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Olvera-Rojas M, Plaza-Florido A, Solis-Urra P, Osuna-Prieto FJ, Ortega FB. Neurological-related proteomic profiling in plasma of children with metabolic healthy and unhealthy overweight/obesity. Pediatr Obes 2024:e13155. [PMID: 39075931 DOI: 10.1111/ijpo.13155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 06/13/2024] [Accepted: 07/10/2024] [Indexed: 07/31/2024]
Abstract
OBJECTIVE Children with overweight/obesity (OW/OB) exhibit poor cardiometabolic health, yet mechanisms influencing brain health remain unclear. We examined the differences in neurological-related circulating proteins in plasma among children with metabolically healthy obesity (MHO) and metabolically unhealthy obesity (MUO) and the association with metabolic syndrome markers. METHODS In this cross-sectional study, we included 84 Caucasian children (39% girls), aged 10.1 ± 1.1 years, from the ActiveBrains project (NCT02295072). A ninety-two-protein targeted approach using Olink's® technology was used. RESULTS We identified distinct concentrations of CD38, LAIR2, MANF and NRP2 proteins in MHO compared with MUO. Moreover, individual metabolic syndrome (MS) markers were linked to nine proteins (CD38, CPM, EDA2R, IL12, JAMB, KYNU, LAYN, MSR1 and SMOC2) in children with OW/OB. These proteins play crucial roles in diverse biological processes (e.g., angiogenesis, cholesterol transport, nicotinamide adenine dinucleotide (NAD+) catalysis and maintenance of blood-brain barrier) related to brain health. CONCLUSION Our proteomics study suggests that cardiometabolic health (represented by MHO/MUO or individual MS markers) is associated with the concentration in plasma of several proteins involved in brain health. Larger-scale studies are needed to contrast/confirm these findings, with CD38 standing out as a particularly noteworthy and robust discovery.
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Affiliation(s)
- Marcos Olvera-Rojas
- Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain
| | - Abel Plaza-Florido
- Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain
- Pediatric Exercise and Genomics Research Center, Department of Pediatrics, School of Medicine, University of California Irvine, Irvine, California, USA
| | - Patricio Solis-Urra
- Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain
- Faculty of Education and Social Sciences, Universidad Andres Bello, Viña del Mar, Chile
| | - Francisco J Osuna-Prieto
- Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain
- Hospital Universitari Joan XXIII de Tarragona, Institut d'Investigació Sanitària Pere Virgili (IISPV), Tarragona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Francisco B Ortega
- Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain
- Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
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Gayen S, Dachert S, Lashari BH, Gordon M, Desai P, Criner GJ, Cardet JC, Shenoy K. Critical Care Management of Severe Asthma Exacerbations. J Clin Med 2024; 13:859. [PMID: 38337552 PMCID: PMC10856115 DOI: 10.3390/jcm13030859] [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: 01/11/2024] [Revised: 01/27/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
Severe asthma exacerbations, including near-fatal asthma (NFA), have high morbidity and mortality. Mechanical ventilation of patients with severe asthma is difficult due to the complex pathophysiology resulting from severe bronchospasm and dynamic hyperinflation. Life-threatening complications of traditional ventilation strategies in asthma exacerbations include the development of systemic hypotension from hyperinflation, air trapping, and pneumothoraces. Optimizing pharmacologic techniques and ventilation strategies is crucial to treat the underlying bronchospasm. Despite optimal pharmacologic management and mechanical ventilation, the mortality rate of patients with severe asthma in intensive care units is 8%, suggesting a need for advanced non-pharmacologic therapies, including extracorporeal life support (ECLS). This review focuses on the pathophysiology of acute asthma exacerbations, ventilation management including non-invasive ventilation (NIV) and invasive mechanical ventilation (IMV), the pharmacologic management of acute asthma, and ECLS. This review also explores additional advanced non-pharmacologic techniques and monitoring tools for the safe and effective management of critically ill adult asthmatic patients.
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Affiliation(s)
- Shameek Gayen
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University Hospital, Philadelphia, PA 19140, USA; (S.D.); (B.H.L.); (M.G.); (P.D.); (G.J.C.); (K.S.)
| | - Stephen Dachert
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University Hospital, Philadelphia, PA 19140, USA; (S.D.); (B.H.L.); (M.G.); (P.D.); (G.J.C.); (K.S.)
| | - Bilal H. Lashari
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University Hospital, Philadelphia, PA 19140, USA; (S.D.); (B.H.L.); (M.G.); (P.D.); (G.J.C.); (K.S.)
| | - Matthew Gordon
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University Hospital, Philadelphia, PA 19140, USA; (S.D.); (B.H.L.); (M.G.); (P.D.); (G.J.C.); (K.S.)
| | - Parag Desai
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University Hospital, Philadelphia, PA 19140, USA; (S.D.); (B.H.L.); (M.G.); (P.D.); (G.J.C.); (K.S.)
| | - Gerard J. Criner
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University Hospital, Philadelphia, PA 19140, USA; (S.D.); (B.H.L.); (M.G.); (P.D.); (G.J.C.); (K.S.)
| | - Juan Carlos Cardet
- Division of Allergy and Immunology, Department of Internal Medicine, University of South Florida, Morsani College of Medicine, Tampa, FL 33602, USA;
| | - Kartik Shenoy
- Department of Thoracic Medicine and Surgery, Lewis Katz School of Medicine at Temple University Hospital, Philadelphia, PA 19140, USA; (S.D.); (B.H.L.); (M.G.); (P.D.); (G.J.C.); (K.S.)
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Pathak MP, Patowary P, Chattopadhyay P, Barbhuiyan PA, Islam J, Gogoi J, Wankhar W. Obesity-associated Airway Hyperresponsiveness: Mechanisms Underlying Inflammatory Markers and Possible Pharmacological Interventions. Endocr Metab Immune Disord Drug Targets 2024; 24:1053-1068. [PMID: 37957906 DOI: 10.2174/0118715303256440231028072049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 08/14/2023] [Accepted: 09/15/2023] [Indexed: 11/15/2023]
Abstract
Obesity is rapidly becoming a global health problem affecting about 13% of the world's population affecting women and children the most. Recent studies have stated that obese asthmatic subjects suffer from an increased risk of asthma, encounter severe symptoms, respond poorly to anti-asthmatic drugs, and ultimately their quality-of-life decreases. Although, the association between airway hyperresponsiveness (AHR) and obesity is a growing concern among the public due to lifestyle and environmental etiologies, however, the precise mechanism underlying this association is yet to establish. Apart from aiming at the conventional antiasthmatic targets, treatment should be directed towards ameliorating obesity pathogenesis too. Understanding the pathogenesis underlying the association between obesity and AHR is limited, however, a plethora of obesity pathologies have been reported viz., increased pro-inflammatory and decreased anti-inflammatory adipokines, depletion of ROS controller Nrf2/HO-1 axis, NLRP3 associated macrophage polarization, hypertrophy of WAT, and down-regulation of UCP1 in BAT following down-regulated AMPKα and melanocortin pathway that may be correlated with AHR. Increased waist circumference (WC) or central obesity was thought to be related to severe AHR, however, some recent reports suggest body mass index (BMI), not WC tends to exaggerate airway closure in AHR due to some unknown mechanisms. This review aims to co-relate the above-mentioned mechanisms that may explain the copious relation underlying obesity and AHR with the help of published reports. A proper understanding of these mechanisms discussed in this review will ensure an appropriate treatment plan for patients through advanced pharmacological interventions.
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Affiliation(s)
| | - Pompy Patowary
- Division of Pharmaceutical Technology, Defence Research Laboratory, Tezpur, India
| | | | | | - Johirul Islam
- Department of Pharmaceutical Sciences, School of Health Sciences, Assam Kaziranga University, Jorhat, India
| | - Jyotchna Gogoi
- Department of Biochemistry, Faculty of Science, Assam Down Town University, Guwahati, India
| | - Wankupar Wankhar
- Department of Dialysis, Faculty of Paramedical Science, Assam Down Town University, Guwahati, India
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Khalfaoui L, Pabelick CM. Airway smooth muscle in contractility and remodeling of asthma: potential drug target mechanisms. Expert Opin Ther Targets 2023; 27:19-29. [PMID: 36744401 DOI: 10.1080/14728222.2023.2177533] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Asthma is characterized by enhanced airway contractility and remodeling where airway smooth muscle (ASM) plays a key role, modulated by inflammation. Understanding the mechanisms by which ASM contributes to these features of asthma is essential for the development of novel asthma therapies. AREAS COVERED Inflammation in asthma contributes to a multitude of changes within ASM including enhanced airway contractility, proliferation, and fibrosis. Altered intracellular calcium ([Ca2+]i) regulation or Ca2+ sensitization contributes to airway hyperreactivity. Increased airway wall thickness from ASM proliferation and fibrosis contributes to structural changes seen with asthma. EXPERT OPINION ASM plays a significant role in multiple features of asthma. Increased ASM contractility contributes to hyperresponsiveness, while altered ASM proliferation and extracellular matrix production promote airway remodeling both influenced by inflammation of asthma and conversely even influencing the local inflammatory milieu. While standard therapies such as corticosteroids or biologics target inflammation, cytokines, or their receptors to alleviate asthma symptoms, these approaches do not address the underlying contribution of ASM to hyperresponsiveness and particularly remodeling. Therefore, novel therapies for asthma need to target abnormal contractility mechanisms in ASM and/or the contribution of ASM to remodeling, particularly in asthmatics resistant to current therapies.
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Affiliation(s)
- Latifa Khalfaoui
- Departments of Anesthesiology & Perioperative Medicine Mayo Clinic, Rochester, MN, USA
| | - Christina M Pabelick
- Departments of Anesthesiology & Perioperative Medicine Mayo Clinic, Rochester, MN, USA.,Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
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Xiong D(JP, Martin JG, Lauzon AM. Airway smooth muscle function in asthma. Front Physiol 2022; 13:993406. [PMID: 36277199 PMCID: PMC9581182 DOI: 10.3389/fphys.2022.993406] [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] [Received: 07/13/2022] [Accepted: 09/14/2022] [Indexed: 11/27/2022] Open
Abstract
Known to have affected around 340 million people across the world in 2018, asthma is a prevalent chronic inflammatory disease of the airways. The symptoms such as wheezing, dyspnea, chest tightness, and cough reflect episodes of reversible airway obstruction. Asthma is a heterogeneous disease that varies in clinical presentation, severity, and pathobiology, but consistently features airway hyperresponsiveness (AHR)—excessive airway narrowing due to an exaggerated response of the airways to various stimuli. Airway smooth muscle (ASM) is the major effector of exaggerated airway narrowing and AHR and many factors may contribute to its altered function in asthma. These include genetic predispositions, early life exposure to viruses, pollutants and allergens that lead to chronic exposure to inflammatory cells and mediators, altered innervation, airway structural cell remodeling, and airway mechanical stress. Early studies aiming to address the dysfunctional nature of ASM in the etiology and pathogenesis of asthma have been inconclusive due to the methodological limitations in assessing the intrapulmonary airways, the site of asthma. The study of the trachealis, although convenient, has been misleading as it has shown no alterations in asthma and it is not as exposed to inflammatory cells as intrapulmonary ASM. Furthermore, the cartilage rings offer protection against stress and strain of repeated contractions. More recent strategies that allow for the isolation of viable intrapulmonary ASM tissue reveal significant mechanical differences between asthmatic and non-asthmatic tissues. This review will thus summarize the latest techniques used to study ASM mechanics within its environment and in isolation, identify the potential causes of the discrepancy between the ASM of the extra- and intrapulmonary airways, and address future directions that may lead to an improved understanding of ASM hypercontractility in asthma.
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Affiliation(s)
- Dora (Jun Ping) Xiong
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Medicine, McGill University, Montreal, QC, Canada
| | - James G. Martin
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Medicine, McGill University, Montreal, QC, Canada
| | - Anne-Marie Lauzon
- Meakins-Christie Laboratories, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Medicine, McGill University, Montreal, QC, Canada
- *Correspondence: Anne-Marie Lauzon,
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Wicher SA, Roos BB, Teske JJ, Fang YH, Pabelick C, Prakash YS. Aging increases senescence, calcium signaling, and extracellular matrix deposition in human airway smooth muscle. PLoS One 2021; 16:e0254710. [PMID: 34324543 PMCID: PMC8321097 DOI: 10.1371/journal.pone.0254710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 07/01/2021] [Indexed: 12/23/2022] Open
Abstract
Lung function declines as people age and their lungs become stiffer. With an increasing elderly population, understanding mechanisms that contribute to these structural and functional changes in the aging lung is important. Part of the aging process is characterized by thicker, more fibrotic airways, and senile emphysema caused by changes in lung parenchyma. There is also senescence, which occurs throughout the body with aging. Here, using human airway smooth muscle (ASM) cells from patients in different age groups, we explored senescence pathways and changes in intracellular calcium signaling and extracellular matrix (ECM) deposition to elucidate potential mechanisms by which aging leads to thicker and stiffer lungs. Senescent markers p21, γH2AX, and β-gal, and some senescence-associated secretory proteins (SASP) increased with aging, as shown by staining and biochemical analyses. Agonist-induced intracellular Ca2+ responses, measured using fura-2 loaded cells and fluorescence imaging, increased with age. However, biochemical analysis showed that expression of the following markers decreased with age: M3 muscarinic receptor, TRPC3, Orai1, STIM1, SERCA2, MMP2 and MMP9. In contrast, collagen III, and fibronectin deposition increased with age. These data show that senescence increases in the aging airways that is associated with a stiffer but surprisingly greater intracellular calcium signaling as a marker for contractility. ASM senescence may enhance fibrosis in a feed forward loop promoting remodeling and altered calcium storage and buffering.
