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Rao T, Zhou Y, Chen C, Chen J, Zhang J, Lin W, Jia D. Recent progress in neonatal hyperoxic lung injury. Pediatr Pulmonol 2024. [PMID: 38742254 DOI: 10.1002/ppul.27062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/28/2024] [Accepted: 05/04/2024] [Indexed: 05/16/2024]
Abstract
With the progress in neonatal intensive care, there has been an increase in the survival rates of premature infants. However, this has also led to an increased incidence of neonatal hyperoxia lung injury and bronchopulmonary dysplasia (BPD), whose pathogenesis is believed to be influenced by various prenatal and postnatal factors, although the exact mechanisms remain unclear. Recent studies suggest that multiple mechanisms might be involved in neonatal hyperoxic lung injury and BPD, with sex also possibly playing an important role, and numerous drugs have been proposed and shown promise for improving the treatment outcomes of hyperoxic lung injury. Therefore, this paper aims to analyze and summarize sex differences in neonatal hyperoxic lung injury, potential pathogenesis and treatment progress to provide new ideas for basic and clinical research in this field.
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Affiliation(s)
- Tian Rao
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yiyang Zhou
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Chizhang Chen
- Department of Clinical Medicine, Chinese Medicine Hospital of Pingyang, Wenzhou, Zhejiang, China
| | - Jiayi Chen
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jie Zhang
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Wei Lin
- Department of Pediatrics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Danyun Jia
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, Zhejiang, China
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Yang B, Lin Y, Huang Y, Shen YQ, Chen Q. Thioredoxin (Trx): A redox target and modulator of cellular senescence and aging-related diseases. Redox Biol 2024; 70:103032. [PMID: 38232457 PMCID: PMC10827563 DOI: 10.1016/j.redox.2024.103032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 12/03/2023] [Accepted: 01/04/2024] [Indexed: 01/19/2024] Open
Abstract
Thioredoxin (Trx) is a compact redox-regulatory protein that modulates cellular redox state by reducing oxidized proteins. Trx exhibits dual functionality as an antioxidant and a cofactor for diverse enzymes and transcription factors, thereby exerting influence over their activity and function. Trx has emerged as a pivotal biomarker for various diseases, particularly those associated with oxidative stress, inflammation, and aging. Recent clinical investigations have underscored the significance of Trx in disease diagnosis, treatment, and mechanistic elucidation. Despite its paramount importance, the intricate interplay between Trx and cellular senescence-a condition characterized by irreversible growth arrest induced by multiple aging stimuli-remains inadequately understood. In this review, our objective is to present a comprehensive and up-to-date overview of the structure and function of Trx, its involvement in redox signaling pathways and cellular senescence, its association with aging and age-related diseases, as well as its potential as a therapeutic target. Our review aims to elucidate the novel and extensive role of Trx in senescence while highlighting its implications for aging and age-related diseases.
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Affiliation(s)
- Bowen Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Yumeng Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Yibo Huang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Ying-Qiang Shen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
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Yang M, Chen Y, Huang X, Shen F, Meng Y. ETS1 Ameliorates Hyperoxia-Induced Bronchopulmonary Dysplasia in Mice by Activating Nrf2/HO-1 Mediated Ferroptosis. Lung 2023; 201:425-441. [PMID: 37490064 PMCID: PMC10444662 DOI: 10.1007/s00408-023-00639-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 07/13/2023] [Indexed: 07/26/2023]
Abstract
PURPOSE Bronchopulmonary dysplasia (BPD) is associated with hyperoxia-induced oxidative stress-associated ferroptosis. This study examined the effect of E26 oncogene homolog 1 (ETS1) on oxidative stress-associated ferroptosis in BPD. METHODS Hyperoxia-induced A549 cells and neonatal mice were used to establish BPD models. The effects of ETS1 on hyperoxia-induced ferroptosis-like changes in A549 cells were investigated by overexpression of ETS1 plasmid transfection and erastin treatment. Glucose consumption, lactate production, and NADPH levels were assessed by the glucose, lactate, and NADP+/NADPH assay kits, respectively. The potential regulatory relationship between ETS1 and Nrf2/HO-1 was examined by treating hyperoxia-induced A549 cells with the Nrf2 inhibitor ML385. ETS1 effect on the Nrf2 promoter was explored by dual-luciferase reporter and chromatin immunoprecipitation assay. The effect of ETS1 on the symptoms of BPD mice was examined by injecting an adenovirus overexpressing ETS1. RESULTS ETS1 overexpression increased hyperoxia-induced cell viability, glucose consumption, lactate production, and NADPH levels and reduced inflammation and apoptosis in A549 cells. In animal experiments, ETS1 overexpression prevented weight loss, airway enlargement, and reductions in radial alveolar counts in BPD mice, while reducing the mean linear intercept, mean alveolar diameter and inflammation. ETS1 overexpression suppressed PTGS2 and CHAC1 expression, reduced ROS, MDA and ferrous iron (Fe2+) production and increased GSH levels in hyperoxia-induced A549 cells and BPD mice. In addition, ETS1 can bind to the Nrf2 promoter region and thus promote Nrf2 transcription. ETS1 overexpression increased the mRNA and protein levels of Nrf2, HO-1, xCT, and GPX4 in hyperoxia-induced A549 cells and BPD mice. In hyperoxia-induced A549 cells, erastin and ML385 treatment abolished the effect of ETS1 overexpression. CONCLUSION ETS1 is important in oxidative stress-related ferroptosis in a hyperoxia-induced BPD model, and the effect is partially mediated by the Nrf2/HO-1 axis.
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Affiliation(s)
- Min Yang
- Respiratory Department, Hunan Children's Hospital, Changsha, 410007, China.
| | - Yanping Chen
- Respiratory Department, Hunan Children's Hospital, Changsha, 410007, China
| | | | - Fang Shen
- Research Institute of Children, Hunan Children's Hospital, Changsha, 410007, China
| | - Yanni Meng
- Respiratory Department, Hunan Children's Hospital, Changsha, 410007, China
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Freeman AE, Willis KA, Qiao L, Abdelgawad AS, Halloran B, Rezonzew G, Nizami Z, Wenger N, Gaggar A, Ambalavanan N, Tipple TE, Lal CV. Microbial-induced Redox Imbalance in the Neonatal Lung Is Ameliorated by Live Biotherapeutics. Am J Respir Cell Mol Biol 2023; 68:267-278. [PMID: 36287630 PMCID: PMC9989473 DOI: 10.1165/rcmb.2021-0508oc] [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: 11/19/2021] [Accepted: 10/24/2022] [Indexed: 11/24/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a common lung disease of premature infants. Hyperoxia exposure and microbial dysbiosis are contributors to BPD development. However, the mechanisms linking pulmonary microbial dysbiosis to worsening lung injury are unknown. Nrf2 (nuclear factor erythroid 2-related factor 2) is a transcription factor that regulates oxidative stress responses and modulates hyperoxia-induced lung injury. We hypothesized that airway dysbiosis would attenuate Nrf2-dependent antioxidant function, resulting in a more severe phenotype of BPD. Here, we show that preterm infants with a Gammaproteobacteria-predominant dysbiosis have increased endotoxin in tracheal aspirates, and mice monocolonized with the representative Gammaproteobacteria Escherichia coli show increased tissue damage compared with germ-free (GF) control mice. Furthermore, we show Nrf2-deficient mice have worse lung structure and function after exposure to hyperoxia when the airway microbiome is augmented with E. coli. To confirm the disease-initiating potential of airway dysbiosis, we developed a novel humanized mouse model by colonizing GF mice with tracheal aspirates from human infants with or without severe BPD, producing gnotobiotic mice with BPD-associated and non-BPD-associated lung microbiomes. After hyperoxia exposure, BPD-associated mice demonstrated a more severe BPD phenotype and increased expression of Nrf2-regulated genes, compared with GF and non-BPD-associated mice. Furthermore, augmenting Nrf2-mediated antioxidant activity by supporting colonization with Lactobacillus species improved dysbiotic-augmented lung injury. Our results demonstrate that a lack of protective pulmonary microbiome signature attenuates an Nrf2-mediated antioxidant response, which is augmented by a respiratory probiotic blend. We anticipate antioxidant pathways will be major targets of future microbiome-based therapeutics for respiratory disease.
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Affiliation(s)
| | | | - Luhua Qiao
- Division of Neonatology, Department of Pediatrics
| | | | | | | | | | | | - Amit Gaggar
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, Alabama; and
| | | | - Trent E. Tipple
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, The University of Oklahoma Health Science Center, Oklahoma City, Oklahoma
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Liang J, Wang S, Hu J, Hong X, Zhu M, Liu X, Alswadeh M, Mo F, Dai M. Targeted inhibition of TXNRD1 prevents cartilage extracellular matrix degeneration by activating Nrf2 pathway in osteoarthritis. Biochem Biophys Res Commun 2022; 635:267-276. [PMID: 36308906 DOI: 10.1016/j.bbrc.2022.10.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/13/2022] [Accepted: 10/14/2022] [Indexed: 12/14/2022]
Abstract
Osteoarthritis, a prevalent orthopedic disease, can affect the elderly and causes impairment. The degradation and aberrant homeostasis of cartilage extracellular matrix figure pivotally in the progression of osteoarthritis. Thioredoxin systems plays a role in a wide range of biological processes, including cell proliferation, apoptosis, and oxidative stress. The present study aimed to investigate the unique function and underlying pathophysiological mechanism of TXNRD1 in chondrocytes. An upregulated expression of TXNRD1 was observed in the articular cartilage of osteoarthritis patients compared with normal articular cartilage. Furthermore, in vitro experiments showed that the expression of TXNRD1 was also abnormally increased in IL-1β-induced primary mouse chondrocytes. Silencing TXNRD1 using siRNA in chondrocytes could effectively inhibit the expression of ADAMTS5 and MMP13, and enhance the expression of COL2A1 and SOX9. The same was true for auranofin, an inhibitor of TXNRD1. This phenomenon indicated that inhibition of TXNRD1 attenuated il-1β-induced metabolic imbalance of extracellular matrix (ECM) and the progression of chondrocyte osteoarthritis. Further mechanism analysis revealed that the activation of Nrf2 signaling pathway and the expression of heme oxygenase-1 (HO-1) were increased upon TXNRD1 inhibition. Furthermore, auranofin was found to attenuate DMM-induced osteoarthritis progression in vivo. Therefore, the pharmacological downregulation of TXNRD1 may provide an effective novel therapy for OA.
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Affiliation(s)
- Jianhui Liang
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China
| | - Song Wang
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China
| | - Jiawei Hu
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China
| | - Xin Hong
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China
| | - Meisong Zhu
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China
| | - Xuqiang Liu
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China
| | - Momen Alswadeh
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China
| | - Fengbo Mo
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China.
| | - Min Dai
- Department of Orthopedics, The First Affiliated Hospital of Nanchang University, Artificial Joints Engineering and Technology Research Center of Jiangxi Province, Nanchang, China.
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Sherlock LG, McCarthy WC, Grayck MR, Solar M, Hernandez A, Zheng L, Delaney C, Tipple TE, Wright CJ, Nozik ES. Neonatal Selenium Deficiency Decreases Selenoproteins in the Lung and Impairs Pulmonary Alveolar Development. Antioxidants (Basel) 2022; 11:2417. [PMID: 36552625 PMCID: PMC9774937 DOI: 10.3390/antiox11122417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/16/2022] [Accepted: 11/22/2022] [Indexed: 12/13/2022] Open
Abstract
Decreased selenium (Se) levels during childhood and infancy are associated with worse respiratory health. Se is biologically active after incorporation into Se-containing antioxidant enzymes (AOE) and proteins. It is unknown how decreased maternal Se during pregnancy and lactation impacts neonatal pulmonary selenoproteins, growth, and lung development. Using a model of neonatal Se deficiency that limits Se intake to the dam during pregnancy and lactation, we evaluated which neonatal pulmonary selenoproteins are decreased in both the saccular (postnatal day 0, P0) and early alveolar (postnatal day 7, P7) stages of lung development. We found that Se deficient (SeD) pups weigh less and exhibit impaired alveolar development compared to Se sufficient (SeS) pups at P7. The activity levels of glutathione peroxidase (GPx) and thioredoxin reductase (Txnrd) were decreased at P0 and P7 in SeD lungs compared to SeS lungs. Protein content of GPx1, GPx3 and Txnrd1 were decreased in SeD lungs at P0 and P7, whereas Txnrd2 content was unaltered compared to SeS controls. The expression of NRF-2 dependent genes and several non-Se containing AOE were similar between SeS and SeD lungs. SeD lungs exhibited a decrease in selenoprotein N, an endoplasmic reticulum protein implicated in alveolar development, at both time points. We conclude that exposure to Se deficiency during pregnancy and lactation impairs weight gain and lung growth in offspring. Our data identify multiple selenoproteins in the neonatal lung that are vulnerable to decreased Se intake, which may impact oxidative stress and cell signaling under physiologic conditions as well as after oxidative stressors.
