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Vázquez-Meza H, Vilchis-Landeros MM, Vázquez-Carrada M, Uribe-Ramírez D, Matuz-Mares D. Cellular Compartmentalization, Glutathione Transport and Its Relevance in Some Pathologies. Antioxidants (Basel) 2023; 12:antiox12040834. [PMID: 37107209 PMCID: PMC10135322 DOI: 10.3390/antiox12040834] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 03/31/2023] Open
Abstract
Reduced glutathione (GSH) is the most abundant non-protein endogenous thiol. It is a ubiquitous molecule produced in most organs, but its synthesis is predominantly in the liver, the tissue in charge of storing and distributing it. GSH is involved in the detoxification of free radicals, peroxides and xenobiotics (drugs, pollutants, carcinogens, etc.), protects biological membranes from lipid peroxidation, and is an important regulator of cell homeostasis, since it participates in signaling redox, regulation of the synthesis and degradation of proteins (S-glutathionylation), signal transduction, various apoptotic processes, gene expression, cell proliferation, DNA and RNA synthesis, etc. GSH transport is a vital step in cellular homeostasis supported by the liver through providing extrahepatic organs (such as the kidney, lung, intestine, and brain, among others) with the said antioxidant. The wide range of functions within the cell in which glutathione is involved shows that glutathione’s role in cellular homeostasis goes beyond being a simple antioxidant agent; therefore, the importance of this tripeptide needs to be reassessed from a broader metabolic perspective.
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Dalle-Donne I, Garavaglia ML, Colombo G, Astori E, Lionetti MC, La Porta CAM, Santucci A, Rossi R, Giustarini D, Milzani A. Cigarette smoke and glutathione: Focus on in vitro cell models. Toxicol In Vitro 2020; 65:104818. [PMID: 32135238 DOI: 10.1016/j.tiv.2020.104818] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/05/2020] [Accepted: 02/28/2020] [Indexed: 01/20/2023]
Abstract
Cigarette smoke (CS) is one of the most important preventable risk factors for the development of respiratory diseases, cardiovascular diseases, stroke, and various types of cancer. Due to its high intracellular concentration and central role in maintaining the cellular redox state, glutathione (GSH) is one of the key players in several enzymatic and non-enzymatic reactions necessary for protecting cells against CS-induced oxidative stress. A plethora of in vitro cell models have been used over the years to assess the effects of CS on intracellular GSH and its disulphide forms, i.e. glutathione disulphide (GSSG) and S-glutathionylated proteins. In this review, we described the effects of cell exposure to CS on cellular GSH and formation of its oxidized forms and adducts (GSH-conjugates). We also discussed the limitations and relevance of in vitro cell models of exposure to CS and critically assessed the congruence between smokers and in vitro cell models. What emerges clearly is that results obtained in vitro should be interpreted with extreme caution, bearing in mind the limitations of the specific cell model used. Despite this, in vitro cell models remain important tools in the assessment of CS-induced oxidative damage.
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Affiliation(s)
- Isabella Dalle-Donne
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy.
| | - Maria L Garavaglia
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy
| | - Graziano Colombo
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy
| | - Emanuela Astori
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy
| | - Maria C Lionetti
- Center for Complexity and Biosystems, Department of Environmental Science and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy
| | - Caterina A M La Porta
- Center for Complexity and Biosystems, Department of Environmental Science and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy
| | - Annalisa Santucci
- Department of Biotechnology, Chemistry and Pharmacy (Department of Excellence 2018-2022), University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Ranieri Rossi
- Department of Biotechnology, Chemistry and Pharmacy (Department of Excellence 2018-2022), University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Daniela Giustarini
- Department of Biotechnology, Chemistry and Pharmacy (Department of Excellence 2018-2022), University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Aldo Milzani
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy
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Hunt WR, Hansen JM, Stecenko AA. Glucose ingestion in cystic fibrosis induces severe redox imbalance: A potential role in diabetes. J Cyst Fibros 2020; 19:476-482. [PMID: 32115389 DOI: 10.1016/j.jcf.2020.02.010] [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: 04/16/2019] [Revised: 01/01/2020] [Accepted: 02/10/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND Cystic fibrosis related diabetes (CFRD) is the most common co-morbidity associated with cystic fibrosis (CF). Individuals with CF demonstrate airway and systemic oxidation compared to people without CF. Furthermore, systemic oxidation precipitated by hyperglycemia in non-CF diabetes has been shown to lead to enhanced inflammation. We hypothesized that the presence of both CF and diabetes in an individual would result in hyperglycemia-induced redox imbalance to an oxidative state. This in turn would result in enhanced production of pro-inflammatory cytokines. METHODS Systemic redox balance and pro-inflammatory cytokines were measured before and following a standard oral glucose tolerance test in healthy controls (HC) and in CF individuals with a spectrum of glucose homeostasis (i.e. normal glucose tolerant - NGT, prediabetes or frank CFRD). RESULTS There were no significant differences between groups in terms of basal or glucose-induced levels of inflammatory markers. However, baseline systemic redox potential was significantly more oxidized in CF subjects with prediabetes and CFRD compared to both CF with NGT and HC. Systemic oxidation was significantly worsened, and to a profound degree, two hours following ingestion of glucose in all CF groups (NGT, prediabetes, and CFRD). The level of redox imbalance at the two hour point was the same in all three CF groups and was not associated with the degree of hyperglycemia. There was a significant correlation between worse systemic oxidation and reduced insulin secretion. CONCLUSIONS This supports a newly identified abnormality of metabolism in CF - glucose induced redox imbalance to the oxidative state.
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Affiliation(s)
- William R Hunt
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Atlanta, GA, USA; Emory+Children's Center for Cystic Fibrosis and Airways Disease Research, Emory University, Atlanta, GA, USA.
| | - Jason M Hansen
- Department of Physiology and Developmental Biology, Brigham Young University, Provo, UT, USA
| | - Arlene A Stecenko
- Emory+Children's Center for Cystic Fibrosis and Airways Disease Research, Emory University, Atlanta, GA, USA; Division of Pulmonary, Allergy/Immunology, Cystic Fibrosis and Sleep, Department of Pediatrics, Atlanta, GA, USA
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4
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Xia S, Zhou C, Kalionis B, Shuang X, Ge H, Gao W. Combined Antioxidant, Anti-inflammaging and Mesenchymal Stem Cell Treatment: A Possible Therapeutic Direction in Elderly Patients with Chronic Obstructive Pulmonary Disease. Aging Dis 2020; 11:129-140. [PMID: 32010487 PMCID: PMC6961773 DOI: 10.14336/ad.2019.0508] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 05/08/2019] [Indexed: 12/19/2022] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is a worldwide health problem associated with high morbidity and mortality, especially in elderly patients. Aging functions include mitochondrial dysfunction, cell-to-cell information exchange, protein homeostasis and extracellular matrix dysregulation, which are closely related to chronic inflammatory response and oxidation-antioxidant imbalance in the pathogenesis of COPD. COPD displays distinct inflammaging features, including increased cellular senescence and oxidative stress, stem cell exhaustion, alterations in the extracellular matrix, reduced levels of endogenous anti-inflammaging molecules, and reduced autophagy. Given that COPD and inflammaging share similar general features, it is very important to identify the specific mechanisms of inflammaging, which involve oxidative stress, inflammation and lung mesenchymal stem cell function in the development of COPD, especially in elderly COPD patients. In this review, we highlight the studies relevant to COPD progression, and focus on mechanisms associated with inflammaging.
