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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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2
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Jairaman A, Prakriya M. Calcium Signaling in Airway Epithelial Cells: Current Understanding and Implications for Inflammatory Airway Disease. Arterioscler Thromb Vasc Biol 2024; 44:772-783. [PMID: 38385293 PMCID: PMC11090472 DOI: 10.1161/atvbaha.123.318339] [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] [Indexed: 02/23/2024]
Abstract
Airway epithelial cells play an indispensable role in protecting the lung from inhaled pathogens and allergens by releasing an array of mediators that orchestrate inflammatory and immune responses when confronted with harmful environmental triggers. While this process is undoubtedly important for containing the effects of various harmful insults, dysregulation of the inflammatory response can cause lung diseases including asthma, chronic obstructive pulmonary disease, and pulmonary fibrosis. A key cellular mechanism that underlies the inflammatory responses in the airway is calcium signaling, which stimulates the production and release of chemokines, cytokines, and prostaglandins from the airway epithelium. In this review, we discuss the role of major Ca2+ signaling pathways found in airway epithelial cells and their contributions to airway inflammation, mucociliary clearance, and surfactant production. We highlight the importance of store-operated Ca2+ entry as a major signaling hub in these processes and discuss therapeutic implications of targeting Ca2+ signaling for airway inflammation.
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Affiliation(s)
- Amit Jairaman
- Department of Physiology and Biophysics, School of Medicine, University of California-Irvine (UCI) (A.J.)
| | - Murali Prakriya
- Department of Pharmacology, Northwestern University Feinberg School of Medicine, Chicago, IL (M.P.)
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3
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Pain P, Spinelli F, Gherardi G. Mitochondrial Cation Signalling in the Control of Inflammatory Processes. Int J Mol Sci 2023; 24:16724. [PMID: 38069047 PMCID: PMC10706693 DOI: 10.3390/ijms242316724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/17/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023] Open
Abstract
Mitochondria are the bioenergetic organelles responsible for the maintenance of cellular homeostasis and have also been found to be associated with inflammation. They are necessary to induce and maintain innate and adaptive immune cell responses, acting as signalling platforms and mediators in effector responses. These organelles are also known to play a pivotal role in cation homeostasis as well, which regulates the inflammatory responses through the modulation of these cation channels. In particular, this review focuses on mitochondrial Ca2+ and K+ fluxes in the regulation of inflammatory response. Nevertheless, this review aims to understand the interplay of these inflammation inducers and pathophysiological conditions. In detail, we discuss some examples of chronic inflammation such as lung, bowel, and metabolic inflammatory diseases caused by a persistent activation of the innate immune response due to a dysregulation of mitochondrial cation homeostasis.
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Affiliation(s)
| | | | - Gaia Gherardi
- Department of Biomedical Sciences, University of Padova, 35131 Padova, Italy; (P.P.); (F.S.)
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4
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Wang Y, Wang J, Yan Z, Liu S, Xu W. Microenvironment modulation by key regulators of RNA N6-methyladenosine modification in respiratory allergic diseases. BMC Pulm Med 2023; 23:210. [PMID: 37328853 DOI: 10.1186/s12890-023-02499-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 05/30/2023] [Indexed: 06/18/2023] Open
Abstract
BACKGROUND RNA N6-methyladenosine (m6A) regulators are considered post-transcriptional regulators that affect several biological functions, and their role in immunity, in particular, is emerging. However, the role of m6A regulators in respiratory allergic diseases remains unclear. Therefore, we aimed to investigate the role of key m6A regulators in mediating respiratory allergic diseases and immune microenvironment infiltration characteristics. METHODS We downloaded gene expression profiles of respiratory allergies from the Gene Expression Omnibus (GEO) database and we performed hierarchical clustering, difference analysis, and construction of predictive models to identify hub m6A regulators that affect respiratory allergies. Next, we investigate the underlying biological mechanisms of key m6A regulators by performing PPI network analysis, functional enrichment analysis, and immune microenvironment infiltration analysis. In addition, we performed a drug sensitivity analysis on the key m6A regulator, hoping to be able to provide some implications for clinical medication. RESULTS In this study, we identified four hub m6A regulators that affect the respiratory allergy and investigated the underlying biological mechanisms. In addition, studies on the characteristics of immune microenvironment infiltration revealed that the expression of METTL14, METTL16, and RBM15B correlated with the infiltration of the mast and Th2 cells in respiratory allergy, and METTL16 expression was found to be significantly negatively correlated with macrophages for the first time (R = -0.53, P < 0.01). Finally, a key m6A regulator, METTL14, was screened by combining multiple algorithms. In addition, by performing a drug sensitivity analysis on METTL14, we hypothesized that it may play an important role in the improvement of allergic symptoms in the upper and lower airways with topical nasal glucocorticoids. CONCLUSIONS Our findings suggest that m6A regulators, particularly METTL14, play a crucial role in the development of respiratory allergic diseases and the infiltration of immune cells. These results may provide insight into the mechanism of action of methylprednisolone in treating respiratory allergic diseases.