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Affiliation(s)
- Laura G. Sherlock
- Perinatal Research Center, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - William C. McCarthy
- Perinatal Research Center, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Maya R. Grayck
- Perinatal Research Center, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Mack Solar
- Perinatal Research Center, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Andres Hernandez
- Perinatal Research Center, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Lijun Zheng
- Perinatal Research Center, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Cassidy Delaney
- Perinatal Research Center, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Trent E. Tipple
- Department of Pediatrics, University of Oklahoma College of Medicine, Oklahoma City, OK 73104, USA
| | - Clyde J. Wright
- Perinatal Research Center, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Eva S. Nozik
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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Transcriptomic-Metabolomic Profiling in Mouse Lung Tissues Reveals Sex- and Strain-Based Differences. Metabolites 2022; 12:metabo12100932. [PMID: 36295835 PMCID: PMC9612261 DOI: 10.3390/metabo12100932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 01/24/2023] Open
Abstract
Omics analyses are commonly used for identifying pathways and genes responsible for physiologic and pathologic processes. Though sex is considered a biological variable in rigorous assessments of pulmonary responses to oxidant exposures, the contribution of the murine strain is largely ignored. This study utilized an unbiased integrated assessment of high-resolution metabolomic profiling and RNA-sequencing to explore sex- and strain-dependent pathways in adult mouse lungs. The results indicated that strain exhibited a greater influence than sex on pathways associated with inflammatory and oxidant/antioxidant responses and that interaction metabolites more closely resembled those identified as differentially expressed by strain. Metabolite analyses revealed that the components of the glutathione antioxidant pathway were different between strains, specifically in the formation of mixed disulfides. Additionally, selenium metabolites such as selenohomocystiene and selenocystathionine were similarly differentially expressed. Transcriptomic analysis revealed similar findings, as evidenced by differences in glutathione peroxidase, peroxiredoxin, and the inflammatory transcription factors RelA and Jun. In summary, an multi-omics integrated approach identified that murine strain disproportionately impacts baseline expression of antioxidant systems in lung tissues. We speculate that strain-dependent differences contribute to discrepant pulmonary responses in preclincal mouse models, with deleterious effects on clinical translation.
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Mathias M, Chang J, Perez M, Saugstad O. Supplemental Oxygen in the Newborn: Historical Perspective and Current Trends. Antioxidants (Basel) 2021; 10:1879. [PMID: 34942982 PMCID: PMC8698336 DOI: 10.3390/antiox10121879] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 11/16/2022] Open
Abstract
Oxygen is the final electron acceptor in aerobic respiration, and a lack of oxygen can result in bioenergetic failure and cell death. Thus, administration of supplemental concentrations of oxygen to overcome barriers to tissue oxygen delivery (e.g., heart failure, lung disease, ischemia), can rescue dying cells where cellular oxygen content is low. However, the balance of oxygen delivery and oxygen consumption relies on tightly controlled oxygen gradients and compartmentalized redox potential. While therapeutic oxygen delivery can be life-saving, it can disrupt growth and development, impair bioenergetic function, and induce inflammation. Newborns, and premature newborns especially, have features that confer particular susceptibility to hyperoxic injury due to oxidative stress. In this review, we will describe the unique features of newborn redox physiology and antioxidant defenses, the history of therapeutic oxygen use in this population and its role in disease, and clinical trends in the use of therapeutic oxygen and mitigation of neonatal oxidative injury.
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Affiliation(s)
- Maxwell Mathias
- Center for Pregnancy and Newborn Research, Department of Pediatrics, Section of Neonatal-Perinatal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jill Chang
- Division of Neonatology, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (J.C.); (M.P.); (O.S.)
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611, USA
| | - Marta Perez
- Division of Neonatology, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (J.C.); (M.P.); (O.S.)
- Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, IL 60611, USA
| | - Ola Saugstad
- Division of Neonatology, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (J.C.); (M.P.); (O.S.)
- Department of Pediatric Research, University of Oslo, N-0424 Oslo, Norway
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Sabatier P, Beusch CM, Gencheva R, Cheng Q, Zubarev R, Arnér ESJ. Comprehensive chemical proteomics analyses reveal that the new TRi-1 and TRi-2 compounds are more specific thioredoxin reductase 1 inhibitors than auranofin. Redox Biol 2021; 48:102184. [PMID: 34788728 PMCID: PMC8591550 DOI: 10.1016/j.redox.2021.102184] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/06/2021] [Accepted: 11/09/2021] [Indexed: 12/16/2022] Open
Abstract
Anticancer drugs that target cellular antioxidant systems have recently attracted much attention. Auranofin (AF) is currently evaluated in several clinical trials as an anticancer agent that targets the cytosolic and mitochondrial forms of the selenoprotein thioredoxin reductase, TXNRD1 and TXNRD2. Recently, two novel TXNRD1 inhibitors (TRi-1 and TRi-2) have been developed that showed anticancer efficacy comparable to AF, but with lower mitochondrial toxicity. However, the cellular action mechanisms of these drugs have not yet been thoroughly studied. Here we used several proteomics approaches to determine the effects of AF, TRi-1 and TRi-2 when used at IC50 concentrations with the mouse B16 melanoma and LLC lung adenocarcinoma cells, as these are often used for preclinical mouse models in evaluation of anticancer drugs. The results demonstrate that TRi-1 and TRi-2 are more specific TXNRD1 inhibitors than AF and reveal additional AF-specific effects on the cellular proteome. Interestingly, AF triggered stronger Nrf2-driven antioxidant responses than the other two compounds. Furthermore, AF affected several additional proteins, including GSK3A, GSK3B, MCMBP and EEFSEC, implicating additional effects on glycogen metabolism, cellular differentiation, inflammatory pathways, DNA replication and selenoprotein synthesis processes. Our proteomics data provide a resource for researchers interested in the multidimensional analysis of proteome changes associated with oxidative stress in general, and the effects of TXNRD1 inhibitors and AF protein targets in particular.
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Affiliation(s)
- Pierre Sabatier
- Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 17177, Sweden
| | - Christian M Beusch
- Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 17177, Sweden
| | - Radosveta Gencheva
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 17177, Sweden
| | - Qing Cheng
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 17177, Sweden
| | - Roman Zubarev
- Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 17177, Sweden; Department of Pharmacological & Technological Chemistry, I.M. Sechenov First Moscow State Medical University, Moscow, 119146, Russia; The National Medical Research Center for Endocrinology, 115478, Moscow, Russia.
| | - Elias S J Arnér
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, 17177, Sweden; Department of Selenoprotein Research, National Institute of Oncology, 1122, Budapest, Hungary.
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Oxygen Toxicity to the Immature Lung-Part I: Pathomechanistic Understanding and Preclinical Perspectives. Int J Mol Sci 2021; 22:ijms222011006. [PMID: 34681665 PMCID: PMC8540649 DOI: 10.3390/ijms222011006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 01/13/2023] Open
Abstract
In utero, the fetus and its lungs develop in a hypoxic environment, where HIF-1α and VEGFA signaling constitute major determinants of further development. Disruption of this homeostasis after preterm delivery and extrauterine exposure to high fractions of oxygen are among the key events leading to bronchopulmonary dysplasia (BPD). Reactive oxygen species (ROS) production constitutes the initial driver of pulmonary inflammation and cell death, altered gene expression, and vasoconstriction, leading to the distortion of further lung development. From preclinical studies mainly performed on rodents over the past two decades, the deleterious effects of oxygen toxicity and the injurious insults and downstream cascades arising from ROS production are well recognized. This article provides a concise overview of disease drivers and different therapeutic approaches that have been successfully tested within experimental models. Despite current studies, clinical researchers are still faced with an unmet clinical need, and many of these strategies have not proven to be equally effective in clinical trials. In light of this challenge, adapting experimental models to the complexity of the clinical situation and pursuing new directions constitute appropriate actions to overcome this dilemma. Our review intends to stimulate research activities towards the understanding of an important issue of immature lung injury.
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Auranofin-Mediated NRF2 Induction Attenuates Interleukin 1 Beta Expression in Alveolar Macrophages. Antioxidants (Basel) 2021; 10:antiox10050632. [PMID: 33919055 PMCID: PMC8143169 DOI: 10.3390/antiox10050632] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/01/2021] [Accepted: 04/12/2021] [Indexed: 01/11/2023] Open
Abstract
Background: Alveolar macrophages (AMs) are resident inflammatory cells in the lung that serve as early sentinels of infection or injury. We have identified thioredoxin reductase 1 inhibition by gold compounds increases activation of nuclear factor erythroid 2-related factor 2 (NRF2)-dependent pathways to attenuate inflammatory responses. The present studies utilized murine alveolar macrophages (MH-S) to test the hypothesis that the gold compound, auranofin (AFN), decreases interleukin (IL)-1β expression through NRF2-mediated interactions with nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway genes and/or increases in glutathione synthesis. Methods: MH-S cells were treated with AFN and lipopolysaccharide (LPS) and analyzed at 6 and 24 h. The Il1b promoter was analyzed by chromatin immunoprecipitation for direct interaction with NRF2. Results: Expression of IL-1β, p-IκBα, p-p65 NF-kB, and NOD-, LRR-, and pyrin domain-containing protein 3 were elevated by LPS exposure, but only IL-1β expression was suppressed by AFN treatment. Both AFN and LPS treatments increased cellular glutathione levels, but attenuation of glutathione synthesis by buthionine sulfoximine (BSO) did not alter expression of Il-1β. Analysis revealed direct NRF2 binding to the Il1b promoter which was enhanced by AFN and inhibited the transcriptional activity of DNA polymerase II. Conclusions: Our data demonstrate that AFN-induced NRF2 activation directly suppresses IL-1β synthesis independent of NFκB and glutathione-mediated antioxidant mechanisms. NRF2 binding to the promoter region of IL1β directly inhibits transcription of the IL1β gene. Collectively, our research suggests that gold compounds elicit NRF2-dependent pulmonary protection by suppressing macrophage-mediated inflammation.
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Chupakhin E, Krasavin M. Thioredoxin reductase inhibitors: updated patent review (2017-present). Expert Opin Ther Pat 2021; 31:745-758. [PMID: 33666133 DOI: 10.1080/13543776.2021.1899160] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Introduction: Thioredoxin reductase (TrxR) is a selenocysteine-containing enzyme which is responsible - as a part of the thioredoxin system - for maintaining redox homeostasis in cells. It is upregulated in cancerous state as a defense against oxidative stress. TrxR has been mostly considered an anticancer drug target although it has applications in other therapeutic areas such as neurodegeneration, inflammation, microbial infections, and neonatal hyperoxic lung injury.Areas covered: The present review covers the patent literature that appeared in the period 2017-2020, i.e. since the publication of the previous expert opinion patent review on TrxR inhibitors. The recent additions to the following traditional classes of inhibitors are discussed: metal complexes, Michael acceptors as well as arsenic and selenium compounds. At the same time, a novel group of nitro (hetero)aromatic compounds have emerged which likely acts via covalent inhibition mechanism. Several miscellaneous chemotypes are grouped under Miscellaneous subsection.Expert opinion: While specificity over glutathione reductase is achieved easily, TrxR is still moving toward the later stages of development at a very slow rate. Michael acceptors, particularly based on TRXR substrate-mimicking scaffolds, are gaining impetus and so are dual and hybrid compounds. The development prospects of the emerging nitro (hetero)aromatic chemotypes remain uncertain.