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Affiliation(s)
- Shijin Xia
- 1Shanghai Institute of Geriatrics, Huadong Hospital, Fudan University, Shanghai, China
| | - Changxi Zhou
- 2Department of Respiratory Medicine, The Second Medical Center of PLA General Hospital, Beijing, China
| | - Bill Kalionis
- 3Department of Maternal-Fetal Medicine Pregnancy Research Centre and University of Melbourne Department of Obstetrics and Gynaecology, Royal Women's Hospital, Parkville, Victoria, Australia
| | - Xiaoping Shuang
- 4Department of Cardiovascular Diseases, Xiangyang Hospital of Traditional Chinese Medicine, Xiangyang, Hubei, China
| | - Haiyan Ge
- 5Department of Pulmonary Diseases, Huadong Hospital, Fudan University, Shanghai, China
| | - Wen Gao
- 6Department of Thoracic Surgery, Huadong Hospital, Fudan University, Shanghai, China
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5
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Causer AJ, Shute JK, Cummings MH, Shepherd AI, Gruet M, Costello JT, Bailey S, Lindley M, Pearson C, Connett G, Allenby MI, Carroll MP, Daniels T, Saynor ZL. Circulating biomarkers of antioxidant status and oxidative stress in people with cystic fibrosis: A systematic review and meta-analysis. Redox Biol 2020; 32:101436. [PMID: 32044291 PMCID: PMC7264436 DOI: 10.1016/j.redox.2020.101436] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 02/03/2023] Open
Abstract
Introduction Oxidative stress may play an important role in the pathophysiology of cystic fibrosis (CF). This review aimed to quantify CF-related redox imbalances. Methods Systematic searches of the Medline, CINAHL, CENTRAL and PsycINFO databases were conducted. Mean content of blood biomarkers from people with clinically-stable CF and non-CF controls were used to calculate the standardized mean difference (SMD) and 95% confidence intervals (95% CI). Results Forty-nine studies were eligible for this review including a total of 1792 people with CF and 1675 controls. Meta-analysis revealed that protein carbonyls (SMD: 1.13, 95% CI: 0.48 to 1.77), total F2-isoprostane 8-iso-prostaglandin F2α (SMD: 0.64, 95% CI: 0.23 to 1.05) and malondialdehyde (SMD: 1.34, 95% CI: 0.30 to 2.39) were significantly higher, and vitamins A (SMD: −0.66, 95% CI -1.14 to −0.17) and E (SMD: −0.74, 95% CI: −1.28 to −0.20), β-carotene (SMD: −1.80, 95% CI: −2.92 to −0.67), lutein (SMD: −1.52, 95% CI: −1.83 to −1.20) and albumin (SMD: −0.98, 95% CI: −1.68 to −0.27) were significantly lower in the plasma or serum of people with CF versus controls. Conclusions This systematic review and meta-analysis found good evidence for reduced antioxidant capacity and elevated oxidative stress in people with clinically-stable CF. Blood biomarkers of oxidative stress were elevated in stable CF vs non-CF controls. Lipid peroxidation was positively correlated with age and immune cell count in CF. Antioxidants vitamins A & E, β-carotene, lutein and albumin were lower in stable CF. Antioxidants were positively correlated with body mass index and lung function in CF.
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Affiliation(s)
- Adam J Causer
- School of Sport, Health and Exercise Science, Faculty of Science and Health, University of Portsmouth, Portsmouth, UK; Cystic Fibrosis Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Janis K Shute
- School of Pharmacy and Biomedical Sciences, Faculty of Science and Health, University of Portsmouth, Portsmouth, UK
| | - Michael H Cummings
- Department of Diabetes and Endocrinology, Queen Alexandra Hospital, Portsmouth, UK
| | - Anthony I Shepherd
- School of Sport, Health and Exercise Science, Faculty of Science and Health, University of Portsmouth, Portsmouth, UK
| | - Mathieu Gruet
- Laboratory of Impact of Physical Activity on Health (IAPS), UR n°201723207F, University of Toulon, France
| | - Joseph T Costello
- School of Sport, Health and Exercise Science, Faculty of Science and Health, University of Portsmouth, Portsmouth, UK
| | - Stephen Bailey
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Martin Lindley
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Clare Pearson
- Cystic Fibrosis Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Gary Connett
- National Institute for Health Research, Southampton Biomedical Research Centre, Southampton Children's Hospital, Southampton, UK
| | - Mark I Allenby
- Cystic Fibrosis Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Mary P Carroll
- Cystic Fibrosis Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Thomas Daniels
- Cystic Fibrosis Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Zoe L Saynor
- School of Sport, Health and Exercise Science, Faculty of Science and Health, University of Portsmouth, Portsmouth, UK; Cystic Fibrosis Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK.
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6
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The role of endothelial cells in cystic fibrosis. J Cyst Fibros 2019; 18:752-761. [DOI: 10.1016/j.jcf.2019.07.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/18/2019] [Accepted: 07/23/2019] [Indexed: 12/22/2022]
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Aridgides DS, Mellinger DL, Armstrong DA, Hazlett HF, Dessaint JA, Hampton TH, Atkins GT, Carroll JL, Ashare A. Functional and metabolic impairment in cigarette smoke-exposed macrophages is tied to oxidative stress. Sci Rep 2019; 9:9624. [PMID: 31270372 PMCID: PMC6610132 DOI: 10.1038/s41598-019-46045-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 06/17/2019] [Indexed: 02/06/2023] Open
Abstract
Cigarette smoke inhalation exposes the respiratory system to thousands of potentially toxic substances and causes chronic obstructive pulmonary disease (COPD). COPD is characterized by cycles of inflammation and infection with a dysregulated immune response contributing to disease progression. While smoking cessation can slow the damage in COPD, lung immunity remains impaired. Alveolar macrophages (AMΦ) are innate immune cells strategically poised at the interface between lungs, respiratory pathogens, and environmental toxins including cigarette smoke. We studied the effects of cigarette smoke on model THP-1 and peripheral blood monocyte derived macrophages, and discovered a marked inhibition of bacterial phagocytosis which was replicated in primary human AMΦ. Cigarette smoke decreased AMΦ cystic fibrosis transmembrane conductance regulator (CFTR) expression, previously shown to be integral to phagocytosis. In contrast to cystic fibrosis macrophages, smoke-exposed THP-1 and AMΦ failed to augment phagocytosis in the presence of CFTR modulators. Cigarette smoke also inhibited THP-1 and AMΦ mitochondrial respiration while inducing glycolysis and reactive oxygen species. These effects were mitigated by the free radical scavenger N-acetylcysteine, which also reverted phagocytosis to baseline levels. Collectively these results implicate metabolic dysfunction as a key factor in the toxicity of cigarette smoke to AMΦ, and illuminate avenues of potential intervention.