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Affiliation(s)
- Yuting Wang
- Department of Otorhinolaryngology, Dongfang Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Jiaxi Wang
- Department of Otorhinolaryngology, Dongfang Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China.
| | - Zhanfeng Yan
- Department of Otorhinolaryngology, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Siming Liu
- Department of Otorhinolaryngology, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Wenlong Xu
- Department of Otorhinolaryngology, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
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5
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Seegren PV, Harper LR, Downs TK, Zhao XY, Viswanathan SB, Stremska ME, Olson RJ, Kennedy J, Ewald SE, Kumar P, Desai BN. Reduced mitochondrial calcium uptake in macrophages is a major driver of inflammaging. NATURE AGING 2023:10.1038/s43587-023-00436-8. [PMID: 37277641 DOI: 10.1038/s43587-023-00436-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/09/2023] [Indexed: 06/07/2023]
Abstract
Mitochondrial dysfunction is linked to age-associated inflammation or inflammaging, but underlying mechanisms are not understood. Analyses of 700 human blood transcriptomes revealed clear signs of age-associated low-grade inflammation. Among changes in mitochondrial components, we found that the expression of mitochondrial calcium uniporter (MCU) and its regulatory subunit MICU1, genes central to mitochondrial Ca2+ (mCa2+) signaling, correlated inversely with age. Indeed, mCa2+ uptake capacity of mouse macrophages decreased significantly with age. We show that in both human and mouse macrophages, reduced mCa2+ uptake amplifies cytosolic Ca2+ oscillations and potentiates downstream nuclear factor kappa B activation, which is central to inflammation. Our findings pinpoint the mitochondrial calcium uniporter complex as a keystone molecular apparatus that links age-related changes in mitochondrial physiology to systemic macrophage-mediated age-associated inflammation. The findings raise the exciting possibility that restoring mCa2+ uptake capacity in tissue-resident macrophages may decrease inflammaging of specific organs and alleviate age-associated conditions such as neurodegenerative and cardiometabolic diseases.
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Affiliation(s)
- Philip V Seegren
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
- Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Logan R Harper
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Taylor K Downs
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
- Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Xiao-Yu Zhao
- Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Microbiology, Immunology, and Cancer Biology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | | | - Marta E Stremska
- Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Microbiology, Immunology, and Cancer Biology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Rachel J Olson
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Joel Kennedy
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Sarah E Ewald
- Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Microbiology, Immunology, and Cancer Biology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Pankaj Kumar
- Biochemistry and Molecular Genetics Department, University of Virginia School of Medicine, Charlottesville, VA, USA
- University of Virginia, Bioinformatics Core, Charlottesville, VA, USA
| | - Bimal N Desai
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA.
- Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, VA, USA.
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6
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Damacena de Angelis C, Endoni BT, Nuno D, Lamping K, Ledolter J, Koval OM, Grumbach IM. Sex‐Specific Differences in Endothelial Function Are Driven by Divergent Mitochondrial Ca
2+
Handling. J Am Heart Assoc 2022; 11:e023912. [PMID: 35766269 PMCID: PMC9333382 DOI: 10.1161/jaha.121.023912] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background
Sex‐specific differences in vasodilation are mediated in part by differences in cytosolic Ca
2+
handling, but how variations in mitochondrial Ca
2+
contributes to this effect remains unknown. Here, we investigated the extent to which mitochondrial Ca
2+
entry via the MCU (mitochondrial Ca
2+
uniporter) drives sex differences in vasoreactivity in resistance arteries.
Methods and Results
Enhanced vasodilation of mesenteric resistance arteries to acetylcholine (ACh) was reduced to larger extent in female compared with male mice in 2 genetic models of endothelial MCU ablation. Ex vivo Ca
2+
imaging of mesenteric arteries with Fura‐2AM confirmed higher cytosolic Ca
2+
transients triggered by ACh in arteries from female mice versus male mice. MCU inhibition both strongly reduced cytosolic Ca
2+
transients and blocked mitochondrial Ca
2+
entry. In cultured human aortic endothelial cells, treatment with physiological concentrations of estradiol enhanced cytosolic Ca
2+
transients, Ca
2+
buffering capacity, and mitochondrial Ca
2+
entry in response to ATP or repeat Ca
2+
boluses. Further experiments to establish the mechanisms underlying these effects did not reveal significant differences in the expression of MCU subunits, at either the mRNA or protein level. However, estradiol treatment was associated with an increase in mitochondrial mass, mitochondrial fusion, and the mitochondrial membrane potential and reduced mitochondrial superoxide production.
Conclusions
Our data confirm that mitochondrial function in endothelial cells differs by sex, with female mice having enhanced Ca
2+
uptake capacity, and that these differences are attributable to the presence of more mitochondria and a higher mitochondrial membrane potential in female mice rather than differences in composition of the MCU complex.
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Affiliation(s)
- Celio Damacena de Angelis
- Department of Internal Medicine, Abboud Cardiovascular Research Center University of Iowa Iowa City IA
| | - Benney T. Endoni
- Department of Internal Medicine, Abboud Cardiovascular Research Center University of Iowa Iowa City IA
| | - Daniel Nuno
- Department of Internal Medicine, Abboud Cardiovascular Research Center University of Iowa Iowa City IA
| | - Kathryn Lamping
- Department of Internal Medicine, Abboud Cardiovascular Research Center University of Iowa Iowa City IA
- Department of Pharmacology Carver College of Medicine University of Iowa Iowa City IA
- Iowa City VA Healthcare System Iowa City IA
| | - Johannes Ledolter
- Tippie College of Business University of Iowa Iowa City IA
- College of Liberal Arts and Sciences University of Iowa Iowa City IA
| | - Olha M. Koval
- Department of Internal Medicine, Abboud Cardiovascular Research Center University of Iowa Iowa City IA
| | - Isabella M. Grumbach
- Department of Internal Medicine, Abboud Cardiovascular Research Center University of Iowa Iowa City IA
- Redox and Radiation Biology Program Holden Comprehensive Cancer Center University of Iowa Iowa City IA
- Iowa City VA Healthcare System Iowa City IA
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7
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Involvement and therapeutic implications of airway epithelial barrier dysfunction in type 2 inflammation of asthma. Chin Med J (Engl) 2022; 135:519-531. [PMID: 35170505 PMCID: PMC8920422 DOI: 10.1097/cm9.0000000000001983] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Type 2 inflammation is a complex immune response and primary mechanism for several common allergic diseases including allergic rhinitis, allergic asthma, atopic dermatitis, and chronic rhinosinusitis with nasal polyps. It is the predominant type of immune response against helminths to prevent their tissue infiltration and induce their expulsion. Recent studies suggest that epithelial barrier dysfunction contributes to the development of type 2 inflammation in asthma, which may partly explain the increasing prevalence of asthma in China and around the globe. The epithelial barrier hypothesis has recently been proposed and has received great interest from the scientific community. The development of leaky epithelial barriers leads to microbial dysbiosis and the translocation of bacteria to inter- and sub-epithelial areas and the development of epithelial tissue inflammation. Accordingly, preventing the impairment and promoting the restoration of a deteriorated airway epithelial barrier represents a promising strategy for the treatment of asthma. This review introduces the interaction between type 2 inflammation and the airway epithelial barrier in asthma, the structure and molecular composition of the airway epithelial barrier, and the assessment of epithelial barrier integrity. The role of airway epithelial barrier disruption in the pathogenesis of asthma will be discussed. In addition, the possible mechanisms underlying the airway epithelial barrier dysfunction induced by allergens and environmental pollutants, and current treatments to restore the airway epithelial barrier are reviewed.
