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He Q, Li P, Han L, Yang C, Jiang M, Wang Y, Han X, Cao Y, Liu X, Wu W. Revisiting airway epithelial dysfunction and mechanisms in chronic obstructive pulmonary disease: the role of mitochondrial damage. Am J Physiol Lung Cell Mol Physiol 2024; 326:L754-L769. [PMID: 38625125 DOI: 10.1152/ajplung.00362.2023] [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: 11/22/2023] [Revised: 03/20/2024] [Accepted: 04/10/2024] [Indexed: 04/17/2024] Open
Abstract
Chronic exposure to environmental hazards causes airway epithelial dysfunction, primarily impaired physical barriers, immune dysfunction, and repair or regeneration. Impairment of airway epithelial function subsequently leads to exaggerated airway inflammation and remodeling, the main features of chronic obstructive pulmonary disease (COPD). Mitochondrial damage has been identified as one of the mechanisms of airway abnormalities in COPD, which is closely related to airway inflammation and airflow limitation. In this review, we evaluate updated evidence for airway epithelial mitochondrial damage in COPD and focus on the role of mitochondrial damage in airway epithelial dysfunction. In addition, the possible mechanism of airway epithelial dysfunction mediated by mitochondrial damage is discussed in detail, and recent strategies related to airway epithelial-targeted mitochondrial therapy are summarized. Results have shown that dysregulation of mitochondrial quality and oxidative stress may lead to airway epithelial dysfunction in COPD. This may result from mitochondrial damage as a central organelle mediating abnormalities in cellular metabolism. Mitochondrial damage mediates procellular senescence effects due to mitochondrial reactive oxygen species, which effectively exacerbate different types of programmed cell death, participate in lipid metabolism abnormalities, and ultimately promote airway epithelial dysfunction and trigger COPD airway abnormalities. These can be prevented by targeting mitochondrial damage factors and mitochondrial transfer. Thus, because mitochondrial damage is involved in COPD progression as a central factor of homeostatic imbalance in airway epithelial cells, it may be a novel target for therapeutic intervention to restore airway epithelial integrity and function in COPD.
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Affiliation(s)
- Qinglan He
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Peijun Li
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lihua Han
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Chen Yang
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Meiling Jiang
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Yingqi Wang
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaoyu Han
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Yuanyuan Cao
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
| | - Xiaodan Liu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Weibing Wu
- School of Exercise and Health, Shanghai University of Sport, Shanghai, China
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Li Y, Du Z, Li T, Ren X, Yu Y, Duan J, Sun Z. MitoQ ameliorates PM 2.5-induced pulmonary fibrosis through regulating the mitochondria DNA homeostasis. CHEMOSPHERE 2023; 330:138745. [PMID: 37088202 DOI: 10.1016/j.chemosphere.2023.138745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 04/11/2023] [Accepted: 04/19/2023] [Indexed: 05/03/2023]
Abstract
Pulmonary fibrosis is a severe pulmonary disease, and may related to PM2.5 exposure. Our study aims to explore the pathogenesis of PM2.5-induced pulmonary fibrosis, and MitoQ protective effect in this process. Our results find that inflammatory cells aggregation and pulmonary fibrosis in mice lung after PM2.5 exposure. Moreover, Collagen I/III overproduction, EMT and TGF-β1/Smad2 pathway activation in mice lung and BEAS-2B after PM2.5 exposure. Fortunately, these changes were partially ameliorated after MitoQ treatment. Meanwhile, severe oxidative stress, mitochondrial homeostasis imbalance, overproduction of 8-oxoG (7,8-dihydro-8-oxoguanine), as well as the inhibition of SIRT3/OGG1 pathway have founded in mice lung or BEAS-2B after PM2.5 exposure, which were alleviated by MitoQ treatment. Collectively, our study found that oxidative stress, especially mitochondrial oxidative stress participates in the PM2.5-induced pulmonary fibrosis, and MitoQ intervention had a protective effect on this progress. Moreover, mitochondrial DNA homeostasis might participate in the pulmonary fibrosis caused by PM2.5 exposure. Our study provides a novel pathogenesis of PM2.5-caused pulmonary fibrosis and a possible targeted therapy for the pulmonary diseases triggered by PM2.5.
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Affiliation(s)
- Yang Li
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Zhou Du
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Tianyu Li
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Xiaoke Ren
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Yang Yu
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Junchao Duan
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China.
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China.
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Karaman Y, Kaya-Yasar Y, Eylem CC, Onder SC, Nemutlu E, Bozkurt TE, Sahin-Erdemli I. The effect of mitochondria-targeted slow hydrogen sulfide releasing donor AP39-treatment on airway inflammation. Eur J Pharmacol 2023; 946:175619. [PMID: 36828102 DOI: 10.1016/j.ejphar.2023.175619] [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: 09/26/2022] [Revised: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 02/24/2023]
Abstract
Mitochondrial dysfunction has been shown to contribute to the pathophysiology of airway diseases. Therefore, mitochondria are targeted in the development of new therapeutic approaches. Hydrogen sulfide (H2S) has been shown to be involved in the pathophysiological processes of airway inflammation. We aimed to evaluate the effect of mitochondria-targeted slow H2S releasing donor AP39 [(10-oxo-10-(4-(3-thioxo-3H-1,2-dithiol5yl)phenoxy)decyl)triphenylphosphoniumbromide)] on lipopolysaccharide (LPS)-induced airway inflammation in mice. LPS was applied to female Balb/c mice by intranasal (i.n.) route to induce airway inflammation and the subgroups of mice were treated with i.n. AP39 (250-1000 nmol/kg). 48 h after LPS administration airway reactivity was evaluated in vivo, then bronchoalveolar lavage (BAL) fluid and lungs were collected. LPS application led to bronchial hyperreactivity and neutrophil infiltration into the lung tissues along with increased TNF-α, IL-1β and IL-6 levels in BAL fluid. LPS also induced an increase in the rate of glycolysis, glycogenolysis and Krebs-cycle. AP39 treatment prevented the LPS-induced bronchial hyperreactivity and reversed the increase in TNF-α and IL-6 levels in BAL fluid. The increase in neutrophil numbers in BAL fluid was also prevented by AP39 treatment at the highest dose. Our results indicate that AP39 can prevent bronchial hyperreactivity and decrease airway inflammation. Targeting H2S to the mitochondria may be a new therapeutic approach in airway inflammation.
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Affiliation(s)
- Yasemin Karaman
- Hacettepe University, Faculty of Pharmacy, Department of Pharmacology, Ankara, Turkey.
| | - Yesim Kaya-Yasar
- Karadeniz Technical University, Faculty of Pharmacy, Department of Pharmacology, Trabzon, Turkey
| | - Cemil Can Eylem
- Hacettepe University, Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey
| | - Sevgen Celik Onder
- Hacettepe University, Faculty of Medicine, Department of Pathology, Ankara, Turkey
| | - Emirhan Nemutlu
- Hacettepe University, Faculty of Pharmacy, Department of Analytical Chemistry, Ankara, Turkey; Hacettepe University, Faculty of Pharmacy, Bioanalytic and Omics Laboratory, Ankara, Turkey
| | - Turgut Emrah Bozkurt
- Hacettepe University, Faculty of Pharmacy, Department of Pharmacology, Ankara, Turkey
| | - Inci Sahin-Erdemli
- Hacettepe University, Faculty of Pharmacy, Department of Pharmacology, Ankara, Turkey
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4
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Tu W, Xiao X, Lu J, Liu X, Wang E, Yuan R, Wan R, Shen Y, Xu D, Yang P, Gong M, Gao P, Huang SK. Vanadium exposure exacerbates allergic airway inflammation and remodeling through triggering reactive oxidative stress. Front Immunol 2023; 13:1099509. [PMID: 36776398 PMCID: PMC9912158 DOI: 10.3389/fimmu.2022.1099509] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/22/2022] [Indexed: 01/28/2023] Open
Abstract
Background Metal components of environmental PM2.5 are associated with the exacerbation of allergic diseases like asthma. In our recent hospital-based population study, exposure to vanadium is shown to pose a significant risk for current asthma, but the causal relationship and its underlying molecular mechanisms remain unclear. Objective We sought to determine whether vanadium co-exposure can aggravate house dust mite (HDM)-induced allergic airway inflammation and remodeling, as well as investigate its related mechanisms. Methods Asthma mouse model was generated by using either vanadium pentoxide (V2O5) or HDM alone or in combination, in which the airway inflammation and remodeling was investigated. The effect of V2O5 co-exposure on HDM-induced epithelial-derived cytokine release and oxidative stress (ROS) generation was also examined by in vitro analyses. The role of ROS in V2O5 co-exposure-induced cytokine release and airway inflammation and remodeling was examined by using inhibitors or antioxidant. Results Compared to HDM alone, V2O5 co-exposure exacerbated HDM-induced airway inflammation with increased infiltration of inflammatory cells and elevated levels of Th1/Th2/Th17 and epithelial-derived (IL-25, TSLP) cytokines in the bronchoalveolar lavage fluids (BALFs). Intriguingly, V2O5 co-exposure also potentiated HDM-induced airway remodeling. Increased cytokine release was further supported by in vitro analysis in human bronchial epithelial cells (HBECs). Mechanistically, ROS, particularly mitochondrial-derived ROS, was significantly enhanced in HBECs after V2O5 co-exposure as compared to HDM challenge alone. Inhibition of ROS with its inhibitor N-acetyl-L-cysteine (NAC) and mitochondrial-targeted antioxidant MitoTEMPO blocked the increased epithelial release caused by V2O5 co-exposure. Furthermore, vitamin D3 as an antioxidant was found to inhibit V2O5 co-exposure-induced increased airway epithelial cytokine release and airway remodeling. Conclusions Our findings suggest that vanadium co-exposure exacerbates epithelial ROS generation that contribute to increased allergic airway inflammation and remodeling.
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Affiliation(s)
- Wei Tu
- Department of Respiratory & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen, China,The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China,Johns Hopkins Asthma and Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Xiaojun Xiao
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Jiahua Lu
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Xiaoyu Liu
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Eryi Wang
- Department of Respiratory & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen, China,The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Ruyi Yuan
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Rongjun Wan
- Johns Hopkins Asthma and Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States,Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Yingchun Shen
- Johns Hopkins Asthma and Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Damo Xu
- Department of Respiratory & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen, China,The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Pingchang Yang
- Department of Respiratory & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen, China,The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Miao Gong
- Department of Respiratory & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen, China,The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen Key Laboratory of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, China
| | - Peisong Gao
- Johns Hopkins Asthma and Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States,*Correspondence: Shau-Ku Huang, ; Peisong Gao,
| | - Shau-Ku Huang
- Department of Respiratory & Allergy, Third Affiliated Hospital of Shenzhen University, Shenzhen, China,National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, Taiwan,*Correspondence: Shau-Ku Huang, ; Peisong Gao,
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5
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Tu W, Xiao X, Lu J, Liu X, Wang E, Yuan R, Wan R, Shen Y, Xu D, Yang P, Gong M, Gao P, Huang SK. Vanadium exposure exacerbates allergic airway inflammation and remodeling through triggering reactive oxidative stress. Front Immunol 2023. [DOI: 10.3389/fimmu.2023.1099509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
BackgroundMetal components of environmental PM2.5 are associated with the exacerbation of allergic diseases like asthma. In our recent hospital-based population study, exposure to vanadium is shown to pose a significant risk for current asthma, but the causal relationship and its underlying molecular mechanisms remain unclear.ObjectiveWe sought to determine whether vanadium co-exposure can aggravate house dust mite (HDM)-induced allergic airway inflammation and remodeling, as well as investigate its related mechanisms.MethodsAsthma mouse model was generated by using either vanadium pentoxide (V2O5) or HDM alone or in combination, in which the airway inflammation and remodeling was investigated. The effect of V2O5 co-exposure on HDM-induced epithelial-derived cytokine release and oxidative stress (ROS) generation was also examined by in vitro analyses. The role of ROS in V2O5 co-exposure-induced cytokine release and airway inflammation and remodeling was examined by using inhibitors or antioxidant.ResultsCompared to HDM alone, V2O5 co-exposure exacerbated HDM-induced airway inflammation with increased infiltration of inflammatory cells and elevated levels of Th1/Th2/Th17 and epithelial-derived (IL-25, TSLP) cytokines in the bronchoalveolar lavage fluids (BALFs). Intriguingly, V2O5 co-exposure also potentiated HDM-induced airway remodeling. Increased cytokine release was further supported by in vitro analysis in human bronchial epithelial cells (HBECs). Mechanistically, ROS, particularly mitochondrial-derived ROS, was significantly enhanced in HBECs after V2O5 co-exposure as compared to HDM challenge alone. Inhibition of ROS with its inhibitor N-acetyl-L-cysteine (NAC) and mitochondrial-targeted antioxidant MitoTEMPO blocked the increased epithelial release caused by V2O5 co-exposure. Furthermore, vitamin D3 as an antioxidant was found to inhibit V2O5 co-exposure-induced increased airway epithelial cytokine release and airway remodeling.ConclusionsOur findings suggest that vanadium co-exposure exacerbates epithelial ROS generation that contribute to increased allergic airway inflammation and remodeling.