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Affiliation(s)
- Evgeny Chupakhin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg Russian Federation.,Institute for Living Systems, Immanuel Kant Baltic Federal University, Kaliningrad Russian Federation
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg Russian Federation.,Institute for Living Systems, Immanuel Kant Baltic Federal University, Kaliningrad Russian Federation
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13
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Chanda D, Dudefoi W, Anadu J, Minghetti M. Evaluation of the effect of silver and silver nanoparticles on the function of selenoproteins using an in-vitro model of the fish intestine: The cell line RTgutGC. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111930. [PMID: 33472113 DOI: 10.1016/j.ecoenv.2021.111930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/21/2020] [Accepted: 01/10/2021] [Indexed: 06/12/2023]
Abstract
Emerging research in mammalian cells suggests that ionic (AgNO3) and nano silver (AgNP) can disrupt the metabolism of selenium which plays a vital role in oxidative stress control. However, the effect of silver (Ag) on selenoprotein function in fish is poorly understood. Here we evaluate the effects of AgNO3 and citrate coated AgNP (cit-AgNP) on selenoprotein function and oxidative stress using a fish cell line derived from the rainbow trout (Oncorhynchus mykiss) intestine (RTgutGC). Cell viability was evaluated using a cytotoxicity assay which measures simultaneously metabolic activity, membrane integrity and lysosome integrity. Cells exposed to equimolar amounts of AgNO3 and cit-AgNP accumulated the same amount of silver intracellularly, however AgNO3 was more toxic than cit-AgNP. Selenoenzymes glutathione peroxidase (GPx) and thioredoxin reductase (TrxR) mRNA levels and enzyme activity were measured. While mRNA levels remained unaffected by AgNO3 or cit-AgNP, the enzyme activity of GPx was inhibited by AgNO3 (1 µM) and cit-AgNP (5 µM) and TrxR activity was inhibited by AgNO3 (0.4 µM) and cit-AgNP (1, 5 µM). Moreover, cells exposed to 1 µM of AgNO3 and cit-AgNP showed an increase in metallothionein b (MTb) mRNA levels at 24 h of exposure, confirming the uptake of silver, but returned to control levels at 72 h suggesting silver scavenging by MTb. Oxidative stress was not observed at any of the doses of AgNO3 or cit-AgNP tested. Overall, this study shows that AgNO3 or cit-AgNP can inhibit the activity of selenoenzymes but do not induce oxidative stress in RTgutGC cells.
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Affiliation(s)
- Debarati Chanda
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA
| | - William Dudefoi
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA; Department of Earth and Planetary Sciences, Washington University, Saint Louis, MO, USA
| | - Joshua Anadu
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA
| | - Matteo Minghetti
- Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA.
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14
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Ganguly A, Ofman G, Vitiello PF. Hydrogen Sulfide-Clues from Evolution and Implication for Neonatal Respiratory Diseases. CHILDREN (BASEL, SWITZERLAND) 2021; 8:213. [PMID: 33799529 PMCID: PMC7999351 DOI: 10.3390/children8030213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 11/17/2022]
Abstract
Reactive oxygen species (ROS) have been the focus of redox research in the realm of oxidative neonatal respiratory diseases such as bronchopulmonary dysplasia (BPD). Over the years, nitric oxide (NO) and carbon monoxide (CO) have been identified as important gaseous signaling molecules involved in modulating the redox homeostasis in the developing lung. While animal data targeting aspects of these redox pathways have been promising in treating and/or preventing experimental models of neonatal lung disease, none are particularly effective in human neonatal clinical trials. In recent years, hydrogen sulfide (H2S) has emerged as a novel gasotransmitter involved in a magnitude of cellular signaling pathways and functions. The importance of H2S signaling may lie in the fact that early life-forms evolved in a nearly anoxic, sulfur-rich environment and were dependent on H2S for energy. Recent studies have demonstrated an important role of H2S and its synthesizing enzymes in lung development, which normally takes place in a relatively hypoxic intrauterine environment. In this review, we look at clues from evolution and explore the important role that the H2S signaling pathway may play in oxidative neonatal respiratory diseases and discuss future opportunities to explore this phenomenon in the context of neonatal chronic lung disease.
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Affiliation(s)
- Abhrajit Ganguly
- Center for Pregnancy and Newborn Research, Department of Pediatrics, Section of Neonatal-Perinatal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (G.O.); (P.F.V.)
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15
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Chen D, Gao ZQ, Wang YY, Wan BB, Liu G, Chen JL, Wu YX, Zhou Q, Jiang SY, Yu RQ, Pang QF. Sodium Propionate Enhances Nrf2-Mediated Protective Defense Against Oxidative Stress and Inflammation in Lipopolysaccharide-Induced Neonatal Mice. J Inflamm Res 2021; 14:803-816. [PMID: 33732006 PMCID: PMC7957230 DOI: 10.2147/jir.s303105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 02/23/2021] [Indexed: 12/27/2022] Open
Abstract
Background Alveolar arrest and the impaired angiogenesis caused by chronic inflammation and oxidative stress are two main factors in bronchopulmonary dysplasia (BPD). Short-chain fatty acids (SCFAs), especially propionate, possess anti-oxidant and anti-inflammatory effects. The present study was designed to examine the roles of sodium propionate (SP) on lipopolysaccharide (LPS)-challenged BPD and its potential mechanisms. Methods WT, Nrf2-/- mice and pulmonary microvascular endothelial cells (HPMECs) were used in this study. LPS was performed to mimic BPD model both in vivo and vitro. Lung histopathology, inflammation and oxidative stress-related mRNA expressions in lungs involved in BPD pathogenesis were investigated. In addition, cell viability and angiogenesis were also tested. Results The increased nuclear factor erythroid 2-related factor (Nrf2) and decreased Kelch-like ECH-associated protein-1 (Keap-1) expressions were observed after SP treatment in the LPS-induced neonatal mouse model of BPD. In LPS-induced wild-type but not Nrf2-/- neonatal mice, SP reduced pulmonary inflammation and oxidative stress and exhibited obvious pathological alterations of the alveoli. Moreover, in LPS-evoked HPMECs, SP accelerated Nrf2 nuclear translocation presented and exhibited cytoprotective and pro-angiogenesis effects. In addition, SP diminished the LPS-induced inflammatory response by blocking the activation of nuclear factor-kappa B pathway. Moreover, pretreatment with ML385, an Nrf2 specific inhibitor, offsets the beneficial effects of SP on inflammation, oxidative stress and angiogenesis in LPS-evoked HPMECs. Conclusion SP protects against LPS-induced lung alveolar simplification and abnormal angiogenesis in neonatal mice and HPMECs in an Nrf2-dependent manner.
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Affiliation(s)
- Dan Chen
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Zhi-Qi Gao
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Ying-Ying Wang
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Bin-Bin Wan
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Gang Liu
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Jun-Liang Chen
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Ya-Xian Wu
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
| | - Qin Zhou
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Shan-Yu Jiang
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Ren-Qiang Yu
- Department of Neonatology, The Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical University, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Qing-Feng Pang
- Department of Physiopathology, Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, Jiangsu Province, People's Republic of China
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16
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Lignelli E, Palumbo F, Bayindir SG, Nagahara N, Vadász I, Herold S, Seeger W, Morty RE. The H 2S-generating enzyme 3-mercaptopyruvate sulfurtransferase regulates pulmonary vascular smooth muscle cell migration and proliferation but does not impact normal or aberrant lung development. Nitric Oxide 2021; 107:31-45. [PMID: 33338600 DOI: 10.1016/j.niox.2020.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 10/07/2020] [Accepted: 12/11/2020] [Indexed: 02/07/2023]
Abstract
Along with nitric oxide (NO), the gasotransmitters carbon monoxide (CO) and hydrogen sulfide (H2S) are emerging as potentially important players in newborn physiology, as mediators of newborn disease, and as new therapeutic modalities. Several recent studies have addressed H2S in particular in animal models of bronchopulmonary dysplasia (BPD), a common complication of preterm birth where oxygen toxicity stunts lung development. In those studies, exogenous H2S attenuated the impact of oxygen toxicity on lung development, and two H2S-generating enzymes were documented to affect pulmonary vascular development. H2S is directly generated endogenously by three enzymes, one of which, 3-mercaptopyruvate sulfurtransferase (MPST), has not been studied in the lung. In a hyperoxia-based animal model of BPD, oxygen exposure deregulated MPST expression during post-natal lung development, where MPST was localized to the smooth muscle layer of the pulmonary vessels in developing lungs. siRNA-mediated abrogation of MPST expression in human pulmonary artery smooth muscle cells in vitro limited baseline cell migration and cell proliferation, without affecting apoptosis or cell viability. In vivo, MPST was dispensable for normal lung development in Mpst-/-mice, and MPST did not contribute to stunted lung development driven by hyperoxia exposure, assessed by design-based stereology. These data demonstrate novel roles for MPST in pulmonary vascular smooth muscle cell physiology. The potential caveats of using Mpst-/- mice to study normal and aberrant lung development are also discussed, highlighting the possible confounding, compensatory effects of other H2S-generating enzymes that are present alongside MPST in the smooth muscle compartment of developing pulmonary vessels.
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Affiliation(s)
- Ettore Lignelli
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Member of the German Center for Lung Research (DZL), Parkstrasse 1, 60231, Bad Nauheim, Germany; Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, Aulweg 123, 35392, Giessen, Germany
| | - Francesco Palumbo
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Member of the German Center for Lung Research (DZL), Parkstrasse 1, 60231, Bad Nauheim, Germany; Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, Aulweg 123, 35392, Giessen, Germany
| | - Selahattin Görkem Bayindir
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Member of the German Center for Lung Research (DZL), Parkstrasse 1, 60231, Bad Nauheim, Germany; Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, Aulweg 123, 35392, Giessen, Germany
| | - Noriyuki Nagahara
- Isotope Research Laboratory, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8602, Japan
| | - István Vadász
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, Aulweg 123, 35392, Giessen, Germany; CardioPulmonary Institute, Justus Liebig University Giessen, Klinikstrasse 33, Giessen, Germany
| | - Susanne Herold
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, Aulweg 123, 35392, Giessen, Germany; CardioPulmonary Institute, Justus Liebig University Giessen, Klinikstrasse 33, Giessen, Germany
| | - Werner Seeger
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Member of the German Center for Lung Research (DZL), Parkstrasse 1, 60231, Bad Nauheim, Germany; Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, Aulweg 123, 35392, Giessen, Germany; Institute for Lung Health (ILH), Justus Liebig University Giessen, Aulweg 130, Giessen, Germany; CardioPulmonary Institute, Justus Liebig University Giessen, Klinikstrasse 33, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Member of the German Center for Lung Research (DZL), Parkstrasse 1, 60231, Bad Nauheim, Germany; Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus Liebig University, Aulweg 123, 35392, Giessen, Germany; CardioPulmonary Institute, Justus Liebig University Giessen, Klinikstrasse 33, Giessen, Germany.
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17
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Morris G, Walker AJ, Walder K, Berk M, Marx W, Carvalho AF, Maes M, Puri BK. Increasing Nrf2 Activity as a Treatment Approach in Neuropsychiatry. Mol Neurobiol 2021; 58:2158-2182. [PMID: 33411248 DOI: 10.1007/s12035-020-02212-w] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 11/16/2020] [Indexed: 02/07/2023]
Abstract
Nuclear factor erythroid 2-related factor 2 (Nrf2) is a transcription factor encoded by NFE2L2. Under oxidative stress, Nrf2 does not undergo its normal cytoplasmic degradation but instead travels to the nucleus, where it binds to a DNA promoter and initiates transcription of anti-oxidative genes. Nrf2 upregulation is associated with increased cellular levels of glutathione disulfide, glutathione peroxidase, glutathione transferases, thioredoxin and thioredoxin reductase. Given its key role in governing the cellular antioxidant response, upregulation of Nrf2 has been suggested as a common therapeutic target in neuropsychiatric illnesses such as major depressive disorder, bipolar disorder and schizophrenia, which are associated with chronic oxidative and nitrosative stress, characterised by elevated levels of reactive oxygen species, nitric oxide and peroxynitrite. These processes lead to extensive lipid peroxidation, protein oxidation and carbonylation, and oxidative damage to nuclear and mitochondrial DNA. Intake of N-acetylcysteine, coenzyme Q10 and melatonin is accompanied by increased Nrf2 activity. N-acetylcysteine intake is associated with improved cerebral mitochondrial function, decreased central oxidative and nitrosative stress, reduced neuroinflammation, alleviation of endoplasmic reticular stress and suppression of the unfolded protein response. Coenzyme Q10, which acts as a superoxide scavenger in neuroglial mitochondria, instigates mitohormesis, ameliorates lipid peroxidation in the inner mitochondrial membrane, activates uncoupling proteins, promotes mitochondrial biogenesis and has positive effects on the plasma membrane redox system. Melatonin, which scavenges mitochondrial free radicals, inhibits mitochondrial nitric oxide synthase, restores mitochondrial calcium homeostasis, deacetylates and activates mitochondrial SIRT3, ameliorates increased permeability of the blood-brain barrier and intestine and counters neuroinflammation and glutamate excitotoxicity.
