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Colon Hidalgo D, Jordan M, Posey JN, Burciaga SD, Nguyen TTN, Sul C, Lewis CV, Delaney C, Nozik ES. Lung EC-SOD Overexpression Prevents Hypoxia-Induced Platelet Activation and Lung Platelet Accumulation. Antioxidants (Basel) 2024; 13:975. [PMID: 39199221 PMCID: PMC11351248 DOI: 10.3390/antiox13080975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/06/2024] [Accepted: 08/08/2024] [Indexed: 09/01/2024] Open
Abstract
Pulmonary hypertension (PH) is a progressive disease marked by pulmonary vascular remodeling and right ventricular failure. Inflammation and oxidative stress are critical in PH pathogenesis, with early pulmonary vascular inflammation preceding vascular remodeling. Extracellular superoxide dismutase (EC-SOD), a key vascular antioxidant enzyme, mitigates oxidative stress and protects against inflammation and fibrosis in diverse lung and vascular disease models. This study utilizes a murine hypobaric hypoxia model to investigate the role of lung EC-SOD on hypoxia-induced platelet activation and platelet lung accumulation, a critical factor in PH-related inflammation. We found that lung EC-SOD overexpression blocked hypoxia-induced platelet activation and platelet accumulation in the lung. Though lung EC-SOD overexpression increased lung EC-SOD content, it did not impact plasma extracellular SOD activity. However, ex vivo, exogenous extracellular SOD treatment specifically blunted convulxin-induced platelet activation but did not blunt platelet activation with thrombin or ADP. Our data identify platelets as a novel target of EC-SOD in response to hypoxia, providing a foundation to advance the understanding of dysregulated redox signaling and platelet activation in PH and other chronic hypoxic lung diseases.
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Affiliation(s)
- Daniel Colon Hidalgo
- Department of Medicine, Division of Pulmonary and Critical Care, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Mariah Jordan
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pediatrics, Division of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Janelle N. Posey
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pediatrics, Division of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Samuel D. Burciaga
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Thi-Tina N. Nguyen
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Christina Sul
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pediatrics, Division of Critical Care, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Caitlin V. Lewis
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pediatrics, Division of Critical Care, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Cassidy Delaney
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pediatrics, Division of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Eva S. Nozik
- Cardiovascular Pulmonary Research Group, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pediatrics, Division of Critical Care, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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Sul C, Lewis C, Dee N, Burns N, Oshima K, Schmidt E, Vohwinkel C, Nozik E. Release of extracellular superoxide dismutase into alveolar fluid protects against acute lung injury and inflammation in Staphylococcus aureus pneumonia. Am J Physiol Lung Cell Mol Physiol 2023; 324:L445-L455. [PMID: 36749572 PMCID: PMC10026994 DOI: 10.1152/ajplung.00217.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 01/13/2023] [Accepted: 02/03/2023] [Indexed: 02/08/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) remains a significant cause of morbidity and mortality in critically ill patients. Oxidative stress and inflammation play a crucial role in the pathogenesis of ARDS. Extracellular superoxide dismutase (EC-SOD) is abundant in the lung and is an important enzymatic defense against superoxide. Human single-nucleotide polymorphism in matrix binding region of EC-SOD leads to the substitution of arginine to glycine at position 213 (R213G) and results in release of EC-SOD into alveolar fluid, without affecting enzyme activity. We hypothesized that R213G EC-SOD variant protects against lung injury and inflammation via the blockade of neutrophil recruitment in infectious model of methicillin-resistant S. aureus (MRSA) pneumonia. After inoculation with MRSA, wild-type (WT) mice had impaired integrity of alveolar-capillary barrier and increased levels of IL-1β, IL-6, and TNF-α in the broncho-alveolar lavage fluid (BALF), while infected mice expressing R213G EC-SOD variant maintained the integrity of alveolar-capillary interface and had attenuated levels of proinflammatory cytokines. MRSA-infected mice expressing R213G EC-SOD variant also had attenuated neutrophil numbers in BALF and decreased expression of neutrophil chemoattractant CXCL1 by the alveolar epithelial ATII cells, compared with the infected WT group. The decreased neutrophil numbers in R213G mice were not due to increased rate of apoptosis. Mice expressing R213G variant had a differential effect on neutrophil functionality-the generation of neutrophil extracellular traps (NETs) but not myeloperoxidase (MPO) levels were attenuated in comparison with WT controls. Despite having the same bacterial load in the lung as WT controls, mice expressing R213G EC-SOD variant were protected from extrapulmonary dissemination of bacteria.
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Affiliation(s)
- Christina Sul
- Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Caitlin Lewis
- Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Nathan Dee
- Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Nana Burns
- Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Kaori Oshima
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Eric Schmidt
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Christine Vohwinkel
- Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
| | - Eva Nozik
- Cardiovascular Pulmonary Research Laboratories, Department of Pediatrics, Division of Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, United States
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Gonzales J, Fraidenburg DR. Pharmacology and Emerging Therapies for Group 3 Pulmonary Hypertension Due to Chronic Lung Disease. Pharmaceuticals (Basel) 2023; 16:ph16030418. [PMID: 36986517 PMCID: PMC10058846 DOI: 10.3390/ph16030418] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/12/2023] Open
Abstract
Pulmonary hypertension (PH) frequently complicates chronic lung disease and is associated with high morbidity and poor outcomes. Individuals with interstitial lung disease and chronic obstructive pulmonary disease develop PH due to structural changes associated with the destruction of lung parenchyma and vasculature with concurrent vasoconstriction and pulmonary vascular remodeling similar to what is observed in idiopathic pulmonary arterial hypertension (PAH). Treatment for PH due to chronic lung disease is largely supportive and therapies specific to PAH have had minimal success in this population with exception of the recently FDA-approved inhaled prostacyclin analogue treprostinil. Given the significant disease burden of PH due to chronic lung diseases and its associated mortality, a great need exists for improved understanding of molecular mechanisms leading to vascular remodeling in this population. This review will discuss the current understanding of pathophysiology and emerging therapeutic targets and potential pharmaceuticals.
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Potential Role of Superoxide Dismutase 3 (SOD3) in Resistance to Influenza A Virus Infection. Antioxidants (Basel) 2023; 12:antiox12020354. [PMID: 36829913 PMCID: PMC9952479 DOI: 10.3390/antiox12020354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Influenza A virus infection induces the production of excessive reactive oxygen species (ROS). Overproduction of ROS can overwhelm the antioxidant defense system, leading to increasing intensive oxidative stress. However, antioxidant defense against oxidative damage induced by influenza A virus infection, and in particular the significance of the SOD3 response in the pathogenesis of influenza virus infection, has not been well characterized. Here, we investigated the potential role of SOD3 in resistance to influenza A virus infection. In this study, SOD3, as an important antioxidant enzyme, was shown to be highly elevated in A549 cells following influenza A virus infection. Furthermore, inhibition of SOD3 impacted viral replication and virulence. We found that SOD3 disrupts IAV replication by impairing the synthesis of vRNA, whereas it did not affect viral ribonucleoprotein nuclear export. In addition, overexpression of SOD3 greatly reduced the levels of ROS caused by influenza A virus infection, regulated the inflammatory response to virus infection by inhibiting the phosphorylation of p65 of the NF-κB signaling pathway, and inhibited virus-induced apoptosis to a certain extent. Taken together, these findings indicate that SOD3 is actively involved in influenza A virus replication. Pharmacological modulation or targeting of SOD3 may pave the way for a novel therapeutic approach to combating influenza A virus infection.