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Affiliation(s)
- Daniel S Aridgides
- Section of Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Diane L Mellinger
- Section of Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - David A Armstrong
- Section of Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Haley F Hazlett
- Department of Microbiology and Immunology, Geisel School of Medicine, Hanover, NH, USA
| | - John A Dessaint
- Section of Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Thomas H Hampton
- Department of Microbiology and Immunology, Geisel School of Medicine, Hanover, NH, USA
| | - Graham T Atkins
- Section of Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - James L Carroll
- Section of Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA
| | - Alix Ashare
- Section of Pulmonary and Critical Care Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH, USA. .,Department of Microbiology and Immunology, Geisel School of Medicine, Hanover, NH, USA.
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8
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Castellani S, Di Gioia S, di Toma L, Conese M. Human Cellular Models for the Investigation of Lung Inflammation and Mucus Production in Cystic Fibrosis. Anal Cell Pathol (Amst) 2018; 2018:3839803. [PMID: 30581723 PMCID: PMC6276497 DOI: 10.1155/2018/3839803] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 09/04/2018] [Accepted: 09/23/2018] [Indexed: 12/12/2022] Open
Abstract
Chronic inflammation, oxidative stress, mucus plugging, airway remodeling, and respiratory infections are the hallmarks of the cystic fibrosis (CF) lung disease. The airway epithelium is central in the innate immune responses to pathogens colonizing the airways, since it is involved in mucociliary clearance, senses the presence of pathogens, elicits an inflammatory response, orchestrates adaptive immunity, and activates mesenchymal cells. In this review, we focus on cellular models of the human CF airway epithelium that have been used for studying mucus production, inflammatory response, and airway remodeling, with particular reference to two- and three-dimensional cultures that better recapitulate the native airway epithelium. Cocultures of airway epithelial cells, macrophages, dendritic cells, and fibroblasts are instrumental in disease modeling, drug discovery, and identification of novel therapeutic targets. Nevertheless, they have to be implemented in the CF field yet. Finally, novel systems hijacking on tissue engineering, including three-dimensional cocultures, decellularized lungs, microfluidic devices, and lung organoids formed in bioreactors, will lead the generation of relevant human preclinical respiratory models a step forward.
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Affiliation(s)
- Stefano Castellani
- Laboratory of Regenerative and Experimental Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Sante Di Gioia
- Laboratory of Regenerative and Experimental Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Lorena di Toma
- Laboratory of Regenerative and Experimental Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Massimo Conese
- Laboratory of Regenerative and Experimental Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
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9
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Liou TG. The Clinical Biology of Cystic Fibrosis Transmembrane Regulator Protein: Its Role and Function in Extrapulmonary Disease. Chest 2018; 155:605-616. [PMID: 30359614 DOI: 10.1016/j.chest.2018.10.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 02/07/2023] Open
Abstract
Normal cystic fibrosis (CF) transmembrane regulator (CFTR) protein has multiple functions in health and disease. Many mutations in the CFTR gene produce abnormal or absent protein. CFTR protein dysfunction underlies the classic CF phenotype of progressive pulmonary and GI pathology but may underlie diseases not usually associated with CF. This review highlights selected extrapulmonary disease that may be associated with abnormal CFTR. Increasing survival in CF is associated with increasing incidence of diseases associated with aging. CFTR dysfunction in older individuals may have novel effects on glucose metabolism, control of insulin release, regulation of circadian rhythm, and cancer cell pathophysiology. In individuals who have cancers with acquired CFTR suppression, their tumors may more likely exhibit rapid expansion, epithelial-to-mesenchymal transformation, abnormally reduced apoptosis, and increased metastatic potential. The new modulators of CFTR protein synthesis could facilitate the additional exploration needed to better understand the unfolding clinical biology of CFTR in human disease, even as they revolutionize treatment of patients with CF.
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Affiliation(s)
- Theodore G Liou
- Center for Quantitative Biology, The Adult Cystic Fibrosis Center and the Division of Respiratory, Critical Care and Occupational Pulmonary Medicine, Department of Internal Medicine, School of Medicine, University of Utah, Salt Lake City, UT.
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Aberrant GSH reductase and NOX activities concur with defective CFTR to pro-oxidative imbalance in cystic fibrosis airways. J Bioenerg Biomembr 2018. [PMID: 29524019 DOI: 10.1007/s10863-018-9748-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cystic fibrosis (CF) is associated to impaired Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) channel also causing decreased glutathione (GSH) secretion, defective airway bacterial clearance and inflammation. Here we checked the main ROS-producing and ROS-scavenging enzymes as potential additional factors involved in CF pathogenesis. We found that CFBE41o-cells, expressing F508del CFTR, have increased NADPH oxidase (NOX) activity and expression level, mainly responsible of the increased ROS production, and decreased glutathione reductase (GR) activity, not dependent on GR protein level decrease. Furthermore, defective CFTR proved to cause both extracellular and intracellular GSH level decrease, probably by reducing the amount of extracellular GSH-derived cysteine required for cytosolic GSH synthesis. Importantly, we provide evidence that defective CFTR and NOX/GR activity imbalance both contribute to NADPH and GSH level decrease and ROS overproduction in CF cells.