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Affiliation(s)
- Sarah A. Wicher
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States of America
| | - Benjamin B. Roos
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States of America
| | - Jacob J. Teske
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States of America
| | - Yun Hua Fang
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States of America
| | - Christina Pabelick
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States of America
| | - Y. S. Prakash
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, United States of America
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States of America
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7
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Gebski EB, Anaspure O, Panettieri RA, Koziol-White CJ. Airway smooth muscle and airway hyperresponsiveness in asthma - mechanisms of airway smooth muscle dysfunction. Minerva Med 2021; 113:4-16. [PMID: 33496164 DOI: 10.23736/s0026-4806.21.07283-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Eric B Gebski
- Drexel College of Arts and Sciences, Drexel University, Philadelphia, PA, USA
| | - Omkar Anaspure
- Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, NJ, USA
| | - Reynold A Panettieri
- Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, NJ, USA
| | - Cynthia J Koziol-White
- Rutgers Institute for Translational Medicine and Science, Rutgers University, New Brunswick, NJ, USA -
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8
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Franova S, Molitorisova M, Kazimierova I, Joskova M, Forsberg CIN, Novakova E, Sutovska M. Pharmacodynamic evaluation of dihydroxyflavone derivate chrysin in a guinea pig model of allergic asthma. J Pharm Pharmacol 2020; 73:233-240. [PMID: 33793800 DOI: 10.1093/jpp/rgaa008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 10/05/2020] [Indexed: 01/29/2023]
Abstract
OBJECTIVE This experimental study evaluated the anti-asthmatic capacity of the dihydroxyflavone chrysin in the settings of ovalbumin (OVA)-induced allergic inflammation. METHODS The parameters that were used to assess the anti-asthmatic activity of chrysin included the specific airway resistance to histamine, the sensitivity to a chemically induced cough and the activity of chrysin on the ciliary beat frequency (CBF) of the respiratory epithelium. The anti-inflammatory potential was confirmed by the measurement of cytokine concentrations Th2 (IL-4, IL-5 and IL-13), Th1 (Granulocyte-macrophage colony-stimulating factor [GM-CSF], INF-γ and IL-12), leucocyte count in the bronchoalveolar lavage fluid (BALF) and growth factor TBF-β1 in lung homogenate. KEY FINDINGS Chronic administration of chrysin (30 mg/kg/day for 21 days) to OVA-sensitised guinea pigs showed bronchodilatory activity comparable to that of long-acting β 2 receptors agonist (LABA) salmeterol. Chrysin revealed antitussive efficiency but was not able to abolish the negative effect of OVA on CBF. Chrysin managed to ameliorate the progression of chronic airway inflammation by decreasing the count of eosinophils, lymphocytes and basophils, IL-5, L-13, GM-CSF, INF-γ in BALF, and TGF-β1 in lung homogenate. CONCLUSIONS The acquired results support the complex anti-asthmatic profile of chrysin. The flavone may represent an attractive compound for further studies concerning the prevention or treatment of asthma.
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Affiliation(s)
- Sona Franova
- Department of Pharmacology, Jessenius Faculty of Medicine in Martin, Comenius University Bratislava, Martin, Slovakia
| | - Miroslava Molitorisova
- Department of Pharmacology, Jessenius Faculty of Medicine in Martin, Comenius University Bratislava, Martin, Slovakia
| | - Ivana Kazimierova
- Biomedical Center Martin Jessenius Faculty of Medicine in Martin, Comenius University Bratislava, Martin, Slovakia
| | - Marta Joskova
- Department of Pharmacology, Jessenius Faculty of Medicine in Martin, Comenius University Bratislava, Martin, Slovakia
| | - Christina Imnoy Noss Forsberg
- Department of Pharmacology, Jessenius Faculty of Medicine in Martin, Comenius University Bratislava, Martin, Slovakia
| | - Elena Novakova
- Department of Microbiology and Immunology, Jessenius Faculty of Medicine in Martin, Comenius University Bratislava, Martin, Slovakia
| | - Martina Sutovska
- Department of Pharmacology, Jessenius Faculty of Medicine in Martin, Comenius University Bratislava, Martin, Slovakia
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Chiba Y, Matsumoto M, Hanazaki M, Sakai H. Downregulation of miR-140-3p Contributes to Upregulation of CD38 Protein in Bronchial Smooth Muscle Cells. Int J Mol Sci 2020; 21:E7982. [PMID: 33121100 PMCID: PMC7663226 DOI: 10.3390/ijms21217982] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 12/18/2022] Open
Abstract
In allergic bronchial asthma, an increased smooth muscle contractility of the airways is one of the causes of the airway hyperresponsiveness (AHR). Increasing evidence also suggests a possible involvement of microRNAs (miRNAs) in airway diseases, including asthma, although their roles in function and pathology largely unknown. The current study aimed to determine the role of a miRNA, miR-140-3p, in the control of protein expression of CD38, which is believed to regulate the contraction of smooth muscles, including the airways. In bronchial smooth muscles (BSMs) of the mice that were actively sensitized and repeatedly challenged with ovalbumin antigen, an upregulation of CD38 protein concurrently with a significant reduction of miR-140-3p was observed. In cultured human BSM cells (hBSMCs), transfection with a synthetic miR-140-3p inhibitor caused an increase in CD38 protein, indicating that its basal protein expression is regulated by endogenous miR-140-3p. Treatment of the hBSMCs with interleukin-13 (IL-13), an asthma-related cytokine, caused both an upregulation of CD38 protein and a downregulation of miR-140-3p. Transfection of the hBSMCs with miR-140-3p mimic inhibited the CD38 protein upregulation induced by IL-13. On the other hand, neither a CD38 product cyclic ADP-ribose (cADPR) nor its antagonist 8-bromo-cADPR had an effect on the BSM contraction even in the antigen-challenged mice. Taken together, the current findings suggest that the downregulation of miR-140-3p induced by IL-13 might cause an upregulation of CD38 protein in BSM cells of the disease, although functional and pathological roles of the upregulated CD38 are still unclear.
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Affiliation(s)
- Yoshihiko Chiba
- Laboratory of Molecular Biology and Physiology, School of Pharmacy, Hoshi University, Tokyo 142-8501, Japan; (M.M.); (M.H.)
| | - Mayumi Matsumoto
- Laboratory of Molecular Biology and Physiology, School of Pharmacy, Hoshi University, Tokyo 142-8501, Japan; (M.M.); (M.H.)
| | - Motohiko Hanazaki
- Laboratory of Molecular Biology and Physiology, School of Pharmacy, Hoshi University, Tokyo 142-8501, Japan; (M.M.); (M.H.)
- Department of Anesthesiology and Intensive Care Medicine, School of Medicine, International University of Health and Welfare, Chiba 286-8686, Japan
| | - Hiroyasu Sakai
- Laboratory of Biomolecular Pharmacology, School of Pharmacy, Hoshi University, Tokyo 142-8501, Japan;
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Abstract
This article will discuss in detail the pathophysiology of asthma from the point of view of lung mechanics. In particular, we will explain how asthma is more than just airflow limitation resulting from airway narrowing but in fact involves multiple consequences of airway narrowing, including ventilation heterogeneity, airway closure, and airway hyperresponsiveness. In addition, the relationship between the airway and surrounding lung parenchyma is thought to be critically important in asthma, especially as related to the response to deep inspiration. Furthermore, dynamic changes in lung mechanics over time may yield important information about asthma stability, as well as potentially provide a window into future disease control. All of these features of mechanical properties of the lung in asthma will be explained by providing evidence from multiple investigative methods, including not only traditional pulmonary function testing but also more sophisticated techniques such as forced oscillation, multiple breath nitrogen washout, and different imaging modalities. Throughout the article, we will link the lung mechanical features of asthma to clinical manifestations of asthma symptoms, severity, and control. © 2020 American Physiological Society. Compr Physiol 10:975-1007, 2020.
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Affiliation(s)
- David A Kaminsky
- University of Vermont Larner College of Medicine, Burlington, Vermont, USA
| | - David G Chapman
- University of Technology Sydney, Sydney, New South Wales, Australia
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11
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Zuo W, Liu N, Zeng Y, Liu Y, Li B, Wu K, Xiao Y, Liu Q. CD38: A Potential Therapeutic Target in Cardiovascular Disease. Cardiovasc Drugs Ther 2020; 35:815-828. [PMID: 32472237 DOI: 10.1007/s10557-020-07007-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Substantial research has demonstrated the association between cardiovascular disease and the dysregulation of intracellular calcium, ageing, reduction in nicotinamide adenine dinucleotide NAD+ content, and decrease in sirtuin activity. CD38, which comprises the soluble type, type II, and type III, is the main NADase in mammals. This molecule catalyses the production of cyclic adenosine diphosphate ribose (cADPR), nicotinic acid adenine dinucleotide phosphate (NAADP), and adenosine diphosphate ribose (ADPR), which stimulate the release of Ca2+, accompanied by NAD+ consumption and decreased sirtuin activity. Therefore, the relationship between cardiovascular disease and CD38 has been attracting increased attention. In this review, we summarize the structure, regulation, function, targeted drug development, and current research on CD38 in the cardiac context. More importantly, we provide original views about the as yet elusive mechanisms of CD38 action in certain cardiovascular disease models. Based on our review, we predict that CD38 may serve as a novel therapeutic target in cardiovascular disease in the future.
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Affiliation(s)
- Wanyun Zuo
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Na Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Yunhong Zeng
- Department of Cardiology, Hunan Children's Hospital, No. 86 Ziyuan Road, Yuhua District, Changsha, 410007, Hunan, China
| | - Yaozhong Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Biao Li
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Keke Wu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China
| | - Yunbin Xiao
- Department of Cardiology, Hunan Children's Hospital, No. 86 Ziyuan Road, Yuhua District, Changsha, 410007, Hunan, China.
| | - Qiming Liu
- Department of Cardiovascular Medicine, The Second Xiangya Hospital of Central South University, No. 139 Middle Renmin Road, Furong District, Changsha, 410011, Hunan, China.
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Guedes AG, Dileepan M, Jude JA, Deshpande DA, Walseth TF, Kannan MS. Role of CD38/cADPR signaling in obstructive pulmonary diseases. Curr Opin Pharmacol 2020; 51:29-33. [PMID: 32480246 DOI: 10.1016/j.coph.2020.04.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 04/06/2020] [Accepted: 04/22/2020] [Indexed: 02/08/2023]
Abstract
The worldwide socioeconomical burden associated with chronic respiratory diseases is substantial. Enzymes involved in the metabolism of nicotinamide adenine dinucleotide (NAD) are increasingly being implicated in chronic airway diseases. One such enzyme, CD38, utilizes NAD to produce several metabolites, including cyclic ADP ribose (cADPR), which is involved in calcium signaling in airway smooth muscle (ASM). Upregulation of CD38 in ASM caused by exposure to cytokines or allergens leads to enhanced calcium mobilization by agonists and the development of airway hyperresponsiveness (AHR) to contractile agonists. Glucocorticoids and microRNAs can suppress CD38 expression in ASM, whereas cADPR antagonists such as 8Br-cADPR can directly antagonize intracellular calcium mobilization. Bronchodilators act via CD38-independent mechanisms. CD38-dependent mechanisms could be developed for chronic airway diseases therapy.
