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Umlauf F, Diebolt CM, Englisch CN, Flockerzi F, Tschernig T. Distribution of TRPC5 in the human lung: A study in body donors. Exp Ther Med 2024; 28:363. [PMID: 39071908 PMCID: PMC11273251 DOI: 10.3892/etm.2024.12652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 06/13/2024] [Indexed: 07/30/2024] Open
Abstract
Transient receptor potential channel canonical 5 (TRPC5) is a non-selective ion channel; ion influx through TRPC5 causes activation of downstream signaling pathways. In addition, TRPC5 has been identified as having a potential role in pathological processes, particularly in diseases caused by cellular cation homeostasis dysregulation, such as bronchial asthma or pulmonary hypertension. However, the expression and distribution of TRPC5 in the human lung remain unclear. To date, TRPC5 has only been detected in a few cell types in the human lung, such as airway, pulmonary venous and arterial smooth muscle cells. The present study therefore aimed to investigate the protein expression of TRPC5 in the human lung and to evaluate its histological distribution. Human lung samples were obtained from six preserved body donors. After processing, both hematoxylin & eosin staining, as well as immunohistochemistry were performed. Microscopic analysis revealed medium to strong immunostaining signals in all lung structures examined, including the pleura, pulmonary arteries and veins, bronchioles, alveolar septa, type 1 and 2 pneumocytes, as well as alveolar macrophages. Current research suggests that TRPC5 may be involved in various pathological processes in the human lung and some pharmacological compounds have already been identified that affect the function of TRPC5. Therefore, TRPC5 may present a novel drug target for therapeutic intervention in various lung diseases. The results of the present study indicate that the TRPC5 protein is expressed in all examined histological structures of the human lung. These findings suggest that TRPC5 may be more important for physiological cell function and pathophysiological cell dysfunction in the lung than is currently known. Further research is needed to explore the role and therapeutic target potential of TRPC5 in the human lung.
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Affiliation(s)
- Frederik Umlauf
- Institute of Anatomy and Cell Biology, Saarland University, Faculty of Medicine, D-66421 Homburg, Germany
| | - Coline M. Diebolt
- Institute of Anatomy and Cell Biology, Saarland University, Faculty of Medicine, D-66421 Homburg, Germany
| | - Colya N. Englisch
- Institute of Anatomy and Cell Biology, Saarland University, Faculty of Medicine, D-66421 Homburg, Germany
| | - Fidelis Flockerzi
- Institute of Pathology, Saarland University, Faculty of Medicine, D-66421 Homburg, Germany
| | - Thomas Tschernig
- Institute of Anatomy and Cell Biology, Saarland University, Faculty of Medicine, D-66421 Homburg, Germany
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2
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Zyrianova T, Zou K, Lopez B, Liao A, Gu C, Olcese R, Schwingshackl A. Activation of Endothelial Large Conductance Potassium Channels Protects against TNF-α-Induced Inflammation. Int J Mol Sci 2023; 24:4087. [PMID: 36835507 PMCID: PMC9961193 DOI: 10.3390/ijms24044087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/30/2023] [Accepted: 02/09/2023] [Indexed: 02/22/2023] Open
Abstract
Elevated TNF-α levels in serum and broncho-alveolar lavage fluid of acute lung injury patients correlate with mortality rates. We hypothesized that pharmacological plasma membrane potential (Em) hyperpolarization protects against TNF-α-induced CCL-2 and IL-6 secretion from human pulmonary endothelial cells through inhibition of inflammatory Ca2+-dependent MAPK pathways. Since the role of Ca2+ influx in TNF-α-mediated inflammation remains poorly understood, we explored the role of L-type voltage-gated Ca2+ (CaV) channels in TNF-α-induced CCL-2 and IL-6 secretion from human pulmonary endothelial cells. The CaV channel blocker, Nifedipine, decreased both CCL-2 and IL-6 secretion, suggesting that a fraction of CaV channels is open at the significantly depolarized resting Em of human microvascular pulmonary endothelial cells (-6 ± 1.9 mV), as shown by whole-cell patch-clamp measurements. To further explore the role of CaV channels in cytokine secretion, we demonstrated that the beneficial effects of Nifedipine could also be achieved by Em hyperpolarization via the pharmacological activation of large conductance K+ (BK) channels with NS1619, which elicited a similar decrease in CCL-2 but not IL-6 secretion. Using functional gene enrichment analysis tools, we predicted and validated that known Ca2+-dependent kinases, JNK-1/2 and p38, are the most likely pathways to mediate the decrease in CCL-2 secretion.
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Affiliation(s)
- Tatiana Zyrianova
- Departments of Pediatrics, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Kathlyn Zou
- Departments of Pediatrics, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Benjamin Lopez
- Departments of Pediatrics, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Andy Liao
- Departments of Pediatrics, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Charles Gu
- Departments of Pediatrics, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Riccardo Olcese
- Departments of Anesthesiology and Perioperative Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
- Departments of Physiology, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Andreas Schwingshackl
- Departments of Pediatrics, University of California Los Angeles, Los Angeles, CA 90095, USA
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3
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He Z, Yang C, Jiang D, Wang X, Xing Z, Yu S, Yang Q, Wang L. The expression profile of a multi-stress inducible transient receptor potential vanilloid 4 (TRPV4) in Pacific oyster Crassostrea gigas. FISH AND SHELLFISH IMMUNOLOGY REPORTS 2022; 3:100064. [PMID: 36419610 PMCID: PMC9680104 DOI: 10.1016/j.fsirep.2022.100064] [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: 08/05/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 12/05/2022] Open
Abstract
CgTRPV4 with typical structural characteristics was indentified from Crassostrea gigas. CgTRPV4 was located in both endoplasmic reticulum and cytoplasmic membrane of oyster haemocytes. CgTRPV4 mRNA was ubiquitously expressed with the highest level in gill. The expression of CgTRPV4 mRNA was significantly up-regulated after high temperature stress at 30°C or V. splendidus stimulation.