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11
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The EGFR-ADAM17 Axis in Chronic Obstructive Pulmonary Disease and Cystic Fibrosis Lung Pathology. Mediators Inflamm 2018. [PMID: 29540993 PMCID: PMC5818912 DOI: 10.1155/2018/1067134] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) and cystic fibrosis (CF) share molecular mechanisms that cause the pathological symptoms they have in common. Here, we review evidence suggesting that hyperactivity of the EGFR/ADAM17 axis plays a role in the development of chronic lung disease in both CF and COPD. The ubiquitous transmembrane protease A disintegrin and metalloprotease 17 (ADAM17) forms a functional unit with the EGF receptor (EGFR), in a feedback loop interaction labeled the ADAM17/EGFR axis. In airway epithelial cells, ADAM17 sheds multiple soluble signaling proteins by proteolysis, including EGFR ligands such as amphiregulin (AREG), and proinflammatory mediators such as the interleukin 6 coreceptor (IL-6R). This activity can be enhanced by injury, toxins, and receptor-mediated external triggers. In addition to intracellular kinases, the extracellular glutathione-dependent redox potential controls ADAM17 shedding. Thus, the epithelial ADAM17/EGFR axis serves as a receptor of incoming luminal stress signals, relaying these to neighboring and underlying cells, which plays an important role in the resolution of lung injury and inflammation. We review evidence that congenital CFTR deficiency in CF and reduced CFTR activity in chronic COPD may cause enhanced ADAM17/EGFR signaling through a defect in glutathione secretion. In future studies, these complex interactions and the options for pharmaceutical interventions will be further investigated.
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12
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Stolarczyk M, Veit G, Schnúr A, Veltman M, Lukacs GL, Scholte BJ. Extracellular oxidation in cystic fibrosis airway epithelium causes enhanced EGFR/ADAM17 activity. Am J Physiol Lung Cell Mol Physiol 2017; 314:L555-L568. [PMID: 29351448 DOI: 10.1152/ajplung.00458.2017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The EGF receptor (EGFR)/a disintegrin and metalloproteinase 17 (ADAM17) signaling pathway mediates the shedding of growth factors and secretion of cytokines and is involved in chronic inflammation and tissue remodeling. Since these are hallmarks of cystic fibrosis (CF) lung disease, we hypothesized that CF transmembrane conductance regulator (CFTR) deficiency enhances EGFR/ADAM17 activity in human bronchial epithelial cells. In CF bronchial epithelial CFBE41o- cells lacking functional CFTR (iCFTR-) cultured at air-liquid interface (ALI) we found enhanced ADAM17-mediated shedding of the EGFR ligand amphiregulin (AREG) compared with genetically identical cells with induced CFTR expression (iCFTR+). Expression of the inactive G551D-CFTR did not have this effect, suggesting that active CFTR reduces EGFR/ADAM17 activity. This was confirmed in CF compared with normal differentiated primary human bronchial epithelial cells (HBEC-ALI). ADAM17-mediated AREG shedding was tightly regulated by the EGFR/MAPK pathway. Compared with iCFTR+ cells, iCFTR- cells displayed enhanced apical presentation and phosphorylation of EGFR, in accordance with enhanced EGFR/ADAM17 activity in CFTR-deficient cells. The nonpermeant natural antioxidant glutathione (GSH) strongly inhibited AREG release in iCFTR and in primary HBEC-ALI, suggesting that ADAM17 activity is directly controlled by extracellular redox potentials in differentiated airway epithelium. Furthermore, the fluorescent redox probe glutaredoxin 1-redox-sensitive green fluorescent protein-glycosylphosphatidylinositol (Grx1-roGFP-GPI) indicated more oxidized conditions in the extracellular space of iCFTR- cells, consistent with the role of CFTR in GSH transport. Our data suggest that in CFTR-deficient airway epithelial cells a more oxidized state of the extracellular membrane, likely caused by defective GSH secretion, leads to enhanced activity of the EGFR/ADAM17 signaling axis. In CF lungs this could contribute to tissue remodeling and hyperinflammation.
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Affiliation(s)
| | - Guido Veit
- Department of Physiology, McGill University , Montreal, Quebec , Canada
| | - Andrea Schnúr
- Department of Physiology, McGill University , Montreal, Quebec , Canada
| | - Mieke Veltman
- Cell Biology, Erasmus MC, Rotterdam , The Netherlands
| | - Gergely L Lukacs
- Department of Physiology, McGill University , Montreal, Quebec , Canada
| | - Bob J Scholte
- Cell Biology, Erasmus MC, Rotterdam , The Netherlands.,Pediatric Pulmonology, Erasmus MC, Rotterdam , The Netherlands
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13
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Bragonzi A, Horati H, Kerrigan L, Lorè NI, Scholte BJ, Weldon S. Inflammation and host-pathogen interaction: Cause and consequence in cystic fibrosis lung disease. J Cyst Fibros 2017; 17:S40-S45. [PMID: 29107600 DOI: 10.1016/j.jcf.2017.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 10/02/2017] [Accepted: 10/04/2017] [Indexed: 10/18/2022]
Abstract
Cystic Fibrosis (CF) lung disease is associated with dysregulation of host defence systems, which ultimately disrupts the balance between inflammation and resolution and leaves the host susceptible to repeated infection. However, the mechanisms underlying these defects are complex and continue to garner significant interest among the CF research community. This review explores emerging data on novel aspects of innate host defence with promising biomarker and therapeutic potential for CF lung disease. Improved understanding of inflammation and host defence against pathogens in patients and animal models during the progression of CF lung disease is pivotal for the discovery of new therapeutics that can limit and/or prevent damage from birth.
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Affiliation(s)
- Alessandra Bragonzi
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milano, Italy
| | - Hamed Horati
- Pediatric Pulmonology, Erasmus MC, Rotterdam, The Netherlands
| | - Lauren Kerrigan
- Airway Innate Immunity Research (AiiR) Group, Centre for Experimental Medicine, Queen's University Belfast, BT97BL, United Kingdom
| | - Nicola Ivan Lorè
- Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milano, Italy
| | - Bob J Scholte
- Pediatric Pulmonology, Erasmus MC, Rotterdam, The Netherlands; Cell Biology, Erasmus MC, Rotterdam, The Netherlands
| | - Sinéad Weldon
- Airway Innate Immunity Research (AiiR) Group, Centre for Experimental Medicine, Queen's University Belfast, BT97BL, United Kingdom.