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8
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Meng Z, Chen H, Deng C, Meng S. Potential cellular endocrinology mechanisms underlying the effects of Chinese herbal medicine therapy on asthma. Front Endocrinol (Lausanne) 2022; 13:916328. [PMID: 36051395 PMCID: PMC9424672 DOI: 10.3389/fendo.2022.916328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 07/04/2022] [Indexed: 11/20/2022] Open
Abstract
Asthma is a complex syndrome with polygenetic tendency and multiple phenotypes, which has variable expiratory airflow limitation and respiratory symptoms that vary over time and in intensity. In recent years, continuous industrial development has seriously impacted the climate and air quality at a global scale. It has been verified that climate change can induce asthma in predisposed individuals and that atmospheric pollution can exacerbate asthma severity. At present, a subset of patients is resistant to the drug therapy for asthma. Hence, it is urgent to find new ideas for asthma prevention and treatment. In this review, we discuss the prescription, composition, formulation, and mechanism of traditional Chinese medicine monomer, traditional Chinese medicine monomer complex, single herbs, and traditional Chinese patent medicine in the treatment of asthma. We also discuss the effects of Chinese herbal medicine on asthma from the perspective of cellular endocrinology in the past decade, emphasizing on the roles as intracellular and extracellular messengers of three substances-hormones, substances secreted by pulmonary neuroendocrine cells, and neuroendocrine-related signaling protein-which provide the theoretical basis for clinical application and new drug development.
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Affiliation(s)
- Zeyu Meng
- The Second Clinical Medical College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Huize Chen
- Department of Traditional Chinese Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Chujun Deng
- Department of Traditional Chinese Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Shengxi Meng
- Department of Traditional Chinese Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
- *Correspondence: Shengxi Meng,
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9
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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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10
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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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11
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Modesti L, Danese A, Angela Maria Vitto V, Ramaccini D, Aguiari G, Gafà R, Lanza G, Giorgi C, Pinton P. Mitochondrial Ca 2+ Signaling in Health, Disease and Therapy. Cells 2021; 10:cells10061317. [PMID: 34070562 PMCID: PMC8230075 DOI: 10.3390/cells10061317] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 12/12/2022] Open
Abstract
The divalent cation calcium (Ca2+) is considered one of the main second messengers inside cells and acts as the most prominent signal in a plethora of biological processes. Its homeostasis is guaranteed by an intricate and complex system of channels, pumps, and exchangers. In this context, by regulating cellular Ca2+ levels, mitochondria control both the uptake and release of Ca2+. Therefore, at the mitochondrial level, Ca2+ plays a dual role, participating in both vital physiological processes (ATP production and regulation of mitochondrial metabolism) and pathophysiological processes (cell death, cancer progression and metastasis). Hence, it is not surprising that alterations in mitochondrial Ca2+ (mCa2+) pathways or mutations in Ca2+ transporters affect the activities and functions of the entire cell. Indeed, it is widely recognized that dysregulation of mCa2+ signaling leads to various pathological scenarios, including cancer, neurological defects and cardiovascular diseases (CVDs). This review summarizes the current knowledge on the regulation of mCa2+ homeostasis, the related mechanisms and the significance of this regulation in physiology and human diseases. We also highlight strategies aimed at remedying mCa2+ dysregulation as promising therapeutical approaches.
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Affiliation(s)
- Lorenzo Modesti
- Laboratory for Technologies of Advanced Therapies (LTTA), Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (L.M.); (A.D.); (V.A.M.V.); (D.R.); (C.G.)
| | - Alberto Danese
- Laboratory for Technologies of Advanced Therapies (LTTA), Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (L.M.); (A.D.); (V.A.M.V.); (D.R.); (C.G.)
| | - Veronica Angela Maria Vitto
- Laboratory for Technologies of Advanced Therapies (LTTA), Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (L.M.); (A.D.); (V.A.M.V.); (D.R.); (C.G.)
| | - Daniela Ramaccini
- Laboratory for Technologies of Advanced Therapies (LTTA), Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (L.M.); (A.D.); (V.A.M.V.); (D.R.); (C.G.)
| | - Gianluca Aguiari
- Department of Neuroscience and Rehabilitation, University of Ferrara, 44121 Ferrara, Italy;
| | - Roberta Gafà
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (R.G.); (G.L.)
| | - Giovanni Lanza
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (R.G.); (G.L.)
| | - Carlotta Giorgi
- Laboratory for Technologies of Advanced Therapies (LTTA), Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (L.M.); (A.D.); (V.A.M.V.); (D.R.); (C.G.)
| | - Paolo Pinton
- Laboratory for Technologies of Advanced Therapies (LTTA), Department of Medical Sciences, University of Ferrara, 44121 Ferrara, Italy; (L.M.); (A.D.); (V.A.M.V.); (D.R.); (C.G.)