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Elajaili H, Hernandez-Lagunas L, Harris P, Sparagna GC, Jonscher R, Ohlstrom D, Sucharov CC, Bowler RP, Suliman H, Fritz KS, Roede JR, Nozik ES. Extracellular superoxide dismutase (EC-SOD) R213G variant reduces mitochondrial ROS and preserves mitochondrial function in bleomycin-induced lung injury: EC-SOD R213G variant and intracellular redox regulation. ADVANCES IN REDOX RESEARCH 2022; 5:100035. [PMID: 38273965 PMCID: PMC10810244 DOI: 10.1016/j.arres.2022.100035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Extracellular superoxide dismutase (EC-SOD) is highly expressed in the lung and vasculature. A common human single nucleotide polymorphism (SNP) in the matrix binding region of EC-SOD leads to a single amino acid substitution, R213G, and alters EC-SOD tissue binding affinity. The change in tissue binding affinity redistributes EC-SOD from tissue to extracellular fluids. Mice (R213G mice) expressing a knock-in of this EC-SOD SNP exhibit elevated plasma and reduced lung EC-SOD content and activity and are protected against bleomycin-induced lung injury and inflammation. It is unknown how the redistribution of EC-SOD alters site-specific redox-regulated molecules relevant for protection. In this study, we tested the hypothesis that the change in the local EC-SOD content would influence not only the extracellular redox microenvironment where EC-SOD is localized but also protect the intracellular redox status of the lung. Mice were treated with bleomycin and harvested 7 days post-treatment. Superoxide levels, measured by electron paramagnetic resonance (EPR), were lower in plasma and Bronchoalveolar lavage fluid (BALF) cells in R213G mice compared to wild-type (WT) mice, while lung cellular superoxide levels in R213G mice were not elevated post-bleomycin compared to WT mice despite low lung EC-SOD levels. Lung glutathione redox potential (EhGSSG), determined by HPLC and fluorescence, was more oxidized in WT compared to R213G mice. In R213G mice, lung mitochondrial oxidative stress was reduced shown by mitochondrial superoxide level measured by EPR in lung and the resistance to bleomycin-induced cardiolipin oxidation. Bleomycin treatment suppressed mitochondrial respiration in WT mice. Mitochondrial function was impaired at baseline in R213G mice but did not exhibit further suppression in respiration post-bleomycin. Collectively, the results indicate that R213G variant preserves intracellular redox state and protects mitochondrial function in the setting of bleomycin-induced inflammation.
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Affiliation(s)
- Hanan Elajaili
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Laura Hernandez-Lagunas
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Peter Harris
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Genevieve C. Sparagna
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Raleigh Jonscher
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Denis Ohlstrom
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Carmen C. Sucharov
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | - Hagir Suliman
- Departments of Anesthesiology and Pathology, Duke University School of Medicine, Durham, North Carolina
| | - Kristofer S. Fritz
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - James R. Roede
- Department of Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Eva S. Nozik
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado
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Wei A, Gao Q, Chen F, Zhu X, Chen X, Zhang L, Su X, Dai J, Shi Y, Cao W. Inhibition of DNA methylation derepresses PPARγ and attenuates pulmonary fibrosis. Br J Pharmacol 2021; 179:1304-1318. [PMID: 34378791 DOI: 10.1111/bph.15655] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 07/13/2021] [Accepted: 08/02/2021] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND AND PURPOSE Development of pulmonary fibrosis is associated with altered DNA methylation modifications of fibrogenic gene expressions; however, their causal relationships and the underlying mechanisms remain unclear. This study investigates the critical role of DNA methylation aberration-associated suppression of PPARγ (peroxisome proliferator-activated receptor-gamma) in pulmonary fibrosis. EXPERIMENTAL APPROACH Expressions of PPARγ and bioactive DNA methyltranferases, and PPARγ promoter methylation status were examined from fibrotic lungs of idiopathic pulmonary fibrosis (IPF) patients and bleomycin (Blm)-treated mice. DNA demethylating agent 5-Aza-2'-deoxycytidine (5aza) and glycyrrhizic acid (GA) derived from medicinal plant were assessed for their PPARγ derepression and anti-pulmonary fibrosis activities. PPARγ knockout mice were created to determine the critical role of PPARγ in the protections. KEY RESULTS Lung PPARγ expressions were markedly suppressed in IPF patients and Blm mice, accompanied by increased methyltransferase (DNMT) 1/DNMT3a and PPARγ promoter hypermethylation. Administrations of 5aza and GA similarly demethylated PPARγ promoter, recovered the PPARγ loss and alleviated the fibrotic lung pathologies, including structural alterations and adverse expressions of fibrotic mediators and inflammatory cytokines. In cultured lung fibroblast and alveolar epithelial cells, GA alleviated the fibrotic PPARγ suppression in a gain of DNMT-sensitive manner, and in PPARγ knockout mice, the anti-fibrotic effects of 5aza and GA were significantly reduced, suggesting that PPARγ is a critical mediator of epigenetic pulmonary fibrogenesis. CONCLUSION AND IMPLICATIONS Aberrant DNMT1/3a elevations and the resultant PPARγ suppression contribute significantly to the development of pulmonary fibrosis, and strategies targeting DNMT/PPARγ axis by synthetic or natural small compounds might benefit patients with pulmonary fibrotic disorders.
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Affiliation(s)
- Ai Wei
- Organ Fibrosis and Remodeling Research Center, Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing, China.,Department of Respiratory and Critical Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Qi Gao
- Organ Fibrosis and Remodeling Research Center, Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing, China
| | - Fang Chen
- Organ Fibrosis and Remodeling Research Center, Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing, China
| | - Xiaobo Zhu
- Organ Fibrosis and Remodeling Research Center, Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing, China
| | - Xingren Chen
- Organ Fibrosis and Remodeling Research Center, Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing, China
| | - Lijun Zhang
- Organ Fibrosis and Remodeling Research Center, Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing, China
| | - Xin Su
- Department of Respiratory and Critical Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Jinghong Dai
- Department of Pulmonary and Critical Care Medicine, The Affiliated Drum Tower Hospital of Nanjing University School of Medicine, Nanjing, China
| | - Yi Shi
- Department of Respiratory and Critical Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Wangsen Cao
- Organ Fibrosis and Remodeling Research Center, Jiangsu Key Laboratory of Molecular Medicine, Nanjing University School of Medicine, Nanjing, China
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Sun YL, Bai T, Zhou L, Zhu RT, Wang WJ, Liang RP, Li J, Zhang CX, Gou JJ. SOD3 deficiency induces liver fibrosis by promoting hepatic stellate cell activation and epithelial-mesenchymal transition. J Cell Physiol 2021; 236:4313-4329. [PMID: 33230845 DOI: 10.1002/jcp.30174] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 09/14/2020] [Accepted: 10/06/2020] [Indexed: 12/18/2022]
Abstract
Hepatic stellate cell (HSC) activation plays an important role in the pathogenesis of liver fibrosis, and epithelial-mesenchymal transition (EMT) is suggested to potentially promote HSC activation. Superoxide dismutase 3 (SOD3) is an extracellular antioxidant defense against oxidative damage. Here, we found downregulation of SOD3 in a mouse model of liver fibrosis induced by carbon tetrachloride (CCl4 ). SOD3 deficiency induced spontaneous liver injury and fibrosis with increased collagen deposition, and further aggravated CCl4 -induced liver injury in mice. Depletion of SOD3 enhanced HSC activation marked by increased α-smooth muscle actin and subsequent collagen synthesis primarily collagen type I in vivo, and promoted transforming growth factor-β1 (TGF-β1)-induced HSC activation in vitro. SOD3 deficiency accelerated EMT process in the liver and TGF-β1-induced EMT of AML12 hepatocytes, as evidenced by loss of E-cadherin and gain of N-cadherin and vimentin. Notably, SOD3 expression and its pro-fibrogenic effect were positively associated with sirtuin 1 (SIRT1) expression. SOD3 deficiency inhibited adenosine monophosphate-activated protein kinase (AMPK) signaling to downregulate SIRT1 expression and thus involving in liver fibrosis. Enforced expression of SIRT1 inhibited SOD3 deficiency-induced HSC activation and EMT, whereas depletion of SIRT1 counteracted the inhibitory effect of SOD3 in vitro. These findings demonstrate that SOD3 deficiency contributes to liver fibrogenesis by promoting HSC activation and EMT process, and suggest a possibility that SOD3 may function through modulating SIRT1 via the AMPK pathway in liver fibrosis.