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14
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Londino JD, Lazrak A, Collawn JF, Bebok Z, Harrod KS, Matalon S. Influenza virus infection alters ion channel function of airway and alveolar cells: mechanisms and physiological sequelae. Am J Physiol Lung Cell Mol Physiol 2017; 313:L845-L858. [PMID: 28775098 DOI: 10.1152/ajplung.00244.2017] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 07/25/2017] [Accepted: 07/27/2017] [Indexed: 02/07/2023] Open
Abstract
The cystic fibrosis transmembrane conductance regulator (CFTR) and the amiloride-sensitive epithelial sodium channels (ENaC) are located in the apical membranes of airway and alveolar epithelial cells. These transporters play an important role in the regulation of lung fluid balance across airway and alveolar epithelia by being the conduits for chloride (Cl-) and bicarbonate ([Formula: see text]) secretion and sodium (Na+) ion absorption, respectively. The functional role of these channels in the respiratory tract is to maintain the optimum volume and ionic composition of the bronchial periciliary fluid (PCL) and alveolar lining fluid (ALF) layers. The PCL is required for proper mucociliary clearance of pathogens and debris, and the ALF is necessary for surfactant homeostasis and optimum gas exchange. Dysregulation of ion transport may lead to mucus accumulation, bacterial infections, inflammation, pulmonary edema, and compromised respiratory function. Influenza (or flu) in mammals is caused by influenza A and B viruses. Symptoms include dry cough, sore throat, and is often followed by secondary bacterial infections, accumulation of fluid in the alveolar spaces and acute lung injury. The underlying mechanisms of flu symptoms are not fully understood. This review summarizes our present knowledge of how influenza virus infections alter airway and alveolar epithelial cell CFTR and ENaC function in vivo and in vitro and the role of these changes in influenza pathogenesis.
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Affiliation(s)
- James David Londino
- Acute Lung Injury Center of Excellence, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Ahmed Lazrak
- Department of Anesthesiology and Perioperative Medicine, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - James F Collawn
- Department of Cell, Developmental and Integrative Biology School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Zsuzsanna Bebok
- Department of Cell, Developmental and Integrative Biology School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Kevin S Harrod
- Department of Anesthesiology and Perioperative Medicine, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
| | - Sadis Matalon
- Department of Anesthesiology and Perioperative Medicine, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and
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15
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Cartwright MM, Schmuck SC, Corredor C, Wang B, Scoville DK, Chisholm CR, Wilkerson HW, Afsharinejad Z, Bammler TK, Posner JD, Shutthanandan V, Baer DR, Mitra S, Altemeier WA, Kavanagh TJ. The pulmonary inflammatory response to multiwalled carbon nanotubes is influenced by gender and glutathione synthesis. Redox Biol 2016; 9:264-275. [PMID: 27596734 PMCID: PMC5013253 DOI: 10.1016/j.redox.2016.08.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/15/2016] [Accepted: 08/18/2016] [Indexed: 12/14/2022] Open
Abstract
Inhalation of multiwalled carbon nanotubes (MWCNTs) during their manufacture or incorporation into various commercial products may cause lung inflammation, fibrosis, and oxidative stress in exposed workers. Some workers may be more susceptible to these effects because of differences in their ability to synthesize the major antioxidant and immune system modulator glutathione (GSH). Accordingly, in this study we examined the influence of GSH synthesis and gender on MWCNT-induced lung inflammation in C57BL/6 mice. GSH synthesis was impaired through genetic manipulation of Gclm, the modifier subunit of glutamate cysteine ligase, the rate-limiting enzyme in GSH synthesis. Twenty-four hours after aspirating 25µg of MWCNTs, all male mice developed neutrophilia in their lungs, regardless of Gclm genotype. However, female mice with moderate (Gclm heterozygous) and severe (Gclm null) GSH deficiencies developed significantly less neutrophilia. We found no indications of MWCNT-induced oxidative stress as reflected in the GSH content of lung tissue and epithelial lining fluid, 3-nitrotyrosine formation, or altered mRNA or protein expression of several redox-responsive enzymes. Our results indicate that GSH-deficient female mice are rendered uniquely susceptible to an attenuated neutrophil response. If the same effects occur in humans, GSH-deficient women manufacturing MWCNTs may be at greater risk for impaired neutrophil-dependent clearance of MWCNTs from the lung. In contrast, men may have effective neutrophil-dependent clearance, but may be at risk for lung neutrophilia regardless of their GSH levels.
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Affiliation(s)
- Megan M Cartwright
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, USA
| | - Stefanie C Schmuck
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, USA
| | - Charlie Corredor
- Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | - Bingbing Wang
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - David K Scoville
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, USA
| | - Claire R Chisholm
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, USA
| | - Hui-Wen Wilkerson
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, USA
| | - Zahra Afsharinejad
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, USA
| | - Theodor K Bammler
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, USA
| | - Jonathan D Posner
- Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA; Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA
| | | | - Donald R Baer
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, USA
| | - Somenath Mitra
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA
| | | | - Terrance J Kavanagh
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195, USA.
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16
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Schmidt BZ, Haaf JB, Leal T, Noel S. Cystic fibrosis transmembrane conductance regulator modulators in cystic fibrosis: current perspectives. Clin Pharmacol 2016; 8:127-140. [PMID: 27703398 PMCID: PMC5036583 DOI: 10.2147/cpaa.s100759] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Mutations of the CFTR gene cause cystic fibrosis (CF), the most common recessive monogenic disease worldwide. These mutations alter the synthesis, processing, function, or half-life of CFTR, the main chloride channel expressed in the apical membrane of epithelial cells in the airway, intestine, pancreas, and reproductive tract. Lung disease is the most critical manifestation of CF. It is characterized by airway obstruction, infection, and inflammation that lead to fatal tissue destruction. In spite of great advances in early and multidisciplinary medical care, and in our understanding of the pathophysiology, CF is still considerably reducing the life expectancy of patients. This review highlights the current development in pharmacological modulators of CFTR, which aim at rescuing the expression and/or function of mutated CFTR. While only Kalydeco® and Orkambi® are currently available to patients, many other families of CFTR modulators are undergoing preclinical and clinical investigations. Drug repositioning and personalized medicine are particularly detailed in this review as they represent the most promising strategies for restoring CFTR function in CF.