- Correspondence: ; Tel.: +39-0532-455802
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12
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Hu J, Wang J, Li C, Shang Y. Fructose-1,6-bisphosphatase aggravates oxidative stress-induced apoptosis in asthma by suppressing the Nrf2 pathway. J Cell Mol Med 2021; 25:5001-5014. [PMID: 33960626 PMCID: PMC8178285 DOI: 10.1111/jcmm.16439] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/28/2021] [Accepted: 02/24/2021] [Indexed: 12/27/2022] Open
Abstract
Asthma is a chronic airway disease that causes excessive inflammation, oxidative stress, mucus production and bronchial epithelial cell apoptosis. Fructose‐1,6‐bisphosphatase (Fbp1) is one of the rate‐limiting enzymes in gluconeogenesis and plays a critical role in several cancers. However, its role in inflammatory diseases, such as asthma, is unclear. Here, we examined the expression, function and mechanism of action of Fbp1 in asthma. Gene Expression Omnibus (GEO) data sets revealed that Fbp1 was overexpressed in a murine model of asthma and in interleukin (IL)‐4‐ or IL‐13‐stimulated bronchial epithelial cells. We confirmed the findings in an animal model as well as Beas‐2B and 16HBE cells. In vitro investigations revealed that silencing of Fbp1 reduced apoptosis and the proportion of cells in the G2/M phase, whereas overexpression led to increases. Fbp1 knock‐down inhibited oxidative stress by activating the nuclear factor erythroid 2‐related factor 2 (Nrf2) pathway, whereas Fbp1 overexpression aggravated oxidative stress by suppressingthe Nrf2 pathway. Moreover, the Nrf2 pathway inhibitor ML385 reversed the changes caused by Fbp1 inhibition in Beas‐2B and 16HBE cells. Collectively, our data indicate that Fbp1 aggravates oxidative stress‐induced apoptosis by suppressing Nrf2 signalling, substantiating its potential as a novel therapeutic target in asthma.
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Affiliation(s)
- Jiapeng Hu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jia Wang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Chunlu Li
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yunxiao Shang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
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13
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Dastghaib S, Kumar PS, Aftabi S, Damera G, Dalvand A, Sepanjnia A, Kiumarsi M, Aghanoori MR, Sohal SS, Ande SR, Alizadeh J, Mokarram P, Ghavami S, Sharma P, Zeki AA. Mechanisms Targeting the Unfolded Protein Response in Asthma. Am J Respir Cell Mol Biol 2021; 64:29-38. [PMID: 32915643 DOI: 10.1165/rcmb.2019-0235tr] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 09/11/2020] [Indexed: 12/16/2022] Open
Abstract
Lung cells are constantly exposed to various internal and external stressors that disrupt protein homeostasis. To cope with these stimuli, cells evoke a highly conserved adaptive mechanism called the unfolded protein response (UPR). UPR stressors can impose greater protein secretory demands on the endoplasmic reticulum (ER), resulting in the development, differentiation, and survival of these cell types to meet these increasing functional needs. Dysregulation of the UPR leads to the development of the disease. The UPR and ER stress are involved in several human conditions, such as chronic inflammation, neurodegeneration, metabolic syndrome, and cancer. Furthermore, potent and specific compounds that target the UPR pathway are under development as future therapies. The focus of this review is to thoroughly describe the effects of both internal and external stressors on the ER in asthma. Furthermore, we discuss how the UPR signaling pathway is activated in the lungs to overcome cellular damage. We also present an overview of the pathogenic mechanisms, with a brief focus on potential strategies for pharmacological interventions.
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Affiliation(s)
- Sanaz Dastghaib
- Department of Clinical Biochemistry and
- Autophagy Research Center, Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - P Sravan Kumar
- National Institute of Pharmaceutical Education and Research, Hyderabad, Telangana, India
| | - Sajjad Aftabi
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine
- Medical Physics Department and
| | - Gautam Damera
- Personalized and Predictive Medicine (Respiratory), Global Research and Development, Teva Pharmaceuticals, Malvern, Pennsylvania
| | - Azadeh Dalvand
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine
| | - Adel Sepanjnia
- Department of Immunology, School of Medicine, Jiroft University of Medical Science, Jiroft, Iran
| | - Mohammad Kiumarsi
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine
| | - Mohamad-Reza Aghanoori
- Department of Human Genetics, School of Medicine, and
- Department of Pharmacology and Therapeutics
- Division of Neurodegenerative Disorders, Albrechtsen Research Centre, St. Boniface Hospital, Winnipeg, Manitoba, Canada
| | - Sukhwinder Singh Sohal
- Respiratory Translational Research Group, Department of Laboratory Medicine, College of Health and Medicine, University of Tasmania, Launceston, Tasmania, Australia
| | | | - Javad Alizadeh
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine
- Research Institute of Oncology and Hematology, Cancer Care Manitoba-University of Manitoba, Winnipeg, Manitoba, Canada
| | - Pooneh Mokarram
- Department of Clinical Biochemistry and
- Autophagy Research Center, Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeid Ghavami
- Autophagy Research Center, Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, Max Rady College of Medicine
- Department of Internal Medicine, and
- Biology of Breathing Theme, Children Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Pawan Sharma
- Center for Translational Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Amir A Zeki
- Lung Center, Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, School of Medicine, University of California, Davis, Davis, California; and
- Veterans Affairs Medical Center, Mather, California
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14
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Ray A, Jaiswal A, Dutta J, Singh S, Mabalirajan U. A looming role of mitochondrial calcium in dictating the lung epithelial integrity and pathophysiology of lung diseases. Mitochondrion 2020; 55:111-121. [PMID: 32971294 PMCID: PMC7505072 DOI: 10.1016/j.mito.2020.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/20/2020] [Accepted: 09/10/2020] [Indexed: 12/20/2022]
Abstract
With the increasing appreciation of mitochondria in modulating cellular homeostasis, various disease biology researchers have started exploring the detailed role of mitochondria in multiple diseases beyond neuronal and muscular diseases. In this context, emerging shreds of evidence in lung biology indicated the meticulous role of lung epithelia in provoking a plethora of lung diseases in contrast to earlier beliefs. As lung epithelia are ceaselessly exposed to the environment, they need to have multiple protective mechanisms to maintain the integrity of lung structure and function. As ciliated airway epithelium and type 2 alveolar epithelia require intense energy for executing their key functions like ciliary beating and surfactant production, it is no surprise that defects in mitochondrial function in these cells could perturb lung homeostasis and engage in the pathophysiology of lung diseases. On one hand, intracellular calcium plays the central role in executing key functions of lung epithelia, and on the other hand maintenance of intracellular calcium needs the buffering role of mitochondria. Thus, the regulation of mitochondrial calcium in lung epithelia seems to be critical in lung homeostasis and could be decisive in the pathogenesis of various lung diseases.