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Affiliation(s)
- Yu-Ling Sun
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
| | - Tao Bai
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
- Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Lin Zhou
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
- Department of Digestive, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Rong-Tao Zhu
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
| | - Wei-Jie Wang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
| | - Ruo-Peng Liang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
| | - Jian Li
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
| | - Chi-Xian Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
| | - Jian-Jun Gou
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Institute of Hepatobiliary and Pancreatic Diseases, Zhengzhou University, Zhengzhou, China
- Key Lab of Hepatobiliary and Pancreatic Diseases, Zhengzhou, China
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Bryant AJ, Pham A, Gogoi H, Mitchell CR, Pais F, Jin L. The Third Man: DNA sensing as espionage in pulmonary vascular health and disease. Pulm Circ 2021; 11:2045894021996574. [PMID: 33738095 PMCID: PMC7934053 DOI: 10.1177/2045894021996574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 02/01/2021] [Indexed: 01/01/2023] Open
Abstract
For as long as nucleic acids have been utilized to vertically and horizontally transfer genetic material, living organisms have had to develop methods of recognizing cytosolic DNA as either pathogenic (microbial invasion) or physiologic (mitosis and cellular proliferation). Derangement in key signaling molecules involved in these pathways of DNA sensing result in a family of diseases labeled interferonopathies. An interferonopathy, characterized by constitutive expression of type I interferons, ultimately manifests as severe autoimmune disease at a young age. Afflicted patients present with a constellation of immune-mediated conditions, including primary lung manifestations such as pulmonary fibrosis and pulmonary hypertension. The latter condition is especially interesting in light of the known role that DNA damage plays in a variety of types of inherited and induced pulmonary hypertension, with free DNA detection elevated in the circulation of affected individuals. While little is known regarding the role of cytosolic DNA sensing in development of pulmonary vascular disease, exciting new research in the related fields of immunology and oncology potentially sheds light on future areas of fruitful exploration. As such, the goal of this review is to summarize the state of the field of nucleic acid sensing, extrapolating common shared pathways that parallel our knowledge of pulmonary hypertension, in a molecular and cell-specific manner. Principles of DNA sensing related to known pulmonary injury inducing stimuli are also evaluated, in addition to potential therapeutic targets. Finally, future directions in pulmonary hypertension research and treatments will be briefly discussed.
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Affiliation(s)
- Andrew J. Bryant
- University of Florida College of Medicine, Department of Medicine, Gainesville, FL, USA
| | - Ann Pham
- University of Florida College of Medicine, Department of Medicine, Gainesville, FL, USA
| | - Himanshu Gogoi
- University of Florida College of Medicine, Department of Medicine, Gainesville, FL, USA
| | - Carly R. Mitchell
- University of Florida College of Medicine, Department of Medicine, Gainesville, FL, USA
| | - Faye Pais
- University of Florida College of Medicine, Department of Medicine, Gainesville, FL, USA
| | - Lei Jin
- University of Florida College of Medicine, Department of Medicine, Gainesville, FL, USA
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9
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Checa J, Aran JM. Airway Redox Homeostasis and Inflammation Gone Awry: From Molecular Pathogenesis to Emerging Therapeutics in Respiratory Pathology. Int J Mol Sci 2020; 21:E9317. [PMID: 33297418 PMCID: PMC7731288 DOI: 10.3390/ijms21239317] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 12/05/2020] [Indexed: 02/06/2023] Open
Abstract
As aerobic organisms, we are continuously and throughout our lifetime subjected to an oxidizing atmosphere and, most often, to environmental threats. The lung is the internal organ most highly exposed to this milieu. Therefore, it has evolved to confront both oxidative stress induced by reactive oxygen species (ROS) and a variety of pollutants, pathogens, and allergens that promote inflammation and can harm the airways to different degrees. Indeed, an excess of ROS, generated intrinsically or from external sources, can imprint direct damage to key structural cell components (nucleic acids, sugars, lipids, and proteins) and indirectly perturb ROS-mediated signaling in lung epithelia, impairing its homeostasis. These early events complemented with efficient recognition of pathogen- or damage-associated recognition patterns by the airway resident cells alert the immune system, which mounts an inflammatory response to remove the hazards, including collateral dead cells and cellular debris, in an attempt to return to homeostatic conditions. Thus, any major or chronic dysregulation of the redox balance, the air-liquid interface, or defects in epithelial proteins impairing mucociliary clearance or other defense systems may lead to airway damage. Here, we review our understanding of the key role of oxidative stress and inflammation in respiratory pathology, and extensively report current and future trends in antioxidant and anti-inflammatory treatments focusing on the following major acute and chronic lung diseases: acute lung injury/respiratory distress syndrome, asthma, chronic obstructive pulmonary disease, pulmonary fibrosis, and cystic fibrosis.
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Affiliation(s)
| | - Josep M. Aran
- Immune-Inflammatory Processes and Gene Therapeutics Group, IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona, Spain;
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10
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Ohlstrom D, Hernandez-Lagunas L, Garcia AM, Allawzi A, Karimpour-Fard A, Sucharov CC, Nozik-Grayck E. MicroRNA regulation postbleomycin due to the R213G extracellular superoxide dismutase variant is predicted to suppress inflammatory and immune pathways. Physiol Genomics 2020; 52:245-254. [PMID: 32421439 DOI: 10.1152/physiolgenomics.00116.2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Oxidative stress is a key contributor to the development of dysregulated inflammation in acute lung injury (ALI). A naturally occurring single nucleotide polymorphism in the key extracellular antioxidant enzyme, extracellular superoxide dismutase (EC-SOD), results in an arginine to glycine substitution (R213G) that promotes resolution of inflammation and protection against bleomycin-induced ALI. Previously we found that mice harboring the R213G mutation in EC-SOD exhibit a transcriptomic profile consistent with a striking suppression of inflammatory and immune pathways 7 days postbleomycin. However, the alterations in noncoding regulatory RNAs in wild-type (WT) and R213G EC-SOD lungs have not been examined. Therefore, we used next-generation microRNA (miR) Sequencing of lung tissue to identify dysregulated miRs 7 days after bleomycin in WT and R213G mice. Differential expression analysis identified 92 WT and 235 R213G miRs uniquely dysregulated in their respective genotypes. Subsequent pathway analysis identified that these miRs were predicted to regulate approximately half of the differentially expressed genes previously identified. The gene targets of these altered miRs indicate suppression of immune and inflammatory pathways in the R213G mice versus activation of these pathways in WT mice. Triggering receptor expressed on myeloid cells 1 (TREM1) signaling was identified as the inflammatory pathway with the most striking difference between WT and R213G lungs. miR-486b-3p was identified as the most dysregulated miR predicted to regulate the TREM1 pathway. We validated the increase in TREM1 signaling using miR-486b-3p antagomir transfection. These findings indicate that differential miR regulation is predicted to regulate the inflammatory gene profile, contributing to the protection against ALI in R213G mice.