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Affiliation(s)
- Alonso Gp Guedes
- Departments of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States.
| | - Mythili Dileepan
- Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States
| | - Joseph A Jude
- Department of Pharmacology & Toxicology, Ernest Mario School of Pharmacy, Rutgers University, New Brunswick, NJ, United States
| | - Deepak A Deshpande
- Department of Medicine, Thomas Jefferson University, Philadelphia, PA, United States
| | - Timothy F Walseth
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, MN, United States
| | - Mathur S Kannan
- Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States
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13
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Delmotte P, Sieck GC. Endoplasmic Reticulum Stress and Mitochondrial Function in Airway Smooth Muscle. Front Cell Dev Biol 2020; 7:374. [PMID: 32010691 PMCID: PMC6974519 DOI: 10.3389/fcell.2019.00374] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 12/16/2019] [Indexed: 12/16/2022] Open
Abstract
Inflammatory airway diseases such as asthma affect more than 300 million people world-wide. Inflammation triggers pathophysiology via such as tumor necrosis factor α (TNFα) and interleukins (e.g., IL-13). Hypercontraction of airway smooth muscle (ASM) and ASM cell proliferation are major contributors to the exaggerated airway narrowing that occurs during agonist stimulation. An emergent theme in this context is the role of inflammation-induced endoplasmic reticulum (ER) stress and altered mitochondrial function including an increase in the formation of reactive oxygen species (ROS). This may establish a vicious cycle as excess ROS generation leads to further ER stress. Yet, it is unclear whether inflammation-induced ROS is the major mechanism leading to ER stress or the consequence of ER stress. In various diseases, inflammation leads to an increase in mitochondrial fission (fragmentation), associated with reduced levels of mitochondrial fusion proteins, such as mitofusin 2 (Mfn2). Mitochondrial fragmentation may be a homeostatic response since it is generally coupled with mitochondrial biogenesis and mitochondrial volume density thereby reducing demand on individual mitochondrion. ER stress is triggered by the accumulation of unfolded proteins, which induces a homeostatic response to alter protein balance via effects on protein synthesis and degradation. In addition, the ER stress response promotes protein folding via increased expression of molecular chaperone proteins. Reduced Mfn2 and altered mitochondrial dynamics may not only be downstream to ER stress but also upstream such that a reduction in Mfn2 triggers further ER stress. In this review, we summarize the current understanding of the link between inflammation-induced ER stress and mitochondrial function and the role played in the pathophysiology of inflammatory airway diseases.
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Affiliation(s)
- Philippe Delmotte
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
| | - Gary C Sieck
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, United States
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14
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Du J, Gao R, Wang Y, Nguyen T, Yang F, Shi Y, Liu T, Liao W, Li R, Zhang F, Ge X, Zhao B. MicroRNA-26a/b have protective roles in oral lichen planus. Cell Death Dis 2020; 11:15. [PMID: 31907356 PMCID: PMC6944705 DOI: 10.1038/s41419-019-2207-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 12/11/2019] [Accepted: 12/12/2019] [Indexed: 12/19/2022]
Abstract
Oral lichen planus (OLP) is a kind of oral epithelial disorder featured with keratinocyte apoptosis and inflammatory reaction. The pathogenesis of OLP remains an enigma. Herein, we showed that the levels of miR-26a/b were robustly down-regulated in oral mucosal biopsies, serum and saliva in OLP patients compared with healthy control. Moreover, we found the binding sites of vitamin D receptor (VDR) in the promoter regions of miR-26a/b genes and proved that the induction of miR-26a/b was VDR dependent. The reduction of miR-26a/b expression was also detected in the oral epithelium of vitamin D deficient or VDR knockout mice. miR-26a/b inhibitors enhanced apoptosis and Type 1T helper (Th1) cells-related cytokines production in oral keratinocytes, whereas miR-26a/b mimics were protective. Mechanistically, we analyzed miRNA target genes and confirmed that miR-26a/b blocked apoptosis by directly targeting Protein Kinase C δ (PKCδ) which promotes cellular apoptotic processes. Meanwhile, miR-26a/b suppressed Th1-related cytokines secretion through targeting cluster of the differentiation 38 (CD38). In accordant with miR-26a/b decreases, PKCδ and CD38 levels were highly elevated in OLP patients’ samples. Taken together, our present investigations suggest that vitamin D/VDR-induced miR-26a/b take protective functions in OLP via both inhibiting apoptosis and impeding inflammatory response in oral keratinocytes.
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Affiliation(s)
- Jie Du
- Department of Oral Medicine, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China. .,Institute of Biomedical Research, Shanxi Medical University, Taiyuan, Shanxi, China.
| | - Ruifang Gao
- Department of Oral Medicine, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Yimei Wang
- Department of Endodontics, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Tivoli Nguyen
- Division of Biological Sciences, Department of Medicine, The University of Chicago, Chicago, IL, USA
| | - Fang Yang
- Department of Periodontics, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Yongyan Shi
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Tianjing Liu
- Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Wang Liao
- Department of Cardiology, Hainan General Hospital, Hainan Clinical Medicine Research Institution, Haikou, China
| | - Ran Li
- Department of Oral Medicine, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Fang Zhang
- Department of Oral Medicine, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Xuejun Ge
- Department of Periodontics, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China
| | - Bin Zhao
- Department of Oral Medicine, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China. .,Department of prosthodontics, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi, China.
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15
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Sieck GC, Dogan M, Young‐Soo H, Osorio Valencia S, Delmotte P. Mechanisms underlying TNFα-induced enhancement of force generation in airway smooth muscle. Physiol Rep 2019; 7:e14220. [PMID: 31512410 PMCID: PMC6739507 DOI: 10.14814/phy2.14220] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/29/2019] [Accepted: 08/05/2019] [Indexed: 11/24/2022] Open
Abstract
Airway diseases such as asthma are triggered by inflammation and mediated by proinflammatory cytokines such as tumor necrosis factor alpha (TNFα). Our goal was to systematically examine the potential mechanisms underlying the effect of TNFα on airway smooth muscle (ASM) contractility. Porcine ASM strips were incubated for 24 h with and without TNFα. Exposure to TNFα increased maximum ASM force in response to acetylcholine (Ach), with an increase in ACh sensitivity (hyperreactivity), as reflected by a leftward shift in the dose-response curve (EC50 ). At the EC50 , the [Ca2+ ]cyt response to ACh was similar between TNFα and control ASM, while force increased; thus, Ca2+ sensitivity appeared to increase. Exposure to TNFα increased the basal level of regulatory myosin light chain (rMLC) phosphorylation in ASM; however, the ACh-dependent increase in rMLC phosphorylation was blunted by TNFα with no difference in the extent of rMLC phosphorylation at the EC50 ACh concentration. In TNFα-treated ASM, total actin and myosin heavy chain concentrations increased. TNFα exposure also enhanced the ACh-dependent polymerization of G- to F-actin. The results of this study confirm TNFα-induced hyperreactivity to ACh in porcine ASM. We conclude that the TNFα-induced increase in ASM force, cannot be attributed to an enhanced [Ca2+ ]cyt response or to an increase in rMLC phosphorylation. Instead, TNFα increases Ca2+ sensitivity of ASM force generation due to increased contractile protein content (greater number of contractile units) and enhanced cytoskeletal remodeling (actin polymerization) resulting in increased tethering of contractile elements to the cortical cytoskeleton and force translation to the extracellular matrix.
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Affiliation(s)
- Gary C. Sieck
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesota
| | - Murat Dogan
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesota
| | - Han Young‐Soo
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesota
| | - Sara Osorio Valencia
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesota
| | - Philippe Delmotte
- Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesota
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16
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Eraslan E, Tanyeli A, Polat E, Polat E. 8-Br-cADPR, a TRPM2 ion channel antagonist, inhibits renal ischemia-reperfusion injury. J Cell Physiol 2018; 234:4572-4581. [PMID: 30191993 DOI: 10.1002/jcp.27236] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 08/24/2018] [Indexed: 01/25/2023]
Abstract
The transient receptor potential melastatin-2 (TRPM2) channel belongs to the transient receptor potential channel superfamily and is a cation channel permeable to Na+ and Ca 2+ . The TRPM2 ion channel is expressed in the kidney and can be activated by various molecules such as hydrogen peroxide, calcium, and cyclic adenosine diphosphate (ADP)-ribose (cADPR) that are produced during acute kidney injury. In this study, we investigated the role of 8-bromo-cyclic ADP-ribose (8-Br-cADPR; a cADPR antagonist) in renal ischemia-reperfusion injury using biochemical and histopathological parameters. CD38, cADPR, tumor necrosis factor-α, interleukin-1β, and myeloperoxidase (inflammatory markers), urea and creatinine, hydrogen peroxide (oxidant), and catalase (antioxidant enzyme) levels that increase with ischemia-reperfusion injury decreased in the groups treated with 8-Br-cADPR. In addition, renin levels were elevated in the groups treated with 8-Br-cADPR. Histopathological examination revealed that 8-Br-cADPR reduced renal damage and the expression of caspase-3 and TRPM2. Our results suggest that the inhibition of TRPM2 ion channel may be a new treatment modality for ischemic acute kidney injury.
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Affiliation(s)
- Ersen Eraslan
- Department of Physiology, Faculty of Medicine, University of Bozok, Yozgat, Turkey
| | - Ayhan Tanyeli
- Department of Physiology, Faculty of Medicine, University of Atatürk, Erzurum, Turkey
| | - Elif Polat
- Department of Biochemistry, Faculty of Medicine, University of Atatürk, Erzurum, Turkey
| | - Elif Polat
- Department of Histology and Embryology, Faculty of Medicine, University of Namık Kemal, Tekirdağ, Turkey
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17
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CD38/cADPR Signaling Pathway in Airway Disease: Regulatory Mechanisms. Mediators Inflamm 2018; 2018:8942042. [PMID: 29576747 PMCID: PMC5821947 DOI: 10.1155/2018/8942042] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 12/26/2017] [Indexed: 01/08/2023] Open
Abstract
Asthma is an inflammatory disease in which proinflammatory cytokines have a role in inducing abnormalities of airway smooth muscle function and in the development of airway hyperresponsiveness. Inflammatory cytokines alter calcium (Ca2+) signaling and contractility of airway smooth muscle, which results in nonspecific airway hyperresponsiveness to agonists. In this context, Ca2+ regulatory mechanisms in airway smooth muscle and changes in these regulatory mechanisms encompass a major component of airway hyperresponsiveness. Although dynamic Ca2+ regulation is complex, phospholipase C/inositol tris-phosphate (PLC/IP3) and CD38-cyclic ADP-ribose (CD38/cADPR) are two major pathways mediating agonist-induced Ca2+ regulation in airway smooth muscle. Altered CD38 expression or enhanced cyclic ADP-ribosyl cyclase activity associated with CD38 contributes to human pathologies such as asthma, neoplasia, and neuroimmune diseases. This review is focused on investigations on the role of CD38-cyclic ADP-ribose signaling in airway smooth muscle in the context of transcriptional and posttranscriptional regulation of CD38 expression. The specific roles of transcription factors NF-kB and AP-1 in the transcriptional regulation of CD38 expression and of miRNAs miR-140-3p and miR-708 in the posttranscriptional regulation and the underlying mechanisms of such regulation are discussed.
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18
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Pascoe CD, Obeidat M, Arsenault BA, Nie Y, Warner S, Stefanowicz D, Wadsworth SJ, Hirota JA, Jasemine Yang S, Dorscheid DR, Carlsten C, Hackett TL, Seow CY, Paré PD. Gene expression analysis in asthma using a targeted multiplex array. BMC Pulm Med 2017; 17:189. [PMID: 29228930 PMCID: PMC5725935 DOI: 10.1186/s12890-017-0545-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 11/30/2017] [Indexed: 02/08/2023] Open
Abstract
Background Gene expression changes in the structural cells of the airways are thought to play a role in the development of asthma and airway hyperresponsiveness. This includes changes to smooth muscle contractile machinery and epithelial barrier integrity genes. We used a targeted gene expression arrays to identify changes in the expression and co-expression of genes important in asthma pathology. Methods RNA was isolated from the airways of donor lungs from 12 patients with asthma (8 fatal) and 12 non-asthmatics controls and analyzed using a multiplexed, hypothesis-directed platform to detect differences in gene expression. Genes were grouped according to their role in airway dysfunction: airway smooth muscle contraction, cytoskeleton structure and regulation, epithelial barrier function, innate and adaptive immunity, fibrosis and remodeling, and epigenetics. Results Differential gene expression and gene co-expression analyses were used to identify disease associated changes in the airways of asthmatics. There was significantly decreased abundance of integrin beta 6 and Ras-Related C3 Botulinum Toxin Substrate 1 (RAC1) in the airways of asthmatics, genes which are known to play an important role in barrier function. Significantly elevated levels of Collagen Type 1 Alpha 1 (COL1A1) and COL3A1 which have been shown to modulate cell proliferation and inflammation, were found in asthmatic airways. Additionally, we identified patterns of differentially co-expressed genes related to pathways involved in virus recognition and regulation of interferon production. 7 of 8 pairs of differentially co-expressed genes were found to contain CCCTC-binding factor (CTCF) motifs in their upstream promoters. Conclusions Changes in the abundance of genes involved in cell-cell and cell-matrix interactions could play an important role in regulating inflammation and remodeling in asthma. Additionally, our results suggest that alterations to the binding site of the transcriptional regulator CTCF could drive changes in gene expression in asthmatic airways. Several asthma susceptibility loci are known to contain CTCF motifs and so understanding the role of this transcription factor may expand our understanding of asthma pathophysiology and therapeutic options. Electronic supplementary material The online version of this article (10.1186/s12890-017-0545-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Christopher D Pascoe
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada. .,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada. .,Children's Hospital Research Institute of Manitoba, 513-715 McDermot Avenue, Winnipeg, MB, R3E 3P4, Canada.