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Affiliation(s)
- Archita Ray
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Ashish Jaiswal
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Joytri Dutta
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Sabita Singh
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Ulaganathan Mabalirajan
- Molecular Pathobiology of Respiratory Diseases, Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
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15
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Dimasuay KG, Schaunaman N, Martin RJ, Pavelka N, Kolakowski C, Gottlieb RA, Holguin F, Chu HW. Parkin, an E3 ubiquitin ligase, enhances airway mitochondrial DNA release and inflammation. Thorax 2020; 75:717-724. [PMID: 32499407 DOI: 10.1136/thoraxjnl-2019-214158] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 04/23/2020] [Accepted: 05/04/2020] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Parkin (Park2), an E3 ubiquitin ligase, is critical to maintain mitochondrial function by regulating mitochondrial biogenesis and degradation (mitophagy), but recent evidence suggests the involvement of Parkin in promoting inflammation. In the present study, we determined if Parkin regulates airway mitochondrial DNA (mtDNA) release and inflammatory responses to type 2 cytokine interleukin (IL)-13 and allergens. METHODS We measured Parkin mRNA expression in brushed bronchial epithelial cells and mtDNA release in the paired bronchoalveolar lavage fluid (BALF) from normal subjects and asthmatics. Parkin-deficient primary human tracheobronchial epithelial (HTBE) cells generated using the CRISPR-Cas9 system were stimulated with IL-13. To determine the in vivo function of Parkin, Parkin knockout (PKO) and wild-type (WT) mice were treated with IL-13 or allergen (house dust mite, HDM) in the presence or absence of mtDNA isolated from normal mouse lungs. RESULTS Parkin mRNA expression in asthmatic airway epithelium was upregulated, which positively correlated with the levels of released mtDNA in BALF. IL-13-stimulated HTBE cells increased Parkin expression. Moreover, IL-13 induced mtDNA release in Parkin-sufficient, but not in Parkin-deficient HTBE cells. PKO (vs WT) mice attenuated airway mtDNA release and inflammation following IL-13 or HDM treatments. mtDNA amplified airway inflammation in mice treated with IL-13 or HDM. Notably, Parkin also mediated mtDNA-induced exacerbation of airway inflammation. CONCLUSION Our research findings suggest that Parkin promotes mtDNA release and inflammation in airways, thus improving our understanding of the complex role of Parkin and mitochondrial dysfunction in asthma pathogenesis.
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Affiliation(s)
| | | | - Richard J Martin
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Nicole Pavelka
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | | | - Roberta A Gottlieb
- The Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA
| | - Fernando Holguin
- Division of Pulmonary and Critical Care, Department of Medicine, University of Colorado Denver - Anschutz Medical Campus, Aurora, Colorado, USA
| | - Hong Wei Chu
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
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16
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Chvanov M, Voronina S, Zhang X, Telnova S, Chard R, Ouyang Y, Armstrong J, Tanton H, Awais M, Latawiec D, Sutton R, Criddle DN, Tepikin AV. Knockout of the Mitochondrial Calcium Uniporter Strongly Suppresses Stimulus-Metabolism Coupling in Pancreatic Acinar Cells but Does Not Reduce Severity of Experimental Acute Pancreatitis. Cells 2020; 9:cells9061407. [PMID: 32516955 PMCID: PMC7349284 DOI: 10.3390/cells9061407] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/28/2020] [Accepted: 06/01/2020] [Indexed: 12/13/2022] Open
Abstract
Acute pancreatitis is a frequent disease that lacks specific drug treatment. Unravelling the molecular mechanisms of acute pancreatitis is essential for the development of new therapeutics. Several inducers of acute pancreatitis trigger sustained Ca2+ increases in the cytosol and mitochondria of pancreatic acinar cells. The mitochondrial calcium uniporter (MCU) mediates mitochondrial Ca2+ uptake that regulates bioenergetics and plays an important role in cell survival, damage and death. Aberrant Ca2+ signaling and mitochondrial damage in pancreatic acinar cells have been implicated in the initiation of acute pancreatitis. The primary aim of this study was to assess the involvement of the MCU in experimental acute pancreatitis. We found that pancreatic acinar cells from MCU-/- mice display dramatically reduced mitochondrial Ca2+ uptake. This is consistent with the drastic changes of stimulus-metabolism coupling, manifested by the reduction of mitochondrial NADH/FAD+ responses to cholecystokinin and in the decrease of cholecystokinin-stimulated oxygen consumption. However, in three experimental models of acute pancreatitis (induced by caerulein, taurolithocholic acid 3-sulfate or palmitoleic acid plus ethanol), MCU knockout failed to reduce the biochemical and histological changes characterizing the severity of local and systemic damage. A possible explanation of this surprising finding is the redundancy of damaging mechanisms activated by the inducers of acute pancreatitis.