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Affiliation(s)
- Béla Z Schmidt
- Stem Cell Biology and Embryology, Department of Development and Regeneration, Katholieke Universiteit Leuven, Leuven
| | - Jérémy B Haaf
- Louvain Center for Toxicology and Applied Pharmacology, Université Catholique de Louvain, Brussels, Belgium
| | - Teresinha Leal
- Louvain Center for Toxicology and Applied Pharmacology, Université Catholique de Louvain, Brussels, Belgium
| | - Sabrina Noel
- Louvain Center for Toxicology and Applied Pharmacology, Université Catholique de Louvain, Brussels, Belgium
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17
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Lerebours A, To VV, Bourdineaud JP. Danio rerioABC transporter genesabcb3andabcb7play a protecting role against metal contamination. J Appl Toxicol 2016; 36:1551-1557. [DOI: 10.1002/jat.3313] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 01/25/2016] [Accepted: 01/25/2016] [Indexed: 12/29/2022]
Affiliation(s)
- Adélaïde Lerebours
- School of Biological Sciences, Institute of Marine Sciences; University of Portsmouth; Ferry Road Portsmouth PO4 9LY UK
| | - Van Vinh To
- University of Bordeaux, CNRS, UMR 5805; Arcachon marine station, Place du Dr Peyneau; 33120 Arcachon France
| | - Jean-Paul Bourdineaud
- University of Bordeaux, CNRS, UMR 5805; Arcachon marine station, Place du Dr Peyneau; 33120 Arcachon France
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18
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Hegyi P, Wilschanski M, Muallem S, Lukacs GL, Sahin-Tóth M, Uc A, Gray MA, Rakonczay Z, Maléth J. CFTR: A New Horizon in the Pathomechanism and Treatment of Pancreatitis. Rev Physiol Biochem Pharmacol 2016; 170:37-66. [PMID: 26856995 DOI: 10.1007/112_2015_5002] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cystic fibrosis transmembrane conductance regulator (CFTR) is an ion channel that conducts chloride and bicarbonate ions across epithelial cell membranes. Mutations in the CFTR gene diminish the ion channel function and lead to impaired epithelial fluid transport in multiple organs such as the lung and the pancreas resulting in cystic fibrosis. Heterozygous carriers of CFTR mutations do not develop cystic fibrosis but exhibit increased risk for pancreatitis and associated pancreatic damage characterized by elevated mucus levels, fibrosis, and cyst formation. Importantly, recent studies demonstrated that pancreatitis causing insults, such as alcohol, smoking, or bile acids, strongly inhibit CFTR function. Furthermore, human studies showed reduced levels of CFTR expression and function in all forms of pancreatitis. These findings indicate that impairment of CFTR is critical in the development of pancreatitis; therefore, correcting CFTR function could be the first specific therapy in pancreatitis. In this review, we summarize recent advances in the field and discuss new possibilities for the treatment of pancreatitis.
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Affiliation(s)
- Péter Hegyi
- Institute for Translational Medicine and 1st Department of Medicine, University of Pécs, Pécs, Hungary.
- MTA-SZTE Translational Gastroenterology Research Group, Szeged, Hungary.
- First Department of Medicine, University of Szeged, Szeged, Hungary.
| | - Michael Wilschanski
- Pediatric Gastroenterology Unit, Hadassah Medical Center, Hebrew University, Jerusalem, Israel
| | - Shmuel Muallem
- National Institute of Dental and Craniofacial Research, Bethesda, MD, USA
| | | | - Miklós Sahin-Tóth
- Department of Molecular and Cell Biology, Boston University Henry M. Goldman School of Dental Medicine, Boston, MA, USA
| | - Aliye Uc
- Department of Pediatrics, University of Iowa, Carver College of Medicine, Iowa City, IA, USA
| | - Michael A Gray
- Institute for Cell & Molecular Biosciences, University Medical School, Newcastle University, Newcastle upon Tyne, UK
| | - Zoltán Rakonczay
- First Department of Medicine, University of Szeged, Szeged, Hungary
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - József Maléth
- First Department of Medicine, University of Szeged, Szeged, Hungary
- MTA-SZTE Translational Gastroenterology Research Group, Szeged, Hungary
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19
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Chandler JD, Min E, Huang J, McElroy CS, Dickerhof N, Mocatta T, Fletcher AA, Evans CM, Liang L, Patel M, Kettle AJ, Nichols DP, Day BJ. Antiinflammatory and Antimicrobial Effects of Thiocyanate in a Cystic Fibrosis Mouse Model. Am J Respir Cell Mol Biol 2015; 53:193-205. [PMID: 25490247 DOI: 10.1165/rcmb.2014-0208oc] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Thiocyanate (SCN) is used by the innate immune system, but less is known about its impact on inflammation and oxidative stress. Granulocytes oxidize SCN to evolve the bactericidal hypothiocyanous acid, which we previously demonstrated is metabolized by mammalian, but not bacterial, thioredoxin reductase (TrxR). There is also evidence that SCN is dysregulated in cystic fibrosis (CF), a disease marked by chronic infection and airway inflammation. To investigate antiinflammatory effects of SCN, we administered nebulized SCN or saline to β epithelial sodium channel (βENaC) mice, a phenotypic CF model. SCN significantly decreased airway neutrophil infiltrate and restored the redox ratio of glutathione in lung tissue and airway epithelial lining fluid to levels comparable to wild type. Furthermore, in Pseudomonas aeruginosa-infected βENaC and wild-type mice, SCN decreased inflammation, proinflammatory cytokines, and bacterial load. SCN also decreased airway neutrophil chemokine keratinocyte chemoattractant (also known as C-X-C motif chemokine ligand 1) and glutathione sulfonamide, a biomarker of granulocyte oxidative activity, in uninfected βENaC mice. Lung tissue TrxR activity and expression increased in inflamed lung tissue, providing in vivo evidence for the link between hypothiocyanous acid metabolism by TrxR and the promotion of selective biocide of pathogens. SCN treatment both suppressed inflammation and improved host defense, suggesting that nebulized SCN may have important therapeutic utility in diseases of both chronic airway inflammation and persistent bacterial infection, such as CF.
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Affiliation(s)
- Joshua D Chandler
- 1 Department of Pharmaceutical Sciences and.,Departments of 2 Medicine and
| | | | | | - Cameron S McElroy
- 1 Department of Pharmaceutical Sciences and.,Departments of 2 Medicine and
| | - Nina Dickerhof
- 3 Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch, New Zealand
| | - Tessa Mocatta
- 3 Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch, New Zealand
| | - Ashley A Fletcher
- 4 Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Denver, Aurora, Colorado
| | - Christopher M Evans
- 4 Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Denver, Aurora, Colorado
| | | | | | - Anthony J Kettle
- 3 Centre for Free Radical Research, Department of Pathology, University of Otago Christchurch, Christchurch, New Zealand
| | - David P Nichols
- Departments of 2 Medicine and.,5 Pediatrics, National Jewish Health, Denver, Colorado; and
| | - Brian J Day
- 1 Department of Pharmaceutical Sciences and.,Departments of 2 Medicine and
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20
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Londino JD, Lazrak A, Noah JW, Aggarwal S, Bali V, Woodworth BA, Bebok Z, Matalon S. Influenza virus M2 targets cystic fibrosis transmembrane conductance regulator for lysosomal degradation during viral infection. FASEB J 2015; 29:2712-25. [PMID: 25795456 PMCID: PMC4478808 DOI: 10.1096/fj.14-268755] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 02/26/2015] [Indexed: 12/24/2022]
Abstract
We sought to determine the mechanisms by which influenza infection of human epithelial cells decreases cystic fibrosis transmembrane conductance regulator (CFTR) expression and function. We infected human bronchial epithelial (NHBE) cells and murine nasal epithelial (MNE) cells with various strains of influenza A virus. Influenza infection significantly reduced CFTR short circuit currents (Isc) and protein levels at 8 hours postinfection. We then infected CFTR expressing human embryonic kidney (HEK)-293 cells (HEK-293 CFTRwt) with influenza virus encoding a green fluorescent protein (GFP) tag and performed whole-cell and cell-attached patch clamp recordings. Forskolin-stimulated, GlyH-101-sensitive CFTR conductances, and CFTR open probabilities were reduced by 80% in GFP-positive cells; Western blots also showed significant reduction in total and plasma membrane CFTR levels. Knockdown of the influenza matrix protein 2 (M2) with siRNA, or inhibition of its activity by amantadine, prevented the decrease in CFTR expression and function. Lysosome inhibition (bafilomycin-A1), but not proteasome inhibition (lactacystin), prevented the reduction in CFTR levels. Western blots of immunoprecipitated CFTR from influenza-infected cells, treated with BafA1, and probed with antibodies against lysine 63-linked (K-63) or lysine 48-linked (K-48) polyubiquitin chains supported lysosomal targeting. These results highlight CFTR damage, leading to early degradation as an important contributing factor to influenza infection-associated ion transport defects.