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Wang Z, Song Y, Jiang J, Piao Y, Li L, Bai Q, Xu C, Liu H, Li L, Piao H, Yan G. MicroRNA-182-5p Attenuates Asthmatic Airway Inflammation by Targeting NOX4. Front Immunol 2022; 13:853848. [PMID: 35711428 PMCID: PMC9192947 DOI: 10.3389/fimmu.2022.853848] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Bronchial asthma is characterized by chronic airway inflammation, airway hyperresponsiveness, and airway remodeling. MicroRNA (miRNA) has recently been implicated in the pathogenesis of asthma. However, the mechanisms of different miRNAs in asthma are complicated, and the mechanism of miRNA-182-5p in asthma is still unclear. Here, we aim to explore the mechanism of miRNA182-5p in asthma-related airway inflammation. Ovalbumin (OVA)-induced asthma model was established. MiRNA Microarray Analysis was performed to analyze the differentially expressed miRNAs in the asthma model. We found that the expression of miRNA-182-5p was significantly decreased in OVA-induced asthma. In vitro, IL-13 stimulation of BEAS-2B cells resulted in a significant up-regulation of NOX4 (nicotinamide adenine dinucleotide phosphate oxidase 4), accompanied by mitochondrial damage-induced apoptosis, NLRP3 (NOD-like receptor family pyrin domain-containing 3)/IL-1β activation, and reduced miRNA-182-5p. In contrast, overexpression of miRNA-182-5p significantly inhibited epithelial cell apoptosis and NLRP3/IL-1β activation. In addition, we found that miRNA-182-5p could bind to the 3’ untranscripted region of NOX4 mRNA and inhibit epithelial cell inflammation by reducing oxidative stress and mitochondrial damage. In vivo, miRNA-182-5p agomir treatment significantly reduced the percentage of eosinophils in bronchoalveolar lavage fluid, and down-regulated Th2 inflammatory factors, including IL-4, IL-5, and OVA induced IL-13. Meanwhile, miRNA-182-5p agomir reduced the peribronchial inflammatory cell infiltration, goblet cell proliferation and collagen deposition. In summary, targeting miRNA-182-5p may provide a new strategy for the treatment of asthma.
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Affiliation(s)
- Zhiguang Wang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, China
| | - Yilan Song
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Jingzhi Jiang
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Yihua Piao
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Intensive Care Unit, Affiliated Hospital of Yanbian University, Yanji, China
| | - Li Li
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Qiaoyun Bai
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Chang Xu
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Hanye Liu
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Liangchang Li
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
| | - Hongmei Piao
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Respiratory Medicine, Affiliated Hospital of Yanbian University, Yanji, China
- *Correspondence: Hongmei Piao, ; Guanghai Yan, ;
| | - Guanghai Yan
- Jilin Key Laboratory for Immune and Targeting Research on Common Allergic Diseases, Yanbian University, Yanji, China
- Department of Anatomy, Histology and Embryology, Yanbian University Medical College, Yanji, China
- *Correspondence: Hongmei Piao, ; Guanghai Yan, ;
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Badran M, Gozal D. PAI-1: A Major Player in the Vascular Dysfunction in Obstructive Sleep Apnea? Int J Mol Sci 2022; 23:5516. [PMID: 35628326 PMCID: PMC9141273 DOI: 10.3390/ijms23105516] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/05/2022] [Accepted: 05/12/2022] [Indexed: 02/04/2023] Open
Abstract
Obstructive sleep apnea is a chronic and prevalent condition that is associated with endothelial dysfunction, atherosclerosis, and imposes excess overall cardiovascular risk and mortality. Despite its high prevalence and the susceptibility of CVD patients to OSA-mediated stressors, OSA is still under-recognized and untreated in cardiovascular practice. Moreover, conventional OSA treatments have yielded either controversial or disappointing results in terms of protection against CVD, prompting the need for the identification of additional mechanisms and associated adjuvant therapies. Plasminogen activator inhibitor-1 (PAI-1), the primary inhibitor of tissue-type plasminogen activator (tPA) and urinary-type plasminogen activator (uPA), is a key regulator of fibrinolysis and cell migration. Indeed, elevated PAI-1 expression is associated with major cardiovascular adverse events that have been attributed to its antifibrinolytic activity. However, extensive evidence indicates that PAI-1 can induce endothelial dysfunction and atherosclerosis through complex interactions within the vasculature in an antifibrinolytic-independent matter. Elevated PAI-1 levels have been reported in OSA patients. However, the impact of PAI-1 on OSA-induced CVD has not been addressed to date. Here, we provide a comprehensive review on the mechanisms by which OSA and its most detrimental perturbation, intermittent hypoxia (IH), can enhance the transcription of PAI-1. We also propose causal pathways by which PAI-1 can promote atherosclerosis in OSA, thereby identifying PAI-1 as a potential therapeutic target in OSA-induced CVD.
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Affiliation(s)
- Mohammad Badran
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, 400 N Keene St, Suite 010, Columbia, MO 65201, USA;
| | - David Gozal
- Department of Child Health and Child Health Research Institute, School of Medicine, University of Missouri, 400 N Keene St, Suite 010, Columbia, MO 65201, USA;
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO 65201, USA
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8
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Qian L, Mehrabi Nasab E, Athari SM, Athari SS. Mitochondria signaling pathways in allergic asthma. J Investig Med 2022; 70:863-882. [PMID: 35168999 PMCID: PMC9016245 DOI: 10.1136/jim-2021-002098] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2021] [Indexed: 12/23/2022]
Abstract
Mitochondria, as the powerhouse organelle of cells, are greatly involved in regulating cell signaling pathways, including those related to the innate and acquired immune systems, cellular differentiation, growth, death, apoptosis, and autophagy as well as hypoxic stress responses in various diseases. Asthma is a chronic complicated airway disease characterized by airway hyperresponsiveness, eosinophilic inflammation, mucus hypersecretion, and remodeling of airway. The asthma mortality and morbidity rates have increased worldwide, so understanding the molecular mechanisms underlying asthma progression is necessary for new anti-asthma drug development. The lung is an oxygen-rich organ, and mitochondria, by sensing and processing O2, contribute to the generation of ROS and activation of pro-inflammatory signaling pathways. Asthma pathophysiology has been tightly associated with mitochondrial dysfunction leading to reduced ATP synthase activity, increased oxidative stress, apoptosis induction, and abnormal calcium homeostasis. Defects of the mitochondrial play an essential role in the pro-remodeling mechanisms of lung fibrosis and airway cells’ apoptosis. Identification of mitochondrial therapeutic targets can help repair mitochondrial biogenesis and dysfunction and reverse related pathological changes and lung structural remodeling in asthma. Therefore, we here overviewed the relationship between mitochondrial signaling pathways and asthma pathogenic mechanisms.
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Affiliation(s)
- Ling Qian
- Department of Pulmonary and Critical Care Medicine, Shanghai Fifth People's Hospital, Shanghai, China
| | - Entezar Mehrabi Nasab
- Department of Cardiology, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran (the Islamic Republic of)
| | | | - Seyyed Shamsadin Athari
- Department of Immunology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran (the Islamic Republic of)
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9
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Mank MM, Reed LF, Walton CJ, Barup MLT, Ather JL, Poynter ME. Therapeutic ketosis decreases methacholine hyperresponsiveness in mouse models of inherent obese asthma. Am J Physiol Lung Cell Mol Physiol 2022; 322:L243-L257. [PMID: 34936508 PMCID: PMC8782644 DOI: 10.1152/ajplung.00309.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/13/2021] [Accepted: 12/17/2021] [Indexed: 02/03/2023] Open
Abstract
Obese asthmatics tend to have severe, poorly controlled disease and exhibit methacholine hyperresponsiveness manifesting in proximal airway narrowing and distal lung tissue collapsibility. Substantial weight loss in obese asthmatics or in mouse models of the condition decreases methacholine hyperresponsiveness. Ketone bodies are rapidly elevated during weight loss, coinciding with or preceding relief from asthma-related comorbidities. As ketone bodies may exert numerous potentially therapeutic effects, augmenting their systemic concentrations is being targeted for the treatment of several conditions. Circulating ketone body levels can be increased by feeding a ketogenic diet or by providing a ketone ester dietary supplement, which we hypothesized would exert protective effects in mouse models of inherent obese asthma. Weight loss induced by feeding a low-fat diet to mice previously fed a high-fat diet was preceded by increased urine and blood levels of the ketone body β-hydroxybutyrate (BHB). Feeding a ketogenic diet for 3 wk to high-fat diet-fed obese mice or genetically obese db/db mice increased BHB concentrations and decreased methacholine hyperresponsiveness without substantially decreasing body weight. Acute ketone ester administration decreased methacholine responsiveness of normal mice, and dietary ketone ester supplementation of high-fat diet-fed mice decreased methacholine hyperresponsiveness. Ketone ester supplementation also transiently induced an "antiobesogenic" gut microbiome with a decreased Fermicutes/Bacteroidetes ratio. Dietary interventions to increase systemic BHB concentrations could provide symptom relief for obese asthmatics without the need for the substantial weight loss required of patients to elicit benefits to their asthma through bariatric surgery or other diet or lifestyle alterations.
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Affiliation(s)
- Madeleine M Mank
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Leah F Reed
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Camille J Walton
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Madison L T Barup
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Jennifer L Ather
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Matthew E Poynter
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
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Milton AV, Konrad DB. Epithelial-mesenchymal transition and H 2O 2 signaling - a driver of disease progression and a vulnerability in cancers. Biol Chem 2022; 403:377-390. [PMID: 35032422 DOI: 10.1515/hsz-2021-0341] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 12/18/2021] [Indexed: 12/20/2022]
Abstract
Mutation-selective drugs constitute a great advancement in personalized anticancer treatment with increased quality of life and overall survival in cancers. However, the high adaptability and evasiveness of cancers can lead to disease progression and the development of drug resistance, which cause recurrence and metastasis. A common characteristic in advanced neoplastic cancers is the epithelial-mesenchymal transition (EMT) which is strongly interconnected with H2O2 signaling, increased motility and invasiveness. H2O2 relays its signal through the installation of oxidative posttranslational modifications on cysteines. The increased H2O2 levels that are associated with an EMT confer a heightened sensitivity towards the induction of ferroptosis as a recently discovered vulnerability.
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Affiliation(s)
- Anna V Milton
- Department of Pharmacy, Ludwig Maximilian University of Munich, Butenandtstr. 5-13, Haus C, D-81377 Munich, Germany
| | - David B Konrad
- Department of Pharmacy, Ludwig Maximilian University of Munich, Butenandtstr. 5-13, Haus C, D-81377 Munich, Germany
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11
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Caldeira DDAF, Weiss DJ, Rocco PRM, Silva PL, Cruz FF. Mitochondria in Focus: From Function to Therapeutic Strategies in Chronic Lung Diseases. Front Immunol 2021; 12:782074. [PMID: 34887870 PMCID: PMC8649841 DOI: 10.3389/fimmu.2021.782074] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 10/29/2021] [Indexed: 01/14/2023] Open
Abstract
Mitochondria are essential organelles for cell metabolism, growth, and function. Mitochondria in lung cells have important roles in regulating surfactant production, mucociliary function, mucus secretion, senescence, immunologic defense, and regeneration. Disruption in mitochondrial physiology can be the central point in several pathophysiologic pathways of chronic lung diseases such as chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, and asthma. In this review, we summarize how mitochondria morphology, dynamics, redox signaling, mitophagy, and interaction with the endoplasmic reticulum are involved in chronic lung diseases and highlight strategies focused on mitochondrial therapy (mito-therapy) that could be tested as a potential therapeutic target for lung diseases.
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Affiliation(s)
- Dayene de Assis Fernandes Caldeira
- Laboratory of Pulmonary Investigation, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Daniel J Weiss
- Department of Medicine, College of Medicine, University of Vermont, Burlington, VT, United States
| | - Patricia Rieken Macêdo Rocco
- Laboratory of Pulmonary Investigation, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil.,Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil
| | - Pedro Leme Silva
- Laboratory of Pulmonary Investigation, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil.,Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil
| | - Fernanda Ferreira Cruz
- Laboratory of Pulmonary Investigation, Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil.,Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil
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12
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Lv C, Li H, Cui H, Bi Q, Wang M. Solid lipid nanoparticle delivery of rhynchophylline enhanced the efficiency of allergic asthma treatment via the upregulation of suppressor of cytokine signaling 1 by repressing the p38 signaling pathway. Bioengineered 2021; 12:8635-8649. [PMID: 34629023 PMCID: PMC8806963 DOI: 10.1080/21655979.2021.1988364] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Allergic asthma is one of the most common chronic airway diseases, and there is still a lack of effective drugs for the treatment of allergic asthma. The purpose of this work is to formulate rhynchophylline (Rhy)-solid lipid nanoparticles (SLNs) to improve their therapeutic efficacy in a mice allergic model of asthma. A solvent injection method was employed to prepare the Rhy-SLNs. Physicochemical characterization of Rhy-SLNs was measured, and the release assessment was investigated, followed by the release kinetics. Next, a model of murine experimental asthma was established. Mice were subcutaneously injected with 20 μg ovalbumin mixed with 1 mg aluminum hydroxide on days 0, 14, 28, and 42 and administrated aerosolized 1% ovalbumin (w/v) by inhalation from day 21 to day 42. Mice were intraperitoneally injected with 20 mg/kg Rhy-SLNs or Rhy at one hour before the airway challenge with ovalbumin. The results showed that Rhy-SLNs revealed a mean particle size of 62.06 ± 1.62 nm with a zeta potential value of −6.53 ± 0.04 mV and 82.6 ± 1.8% drug entrapment efficiency. The release curve of Rhy-SLNs was much higher than the drug released in phosphate buffer saline at 0, 1, 1.5, 2, 4, or 6 h. Moreover, Rhy-SLNs exerted better effects on inhibiting ovalbumin-induced airway inflammation, oxidative stress, airway remodeling (including collagen deposition and mucus gland hyperplasia) than Rhy in murine experimental asthma. Subsequently, we found that Rhy-SLNs relieved allergic asthma via the upregulation of the suppressor of cytokine signaling 1 by repressing the p38 signaling pathway.