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Affiliation(s)
- Denis Ohlstrom
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, C Colorado
| | - Laura Hernandez-Lagunas
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, C Colorado
| | - Anastacia M Garcia
- Department of Pediatrics, Division of Cardiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Ayed Allawzi
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, C Colorado
| | - Anis Karimpour-Fard
- Department of Pharmacology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Carmen C Sucharov
- Department of Pediatrics, Division of Cardiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Eva Nozik-Grayck
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, C Colorado
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11
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Yan Z, Spaulding HR. Extracellular superoxide dismutase, a molecular transducer of health benefits of exercise. Redox Biol 2020; 32:101508. [PMID: 32220789 PMCID: PMC7109453 DOI: 10.1016/j.redox.2020.101508] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 02/06/2023] Open
Abstract
Extracellular superoxide dismutase (EcSOD) is the only extracellular scavenger of superoxide anion (O2.-) with unique binding capacity to cell surface and extracellular matrix through its heparin-binding domain. Enhanced EcSOD activity prevents oxidative stress and damage, which are fundamental in a variety of disease pathologies. In this review we will discuss the findings in humans and animal studies supporting the benefits of EcSOD induced by exercise training in reducing oxidative stress in various tissues. In particularly, we will highlight the importance of skeletal muscle EcSOD, which is induced by endurance exercise and redistributed through the circulation to the peripheral tissues, as a molecular transducer of exercise training to confer protection against oxidative stress and damage in various disease conditions.
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Affiliation(s)
- Zhen Yan
- Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA; Department of Medicine, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA; Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA; Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA.
| | - Hannah R Spaulding
- Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
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12
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Johnson AN, Harkema JR, Nelson AJ, Dickinson JD, Kalil J, Duryee MJ, Thiele GM, Kumar B, Singh AB, Gaurav R, Glover SC, Tang Y, Romberger DJ, Kielian T, Poole JA. MyD88 regulates a prolonged adaptation response to environmental dust exposure-induced lung disease. Respir Res 2020; 21:97. [PMID: 32321514 PMCID: PMC7178993 DOI: 10.1186/s12931-020-01362-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 04/14/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Environmental organic dust exposures enriched in Toll-like receptor (TLR) agonists can reduce allergic asthma development but are associated with occupational asthma and chronic bronchitis. The TLR adaptor protein myeloid differentiation factor88 (MyD88) is fundamental in regulating acute inflammatory responses to organic dust extract (ODE), yet its role in repetitive exposures is unknown and could inform future strategies. METHODS Wild-type (WT) and MyD88 knockout (KO) mice were exposed intranasally to ODE or saline daily for 3 weeks (repetitive exposure). Repetitively exposed animals were also subsequently rested with no treatments for 4 weeks followed by single rechallenge with saline/ODE. RESULTS Repetitive ODE exposure induced neutrophil influx and release of pro-inflammatory cytokines and chemokines were profoundly reduced in MyD88 KO mice. In comparison, ODE-induced cellular aggregates, B cells, mast cell infiltrates and serum IgE levels remained elevated in KO mice and mucous cell metaplasia was increased. Expression of ODE-induced tight junction protein(s) was also MyD88-dependent. Following recovery and then rechallenge with ODE, inflammatory mediators, but not neutrophil influx, was reduced in WT mice pretreated with ODE coincident with increased expression of IL-33 and IL-10, suggesting an adaptation response. Repetitively exposed MyD88 KO mice lacked inflammatory responsiveness upon ODE rechallenge. CONCLUSIONS MyD88 is essential in mediating the classic airway inflammatory response to repetitive ODE, but targeting MyD88 does not reduce mucous cell metaplasia, lymphocyte influx, or IgE responsiveness. TLR-enriched dust exposures induce a prolonged adaptation response that is largely MyD88-independent. These findings demonstrate the complex role of MyD88-dependent signaling during acute vs. chronic organic dust exposures.
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Affiliation(s)
- Amber N. Johnson
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA
| | - Jack R. Harkema
- grid.17088.360000 0001 2150 1785Pathobiology & Diagnostic Investigation, Institute for Integrative Toxicology, College of Veterinary Medicine, Michigan State University, East Lansing, MI USA
| | - Amy J. Nelson
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA
| | - John D. Dickinson
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA
| | - Julianna Kalil
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA
| | - Michael J. Duryee
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA ,Veterans Affairs Nebraska-Western Iowa Health Care System, Research Service, Omaha, NE USA
| | - Geoffrey M. Thiele
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA ,Veterans Affairs Nebraska-Western Iowa Health Care System, Research Service, Omaha, NE USA
| | - Balawant Kumar
- grid.266813.80000 0001 0666 4105Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE USA
| | - Amar B. Singh
- Veterans Affairs Nebraska-Western Iowa Health Care System, Research Service, Omaha, NE USA ,grid.266813.80000 0001 0666 4105Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE USA
| | - Rohit Gaurav
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA
| | - Sarah C. Glover
- grid.410721.10000 0004 1937 0407Department of Medicine, University of Mississippi Medical Center, Jackson, MS USA
| | - Ying Tang
- grid.15276.370000 0004 1936 8091Department of Medicine, University of Florida, Gainesville, FL USA
| | - Debra J. Romberger
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA ,Veterans Affairs Nebraska-Western Iowa Health Care System, Research Service, Omaha, NE USA
| | - Tammy Kielian
- grid.266813.80000 0001 0666 4105Department of Microbiology and Pathology, University of Nebraska Medical Center, Omaha, NE USA
| | - Jill A. Poole
- grid.266813.80000 0001 0666 4105Department of Internal Medicine, University of Nebraska Medical Center, 985990 Nebraska Medical Center, Omaha, NE 68198-5990 USA
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13
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Allawzi A, McDermott I, Delaney C, Nguyen K, Banimostafa L, Trumpie A, Hernandez-Lagunas L, Riemondy K, Gillen A, Hesselberth J, El Kasmi K, Sucharov CC, Janssen WJ, Stenmark K, Bowler R, Nozik-Grayck E. Redistribution of EC-SOD resolves bleomycin-induced inflammation via increased apoptosis of recruited alveolar macrophages. FASEB J 2019; 33:13465-13475. [PMID: 31560857 PMCID: PMC6894081 DOI: 10.1096/fj.201901038rr] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 08/26/2019] [Indexed: 01/16/2023]
Abstract
A human single nucleotide polymorphism (SNP) in the matrix-binding domain of extracellular superoxide dismutase (EC-SOD), with arginine to glycine substitution at position 213 (R213G), redistributes EC-SOD from the matrix into extracellular fluids. We reported that, following bleomycin (bleo), knockin mice harboring the human R213G SNP (R213G mice) exhibit enhanced resolution of inflammation and protection against fibrosis, compared with wild-type (WT) littermates. In this study, we tested the hypothesis that the EC-SOD R213G SNP promotes resolution via accelerated apoptosis of recruited alveolar macrophage (AM). RNA sequencing and Ingenuity Pathway Analysis 7 d postbleo in recruited AM implicated increased apoptosis and blunted inflammatory responses in the R213G strain exhibiting accelerated resolution. We validated that the percentage of apoptosis was significantly elevated in R213G recruited AM vs. WT at 3 and 7 d postbleo in vivo. Recruited AM numbers were also significantly decreased in R213G mice vs. WT at 3 and 7 d postbleo. ChaC glutathione-specific γ-glutamylcyclotransferase 1 (Chac1), a proapoptotic γ-glutamyl cyclotransferase that depletes glutathione, was increased in the R213G recruited AM. Overexpression of Chac1 in vitro induced apoptosis of macrophages and was blocked by administration of cell-permeable glutathione. In summary, we provide new evidence that redistributed EC-SOD accelerates the resolution of inflammation through redox-regulated mechanisms that increase recruited AM apoptosis.-Allawzi, A., McDermott, I., Delaney, C., Nguyen, K., Banimostafa, L., Trumpie, A., Hernandez-Lagunas, L., Riemondy, K., Gillen, A., Hesselberth, J., El Kasmi, K., Sucharov, C. C., Janssen, W. J., Stenmark, K., Bowler, R., Nozik-Grayck, E. Redistribution of EC-SOD resolves bleomycin-induced inflammation via increased apoptosis of recruited alveolar macrophages.