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Affiliation(s)
- Michael Chvanov
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool L69 3BX, UK; (S.V.); (S.T.); (R.C.); (Y.O.); (H.T.); (D.N.C)
- Correspondence: (M.C.); (A.V.T.); Tel.: +44-(0)15-1794-5357 (M.C.); +44-(0)15-1794-5351 (A.V.T.)
| | - Svetlana Voronina
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool L69 3BX, UK; (S.V.); (S.T.); (R.C.); (Y.O.); (H.T.); (D.N.C)
| | - Xiaoying Zhang
- Liverpool Pancreatitis Research Group, Royal Liverpool University Hospital, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3BX, UK; (X.Z.); (J.A.); (M.A.); (D.L.); (R.S.)
| | - Svetlana Telnova
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool L69 3BX, UK; (S.V.); (S.T.); (R.C.); (Y.O.); (H.T.); (D.N.C)
| | - Robert Chard
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool L69 3BX, UK; (S.V.); (S.T.); (R.C.); (Y.O.); (H.T.); (D.N.C)
| | - Yulin Ouyang
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool L69 3BX, UK; (S.V.); (S.T.); (R.C.); (Y.O.); (H.T.); (D.N.C)
| | - Jane Armstrong
- Liverpool Pancreatitis Research Group, Royal Liverpool University Hospital, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3BX, UK; (X.Z.); (J.A.); (M.A.); (D.L.); (R.S.)
| | - Helen Tanton
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool L69 3BX, UK; (S.V.); (S.T.); (R.C.); (Y.O.); (H.T.); (D.N.C)
| | - Muhammad Awais
- Liverpool Pancreatitis Research Group, Royal Liverpool University Hospital, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3BX, UK; (X.Z.); (J.A.); (M.A.); (D.L.); (R.S.)
| | - Diane Latawiec
- Liverpool Pancreatitis Research Group, Royal Liverpool University Hospital, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3BX, UK; (X.Z.); (J.A.); (M.A.); (D.L.); (R.S.)
| | - Robert Sutton
- Liverpool Pancreatitis Research Group, Royal Liverpool University Hospital, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3BX, UK; (X.Z.); (J.A.); (M.A.); (D.L.); (R.S.)
| | - David N. Criddle
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool L69 3BX, UK; (S.V.); (S.T.); (R.C.); (Y.O.); (H.T.); (D.N.C)
| | - Alexei V. Tepikin
- Department of Cellular and Molecular Physiology, University of Liverpool, Liverpool L69 3BX, UK; (S.V.); (S.T.); (R.C.); (Y.O.); (H.T.); (D.N.C)
- Correspondence: (M.C.); (A.V.T.); Tel.: +44-(0)15-1794-5357 (M.C.); +44-(0)15-1794-5351 (A.V.T.)
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17
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Roy SJ, Koval OM, Sebag SC, Ait-Aissa K, Allen BG, Spitz DR, Grumbach IM. Inhibition of CaMKII in mitochondria preserves endothelial barrier function after irradiation. Free Radic Biol Med 2020; 146:287-298. [PMID: 31711984 PMCID: PMC7274136 DOI: 10.1016/j.freeradbiomed.2019.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 11/04/2019] [Accepted: 11/07/2019] [Indexed: 01/03/2023]
Abstract
Damage to the microvascular endothelium is an important part of normal tissue injury after radiation exposure and driven by the production of pro-oxidants. The Ca2+/calmodulin-dependent protein kinase II is present in the mitochondrial matrix (mitoCaMKII) where it regulates Ca2+ uptake via the mitochondrial Ca2+ uniporter (MCU) and pro-oxidant production. Here, we demonstrate that radiation exposure disrupts endothelial cell barrier integrity in vitro, but can be abrogated by inhibition of mitoCaMKII, MCU, or opening of the mitochondrial transition pore. Scavenging of mitochondrial pro-oxidants with mitoTEMPO before, but not after irradiation, protected barrier function. Furthermore, markers of apoptosis and mitochondrial pro-oxidant production were elevated at 24 h following irradiation and abolished by mitoCaMKII inhibition. Endothelial barrier dysfunction was detected as early as 2 h after irradiation. Despite only mildly impaired mitochondrial respiration, the intracellular ATP levels were significantly reduced 4 h after irradiation and correlated with barrier function. MitoCaMKII inhibition improved intracellular ATP concentrations by increasing glycolysis. Finally, DNA double strand break repair and non-homologous end joining, two major drivers of ATP consumption after irradiation, were greatly increased but not significantly affected by mitoCaMKII inhibition. These findings support the hypothesis that mitoCaMKII activity is linked to mitochondrial pro-oxidant production, reduced ATP production, and loss of endothelial barrier function following irradiation. The inhibition of mitoCaMKII is a promising approach to limiting radiation-induced endothelial injury.