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Affiliation(s)
- G Morris
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - A J Walker
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - K Walder
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - M Berk
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia.,CMMR Strategic Research Centre, School of Medicine, Deakin University, Geelong, VIC, Australia.,Orygen, The National Centre of Excellence in Youth Mental Health, The Department of Psychiatry and the Florey Institute for Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
| | - W Marx
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - A F Carvalho
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada
| | - M Maes
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), Barwon Health, School of Medicine, Deakin University, Geelong, VIC, Australia.,Department of Psychiatry, Chulalongkorn University, Bangkok, Thailand
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18
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Robbins ME, Cho HY, Hansen JM, Luchsinger JR, Locy ML, Velten M, Kleeberger SR, Rogers LK, Tipple TE. Glutathione reductase deficiency alters lung development and hyperoxic responses in neonatal mice. Redox Biol 2021; 38:101797. [PMID: 33254076 PMCID: PMC7708869 DOI: 10.1016/j.redox.2020.101797] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/07/2020] [Accepted: 11/10/2020] [Indexed: 12/14/2022] Open
Abstract
Cellular antioxidants protect against hyperoxic lung injury. The role of the glutathione (GSH) system in lung development and bronchopulmonary dysplasia (BPD) pathogenesis has not been systematically investigated. The current study utilized GSH reductase-deficient (Gsr-KO) neonatal mice to test the hypothesis that early disruption of the GSH system negatively impacts lung development and hyperoxic responses. Lungs from wild-type (Gsr-WT) and Gsr-KO mice were analyzed for histopathology, developmental markers, redox indices, and transcriptome profiling at different developmental stages following exposure to room air or hyperoxia (85% O2) for up to 14 d. Lungs from Gsr-KO mice exhibited alveolar epithelial dysplasia in the embryonic and neonatal periods with relatively normal lung architecture in adulthood. GSH and its oxidized form (GSSG) were 50-70% lower at E19-PND14 in Gsr-KO lungs than in age-matched Gsr-WT. Differential gene expression between Gsr-WT and Gsr-KO lungs was analyzed at discrete developmental stages. Gsr-KO lungs exhibited downregulated cell cycle and DNA damage checkpoint genes at E19, as well as lung lipid metabolism and surfactant genes at PND5. In addition to abnormal baseline lung morphometry, Gsr-KO mice displayed a blunted response to hyperoxia. Hyperoxia caused a more robust upregulation of the lung thioredoxin system in Gsr-KO compared to Gsr-WT. Gsr-dependent, hyperoxia-responsive genes were highly associated with abnormal cytoskeleton, skeletal-muscular function, and tissue morphology at PND5. Overall, our data in Gsr-KO mice implicate the GSH system as a key regulator of lung development, cellular differentiation, and hyperoxic responses in neonatal mice.
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Affiliation(s)
- Mary E Robbins
- Division of Neonatology, Department of Pediatrics, Northwestern University, Chicago, IL, USA.
| | - Hye-Youn Cho
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Jason M Hansen
- Physiology & Developmental Biology, Brigham Young University, Provo, UT, USA
| | - Joseph R Luchsinger
- Medical Scientist Training Program, Vanderbilt University, Nashville, TN, USA
| | - Morgan L Locy
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Markus Velten
- Department of Anesthesiology and Intensive Care Medicine, Rheinische Friedrich- Wilhelms University, University Medical Center, Bonn, Germany
| | - Steven R Kleeberger
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Lynette K Rogers
- Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Trent E Tipple
- Center for Pregnancy and Newborn Research, Section of Neonatal-Perinatal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
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Callaway DA, Jiang W, Wang L, Lingappan K, Moorthy B. Oxygen-mediated lung injury in mice lacking the gene for NRF2: Rescue with the cytochrome P4501A-inducer, beta-naphthoflavone (BNF), and differential sex-specific effects. Free Radic Biol Med 2020; 160:208-218. [PMID: 32791187 PMCID: PMC7704914 DOI: 10.1016/j.freeradbiomed.2020.07.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/15/2020] [Accepted: 07/22/2020] [Indexed: 01/27/2023]
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) leads to progressive lung injury, which significantly impacts patient morbidity and mortality but may differ clinically between the sexes. Cytochrome P450 (CYP) 1A enzymes are protective against hyperoxic lung injury and may contribute to sex-dependent pathology. NRF2 is a critical transcriptional regulator of antioxidants and loss of NRF2 leads to severe hyperoxic lung injury and mortality in mice. NRF2 deficiencies and polymorphisms have been observed in patients with pulmonary diseases such as chronic obstructive pulmonary disease and severe asthma. No prior studies have evaluated whether there are sex-specific differences in oxygen-mediated lung injury in Nrf2-/- mice and there are few rescue studies. OBJECTIVE To test the hypothesis that hyperoxia induces greater lung injury and inflammation in Nrf2-/- mice compared to wild type (WT) that differs between sexes, and that this phenotype will be rescued by the administration of the cytochrome P450 (CYP) 1A inducer beta-naphthoflavone (BNF). DESIGN/METHODS Male and female 8-10-week-old WT or Nrf2-/- C57BL/6 mice were pre-treated with BNF (40 mg/kg) or corn oil control and exposed to hyperoxia (95% O2) for 68 h. Survival, pulmonary edema, neutrophil recruitment, and lung injury scores were evaluated. Gene expression of phase II detoxification enzymes, pulmonary cytokines, and Cyp1a1/2 was quantified. CYP1A1/2 protein expression and catalytic activities were also measured. RESULTS Hyperoxia exposure greatly reduced survival in Nrf2-/- mice, particularly in females. BNF treatment improved survival by 182.8% in Nrf2-/- females and by 41.4% in Nrf2-/- males as well as in WT females by 85.7%. Females had greater pulmonary edema as measured by lung weight to body weight ratios but was attenuated in all groups except Nrf2-/- females by BNF. Neutrophils doubled in Nrf2-/- lungs compared to WT in hyperoxia but were decreased in BNF-treated females of both genotypes. Pulmonary cytokine gene expression including Il-6 and Tnf-α increased in hyperoxia especially in Nrf2-/- mice and was unaffected by BNF. Pulmonary and hepatic Nqo1 gene expression w-as decreased in Nrf2-/- mice and was largely unaffected by BNF; however pulmonary Ho-1 did not vary significantly between the genotypes and was decreased in WT animals treated with BNF. Activities and protein expression of pulmonary and hepatic CYP1A1/2 were induced via BNF across all groups. Although hepatic Cyp1a2 gene expression was higher in Nrf2-/- males, the catalytic activity was higher in Nrf2-/- females. CONCLUSIONS Hyperoxia augmented lung injury in Nrf2-/- mice, and pre-treatment with BNF was protective against mortality and injury, eliminating the sex-dependent survival difference in both genotypes. Our results support the hypothesis that NRF2 protects mice against lung injury, and the fact that BNF rescues the lung injury phenotype in Nrf2-/- mice suggests that augmented CYP1A expression by BNF may contribute to the beneficial effects. Further studies could lead to the development of BNF and other flavonoids for the prevention/treatment of hyperoxic lung injury, particularly in vulnerable patients with relative NRF2 deficiency, regardless of sex.
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Affiliation(s)
- Danielle A Callaway
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Weiwu Jiang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Lihua Wang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA
| | - Krithika Lingappan
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Bhagavatula Moorthy
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
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20
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Tamatam CM, Reddy NM, Potteti HR, Ankireddy A, Noone PM, Yamamoto M, Kensler TW, Reddy SP. Preconditioning the immature lung with enhanced Nrf2 activity protects against oxidant-induced hypoalveolarization in mice. Sci Rep 2020; 10:19034. [PMID: 33149211 PMCID: PMC7642393 DOI: 10.1038/s41598-020-75834-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 10/20/2020] [Indexed: 12/18/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic disease of preterm babies with poor clinical outcomes. Nrf2 transcription factor is crucial for cytoprotective response, whereas Keap1—an endogenous inhibitor of Nrf2 signaling—dampens these protective responses. Nrf2-sufficient (wild type) newborn mice exposed to hyperoxia develop hypoalveolarization, which phenocopies human BPD, and Nrf2 deficiency worsens it. In this study, we used PND1 pups bearing bearing hypomorphic Keap1 floxed alleles (Keap1f/f) with increased levels of Nrf2 to test the hypothesis that constitutive levels of Nrf2 in the premature lung are insufficient to mitigate hyperoxia-induced hypoalveolarization. Both wildtype and Keap1f/f pups at PND1 were exposed to hyperoxia for 72 h and then allowed to recover at room air for two weeks (at PND18), sacrificed, and lung hypoalveolarization and inflammation assessed. Hyperoxia-induced lung hypoalveolarization was remarkably lower in Keap1f/f pups than in wildtype counterparts (28.9% vs 2.4%, wildtype vs Keap1f/f). Likewise, Keap1f/f pups were protected against prolonged (96 h) hyperoxia-induced hypoalveolarization. However, there were no differences in hyperoxia-induced lung inflammatory response immediately after exposure or at PND18. Lack of hypoalveolarization in Keap1f/f pups was accompanied by increased levels of expression of antioxidant genes and GSH as assessed immediately following hyperoxia. Keap1 knockdown resulted in upregulation of lung cell proliferation postnatally but had opposing effects following hyperoxia. Collectively, our study demonstrates that augmenting endogenous Nrf2 activation by targeting Keap1 may provide a physiological way to prevent hypoalveolarization associated with prematurity.
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Affiliation(s)
- Chandra M Tamatam
- Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, 60612, USA.
| | - Narsa M Reddy
- Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, 60612, USA.,Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL, 60612, USA
| | - Haranatha R Potteti
- Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Aparna Ankireddy
- Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Patrick M Noone
- Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Masayuki Yamamoto
- Department of Medical Biochemistry, Tohoku University, Sendai, Japan
| | - Thomas W Kensler
- Translational Research Program, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Sekhar P Reddy
- Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, 60612, USA.
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21
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Difference in pyruvic acid metabolism between neonatal and adult mouse lungs exposed to hyperoxia. PLoS One 2020; 15:e0238604. [PMID: 32881962 PMCID: PMC7470327 DOI: 10.1371/journal.pone.0238604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 08/19/2020] [Indexed: 11/19/2022] Open
Abstract
Objective Neonatal lungs are more tolerant to hyperoxic injury than are adult lungs. This study investigated differences in the response to hyperoxic exposure between neonatal and adult mouse lungs using metabolomics analysis with capillary electrophoresis time-of-flight mass spectrometry (CE- TOFMS). Methods Neonatal and adult mice were exposed to 21% or 95% O2 for four days. Subsequently, lung tissue samples were collected and analyzed by CE-TOFMS. Pyruvate dehydrogenase (PDH) enzyme activity was determined using a microplate assay kit. PDH kinase (Pdk) 1, Pdk2, Pdk3, and Pdk4 mRNA expression levels were determined using quantitative reverse transcription-polymerase chain reaction. Pdk4 protein expression was quantified by Western blotting and Pdk4 protein localization was evaluated by immunohistochemistry. Results Levels of 3-phosphoglyceric acid, 2-phosphoglyceric acid, phosphoenolpyruvic acid, and lactic acid were significantly elevated in the lungs of hyperoxia-exposed versus normoxia-exposed adult mice, whereas no significant differences were observed with hyperoxia exposure in neonatal mice. PDH activity was reduced in the lungs of adult mice only. Pdk4 mRNA expression levels after hyperoxic exposure were significantly elevated in adult mice compared with that in neonatal mice. Conversely, gene expression levels of Pdk1, Pdk2, and Pdk3 did not differ after hyperoxic exposure in either neonatal or adult mice. Pdk4 protein levels were also significantly increased in adult mouse lungs exposed to hyperoxia and were localized mainly to the epithelium of terminal bronchiole. Conclusions Specific metabolites associated with glycolysis and gluconeogenesis were altered after hyperoxia exposure in the lungs of adult mice, but not in neonates, which was likely a result of reduced PDH activity due to Pdk4 mRNA upregulation under hyperoxia.