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Affiliation(s)
- Ayed Allawzi
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Ivy McDermott
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Cassidy Delaney
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Kianna Nguyen
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Laith Banimostafa
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Ashley Trumpie
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Laura Hernandez-Lagunas
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Kent Riemondy
- RNA Bioscience Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Austin Gillen
- RNA Bioscience Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Jay Hesselberth
- RNA Bioscience Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Karim El Kasmi
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Boehringer Ingelheim Pharma, Biberach, Germany
| | - Carmen C. Sucharov
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA; and
| | | | - Kurt Stenmark
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Russell Bowler
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Eva Nozik-Grayck
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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14
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Anti-oxidative effects of superoxide dismutase 3 on inflammatory diseases. J Mol Med (Berl) 2019; 98:59-69. [PMID: 31724066 DOI: 10.1007/s00109-019-01845-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/16/2019] [Accepted: 10/16/2019] [Indexed: 01/16/2023]
Abstract
Free radicals and other oxidants are critical determinants of the cellular signaling pathways involved in the pathogenesis of several human diseases including inflammatory diseases. Numerous studies have demonstrated the protective effects of antioxidant enzymes during inflammation by elimination of free radicals. The superoxide dismutase (SOD), an antioxidant enzyme, plays an essential pathogenic role in the inflammatory diseases by not only catalyzing the conversion of the superoxide to hydrogen peroxide and oxygen but also affecting immune responses. There are three distinct isoforms of SOD, which distribute in different cellular compartments such as cytosolic SOD1, mitochondrial SOD2, and extracellular SOD3. Many studies have investigated the anti-oxidative effects of SOD3 in the inflammatory diseases. Herein, in this review, we focus on the current understanding of SOD3 as a therapeutic protein in inflammatory diseases such as skin, autoimmune, lung, and cardiovascular inflammatory diseases. Moreover, the mechanism(s) by which SOD3 modulates immune responses and signal initiation in the pathogenesis of the diseases will be further discussed.
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15
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Mouradian GC, Alvarez-Argote S, Gorzek R, Thuku G, Michkalkiewicz T, Wong-Riley MTT, Konduri GG, Hodges MR. Acute and chronic changes in the control of breathing in a rat model of bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2019; 316:L506-L518. [PMID: 30652496 PMCID: PMC6459293 DOI: 10.1152/ajplung.00086.2018] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 01/09/2019] [Accepted: 01/14/2019] [Indexed: 12/15/2022] Open
Abstract
Infants born very prematurely (<28 wk gestation) have immature lungs and often require supplemental oxygen. However, long-term hyperoxia exposure can arrest lung development, leading to bronchopulmonary dysplasia (BPD), which increases acute and long-term respiratory morbidity and mortality. The neural mechanisms controlling breathing are highly plastic during development. Whether the ventilatory control system adapts to pulmonary disease associated with hyperoxia exposure in infancy remains unclear. Here, we assessed potential age-dependent adaptations in the control of breathing in an established rat model of BPD associated with hyperoxia. Hyperoxia exposure ( FI O 2 ; 0.9 from 0 to 10 days of life) led to a BPD-like lung phenotype, including sustained reductions in alveolar surface area and counts, and modest increases in airway resistance. Hyperoxia exposure also led to chronic increases in room air and acute hypoxic minute ventilation (V̇e) and age-dependent changes in breath-to-breath variability. Hyperoxia-exposed rats had normal oxygen saturation ( S p O 2 ) in room air but greater reductions in S p O 2 during acute hypoxia (12% O2) that were likely due to lung injury. Moreover, acute ventilatory sensitivity was reduced at P12 to P14. Perinatal hyperoxia led to greater glial fibrillary acidic protein expression and an increase in neuron counts within six of eight or one of eight key brainstem regions, respectively, controlling breathing, suggesting astrocytic expansion. In conclusion, perinatal hyperoxia in rats induced a BPD-like phenotype and age-dependent adaptations in V̇e that may be mediated through changes to the neural architecture of the ventilatory control system. Our results suggest chronically altered ventilatory control in BPD.
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Affiliation(s)
- Gary C Mouradian
- Department of Physiology, Medical College of Wisconsin , Milwaukee, Wisconsin
| | | | - Ryan Gorzek
- Department of Physiology, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Gabriel Thuku
- Department of Physiology, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Teresa Michkalkiewicz
- Department of Pediatrics, Medical College of Wisconsin , Milwaukee, Wisconsin
- Children's Research Institute, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Margaret T T Wong-Riley
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Girija Ganesh Konduri
- Department of Pediatrics, Medical College of Wisconsin , Milwaukee, Wisconsin
- Children's Research Institute, Medical College of Wisconsin , Milwaukee, Wisconsin
| | - Matthew R Hodges
- Department of Physiology, Medical College of Wisconsin , Milwaukee, Wisconsin
- Neuroscience Research Center, Medical College of Wisconsin , Milwaukee, Wisconsin
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16
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Allawzi A, Elajaili H, Redente EF, Nozik-Grayck E. Oxidative Toxicology of Bleomycin: Role of the Extracellular Redox Environment. CURRENT OPINION IN TOXICOLOGY 2019; 13:68-73. [PMID: 31289762 PMCID: PMC6615752 DOI: 10.1016/j.cotox.2018.08.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Bleomycin is a commonly used cancer therapeutic that is associated with oxidative stress leading to pulmonary toxicity. Bleomycin has been used in animal studies to model pulmonary fibrosis, acute respiratory distress syndrome, and pulmonary hypertension secondary to interstitial lung disease. The toxicity with bleomycin is initiated by direct oxidative damage, which then leads to subsequent inflammation and fibrosis mediated by generation of both extracellular ROS and intracellular ROS. While most studies focus on the intracellular ROS implicated in TGFβ signaling and fibrosis, the changes in the extracellular redox environment, particularly with the initiation of early inflammation, is also critical to the pathogenesis of bleomycin induced injury and fibrosis. In this review, we focus on the role of extracellular redox environment in bleomycin toxicity, with attention to the generation of extracellular ROS, alterations in the redox state of extracellular thiols, and the central role of the extracellular isoform of superoxide dismutase in the development of bleomycin induced injury and fibrosis.