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Affiliation(s)
- James David Londino
- *Department of Anesthesiology, Pulmonary Injury and Repair Center, and Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA; Southern Research Institute, Birmingham, Alabama, USA; and Department of Surgery, Division of Otolaryngology, School of Medicine, University of Alabama, Birmingham, Alabama, USA
| | - Ahmed Lazrak
- *Department of Anesthesiology, Pulmonary Injury and Repair Center, and Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA; Southern Research Institute, Birmingham, Alabama, USA; and Department of Surgery, Division of Otolaryngology, School of Medicine, University of Alabama, Birmingham, Alabama, USA
| | - James W Noah
- *Department of Anesthesiology, Pulmonary Injury and Repair Center, and Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA; Southern Research Institute, Birmingham, Alabama, USA; and Department of Surgery, Division of Otolaryngology, School of Medicine, University of Alabama, Birmingham, Alabama, USA
| | - Saurabh Aggarwal
- *Department of Anesthesiology, Pulmonary Injury and Repair Center, and Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA; Southern Research Institute, Birmingham, Alabama, USA; and Department of Surgery, Division of Otolaryngology, School of Medicine, University of Alabama, Birmingham, Alabama, USA
| | - Vedrana Bali
- *Department of Anesthesiology, Pulmonary Injury and Repair Center, and Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA; Southern Research Institute, Birmingham, Alabama, USA; and Department of Surgery, Division of Otolaryngology, School of Medicine, University of Alabama, Birmingham, Alabama, USA
| | - Bradford A Woodworth
- *Department of Anesthesiology, Pulmonary Injury and Repair Center, and Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA; Southern Research Institute, Birmingham, Alabama, USA; and Department of Surgery, Division of Otolaryngology, School of Medicine, University of Alabama, Birmingham, Alabama, USA
| | - Zsuzsanna Bebok
- *Department of Anesthesiology, Pulmonary Injury and Repair Center, and Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA; Southern Research Institute, Birmingham, Alabama, USA; and Department of Surgery, Division of Otolaryngology, School of Medicine, University of Alabama, Birmingham, Alabama, USA
| | - Sadis Matalon
- *Department of Anesthesiology, Pulmonary Injury and Repair Center, and Department of Cell, Developmental and Integrative Biology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA; Southern Research Institute, Birmingham, Alabama, USA; and Department of Surgery, Division of Otolaryngology, School of Medicine, University of Alabama, Birmingham, Alabama, USA
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21
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Pollock N, Cant N, Rimington T, Ford RC. Purification of the cystic fibrosis transmembrane conductance regulator protein expressed in Saccharomyces cerevisiae. J Vis Exp 2014. [PMID: 24893839 PMCID: PMC4181556 DOI: 10.3791/51447] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Defects in the cystic fibrosis transmembrane conductance regulator (CFTR) protein cause cystic fibrosis (CF), an autosomal recessive disease that currently limits the average life expectancy of sufferers to <40 years of age. The development of novel drug molecules to restore the activity of CFTR is an important goal in the treatment CF, and the isolation of functionally active CFTR is a useful step towards achieving this goal. We describe two methods for the purification of CFTR from a eukaryotic heterologous expression system, S. cerevisiae. Like prokaryotic systems, S. cerevisiae can be rapidly grown in the lab at low cost, but can also traffic and posttranslationally modify large membrane proteins. The selection of detergents for solubilization and purification is a critical step in the purification of any membrane protein. Having screened for the solubility of CFTR in several detergents, we have chosen two contrasting detergents for use in the purification that allow the final CFTR preparation to be tailored to the subsequently planned experiments. In this method, we provide comparison of the purification of CFTR in dodecyl-β-D-maltoside (DDM) and 1-tetradecanoyl-sn-glycero-3-phospho-(1'-rac-glycerol) (LPG-14). Protein purified in DDM by this method shows ATPase activity in functional assays. Protein purified in LPG-14 shows high purity and yield, can be employed to study post-translational modifications, and can be used for structural methods such as small-angle X-ray scattering and electron microscopy. However it displays significantly lower ATPase activity.
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Affiliation(s)
| | - Natasha Cant
- Faculty of Life Sciences, University of Manchester
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22
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Marson FADL, Bertuzzo CS, Ribeiro AF, Ribeiro JD. Polymorphisms in the glutathione pathway modulate cystic fibrosis severity: a cross-sectional study. BMC MEDICAL GENETICS 2014; 15:27. [PMID: 24593045 PMCID: PMC3973994 DOI: 10.1186/1471-2350-15-27] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 02/17/2014] [Indexed: 11/10/2022]
Abstract
BACKGROUND Cystic fibrosis (CF) clinically manifests with various levels of severity, which are thought to be modulated by mutations in the cystic fibrosis transmembrane conductance regulator gene (CFTR), modifier genes, and the environment. This study verified whether polymorphisms in modifier genes associated with glutathione (GSH) metabolism influence CF severity. METHODS A cross-sectional study of 180 CF patients was carried out from 2011 to 2012. We analyzed CFTR mutations, polymorphisms (GSTM1 and GSTT1 deletions, GSTP1 + 313A > G, GCLC-129C > T, and GCLC-3506A > G) in modifier genes and CF clinical severity as assessed by 28 clinical and laboratory variables. RESULTS Significant associations were found between modifier gene polymorphisms and particular phenotypes or genotype changes. These included GCLC-129C > T with a higher frequency of the Pseudomonas aeruginosa mucoid to CC genotype (p = 0.044), and GCLC-3506A > G with a higher frequency of the no-mucoid P. aeruginosa (NMPA) to AA genotype (p = 0.012). The GSTT1 deletion was associated with a higher frequency of the NMPA to homozygous deletion (p = 0.008), GSTP1 + 313A > G with a minor risk of osteoporosis (p = 0.036), and patient age ≤ 154 months (p = 0.044) with the AA genotype. The Bhalla score was associated with GCLC-3506A > G (p = 0.044) and GSTM1/GSTT1 deletion polymorphisms (p = 0.02), while transcutaneous hemoglobin oxygen saturation levels were associated with GSTT1 deletions (p = 0.048). CONCLUSION CF severity is associated with polymorphisms in GSH pathways and CFTR mutations.