| | - Ma'en Obeidat
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
| | - Bryna A Arsenault
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
| | - Yunlong Nie
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
| | - Stephanie Warner
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
| | - Dorota Stefanowicz
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
| | - Samuel J Wadsworth
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
| | - Jeremy A Hirota
- Division of Respirology, Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - S Jasemine Yang
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
| | - Delbert R Dorscheid
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
| | - Chris Carlsten
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,UBC Department of Medicine, Division of Respirology, University of British Columbia, Vancouver, BC, Canada.,UBC Chan-Yeung Centre for Occupational and Environmental Respiratory Disease, Gordon & Leslie Diamond Health Care Centre, Vancouver General Hospital, 2775 Laurel Street, 7th floor, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,UBC School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
| | - Tillie L Hackett
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,UBC Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Chun Y Seow
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,UBC Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Peter D Paré
- UBC Institute for Heart Lung Health, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada.,UBC Department of Medicine, Division of Respirology, University of British Columbia, Vancouver, BC, Canada.,University of British Columbia Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Vancouver, BC, Canada
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19
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Zhang JY, Gong Y, Yang MR, Wu J, Li ST. Effect of acute peritonitis on rocuronium-induced intraperitoneal pressure reduction and the uptake function of the sarcoplasmic reticulum. Exp Ther Med 2017; 13:2707-2714. [PMID: 28587334 PMCID: PMC5450654 DOI: 10.3892/etm.2017.4328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 01/26/2017] [Indexed: 11/09/2022] Open
Abstract
Previous studies have reported the incomplete relaxation effect of neuromuscular blockers on skeletal muscles in acute peritonitis (AP) and other inflammatory processes; however, the underlying mechanisms responsible for this effect have not yet been satisfactorily identified. The impaired removal of cytosolic Ca2+ through sarcoendoplasmic Ca2+-ATPase (SERCA) and defects in sarcoplasmic reticulum (SR) Ca2+ uptake are the major contributing factors to diastolic dysfunction. Previous studies on the effects of neuromuscular blockers have primarily focused on neuromuscular transmission. Because of the reduced calcium uptake in the SR itself, even when neuromuscular transmission is fully blocked, the muscle is not able to relax effectively. In the present study, the impact of AP on rocuronium-induced intraperitoneal pressure reduction and rectus abdominal muscle relaxation, and SERCA uptake function was investigated. AP was induced via gastric perforation and changes in the intraperitoneal pressure before and after the administration of rocuronium were recorded. Muscle contractile properties, uptake and release functions and SERCA activity in the rectus abdominal muscles of AP model rats were measured. The half-relaxation time in the AP group was significantly prolonged compared with that in the control group (P<0.01). The peak rate of SR Ca2+ uptake for whole muscle homogenates was significantly reduced (P<0.05) in AP model rats without reduction of the rate of Ca2+ release evoked through AgNO3. In conclusion, gastric perforation-induced AP attenuates the intraperitoneal pressure-reducing effect of rocuronium, and AP induces diastolic dysfunction of the rectus abdominal muscle. The SR Ca2+-ATPase uptake rate was also reduced by AP.
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20
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Peng QY, Zou Y, Zhang LN, Ai ML, Liu W, Ai YH. Blocking Cyclic Adenosine Diphosphate Ribose-mediated Calcium Overload Attenuates Sepsis-induced Acute Lung Injury in Rats. Chin Med J (Engl) 2017; 129:1725-30. [PMID: 27411462 PMCID: PMC4960964 DOI: 10.4103/0366-6999.185854] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Background: Acute lung injury (ALI) is a common complication of sepsis that is associated with high mortality. Intracellular Ca2+ overload plays an important role in the pathophysiology of sepsis-induced ALI, and cyclic adenosine diphosphate ribose (cADPR) is an important regulator of intracellular Ca2+ mobilization. The cluster of differentiation 38 (CD38)/cADPR pathway has been found to play roles in multiple inflammatory processes but its role in sepsis-induced ALI is still unknown. This study aimed to investigate whether the CD38/cADPR signaling pathway is activated in sepsis-induced ALI and whether blocking cADPR-mediated calcium overload attenuates ALI. Methods: Septic rat models were established by cecal ligation and puncture (CLP). Rats were divided into the sham group, the CLP group, and the CLP+ 8-bromo-cyclic adenosine diphosphate ribose (8-Br-cADPR) group. Nicotinamide adenine dinucleotide (NAD+), cADPR, CD38, and intracellular Ca2+ levels in the lung tissues were measured at 6, 12, 24, and 48 h after CLP surgery. Lung histologic injury, tumor necrosis factor (TNF)-α, malondialdehyde (MDA) levels, and superoxide dismutase (SOD) activities were measured. Results: NAD+, cADPR, CD38, and intracellular Ca2+ levels in the lungs of septic rats increased significantly at 24 h after CLP surgery. Treatment with 8-Br-cADPR, a specific inhibitor of cADPR, significantly reduced intracellular Ca2+ levels (P = 0.007), attenuated lung histological injury (P = 0.023), reduced TNF-α and MDA levels (P < 0.001 and P = 0.002, respectively) and recovered SOD activity (P = 0.031) in the lungs of septic rats. Conclusions: The CD38/cADPR pathway is activated in the lungs of septic rats, and blocking cADPR-mediated calcium overload with 8-Br-cADPR protects against sepsis-induced ALI.
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Affiliation(s)
- Qian-Yi Peng
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yu Zou
- Department of Anesthesia, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Li-Na Zhang
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Mei-Lin Ai
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Wei Liu
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yu-Hang Ai
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
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21
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Chen J, Sysol JR, Singla S, Zhao S, Yamamura A, Valdez-Jasso D, Abbasi T, Shioura KM, Sahni S, Reddy V, Sridhar A, Gao H, Torres J, Camp SM, Tang H, Ye SQ, Comhair S, Dweik R, Hassoun P, Yuan JXJ, Garcia JGN, Machado RF. Nicotinamide Phosphoribosyltransferase Promotes Pulmonary Vascular Remodeling and Is a Therapeutic Target in Pulmonary Arterial Hypertension. Circulation 2017; 135:1532-1546. [PMID: 28202489 DOI: 10.1161/circulationaha.116.024557] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 02/06/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Pulmonary arterial hypertension is a severe and progressive disease, a hallmark of which is pulmonary vascular remodeling. Nicotinamide phosphoribosyltransferase (NAMPT) is a cytozyme that regulates intracellular nicotinamide adenine dinucleotide levels and cellular redox state, regulates histone deacetylases, promotes cell proliferation, and inhibits apoptosis. We hypothesized that NAMPT promotes pulmonary vascular remodeling and that inhibition of NAMPT could attenuate pulmonary hypertension. METHODS Plasma, mRNA, and protein levels of NAMPT were measured in the lungs and isolated pulmonary artery endothelial cells from patients with pulmonary arterial hypertension and in the lungs of rodent models of pulmonary hypertension. Nampt+/- mice were exposed to 10% hypoxia and room air for 4 weeks, and the preventive and therapeutic effects of NAMPT inhibition were tested in the monocrotaline and Sugen hypoxia models of pulmonary hypertension. The effects of NAMPT activity on proliferation, migration, apoptosis, and calcium signaling were tested in human pulmonary artery smooth muscle cells. RESULTS Plasma and mRNA and protein levels of NAMPT were increased in the lungs and isolated pulmonary artery endothelial cells from patients with pulmonary arterial hypertension, as well as in lungs of rodent models of pulmonary hypertension. Nampt+/- mice were protected from hypoxia-mediated pulmonary hypertension. NAMPT activity promoted human pulmonary artery smooth muscle cell proliferation via a paracrine effect. In addition, recombinant NAMPT stimulated human pulmonary artery smooth muscle cell proliferation via enhancement of store-operated calcium entry by enhancing expression of Orai2 and STIM2. Last, inhibition of NAMPT activity attenuated monocrotaline and Sugen hypoxia-induced pulmonary hypertension in rats. CONCLUSIONS Our data provide evidence that NAMPT plays a role in pulmonary vascular remodeling and that its inhibition could be a potential therapeutic target for pulmonary arterial hypertension.
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Affiliation(s)
- Jiwang Chen
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Justin R Sysol
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Sunit Singla
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Shuangping Zhao
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Aya Yamamura
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Daniela Valdez-Jasso
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Taimur Abbasi
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Krystyna M Shioura
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Sakshi Sahni
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Vamsi Reddy
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Arvind Sridhar
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Hui Gao
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Jaime Torres
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Sara M Camp
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Haiyang Tang
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Shui Q Ye
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Suzy Comhair
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Raed Dweik
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Paul Hassoun
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Jason X-J Yuan
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.)
| | - Joe G N Garcia
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.).
| | - Roberto F Machado
- From Division of Pulmonary, Critical Care Medicine, Sleep and Allergy, Department of Medicine (J.C., J.R.S., S.S., S.Z., A.Y., T.A., K.M.S., S.S., V.R., A.S., H.G., J.T., R.F.M.), Department of Pharmacology (J.R.S., R.F.M.), and Department of Bioengineering (A.V.-J., T.A.), University of Illinois at Chicago; Institute of Precision Medicine, Jining Medical University, China (J.C.); Department of Pharmacy, College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan (A.Y.); Department of Medicine, Mercy Hospital and Medical Center, Chicago, IL (T.A.); Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (H.G.); Department of Medicine, University of Arizona, Tucson (S.M.C., H.T., J.X.-J.Y., J.G.N.G.); Department of Biomedical and Health Informatics and Department of Pediatrics, Children's Mercy Hospital and University of Missouri-Kansas City School of Medicine (S.Q.Y.); Department of Pathobiology, Lerner Research Institute, Pulmonary and Critical Care Medicine, Respiratory Institute, Cleveland Clinic, OH (S.C., R.D.); and Division of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD (P.H.).
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Chen J, Sanderson MJ. Store-operated calcium entry is required for sustained contraction and Ca 2+ oscillations of airway smooth muscle. J Physiol 2016; 595:3203-3218. [PMID: 27396568 DOI: 10.1113/jp272694] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 07/06/2016] [Indexed: 12/13/2022] Open
Abstract
KEY POINTS Airway hyper-responsiveness in asthma is driven by excessive contraction of airway smooth muscle cells (ASMCs). Agonist-induced Ca2+ oscillations underlie this contraction of ASMCs and the magnitude of this contraction is proportional to the Ca2+ oscillation frequency. Sustained contraction and Ca2+ oscillations require an influx of extracellular Ca2+ , although the mechanisms and pathways mediating this Ca2+ influx during agonist-induced ASMC contraction are not well defined. By inhibiting store-operated calcium entry (SOCE) or voltage-gated Ca2+ channels (VGCCs), we show that SOCE, rather than Ca2+ influx via VGCCs, provides the major Ca2+ entry pathway into ASMCs to sustain ASMCs contraction and Ca2+ oscillations. SOCE may therefore serve as a potential target for new bronchodilators to reduce airway hyper-responsiveness in asthma. ABSTRACT Asthma is characterized by airway hyper-responsiveness: the excessive contraction of airway smooth muscle. The extent of this airway contraction is proportional to the frequency of Ca2+ oscillations within airway smooth muscle cells (ASMCs). Sustained Ca2+ oscillations require a Ca2+ influx to replenish Ca2+ losses across the plasma membrane. Our previous studies implied store-operated calcium entry (SOCE) as the major pathway for this Ca2+ influx. In the present study, we explore this hypothesis, by examining the effects of SOCE inhibitors (GSK7975A and GSK5498A) as well as L-type voltage-gated Ca2+ channel inhibitors (nifedipine and nimodipine) on airway contraction and Ca2+ oscillations and SOCE-mediated Ca2+ influx in ASMCs within mouse precision-cut lung slices. We found that both GSK7975A and GSK5498A were able to fully relax methacholine-induced airway contraction by abolishing the Ca2+ oscillations, in a manner similar to that observed in zero extracellular Ca2+ ([Ca2+ ]e ). In addition, GSK7975A and GSK5498A inhibited increases in intracellular Ca2+ ([Ca2+ ]i ) in ASMCs with depleted Ca2+ -stores in response to increased [Ca2+ ]e , demonstrating a response consistent with the inhibition of SOCE. However, GSK7975A and GSK5498A did not reduce Ca2+ release via IP3 receptors stimulated with IP3 released from caged-IP3 . By contrast, nifedipine and nimodipine only partially reduced airway contraction, Ca2+ oscillation frequency and SOCE-mediated Ca2+ influx. These data suggest that SOCE is the major Ca2+ influx pathway for ASMCs with respect to sustaining agonist-induced airway contraction and the underlying Ca2+ oscillations. The mechanisms of SOCE may therefore form novel targets for new bronchodilators.