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Affiliation(s)
- Ayed Allawzi
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO
| | - Hanan Elajaili
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO
| | - Elizabeth F. Redente
- Program in Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO
- Department of Research, Veterans Affairs Eastern Colorado Health Care System, Denver, CO
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO
| | - Eva Nozik-Grayck
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO
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17
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Elajaili HB, Hernandez-Lagunas L, Ranguelova K, Dikalov S, Nozik-Grayck E. Use of Electron Paramagnetic Resonance in Biological Samples at Ambient Temperature and 77 K. J Vis Exp 2019. [PMID: 30688300 DOI: 10.3791/58461] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The accurate and specific detection of reactive oxygen species (ROS) in different cellular and tissue compartments is essential to the study of redox-regulated signaling in biological settings. Electron paramagnetic resonance spectroscopy (EPR) is the only direct method to assess free radicals unambiguously. Its advantage is that it detects physiologic levels of specific species with a high specificity, but it does require specialized technology, careful sample preparation, and appropriate controls to ensure accurate interpretation of the data. Cyclic hydroxylamine spin probes react selectively with superoxide or other radicals to generate a nitroxide signal that can be quantified by EPR spectroscopy. Cell-permeable spin probes and spin probes designed to accumulate rapidly in the mitochondria allow for the determination of superoxide concentration in different cellular compartments. In cultured cells, the use of cell permeable 1-hydroxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine (CMH) along with and without cell-impermeable superoxide dismutase (SOD) pretreatment, or use of cell-permeable PEG-SOD, allows for the differentiation of extracellular from cytosolic superoxide. The mitochondrial 1-hydroxy-4-[2-triphenylphosphonio)-acetamido]-2,2,6,6-tetramethyl-piperidine,1-hydroxy-2,2,6,6-tetramethyl-4-[2-(triphenylphosphonio)acetamido] piperidinium dichloride (mito-TEMPO-H) allows for measurement of mitochondrial ROS (predominantly superoxide). Spin probes and EPR spectroscopy can also be applied to in vivo models. Superoxide can be detected in extracellular fluids such as blood and alveolar fluid, as well as tissues such as lung tissue. Several methods are presented to process and store tissue for EPR measurements and deliver intravenous 1-hydroxy-3-carboxy-2,2,5,5-tetramethylpyrrolidine (CPH) spin probe in vivo. While measurements can be performed at room temperature, samples obtained from in vitro and in vivo models can also be stored at -80 °C and analyzed by EPR at 77 K. The samples can be stored in specialized tubing stable at -80 °C and run at 77 K to enable a practical, efficient, and reproducible method that facilitates storing and transferring samples.
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Affiliation(s)
- Hanan B Elajaili
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus
| | - Laura Hernandez-Lagunas
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus
| | | | - Sergey Dikalov
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University Medical Center
| | - Eva Nozik-Grayck
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado Anschutz Medical Campus;
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18
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Zelko IN, Zhu J, Roman J. Role of SOD3 in silica-related lung fibrosis and pulmonary vascular remodeling. Respir Res 2018; 19:221. [PMID: 30453980 PMCID: PMC6245633 DOI: 10.1186/s12931-018-0933-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 11/07/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Work-place exposure to silica dust may lead to progressive lung inflammation culminating in the development of silicosis, an irreversible condition that can be complicated by onset of pulmonary hypertension (PH). The molecular mechanisms leading to the development of PH and lung fibrosis in response to silica are not well understood. Oxidant/antioxidant imbalance in the lung may promote fibroproliferation and vascular smooth muscle proliferation, ultimately leading to the development of PH. Herein, we analyze the development of PH and lung fibrosis in mice deficient in extracellular superoxide dismutase (SOD3), an enzyme with anti-oxidant activity. METHODS PH and silicosis were induced in wild-type and Sod3-/- mice through intratracheal injection of crystalline silica at dose 0.4 g/kg. Pulmonary hypertension and lung fibrosis were characterized by changes in right ventricular systolic pressure (RVSP) and collagen deposition 28 days following silica injections. Vascular remodeling was analyzed using immunohistochemistry and morphometric analysis. The expression of genes were analyzed using qRT-PCR and Western blot. RESULTS C57BL6 mice exposed to silica showed attenuated expression of Sod3 in the lung suggesting a protective role for Sod3. Consistent with this, Sod3-/- mice developed more severe fibrotic inflammatory nodules with increased collagen deposition. Furthermore, the expression of genes involved in tissue remodeling (Timp1), fibrotic lesion formation (Fsp1) and inflammatory response (Mcp1) were significantly elevated in Sod3-/- mice compared to Sod3+/+ mice treated with silica. Infiltration of neutrophils and activated macrophages into affected lung was significantly higher in Sod3 deficient mice. In addition, silica produced more profound effects on elevation of RVSP in Sod3-/- compared to wild-type littermate. Increase in RVSP was concomitant with hypertrophy of pulmonary arteries located in silicotic nodules of both mouse strains, however, vascular remodeling in unaffected areas of lung was detected only in Sod3-/- mice. CONCLUSIONS Our data suggest that Sod3 and extracellular oxidative stress may play an important role in the development of pneumoconiosis and pulmonary vascular remodeling following exposure to environmental and occupational silica.
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Affiliation(s)
- Igor N Zelko
- Department of Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Louisville, 505 S. Hancock Street, CTR Bldg., room 524, Louisville, KY, 40202, USA.
- Department of Biochemistry and Molecular Genetics, University of Louisville, 505 S. Hancock Street, CTR Bldg., room 524, Louisville, KY, 40202, USA.
| | - Jianxin Zhu
- Department of Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Louisville, 505 S. Hancock Street, CTR Bldg., room 524, Louisville, KY, 40202, USA
| | - Jesse Roman
- Department of Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of Louisville, 505 S. Hancock Street, CTR Bldg., room 524, Louisville, KY, 40202, USA
- Department of Pharmacology and Toxicology, University of Louisville Health Sciences Center, Louisville, KY, 40202, USA
- Robley Rex VA Medical Center, Louisville, KY, 40202, USA
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19
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Good RJ, Hernandez-Lagunas L, Allawzi A, Maltzahn JK, Vohwinkel CU, Upadhyay AK, Kompella UB, Birukov KG, Carpenter TC, Sucharov CC, Nozik-Grayck E. MicroRNA dysregulation in lung injury: the role of the miR-26a/EphA2 axis in regulation of endothelial permeability. Am J Physiol Lung Cell Mol Physiol 2018; 315:L584-L594. [PMID: 30024304 PMCID: PMC6230876 DOI: 10.1152/ajplung.00073.2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
MicroRNAs (miRNAs) are noncoding RNAs that regulate gene expression in many diseases, although the contribution of miRNAs to the pathophysiology of lung injury remains obscure. We hypothesized that dysregulation of miRNA expression drives the changes in key genes implicated in the development of lung injury. To test our hypothesis, we utilized a model of lung injury induced early after administration of intratracheal bleomycin (0.1 U). Wild-type mice were treated with bleomycin or PBS, and lungs were collected at 4 or 7 days. A profile of lung miRNA was determined by miRNA array and confirmed by quantitative PCR and flow cytometry. Lung miR-26a was significantly decreased 7 days after bleomycin injury, and, on the basis of enrichment of predicted gene targets, it was identified as a putative regulator of cell adhesion, including the gene targets EphA2, KDR, and ROCK1, important in altered barrier function. Lung EphA2 mRNA, and protein increased in the bleomycin-injured lung. We further explored the miR-26a/EphA2 axis in vitro using human lung microvascular endothelial cells (HMVEC-L). Cells were transfected with miR-26a mimic and inhibitor, and expression of gene targets and permeability was measured. miR-26a regulated expression of EphA2 but not KDR or ROCK1. Additionally, miR-26a inhibition increased HMVEC-L permeability, and the disrupted barrier integrity due to miR-26a was blocked by EphA2 knockdown, shown by VE-cadherin staining. Our data suggest that miR-26a is an important epigenetic regulator of EphA2 expression in the pulmonary endothelium. As such, miR-26a may represent a novel therapeutic target in lung injury by mitigating EphA2-mediated changes in permeability.