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Affiliation(s)
- Stephen J Roy
- Abboud Cardiovascular Research Center, Division of Cardiovascular Medicine, Department of Internal Medicine, 169 Newton Rd, 4336 PBDB, University of Iowa, Iowa City, IA, 52242, USA
| | - Olha M Koval
- Abboud Cardiovascular Research Center, Division of Cardiovascular Medicine, Department of Internal Medicine, 169 Newton Rd, 4336 PBDB, University of Iowa, Iowa City, IA, 52242, USA
| | - Sara C Sebag
- Abboud Cardiovascular Research Center, Division of Cardiovascular Medicine, Department of Internal Medicine, 169 Newton Rd, 4336 PBDB, University of Iowa, Iowa City, IA, 52242, USA
| | - Karima Ait-Aissa
- Abboud Cardiovascular Research Center, Division of Cardiovascular Medicine, Department of Internal Medicine, 169 Newton Rd, 4336 PBDB, University of Iowa, Iowa City, IA, 52242, USA
| | - Bryan G Allen
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, B180 Medical Laboratories, University of Iowa, Iowa City, IA, 52242, USA
| | - Douglas R Spitz
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, B180 Medical Laboratories, University of Iowa, Iowa City, IA, 52242, USA
| | - Isabella M Grumbach
- Abboud Cardiovascular Research Center, Division of Cardiovascular Medicine, Department of Internal Medicine, 169 Newton Rd, 4336 PBDB, University of Iowa, Iowa City, IA, 52242, USA; Free Radical and Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, B180 Medical Laboratories, University of Iowa, Iowa City, IA, 52242, USA; Veterans Affairs Health Care System, 601 Hwy 6 West Iowa City, IA, 52246, USA.
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18
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Aghapour M, Remels AHV, Pouwels SD, Bruder D, Hiemstra PS, Cloonan SM, Heijink IH. Mitochondria: at the crossroads of regulating lung epithelial cell function in chronic obstructive pulmonary disease. Am J Physiol Lung Cell Mol Physiol 2020; 318:L149-L164. [PMID: 31693390 PMCID: PMC6985875 DOI: 10.1152/ajplung.00329.2019] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/04/2019] [Accepted: 11/04/2019] [Indexed: 12/13/2022] Open
Abstract
Disturbances in mitochondrial structure and function in lung epithelial cells have been implicated in the pathogenesis of various lung diseases, including chronic obstructive pulmonary disease (COPD). Such disturbances affect not only cellular energy metabolism but also alter a range of indispensable cellular homeostatic functions in which mitochondria are known to be involved. These range from cellular differentiation, cell death pathways, and cellular remodeling to physical barrier function and innate immunity, all of which are known to be impacted by exposure to cigarette smoke and have been linked to COPD pathogenesis. Next to their well-established role as the first physical frontline against external insults, lung epithelial cells are immunologically active. Malfunctioning epithelial cells with defective mitochondria are unable to maintain homeostasis and respond adequately to further stress or injury, which may ultimately shape the phenotype of lung diseases. In this review, we provide a comprehensive overview of the impact of cigarette smoke on the development of mitochondrial dysfunction in the lung epithelium and highlight the consequences for cell function, innate immune responses, epithelial remodeling, and epithelial barrier function in COPD. We also discuss the applicability and potential therapeutic value of recently proposed strategies for the restoration of mitochondrial function in the treatment of COPD.
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Affiliation(s)
- Mahyar Aghapour
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control, and Prevention, Health Campus Immunology, Infectiology, and Inflammation, Otto-von-Guericke University, Magdeburg, Germany and Immune Regulation Group, Helmholtz Center for Infection Research, Braunschweig, Germany
| | - Alexander H V Remels
- Department of Pharmacology and Toxicology, School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Simon D Pouwels
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
| | - Dunja Bruder
- Infection Immunology Group, Institute of Medical Microbiology, Infection Control, and Prevention, Health Campus Immunology, Infectiology, and Inflammation, Otto-von-Guericke University, Magdeburg, Germany and Immune Regulation Group, Helmholtz Center for Infection Research, Braunschweig, Germany
| | - Pieter S Hiemstra
- Department of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands
| | - Suzanne M Cloonan
- Division of Pulmonary and Critical Care Medicine, Joan and Stanford I, Weill Department of Medicine, Weill Cornell Medical College, New York, New York
| | - Irene H Heijink
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
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19
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Danese A, Marchi S, Vitto VAM, Modesti L, Leo S, Wieckowski MR, Giorgi C, Pinton P. Cancer-Related Increases and Decreases in Calcium Signaling at the Endoplasmic Reticulum-Mitochondria Interface (MAMs). Rev Physiol Biochem Pharmacol 2020; 185:153-193. [PMID: 32789789 DOI: 10.1007/112_2020_43] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Endoplasmic reticulum (ER)-mitochondria regions are specialized subdomains called also mitochondria-associated membranes (MAMs). MAMs allow regulation of lipid synthesis and represent hubs for ion and metabolite signaling. As these two organelles can module both the amplitude and the spatiotemporal patterns of calcium (Ca2+) signals, this particular interaction controls several Ca2+-dependent pathways well known for their contribution to tumorigenesis, such as metabolism, survival, sensitivity to cell death, and metastasis. Mitochondria-mediated apoptosis arises from mitochondrial Ca2+ overload, permeabilization of the mitochondrial outer membrane, and the release of mitochondrial apoptotic factors into the cytosol. Decreases in Ca2+ signaling at the ER-mitochondria interface are being studied in depth as failure of apoptotic-dependent cell death is one of the predominant characteristics of cancer cells. However, some recent papers that linked MAMs Ca2+ crosstalk-related upregulation to tumor onset and progression have aroused the interest of the scientific community.In this review, we will describe how different MAMs-localized proteins modulate the effectiveness of Ca2+-dependent apoptotic stimuli by causing both increases and decreases in the ER-mitochondria interplay and, specifically, by modulating Ca2+ signaling.