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Affiliation(s)
- Jun Chen
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, USA
| | - Michael J Sanderson
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, USA
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Croisier H, Tan X, Chen J, Sneyd J, Sanderson MJ, Brook BS. Ryanodine receptor sensitization results in abnormal calcium signaling in airway smooth muscle cells. Am J Respir Cell Mol Biol 2016; 53:703-11. [PMID: 25874477 DOI: 10.1165/rcmb.2014-0386oc] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Intracellular Ca(2+) dynamics of airway smooth muscle cells (ASMCs) are believed to play a major role in airway hyperresponsiveness and remodeling in asthma. Prior studies have underscored a prominent role for inositol 1,4,5-triphosphate (IP3) receptors in normal agonist-induced Ca(2+) oscillations, whereas ryanodine receptors (RyRs) appear to remain closed during such Ca(2+) oscillations, which mediate ASMC contraction. Nevertheless, RyRs have been hypothesized to play a role in hyperresponsive Ca(2+) signaling. This could be explained by RyRs being "sensitized" to open more frequently by certain compounds. We investigate the implications of RyR sensitization on Ca(2+) dynamics in ASMC using a combination of mathematical modeling and experiments with mouse precision-cut lung slices. Caffeine is used to increase the sensitivity of RyRs to cytosolic Ca(2+) concentration ([Ca(2+)]i) and sarcoplasmic reticulum Ca(2+) ([Ca(2+)]SR). In ASMCs, high caffeine concentrations (>10 mM) induce a sustained elevation of [Ca(2+)]i. Our mathematical model accounts for this by the activation of store-operated Ca(2+) entry that results from a large increase in the RyR sensitivity to [Ca(2+)]SR and the associated Ca(2+) release, which leads to a reduction of [Ca(2+)]SR. Importantly, our model also predicts that: (1) moderate RyR sensitization induces slow Ca(2+) oscillations, a result experimentally confirmed with low concentrations of caffeine; and (2) high RyR sensitization suppresses fast, agonist-induced Ca(2+) oscillations by inducing substantial store-operated Ca(2+) entry and elevated [Ca(2+)]i. These results suggest that RyR sensitization could play a role in ASMC proliferation (by inducing slow Ca(2+) oscillations) and in airway hyperresponsiveness (by inducing greater mean [Ca(2+)]i for similar levels of contractile agonist).
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Affiliation(s)
- Huguette Croisier
- 1 School of Mathematical Sciences, University of Nottingham, Nottingham, United Kingdom
| | - Xiahui Tan
- 2 Lung Inflammation and Infection Laboratory, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Jun Chen
- 3 Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts; and
| | - James Sneyd
- 4 Department of Mathematics, University of Auckland, Auckland, New Zealand
| | - Michael J Sanderson
- 3 Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts; and
| | - Bindi S Brook
- 1 School of Mathematical Sciences, University of Nottingham, Nottingham, United Kingdom
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Chapman DG, Irvin CG. Mechanisms of airway hyper-responsiveness in asthma: the past, present and yet to come. Clin Exp Allergy 2015; 45:706-19. [PMID: 25651937 DOI: 10.1111/cea.12506] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Airway hyper-responsiveness (AHR) has long been considered a cardinal feature of asthma. The development of the measurement of AHR 40 years ago initiated many important contributions to our understanding of asthma and other airway diseases. However, our understanding of AHR in asthma remains complicated by the multitude of potential underlying mechanisms which in reality are likely to have different contributions amongst individual patients. Therefore, the present review will discuss the current state of understanding of the major mechanisms proposed to contribute to AHR and highlight the way in which AHR testing is beginning to highlight distinct abnormalities associated with clinically relevant patient populations. In doing so we aim to provide a foundation by which future research can begin to ascribe certain mechanisms to specific patterns of bronchoconstriction and subsequently match phenotypes of bronchoconstriction with clinical phenotypes. We believe that this approach is not only within our grasp but will lead to improved mechanistic understanding of asthma phenotypes and we hoped to better inform the development of phenotype-targeted therapy.
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Affiliation(s)
- D G Chapman
- Woolcock Institute of Medical Research, Sydney Medical School, University of Sydney, Sydney, NSW, Australia; Department of Medicine, University of Vermont College of Medicine, Burlington, VT, USA
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Peng QY, Ai ML, Zhang LN, Zou Y, Ma XH, Ai YH. Blocking NAD(+)/CD38/cADPR/Ca(2+) pathway in sepsis prevents organ damage. J Surg Res 2015; 201:480-9. [PMID: 27020835 DOI: 10.1016/j.jss.2015.11.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 11/15/2015] [Accepted: 11/20/2015] [Indexed: 12/28/2022]
Abstract
BACKGROUND Although the nicotinamide adenine dinucleotide (NAD(+))/CD38/cyclic ADP ribose (cADPR)/Ca(2+) signaling pathway has been shown to regulate intracellular calcium homeostasis and functions in multiple inflammatory processes, its role in sepsis remains unknown. The aim of this study was to determine whether the NAD(+)/CD38/cADPR/Ca(2+) signaling pathway is activated during sepsis and whether an inhibitor of this pathway, 8-Br-cADPR, protects the organs from sepsis-induced damage. MATERIALS AND METHODS Male Sprague-Dawley rats were subjected to cecal ligation and puncture (CLP) or sham laparotomies. NAD(+), cADPR, CD38, and intracellular Ca(2+) levels were measured in the hearts, livers, and kidneys of septic rats at 0, 6, 12, 24, and 48 h after CLP surgery. Rats were also divided into sham, CLP, and CLP+8-Br-cADPR groups, and the hearts, livers, and kidneys were hematoxylin-eosin-stained and assayed for malondialdehyde and superoxide dismutase activities. RESULTS NAD(+), cADPR, CD38, and intracellular Ca(2+) levels increased in the hearts, livers, and kidneys of septic rats as early as 6-24 h after CLP surgery. Treatment with 8-Br-cADPR inhibited sepsis-induced intracellular Ca(2+) mobilization, attenuated tissue injury, reduced malondialdehyde levels, and increased superoxide dismutase activity in septic rats. CONCLUSIONS The NAD(+)/CD38/cADPR/Ca(2+) signaling pathway was activated during sepsis in the CLP rat model. Blocking this pathway with 8-Br-cADPR protected hearts, livers, and kidneys from sepsis-induced damage.
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Affiliation(s)
- Qian-Yi Peng
- Department of Critical Care Medicine, Xiang-Ya Hospital, Central South University, Changsha, Hunan Province, China
| | - Mei-Lin Ai
- Department of Critical Care Medicine, Xiang-Ya Hospital, Central South University, Changsha, Hunan Province, China
| | - Li-Na Zhang
- Department of Critical Care Medicine, Xiang-Ya Hospital, Central South University, Changsha, Hunan Province, China
| | - Yu Zou
- Department of Anesthesia, Xiang-Ya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xin-Hua Ma
- Department of Critical Care Medicine, Xiang-Ya Hospital, Central South University, Changsha, Hunan Province, China
| | - Yu-Hang Ai
- Department of Critical Care Medicine, Xiang-Ya Hospital, Central South University, Changsha, Hunan Province, China.
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26
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Wylam ME, Sathish V, VanOosten SK, Freeman M, Burkholder D, Thompson MA, Pabelick CM, Prakash YS. Mechanisms of Cigarette Smoke Effects on Human Airway Smooth Muscle. PLoS One 2015; 10:e0128778. [PMID: 26075746 PMCID: PMC4468194 DOI: 10.1371/journal.pone.0128778] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/30/2015] [Indexed: 11/19/2022] Open
Abstract
Cigarette smoke contributes to or exacerbates airway diseases such as asthma and COPD, where airway hyperresponsiveness and airway smooth muscle (ASM) proliferation are key features. While factors such as inflammation contribute to asthma in part by enhancing agonist-induced intracellular Ca(2+) ([Ca(2+)]i) responses of ASM, the mechanisms by which cigarette smoke affect ASM are still under investigation. In the present study, we tested the hypothesis that cigarette smoke enhances the expression and function of Ca(2+) regulatory proteins leading to increased store operated Ca(2+) entry (SOCE) and cell proliferation. Using isolated human ASM (hASM) cells, incubated in the presence and absence cigarette smoke extract (CSE) we determined ([Ca(2+)]i) responses and expression of relevant proteins as well as ASM proliferation, reactive oxidant species (ROS) and cytokine generation. CSE enhanced [Ca(2+)]i responses to agonist and SOCE: effects mediated by increased expression of TRPC3, CD38, STIM1, and/or Orai1, evident by attenuation of CSE effects when siRNAs against these proteins were used, particularly Orai1. CSE also increased hASM ROS generation and cytokine secretion. In addition, we found in the airways of patients with long-term smoking history, TRPC3 and CD38 expression were significantly increased compared to life-long never-smokers, supporting the role of these proteins in smoking effects. Finally, CSE enhanced hASM proliferation, an effect confirmed by upregulation of PCNA and Cyclin E. These results support a critical role for Ca(2+) regulatory proteins and enhanced SOCE to alter airway structure and function in smoking-related airway disease.
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Affiliation(s)
- Mark E. Wylam
- Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
- Department of Pediatrics, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
- * E-mail:
| | - Venkatachalem Sathish
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
- Department of Physiology & Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Sarah Kay VanOosten
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Michelle Freeman
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - David Burkholder
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Michael A. Thompson
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Christina M. Pabelick
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
- Department of Physiology & Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
| | - Y. S. Prakash
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
- Department of Physiology & Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota, United States of America
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Guedes AGP, Deshpande DA, Dileepan M, Walseth TF, Panettieri RA, Subramanian S, Kannan MS. CD38 and airway hyper-responsiveness: studies on human airway smooth muscle cells and mouse models. Can J Physiol Pharmacol 2014; 93:145-53. [PMID: 25594684 DOI: 10.1139/cjpp-2014-0410] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Asthma is an inflammatory disease in which altered calcium regulation, contractility, and airway smooth muscle (ASM) proliferation contribute to airway hyper-responsiveness and airway wall remodeling. The enzymatic activity of CD38, a cell-surface protein expressed in human ASM cells, generates calcium mobilizing second messenger molecules such as cyclic ADP-ribose. CD38 expression in human ASM cells is augmented by cytokines (e.g., TNF-α) that requires the activation of MAP kinases and the transcription factors, NF-κB and AP-1, and is post-transcriptionally regulated by miR-140-3p and miR-708 by binding to 3' Untranslated Region of CD38 as well as by modulating the activation of signaling mechanisms involved in its regulation. Mice deficient in Cd38 exhibit reduced airway responsiveness to inhaled methacholine relative to the response in wild-type mice. Intranasal challenge of Cd38-deficient mice with TNF-α or IL-13, or the environmental fungus Alternaria alternata, causes significantly attenuated methacholine responsiveness compared with wild-type mice, with comparable airway inflammation. Reciprocal bone marrow transfer studies revealed partial restoration of airway hyper-responsiveness to inhaled methacholine in the Cd38-deficient mice. These studies provide evidence for CD38 involvement in the development of airway hyper-responsiveness; a hallmark feature of asthma. Future studies aimed at drug discovery and delivery targeting CD38 expression and (or) activity are warranted.
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Affiliation(s)
- Alonso G P Guedes
- a Department of Surgical & Radiological Sciences, University of California, Davis, CA 95616, USA
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28
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Delmotte P, Sieck GC. Interaction between endoplasmic/sarcoplasmic reticulum stress (ER/SR stress), mitochondrial signaling and Ca(2+) regulation in airway smooth muscle (ASM). Can J Physiol Pharmacol 2014; 93:97-110. [PMID: 25506723 DOI: 10.1139/cjpp-2014-0361] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Airway inflammation is a key aspect of diseases such as asthma. Several inflammatory cytokines (e.g., TNFα and IL-13) increase cytosolic Ca(2+) ([Ca(2+)]cyt) responses to agonist stimulation and Ca(2+) sensitivity of force generation, thereby enhancing airway smooth muscle (ASM) contractility (hyper-reactive state). Inflammation also induces ASM proliferation and remodeling (synthetic state). In normal ASM, the transient elevation of [Ca(2+)]cyt induced by agonists leads to a transient increase in mitochondrial Ca(2+) ([Ca(2+)]mito) that may be important in matching ATP production with ATP consumption. In human ASM (hASM) exposed to TNFα and IL-13, the transient increase in [Ca(2+)]mito is blunted despite enhanced [Ca(2+)]cyt responses. We also found that TNFα and IL-13 induce reactive oxidant species (ROS) formation and endoplasmic/sarcoplasmic reticulum (ER/SR) stress (unfolded protein response) in hASM. ER/SR stress in hASM is associated with disruption of mitochondrial coupling with the ER/SR membrane, which relates to reduced mitofusin 2 (Mfn2) expression. Thus, in hASM it appears that TNFα and IL-13 result in ROS formation leading to ER/SR stress, reduced Mfn2 expression, disruption of mitochondrion-ER/SR coupling, decreased mitochondrial Ca(2+) buffering, mitochondrial fragmentation, and increased cell proliferation.