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Affiliation(s)
- Chuanfeng Lv
- Department of Pharmacology, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Hui Li
- Department of Medical Affairs, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Hongxia Cui
- Department of Respiratory Oncology, Jining No.1 People's Hospital, Jining, Shandong, China
| | - Qianyu Bi
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Meng Wang
- Department of Medical Affairs, Jining No.1 People's Hospital, Jining, Shandong, China
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13
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Michaeloudes C, Abubakar-Waziri H, Lakhdar R, Raby K, Dixey P, Adcock IM, Mumby S, Bhavsar PK, Chung KF. Molecular mechanisms of oxidative stress in asthma. Mol Aspects Med 2021; 85:101026. [PMID: 34625291 DOI: 10.1016/j.mam.2021.101026] [Citation(s) in RCA: 102] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 09/15/2021] [Indexed: 01/18/2023]
Abstract
The lungs are exposed to reactive oxygen species oxygen (ROS) produced as a result of inhalation of oxygen, as well as smoke and other air pollutants. Cell metabolism and the NADPH oxidases (Nox) generate low levels of intracellular ROS that act as signal transduction mediators by inducing oxidative modifications of histones, enzymes and transcription factors. Redox signalling is also regulated by localised production and sensing of ROS in mitochondria, the endoplasmic reticulum (ER) and inside the nucleus. Intracellular ROS are maintained at low levels through the action of a battery of enzymatic and non-enzymatic antioxidants. Asthma is a heterogeneous airway inflammatory disease with different immune endotypes; these include atopic or non-atopic Th2 type immune response associated with eosinophilia, or a non-Th2 response associated with neutrophilia. Airway remodelling and hyperresponsiveness accompany the inflammatory response in asthma. Over-production of ROS resulting from infiltrating immune cells, particularly eosinophils and neutrophils, and a concomitant impairment of antioxidant responses lead to development of oxidative stress in asthma. Oxidative stress is augmented in severe asthma and during exacerbations, as well as by air pollution and obesity, and causes oxidative damage of tissues promoting airway inflammation and hyperresponsiveness. Furthermore, deregulated Nox activity, mitochondrial dysfunction, ER stress and/or oxidative DNA damage, resulting from exposure to irritants, inflammatory mediators or obesity, may lead to redox-dependent changes in cell signalling. ROS play a central role in airway epithelium-mediated sensing, development of innate and adaptive immune responses, and airway remodelling and hyperresponsiveness. Nonetheless, antioxidant compounds have proven clinically ineffective as therapeutic agents for asthma, partly due to issues with stability and in vivo metabolism of these compounds. The compartmentalised nature of ROS production and sensing, and the role of ROS in homeostatic responses and in the action of corticosteroids and β2-adrenergic receptor agonists, adds another layer of complexity to antioxidant therapy development. Nox inhibitors and mitochondrial-targeted antioxidants are in clinical development for a number of diseases but they have not yet been investigated in asthma. A better understanding of the complex role of ROS in the pathogenesis of asthma will highlight new opportunities for more targeted and effective redox therapies.
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Affiliation(s)
- Charalambos Michaeloudes
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom.
| | - Hisham Abubakar-Waziri
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Ramzi Lakhdar
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Katie Raby
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Piers Dixey
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Ian M Adcock
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Sharon Mumby
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Pankaj K Bhavsar
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom; Royal Brompton & Harefield NHS Trust, London, UK
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14
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Schuliga M, Read J, Knight DA. Ageing mechanisms that contribute to tissue remodeling in lung disease. Ageing Res Rev 2021; 70:101405. [PMID: 34242806 DOI: 10.1016/j.arr.2021.101405] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/13/2021] [Accepted: 07/02/2021] [Indexed: 12/12/2022]
Abstract
Age is a major risk factor for chronic respiratory diseases such as idiopathic pulmonary fibrosis (IPF), chronic obstructive pulmonary disease (COPD) and certain phenotypes of asthma. The recent COVID-19 pandemic also highlights the increased susceptibility of the elderly to acute respiratory distress syndrome (ARDS), a diffuse inflammatory lung injury with often long-term effects (ie parenchymal fibrosis). Collectively, these lung conditions are characterized by a pathogenic reparative process that, rather than restoring organ function, contributes to structural and functional tissue decline. In the ageing lung, the homeostatic control of wound healing following challenge or injury has an increased likelihood of being perturbed, increasing susceptibility to disease. This loss of fidelity is a consequence of a diverse range of underlying ageing mechanisms including senescence, mitochondrial dysfunction, proteostatic stress and diminished autophagy that occur within the lung, as well as in other tissues, organs and systems of the body. These ageing pathways are highly interconnected, involving localized and systemic increases in inflammatory mediators and damage associated molecular patterns (DAMPs); along with corresponding changes in immune cell function, metabolism and composition of the pulmonary and gut microbiomes. Here we comprehensively review the roles of ageing mechanisms in the tissue remodeling of lung disease.
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Affiliation(s)
- Michael Schuliga
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia; Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.
| | - Jane Read
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia; Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Darryl A Knight
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, NSW, Australia; Hunter Medical Research Institute, New Lambton Heights, NSW, Australia; Providence Health Care Research Institute, Vancouver, British Columbia, Canada
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15
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Rakowski M, Porębski S, Grzelak A. Silver Nanoparticles Modulate the Epithelial-to-Mesenchymal Transition in Estrogen-Dependent Breast Cancer Cells In Vitro. Int J Mol Sci 2021; 22:9203. [PMID: 34502112 PMCID: PMC8431224 DOI: 10.3390/ijms22179203] [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: 07/28/2021] [Revised: 08/15/2021] [Accepted: 08/23/2021] [Indexed: 12/12/2022] Open
Abstract
Silver nanoparticles (AgNPs) are frequently detected in many convenience goods, such as cosmetics, that are applied directly to the skin. AgNPs accumulated in cells can modulate a wide range of molecular pathways, causing direct changes in cells. The aim of this study is to assess the capability of AgNPs to modulate the metastasis of breast cancer cells through the induction of epithelial-to-mesenchymal transition (EMT). The effect of the AgNPs on MCF-7 cells was investigated via the sulforhodamine B method, the wound healing test, generation of reactive oxygen species (ROS), the standard cytofluorimetric method of measuring the cell cycle, and the expression of EMT marker proteins and the MTA3 protein via Western blot. To fulfill the results, calcium flux and HDAC activity were measured. Additionally, mitochondrial membrane potential was measured to assess the direct impact of AgNPs on mitochondria. The results indicated that the MCF-7 cells are resistant to the cytotoxic effect of AgNPs and have higher mobility than the control cells. Treatment with AgNPs induced a generation of ROS; however, it did not affect the cell cycle but modulated the expression of EMT marker proteins and the MTA3 protein. Mitochondrial membrane potential and calcium flux were not altered; however, the AgNPs did modulate the total HDAC activity. The presented data support our hypothesis that AgNPs modulate the metastasis of MCF-7 cells through the EMT pathway. These results suggest that AgNPs, by inducing reactive oxygen species generation, alter the metabolism of breast cancer cells and trigger several pathways related to metastasis.
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Affiliation(s)
- Michał Rakowski
- The Bio-Med-Chem Doctoral School of the University of Lodz and Lodz Institutes of the Polish Academy of Sciences, University of Lodz, 90-237 Lodz, Poland
- Cytometry Laboratory, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
| | - Szymon Porębski
- Cytometry Laboratory, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
| | - Agnieszka Grzelak
- Cytometry Laboratory, Department of Molecular Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland;
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16
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Rodriguez-Coira J, Villaseñor A, Izquierdo E, Huang M, Barker-Tejeda TC, Radzikowska U, Sokolowska M, Barber D. The Importance of Metabolism for Immune Homeostasis in Allergic Diseases. Front Immunol 2021; 12:692004. [PMID: 34394086 PMCID: PMC8355700 DOI: 10.3389/fimmu.2021.692004] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/05/2021] [Indexed: 12/27/2022] Open
Abstract
There is increasing evidence that the metabolic status of T cells and macrophages is associated with severe phenotypes of chronic inflammation, including allergic inflammation. Metabolic changes in immune cells have a crucial role in their inflammatory or regulatory responses. This notion is reinforced by metabolic diseases influencing global energy metabolism, such as diabetes or obesity, which are known risk factors of severity in inflammatory conditions, due to the metabolic-associated inflammation present in these patients. Since several metabolic pathways are closely tied to T cell and macrophage differentiation, a better understanding of metabolic alterations in immune disorders could help to restore and modulate immune cell functions. This link between energy metabolism and inflammation can be studied employing animal, human or cellular models. Analytical approaches rank from classic immunological studies to integrated analysis of metabolomics, transcriptomics, and proteomics. This review summarizes the main metabolic pathways of the cells involved in the allergic reaction with a focus on T cells and macrophages and describes different models and platforms of analysis used to study the immune system and its relationship with metabolism.
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Affiliation(s)
- Juan Rodriguez-Coira
- Departamento de Ciencias Medicas Basicas, Instituto de Medicina Molecular Aplicada (IMMA), Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Boadilla Del Monte, Madrid, Spain.,Centre for Metabolomics and Bioanalysis (CEMBIO), Department of Chemistry and Biochemistry, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Boadilla Del Monte, Madrid, Spain.,Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos Wolfgang, Switzerland
| | - Alma Villaseñor
- Departamento de Ciencias Medicas Basicas, Instituto de Medicina Molecular Aplicada (IMMA), Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Boadilla Del Monte, Madrid, Spain.,Centre for Metabolomics and Bioanalysis (CEMBIO), Department of Chemistry and Biochemistry, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Boadilla Del Monte, Madrid, Spain
| | - Elena Izquierdo
- Departamento de Ciencias Medicas Basicas, Instituto de Medicina Molecular Aplicada (IMMA), Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Boadilla Del Monte, Madrid, Spain
| | - Mengting Huang
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos Wolfgang, Switzerland
| | - Tomás Clive Barker-Tejeda
- Departamento de Ciencias Medicas Basicas, Instituto de Medicina Molecular Aplicada (IMMA), Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Boadilla Del Monte, Madrid, Spain.,Centre for Metabolomics and Bioanalysis (CEMBIO), Department of Chemistry and Biochemistry, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Boadilla Del Monte, Madrid, Spain
| | - Urszula Radzikowska
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos Wolfgang, Switzerland
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos Wolfgang, Switzerland
| | - Domingo Barber
- Departamento de Ciencias Medicas Basicas, Instituto de Medicina Molecular Aplicada (IMMA), Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Boadilla Del Monte, Madrid, Spain
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17
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Mitochondrial Dysfunction in Chronic Respiratory Diseases: Implications for the Pathogenesis and Potential Therapeutics. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5188306. [PMID: 34354793 PMCID: PMC8331273 DOI: 10.1155/2021/5188306] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/30/2021] [Accepted: 07/16/2021] [Indexed: 02/07/2023]
Abstract
Mitochondria are indispensable for energy metabolism and cell signaling. Mitochondrial homeostasis is sustained with stabilization of mitochondrial membrane potential, balance of mitochondrial calcium, integrity of mitochondrial DNA, and timely clearance of damaged mitochondria via mitophagy. Mitochondrial dysfunction is featured by increased generation of mitochondrial reactive oxygen species, reduced mitochondrial membrane potential, mitochondrial calcium imbalance, mitochondrial DNA damage, and abnormal mitophagy. Accumulating evidence indicates that mitochondrial dysregulation causes oxidative stress, inflammasome activation, apoptosis, senescence, and metabolic reprogramming. All these cellular processes participate in the pathogenesis and progression of chronic respiratory diseases, including chronic obstructive pulmonary disease, pulmonary fibrosis, and asthma. In this review, we provide a comprehensive and updated overview of the impact of mitochondrial dysfunction on cellular processes involved in the development of these respiratory diseases. This not only implicates mechanisms of mitochondrial dysfunction for the pathogenesis of chronic lung diseases but also provides potential therapeutic approaches for these diseases by targeting dysfunctional mitochondria.
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18
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Iwata Y, Sakai N, Nakajima Y, Oshima M, Nakagawa-Yoneda S, Ogura H, Sato K, Minami T, Kitajima S, Toyama T, Yamamura Y, Miyagawa T, Hara A, Shimizu M, Furuichi K, Wada T. Anti-fibrotic potential of erythropoietin signaling on bone marrow derived fibrotic cell. BMC Nephrol 2021; 22:203. [PMID: 34059008 PMCID: PMC8167964 DOI: 10.1186/s12882-021-02411-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 05/13/2021] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION The number of patients with end stage kidney disease (ESKD) are increasing world-side. While interstitial fibrosis (IF) is a common step for the progression to ESKD, therapeutic options for IF is still limited in clinical settings. We have reported that bone marrow-derived fibrotic cell, fibrocyte, is involved in the pathogenesis of kidney fibrosis. Also recent studies revealed that erythropoietin has protective effect on kidney diseases. However, it is unknown whether erythropoietin (EPO) inhibits fibrosis in progressive kidney injury. Therefore, we explored the impacts of EPO on kidney fibrosis with focusing on fibrocyte. METHOD Fibrocyte was differentiated from peripheral mononuclear cells of healthy donor. Fibrocyte was stimulated with transforming growth factor beta (TGF)-β with/without EPO treatment. Moreover, the therapeutic effect of EPO was evaluated in murine unilateral ureteral obstruction (UUO) model. RESULT TGF-β stimulation increased the expression of COL1 mRNA in fibrocyte. EPO signal reduced the expression of COL1 mRNA in dose dependent manner. EPO reduced mitochondrial oxidative stress and ameliorated mitochondrial membrane depolarization induced by TGF-β stimulation. Moreover, EPO reduced the mRNA expression of mitochondria related molecules, TRAF6, in fibrocyte. In addition, the count of CD45+/αSMA + double-positive fibrocyte was decreased in the EPO-administered UUO kidneys. CONCLUSION EPO signals function to prevent kidney fibrosis, particularly in fibrocyte. Regulating the renal accumulation of fibrocyte is a part of the anti-fibrotic functions of EPO.
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Affiliation(s)
- Yasunori Iwata
- Division of Infection Control, Department of Nephrology and Laboratory Medicine, Kanazawa University, 13-1 Takara-machi, 920-8641, Kanazawa , Japan. .,Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan.