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Affiliation(s)
- Ryan J. Good
- 1Cardiovascular Pulmonary Research Laboratories, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado,2Pediatric Critical Care Medicine, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Laura Hernandez-Lagunas
- 1Cardiovascular Pulmonary Research Laboratories, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado,2Pediatric Critical Care Medicine, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Ayed Allawzi
- 1Cardiovascular Pulmonary Research Laboratories, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado,2Pediatric Critical Care Medicine, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Joanne K. Maltzahn
- 1Cardiovascular Pulmonary Research Laboratories, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado,2Pediatric Critical Care Medicine, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Christine U. Vohwinkel
- 1Cardiovascular Pulmonary Research Laboratories, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado,2Pediatric Critical Care Medicine, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Arun K. Upadhyay
- 4Department of Pharmaceutical Sciences, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Uday B. Kompella
- 4Department of Pharmaceutical Sciences, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Konstantin G. Birukov
- 5Department of Anesthesiology and Medicine, University of Maryland, Baltimore, Maryland
| | - Todd C. Carpenter
- 1Cardiovascular Pulmonary Research Laboratories, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Carmen C. Sucharov
- 3Cardiology, Department of Pediatrics and Medicine, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
| | - Eva Nozik-Grayck
- 1Cardiovascular Pulmonary Research Laboratories, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado,2Pediatric Critical Care Medicine, University of Colorado Denver Anschutz Medical Center, Aurora, Colorado
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20
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Garcia AM, Allawzi A, Tatman P, Hernandez-Lagunas L, Swain K, Mouradian G, Bowler R, Karimpour-Fard A, Sucharov CC, Nozik-Grayck E. R213G polymorphism in SOD3 protects against bleomycin-induced inflammation and attenuates induction of proinflammatory pathways. Physiol Genomics 2018; 50:807-816. [PMID: 30004839 DOI: 10.1152/physiolgenomics.00053.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Extracellular superoxide dismutase (EC-SOD), one of three mammalian SOD isoforms, is the sole extracellular enzymatic defense against superoxide. A known human single nucleotide polymorphism (SNP) in the matrix-binding domain of EC-SOD characterized by an arginine-to-glycine substitution at position 213 (R213G) redistributes EC-SOD from the matrix into extracellular fluids. We previously reported that knock-in mice harboring the human R213G SNP (R213G mice) exhibited enhanced resolution of inflammation with subsequent protection against fibrosis following bleomycin treatment compared with wild-type (WT) littermates. Herein we set out to determine the underlying pathways with RNA-Seq analysis of WT and R213G lungs 7 days post-PBS and bleomycin. RNA-Seq analysis uncovered significant differential gene expression changes induced in WT and R213G strains in response to bleomycin. Ingenuity Pathways Analysis was used to predict differentially regulated up- and downstream processes based on transcriptional changes. Most prominent was the induction of inflammatory and immune responses in WT mice, which were suppressed in the R213G mice. Specifically, PKC signaling in T lymphocytes, IL-6, and NFΚB signaling were opposed in WT mice when compared with R213G. Several upstream regulators such as IFNγ, IRF3, and IKBKG were implicated in the divergent responses between WT and R213G mice. Our data suggest that the redistributed EC-SOD due to the R213G SNP attenuates the dysregulated inflammatory responses observed in WT mice. We speculate that redistributed EC-SOD protects against dysregulated alveolar inflammation via reprogramming of recruited immune cells toward a proresolving state.
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Affiliation(s)
- Anastacia M Garcia
- Department of Pediatrics, Division of Cardiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Ayed Allawzi
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Philip Tatman
- Medical Scientist Training Program, University of Colorado, Anschutz Medical Campus, Aurora, Colorado.,Department of Medicine, Division of Cardiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Laura Hernandez-Lagunas
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Kalin Swain
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Gary Mouradian
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Russell Bowler
- Department of Medicine, National Jewish Health , Denver, Colorado
| | - Anis Karimpour-Fard
- Department of Pharmacology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Carmen C Sucharov
- Department of Medicine, Division of Cardiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Eva Nozik-Grayck
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
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21
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Sherlock LG, Trumpie A, Hernandez-Lagunas L, McKenna S, Fisher S, Bowler R, Wright CJ, Delaney C, Nozik-Grayck E. Redistribution of Extracellular Superoxide Dismutase Causes Neonatal Pulmonary Vascular Remodeling and PH but Protects Against Experimental Bronchopulmonary Dysplasia. Antioxidants (Basel) 2018; 7:antiox7030042. [PMID: 29538340 PMCID: PMC5874528 DOI: 10.3390/antiox7030042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 03/03/2018] [Accepted: 03/13/2018] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND A naturally occurring single nucleotide polymorphism (SNP), (R213G), in extracellular superoxide dismutase (SOD3), decreases SOD3 matrix binding affinity. Humans and mature mice expressing the R213G SNP exhibit increased cardiovascular disease but decreased lung disease. The impact of this SNP on the neonatal lung at baseline or with injury is unknown. METHODS Wild type and homozygous R213G mice were injected with intraperitoneal bleomycin or phosphate buffered saline (PBS) three times weekly for three weeks and tissue harvested at 22 days of life. Vascular and alveolar development were evaluated by morphometric analysis and immunostaining of lung sections. Pulmonary hypertension (PH) was assessed by right ventricular hypertrophy (RVH). Lung protein expression for superoxide dismutase (SOD) isoforms, catalase, vascular endothelial growth factor receptor 2 (VEGFR2), endothelial nitric oxide synthase (eNOS) and guanosine triphosphate cyclohydrolase-1 (GTPCH-1) was evaluated by western blot. SOD activity and SOD3 expression were measured in serum. RESULTS In R213G mice, SOD3 lung protein expression decreased, serum SOD3 protein expression and SOD serum activity increased compared to wild type (WT) mice. Under control conditions, R213G mice developed pulmonary vascular remodeling (decreased vessel density and increased medial wall thickness) and PH; alveolar development was similar between strains. After bleomycin injury, in contrast to WT, R213G mice were protected from impaired alveolar development and their vascular abnormalities and PH did not worsen. Bleomycin decreased VEGFR2 and GTPCH-1 only in WT mice. CONCLUSION R213G neonatal mice demonstrate impaired vascular development and PH at baseline without alveolar simplification, yet are protected from bleomycin induced lung injury and worsening of pulmonary vascular remodeling and PH. These results show that vessel bound SOD3 is essential in normal pulmonary vascular development, and increased serum SOD3 expression and SOD activity prevent lung injury in experimental bronchopulmonary dysplasia (BPD) and PH.
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Affiliation(s)
- Laurie G Sherlock
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Ashley Trumpie
- Cardiovascular Pulmonary Research Laboratories, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Laura Hernandez-Lagunas
- Cardiovascular Pulmonary Research Laboratories, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Sarah McKenna
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Susan Fisher
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Russell Bowler
- Department of Medicine, National Jewish Health, Denver, CO 80206, USA.
| | - Clyde J Wright
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Cassidy Delaney
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Eva Nozik-Grayck
- Cardiovascular Pulmonary Research Laboratories, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
- Pediatric Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
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22
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FOXO1/3: Potential suppressors of fibrosis. Ageing Res Rev 2018; 41:42-52. [PMID: 29138094 DOI: 10.1016/j.arr.2017.11.002] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/07/2017] [Accepted: 11/08/2017] [Indexed: 02/06/2023]
Abstract
Fibrosis is a universally age-related disease that involves nearly all organs. It is typically initiated by organic injury and eventually results in organ failure. There are still few effective therapeutic strategy targets for fibrogenesis. Forkhead box proteins O1 and O3 (FOXO1/3) have been shown to have favorable inhibitory effects on fibroblast activation and subsequent extracellular matrix production and can ameliorate fibrosis levels in numerous organs, including the heart, liver, lung, and kidney; they are therefore promising targets for anti-fibrosis therapy. Moreover, we can develop appropriate strategies to make the best use of FOXO1/3's anti-fibrosis properties. The information reviewed here should be significant for understanding the roles of FOXO1/3 in fibrosis and should contribute to the design of further studies related to FOXO1/3 and the fibrotic response and shed light on a potential treatment for fibrosis.