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Affiliation(s)
- Philippe Delmotte
- Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 4-184 West Joseph SMH, 200 First Street SW, Rochester, MN 55905, USA
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29
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Thompson MA, Prakash YS, Pabelick CM. Arachidonate-regulated Ca(2+) influx in human airway smooth muscle. Am J Respir Cell Mol Biol 2014; 51:68-76. [PMID: 24471656 DOI: 10.1165/rcmb.2013-0144oc] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Plasma membrane Ca(2+) influx, especially store-operated Ca(2+) entry triggered by sarcoplasmic reticulum (SR) Ca(2+) release, is a key component of intracellular calcium concentration ([Ca(2+)]i) regulation in airway smooth muscle (ASM). Agonist-induced Ca(2+) oscillations in ASM that involve both influx and SR mechanisms have been previously demonstrated. In nonexcitable cells, [Ca(2+)]i oscillations involve Ca(2+) influx via arachidonic acid (AA) -stimulated channels, which show similarities to store-operated Ca(2+) entry, although their molecular identity remains undetermined. Little is known about AA-regulated Ca(2+) channels or their regulation in ASM. In enzymatically dissociated human ASM cells loaded with the Ca(2+) indicator, fura-2, AA (1-10 μM) triggered [Ca(2+)]i oscillations that were inhibited by removal of extracellular Ca(2+). Other fatty acids, such as the diacylglycerol analog, 1-oleoyl-2-acetyl-SN-glycerol, oleic acid, and palmitic acid (10 μM each), failed to elicit similar [Ca(2+)]i responses. Preincubation with LaCl3 (1 μM or 1 mM) inhibited AA-induced oscillations. Inhibition of receptor-operated channels (SKF96,365 [10 μM]), lipoxygenase (zileuton [10 μM]), or cyclooxygenase (indomethacin [10 μM]) did not affect oscillation parameters. Inhibition of SR Ca(2+) release (ryanodine [10 μM] or inositol 1,4,5-trisphosphate receptor inhibitor, xestospongin C [1 μM]) decreased [Ca(2+)]i oscillation frequency and amplitude. Small interfering RNA against caveolin-1, stromal interaction molecule 1, or Orai3 (20 nM each) reduced the frequency and amplitude of AA-induced [Ca(2+)]i oscillations. In ASM cells derived from individuals with asthma, AA increased oscillation amplitude, but not frequency. These results are highly suggestive of a novel AA-mediated Ca(2+)-regulatory mechanism in human ASM, reminiscent of agonist-induced oscillations. Given the role of AA in ASM intracellular signaling, especially with inflammation, AA-regulated Ca(2+) channels could potentially contribute to increased [Ca(2+)]i in diseases such asthma.
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30
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Koopmans T, Anaparti V, Castro-Piedras I, Yarova P, Irechukwu N, Nelson C, Perez-Zoghbi J, Tan X, Ward JPT, Wright DB. Ca2+ handling and sensitivity in airway smooth muscle: emerging concepts for mechanistic understanding and therapeutic targeting. Pulm Pharmacol Ther 2014; 29:108-20. [PMID: 24831539 DOI: 10.1016/j.pupt.2014.05.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 03/28/2014] [Accepted: 05/01/2014] [Indexed: 02/01/2023]
Abstract
Free calcium ions within the cytosol serve as a key secondary messenger system for a diverse range of cellular processes. Dysregulation of cytosolic Ca(2+) handling in airway smooth muscle (ASM) has been implicated in asthma, and it has been hypothesised that this leads, at least in part, to associated changes in both the architecture and function of the lung. Significant research is therefore directed towards furthering our understanding of the mechanisms which control ASM cytosolic calcium, in addition to those regulating the sensitivity of its downstream effector targets to calcium. Key aspects of the recent developments in this field were discussed at the 8th Young Investigators' Symposium on Smooth Muscle (2013, Groningen, The Netherlands), and are outlined in this review.
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Affiliation(s)
- T Koopmans
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands
| | - V Anaparti
- Department of Immunology, University of Manitoba, Winnipeg, Canada
| | - I Castro-Piedras
- Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, TX, USA
| | - P Yarova
- Cardiff School of Biosciences, Cardiff University, UK
| | - N Irechukwu
- Division of Asthma, Allergy and Lung Biology, King's College London, UK
| | - C Nelson
- School of Science & Technology, Nottingham Trent University, Nottingham, UK
| | - J Perez-Zoghbi
- Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, TX, USA
| | - X Tan
- Lung Inflammation & Infection Lab, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - J P T Ward
- Division of Asthma, Allergy and Lung Biology, King's College London, UK
| | - D B Wright
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands; Division of Asthma, Allergy and Lung Biology, King's College London, UK.
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Jia L, Delmotte P, Aravamudan B, Pabelick CM, Prakash YS, Sieck GC. Effects of the inflammatory cytokines TNF-α and IL-13 on stromal interaction molecule-1 aggregation in human airway smooth muscle intracellular Ca(2+) regulation. Am J Respir Cell Mol Biol 2014; 49:601-8. [PMID: 23713409 DOI: 10.1165/rcmb.2013-0040oc] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Inflammation elevates intracellular Ca(2+) ([Ca(2+)]i) concentrations in airway smooth muscle (ASM). Store-operated Ca(2+) entry (SOCE) is an important source of [Ca(2+)]i mediated by stromal interaction molecule-1 (STIM1), a sarcoplasmic reticulum (SR) protein. In transducing SR Ca(2+) depletion, STIM1 aggregates to form puncta, thereby activating SOCE via interactions with a Ca(2+) release-activated Ca(2+) channel protein (Orai1) in the plasma membrane. We hypothesized that STIM1 aggregation is enhanced by inflammatory cytokines, thereby augmenting SOCE in human ASM cells. We used real-time fluorescence microscopic imaging to assess the dynamics of STIM1 aggregation and SOCE after exposure to TNF-α or IL-13 in ASM cells overexpressing yellow fluorescent protein-tagged wild-type STIM1 (WT-STIM1) and STIM1 mutants lacking the Ca(2+)-sensing EF-hand (STIM1-D76A), or lacking the cytoplasmic membrane binding site (STIM1ΔK). STIM1 aggregation was analyzed by monitoring puncta size during the SR Ca(2+) depletion induced by cyclopiazonic acid (CPA). We found that puncta size was increased in cells expressing WT-STIM1 after CPA. However, STIM1-D76A constitutively formed puncta, whereas STIM1ΔK failed to form puncta. Furthermore, cytokines increased basal WT-STIM1 puncta size, and the SOCE triggered by SR Ca(2+) depletion was increased in cells expressing WT-STIM1 or STIM1-D76A. Meanwhile, SOCE in cells expressing STIM1ΔK and STIM1 short, interfering RNA (siRNA) was decreased. Similarly, in cells overexpressing STIM1, the siRNA knockdown of Orai1 blunted SOCE. However, exposure to cytokines increased SOCE in all cells, increased basal [Ca(2+)]i, and decreased SR Ca(2+) content. These data suggest that cytokines induce a constitutive increase in STIM1 aggregation that contributes to enhanced SOCE in human ASM after inflammation. Such effects of inflammation on STIM1 aggregations may contribute to airway hyperresponsiveness.
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Affiliation(s)
- Li Jia
- 1 Department of Physiology and Biomedical Engineering, and
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32
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Mapping NAD(+) metabolism in the brain of ageing Wistar rats: potential targets for influencing brain senescence. Biogerontology 2013; 15:177-98. [PMID: 24337988 DOI: 10.1007/s10522-013-9489-5] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 12/09/2013] [Indexed: 12/21/2022]
Abstract
Over the last decade, the importance of NAD(+) has expanded beyond its role as an essential cofactor for energy metabolism. NAD(+) has emerged as a major signalling molecule that serves as the sole substrate for several enzymatic reactions including the DNA repair enzyme, poly(ADP-ribose) polymerase (PARP), NAD-dependent protein deacetylases or CD38, and transcriptional factors by a new class of histone deacetylases known as sirtuins. NAD(+) levels are regulated by the metabolic status and cellular stress caused by oxidative stress and DNA damage. Since a detailed study of NAD(+) metabolism in the healthy ageing mammalian brain is nascent, we examined the effect of ageing on intracellular NAD(+) metabolism in different brain regions in female Wistar rats in young (3 months), middle aged (12 months) and older adults (24 months). Our results are the first to show a significant decline in intracellular NAD(+) levels and NAD:NADH ratio with ageing in the CNS, occurring in parallel to an increase in lipid peroxidation and protein oxidation (o- and m-tyrosine) and a decline in total antioxidant capacity. Hyperphosphorylation of H2AX levels was also observed together with increased PARP-1 and PARP-2 expression, and CD38 activity, concomitantly with reduced NAD(+) and ATP levels and SIRT1 function in the cortex, brainstem, hippocampus and cerebellum. Reduced activity of mitochondrial complex I-IV and impaired maximum mitochondrial respiration rate were also observed in the ageing rat brain. Among the multiple physiological pathways associated with NAD(+) catabolism, our discovery of CD38 as the major regulator of cellular NAD(+) levels in rat neurons indicates that CD38 is a promising therapeutic target for the treatment of age-related neurodegenerative diseases.
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Sathish V, Thompson MA, Sinha S, Sieck GC, Prakash YS, Pabelick CM. Inflammation, caveolae and CD38-mediated calcium regulation in human airway smooth muscle. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1843:346-51. [PMID: 24275509 DOI: 10.1016/j.bbamcr.2013.11.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/11/2013] [Accepted: 11/14/2013] [Indexed: 01/10/2023]
Abstract
The pro-inflammatory cytokine tumor necrosis factor-alpha (TNFα) increases expression of CD38 (a membrane-associated bifunctional enzyme regulating cyclic ADP ribose), and enhances agonist-induced intracellular Ca(2+) ([Ca(2+)]i) responses in human airway smooth muscle (ASM). We previously demonstrated that caveolae and their constituent protein caveolin-1 are important for ASM [Ca(2+)]i regulation, which is further enhanced by TNFα. Whether caveolae and CD38 are functionally linked in mediating TNFα effects is unknown. In this regard, whether the related cavin proteins (cavin-1 and -3) that maintain structure and function of caveolae play a role is also not known. In the present study, we hypothesized that TNFα effects on CD38 expression and function in human ASM involve caveolae. Caveolar fractions from isolated human ASM cells expressed CD38 and its expression was upregulated by exposure to 20ng/ml TNFα (48h). ASM cells expressed cavin-1 and cavin-3, which were also upregulated by TNFα. Knockdown of caveolin-1, cavin-1 or cavin-3 (using siRNA) all significantly reduced CD38 expression and ADP-ribosyl cyclase activity in the presence or absence of TNFα. Furthermore, caveolin-1, cavin-1 and cavin-3 siRNAs reduced [Ca(2+)]i responses to histamine under control conditions, and blunted the enhanced [Ca(2+)]i responses in TNFα-exposed cells. These data demonstrate that CD38 is expressed within caveolae and its function is linked to the caveolar regulatory proteins caveolin-1, cavin-1 and -3. The link between caveolae and CD38 is further enhanced during airway inflammation demonstrating the important role of caveolae in regulation of [Ca(2+)]i and contractility in the airway.
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Affiliation(s)
- Venkatachalem Sathish
- Departments of Anesthesiology, Mayo Clinic, Rochester, MN 55905, USA; Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Sutapa Sinha
- Departments of Anesthesiology, Mayo Clinic, Rochester, MN 55905, USA
| | - Gary C Sieck
- Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA; Departments of Anesthesiology, Mayo Clinic, Rochester, MN 55905, USA
| | - Y S Prakash
- Departments of Anesthesiology, Mayo Clinic, Rochester, MN 55905, USA; Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Christina M Pabelick
- Departments of Anesthesiology, Mayo Clinic, Rochester, MN 55905, USA; Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA.
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Croisier H, Tan X, Perez-Zoghbi JF, Sanderson MJ, Sneyd J, Brook BS. Activation of store-operated calcium entry in airway smooth muscle cells: insight from a mathematical model. PLoS One 2013; 8:e69598. [PMID: 23936056 PMCID: PMC3723852 DOI: 10.1371/journal.pone.0069598] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 06/10/2013] [Indexed: 11/30/2022] Open
Abstract
Intracellular dynamics of airway smooth muscle cells (ASMC) mediate ASMC contraction and proliferation, and thus play a key role in airway hyper-responsiveness (AHR) and remodelling in asthma. We evaluate the importance of store-operated entry (SOCE) in these dynamics by constructing a mathematical model of ASMC signaling based on experimental data from lung slices. The model confirms that SOCE is elicited upon sufficient depletion of the sarcoplasmic reticulum (SR), while receptor-operated entry (ROCE) is inhibited in such conditions. It also shows that SOCE can sustain agonist-induced oscillations in the absence of other influx. SOCE up-regulation may thus contribute to AHR by increasing the oscillation frequency that in turn regulates ASMC contraction. The model also provides an explanation for the failure of the SERCA pump blocker CPA to clamp the cytosolic of ASMC in lung slices, by showing that CPA is unable to maintain the SR empty of . This prediction is confirmed by experimental data from mouse lung slices, and strongly suggests that CPA only partially inhibits SERCA in ASMC.