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Affiliation(s)
- Fernando Augusto de Lima Marson
- Center for Investigation in Pediatrics, Faculty of Medical Sciences, University of Campinas. Tessália Vieira de Camargo, 126. Cidade Universitária “Zeferino Vaz”, CEP: 13083-887 Campinas, São Paulo, Brazil
- Department of Medical Genetics, Faculty of Medical Sciences, University of Campinas. Tessália Vieira de Camargo, 126. Cidade Universitária “Zeferino Vaz”, CEP: 13083-887 Campinas, São Paulo, Brazil
| | - Carmen Silvia Bertuzzo
- Department of Medical Genetics, Faculty of Medical Sciences, University of Campinas. Tessália Vieira de Camargo, 126. Cidade Universitária “Zeferino Vaz”, CEP: 13083-887 Campinas, São Paulo, Brazil
| | - Antonio Fernando Ribeiro
- Center for Investigation in Pediatrics, Faculty of Medical Sciences, University of Campinas. Tessália Vieira de Camargo, 126. Cidade Universitária “Zeferino Vaz”, CEP: 13083-887 Campinas, São Paulo, Brazil
| | - Jose Dirceu Ribeiro
- Center for Investigation in Pediatrics, Faculty of Medical Sciences, University of Campinas. Tessália Vieira de Camargo, 126. Cidade Universitária “Zeferino Vaz”, CEP: 13083-887 Campinas, São Paulo, Brazil
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23
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Glutathione export from human erythrocytes and Plasmodium falciparum malaria parasites. Biochem J 2013; 448:389-400. [PMID: 22950671 DOI: 10.1042/bj20121050] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Glutathione export from uninfected human erythrocytes was compared with that from cells infected with the malaria parasite Plasmodium falciparum using two separate methods that distinguish between oxidized (GSSG) and reduced (GSH) glutathione. One involved enzymatic recycling with or without thiol-masking; the other involved rapid derivatization followed by HPLC. Glutathione efflux from uninfected erythrocytes under physiological conditions occurred predominantly as GSH. On exposure of the cells to oxidative challenge, efflux of GSSG exceeded that of GSH. Efflux of both species was blocked by MK571, an inhibitor of mammalian multidrug-resistance proteins. Glutathione efflux from parasitized erythrocytes was substantially greater than that from uninfected erythrocytes. Under physiological conditions, the exported species was GSH, whereas under energy-depleted conditions, GSSG efflux occurred. Glutathione export from parasitized cells was inhibited partially by MK571 and more so by furosemide, an inhibitor of the 'new permeability pathways' induced by the parasite in the host erythrocyte membrane. Efflux from isolated parasites occurred as GSH. On exposure to oxidative challenge, this GSH efflux decreased, but no GSSG export was detected. These results are consistent with the view that the parasite supplies its host erythrocyte with GSH, much of which is exported from the infected cell via parasite-induced pathways.
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24
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Abstract
SIGNIFICANCE Glutathione (GSH) depletion is a central signaling event that regulates the activation of cell death pathways. GSH depletion is often taken as a marker of oxidative stress and thus, as a consequence of its antioxidant properties scavenging reactive species of both oxygen and nitrogen (ROS/RNS). RECENT ADVANCES There is increasing evidence demonstrating that GSH loss is an active phenomenon regulating the redox signaling events modulating cell death activation and progression. CRITICAL ISSUES In this work, we review the role of GSH depletion by its efflux, as an important event regulating alterations in the cellular redox balance during cell death independent from oxidative stress and ROS/RNS formation. We discuss the mechanisms involved in GSH efflux during cell death progression and the redox signaling events by which GSH depletion regulates the activation of the cell death machinery. FUTURE DIRECTIONS The evidence summarized here clearly places GSH transport as a central mechanism mediating redox signaling during cell death progression. Future studies should be directed toward identifying the molecular identity of GSH transporters mediating GSH extrusion during cell death, and addressing the lack of sensitive approaches to quantify GSH efflux.
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Affiliation(s)
- Rodrigo Franco
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
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25
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Molecular identification and cellular localisation of GSH synthesis, uptake, efflux and degradation pathways in the rat ciliary body. Histochem Cell Biol 2012; 139:559-71. [DOI: 10.1007/s00418-012-1049-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2012] [Indexed: 01/02/2023]
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26
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Duranton C, Rubera I, Cougnon M, Melis N, Chargui A, Mograbi B, Tauc M. CFTR is involved in the fine tuning of intracellular redox status: physiological implications in cystic fibrosis. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 181:1367-77. [PMID: 22846720 DOI: 10.1016/j.ajpath.2012.06.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 05/15/2012] [Accepted: 06/11/2012] [Indexed: 01/11/2023]
Abstract
Adaptation to hypoxia is an essential physiological response to decrease in tissue oxygenation. This process is primarily under the control of transcriptional activator hypoxia-inducible factor (HIF1). A better understanding of the intracellular HIF1 stabilization pathway would help in management of various diseases characterized by anemia. Among human pathologies, cystic fibrosis disease is characterized by a chronic anemia that is inadequately compensated by the classical erythroid response mediated by the HIF pathway. Because the kidney expresses CFTR and is a master organ involved in the adaptation to hypoxia, we used renal cells to explore the relationship between CFTR and the HIF1-mediated pathway. To monitor the adaptive response to hypoxia, we engineered a hypoxia-induced fluorescent reporter system to determine whether CFTR modulates hypoxia-induced HIF1 stabilization. We show that CFTR is a regulator of HIF stabilization by controlling the intracellular reactive oxygen species (ROS) level through its ability to transport glutathione (a ROS scavenger) out of the cell. Moreover, we demonstrated in a mouse model that both the pharmacological inhibition and the ΔF508 mutation of CFTR lead to an impairment of the adaptive erythroid response to oxygen deprivation. We conclude that CFTR controls HIF stabilization through control of the level of intracellular ROS that act as signaling agents in the HIF-1 pathway.
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Affiliation(s)
- Christophe Duranton
- Faculties of Sciences LP2M CNRS-3472, University of Nice-Sophia Antipolis, Nice, France
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