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Staples S, Wall SB, Li R, Tipple TE. Selenium-independent antioxidant and anti-inflammatory effects of thioredoxin reductase inhibition in alveolar macrophages. Life Sci 2020; 259:118285. [PMID: 32798556 DOI: 10.1016/j.lfs.2020.118285] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/08/2020] [Accepted: 08/11/2020] [Indexed: 01/10/2023]
Abstract
AIMS Interleukin-1β (IL-1β) contributes to the development of bronchopulmonary dysplasia (BPD). Thioredoxin reductase-1 (Txnrd1) inhibition activates nuclear factor erythroid 2-related factor 2 (Nrf2)-dependent responses. Txnrd1 activity is selenium (Se) dependent and Se deficiency is common in prematurity. Auranofin (AFN), a Txnrd1 inhibitor, decreases IL-1β levels and increases Nrf2 activation in lipopolysaccharide (LPS) treated alveolar macrophages. In lung epithelia, AFN-induced Nrf2 activation is Se dependent. We tested the hypothesis that the effects of Txnrd1 inhibition in alveolar macrophages are Se dependent. MAIN METHODS To establish Se sufficient (Se+) and deficient (Se-) conditions, alveolar (MH-S) macrophages were cultured in 2.5% fetal bovine serum (FBS) ± 25 nM Na2SeO3. Se- (2.5% FBS) and Se+ (2.5% FBS + 25 nM Na2SeO3) cells were cultured in the presence or absence of 0.05 μg/mL LPS and/or 0.5 μM AFN. Nrf2 activation was determined by measuring NADPH quinone oxidoreductase-1 (Nqo1) and glutathione levels. IL-1β mRNA (Il1b) and protein levels were measured using qRT-PCR and ELISA. Data were analyzed by ANOVA followed by Tukey's post-hoc. KEY FINDINGS We detected an independent effect of AFN, but not LPS, on Nqo1 expression and GSH levels in Se+ and Se- cells. LPS significantly increased Il1b and IL-1β levels in both groups. AFN-mediated attenuation of this effect was not impacted by Se status. SIGNIFICANCE The beneficial effects of Txnrd1 inhibition in alveolar macrophages are Se-independent and therefore unlikely to be diminished by clinical Se deficiency.
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Affiliation(s)
- Sara Staples
- Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Stephanie B Wall
- Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rui Li
- Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Trent E Tipple
- Center for Pregnancy and Newborn Research, Section of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
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23
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Addis DR, Molyvdas A, Ambalavanan N, Matalon S, Jilling T. Halogen exposure injury in the developing lung. Ann N Y Acad Sci 2020; 1480:30-43. [PMID: 32738176 DOI: 10.1111/nyas.14445] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/19/2020] [Accepted: 07/30/2020] [Indexed: 12/27/2022]
Abstract
Owing to a high-volume industrial usage of the halogens chlorine (Cl2 ) and bromine (Br2 ), they are stored and transported in abundance, creating a risk for accidental or malicious release to human populations. Despite extensive efforts to understand the mechanisms of toxicity upon halogen exposure and to develop specific treatments that could be used to treat exposed individuals or large populations, until recently, there has been little to no effort to determine whether there are specific features and or the mechanisms of halogen exposure injury in newborns or children. We established a model of neonatal halogen exposure and published our initial findings. In this review, we aim to contrast and compare the findings in neonatal mice exposed to Br2 with the findings published on adult mice exposed to Br2 and the neonatal murine models of bronchopulmonary dysplasia. Despite remarkable similarities across these models in overall alveolar architecture, there are distinct functional and apparent mechanistic differences that are characteristic of each model. Understanding the mechanistic and functional features that are characteristic of the injury process in neonatal mice exposed to halogens will allow us to develop countermeasures that are appropriate for, and effective in, this unique population.
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Affiliation(s)
- Dylan R Addis
- Department of Anesthesiology and Perioperative Medicine, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Division of Molecular and Translational Biomedicine, Pulmonary Injury and Repair Center, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,UAB Comprehensive Cardiovascular Center, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Adam Molyvdas
- Department of Anesthesiology and Perioperative Medicine, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Division of Molecular and Translational Biomedicine, Pulmonary Injury and Repair Center, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Namasivayam Ambalavanan
- Division of Neonatology, Department of Pediatrics, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Sadis Matalon
- Department of Anesthesiology and Perioperative Medicine, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Division of Molecular and Translational Biomedicine, Pulmonary Injury and Repair Center, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
| | - Tamas Jilling
- Division of Neonatology, Department of Pediatrics, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama.,Department of Pediatrics, the University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
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The interplay between oxidative stress and bioenergetic failure in neuropsychiatric illnesses: can we explain it and can we treat it? Mol Biol Rep 2020; 47:5587-5620. [PMID: 32564227 DOI: 10.1007/s11033-020-05590-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 06/12/2020] [Indexed: 12/12/2022]
Abstract
Nitro-oxidative stress and lowered antioxidant defences play a key role in neuropsychiatric disorders such as major depression, bipolar disorder and schizophrenia. The first part of this paper details mitochondrial antioxidant mechanisms and their importance in reactive oxygen species (ROS) detoxification, including details of NO networks, the roles of H2O2 and the thioredoxin/peroxiredoxin system, and the relationship between mitochondrial respiration and NADPH production. The second part highlights and identifies the causes of the multiple pathological sequelae arising from self-amplifying increases in mitochondrial ROS production and bioenergetic failure. Particular attention is paid to NAD+ depletion as a core cause of pathology; detrimental effects of raised ROS and reactive nitrogen species on ATP and NADPH generation; detrimental effects of oxidative and nitrosative stress on the glutathione and thioredoxin systems; and the NAD+-induced signalling cascade, including the roles of SIRT1, SIRT3, PGC-1α, the FOXO family of transcription factors, Nrf1 and Nrf2. The third part discusses proposed therapeutic interventions aimed at mitigating such pathology, including the use of the NAD+ precursors nicotinamide mononucleotide and nicotinamide riboside, both of which rapidly elevate levels of NAD+ in the brain and periphery following oral administration; coenzyme Q10 which, when given with the aim of improving mitochondrial function and reducing nitro-oxidative stress in the brain, may be administered via the use of mitoquinone, which is in essence ubiquinone with an attached triphenylphosphonium cation; and N-acetylcysteine, which is associated with improved mitochondrial function in the brain and produces significant decreases in oxidative and nitrosative stress in a dose-dependent manner.
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25
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Club Cell Heme Oxygenase-1 Deletion: Effects in Hyperoxia-Exposed Adult Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2908271. [PMID: 32587658 PMCID: PMC7303751 DOI: 10.1155/2020/2908271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/29/2020] [Accepted: 05/16/2020] [Indexed: 02/06/2023]
Abstract
Thioredoxin reductase-1 (TXNRD1) inhibition activates nuclear factor (erythroid-derived 2)-like 2 (Nrf2) responses and prevents acute lung injury (ALI). Heme oxygenase-1 (HO-1) induction following TXNRD1 inhibition is Nrf2-dependent in airway epithelial (club) cells in vitro. The influence of club cell HO-1 on lung development and lung injury responses is poorly understood. The present studies characterized the effects of hyperoxia on club cell-specific HO-1 knockout (KO) mice. These mice were generated by crossing Hmox1 flox mice with transgenic mice expressing cre recombinase under control of the club cell-specific Scgb1a1 promoter. Baseline analyses of lung architecture and function performed in age-matched adult wild-type and KO mice indicated an increased alveolar size and airway resistance in HO-1 KO mice. In subsequent experiments, adult wild-type and HO-1 KO mice were either continuously exposed to >95% hyperoxia or room air for 72 h or exposed to >95 hyperoxia for 48 h followed by recovery in room air for 48 h. Injury was quantitatively assessed by calculating right lung/body weight ratios (g/kg). Analyses indicated an independent effect of hyperoxia but not genotype on right lung/body weight ratios in both wild-type and HO-1 KO mice. The magnitude of increases in right lung/body weight ratios was similar in mice of both genotypes. In the recovery model, an independent effect of hyperoxia but not genotype was also detected. In contrast to the continuous exposure model, right lung/body weight ratio mice were significantly elevated in HO-1 KO but not wild-type mice. Though club cell HO-1 does not alter hyperoxic sensitivity in adult mice, it significantly influences lung development and resolution of lung injury following acute hyperoxic exposure.
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Dunigan-Russell K, Lin V, Silverberg M, Wall SB, Li R, Gotham J, Nicola T, Sridharan A, Snowball J, Delaney C, Li Q, Tipple TE. Aurothioglucose enhances proangiogenic pathway activation in lungs from room air and hyperoxia-exposed newborn mice. Am J Physiol Lung Cell Mol Physiol 2020; 318:L1165-L1171. [PMID: 32292070 DOI: 10.1152/ajplung.00086.2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Bronchopulmonary dysplasia (BPD), a long-term respiratory morbidity of prematurity, is characterized by attenuated alveolar and vascular development. Supplemental oxygen and immature antioxidant defenses contribute to BPD development. Our group identified thioredoxin reductase-1 (TXNRD1) as a therapeutic target to prevent BPD. The present studies evaluated the impact of the TXNRD1 inhibitor aurothioglucose (ATG) on pulmonary responses and gene expression in newborn C57BL/6 pups treated with saline or ATG (25 mg/kg ip) within 12 h of birth and exposed to room air (21% O2) or hyperoxia (>95% O2) for 72 h. Purified RNA from lung tissues was sequenced, and differential expression was evaluated. Hyperoxic exposure altered ~2,000 genes, including pathways involved in glutathione metabolism, intrinsic apoptosis signaling, and cell cycle regulation. The isolated effect of ATG treatment was limited primarily to genes that regulate angiogenesis and vascularization. In separate studies, pups were treated as described above and returned to room air until 14 days. Vascular density analyses were performed, and ANOVA indicated an independent effect of hyperoxia on vascular density and alveolar architecture at 14 days. Consistent with RNA-seq analyses, ATG significantly increased vascular density in room air, but not in hyperoxia-exposed pups. These findings provide insights into the mechanisms by which TXNRD1 inhibitors may enhance lung development.
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Affiliation(s)
- Katelyn Dunigan-Russell
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Vivian Lin
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Mary Silverberg
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Stephanie B Wall
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Rui Li
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - John Gotham
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Teodora Nicola
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Anusha Sridharan
- Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - John Snowball
- Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Cassidy Delaney
- Section of Neonatology, Department of Pediatrics, University of Colorado Anschutz Medical Campus and Children's Hospital Colorado, Aurora, Colorado
| | - Qian Li
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama.,Division of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Trent E Tipple
- Section of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Oklahoma, Oklahoma City, Oklahoma
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27
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Huang F, Zhang C, Liu Q, Zhao Y, Zhang Y, Qin Y, Li X, Li C, Zhou C, Jin N, Jiang C. Identification of amitriptyline HCl, flavin adenine dinucleotide, azacitidine and calcitriol as repurposing drugs for influenza A H5N1 virus-induced lung injury. PLoS Pathog 2020; 16:e1008341. [PMID: 32176725 PMCID: PMC7075543 DOI: 10.1371/journal.ppat.1008341] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 01/21/2020] [Indexed: 12/15/2022] Open
Abstract
Infection with avian influenza A H5N1 virus results in acute lung injury (ALI) and has a high mortality rate (52.79%) because there are limited therapies available for treatment. Drug repositioning is an economical approach to drug discovery. We developed a method for drug repositioning based on high-throughput RNA sequencing and identified several drugs as potential treatments for avian influenza A H5N1 virus. Using high-throughput RNA sequencing, we identified a total of 1,233 genes differentially expressed in A549 cells upon H5N1 virus infection. Among these candidate genes, 79 drug targets (corresponding to 59 approved drugs) overlapped with the DrugBank target database. Twenty-two of the 41 commercially available small-molecule drugs reduced H5N1-mediated cell death in cultured A549 cells, and fifteen drugs that protected A549 cells when administered both pre- and post-infection were tested in an H5N1-infection mouse model. The results showed significant alleviation of acute lung injury by amitriptyline HCl (an antidepressant drug), flavin adenine dinucleotide (FAD; an ophthalmic agent for vitamin B2 deficiency), azacitidine (an anti-neoplastic drug) and calcitriol (an active form of vitamin D). All four agents significantly reduced the infiltrating cell count and decreased the lung injury score in H5N1 virus-infected mice based on lung histopathology, significantly improved mouse lung edema by reducing the wet-to-dry weight ratio of lung tissue and significantly improved the survival of H5N1 virus-infected mice. This study not only identifies novel potential therapies for influenza H5N1 virus-induced lung injury but also provides a highly effective and economical screening method for repurposing drugs that may be generalizable for the prevention and therapy of other diseases. Highly pathogenic avian influenza (HPAI) A virus H5N1 causes acute lung injury (ALI) and acute respiratory distress syndrome (ARDS), with mortality as high as 52.79%. No vaccine for HPAI virus is available, and current treatments for influenza A H5N1 virus-induced ALI have limitations. Drug repurposing may be an effective approach for developing novel therapeutic strategies. In this study, we identified 4 drugs, the antidepressant amitriptyline HCl, the ophthalmic flavin adenine dinucleotide, the anti-neoplastic azacitidine and the vitamin D-deficiency treatment calcitriol, as being highly effective for the treatment of H5N1 virus-induced ALI using a transcriptomic-based high-throughput repurposing drug screening. These approved drugs might constitute novel potential remedies for treating influenza H5N1 virus infection, and this screening method may be generalizable for drug repositioning to identify new indications for other diseases.
