyte de novo expression of desmin, and ultrastructural lesions of podocytopathy (such as foot process effacement). This beneficial outcome was likely attributable to an enhanced Nrf2 antioxidant response in glomerular podocytes because the selective Nrf2 antagonist trigonelline abolished the proteinuria-reducing and podocyte-protective effect. Collectively, our results suggest the GSK3β-regulated Nrf2 antioxidant response as a novel therapeutic target for protecting podocytes and treating proteinuric glomerulopathies.
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Affiliation(s)
- Sijie Zhou
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Division of Kidney Disease and Hypertension, Department of Medicine, and
| | - Pei Wang
- Division of Kidney Disease and Hypertension, Department of Medicine, and
| | - Yingjin Qiao
- Division of Kidney Disease and Hypertension, Department of Medicine, and
| | - Yan Ge
- Division of Kidney Disease and Hypertension, Department of Medicine, and
| | - Yingzi Wang
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Songxia Quan
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ricky Yao
- Division of Kidney Disease and Hypertension, Department of Medicine, and
| | - Shougang Zhuang
- Division of Kidney Disease and Hypertension, Department of Medicine, and
| | - Li Juan Wang
- Department of Pathology, Rhode Island Hospital, Brown University School of Medicine, Providence, Rhode Island; and
| | - Yong Du
- Department of Biomedical Engineering, University of Houston, Houston, Texas
| | - Zhangsuo Liu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China;
| | - Rujun Gong
- Division of Kidney Disease and Hypertension, Department of Medicine, and
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148
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The antiradical activity of some selected flavones and flavonols. Experimental and quantum mechanical study. J Mol Model 2015; 21:307. [DOI: 10.1007/s00894-015-2848-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 10/23/2015] [Indexed: 10/22/2022]
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149
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fMLP-Induced IL-8 Release Is Dependent on NADPH Oxidase in Human Neutrophils. J Immunol Res 2015; 2015:120348. [PMID: 26634216 PMCID: PMC4655063 DOI: 10.1155/2015/120348] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 09/30/2015] [Accepted: 10/07/2015] [Indexed: 12/11/2022] Open
Abstract
N-Formyl-methionyl-leucyl-phenylalanine (fMLP) and platelet-activating factor (PAF) induce similar intracellular signalling profiles; but only fMLP induces interleukin-8 (IL-8) release and nicotinamide adenine dinucleotide phosphate reduced (NADPH) oxidase activity in neutrophils. Because the role of ROS on IL-8 release in neutrophils is until now controversial, we assessed if NADPH oxidase is involved in the IL-8 secretions and PI3K/Akt, MAPK, and NF-κB pathways activity induced by fMLP. Neutrophils were obtained from healthy volunteers. IL-8 was measured by ELISA, IL-8 mRNA by qPCR, and ROS production by luminol-amplified chemiluminescence, reduction of ferricytochrome c, and FACS. Intracellular pH changes were detected by spectrofluorescence. ERK1/2, p38 MAPK, and Akt phosphorylation were analysed by immunoblotting and NF-κB was analysed by immunocytochemistry. Hydroxy-3-methoxyaceto-phenone (HMAP), diphenyleneiodonium (DPI), and siRNA Nox2 reduced the ROS and IL-8 release in neutrophils treated with fMLP. HMAP, DPI, and amiloride (a Na+/H+ exchanger inhibitor) inhibited the Akt phosphorylation and did not affect the p38 MAPK and ERK1/2 activity. DPI and HMAP reduced NF-κB translocation induced by fMLP. We showed that IL-8 release induced by fMLP is dependent on NADPH oxidase, and ROS could play a redundant role in cell signalling, ultimately activating the PI3K/Akt and NF-κB pathways in neutrophils.
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150
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Zhang T, Hu Y, Tang M, Kong L, Ying J, Wu T, Xue Y, Pu Y. Liver Toxicity of Cadmium Telluride Quantum Dots (CdTe QDs) Due to Oxidative Stress in Vitro and in Vivo. Int J Mol Sci 2015; 16:23279-99. [PMID: 26404244 PMCID: PMC4632698 DOI: 10.3390/ijms161023279] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 09/08/2015] [Accepted: 09/15/2015] [Indexed: 01/01/2023] Open
Abstract
With the applications of quantum dots (QDs) expanding, many studies have described the potential adverse effects of QDs, yet little attention has been paid to potential toxicity of QDs in the liver. The aim of this study was to investigate the effects of cadmium telluride (CdTe) QDs in mice and murine hepatoma cells alpha mouse liver 12 (AML 12). CdTe QDs administration significantly increased the level of lipid peroxides marker malondialdehyde (MDA) in the livers of treated mice. Furthermore, CdTe QDs caused cytotoxicity in AML 12 cells in a dose- and time-dependent manner, which was likely mediated through the generation of reactive oxygen species (ROS) and the induction of apoptosis. An increase in ROS generation with a concomitant increase in the gene expression of the tumor suppressor gene p53, the pro-apoptotic gene Bcl-2 and a decrease in the anti-apoptosis gene Bax, suggested that a mitochondria mediated pathway was involved in CdTe QDs' induced apoptosis. Finally, we showed that NF-E2-related factor 2 (Nrf2) deficiency blocked induced oxidative stress to protect cells from injury induced by CdTe QDs. These findings provide insights into the regulatory mechanisms involved in the activation of Nrf2 signaling that confers protection against CdTe QDs-induced apoptosis in hepatocytes.
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Affiliation(s)
- Ting Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
- Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, China.
| | - Yuanyuan Hu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
| | - Meng Tang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
- Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, China.
| | - Lu Kong
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
| | - Jiali Ying
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
| | - Tianshu Wu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
- Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, China.
| | - Yuying Xue
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
| | - Yuepu Pu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China.
- Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, China.
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