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan.,Division of Blood Purification, Kanazawa University Hospital, Ishikawa, Kanazawa, Japan
| | - Yuki Nakajima
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Megumi Oshima
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | | | - Hisayuki Ogura
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Koichi Sato
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Taichiro Minami
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Shinji Kitajima
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan.,Division of Blood Purification, Kanazawa University Hospital, Ishikawa, Kanazawa, Japan
| | - Tadashi Toyama
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Yuta Yamamura
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Taro Miyagawa
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Akinori Hara
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Miho Shimizu
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Kengo Furuichi
- Division of Nephrology, Kanazawa Medical University School of Medicine, Ishikawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
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19
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Kumari A, Shonibare Z, Monavarian M, Arend RC, Lee NY, Inman GJ, Mythreye K. TGFβ signaling networks in ovarian cancer progression and plasticity. Clin Exp Metastasis 2021; 38:139-161. [PMID: 33590419 PMCID: PMC7987693 DOI: 10.1007/s10585-021-10077-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 02/03/2021] [Indexed: 02/06/2023]
Abstract
Epithelial ovarian cancer (EOC) is a leading cause of cancer-related death in women. Late-stage diagnosis with significant tumor burden, accompanied by recurrence and chemotherapy resistance, contributes to this poor prognosis. These morbidities are known to be tied to events associated with epithelial-mesenchymal transition (EMT) in cancer. During EMT, localized tumor cells alter their polarity, cell-cell junctions, cell-matrix interactions, acquire motility and invasiveness and an exaggerated potential for metastatic spread. Key triggers for EMT include the Transforming Growth Factor-β (TGFβ) family of growth factors which are actively produced by a wide array of cell types within a specific tumor and metastatic environment. Although TGFβ can act as either a tumor suppressor or promoter in cancer, TGFβ exhibits its pro-tumorigenic functions at least in part via EMT. TGFβ regulates EMT both at the transcriptional and post-transcriptional levels as outlined here. Despite recent advances in TGFβ based therapeutics, limited progress has been seen for ovarian cancers that are in much need of new therapeutic strategies. Here, we summarize and discuss several recent insights into the underlying signaling mechanisms of the TGFβ isoforms in EMT in the unique metastatic environment of EOCs and the current therapeutic interventions that may be relevant.
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Affiliation(s)
- Asha Kumari
- Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, WTI 320B, 1824 Sixth Avenue South, Birmingham, AL, 35294, USA
| | - Zainab Shonibare
- Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, WTI 320B, 1824 Sixth Avenue South, Birmingham, AL, 35294, USA
| | - Mehri Monavarian
- Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, WTI 320B, 1824 Sixth Avenue South, Birmingham, AL, 35294, USA
| | - Rebecca C Arend
- Department of Obstetrics and Gynecology-Gynecologic Oncology, University of Alabama at Birmingham, Birmingham, AL, 35233, USA
| | - Nam Y Lee
- Division of Pharmacology, Chemistry and Biochemistry, College of Medicine, University of Arizona, Tucson, AZ, 85721, USA
| | - Gareth J Inman
- Cancer Research UK Beatson Institute and Institute of Cancer Sciences, University of Glasgow, Glasgow, UK
| | - Karthikeyan Mythreye
- Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, WTI 320B, 1824 Sixth Avenue South, Birmingham, AL, 35294, USA.
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20
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Hiebert P. The Nrf2 transcription factor: A multifaceted regulator of the extracellular matrix. Matrix Biol Plus 2021; 10:100057. [PMID: 34195594 PMCID: PMC8233472 DOI: 10.1016/j.mbplus.2021.100057] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 02/06/2023] Open
Abstract
The transcription factor nuclear factor-erythroid 2-related factor 2 (Nrf2) is widely recognized as a master regulator of the cellular stress response by facilitating the transcription of cytoprotective genes. As such, the Nrf2 pathway is critical in guarding the cell from the harmful effects of excessive reactive oxygen species/reactive nitrogen species (ROS/RNS) and in maintaining cellular redox balance. While excessive ROS/RNS are harmful to the cell, physiological levels of ROS/RNS play important roles in regulating numerous signaling pathways important for normal cellular function, including the synthesis of extracellular matrix (ECM). Recent advances have underscored the importance of ROS/RNS, and by extension, factors that influence redox-balance such as Nrf2, in regulating ECM production and deposition. In addition to reducing the oxidative burden in the cell, the discovery that Nrf2 can also directly target genes that regulate and form the ECM has cemented it as a multifaceted player in the regulation of ECM proteins, and provides new insight into its potential usefulness as a target for treating ECM-related pathologies. Reactive oxygen/nitrogen species regulate extracellular matrix. Nrf2 can directly target extracellular matrix gene transcription. Regulation of extracellular matrix by Nrf2 potentially impacts tissue repair/cancer.
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Affiliation(s)
- Paul Hiebert
- Institute for Molecular Health Sciences, Department of Biology, ETH Zürich, Zürich 8093, Switzerland
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21
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Hung CH, Lin YC, Tsai YG, Lin YC, Kuo CH, Tsai ML, Kuo CH, Liao WT. Acrylamide Induces Mitophagy and Alters Macrophage Phenotype via Reactive Oxygen Species Generation. Int J Mol Sci 2021; 22:ijms22041683. [PMID: 33567502 PMCID: PMC7914752 DOI: 10.3390/ijms22041683] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/02/2021] [Accepted: 02/05/2021] [Indexed: 12/17/2022] Open
Abstract
Acrylamide is a readily exposed toxic organic compound due to its formation in many carbohydrate rich foods that are cooked at high temperatures. Excessive production of reactive oxygen species (ROS), which is an important factor for mitophagy, has been reported to lead to airway inflammation, hyper-responsiveness, and remodeling. Epigenetic regulation is an important modification affecting gene transcription. In this study, the effects of acrylamide on ROS productions and mitophagy were investigated. The human monocytic cell line THP-1 was treated with acrylamide, and ROS productions were investigated by flow cytometry. The mitochondrial and epigenetic involvement was evaluated by quantitative real-time PCR. Histone modifications were examined by chromatin immunoprecipitation assays. Mitophagy was detected by Western blotting and confocal laser microscopy. Acrylamide promoted mitochondria-specific ROS generation in macrophages. The gene expression of mitochondrial respiratory chain complex II SDHA was increased under acrylamide treatment. Acrylamide induced histone H3K4 and H3K36 tri-methylation in an SDHA promoter and increased mitophagy-related PINK1 expression, which promoted a M2-like phenotypic switch with increase TGF-β and CCL2 levels in THP-1 cells. In conclusion, acrylamide induced ROS production through histone tri-methylation in an SDHA promoter and further increased the expression of mitophagy-related PINK-1, which was associated with a macrophage M2 polarization shift.
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Affiliation(s)
- Chih-Hsing Hung
- Department of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Department of Pediatrics, Faculty of Pediatrics, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Pediatrics, Kaohsiung Municipal Siaogang Hospital, Kaohsiung 812, Taiwan
| | - Yi-Ching Lin
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Doctoral Degree Program of Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Laboratory Medicine, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yi-Giien Tsai
- Department of Pediatrics, Changhua Christian Children Hospital, Changhua 500, Taiwan;
- School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
| | - Yu-Chih Lin
- Department of Medical Humanities and Education, School of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Division of Allergology, Immunology and Rheumatology, Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chia-Hong Kuo
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Mei-Lan Tsai
- Department of Pediatrics, Faculty of Pediatrics, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chao-Hung Kuo
- Department of Internal Medicine, Kaohsiung Municipal Siaogang Hospital, Kaohsiung 812, Taiwan
- Division of Gastroenterology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Department of Medicine, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Correspondence: (C.-H.K.); (W.-T.L.); Tel.: +886-7-312-1101 (ext. 2791) (W.-T.L.); Fax: +886-7-312-5339 (W.-T.L.)
| | - Wei-Ting Liao
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Correspondence: (C.-H.K.); (W.-T.L.); Tel.: +886-7-312-1101 (ext. 2791) (W.-T.L.); Fax: +886-7-312-5339 (W.-T.L.)
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22
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Niu J, Zhao W, Lu DQ, Xie JJ, He XS, Fang HH, Liao SY. Dual-Function Analysis of Astaxanthin on Golden Pompano ( Trachinotus ovatus) and Its Role in the Regulation of Gastrointestinal Immunity and Retinal Mitochondrial Dysfunction Under Hypoxia Conditions. Front Physiol 2020; 11:568462. [PMID: 33335485 PMCID: PMC7736049 DOI: 10.3389/fphys.2020.568462] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 10/22/2020] [Indexed: 11/17/2022] Open
Abstract
The present study investigated the potential mechanisms of astaxanthin in the regulation of gastrointestinal immunity and retinal mitochondrial function of golden pompano (Trachinotus ovatus). Triplicate groups of juvenile T. ovatus (mean initial weight: 6.03 ± 0.01 g) were fed one of six diets (D1, D2, D3, D4, D5, and D6) for 8 weeks, with each diet containing various concentrations of astaxanthin (0, 0.0005, 0.001, 0.005, 0.01, or 0.1%, respectively). Growth performance of fish fed the D2–D5 diets was higher than that of fish fed the D1 diet; however, growth performance and survival of fish deteriorated sharply in fish fed the D6 diet. Gut villus in fish fed the D2–D5 diets were significantly longer and wider than that of fish fed the D6 diet. Feeding with D2–D5 diets led to increased abundance of Bacillus, Pseudomonas, Oceanobacillus, Lactococcus, Halomonas, Lactobacillus, and Psychrobacter while abundance of Vibrio and Bacterium decreased. Additionally, feeding with the D6 diet resulted in a sharp decline in Pseudomonas and Lactobacillus abundance and a sharp increase in Vibrio abundance. A low dissolved oxygen environment (DO, 1.08 mg/L) was conducted for 10 h after the rearing trial. No fish mortality was observed for any of the diet treatments. Lysozyme (LZY) activity in fish fed the D6 diet decreased sharply and was significantly lower than that in other groups. ROS production also decreased sharply in fish fed the D6 diet. Moreover, the conjunctiva and sclera in the fish fed the D6 diet were indistinguishable. Suitable dietary astaxanthin supplementation levels (0.005–0.1%) exerting a neuroprotective effect from low dissolved oxygen environments is due to up-regulated expression of anti-apoptotic factors, such as phosphorylated Bcl-2-associated death promoter (pBAD), phosphorylated glycogen synthase kinase-3β (pGSK-3β), Bcl-2 extra large (Bcl-xL), and down-regulated expression of Bcl-2-associated X protein (Bax) pro-apoptotic factor in retinas. Furthermore, suitable dietary astaxanthin levels (0.0005–0.01%) suppressed up-regulation of critical mitochondrial components, such as peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), mitochondrial transcription factor A (TFAM), and mitochondrial DNA (mtDNA), while excessive astaxanthin supplementation produces the opposite effect. In brief, high-dose astaxanthin arouses and aggravates low dissolved oxygen-induced inflammation, oxidative stress, intestinal disorder, retinal apoptosis, and retinal mitochondrial dysfunction in T. ovatus. Second-degree polynomial regression of WG indicated that the optimum dietary astaxanthin for juvenile T. ovatus is 0.049%.
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Affiliation(s)
- Jin Niu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animal and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wei Zhao
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animal and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Dan-Qi Lu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animal and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jia-Jun Xie
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animal and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xuan-Shu He
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animal and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Hao-Hang Fang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animal and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shi-Yu Liao
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animal and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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23
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Expression of Concern: Mitochondrial-Targeted Antioxidant Therapy Decreases Transforming Growth Factor-β-Mediated Collagen Production in a Murine Asthma Model. Am J Respir Cell Mol Biol 2020; 63:868. [PMID: 33258681 PMCID: PMC7790150 DOI: 10.1165/rcmb.v63retraction1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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24
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Brand MD. Riding the tiger - physiological and pathological effects of superoxide and hydrogen peroxide generated in the mitochondrial matrix. Crit Rev Biochem Mol Biol 2020; 55:592-661. [PMID: 33148057 DOI: 10.1080/10409238.2020.1828258] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Elevated mitochondrial matrix superoxide and/or hydrogen peroxide concentrations drive a wide range of physiological responses and pathologies. Concentrations of superoxide and hydrogen peroxide in the mitochondrial matrix are set mainly by rates of production, the activities of superoxide dismutase-2 (SOD2) and peroxiredoxin-3 (PRDX3), and by diffusion of hydrogen peroxide to the cytosol. These considerations can be used to generate criteria for assessing whether changes in matrix superoxide or hydrogen peroxide are both necessary and sufficient to drive redox signaling and pathology: is a phenotype affected by suppressing superoxide and hydrogen peroxide production; by manipulating the levels of SOD2, PRDX3 or mitochondria-targeted catalase; and by adding mitochondria-targeted SOD/catalase mimetics or mitochondria-targeted antioxidants? Is the pathology associated with variants in SOD2 and PRDX3 genes? Filtering the large literature on mitochondrial redox signaling using these criteria highlights considerable evidence that mitochondrial superoxide and hydrogen peroxide drive physiological responses involved in cellular stress management, including apoptosis, autophagy, propagation of endoplasmic reticulum stress, cellular senescence, HIF1α signaling, and immune responses. They also affect cell proliferation, migration, differentiation, and the cell cycle. Filtering the huge literature on pathologies highlights strong experimental evidence that 30-40 pathologies may be driven by mitochondrial matrix superoxide or hydrogen peroxide. These can be grouped into overlapping and interacting categories: metabolic, cardiovascular, inflammatory, and neurological diseases; cancer; ischemia/reperfusion injury; aging and its diseases; external insults, and genetic diseases. Understanding the involvement of mitochondrial matrix superoxide and hydrogen peroxide concentrations in these diseases can facilitate the rational development of appropriate therapies.