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Affiliation(s)
- Fengming Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Anhui, China
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Biochemistry, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Cong Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Anhui, China
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Biochemistry, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Qiang Liu
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Biochemistry, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Yan Zhao
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Biochemistry, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Yuqing Zhang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Biochemistry, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Yuhao Qin
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Biochemistry, School of Basic Medicine Peking Union Medical College, Beijing, China
| | - Xiao Li
- Genetic Engineering Laboratory, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Chang Li
- Genetic Engineering Laboratory, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Congzhao Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Anhui, China
- * E-mail: (CZ); (NJ); (CJ)
| | - Ningyi Jin
- Genetic Engineering Laboratory, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
- * E-mail: (CZ); (NJ); (CJ)
| | - Chengyu Jiang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, Department of Biochemistry, School of Basic Medicine Peking Union Medical College, Beijing, China
- * E-mail: (CZ); (NJ); (CJ)
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28
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Morris G, Puri BK, Carvalho A, Maes M, Berk M, Ruusunen A, Olive L. Induced Ketosis as a Treatment for Neuroprogressive Disorders: Food for Thought? Int J Neuropsychopharmacol 2020; 23:366-384. [PMID: 32034911 PMCID: PMC7311648 DOI: 10.1093/ijnp/pyaa008] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 01/05/2020] [Accepted: 02/06/2020] [Indexed: 12/12/2022] Open
Abstract
Induced ketosis (or ketone body ingestion) can ameliorate several changes associated with neuroprogressive disorders, including schizophrenia, bipolar disorder, and major depressive disorder. Thus, the effects of glucose hypometabolism can be bypassed through the entry of beta-hydroxybutyrate, providing an alternative source of energy to glucose. The weight of evidence suggests that induced ketosis reduces levels of oxidative stress, mitochondrial dysfunction, and inflammation-core features of the above disorders. There are also data to suggest that induced ketosis may be able to target other molecules and signaling pathways whose levels and/or activity are also known to be abnormal in at least some patients suffering from these illnesses such as peroxisome proliferator-activated receptors, increased activity of the Kelch-like ECH-associated protein/nuclear factor erythroid 2-related factor 2, Sirtuin-1 nuclear factor-κB p65, and nicotinamide adenine dinucleotide (NAD). This review explains the mechanisms by which induced ketosis might reduce mitochondrial dysfunction, inflammation, and oxidative stress in neuropsychiatric disorders and ameliorate abnormal levels of molecules and signaling pathways that also appear to contribute to the pathophysiology of these illnesses. This review also examines safety data relating to induced ketosis over the long term and discusses the design of future studies.
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Affiliation(s)
- Gerwyn Morris
- The Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Australia
| | - Basant K Puri
- C.A.R., Cambridge, United Kingdom,Hammersmith Hospital, London, United Kingdom
| | - Andre Carvalho
- Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Michael Maes
- Department of Psychiatry and Medical Psychology, Medical Faculty, Medical University of Plovdiv, Plovdiv, Bulgaria,Department of Psychiatry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Michael Berk
- The Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Australia,Orygen, The National Centre of Excellence in Youth Mental Health, the Department of Psychiatry, and the Florey Institute for Neuroscience and Mental Health, University of Melbourne, Australia,Correspondence: Michael Berk, PO Box 281 Geelong, Victoria 3220 Australia ()
| | - Anu Ruusunen
- The Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Australia
| | - Lisa Olive
- The Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Deakin University, Australia
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29
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Lin H, Wang X. The effects of gasotransmitters on bronchopulmonary dysplasia. Eur J Pharmacol 2020; 873:172983. [PMID: 32017936 DOI: 10.1016/j.ejphar.2020.172983] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 01/22/2020] [Accepted: 01/31/2020] [Indexed: 02/06/2023]
Abstract
Bronchopulmonary dysplasia (BPD), which remains a major clinical problem for preterm infants, is caused mainly by hyperoxia, mechanical ventilation and inflammation. Many approaches have been developed with the aim of decreasing the incidence of or alleviating BPD, but effective methods are still lacking. Gasotransmitters, a type of small gas molecule that can be generated endogenously, exert a protective effect against BPD-associated lung injury; nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S) are three such gasotransmitters. The protective effects of NO have been extensively studied in animal models of BPD, but the results of these studies are inconsistent with those of clinical trials. NO inhalation seems to have no effect on BPD, although side effects have been reported. NO inhalation is not recommended for BPD treatment in preterm infants, except those with severe pulmonary hypertension. Both CO and H2S decreased lung injury in BPD rodent models in preclinical studies. Another small gas molecule, hydrogen, exerts a protective effect against BPD. The nuclear factor erythroid-derived 2 (Nrf2)/heme oxygenase-1 (HO-1) axis seems to play a central role in the protective effect of these gasotransmitters on BPD. Gasotransmitters play important roles in mammals, but further clinical trials are needed to explore their effects on BPD.
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Affiliation(s)
- Hai Lin
- Department of Traditional Chinese Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, PR China
| | - Xinbao Wang
- Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, PR China.
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Abstract
Significance: Redox homeostasis is finely tuned and governed by distinct intracellular mechanisms. The dysregulation of this either by external or internal events is a fundamental pathophysiologic base for many pulmonary diseases. Recent Advances: Based on recent discoveries, it is increasingly clear that cellular redox state and oxidation of signaling molecules are critical modulators of lung disease and represent a final common pathway that leads to poor respiratory outcomes. Critical Issues: Based on the wide variety of stimuli that alter specific redox signaling pathways, improved understanding of the disease and patient-specific alterations are needed for the development of therapeutic targets. Further Directions: For the full comprehension of redox signaling in pulmonary disease, it is essential to recognize the role of reactive oxygen intermediates in modulating biological responses. This review summarizes current knowledge of redox signaling in pulmonary development and pulmonary vascular disease.
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Affiliation(s)
- Gaston Ofman
- Redox Biology Laboratory, Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
| | - Trent E Tipple
- Redox Biology Laboratory, Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama
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31
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Ofman G, Tipple TE. Antioxidants & bronchopulmonary dysplasia: Beating the system or beating a dead horse? Free Radic Biol Med 2019; 142:138-145. [PMID: 30769161 DOI: 10.1016/j.freeradbiomed.2019.01.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/13/2019] [Accepted: 01/28/2019] [Indexed: 12/21/2022]
Abstract
Preterm birth is a primary cause of worldwide childhood mortality. Bronchopulmonary dysplasia, characterized by impaired alveolar and lung vascular development, affects 25-50% of extremely low birth weight (BW; <1 kg) infants. Abnormalities in lung function persist into childhood in affected infants and are second only to asthma in terms of childhood respiratory disease healthcare costs. While advances in the medical care of preterm infants have reduced mortality, the incidence of BPD has not decreased in the past 10 years. Reactive oxygen intermediates play a key role in the development of lung disease but, despite promising preclinical therapies, antioxidants have failed to translate into meaningful clinical interventions to decrease the incidence of lung disease in premature infants. In this review we will summarize the state of the art research developments in regards to antioxidants and premature lung disease and discuss the limitations of antioxidant therapies in order to more fully comprehend the reasons why therapeutic antioxidant administration failed to prevent BPD. Finally we will review promising therapeutic strategies and targets.
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Affiliation(s)
- Gaston Ofman
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Trent E Tipple
- Division of Neonatology, Neonatal Redox Biology Laboratory, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
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Tiono J, Surate Solaligue DE, Mižíková I, Nardiello C, Vadász I, Böttcher-Friebertshäuser E, Ehrhardt H, Herold S, Seeger W, Morty RE. Mouse genetic background impacts susceptibility to hyperoxia-driven perturbations to lung maturation. Pediatr Pulmonol 2019; 54:1060-1077. [PMID: 30848059 DOI: 10.1002/ppul.24304] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 02/08/2019] [Accepted: 02/10/2019] [Indexed: 01/02/2023]
Abstract
BACKGROUND The laboratory mouse is widely used in preclinical models of bronchopulmonary dysplasia, where lung alveolarization is stunted by exposure of pups to hyperoxia. Whether the diverse genetic backgrounds of different inbred mouse strains impacts lung development in newborn mice exposed to hyperoxia has not been systematically assessed. METHODS Hyperoxia (85% O2 , 14 days)-induced perturbations to lung alveolarization were assessed by design-based stereology in C57BL/6J, BALB/cJ, FVB/NJ, C3H/HeJ, and DBA/2J inbred mouse strains. The expression of components of the lung antioxidant machinery was assessed by real-time reverse transcriptase polymerase chain reaction and immunoblot. RESULTS Hyperoxia-reduced lung alveolar density in all five mouse strains to different degrees (C57BL/6J, 64.8%; FVB/NJ, 47.4%; BALB/cJ, 46.4%; DBA/2J, 45.9%; and C3H/HeJ, 35.9%). Hyperoxia caused a 94.5% increase in mean linear intercept in the C57BL/6J strain, whilst the C3H/HeJ strain was the least affected (31.6% increase). In contrast, hyperoxia caused a 65.4% increase in septal thickness in the FVB/NJ strain, where the C57BL/6J strain was the least affected (30.3% increase). The expression of components of the lung antioxidant machinery in response to hyperoxia was strain dependent, with the C57BL/6J strain exhibiting the most dramatic engagement. Baseline expression levels of components of the lung antioxidant systems were different in the five mouse strains studied, under both normoxic and hyperoxic conditions. CONCLUSION The genetic background of laboratory mouse strains dramatically influenced the response of the developing lung to hyperoxic insult. This might be explained, at least in part, by differences in how antioxidant systems are engaged by different mouse strains after hyperoxia exposure.
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Affiliation(s)
- Jennifer Tiono
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Universities of Giessen and Marburg Lung Center, member of The German Center for Lung Research (DZL), Giessen, Germany
| | - David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Universities of Giessen and Marburg Lung Center, member of The German Center for Lung Research (DZL), Giessen, Germany
| | - Ivana Mižíková
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Universities of Giessen and Marburg Lung Center, member of The German Center for Lung Research (DZL), Giessen, Germany
| | - Claudio Nardiello
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Universities of Giessen and Marburg Lung Center, member of The German Center for Lung Research (DZL), Giessen, Germany
| | - István Vadász
- Department of Internal Medicine (Pulmonology), Universities of Giessen and Marburg Lung Center, member of The German Center for Lung Research (DZL), Giessen, Germany
| | | | - Harald Ehrhardt
- Division of General Pediatrics and Neonatology, University Children's Hospital Giessen, Justus Liebig, University, Giessen, Germany
| | - Susanne Herold
- Department of Internal Medicine (Pulmonology), Universities of Giessen and Marburg Lung Center, member of The German Center for Lung Research (DZL), Giessen, Germany
| | - Werner Seeger
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Universities of Giessen and Marburg Lung Center, member of The German Center for Lung Research (DZL), Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, member of the German Center for Lung Research (DZL), Bad Nauheim, Germany.,Department of Internal Medicine (Pulmonology), Universities of Giessen and Marburg Lung Center, member of The German Center for Lung Research (DZL), Giessen, Germany
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Jiang C, Stewart LT, Kuo HC, McGilberry W, Wall SB, Liang B, van Groen T, Bailey SM, Kim YI, Tipple TE, Jones DP, McMahon LL, Liu RM. Cyclic O 3 exposure synergizes with aging leading to memory impairment in male APOE ε3, but not APOE ε4, targeted replacement mice. Neurobiol Aging 2019; 81:9-21. [PMID: 31207469 DOI: 10.1016/j.neurobiolaging.2019.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 03/25/2019] [Accepted: 05/09/2019] [Indexed: 10/26/2022]
Abstract
The etiology of late-onset Alzheimer's disease is unknown. Recent epidemiological studies suggest that exposure to high levels of ozone (O3) may be a risk factor for late-onset Alzheimer's disease. Nonetheless, whether and how O3 exposure contributes to AD development remains to be determined. In this study, we tested the hypothesis that O3 exposure synergizes with the genetic risk factor APOE ε4 and aging leading to AD, using male apolipoprotein E (apoE)4 and apoE3 targeted replacement mice as men have increased risk exposure to high levels of O3 via working environments and few studies have addressed APOE ε4 effects on males. Surprisingly, our results show that O3 exposure impairs memory in old apoE3, but not old apoE4 or young apoE3 and apoE4, male mice. Further studies show that old apoE4 mice have increased hippocampal activities or expression of some enzymes involved in antioxidant defense, diminished protein oxidative modification, and neuroinflammation following O3 exposure compared with old apoE3 mice. These novel findings highlight the complexity of interactions between APOE genotype, age, and environmental exposure in AD development.