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Affiliation(s)
- Alberto Danese
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Saverio Marchi
- Department of Clinical and Molecular Sciences, Marche Polytechnic University, Ancona, Italy
| | - Veronica Angela Maria Vitto
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Lorenzo Modesti
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Sara Leo
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Mariusz R Wieckowski
- Laboratory of Mitochondrial Biology and Metabolism, Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | - Carlotta Giorgi
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Paolo Pinton
- Department of Medical Sciences, Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy.
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20
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Marchi S, Vitto VAM, Danese A, Wieckowski MR, Giorgi C, Pinton P. Mitochondrial calcium uniporter complex modulation in cancerogenesis. Cell Cycle 2019; 18:1068-1083. [PMID: 31032692 DOI: 10.1080/15384101.2019.1612698] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Aberrations in mitochondrial Ca2+ homeostasis have been associated with different pathological conditions, including neurological defects, cardiovascular diseases, and, in the last years, cancer. With the recent molecular identification of the mitochondrial calcium uniporter (MCU) complex, the channel that allows Ca2+ accumulation into the mitochondrial matrix, alterations in the expression levels or functioning in one or more MCU complex members have been linked to different cancers and cancer-related phenotypes. In this review, we will analyze the role of the uniporter and mitochondrial Ca2+ derangements in modulating cancer cell sensitivity to death, invasiveness, and migratory capacity, as well as cancer progression in vivo. We will also discuss some critical points and contradictory results to highlight the consequence of MCU complex modulation in tumor development.
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Affiliation(s)
- Saverio Marchi
- a Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology , Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara , Ferrara , Italy.,b Department of Clinical and Molecular Sciences, Polytechnical University of Marche , Ancona , Italy
| | - Veronica Angela Maria Vitto
- a Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology , Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara , Ferrara , Italy
| | - Alberto Danese
- a Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology , Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara , Ferrara , Italy
| | | | - Carlotta Giorgi
- a Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology , Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara , Ferrara , Italy
| | - Paolo Pinton
- a Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology , Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara , Ferrara , Italy.,d Maria Cecilia Hospital, GVM Care & Research, 48033 , Cotignola , Ravenna , Italy
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21
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Woods J, Nemani N, Shanmughapriya S, Kumar A, Zhang M, Nathan SR, Thomas M, Carvalho E, Ramachandran K, Srikantan S, Stathopulos PB, Wilson JJ, Madesh M. A Selective and Cell-Permeable Mitochondrial Calcium Uniporter (MCU) Inhibitor Preserves Mitochondrial Bioenergetics after Hypoxia/Reoxygenation Injury. ACS CENTRAL SCIENCE 2019; 5:153-166. [PMID: 30693334 PMCID: PMC6346394 DOI: 10.1021/acscentsci.8b00773] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Indexed: 05/10/2023]
Abstract
Mitochondrial Ca2+ (mCa2+) uptake mediated by the mitochondrial calcium uniporter (MCU) plays a critical role in signal transduction, bioenergetics, and cell death, and its dysregulation is linked to several human diseases. In this study, we report a new ruthenium complex Ru265 that is cell-permeable, minimally toxic, and highly potent with respect to MCU inhibition. Cells treated with Ru265 show inhibited MCU activity without any effect on cytosolic Ca2+ dynamics and mitochondrial membrane potential (ΔΨm). Dose-dependent studies reveal that Ru265 is more potent than the currently employed MCU inhibitor Ru360. Site-directed mutagenesis of Cys97 in the N-terminal domain of human MCU ablates the inhibitory activity of Ru265, suggesting that this matrix-residing domain is its target site. Additionally, Ru265 prevented hypoxia/reoxygenation injury and subsequent mitochondrial dysfunction, demonstrating that this new inhibitor is a valuable tool for studying the functional role of the MCU in intact biological models.
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Affiliation(s)
- Joshua
J. Woods
- Robert
F. Smith School for Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York 14853, United
States
| | - Neeharika Nemani
- Department
of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
- Center
for Translational Medicine, Lewis Katz School
of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Santhanam Shanmughapriya
- Department
of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
- Center
for Translational Medicine, Lewis Katz School
of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Akshay Kumar
- Department
of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
- Center
for Translational Medicine, Lewis Katz School
of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
| | - MengQi Zhang
- Department
of Physiology and Pharmacology, Western
University, London, Ontario N6A 5C1, Canada
| | - Sarah R. Nathan
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York 14853, United
States
| | - Manfred Thomas
- Department
of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
- Center
for Translational Medicine, Lewis Katz School
of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Edmund Carvalho
- Department
of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
- Center
for Translational Medicine, Lewis Katz School
of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Karthik Ramachandran
- Department
of Medicine/Nephrology, Institute for Precision Medicine and Health, University of Texas Health San Antonio, San Antonio, Texas 78229, United States
| | - Subramanya Srikantan
- Department
of Medicine/Nephrology, Institute for Precision Medicine and Health, University of Texas Health San Antonio, San Antonio, Texas 78229, United States
| | - Peter B. Stathopulos
- Department
of Physiology and Pharmacology, Western
University, London, Ontario N6A 5C1, Canada
| | - Justin J. Wilson
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York 14853, United
States
| | - Muniswamy Madesh
- Department
of Medical Genetics and Molecular Biochemistry, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
- Center
for Translational Medicine, Lewis Katz School
of Medicine at Temple University, Philadelphia, Pennsylvania 19140, United States
- Department
of Medicine/Nephrology, Institute for Precision Medicine and Health, University of Texas Health San Antonio, San Antonio, Texas 78229, United States
| |
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