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25
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Parsanathan R, Jain SK. Glucose-6-Phosphate Dehydrogenase Deficiency Activates Endothelial Cell and Leukocyte Adhesion Mediated via the TGFβ/NADPH Oxidases/ROS Signaling Pathway. Int J Mol Sci 2020; 21:ijms21207474. [PMID: 33050491 PMCID: PMC7589139 DOI: 10.3390/ijms21207474] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/02/2020] [Accepted: 10/08/2020] [Indexed: 02/07/2023] Open
Abstract
Glucose-6-phosphate dehydrogenase (G6PD) deficiency, the most common genetic inherited trait among humans, affects ~7% of the global population, and is associated with excess risk of cardiovascular disease (CVD). Transforming growth factor-β (TGF-β) regulates immune function, proliferation, epithelial-mesenchymal transition, fibrosis, cancer, and vascular dysfunction. This study examined whether G6PD deficiencies can alter TGF-β-mediated NADPH oxidases (NOX) and cell adhesion molecules (CAM) in human aortic endothelial cells (HAEC). Results show that treatment with high glucose and the saturated free fatty acid palmitate significantly downregulated G6PD; in contrast, mRNA levels of TGF-β components, NOX and its activity, and reactive oxygen species (ROS) were significantly upregulated in HAEC. The expression levels of TGF-β and its receptors, NOX and its activity, and ROS were significantly higher in HG-exposed G6PD-deficient cells (G6PD siRNA) compared to G6PD-normal cells. The protein levels of adhesion molecules (ICAM-1 and VCAM-1) and inflammatory cytokines (MCP-1 and TNF) were significantly increased in HG-exposed G6PD-deficient cells compared to G6PD-normal cells. The adherence of monocytes (SC cells) to HAEC was significantly elevated in HG-treated G6PD-deficient cells compared to control cells. Pharmacological inhibition of G6PD enhances ROS, NOX and its activity, and endothelial monocyte adhesion; these effects were impeded by NOX inhibitors. The inhibition of TGF-β prevents NOX2 and NOX4 mRNA expression and activity, ROS, and adhesion of monocytes to HAEC. L-Cysteine ethyl ester (cell-permeable) suppresses the mRNA levels of TGF-β and its receptors, along with NOX2 and NOX4, and decreases NOX activity, ROS, and adhesion of monocytes to HAEC. This suggests that G6PD deficiency promotes TGF-β/NADPH oxidases/ROS signaling, the expression of ICAM-1 and VCAM-1, and the adhesion of leukocytes to the endothelial monolayer, which can contribute to a higher risk for CVD.
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26
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PAI-1, the Plasminogen System, and Skeletal Muscle. Int J Mol Sci 2020; 21:ijms21197066. [PMID: 32993026 PMCID: PMC7582753 DOI: 10.3390/ijms21197066] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/21/2020] [Accepted: 09/23/2020] [Indexed: 12/14/2022] Open
Abstract
The plasminogen system is a critical proteolytic system responsible for the remodeling of the extracellular matrix (ECM). The master regulator of the plasminogen system, plasminogen activator inhibitor-1 (PAI-1), has been implicated for its role in exacerbating various disease states not only through the accumulation of ECM (i.e., fibrosis) but also its role in altering cell fate/behaviour. Examination of PAI-1 has extended through various tissues and cell-types with recent investigations showing its presence in skeletal muscle. In skeletal muscle, the role of this protein has been implicated throughout the regeneration process, and in skeletal muscle pathologies (muscular dystrophy, diabetes, and aging-driven pathology). Needless to say, the complete function of this protein in skeletal muscle has yet to be fully elucidated. Given the importance of skeletal muscle in maintaining overall health and quality of life, it is critical to understand the alterations—particularly in PAI-1—that occur to negatively impact this organ. Thus, we provide a comprehensive review of the importance of PAI-1 in skeletal muscle health and function. We aim to shed light on the relevance of this protein in skeletal muscle and propose potential therapeutic approaches to aid in the maintenance of skeletal muscle health.
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27
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Yi L, Cui J, Wang W, Tang W, Teng F, Zhu X, Qin J, Wuniqiemu T, Sun J, Wei Y, Dong J. Formononetin Attenuates Airway Inflammation and Oxidative Stress in Murine Allergic Asthma. Front Pharmacol 2020; 11:533841. [PMID: 33013383 PMCID: PMC7500463 DOI: 10.3389/fphar.2020.533841] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/12/2020] [Indexed: 12/14/2022] Open
Abstract
Allergic asthma has been considered as a respiratory disorder with pathological features of airway inflammation and remodeling, which involves oxidative stress. Formononetin (FMT) is a bioactive isoflavone obtained from Chinese herb Radix Astragali, and has been reported to have notable anti-inflammatory and antioxidant effects in several diseases. The purpose of our study was to elaborate the effects of FMT on asthma and the underlying mechanisms. To establish allergic asthma model, BALB/c mice were given ovalbumin (OVA) sensitization and challenge, treated with FMT (10, 20, 40 mg/kg) or dexamethasone (2 mg/kg). The effects of FMT on lung inflammation and oxidative stress were assessed. In OVA-induced asthmatic mice, FMT treatments significantly ameliorated lung function, alleviated lung inflammation including infiltration of inflammatory cells, the elevated levels of interleukin (IL)-4, IL-5, and IL-13, immunoglobulin (Ig) E, C-C motif chemokine ligand 5 (CCL5, also known as RANTES), CCL11 (also called Eotaxin-1), and IL-17A. In addition, FMT treatments eminently blunted goblet cell hyperplasia and collagen deposition, and remarkably reduced oxidative stress as displayed by decreased reactive oxygen species (ROS), and increased superoxide diamutase (SOD) activity. Furthermore, to clarify the potential mechanisms responsible for the effects, we determined the inflammation and oxidation-related signaling pathway including nuclear factor kappa β (NF-κB), c-Jun N-terminal kinase (JNK), and the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2). FMT treatments appeared to dramatically inhibit the activation of NF-κB and JNK, significantly elevated the expression of heme oxygenase 1 (HO-1) but failed to activate expression of Nrf2. In conclusion, our study suggested that FMT had the therapeutic effects in attenuating airway inflammation and oxidative stress in asthma.
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Affiliation(s)
- La Yi
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
| | - Jie Cui
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Wenqian Wang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Weifeng Tang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Fangzhou Teng
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Xueyi Zhu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Jingjing Qin
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Tulake Wuniqiemu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Jing Sun
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Ying Wei
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China.,Institutes of Integrative Medicine, Fudan University, Shanghai, China
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28
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Han Y, Chen L, Liu H, Jin Z, Wu Y, Wu Y, Li W, Ying S, Chen Z, Shen H, Yan F. Airway Epithelial cGAS Is Critical for Induction of Experimental Allergic Airway Inflammation. THE JOURNAL OF IMMUNOLOGY 2020; 204:1437-1447. [PMID: 32034061 DOI: 10.4049/jimmunol.1900869] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/06/2020] [Indexed: 12/17/2022]
Abstract
DNA damage could lead to the accumulation of cytosolic DNA, and the cytosolic DNA-sensing pathway has been implicated in multiple inflammatory diseases. However, the role of cytosolic DNA-sensing pathway in asthma pathogenesis is still unclear. This article explored the role of airway epithelial cyclic GMP-AMP synthase (cGAS), the major sensor of cytosolic dsDNA, in asthma pathogenesis. Cytosolic dsDNA accumulation in airway epithelial cells (ECs) was detected in the setting of allergic inflammation both in vitro and in vivo. Mice with cGAS deletion in airway ECs were used for OVA- or house dust mite (HDM)-induced allergic airway inflammation. Additionally, the effects of cGAS knockdown on IL-33-induced GM-CSF production and the mechanisms by which IL-33 induced cytosolic dsDNA accumulation in human bronchial epithelial (HBE) cells were explored. Increased accumulation of cytosolic dsDNA was observed in airway epithelium of OVA- or HDM-challenged mice and in HBE cells treated with IL-33. Deletion of cGAS in the airway ECs of mice significantly attenuated the allergic airway inflammation induced by OVA or HDM. Mechanistically, cGAS participates in promoting TH2 immunity likely via regulating the production of airway epithelial GM-CSF. Furthermore, Mito-TEMPO could reduce IL-33-induced cytoplasmic dsDNA accumulation in HBE cells possibly through suppressing the release of mitochondrial DNA into the cytosol. In conclusion, airway epithelial cGAS plays an important role via sensing the cytosolic dsDNA in asthma pathogenesis and could serve as a promising therapeutic target against allergic airway inflammation.
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Affiliation(s)
- Yinling Han
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Lin Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Huiwen Liu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Zhangchu Jin
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Yinfang Wu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Yanping Wu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Wen Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Songmin Ying
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Zhihua Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
| | - Huahao Shen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and .,State Key Lab of Respiratory Disease, Guangzhou, Guangdong 510120, China
| | - Fugui Yan
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; and
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29
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Yoon YH, Yeon SH, Choi MR, Jang YS, Kim JA, Oh HW, Jun X, Park SK, Heo JY, Rha KS, Kim YM. Altered Mitochondrial Functions and Morphologies in Epithelial Cells Are Associated With Pathogenesis of Chronic Rhinosinusitis With Nasal Polyps. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2020; 12:653-668. [PMID: 32400131 PMCID: PMC7224996 DOI: 10.4168/aair.2020.12.4.653] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 02/16/2020] [Accepted: 02/25/2020] [Indexed: 12/29/2022]
Abstract
Purpose Chronic rhinosinusitis with nasal polyps (CRSwNP) is a complex inflammatory disease of the nasal and paranasal sinus mucosa. The disease is associated with mitochondrial dysfunction, structural changes in the mitochondria, and reactive oxygen species (ROS) generation. This study investigated whether there are functional and morphological changes in the mitochondria in the epithelial cells of nasal polyps (NPs) and Staphylococcus aureus enterotoxin B (SEB)-stimulated nasal epithelial cells. Methods In all, 30 patients with CRSwNP and 15 healthy subjects were enrolled. Mitochondrial ROS (mtROS) and changes in mitochondrial functions and structures were investigated in the uncinate tissue (UT) of healthy controls, the UT or NPs of CRSwNP patients, and human nasal epithelial cells with or without SEB stimulation. Results Oxidative phosphorylation complexes showed various responses following SEB stimulation in the nasal epithelial cells, and their expressions were significantly higher in the NPs of patients with CRSwNP than in the UT of controls. Generation of mtROS was increased following SEB exposure in nasal epithelial cells and was reduced by pretreatment with MitoTEMPO, which is used as an mtROS scavenger. In the tissues, mtROS was significantly increased in the NPs of CRSwNP patients compared to the UT of controls or CRSwNP patients. The expressions of fusion- and fission-related molecules were also significantly higher in SEB-exposed nasal epithelial cells than in non-exposed cells. In tissues, the expression of fission (fission mediator protein 1)- and fusion (membrane and mitofusin-1, and optic atrophy protein 1)-related molecules was significantly higher in the NPs of CRSwNP patients than in UT of controls or CRSwNP patients. Transmission electron microscopy revealed elongated mitochondria in SEB-exposed nasal epithelial cells and epithelial cells of NPs. Conclusions Production of mtROS, disrupted mitochondrial function, and structural changes in nasal epithelial cells might be involved in the pathogenesis of CRSwNP.
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Affiliation(s)
- Young Hoon Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon, Korea
| | - Sun Hee Yeon
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon, Korea
| | - Mi Ra Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Yoon Sun Jang
- Department of Biochemistry, Research Institute for Neurosciences, Chungnam National University School of Medicine, Daejeon, Korea
| | - Ji Ae Kim
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Hyun Woo Oh
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Xu Jun
- State Key Laboratory of Respiratory Disease, Department of Otorhinolaryngology-Head and Neck Surgery, First Affiliated Hospital, Guangzhou Medical University, Guanzhou, China
| | - Soo Kyung Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jun Young Heo
- Department of Biochemistry, Research Institute for Neurosciences, Chungnam National University School of Medicine, Daejeon, Korea
| | - Ki Sang Rha
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon, Korea
| | - Yong Min Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea.
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30
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Xu Z, Ding W, Deng X. PM 2.5, Fine Particulate Matter: A Novel Player in the Epithelial-Mesenchymal Transition? Front Physiol 2019; 10:1404. [PMID: 31849690 PMCID: PMC6896848 DOI: 10.3389/fphys.2019.01404] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/31/2019] [Indexed: 12/12/2022] Open
Abstract
Epithelial-mesenchymal transition (EMT) refers to the conversion of epithelial cells to mesenchymal phenotype, which endows the epithelial cells with enhanced migration, invasion, and extracellular matrix production abilities. These characteristics link EMT with the pathogenesis of organ fibrosis and cancer progression. Recent studies have preliminarily established that fine particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5) is correlated with EMT initiation. In this pathological process, PM2.5 particles, excessive reactive oxygen species (ROS) derived from PM2.5, and certain components in PM2.5, such as ions and polyaromatic hydrocarbons (PAHs), have been implicated as potential EMT mediators that are linked to the activation of transforming growth factor β (TGF-β)/SMADs, NF-κB, growth factor (GF)/extracellular signal-regulated protein kinase (ERK), GF/phosphatidylinositol 3-kinase (PI3K)/Akt, wingless/integrated (Wnt)/β-catenin, Notch, Hedgehog, high mobility group box B1 (HMGB1)-receptor for advanced glycation end-products (RAGE), and aryl hydrocarbon receptor (AHR) signaling cascades and to cytoskeleton rearrangement. These pathways directly and indirectly transduce pro-EMT signals that regulate EMT-related gene expression in epithelial cells, finally inducing the characteristic alterations in morphology and functions of epithelia. In addition, novel associations between autophagy, ATP citrate lyase (ACLY), and exosomes with PM2.5-induced EMT have also been summarized. However, some debates and paradoxes remain to be consolidated. This review discusses the potential molecular mechanisms underlying PM2.5-induced EMT, which might account for the latent role of PM2.5 in cancer progression and fibrogenesis.