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23
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On the Origin of Superoxide Dismutase: An Evolutionary Perspective of Superoxide-Mediated Redox Signaling. Antioxidants (Basel) 2017; 6:antiox6040082. [PMID: 29084153 PMCID: PMC5745492 DOI: 10.3390/antiox6040082] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 10/23/2017] [Accepted: 10/27/2017] [Indexed: 12/15/2022] Open
Abstract
The field of free radical biology originated with the discovery of superoxide dismutase (SOD) in 1969. Over the last 5 decades, a plethora of research has been performed in species ranging from bacteria to mammals that has elucidated the molecular reaction, subcellular location, and specific isoforms of SOD. However, while humans have only begun to study this class of enzymes over the past 50 years, it has been estimated that these enzymes have existed for billions of years, and may be some of the original enzymes found in primitive life. As life evolved over this expanse of time, these enzymes have taken on new and different functional roles potentially in contrast to how they were originally derived. Herein, examination of the evolutionary history of these enzymes provides both an explanation and further inquiries into the modern-day role of SOD in physiology and disease.
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24
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Gaurav R, Varasteh JT, Weaver MR, Jacobson SR, Hernandez-Lagunas L, Liu Q, Nozik-Grayck E, Chu HW, Alam R, Nordestgaard BG, Kobylecki CJ, Afzal S, Chupp GL, Bowler RP. The R213G polymorphism in SOD3 protects against allergic airway inflammation. JCI Insight 2017; 2:95072. [PMID: 28878123 DOI: 10.1172/jci.insight.95072] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/03/2017] [Indexed: 01/04/2023] Open
Abstract
Oxidative stress is important in the pathogenesis of allergic asthma. Extracellular superoxide dismutase (EC-SOD; SOD3) is the major antioxidant in lungs, but its role in allergic asthma is unknown. Here we report that asthmatics have increased SOD3 transcript levels in sputum and that a single nucleotide polymorphism (SNP) in SOD3 (R213G; rs1799895) changes lung distribution of EC-SOD, and decreases likelihood of asthma-related symptoms. Knockin mice analogous to the human R213G SNP had lower airway hyperresponsiveness, inflammation, and mucus hypersecretion with decreased interleukin-33 (IL-33) in bronchoalveolar lavage fluid and reduced type II innate lymphoid cells (ILC2s) in lungs. SOD mimetic (Mn (III) tetrakis (N-ethylpyridinium-2-yl) porphyrin) attenuated Alternaria-induced expression of IL-33 and IL-8 release in BEAS-2B cells. These results suggest that R213G SNP potentially benefits its carriers by resulting in high EC-SOD in airway-lining fluid, which ameliorates allergic airway inflammation by dampening the innate immune response, including IL-33/ST2-mediated changes in ILC2s.
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Affiliation(s)
- Rohit Gaurav
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Jason T Varasteh
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Michael R Weaver
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Sean R Jacobson
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Laura Hernandez-Lagunas
- Cardiovascular Pulmonary Research Laboratories and Department of Pediatrics, University of Colorado, Aurora, Colorado, USA
| | - Qing Liu
- Department of Internal Medicine, Yale University, New Haven, Connecticut, USA
| | - Eva Nozik-Grayck
- Cardiovascular Pulmonary Research Laboratories and Department of Pediatrics, University of Colorado, Aurora, Colorado, USA
| | - Hong Wei Chu
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Rafeul Alam
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Børge G Nordestgaard
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, and.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Shoaib Afzal
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, and.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Geoffrey L Chupp
- Department of Internal Medicine, Yale University, New Haven, Connecticut, USA
| | - Russell P Bowler
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
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25
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Katsarou MS, Giakoumaki M, Papadimitriou A, Demertzis N, Androutsopoulos V, Drakoulis N. Genetically driven antioxidant capacity in a Caucasian Southeastern European population. Mech Ageing Dev 2017; 172:1-5. [PMID: 28844971 DOI: 10.1016/j.mad.2017.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/19/2017] [Indexed: 01/31/2023]
Abstract
Previous studies have underlined the function of specific xenobiotic metabolizing phase-I or phase-II enzymes and endogenous antioxidant-related enzymes in the reduction and/or progression of oxidative stress and consequently the incidence of several diseases. In the present study, 10 polymorphic variants (rs4880, rs1799895, rs660339, rs1050450, rs1001179, rs28665122, rs1695, rs1138272, rs1051740 and rs2234922) were investigated in 1132 individuals of a Caucasian Southeastern European population. The frequency distribution of alleles and genotypes was compared to data of European (Northern, Central, Northwestern and Southwestern) and Global populations, extracted from the ensembl genome browser. The allele frequencies in the case of rs1051740 were similar to the frequencies noted in the global population. The majority of the present study allelic polymorphisms showed similar frequency distribution to those of the European or the Global populations (0.88≤OR≤1.14). The rs1051740 polymorphism demonstrated similar to the Global population frequencies (OR=1.09). In conclusion, observed distributions of the polymorphisms studied in the Southeastern population demonstrate a positive impact (rs4880, rs1799895, rs660339, rs28665122) and a negative impact (rs1050450, rs1138272, rs109179, rs1695) against oxidative stress when compared to other population groups.
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Affiliation(s)
- Martha-Spyridoula Katsarou
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Maria Giakoumaki
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Andriana Papadimitriou
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Nikolaos Demertzis
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Vasileios Androutsopoulos
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece
| | - Nikolaos Drakoulis
- Research Group of Clinical Pharmacology and Pharmacogenomics, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15771, Athens, Greece.
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Advanced Role of Neutrophils in Common Respiratory Diseases. J Immunol Res 2017; 2017:6710278. [PMID: 28589151 PMCID: PMC5447318 DOI: 10.1155/2017/6710278] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/22/2017] [Accepted: 04/16/2017] [Indexed: 12/18/2022] Open
Abstract
Respiratory diseases, always being a threat towards the health of people all over the world, are most tightly associated with immune system. Neutrophils serve as an important component of immune defense barrier linking innate and adaptive immunity. They participate in the clearance of exogenous pathogens and endogenous cell debris and play an essential role in the pathogenesis of many respiratory diseases. However, the pathological mechanism of neutrophils remains complex and obscure. The traditional roles of neutrophils in severe asthma, chronic obstructive pulmonary diseases (COPD), pneumonia, lung cancer, pulmonary fibrosis, bronchitis, and bronchiolitis had already been reviewed. With the development of scientific research, the involvement of neutrophils in respiratory diseases is being brought to light with emerging data on neutrophil subsets, trafficking, and cell death mechanism (e.g., NETosis, apoptosis) in diseases. We reviewed all these recent studies here to provide you with the latest advances about the role of neutrophils in respiratory diseases.
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Jun S, Dory L. Allele-Specific Effects on Extracellular Superoxide Dismutase Synthesis and Secretion. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/jbise.2017.104011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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