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Affiliation(s)
- Huguette Croisier
- School of Mathematical Sciences, University of Nottingham, Nottingham, United Kingdom
- * E-mail:
| | - Xiahui Tan
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachussetts, United States of America
| | - Jose F. Perez-Zoghbi
- Department of Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, Lubbock, Texas, United States of America
| | - Michael J. Sanderson
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachussetts, United States of America
| | - James Sneyd
- Department of Mathematics, University of Auckland, Auckland, New Zealand
| | - Bindi S. Brook
- School of Mathematical Sciences, University of Nottingham, Nottingham, United Kingdom
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Lee JH, Zhang J, Flores L, Rose JC, Massmann GA, Figueroa JP. Antenatal betamethasone has a sex-dependent effect on the in vivo response to endothelin in adult sheep. Am J Physiol Regul Integr Comp Physiol 2013; 304:R581-7. [PMID: 23408033 PMCID: PMC3627955 DOI: 10.1152/ajpregu.00579.2012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 02/12/2013] [Indexed: 11/22/2022]
Abstract
Antenatal steroid administration is associated with multiple cardiometabolic alterations, including hypertension; however, the mechanisms underlying this phenomenon are unclear. The aim of the present study was to ascertain, in vivo, the contribution of the endothelin system to the development of hypertension in the adult offspring and the signaling pathway involved. Pregnant sheep were treated with two doses of betamethasone (n = 23) or vehicle (n = 22) at 80 days (~0.55) gestation and allowed to deliver at term. Adult sheep were chronically instrumented under general anesthesia to place vascular catheters and a femoral artery flow probe. Blood pressure and flow were recorded continuously, and femoral artery vascular resistance was calculated before and during administration of endothelin 1 (ET-1). Selective blockers (dantrolene, BQ123, niacinamide) or saline were administered simultaneously. Betamethasone-exposed animals exhibited a significant elevation in mean blood pressure (female: 98 ± 1.8 vs. 92 ± 2.1; males: 97 ± 3.4 vs. 90 ± 2.3; mmHg; P < 0.05). ET-1 elicited a significant increase in blood pressure (F = 56.4; P < 0.001) and in vascular resistance (F = 44.3; P < 0.001) in all groups. A betamethasone effect in the vascular resistance response to ET-1 (F = 25.7; P < 0.001) was present in females only, and the effect was partially blunted by niacinamide (F = 6.6; P < 0.01). Combined administration of niacinamide and BQ123, as well as of dantrolene abolished the betamethasone effect on vascular resistance. No significant differences in mRNA expression of ET(A) or ET(B) in endothelial or smooth muscle cells of resistance-size arteries were observed. We conclude that the betamethasone effect on vascular resistance is mediated by an enhanced response to ET-1 through ET(A) receptor via the cyclic ADPR/ryanodine pathway.
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Affiliation(s)
- Jeong-Heon Lee
- Perinatal Research Laboratory, Department of Obstetrics and Gynecology, Center for Research in Obstetrics and Gynecology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
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Delmotte P, Yang B, Thompson MA, Pabelick CM, Prakash YS, Sieck GC. Inflammation alters regional mitochondrial Ca²+ in human airway smooth muscle cells. Am J Physiol Cell Physiol 2012; 303:C244-56. [PMID: 22673614 DOI: 10.1152/ajpcell.00414.2011] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Regulation of cytosolic Ca(2+) concentration ([Ca(2+)](cyt)) in airway smooth muscle (ASM) is a key aspect of airway contractility and can be modulated by inflammation. Mitochondria have tremendous potential for buffering [Ca(2+)](cyt), helping prevent Ca(2+) overload, and modulating other intracellular events. Here, compartmentalization of mitochondria to different cellular regions may subserve different roles. In the present study, we examined the role of Ca(2+) buffering by mitochondria and mitochondrial Ca(2+) transport mechanisms in the regulation of [Ca(2+)](cyt) in enzymatically dissociated human ASM cells upon exposure to the proinflammatory cytokines TNF-α and IL-13. Cells were loaded simultaneously with fluo-3 AM and rhod-2 AM, and [Ca(2+)](cyt) and mitochondrial Ca(2+) concentration ([Ca(2+)](mito)) were measured, respectively, using real-time two-color fluorescence microscopy in both the perinuclear and distal, perimembranous regions of cells. Histamine induced a rapid increase in both [Ca(2+)](cyt) and [Ca(2+)](mito), with a significant delay in the mitochondrial response. Inhibition of the mitochondrial Na(+)/Ca(2+) exchanger (1 μM CGP-37157) increased [Ca(2+)](mito) responses in perinuclear mitochondria but not distal mitochondria. Inhibition of the mitochondrial uniporter (1 μM Ru360) decreased [Ca(2+)](mito) responses in perinuclear and distal mitochondria. CGP-37157 and Ru360 significantly enhanced histamine-induced [Ca(2+)](cyt). TNF-α and IL-13 both increased [Ca(2+)](cyt), which was associated with decreased [Ca(2+)](mito) in the case of TNF-α but not IL-13. The effects of TNF-α on both [Ca(2+)](cyt) and [Ca(2+)](mito) were affected by CGP-37157 but not by Ru360. Overall, these data demonstrate that in human ASM cells, mitochondria buffer [Ca(2+)](cyt) after agonist stimulation and its enhancement by inflammation. The differential regulation of [Ca(2+)](mito) in different parts of ASM cells may serve to locally regulate Ca(2+) fluxes from intracellular sources versus the plasma membrane as well as respond to differential energy demands at these sites. We propose that such differential mitochondrial regulation, and its disruption, may play a role in airway hyperreactivity in diseases such as asthma, where [Ca(2+)](cyt) is increased.
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Affiliation(s)
- Philippe Delmotte
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, USA
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Gunst SJ, Panettieri RA. Point: alterations in airway smooth muscle phenotype do/do not cause airway hyperresponsiveness in asthma. J Appl Physiol (1985) 2012; 113:837-9. [PMID: 22518830 DOI: 10.1152/japplphysiol.00483.2012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- Susan J Gunst
- Department of Cell and Integrated Physiology Indianapolis, Indiana University School of Medicine, Indiana, USA.
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Wylam ME, Xue A, Sieck GC. Mechanisms of intrinsic force in small human airways. Respir Physiol Neurobiol 2012; 181:99-108. [PMID: 22322114 DOI: 10.1016/j.resp.2012.01.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Revised: 01/24/2012] [Accepted: 01/25/2012] [Indexed: 10/14/2022]
Abstract
We quantified the magnitude and investigated mechanisms regulating intrinsic force (IF) in human airway smooth muscle (hASM). IF was identified by reducing extracellular calcium (Ca2+) concentration to nominally zero in freshly isolated isometrically mounted 2mm human bronchi. Our results show: (1) the magnitude of IF is ∼50% of the maximal total force elicited by acetylcholine (10(-5) M) and is epithelial independent, (2) IF can also be revealed by β-adrenergic activation (isoproterenol), non-specific cationic channel blockade (La3+) or L-type voltage gated Ca2+ channel blockade (nifedipine), (3) atropine, indomethacin, AA-861, or pyrilamine did not affect IF, (4) IF was reduced by the intracellular Ca2+ ([Ca2+]i) chelating agent BAPTA-AM, (5) ω-conotoxin had no effect on IF. In studies in cultured hASM cells nominally zero Ca2+ buffer and BAPTA-AM reduced [Ca2+]i but isoproterenol and nifedipine did not. Taken together these results indicate that rapid reduction of [Ca2+]i reveals a permissive relationship between extracellular Ca2+, [Ca2+]i and IF. However IF can be dissipated by mechanisms effecting Ca2+ sensitivity. We speculate that an increase of IF, a fundamental property of ASM, could be related to human airway clinical hyperresponsiveness and must be accounted for in in vitro studies of hASM.
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Affiliation(s)
- Mark E Wylam
- Division of Pulmonary and Critical Care Medicine, Departments of Medicine, Pediatrics, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
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Sodium-calcium exchange in intracellular calcium handling of human airway smooth muscle. PLoS One 2011; 6:e23662. [PMID: 21858195 PMCID: PMC3156227 DOI: 10.1371/journal.pone.0023662] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Accepted: 07/22/2011] [Indexed: 02/03/2023] Open
Abstract
Enhanced airway contractility following inflammation by cytokines such as tumor necrosis factor alpha (TNFα) or interleukin-13 (IL-13) involves increased intracellular Ca2+ ([Ca2+]i) levels in airway smooth muscle (ASM). In ASM, plasma membrane Ca2+ fluxes form a key component of [Ca2+]i regulation. There is now growing evidence that the bidirectional plasma membrane Na+/Ca2+ exchanger (NCX) contributes to ASM [Ca2+]i regulation. In the present study, we examined NCX expression and function in human ASM cells under normal conditions, and following exposure to TNFα or IL-13. Western blot analysis showed significant expression of the NCX1 isoform, with increased NCX1 levels by both cytokines, effects blunted by inhibitors of nuclear factor NF-κB or mitogen-activated protein kinase. Cytokine-mediated increase in NCX1 involved enhanced transcription followed by protein synthesis. NCX2 and NCX3 remained undetectable even in cytokine-stimulated ASM. In fura-2 loaded human ASM cells, NCX-mediated inward Ca2+ exchange as well as outward exchange (measured as rates of change in [Ca2+]i) was elicited by altering extracellular Na+ and Ca2+ levels. Contribution of NCX was verified by measuring [Na+]i using the fluorescent Na+ indicator SBFI. NCX-mediated inward exchange was verified by demonstrating prevention of rising [Ca2+]i or falling [Na+]i in the presence of the NCX inhibitor KBR7943. Inward exchange-mode NCX was increased by both TNFα and IL-13 to a greater extent than outward exchange. NCX siRNA transfection substantially blunted outward exchange and inward exchange modes. Finally, inhibition of NCX expression or function blunted peak [Ca2+]i and rate of fall of [Ca2+]i following histamine stimulation. These data suggest that NCX-mediated Ca2+ fluxes normally exist in human ASM (potentially contributing to rapid Ca2+ fluxes), and contribute to enhanced [Ca2+]i regulation in airway inflammation.
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Molecular expression and functional role of canonical transient receptor potential channels in airway smooth muscle cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 704:731-47. [PMID: 21290324 DOI: 10.1007/978-94-007-0265-3_38] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Multiple canonical or classic transient receptor potential (TRPC) molecules are expressed in animal and human airway smooth muscle cells (SMCs). TRPC3, but not TRPC1, is a major molecular component of native non-selective cation channels (NSCCs) to contribute to the resting [Ca(2+)](i) and muscarinic increase in [Ca(2+)](i) in freshly isolated airway SMCs. TRPC3-encoded NSCCs are significantly increased in expression and activity in airway SMCs from ovalbumin-sensitized/challenged "asthmatic" mice, whereas TRPC1-encoded channel activity, but not its expression, is largely augmented. The upregulated TRPC3- and TRPC1-encoded NSCC activity both mediate "asthmatic" membrane depolarization in airway SMCs. Supportively, tumor necrosis factor-α (TNFα), an important asthma mediator, increases TRPC3 expression, and TRPC3 gene silencing inhibits TNFα-mediated augmentation of acetylcholine-evoked increase in [Ca(2+)](i) in passaged airway SMCs. In contrast, TRPC6 gene silencing has no effect on 1-oleoyl-2-acetyl-sn-glycerol (OAG)-evoked increase in [Ca(2+)](i) in primary isolated cells. These findings provide compelling information indicating that TRPC3-encoded NSCCs are important for physiological and pathological cellular responses in airway SMCs. However, continual studies are necessary to further determine whether, which, and how TRPC-encoded channels are involved in cellular responses in normal and diseased (e.g., asthmatic) airway SMCs.