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Affiliation(s)
- Zihan Xu
- Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenjun Ding
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaobei Deng
- Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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31
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Hyttinen JMT, Kannan R, Felszeghy S, Niittykoski M, Salminen A, Kaarniranta K. The Regulation of NFE2L2 (NRF2) Signalling and Epithelial-to-Mesenchymal Transition in Age-Related Macular Degeneration Pathology. Int J Mol Sci 2019; 20:ijms20225800. [PMID: 31752195 PMCID: PMC6888570 DOI: 10.3390/ijms20225800] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/14/2019] [Accepted: 11/14/2019] [Indexed: 12/19/2022] Open
Abstract
Age-related macular degeneration (AMD) is a mounting cause of loss of sight in the elderly in the developed countries, a trend enhanced by the continual ageing of the population. AMD is a multifactorial and only partly understood, malady. Unfortunately, there is no effective treatment for most AMD patients. It is known that oxidative stress (OS) damages the retinal pigment epithelium (RPE) and contributes to the progression of AMD. We review here the potential importance of two OS-related cellular systems in relation to AMD. First, the nuclear factor erythroid 2-related factor 2 (NFE2L2; NRF2)-mediated OS response signalling pathway is important in the prevention of oxidative damage and a failure of this system could be critical in the development of AMD. Second, epithelial-to-mesenchymal transition (EMT) represents a change in the cellular phenotype, which ultimately leads to the fibrosis encountered in RPE, a characteristic of AMD. Many of the pathways triggering EMT are promoted by OS. The possible interconnections between these two signalling routes are discussed here. From a broader perspective, the control of NFE2L2 and EMT as ways of preventing OS-derived cellular damage could be potentially valuable in the therapy of AMD.
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Affiliation(s)
- Juha M. T. Hyttinen
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland;
- Correspondence:
| | - Ram Kannan
- The Stephen J. Ryan Initiative for Macular Research (RIMR), Doheny Eye Institute, DVRC 203, 1355 San Pablo Street, Los Angeles, CA 90033, USA
| | - Szabolcs Felszeghy
- Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland;
- Institute of Dentistry, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Minna Niittykoski
- A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland;
| | - Antero Salminen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland;
| | - Kai Kaarniranta
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland;
- Department of Ophthalmology, Kuopio University Hospital, P.O. Box 100, 70029 KYS Kuopio, Finland
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32
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Wang Z, Li M, Zhou Q, Shang Y. Protective effects of a neurokinin 1 receptor antagonist on airway epithelial mitochondria dysfunction in asthmatic mice via Nrf2/HO-1 activation. Int Immunopharmacol 2019; 77:105952. [PMID: 31677499 DOI: 10.1016/j.intimp.2019.105952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 09/11/2019] [Accepted: 09/30/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Zhijia Wang
- Department of Paediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Miao Li
- Department of Paediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Qianlan Zhou
- Department of Paediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Yunxiao Shang
- Department of Paediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China.
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33
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Suliman HB, Nozik-Grayck E. Mitochondrial Dysfunction: Metabolic Drivers of Pulmonary Hypertension. Antioxid Redox Signal 2019; 31:843-857. [PMID: 30604624 PMCID: PMC6751393 DOI: 10.1089/ars.2018.7705] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Significance: Pulmonary hypertension (PH) is a progressive disease characterized by pulmonary vascular remodeling and lung vasculopathy. The disease displays progressive dyspnea, pulmonary artery uncoupling and right ventricular (RV) dysfunction. The overall survival rate is ranging from 28-72%. Recent Advances: The molecular events that promote the development of PH are complex and incompletely understood. Metabolic impairment has been proposed to contribute to the pathophysiology of PH with evidence for mitochondrial dysfunction involving the electron transport chain proteins, antioxidant enzymes, apoptosis regulators, and mitochondrial quality control. Critical Issues: It is vital to characterize the mechanisms by which mitochondrial dysfunction contribute to PH pathogenesis. This review focuses on the currently available publications that supports mitochondrial mechanisms in PH pathophysiology. Future Directions: Further studies of these metabolic mitochondrial alterations in PH could be viable targets of diagnostic and therapeutic intervention.
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Affiliation(s)
- Hagir B Suliman
- Department of Anesthesiology, Duke University Medical Centers, Durham, North Carolina
| | - Eva Nozik-Grayck
- Department of Pediatrics, Cardiovascular Pulmonary Research Labs and Pediatric Critical Care Medicine, University of Colorado Denver, Aurora, Colorado
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Kanazashi M, Tanaka M, Nakanishi R, Maeshige N, Fujino H. Effects of astaxanthin supplementation and electrical stimulation on muscle atrophy and decreased oxidative capacity in soleus muscle during hindlimb unloading in rats. J Physiol Sci 2019; 69:757-767. [PMID: 31273678 PMCID: PMC10717927 DOI: 10.1007/s12576-019-00692-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 06/24/2019] [Indexed: 12/15/2022]
Abstract
The effects of a combination of the antioxidant astaxanthin (AX) and electrical stimulation (ES) on muscle mass and mitochondrial oxidative capacity were investigated in the soleus muscle of hindlimb unloaded rats. Five groups of male Sprague-Dawley rats were used; control, 1-week hindlimb unloading (HU), HU + AX, HU + ES, and HU + AX + ES. Respective rats in the AX groups received 50-mg/kg AX twice daily during HU. Calf muscles of rats in the ES groups were electrically stimulated for 240 s/day during HU. One-week HU decreased muscle mass along with decreased FoxO3a phosphorylation and increased ubiquitinated proteins expressions, decreased oxidative enzymatic activity accompanied with decline in PGC-1α protein expression, and increased reactive oxygen species production. However, the combination treatment could synergistically attenuate/suppress all HU-related changes, suggesting protective effects on muscle atrophy and decreased muscle oxidative capacity due to chronic neuromuscular inactivity.
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Affiliation(s)
- Miho Kanazashi
- Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima, 1-1 Gakuen-cho, Mihara-shi, Hiroshima, 723-0053, Japan
| | - Masayuki Tanaka
- Department of Physical Therapy, Faculty of Human Sciences, Osaka University of Human Sciences, 1-4-1 Shojaku, Settsu-shi, Osaka, 566-8501, Japan
| | - Ryosuke Nakanishi
- Department of Physical Therapy, Faculty of Rehabilitation, Kobe International University, 9-1-6 Koyocho-naka, Higashinada-ku, Kobe-shi, Hyogo, 658-0032, Japan
| | - Noriaki Maeshige
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan.
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35
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Wang E, Liu X, Tu W, Do DC, Yu H, Yang L, Zhou Y, Xu D, Huang S, Yang P, Ran P, Gao P, Liu Z. Benzo(a)pyrene facilitates dermatophagoides group 1 (Der f 1)-induced epithelial cytokine release through aryl hydrocarbon receptor in asthma. Allergy 2019; 74:1675-1690. [PMID: 30982974 PMCID: PMC6790621 DOI: 10.1111/all.13784] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 01/24/2019] [Accepted: 02/18/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND Environmental pollutants, which coexist with allergens, have been associated with the exacerbation of asthma. However, the underlying molecular mechanisms remain elusive. We sought to determine whether benzo(a)pyrene (BaP) co-exposure with dermatophagoides group 1 allergen (Der f 1) can potentiate Der f 1-induced asthma and its underlying mechanisms. METHODS The effect of BaP was investigated in Der f 1-induced mouse model of asthma, including airway hyper-responsiveness, allergic inflammation, and epithelial-derived cytokines. The impact of BaP on Der f 1-induced airway epithelial cell oxidative stress (ROS) and cytokine release was further analyzed. The role of aryl hydrocarbon receptor (AhR) signaling in BaP-promoted Der f 1-induced ROS, cytokine production, and allergic inflammation was also investigated. RESULTS Compared with Der f 1, BaP co-exposure with Der f 1 led to airway hyper-responsiveness and increased lung inflammation in mouse model of asthma. Increased expression of TSLP, IL-33, and IL-25 was also found in the airways of these mice. Moreover, BaP co-exposure with Der f 1 activated AhR signaling with increased expression of AhR and CYP1A1 and promoted airway epithelial ROS generation and TSLP and IL-33, but not IL-25, expression. Interestingly, AhR antagonist CH223191 or cells with AhR knockdown abrogated the increased expression of ROS, TSLP, and IL-33. Furthermore, ROS inhibitor N-acetyl-L-cysteine (NAC) also suppressed BaP co-exposure-induced expression of epithelial TSLP, IL-33, and IL-25. Finally, AhR antagonist CH223191 and NAC inhibited BaP co-exposure with Der f 1-induced lung inflammation. CONCLUSIONS Our findings suggest that BaP facilitates Der f 1-induced epithelial cytokine release through the AhR-ROS axis.
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Affiliation(s)
- Eryi Wang
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
| | - Xiaoyu Liu
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
| | - Wei Tu
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
| | - Danh C. Do
- Johns Hopkins Asthma and Allergy CenterJohns Hopkins University School of MedicineBaltimoreMaryland
| | - Haiqiong Yu
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
| | - Liteng Yang
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
| | - Yufeng Zhou
- Key Laboratory of Neonatal Disease, Ministry of Health, Children's Hospital and Institute of Biomedical SciencesFudan UniversityShanghaiChina
| | - Damo Xu
- Institute of Infection, Immunity and InflammationUniversity of GlasgowGlasgowUK
| | - Shau‐Ku Huang
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- Johns Hopkins Asthma and Allergy CenterJohns Hopkins University School of MedicineBaltimoreMaryland
- National Institute of Environmental Health SciencesNational Health Research InstitutesMiaoliTaiwan
| | - Pingchang Yang
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
| | - Pixin Ran
- Guangzhou Institute of Respiratory Disease, State Key Laboratory of Respiratory Diseases, The First Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Pei‐Song Gao
- Johns Hopkins Asthma and Allergy CenterJohns Hopkins University School of MedicineBaltimoreMaryland
| | - Zhigang Liu
- The Affiliated Luohu Hospital of Shenzhen University, Shenzhen Luohu Hospital GroupShenzhenChina
- The State Key Laboratory of Respiratory Disease for Allergy, Shenzhen University School of MedicineShenzhen UniversityShenzhenChina
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36
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Elrashidy RA, Liu G. Long-term diabetes causes molecular alterations related to fibrosis and apoptosis in rat urinary bladder. Exp Mol Pathol 2019; 111:104304. [PMID: 31479659 DOI: 10.1016/j.yexmp.2019.104304] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 07/23/2019] [Accepted: 08/30/2019] [Indexed: 02/05/2023]
Abstract
Diabetes induces time-dependent alterations in urinary bladders. Long-term diabetes causes an underactive bladder. However, the fundamental mechanisms are still elusive. This study aimed to examine the histological changes and the potential molecular pathways affected by long-term diabetes in the rat bladder. Diabetes was induced in 8-week-old male Lewis rats by streptozotocin, while age-matched control rats received citrate buffer only. Forty-four weeks after diabetes induction, bladders were harvested for histological and molecular analyses. The expressions of proteins related to fibrosis, apoptosis and oxidative stress as well as the cellular signaling pathway in the bladder were examined by immunoblotting. Histological examinations illustrated diabetes caused detrusor hypertrophy and fibrotic changes in the bladder. Immunoblotting analysis demonstrated higher collagen I but lower elastin expression in the bladder in diabetic rats. These were accompanied by an increase in the expression of transforming growth factor-beta1, along with the downregulation of matrix metalloptoteinase-1, and upregulation of tissue inhibitor of metalloproteinase-1. Diabetic rats showed an increase in nitrotyrosine, but decrease in nuclear factor erythroid-related factor 2 (Nrf2) levels in the bladder. Enhanced apoptotic signaling was observed, characterized by increased expression of Bcl-2-associated X protein (Bax), decreased expression of Bcl-2, in the diabetic bladder. The nerve growth factor level was decreased in the diabetic bladder. A significant suppression in the protein expressions of phosphorylated extracellular signal-regulated kinases 1/2 was found in diabetic bladders. This study demonstrated that long-term diabetes caused molecular changes that could promote fibrosis and apoptosis in the bladder. Oxidative stress may be involved in this context.
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Affiliation(s)
- Rania A Elrashidy
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA; Department of Biochemistry, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Guiming Liu
- Department of Surgery, MetroHealth Medical Center, Case Western Reserve University, Cleveland, OH, USA.
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37
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Qu J, Mei Q, Niu R. Oxidative CaMKII as a potential target for inflammatory disease (Review). Mol Med Rep 2019; 20:863-870. [PMID: 31173191 DOI: 10.3892/mmr.2019.10309] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 05/22/2019] [Indexed: 11/06/2022] Open
Abstract
CaMKII is a calcium‑activated kinase, proved to be modulated by oxidation. Currently, the oxidative activation of CaMKII exists in several models of asthma, chronic rhinosinusitis with nasal polyps, cardiovascular disease, diabetes mellitus, acute ischemic stroke and cancer. Oxidized CaMKII (ox‑CaMKII) may be important in several of these diseases. The present review examines the mechanism underlying the oxidative activation of CaMKII and summarizes the current findings associated with the function of ox‑CaMKII in inflammatory diseases. Taken together, the findings of this review aim to improve current understanding of the function of ox‑CaMKII and provide novel insights for future research.
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Affiliation(s)
- Jingjing Qu
- Department of Lung Cancer and Gastroenterology, Hunan Cancer Hospital, Affiliated Tumor Hospital of Xiangya Medical School of Central South University, Changsha, Hunan 410008, P.R. China
| | - Quanhui Mei
- Department of Intensive Care Unit, The First People's Hospital of Changde City, Changde, Hunan 410005, P.R. China
| | - Ruichao Niu
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
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38
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Dennis KK, Go YM, Jones DP. Redox Systems Biology of Nutrition and Oxidative Stress. J Nutr 2019; 149:553-565. [PMID: 30949678 PMCID: PMC6461723 DOI: 10.1093/jn/nxy306] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 10/30/2018] [Accepted: 11/19/2018] [Indexed: 02/07/2023] Open
Abstract
Diet and nutrition contribute to both beneficial and harmful aspects of oxidative processes. The harmful processes, termed oxidative stress, occur with many human diseases. Major advances in understanding oxidative stress and nutrition have occurred with broad characterization of dietary oxidants and antioxidants, and with mechanistic studies showing antioxidant efficacy. However, randomized controlled trials in humans with free-radical-scavenging antioxidants and the glutathione precursor N-acetylcysteine have provided limited or inconsistent evidence for health benefits. This, combined with emerging redox theory, indicates that holistic models are needed to understand the interplay of nutrition and oxidative stress. The purpose of this article is to highlight how recent advances in redox theory and the development of new omics tools and data-driven approaches provide a framework for future nutrition and oxidative stress research. Here we describe why a holistic approach is needed to understand the impact of nutrition on oxidative stress and how recent advances in omics and data analysis methods are viable tools for systems nutrition approaches. Based on the extensive research on glutathione and related thiol antioxidant systems, we summarize the advancing framework for diet and oxidative stress in which antioxidant systems are a component of a larger redox network that serves as a responsive interface between the environment and an individual. The feasibility for redox network analysis has been established by experimental models in which dietary factors are systematically varied and oxidative stress markers are linked through integrated omics (metabolome, transcriptome, proteome). With this framework, integrated redox network models will support optimization of diet to protect against oxidative stress and disease.