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Affiliation(s)
- Chunsun Jiang
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Luke T Stewart
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hui-Chien Kuo
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - William McGilberry
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Stephanie B Wall
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Bill Liang
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Thomas van Groen
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Young-Il Kim
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Trent E Tipple
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Dean P Jones
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Lori L McMahon
- Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rui-Ming Liu
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
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Endesfelder S, Strauß E, Scheuer T, Schmitz T, Bührer C. Antioxidative effects of caffeine in a hyperoxia-based rat model of bronchopulmonary dysplasia. Respir Res 2019; 20:88. [PMID: 31077204 PMCID: PMC6511176 DOI: 10.1186/s12931-019-1063-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/30/2019] [Indexed: 02/07/2023] Open
Abstract
Background While additional oxygen supply is often required for the survival of very premature infants in intensive care, this also brings an increasing risk of progressive lung diseases and poor long-term lung outcomes. Caffeine is administered to neonates in neonatal intensive care for the prevention and treatment of apneas and has been shown to reduce BPD incidence and the need for mechanical ventilation, although it is still unclear whether this is due to a direct pulmonary action via antagonism of adenosine receptors and/or an indirect action. This experimental study aims to investigate the action of caffeine on the oxidative stress response in pulmonary tissue in a hyperoxia-based model of bronchopulmonary dysplasia in newborn rats. Methods Newborn Wistar rats were exposed to 21% or 80% oxygen for 3 (P3) or 5 (P5) postnatal days with or without recovery on room air until postnatal day 15 (P15) and treated with vehicle or caffeine (10 mg/kg) every 48 h beginning on the day of birth. The lung tissue of the rat pups was examined for oxidative stress response at P3 and P5 immediately after oxygen exposure or after recovery in ambient air (P15) by immunohistological staining and analysis of lung homogenates by ELISA and qPCR. Results Lungs of newborn rats, corresponding to the saccular stage of lung development and to the human lung developmental stage of preterms, showed increased rates of total glutathione and hydrogen peroxide, oxidative damage to DNA and lipids, and induction of second-phase mediators of antioxidative stress response (superoxide dismutase, heme oxygenase-1, and the Nrf2/Keap1 system) in response to hyperoxia. Caffeine reduced oxidative DNA damage and had a protective interference with the oxidative stress response. Conclusion In addition to the pharmacological antagonism of adenosine receptors, caffeine appears to be a potent antioxidant and modulates the hyperoxia-induced pulmonary oxidative stress response and thus protective properties in the BPD-associated animal model. Free-radical-induced damage caused by oxidative stress seems to be a biological mechanism progress of newborn diseases. New aspects of antioxidative therapeutic strategies to passivate oxidative stress-related injury should be in focus of further investigations. Electronic supplementary material The online version of this article (10.1186/s12931-019-1063-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Stefanie Endesfelder
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Evelyn Strauß
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Till Scheuer
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Thomas Schmitz
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Christoph Bührer
- Department of Neonatology, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
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Thioredoxin Reductase-1 Inhibition Augments Endogenous Glutathione-Dependent Antioxidant Responses in Experimental Bronchopulmonary Dysplasia. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7945983. [PMID: 30805084 PMCID: PMC6360549 DOI: 10.1155/2019/7945983] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 11/25/2018] [Indexed: 12/28/2022]
Abstract
Background Aurothioglucose- (ATG-) mediated inhibition of thioredoxin reductase-1 (TXNRD1) improves alveolarization in experimental murine bronchopulmonary dysplasia (BPD). Glutathione (GSH) mediates susceptibility to neonatal and adult oxidative lung injury. We have previously shown that ATG attenuates hyperoxic lung injury and enhances glutathione- (GSH-) dependent antioxidant defenses in adult mice. Hypothesis The present studies evaluated the effects of TXNRD1 inhibition on GSH-dependent antioxidant defenses in newborn mice in vivo and lung epithelia in vitro. Methods Newborn mice received intraperitoneal ATG or saline prior to room air or 85% hyperoxia exposure. Glutamate-cysteine ligase (GCL) catalytic (Gclc) and modifier (Gclm) mRNA levels, total GSH levels, total GSH peroxidase (GPx) activity, and Gpx2 expression were determined in lung homogenates. In vitro, murine transformed club cells (mtCCs) were treated with the TXNRD1 inhibitor auranofin (AFN) or vehicle in the presence or absence of the GCL inhibitor buthionine sulfoximine (BSO). Results In vivo, ATG enhanced hyperoxia-induced increases in Gclc mRNA levels, total GSH contents, and GPx activity. In vitro, AFN increased Gclm mRNA levels, intracellular and extracellular GSH levels, and GPx activity. BSO prevented AFN-induced increases in GSH levels. Conclusions Our data are consistent with a model in which TXNRD1 inhibition augments hyperoxia-induced GSH-dependent antioxidant responses in neonatal mice. Discrepancies between in vivo and in vitro results highlight the need for methodologies that permit accurate assessments of the GSH system at the single-cell level.
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Role of Nrf2 and Its Activators in Respiratory Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7090534. [PMID: 30728889 PMCID: PMC6341270 DOI: 10.1155/2019/7090534] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 11/22/2018] [Accepted: 12/03/2018] [Indexed: 02/07/2023]
Abstract
Transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) is a major regulator of antioxidant response element- (ARE-) driven cytoprotective protein expression. The activation of Nrf2 signaling plays an essential role in preventing cells and tissues from injury induced by oxidative stress. Under the unstressed conditions, natural inhibitor of Nrf2, Kelch-like ECH-associated protein 1 (Keap1), traps Nrf2 in the cytoplasm and promotes the degradation of Nrf2 by the 26S proteasome. Nevertheless, stresses including highly oxidative microenvironments, impair the ability of Keap1 to target Nrf2 for ubiquitination and degradation, and induce newly synthesized Nrf2 to translocate to the nucleus to bind with ARE. Due to constant exposure to external environments, including diverse pollutants and other oxidants, the redox balance maintained by Nrf2 is fairly important to the airways. To date, researchers have discovered that Nrf2 deletion results in high susceptibility and severity of insults in various models of respiratory diseases, including bronchopulmonary dysplasia (BPD), respiratory infections, acute respiratory distress syndrome (ARDS), chronic obstructive pulmonary disease (COPD), asthma, idiopathic pulmonary fibrosis (IPF), and lung cancer. Conversely, Nrf2 activation confers protective effects on these lung disorders. In the present review, we summarize Nrf2 involvement in the pathogenesis of the above respiratory diseases that have been identified by experimental models and human studies and describe the protective effects of Nrf2 inducers on these diseases.
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Sallon C, Provost PR, LeBlanc D, Soulet D, Tremblay Y. Essential Intracrine Androgenic Action in Lung Development for Both Sexes. J Steroid Biochem Mol Biol 2018; 183:184-191. [PMID: 29940312 DOI: 10.1016/j.jsbmb.2018.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 05/30/2018] [Accepted: 06/19/2018] [Indexed: 11/22/2022]
Abstract
Albeit their recognized negative effects on lung maturation, androgens have been proposed to play an essential positive role in lung development. This work aimed to evaluate the impact of blocking endogenous androgen and estrogen actions and to study the effect of an excess of androgen and estrogen during the end of saccular stage and the beginning of the alveolar stage on lung development. This was performed with normal oxygen atmosphere and with hyperoxia, a model of alveolar simplification, which is observed in new bronchopulmonary dysplasia. Mouse lung samples were collected on postnatal day 9 after exposure to 21% or 80% oxygen (postnatal days 1 to 4), and after administration (postnatal days 3 to 8) of vehicle, pure antiandrogen (flutamide), dihydrotestosterone, pure antiestrogen (fulvestrant), or 17β-estradiol. With 21% oxygen, the major effects on morphometric parameters were induced by flutamide. In contrast, with hyperoxia, both flutamide and dihydrotestosterone had similar effects on several morphometric parameters. For instance, a decrease in the relative frequency of closed areas (mainly composed of saccules/alveoli) < 1000 μm2 and an increase for those > 2500 μm2 were observed after flutamide administration. In conclusion, during the junction between the saccular and the alveolar stages, endogenous androgens play an essential intracrine role in lung development for both sexes while an excess of androgens are deleterious when combined with a hyperoxia treatment, but not with normal oxygen levels. Endogenous estrogens have no effects on the lungs during the developmental window studied, while exogenous estrogens had only isolated effects on some morphometric parameters.
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Affiliation(s)
- Céline Sallon
- Axe reproduction, santé de la mère et de l'enfant, Centre de recherche du CHU de Québec, Québec, QC, Canada; Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Pierre R Provost
- Axe reproduction, santé de la mère et de l'enfant, Centre de recherche du CHU de Québec, Québec, QC, Canada; Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Faculté de médecine, Université Laval, Québec, QC, Canada; Département d'obstétrique/gynécologie & reproduction, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Danahé LeBlanc
- Axe neuroscience, Centre de recherche du CHU de Québec, Québec, QC, Canada
| | - Denis Soulet
- Axe neuroscience, Centre de recherche du CHU de Québec, Québec, QC, Canada; Faculté de pharmacie, Université Laval, Québec, QC, Canada
| | - Yves Tremblay
- Axe reproduction, santé de la mère et de l'enfant, Centre de recherche du CHU de Québec, Québec, QC, Canada; Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Faculté de médecine, Université Laval, Québec, QC, Canada; Département d'obstétrique/gynécologie & reproduction, Faculté de médecine, Université Laval, Québec, QC, Canada.
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Tindell R, Wall SB, Li Q, Li R, Dunigan K, Wood R, Tipple TE. Selenium supplementation of lung epithelial cells enhances nuclear factor E2-related factor 2 (Nrf2) activation following thioredoxin reductase inhibition. Redox Biol 2018; 19:331-338. [PMID: 30212802 PMCID: PMC6134185 DOI: 10.1016/j.redox.2018.07.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/17/2018] [Accepted: 07/26/2018] [Indexed: 11/24/2022] Open
Abstract
The trace element selenium (Se) contributes to redox signaling, antioxidant defense, and immune responses in critically ill neonatal and adult patients. Se is required for the synthesis and function of selenoenzymes including thioredoxin (Trx) reductase-1 (TXNRD1) and glutathione peroxidases (GPx). We have previously identified TXNRD1, primarily expressed by airway epithelia, as a promising therapeutic target to prevent lung injury, likely via nuclear factor E2-related factor 2 (Nrf2)-dependent mechanisms. The present studies utilized the TXNRD1 inhibitor auranofin (AFN) to test the hypothesis that Se positively influences Nrf2 activation and selenoenzyme responses in lung epithelial cells. Murine transformed Club cells (mtCCs) were supplemented with 0, 10, 25, or 100 nM Na2SeO3 to create a range of Se conditions and were cultured in the presence or absence of 0.5 μM AFN. TXNRD1 and GPX2 protein expression and enzymatic activity were significantly greater upon Se supplementation (p < 0.05). AFN treatment (0.5 μM AFN for 1 h) significantly inhibited TXNRD1 but not GPx activity (p < 0.001). Recovery of TXNRD1 activity following AFN treatment was significantly enhanced by Se supplementation (p < 0.041). Finally, AFN-induced Nrf2 transcriptional activation was significantly greater in mtCCs supplemented in 25 or 100 nM Na2SeO3 when compared to non-supplemented controls (p < 0.05). Our novel studies indicate that Se levels positively influence Nrf2 activation and selenoenzyme responses following TXNRD1 inhibition. These data suggest that Se status significantly influences physiologic responses to TXNRD1 inhibitors. In conclusion, correction of clinical Se deficiency, if present, will be necessary for optimal therapeutic effectiveness of TXNRD1 inhibitors in the prevention of lung disease.
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Affiliation(s)
- Rachael Tindell
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Stephanie B Wall
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Qian Li
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rui Li
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Katelyn Dunigan
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rachael Wood
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Trent E Tipple
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, USA.