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Meuchel LW, Stewart A, Smelter DF, Abcejo AJ, Thompson MA, Zaidi SIA, Martin RJ, Prakash YS. Neurokinin-neurotrophin interactions in airway smooth muscle. Am J Physiol Lung Cell Mol Physiol 2011; 301:L91-8. [PMID: 21515660 DOI: 10.1152/ajplung.00320.2010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Neurally derived tachykinins such as substance P (SP) play a key role in modulating airway contractility (especially with inflammation). Separately, the neurotrophin brain-derived neurotrophic factor (BDNF; potentially derived from nerves as well as airway smooth muscle; ASM) and its tropomyosin-related kinase receptor, TrkB, are involved in enhanced airway contractility. In this study, we hypothesized that neurokinins and neurotrophins are linked in enhancing intracellular Ca(2+) concentration ([Ca(2+)](i)) regulation in ASM. In rat ASM cells, 24 h exposure to 10 nM SP significantly increased BDNF and TrkB expression (P < 0.05). Furthermore, [Ca(2+)](i) responses to 1 μM ACh as well as BDNF (30 min) effects on [Ca(2+)](i) regulation were enhanced by prior SP exposure, largely via increased Ca(2+) influx (P < 0.05). The enhancing effect of SP on BDNF signaling was blunted by the neurokinin-2 receptor antagonist MEN-10376 (1 μM, P < 0.05) to a greater extent than the neurokinin-1 receptor antagonist RP-67580 (5 nM). Chelation of extracellular BDNF (chimeric TrkB-F(c); 1 μg/ml), as well as tyrosine kinase inhibition (100 nM K252a), substantially blunted SP effects (P < 0.05). Overnight (24 h) exposure of ASM cells to 50% oxygen increased BDNF and TrkB expression and potentiated both SP- and BDNF-induced enhancement of [Ca(2+)](i) (P < 0.05). These results suggest a novel interaction between SP and BDNF in regulating agonist-induced [Ca(2+)](i) regulation in ASM. The autocrine mechanism we present here represents a new area in the development of bronchoconstrictive reflex response and airway hyperreactive disorders.
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Affiliation(s)
- Lucas W Meuchel
- Department of Physiology & Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
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42
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Jude JA, Panettieri RA, Walseth TF, Kannan MS. TNF-α regulation of CD38 expression in human airway smooth muscle: role of MAP kinases and NF-κB. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 691:449-59. [PMID: 21153349 DOI: 10.1007/978-1-4419-6612-4_46] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Joseph A Jude
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, 1971 Commonwealth Avenue, St. Paul, MN 55108, USA
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43
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Gao YD, Zou JJ, Zheng JW, Shang M, Chen X, Geng S, Yang J. Promoting effects of IL-13 on Ca2+ release and store-operated Ca2+ entry in airway smooth muscle cells. Pulm Pharmacol Ther 2010; 23:182-9. [PMID: 20045483 DOI: 10.1016/j.pupt.2009.12.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Revised: 12/10/2009] [Accepted: 12/22/2009] [Indexed: 10/20/2022]
Abstract
Th2 cytokine interleukin (IL)-13 plays a central role in the pathogenesis of allergic asthma. IL-13 exhibits a direct effect on airway smooth muscle cells (ASMCs) to cause airway hyperresponsiveness. IL-13 has been demonstrated to regulate Ca(2+) signaling in ASMCs, but the underlying mechanisms are not fully understood. Store-operated Ca(2+) entry (SOCE) plays an important role in regulating Ca(2+) signaling and cellular responses of ASMCs, whether IL-13 affects SOCE in ASMCs has not been reported. In this study, by using confocal Ca(2+) fluorescence imaging, we found that IL-13 (10 ng/ml) treatment increased basal intracellular Ca(2+) ([Ca(2+)](i)) level, Ca(2+) release and SOCE induced by SERCA inhibitor thapsigargin in rat bronchial smooth muscle cells. The glucocorticoid dexamethasone and the short-acting beta2 adrenergic agonist (beta2 agonist) salbutamol suppressed IL-13-augumented basal [Ca(2+)](i), Ca(2+) release and SOCE, whereas the long-acting beta2 agonist salmeterol had no effect on altered Ca(2+) signaling in IL-13-treated ASMCs. Membrane-permeable cAMP analog dibutyryl-cAMP (db-cAMP) similarly decreased Ca(2+) release and SOCE induced by thapsigargin in IL-13-treated ASMCs, confirmed a role of cAMP/PKA signaling pathway in the regulation of SOCE. IL-13 promoted the proliferation of ASMCs stimulated by serum; this effect was inhibited by nonspecific Ca(2+) channel blockers SKF-96365 and NiCl(2), by salmeterol, but not by salbutamol and dexamethasone. IL-13 treatment did not change the expression of SOC channel-associated molecules STIM1, Orai1 and TRPC1 at mRNA level. Our findings identified a promoting effect of IL-13 on Ca(2+) release and SOCE in ASMCs, which partially contributes to its effect on the proliferation of ASMCs; the differences of glucocorticoids and beta2 agonists in inhibiting Ca(2+) signal and proliferation potentiated by IL-13 suggest that these therapies of asthma may have distinct effect on the relief of airway contraction and remodeling in bronchial asthma.
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Affiliation(s)
- Ya-dong Gao
- Department of Respiratory Medicine, Zhongnan Hospital, Wuhan University, Wuhan 430071, PR China
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Oldenburg PJ, Wyatt TA, Sisson JH. Ethanol attenuates contraction of primary cultured rat airway smooth muscle cells. Am J Respir Cell Mol Biol 2009; 43:539-45. [PMID: 19933378 DOI: 10.1165/rcmb.2009-0252oc] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Airway smooth muscle cells are the main effector cells involved in airway narrowing and have been used to study the signaling pathways involved in asthma-induced airway constriction. Our previous studies demonstrated that ethanol administration to mice attenuated methacholine-stimulated increases in airway responsiveness. Because ethanol administration attenuates airway responsiveness in mice, we hypothesized that ethanol directly blunts the ability of cultured airway smooth muscle cells to shorten. To test this hypothesis, we measured changes in the size of cultured rat airway smooth muscle (RASM) cells exposed to ethanol (100 mM) after treatment with methacholine. Ethanol markedly attenuated methacholine-stimulated cell shortening (methacholine-stimulated length change = 8.3 ± 1.2% for ethanol versus 43.9 ± 1.5% for control; P < 0.001). Ethanol-induced inhibition of methacholine-stimulated cell shortening was reversible 24 hours after removal of alcohol. To determine if ethanol acts through a cGMP-dependent pathway, incubation with ethanol for as little as 15 minutes produced a doubling of cGMP-dependent protein kinase (PKG) activity. Furthermore, treatment with the PKG antagonist analog Rp-8Br-cGMPS (10 μM) inhibited ethanol-induced kinase activation when compared with control-treated cells. In contrast to the effect of ethanol on PKG, ethanol pretreatment did not activate a cAMP-dependent protein kinase. These data demonstrate that brief ethanol exposure reversibly prevents methacholine-stimulated RASM cell contraction. In addition, it appears that this effect is the result of activation of the cGMP/PKG kinase pathway. These findings implicate a direct effect of ethanol on airway smooth muscle cells as the basis for in vivo ethanol effects.
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Affiliation(s)
- Peter J Oldenburg
- Department of Internal Medicine, Pulmonary, Critical Care, Sleep, & Allergy Division, University of Nebraska Medical Center, Omaha, Nebraska 68198-5910, USA
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45
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Sathish V, Thompson MA, Bailey JP, Pabelick CM, Prakash YS, Sieck GC. Effect of proinflammatory cytokines on regulation of sarcoplasmic reticulum Ca2+ reuptake in human airway smooth muscle. Am J Physiol Lung Cell Mol Physiol 2009; 297:L26-34. [PMID: 19395670 DOI: 10.1152/ajplung.00026.2009] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Airway inflammation leads to increased intracellular Ca(2+) ([Ca(2+)](i)) levels in airway smooth muscle (ASM) cells. Sarcoplasmic reticulum Ca(2+) release and reuptake are key components of ASM [Ca(2+)](i) regulation. Ca(2+) reuptake occurs via sarcoendoplasmic reticulum Ca(2+) ATPase (SERCA) and is regulated by the inhibitory protein phospholamban (PLB) in many cell types. In human ASM, we tested the hypothesis that inflammation increases PLB, thus inhibiting SERCA function, and leading to maintained [Ca(2+)](i) levels. Surprisingly, we found that human ASM does not express PLB protein (although mRNA is detectable). Overnight exposure to the proinflammatory cytokines TNFalpha and IL-13 did not induce PLB expression, raising the issue of how SERCA is regulated. We then found that direct SERCA phosphorylation (via CaMKII) occurs in human ASM. In fura-2-loaded human ASM cells, we found that the CaMKII antagonist KN-93 significantly slowed the rate of fall of [Ca(2+)](i) transients induced by ACh or bradykinin (in zero extracellular Ca(2+)), suggesting a role for CaMKII-mediated SERCA regulation. SERCA expression was decreased by cytokine exposure, and the rate of fall of [Ca(2+)](i) transients was slowed in cells exposed to TNFalpha and IL-13. Cytokine effects on Ca(2+) reuptake were unaffected by additional exposure to KN-93. These data indicate that in human ASM, SERCA is regulated by mechanisms such as CaMKII and that airway inflammation maintains [Ca(2+)](i) levels by decreasing SERCA expression and slowing Ca(2+) reuptake.
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Affiliation(s)
- Venkatachalem Sathish
- Departments of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, Minnesota 55905, USA
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46
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Prakash YS, Thompson MA, Pabelick CM. Brain-derived neurotrophic factor in TNF-alpha modulation of Ca2+ in human airway smooth muscle. Am J Respir Cell Mol Biol 2009; 41:603-11. [PMID: 19213875 DOI: 10.1165/rcmb.2008-0151oc] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
There is increasing recognition that neurotrophin (NT) signaling occurs in non-neuronal tissues, including airway smooth muscle (ASM). We recently demonstrated that NTs, such as brain-derived neurotrophic factor (BDNF), enhance intracellular Ca2+ ([Ca2+](i)) and force regulation in human ASM. Increased NT expression has been observed in airway diseases, such as asthma and allergy. In the present study, we tested the hypothesis that NTs contribute to inflammation-induced enhancement of ASM contractility. Using human ASM cells and real-time fluorescence [Ca2+](i) imaging, we examined the contribution of the high-affinity tropomyosin-related kinase and low-affinity, pan-NT p75NTR receptors to [Ca2+](i) regulation under control conditions and after exposure to the proinflammatory cytokine TNF-alpha (20 ng/ml). Exposure to TNF-alpha enhanced [Ca2+](i) responses to agonist (acetylcholine, histamine). Exposure to 10 nM BDNF for even 30 minutes substantially and synergistically enhanced TNF-alpha effects on [Ca2+](i) responses to agonist. Small interfering RNA suppression of tropomyosin-related kinase substantially blunted the effect of BDNF on [Ca2+](i) responses to agonist (with greater effect on Ca2+ influx via store-operated Ca2+ entry compared with sarcoplasmic reticulum Ca2+ release) in both control and TNF-alpha-exposed cells. However, p75NTR suppression by small interfering RNA had no significant effect on [Ca2+](i) responses in either cell group. These novel data demonstrate that NTs influence ASM contractility, and suggest a potential role for NTs in airway diseases.
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Affiliation(s)
- Y S Prakash
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
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Gally F, Hartney JM, Janssen WJ, Perraud AL. CD38 plays a dual role in allergen-induced airway hyperresponsiveness. Am J Respir Cell Mol Biol 2008; 40:433-42. [PMID: 18931329 DOI: 10.1165/rcmb.2007-0392oc] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The multifunctional surface protein CD38 acts as a receptor with ecto-enzymatic activity, hydrolyzing NAD to generate several products known to exhibit Ca2+-mobilizing properties. Although CD38 is a convenient marker of immune cell development, and an indicator of progression for several diseases, it is not restricted to the immune compartment. To determine the potentially multilayered involvement of CD38 in allergen-induced airway inflammation and hyperreactivity, we dissected the potential role of CD38 as a regulator of immunity, but also pulmonary function. CD38-deficient and wild-type (WT) mice were sensitized and airway challenged with ovalbumin, and subsequently analyzed regarding their level of airway hyperresponsiveness (AHR) in response to methacholine. Parameters of lung inflammation were also analyzed. Similar sets of measurements were obtained from reciprocal bone marrow swapping experiments between CD38(-/-) and WT mice. Mice lacking CD38 exhibit strongly reduced AHR, which is accompanied by a decrease in typical hallmarks of pulmonary inflammation, including eosinophilia and lymphocytic lung infiltrates, as well as Th2-cytokine levels (IL-4, -5, and -13). Antigen-specific immunoglobulin (Ig)E and IgG1 antibody titers are substantially reduced, consistent with CD38 being crucial for mounting a primary humoral systemic immune response. Reconstitution of lethally irradiated, lung-shielded, CD38-deficient mice with WT bone marrow does not restore WT levels of airway hyperreactivity, nor mucus secretion. The opposite experiment, transferring CD38(-/-) bone marrow into WT mice, also shows reduced AHR levels. These studies demonstrate that CD38 not only acts as a key modulator of the immune response, but also plays an equally important role as an intrinsic pulmonary component.
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Affiliation(s)
- Fabienne Gally
- Department of Immunology, National Jewish Health, 1400 Jackson St., Denver, CO 80206, USA
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