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Affiliation(s)
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
| | - Dean P Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, GA
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39
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Pan S, Conaway S, Deshpande DA. Mitochondrial regulation of airway smooth muscle functions in health and pulmonary diseases. Arch Biochem Biophys 2019; 663:109-119. [PMID: 30629957 DOI: 10.1016/j.abb.2019.01.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/28/2018] [Accepted: 01/04/2019] [Indexed: 12/24/2022]
Abstract
Mitochondria are important for airway smooth muscle physiology due to their diverse yet interconnected roles in calcium handling, redox regulation, and cellular bioenergetics. Increasing evidence indicates that mitochondria dysfunction is intimately associated with airway diseases such as asthma, IPF and COPD. In these pathological conditions, increased mitochondrial ROS, altered bioenergetics profiles, and calcium mishandling contribute collectively to changes in cellular signaling, gene expression, and ultimately changes in airway smooth muscle contractile/proliferative properties. Therefore, understanding the basic features of airway smooth muscle mitochondria and their functional contribution to airway biology and pathology are key to developing novel therapeutics for airway diseases. This review summarizes the recent findings of airway smooth muscle mitochondria focusing on calcium homeostasis and redox regulation, two key determinants of physiological and pathological functions of airway smooth muscle.
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Affiliation(s)
- Shi Pan
- Center for Translational Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Stanley Conaway
- Center for Translational Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Deepak A Deshpande
- Center for Translational Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
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40
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Yao Y, Fan XL, Jiang D, Zhang Y, Li X, Xu ZB, Fang SB, Chiu S, Tse HF, Lian Q, Fu QL. Connexin 43-Mediated Mitochondrial Transfer of iPSC-MSCs Alleviates Asthma Inflammation. Stem Cell Reports 2018; 11:1120-1135. [PMID: 30344008 PMCID: PMC6234920 DOI: 10.1016/j.stemcr.2018.09.012] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 09/23/2018] [Accepted: 09/24/2018] [Indexed: 01/20/2023] Open
Abstract
We previously identified an immunomodulatory role of human induced pluripotent stem cell (iPSC)-derived mesenchymal stem cells (MSCs) in asthmatic inflammation. Mitochondrial transfer from bone marrow MSCs to epithelial cells can result in the attenuation of acute lung injury in mice. However, the effects of mitochondrial transfer from iPSC-MSCs to epithelial cells in asthma and the mechanisms underlying these effects are unclear. We found that iPSC-MSC transplantation significantly reduced T helper 2 cytokines, attenuated the mitochondrial dysfunction of epithelial cells, and alleviated asthma inflammation in mice. Tunneling nanotubes (TNTs) were formed between iPSC-MSCs and epithelial cells, and mitochondrial transfer from iPSC-MSCs to epithelial cells via TNTs was observed both in vitro and in mice. Overexpression or silencing of connexin 43 (CX43) in iPSC-MSCs demonstrated that CX43 plays a critical role in the regulation of TNT formation by mediating mitochondrial transfer between iPSC-MSCs and epithelial cells. This study provides a therapeutic strategy for targeting asthma inflammation.
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Affiliation(s)
- Yin Yao
- Otorhinolaryngology Hospital, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou 510080, P. R. China
| | - Xing-Liang Fan
- Otorhinolaryngology Hospital, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou 510080, P. R. China
| | - Dan Jiang
- Department of Medicine, The University of Hong Kong, Hong Kong SAR, P. R. China; Stem Cell and Regenerative Medicine Consortium, The University of Hong Kong, Hong Kong SAR, P. R. China
| | - Yuelin Zhang
- Department of Emergency, Guangdong General Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Road II, Guangzhou 510080, P. R. China
| | - Xin Li
- Department of Emergency, Guangdong General Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan Road II, Guangzhou 510080, P. R. China
| | - Zhi-Bin Xu
- Otorhinolaryngology Hospital, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou 510080, P. R. China
| | - Shu-Bin Fang
- Otorhinolaryngology Hospital, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou 510080, P. R. China
| | - Sinming Chiu
- Department of Medicine, The University of Hong Kong, Hong Kong SAR, P. R. China; Stem Cell and Regenerative Medicine Consortium, The University of Hong Kong, Hong Kong SAR, P. R. China
| | - Hung-Fat Tse
- Department of Medicine, The University of Hong Kong, Hong Kong SAR, P. R. China
| | - Qizhou Lian
- Department of Medicine, The University of Hong Kong, Hong Kong SAR, P. R. China; Stem Cell and Regenerative Medicine Consortium, The University of Hong Kong, Hong Kong SAR, P. R. China.
| | - Qing-Ling Fu
- Otorhinolaryngology Hospital, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan Road II, Guangzhou 510080, P. R. China.
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41
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Schuliga M, Pechkovsky DV, Read J, Waters DW, Blokland KEC, Reid AT, Hogaboam CM, Khalil N, Burgess JK, Prêle CM, Mutsaers SE, Jaffar J, Westall G, Grainge C, Knight DA. Mitochondrial dysfunction contributes to the senescent phenotype of IPF lung fibroblasts. J Cell Mol Med 2018; 22:5847-5861. [PMID: 30255990 PMCID: PMC6237609 DOI: 10.1111/jcmm.13855] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/24/2018] [Indexed: 12/22/2022] Open
Abstract
Increasing evidence highlights that senescence plays an important role in idiopathic pulmonary fibrosis (IPF). This study delineates the specific contribution of mitochondria and the superoxide they form to the senescent phenotype of lung fibroblasts from IPF patients (IPF‐LFs). Primary cultures of IPF‐LFs exhibited an intensified DNA damage response (DDR) and were more senescent than age‐matched fibroblasts from control donors (Ctrl‐LFs). Furthermore, IPF‐LFs exhibited mitochondrial dysfunction, exemplified by increases in mitochondrial superoxide, DNA, stress and activation of mTORC1. The DNA damaging agent etoposide elicited a DDR and augmented senescence in Ctrl‐LFs, which were accompanied by disturbances in mitochondrial homoeostasis including heightened superoxide production. However, etoposide had no effect on IPF‐LFs. Mitochondrial perturbation by rotenone involving sharp increases in superoxide production also evoked a DDR and senescence in Ctrl‐LFs, but not IPF‐LFs. Inhibition of mTORC1, antioxidant treatment and a mitochondrial targeting antioxidant decelerated IPF‐LF senescence and/or attenuated pharmacologically induced Ctrl‐LF senescence. In conclusion, increased superoxide production by dysfunctional mitochondria reinforces lung fibroblast senescence via prolongation of the DDR. As part of an auto‐amplifying loop, mTORC1 is activated, altering mitochondrial homoeostasis and increasing superoxide production. Deeper understanding the mechanisms by which mitochondria contribute to fibroblast senescence in IPF has potentially important therapeutic implications.
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Affiliation(s)
- Michael Schuliga
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Dmitri V Pechkovsky
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia (UBC), Vancouver, British Columbia, Canada
| | - Jane Read
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - David W Waters
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Kaj E C Blokland
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen Research Institute of Asthma and COPD and KOLFF Institute, Groningen, Netherlands
| | - Andrew T Reid
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Cory M Hogaboam
- Department of Medicine, Cedars-Sinai, Los Angeles, California
| | - Nasreen Khalil
- Department of Respiratory Medicine, UBC, Vancouver, British Columbia, Canada
| | - Janette K Burgess
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen Research Institute of Asthma and COPD and KOLFF Institute, Groningen, Netherlands
| | - Cecilia M Prêle
- Institute for Respiratory Health, University of Western Australia, Nedlands, Western Australia, Australia.,Centre for Cell Therapy and Regenerative Medicine, School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia, Australia
| | - Steven E Mutsaers
- Institute for Respiratory Health, University of Western Australia, Nedlands, Western Australia, Australia.,Centre for Cell Therapy and Regenerative Medicine, School of Biomedical Sciences, University of Western Australia, Crawley, Western Australia, Australia
| | - Jade Jaffar
- Allergy, Immunology and Respiratory Medicine, Alfred Hospital, Prahran, Victoria, Australia
| | - Glen Westall
- Allergy, Immunology and Respiratory Medicine, Alfred Hospital, Prahran, Victoria, Australia
| | - Christopher Grainge
- Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,School of Medicine and Public Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Darryl A Knight
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.,Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia (UBC), Vancouver, British Columbia, Canada
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42
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Oxidative stress in chronic lung disease: From mitochondrial dysfunction to dysregulated redox signaling. Mol Aspects Med 2018; 63:59-69. [PMID: 30098327 DOI: 10.1016/j.mam.2018.08.001] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/02/2018] [Accepted: 08/07/2018] [Indexed: 12/31/2022]
Abstract
The lung is a delicate organ with a large surface area that is continuously exposed to the external environment, and is therefore highly vulnerable to exogenous sources of oxidative stress. In addition, each of its approximately 40 cell types can also generate reactive oxygen species (ROS), as byproducts of cellular metabolism and in a more regulated manner by NOX enzymes with functions in host defense, immune regulation, and cell proliferation or differentiation. To effectively regulate the biological actions of exogenous and endogenous ROS, various enzymatic and non-enzymatic antioxidant defense systems are present in all lung cell types to provide adequate protection against their injurious effects and to allow for appropriate ROS-mediated biological signaling. Acute and chronic lung diseases are commonly thought to be associated with increased oxidative stress, evidenced by altered cellular or extracellular redox status, increased irreversible oxidative modifications in proteins or DNA, mitochondrial dysfunction, and altered expression or activity of NOX enzymes and antioxidant enzyme systems. However, supplementation strategies with generic antioxidants have been minimally successful in prevention or treatment of lung disease, most likely due to their inability to distinguish between harmful and beneficial actions of ROS. Recent studies have attempted to identify specific redox-based mechanisms that may mediate chronic lung disease, such as allergic asthma or pulmonary fibrosis, which provide opportunities for selective redox-based therapeutic strategies that may be useful in treatment of these diseases.
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43
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Paeonol Ameliorates Ovalbumin-Induced Asthma through the Inhibition of TLR4/NF- κB and MAPK Signaling. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:3063145. [PMID: 30186353 PMCID: PMC6114069 DOI: 10.1155/2018/3063145] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 10/18/2017] [Indexed: 01/20/2023]
Abstract
Asthma is a chronic inflammatory disease of the airways, with complex signaling pathways involved in its pathogenesis. It was reported that paeonol attenuated airway inflammation of ovalbumin (OVA)-induced mice. Therefore, it is of importance to further investigate the underlying mechanism. BALB/c mice were challenged with OVA for the asthma model, which was validated by the changed levels of IL-4, IFN-γ, and IgE. The elevation of IL-4 and the decreasing of IFN-γ were significantly in middle (p<0.05) or high (p<0.01) paeonol dose groups compared with OVA group. MIP-1β in bronchoalveolar lavage fluid (BALF) also decreased significantly in middle and high paeonol group compared with OVA group (p<0.01), which is similar to the change of its mRNA in lung tissues. Moreover, the inflammatory cells infiltration and collagen deposition were attenuated by paeonol and montelukast sodium via histology examination. At last the immune blot of the protein extracted from lung tissues demonstrated that paeonol decreased the expression of TLR4 and the nuclear translocation of NF-κB, as well as the phosphorylation levels of P38 and ERK in asthma model. In conclusion, paeonol ameliorated OVA-induced asthma through the TLR4/NF-κB and mitogen-activated protein kinase (MAPK) signaling.
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44
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Pires ADO, Queiroz GDA, de Jesus Silva M, da Silva RR, da Silva HBF, Carneiro NVQ, Fonseca HF, de Santana MBR, Nascimento RS, Alcântara-Neves NM, Costa GNDO, Costa RDS, Barreto ML, Figueiredo CA. Polymorphisms in the DAD1 and OXA1L genes are associated with asthma and atopy in a South American population. Mol Immunol 2018; 101:294-302. [PMID: 30032071 DOI: 10.1016/j.molimm.2018.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/03/2018] [Accepted: 07/07/2018] [Indexed: 12/13/2022]
Abstract
Atopic asthma, which is characterized by the chronic inflammation and morbidity of airways, is a disease of great complexity, and multiple genetic and environmental factors are involved in its etiology. In the first genome-wide association study (GWAS) conducted in Brazil for asthma, a positive association was found between atopic asthma and a variant (rs1999071), which is located between the DAD1 and OXA1L genes, although neither gene has previously been reported to be associated with asthma or allergies. The DAD1 gene is involved in the regulation of programmed cell death, and OXA1L is involved in biogenesis and mitochondrial oxidative phosphorylation. This study aimed to evaluate how polymorphisms in DAD1 and OXA1L are associated with asthma and markers of atopy in individuals from the Salvador cohort of the SCAALA (Social Change Asthma and Allergy in Latin America) program. The DNA of 1220 individuals was genotyped using the Illumina 2.5 Human Omni Bead chip. Logistic regression analyses were performed with PLINK 1.9 software to verify the association between DAD1 and OXA1L polymorphisms and asthma and atopic markers, adjusted for sex, age, helminth infections and ancestry markers, using an additive model. The DAD1 and OXA1L genes were associated with some of the evaluated phenotypes, such as asthma, skin prick test (SPT), specific IgE for aeroallergens, and Th1/Th2-type cytokine production. Using qPCR, as well as in silico gene expression analysis, we have demonstrated that some of the polymorphisms in both genes are able to affect their respective gene expression levels. In addition, DAD1 was over-expressed in asthmatic patients when compared with controls. Thus, our findings demonstrate that variants in both the DAD1 and OXA1L genes may affect atopy and asthma in a Latin American population with a high prevalence of asthma.