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Dunigan K, Li Q, Li R, Locy ML, Wall S, Tipple TE. The thioredoxin reductase inhibitor auranofin induces heme oxygenase-1 in lung epithelial cells via Nrf2-dependent mechanisms. Am J Physiol Lung Cell Mol Physiol 2018; 315:L545-L552. [PMID: 30024305 PMCID: PMC6230877 DOI: 10.1152/ajplung.00214.2018] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 11/22/2022] Open
Abstract
Thioredoxin reductase-1 (TXNRD1) inhibition effectively activates nuclear factor (erythroid-derived 2)-like 2 (Nrf2) responses and attenuates lung injury in acute respiratory distress syndrome (ARDS) and bronchopulmonary dysplasia (BPD) models. Upon TXNRD1 inhibition, heme oxygenase-1 (HO-1) is disproportionally increased compared with Nrf2 target NADPH quinone oxidoreductase-1 (Nqo1). HO-1 has been investigated as a potential therapeutic target in both ARDS and BPD. TXNRD1 is predominantly expressed in airway epithelial cells; however, the mechanism of HO-1 induction by TXNRD1 inhibitors is unknown. We tested the hypothesis that TXNRD1 inhibition induces HO-1 via Nrf2-dependent mechanisms. Wild-type (WT), Nrf2KO1.3, and Nrf2KO2.2 cells were morphologically indistinguishable, indicating that Nrf2 can be deleted from murine-transformed club cells (mtCCs) using CRISPR/Cas9 gene editing. Hemin, a Nrf2-independent HO-1-inducing agent, significantly increased HO-1 expression in WT, Nrf2KO1.3, and Nrf2KO2.2. Auranofin (AFN) (0.5 µM) inhibited TXNRD1 activity by 50% and increased Nqo1 and Hmox1 mRNA levels by 6- and 24-fold, respectively, in WT cells. Despite similar levels of TXNRD1 inhibition, Nqo1 mRNA levels were not different between control and AFN-treated Nrf2KO1.3 and Nrf2KO2.2. AFN slightly increased Hmox1 mRNA levels in Nrf2KO1.3 and Nrf2KO2.2 cells compared with controls. AFN failed to increase HO-1 protein in Nrf2KO1.3 and Nrf2KO2.2 compared with a 36-fold increase in WT mtCCs. Our data indicate that Nrf2 is the primary mechanism by which TXNRD1 inhibitors increase HO-1 in lung epithelia. Future studies will use ARDS and BPD models to define the role of HO-1 in attenuation of lung injury by TXNRD1 inhibitors.
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Affiliation(s)
- Katelyn Dunigan
- Neonatal Redox Biology Laboratory, Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
- University of Alabama at Birmingham , Birmingham, Alabama
| | - Qian Li
- Neonatal Redox Biology Laboratory, Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
- University of Alabama at Birmingham , Birmingham, Alabama
| | - Rui Li
- Neonatal Redox Biology Laboratory, Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
- University of Alabama at Birmingham , Birmingham, Alabama
| | - Morgan L Locy
- University of Alabama at Birmingham , Birmingham, Alabama
| | - Stephanie Wall
- Neonatal Redox Biology Laboratory, Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
- University of Alabama at Birmingham , Birmingham, Alabama
| | - Trent E Tipple
- Neonatal Redox Biology Laboratory, Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
- University of Alabama at Birmingham , Birmingham, Alabama
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Pabelick CM, Thompson MA, Britt RD. Effects of Hyperoxia on the Developing Airway and Pulmonary Vasculature. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 967:179-194. [PMID: 29047087 DOI: 10.1007/978-3-319-63245-2_11] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Although it is necessary and part of standard practice, supplemental oxygen (40-90% O2) or hyperoxia is a significant contributing factor to development of bronchopulmonary dysplasia, persistent pulmonary hypertension, recurrent wheezing, and asthma in preterm infants. This chapter discusses hyperoxia and the role of redox signaling in the context of neonatal lung growth and disease. Here, we discuss how hyperoxia promotes dysfunction in the airway and the known redox-mediated mechanisms that are important for postnatal vascular and alveolar development. Whether in the airway or alveoli, redox pathways are important and greatly influence the neonatal lung.
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Affiliation(s)
- Christina M Pabelick
- Department of Anesthesiology, College of Medicine, Mayo Clinic, 4-184 W Jos SMH, 200 First St SW, Rochester, MN, 55905, USA. .,Departments Physiology and Biomedical Engineering, College of Medicine, Mayo Clinic, 4-184 W Jos SMH, 200 First St SW, Rochester, MN, 55905, USA.
| | - Michael A Thompson
- Department of Anesthesiology, College of Medicine, Mayo Clinic, 4-184 W Jos SMH, 200 First St SW, Rochester, MN, 55905, USA
| | - Rodney D Britt
- Departments Physiology and Biomedical Engineering, College of Medicine, Mayo Clinic, 4-184 W Jos SMH, 200 First St SW, Rochester, MN, 55905, USA
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Li Q, Li R, Wall SB, Dunigan K, Ren C, Jilling T, Rogers LK, Tipple TE. Aurothioglucose does not improve alveolarization or elicit sustained Nrf2 activation in C57BL/6 models of bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2018; 314:L736-L742. [PMID: 29368550 DOI: 10.1152/ajplung.00539.2017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
We previously showed that the thioredoxin reductase-1 (TrxR1) inhibitor aurothioglucose (ATG) improves alveolarization in hyperoxia-exposed newborn C3H/HeN mice. Our data supported a mechanism by which the protective effects of ATG are mediated via sustained nuclear factor E2-related factor 2 (Nrf2) activation in hyperoxia-exposed C3H/HeN mice 72 h after ATG administration. Given that inbred mouse strains have differential sensitivity and endogenous Nrf2 activation by hyperoxia, the present studies utilized two C57BL/6 exposure models to evaluate the effects of ATG on lung development and Nrf2 activation. The first model (0-14 days) was used in our C3H/HeN studies and the 2nd model (4-14 days) is well characterized in C57BL/6 mice. ATG significantly inhibited lung TrxR1 activity in both models; however, there was no effect on parameters of alveolarization in C57BL/6 mice. In sharp contrast to C3H/HeN mice, there was no effect of ATG on pulmonary NADPH quinone oxidoreductase-1 ( Nqo1) and heme oxygenase-1 ( Hmox1) at 72 h in either C57BL/6 model. In conclusion, although ATG inhibited TrxR1 activity in the lungs of newborn C57BL/6 mice, effects on lung development and sustained Nrf2-dependent pulmonary responses were blunted. These findings also highlight the importance of strain-dependent hyperoxic sensitivity in evaluation of potential novel therapies.
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Affiliation(s)
- Qian Li
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham , Birmingham, Alabama.,Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
| | - Rui Li
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham , Birmingham, Alabama.,Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
| | - Stephanie B Wall
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham , Birmingham, Alabama.,Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
| | - Katelyn Dunigan
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham , Birmingham, Alabama.,Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
| | - Changchun Ren
- Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
| | - Tamas Jilling
- Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
| | - Lynette K Rogers
- Center for Perinatal Research, Research Institute at Nationwide Children's Hospital , Columbus, Ohio
| | - Trent E Tipple
- Neonatal Redox Biology Laboratory, University of Alabama at Birmingham , Birmingham, Alabama.,Department of Pediatrics, University of Alabama at Birmingham , Birmingham, Alabama
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Tan F, Dong W, Lei X, Liu X, Li Q, Kang L, Zhao S, Zhang C. Attenuated SUMOylation of sirtuin 1 in premature neonates with bronchopulmonary dysplasia. Mol Med Rep 2017; 17:1283-1288. [PMID: 29115559 DOI: 10.3892/mmr.2017.8012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 09/09/2017] [Indexed: 11/06/2022] Open
Abstract
A prospective study was performed to investigate the effects of hyperoxia on the expression of small ubiquitin‑related modifier (SUMO) and sirtuin 1 (SIRT1) proteins, and to examine interactions between these proteins in premature neonates with bronchopulmonary dysplasia (BPD). Peripheral blood mononuclear cells (PBMCs) were isolated from residual venous blood samples of 20 premature infants with BPD and 20 gender‑matched premature infants without BPD (non‑BPD group). Expression levels of SUMO and SIRT1 proteins in PBMCs were assessed by western blot analysis, and their interactions in PBMCs were detected using the immunoprecipitation assay. Based on the fraction of inspired oxygen (FiO2) administered, neonates were divided into normoxia, low‑(21%<FiO2<30%), medium‑(30%≤FiO2<40%) and high‑oxygen (FiO2≥40%) groups. Expression levels of SUMO1 and SUMO2/3 proteins in the normoxia group were significantly lower than those in the medium‑ or high‑oxygen groups (P<0.01), but were comparable to those in the low‑oxygen group. SIRT1 expression levels in both the medium‑ and high‑oxygen groups were significantly lower than those in the normoxia group (P<0.01). In the BPD group, the expression of SIRT1 protein was significantly lower (P<0.01), and its interaction with SUMO1 and SUMO2/3 was significantly attenuated compared with that in the non‑BPD group (P<0.01). Supplemental oxygen with FiO2≥30% was associated with upregulation of SUMO1 and SUMO2/3 expression and downregulation of SIRT1 expression. The present findings suggest that decreased SIRT1 expression and its SUMOylation by SUMO1 and SUMO2/3 may be associated with the development of BPD.
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Affiliation(s)
- Fengmei Tan
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Wenbin Dong
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Xiaoping Lei
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Xingling Liu
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Qingping Li
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Lan Kang
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Shuai Zhao
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Chan Zhang
- Department of Neonatology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
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Surate Solaligue DE, Rodríguez-Castillo JA, Ahlbrecht K, Morty RE. Recent advances in our understanding of the mechanisms of late lung development and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2017; 313:L1101-L1153. [PMID: 28971976 DOI: 10.1152/ajplung.00343.2017] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 09/23/2017] [Indexed: 02/08/2023] Open
Abstract
The objective of lung development is to generate an organ of gas exchange that provides both a thin gas diffusion barrier and a large gas diffusion surface area, which concomitantly generates a steep gas diffusion concentration gradient. As such, the lung is perfectly structured to undertake the function of gas exchange: a large number of small alveoli provide extensive surface area within the limited volume of the lung, and a delicate alveolo-capillary barrier brings circulating blood into close proximity to the inspired air. Efficient movement of inspired air and circulating blood through the conducting airways and conducting vessels, respectively, generates steep oxygen and carbon dioxide concentration gradients across the alveolo-capillary barrier, providing ideal conditions for effective diffusion of both gases during breathing. The development of the gas exchange apparatus of the lung occurs during the second phase of lung development-namely, late lung development-which includes the canalicular, saccular, and alveolar stages of lung development. It is during these stages of lung development that preterm-born infants are delivered, when the lung is not yet competent for effective gas exchange. These infants may develop bronchopulmonary dysplasia (BPD), a syndrome complicated by disturbances to the development of the alveoli and the pulmonary vasculature. It is the objective of this review to update the reader about recent developments that further our understanding of the mechanisms of lung alveolarization and vascularization and the pathogenesis of BPD and other neonatal lung diseases that feature lung hypoplasia.
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Affiliation(s)
- David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - José Alberto Rodríguez-Castillo
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Katrin Ahlbrecht
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and .,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
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Role of the Nrf2/HO-1 axis in bronchopulmonary dysplasia and hyperoxic lung injuries. Clin Sci (Lond) 2017; 131:1701-1712. [PMID: 28667068 DOI: 10.1042/cs20170157] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 05/11/2017] [Accepted: 05/16/2017] [Indexed: 12/23/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is a chronic illness that usually originates in preterm newborns. Generally, BPD is a consequence of respiratory distress syndrome (RDS) which, in turn, comes from the early arrest of lung development and the lack of pulmonary surfactant. The need of oxygen therapy to overcome premature newborns' compromised respiratory function generates an increasing amount of reactive oxygen species (ROS), the onset of sustained oxidative stress (OS) status, and inflammation in the pulmonary alveoli deputies to respiratory exchanges. BPD is a severe and potentially life-threatening disorder that in the most serious cases, can open the way to neurodevelopmental delay. More importantly, there is no adequate intervention to hamper or treat BPD. This perspective article seeks to review the most recent and relevant literature describing the very early stages of BPD and hyperoxic lung injuries focussing on nuclear factor erythroid derived 2 (Nrf2)/heme oxygenase-1 (HO-1) axis. Indeed, Nrf2/HO1 activation in response to OS induced lung injury in preterm concurs to the induction of certain number of antioxidant, anti-inflammatory, and detoxification pathways that seem to be more powerful than the activation of one single antioxidant gene. These elicited protective effects are able to counteract/mitigate all multifaceted aspects of the disease and may support novel approaches for the management of BPD.
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