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Affiliation(s)
- Anaque de Oliveira Pires
- Laboratory of Immunopharmacology and Molecular Biology, Federal University of Bahia, Salvador, Brazil
| | - Gerson de Almeida Queiroz
- Laboratory of Immunopharmacology and Molecular Biology, Federal University of Bahia, Salvador, Brazil
| | - Milca de Jesus Silva
- Laboratory of Immunopharmacology and Molecular Biology, Federal University of Bahia, Salvador, Brazil
| | - Raimon Rios da Silva
- Laboratory of Immunopharmacology and Molecular Biology, Federal University of Bahia, Salvador, Brazil
| | | | | | - Héllen Freitas Fonseca
- Laboratory of Immunopharmacology and Molecular Biology, Federal University of Bahia, Salvador, Brazil
| | | | - Regina Santos Nascimento
- Laboratory of Immunopharmacology and Molecular Biology, Federal University of Bahia, Salvador, Brazil
| | | | | | - Ryan Dos Santos Costa
- Laboratory of Immunopharmacology and Molecular Biology, Federal University of Bahia, Salvador, Brazil
| | - Maurício L Barreto
- Gonçalo Moniz Research Center, Oswaldo Cruz Foundation, Salvador, Brazil
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45
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Qiu L, Zhang Y, Do DC, Ke X, Zhang S, Lambert K, Kumar S, Hu C, Zhou Y, Ishmael FT, Gao P. miR-155 Modulates Cockroach Allergen- and Oxidative Stress-Induced Cyclooxygenase-2 in Asthma. THE JOURNAL OF IMMUNOLOGY 2018; 201:916-929. [PMID: 29967100 DOI: 10.4049/jimmunol.1701167] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 06/01/2018] [Indexed: 12/13/2022]
Abstract
Exposure to cockroach allergen is a strong risk factor for developing asthma. Asthma has been associated with allergen-induced airway epithelial damage and heightened oxidant stress. In this study, we investigated cockroach allergen-induced oxidative stress in airway epithelium and its underlying mechanisms. We found that cockroach extract (CRE) could induce reactive oxygen species (ROS) production, particularly mitochondrial-derived ROS, in human bronchial epithelial cells. We then used the RT2 Profiler PCR array and identified that cyclooxygenase-2 (COX-2) was the most significantly upregulated gene related to CRE-induced oxidative stress. miR-155, predicted to target COX-2, was increased in CRE-treated human bronchial epithelial cells, and was showed to regulate COX-2 expression. Moreover, miR-155 can bind COX-2, induce COX-2 reporter activity, and maintain mRNA stability. Furthermore, CRE-treated miR-155-/- mice showed reduced levels of ROS and COX-2 expression in lung tissues and PGE2 in bronchoalveolar lavage fluid compared with wild-type mice. These miR-155-/- mice also showed reduced lung inflammation and Th2/Th17 cytokines. In contrast, when miR-155-/- mice were transfected with adeno-associated virus carrying miR-155, the phenotypic changes in CRE-treated miR-155-/- mice were remarkably reversed, including ROS, COX-2 expression, lung inflammation, and Th2/Th17 cytokines. Importantly, plasma miR-155 levels were elevated in severe asthmatics when compared with nonasthmatics or mild-to-moderate asthmatics. These increased plasma miR-155 levels were also observed in asthmatics with cockroach allergy compared with those without cockroach allergy. Collectively, these findings suggest that COX-2 is a major gene related to cockroach allergen-induced oxidative stress and highlight a novel role of miR-155 in regulating the ROS-COX-2 axis in asthma.
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Affiliation(s)
- Lipeng Qiu
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224.,Institute of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Yan Zhang
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224.,Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Danh C Do
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224
| | - Xia Ke
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224
| | - Simin Zhang
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Pennsylvania State University Milton S. Hershey Medical Center, Hershey, PA 17033; and
| | - Kristin Lambert
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Pennsylvania State University Milton S. Hershey Medical Center, Hershey, PA 17033; and
| | - Shruthi Kumar
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224
| | - Chengping Hu
- Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yufeng Zhou
- Children's Hospital and Institute of Biomedical Sciences, Fudan University, Key Laboratory of Neonatal Diseases, Ministry of Health, Shanghai 201102, China
| | - Faoud T Ishmael
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Pennsylvania State University Milton S. Hershey Medical Center, Hershey, PA 17033; and
| | - Peisong Gao
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224;
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46
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Sebag SC, Koval OM, Paschke JD, Winters CJ, Comellas AP, Grumbach IM. Inhibition of the mitochondrial calcium uniporter prevents IL-13 and allergen-mediated airway epithelial apoptosis and loss of barrier function. Exp Cell Res 2017; 362:400-411. [PMID: 29225050 DOI: 10.1016/j.yexcr.2017.12.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 11/12/2017] [Accepted: 12/06/2017] [Indexed: 01/13/2023]
Abstract
Mitochondria are increasingly recognized as key mediators of acute cellular stress responses in asthma. However, the distinct roles of regulators of mitochondrial physiology on allergic asthma phenotypes are currently unknown. The mitochondrial Ca2+ uniporter (MCU) resides in the inner mitochondrial membrane and controls mitochondrial Ca2+ uptake into the mitochondrial matrix. To understand the function of MCU in models of allergic asthma, in vitro and in vivo studies were performed using models of functional deficiency or knockout of MCU. In primary human respiratory epithelial cells, MCU inhibition abrogated mitochondrial Ca2+ uptake and reactive oxygen species (ROS) production, preserved the mitochondrial membrane potential and protected from apoptosis in response to the pleiotropic Th2 cytokine IL-13. Consequently, epithelial barrier function was maintained with MCU inhibition. Similarly, the endothelial barrier was preserved in respiratory epithelium isolated from MCU-/- mice after exposure to IL-13. In the ovalbumin-model of allergic airway disease, MCU deficiency resulted in decreased apoptosis within the large airway epithelial cells. Concordantly, expression of the tight junction protein ZO-1 was preserved, indicative of maintenance of epithelial barrier function. These data implicate mitochondrial Ca2+ uptake through MCU as a key controller of epithelial cell viability in acute allergic asthma.
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Affiliation(s)
- Sara C Sebag
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Olha M Koval
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA; Veterans Affairs Healthcare System, Iowa City, IA, USA
| | - John D Paschke
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Christopher J Winters
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Alejandro P Comellas
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA; Veterans Affairs Healthcare System, Iowa City, IA, USA
| | - Isabella M Grumbach
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA, USA; Veterans Affairs Healthcare System, Iowa City, IA, USA.
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47
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Bullone M, Lavoie JP. The Contribution of Oxidative Stress and Inflamm-Aging in Human and Equine Asthma. Int J Mol Sci 2017; 18:ijms18122612. [PMID: 29206130 PMCID: PMC5751215 DOI: 10.3390/ijms18122612] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 11/27/2017] [Accepted: 11/29/2017] [Indexed: 02/07/2023] Open
Abstract
Aging is associated with a dysregulation of the immune system, leading to a general pro-inflammatory state of the organism, a process that has been named inflamm-aging. Oxidative stress has an important role in aging and in the regulation of immune responses, probably playing a role in the development of age-related diseases. The respiratory system function physiologically declines with the advancement of age. In elderly asthmatic patients, this may contribute to disease expression. In this review, we will focus on age-related changes affecting the immune system and in respiratory structure and function that could contribute to asthma occurrence, and/or clinical presentation in the elderly. Also, naturally occurring equine asthma will be discussed as a possible model for studying the importance of oxidative stress and immun-aging/inflamm-aging in humans.
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Affiliation(s)
- Michela Bullone
- Department of Clinical and Biological Sciences, University of Turin, AUO San Luigi Gonzaga, Regione Gonzole 10, 10043 Orbassano, Italy.
| | - Jean-Pierre Lavoie
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Université de Montréal, 3200 Rue Sicotte, St-Hyacinthe, QC J2S 2M2, Canada.
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48
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Gonzalez-Gonzalez FJ, Chandel NS, Jain M, Budinger GRS. Reactive oxygen species as signaling molecules in the development of lung fibrosis. Transl Res 2017; 190:61-68. [PMID: 29080401 PMCID: PMC5730357 DOI: 10.1016/j.trsl.2017.09.005] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/10/2017] [Accepted: 09/28/2017] [Indexed: 12/15/2022]
Abstract
Pulmonary fibrosis is a relatively rare but devastating disease characterized by the excessive deposition of extracellular matrix. The increased matrix results in reduced lung compliance and increased work of breathing, while the obliteration of alveolar-capillary structures can result in hypoxemia and pulmonary hypertension, which manifests clinically as worsening shortness of breath, respiratory failure, and death. Unbiased genome-wide association studies combined with animal models suggest that damage to the alveolar epithelium is the initiating factor in pulmonary fibrosis. This epithelial injury leads to the activation and proliferation of myofibroblasts that secrete extracellular matrix proteins characteristic of fibrosis. The best described molecular link between alveolar epithelial dysfunction and myofibroblast activation and proliferation is the profibrotic cytokine transforming growth factor-β (TGF-β). We and others have found that mitochondrial and NAD(P)H oxidase-generated reactive oxygen species (ROS) play a signaling role to enhance TGF-β signaling and promote fibrosis. The purpose of this article is to review how ROS signaling leads to the activation of TGF-β. We suggest that an improved understanding of these pathways might explain the failure of nonselective antioxidants to improve outcomes in patients with pulmonary fibrosis and might identify novel targets for therapy.
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Affiliation(s)
- Francisco J Gonzalez-Gonzalez
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Ill
| | - Navdeep S Chandel
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Ill
| | - Manu Jain
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Ill
| | - G R Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Ill.
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49
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TSPO PET Imaging: From Microglial Activation to Peripheral Sterile Inflammatory Diseases? CONTRAST MEDIA & MOLECULAR IMAGING 2017; 2017:6592139. [PMID: 29114179 PMCID: PMC5632884 DOI: 10.1155/2017/6592139] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 08/01/2017] [Accepted: 08/07/2017] [Indexed: 02/07/2023]
Abstract
Peripheral sterile inflammatory diseases (PSIDs) are a heterogeneous group of disorders that gathers several chronic insults involving the cardiovascular, respiratory, gastrointestinal, or musculoskeletal system and wherein inflammation is the cornerstone of the pathophysiology. In PSID, timely characterization and localization of inflammatory foci are crucial for an adequate care for patients. In brain diseases, in vivo positron emission tomography (PET) exploration of inflammation has matured over the last 20 years, through the development of radiopharmaceuticals targeting the translocator protein-18 kDa (TSPO) as molecular biomarkers of activated microglia. Recently, TSPO has been introduced as a possible molecular target for PSIDs PET imaging, making this protein a potential biomarker to address disease heterogeneity, to assist in patient stratification, and to contribute to predicting treatment response. In this review, we summarized the major research advances recently made in the field of TSPO PET imaging in PSIDs. Promising preliminary results have been reported in bowel, cardiovascular, and rheumatic inflammatory diseases, consolidated by preclinical studies. Limitations of TSPO PET imaging in PSIDs, regarding both its large expression in healthy peripheral tissues, unlike in central nervous system, and the production of peripheral radiolabeled metabolites, are also discussed, regarding their possible consequences on TSPO PET signal's quantification.
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50
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Maezawa T, Tanaka M, Kanazashi M, Maeshige N, Kondo H, Ishihara A, Fujino H. Astaxanthin supplementation attenuates immobilization-induced skeletal muscle fibrosis via suppression of oxidative stress. J Physiol Sci 2017; 67:603-611. [PMID: 27714500 PMCID: PMC10718026 DOI: 10.1007/s12576-016-0492-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 09/21/2016] [Indexed: 12/14/2022]
Abstract
Immobilization induces skeletal muscle fibrosis characterized by increasing collagen synthesis in the perimysium and endomysium. Transforming growth factor-β1 (TGF-β1) is associated with this lesion via promoting differentiation of fibroblasts into myofibroblasts. In addition, reactive oxygen species (ROS) are shown to mediate TGF-β1-induced fibrosis in tissues. These reports suggest the importance of ROS reduction for attenuating skeletal muscle fibrosis. Astaxanthin, a powerful antioxidant, has been shown to reduce ROS production in disused muscle. Therefore, we investigated the effects of astaxanthin supplementation on muscle fibrosis under immobilization. In the present study, immobilization increased the collagen fiber area, the expression levels of TGF-β1, α-smooth muscle actin, and superoxide dismutase-1 protein and ROS production. However, these changes induced by immobilization were attenuated by astaxanthin supplementation. These results indicate the effectiveness of astaxanthin supplementation on skeletal muscle fibrosis induced by ankle joint immobilization.
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Affiliation(s)
- Toshiyuki Maezawa
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan
| | - Masayuki Tanaka
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan
- Department of Physical Therapy, Faculty of Human Sciences, Osaka University of Human Sciences, 1-4-1 Shojaku, Settsu-shi, Osaka, 566-8501, Japan
| | - Miho Kanazashi
- Department of Physical Therapy, Faculty of Health and Welfare, Prefectural University of Hiroshima, 1-1 Gakuen-cho, Mihara-shi, Hiroshima, 723-0053, Japan
| | - Noriaki Maeshige
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan
| | - Hiroyo Kondo
- Department of Food Science and Nutrition, Nagoya Women's University, Nagoya, 4-21 Shioji-cho, Mizuho-ku, Nagoya-shi, Aichi, 467-8611, Japan
| | - Akihiko Ishihara
- Laboratory of Cell Biology and Life Science, Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-nihonmatsu-cho, Sakyo-ku, Kyoto-shi, Kyoto, 606-8501, Japan
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan.
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