Transient receptor potential vanilloid 4 (TRPV4) is one of the major non-selective cation channel proteins, which plays a crucial role in sensing biotic and abiotic stresses, such as pathogen infection, temperature, mechanical pressure and osmotic pressure changes by regulating Ca2+ homeostasis. In the present study, a TRPV4 homologue was identified in Pacific oyster Crassostrea gigas, designated as CgTRPV4. The open reading frame (ORF) of CgTRPV4 was of 2298 bp encoding a putative polypeptide of 765 amino acid residues with three typical ankyrin domains and six conserved transmembrane domains of TRPV4 subfamily proteins, as well as multiple N-glycosylation sites, cAMP- and cGMP-dependent protein kinase phosphorylation sites, protein kinase C phosphorylation sites, casein kinase II phosphorylation sites, and prokaryotic membrane lipoprotein lipid attachment site. The deduced amino acid sequence of CgTRPV4 shared 20.5%-26.2% similarity with TRPV4s from other species. During the early ontogenesis stages of oyster, the mRNA transcripts of CgTRPV4 were detectable in all the stages with the highest expression level in fertilized eggs and the lowest in D-hinged larvae. In adult oyster, the CgTRPV4 mRNA could be detected in all the examined tissues, including gill, hepatopancreas, adductor muscle, labial palp, mantle and haemocyte, with the highest expression level in gill (45.08-fold of that in hepatopancreas, p < 0.05). In immunocytochemical assay, the CgTRPV4 positive signals were distributed in both endoplasmic reticulum and cytoplasmic membrane of oyster haemocytes. The mRNA expression of CgTRPV4 in gill was significantly up-regulated after high temperature stress at 30°C (p < 0.05) and after Vibrio splendidus stimulation (p < 0.05). These results indicated that CgTRPV4 was a classical member of TRPV4 family in oyster, which was induced by either biotic or abiotic stimulations and involved in mediating the stress response of oysters.
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Automated measurement of cell mechanical properties using an integrated dielectrophoretic microfluidic device. iScience 2022; 25:104275. [PMID: 35602969 PMCID: PMC9114521 DOI: 10.1016/j.isci.2022.104275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/14/2022] [Accepted: 04/14/2022] [Indexed: 11/24/2022] Open
Abstract
Cell mechanics is closely related to and interacts with cellular functions, which has the potential to be an effective biomarker to indicate disease onset and progression. Although several techniques have been developed for measuring cell mechanical properties, the issues of limited measurement data and biological significance because of complex and labor-intensive manipulation remain to be addressed, especially for the dielectrophoresis-based approach that is difficult to utilize flow measurement techniques. In this work, a dielectrophoresis-based solution is proposed to automatically obtain mass cellular mechanical data by combining a designed microfluidic device integrated the functions of cell capture, dielectrophoretic stretching, and cell release and an automatic control scheme. Experiments using human umbilical vein endothelial cells and breast cells revealed the automation capability of this device. The proposed method provides an effective way to address the low-throughput problem of dielectrophoresis-based cell mechanical property measurements, which enhance the biostatistical significance for cellular mechanism studies. Cell capture, dielectrophoretic stretching, and release in one microfluidic chip Automatic measurement scheme to realize circularly measurement Automatic acquisition of large amounts of cell mechanical properties data Significant advances in dielectrophoretic measurement of cell mechanical properties
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Riccardi D, Ward JPT, Yarova PL, Janssen LJ, Lee TH, Ying S, Corrigan CJ. Topical therapy with negative allosteric modulators of the calcium-sensing receptor (calcilytics) for the management of asthma: the beginning of a new era? Eur Respir J 2022; 60:13993003.02103-2021. [DOI: 10.1183/13993003.02103-2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 12/16/2021] [Indexed: 11/05/2022]
Abstract
In this review article we present the evidence to date supporting the role of the calcium-sensing receptor (CaSR) as a key, pluripotential molecular trigger for asthma and speculate on the likely benefits of topical therapy of asthma with negative allosteric modulators of the CaSR: calcilytics.
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Zhang YL, Zhang RG, Chen FY, Qiu ZE, Chen L, Huang ZX, Huang J, Zhu YX, Zhao L, Zhou WL. Cellular Mechanism Underlying the Facilitation of Contractile Response Induced by Tumor Necrosis Factor-α in Mouse Tracheal Smooth Muscle. THE AMERICAN JOURNAL OF PATHOLOGY 2021; 192:104-111. [PMID: 34756873 DOI: 10.1016/j.ajpath.2021.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/08/2021] [Accepted: 10/12/2021] [Indexed: 01/10/2023]
Abstract
The proinflammatory cytokine tumor necrosis factor-α (TNF-α) augments intracellular Ca2+ signaling and contractile responses of airway smooth muscles, leading to airway hyperresponsiveness. However, the underlying mechanism has not been fully elucidated. This study aimed to investigate the cellular mechanism of the potentiated contraction of mouse tracheal smooth muscle induced by TNF-α. The results showed that TNF-α triggered facilitation of mouse tracheal smooth muscle contraction in an epithelium-independent manner. The TNF-α-induced hypercontractility could be suppressed by the protein kinase C inhibitor GF109203X, the tyrosine kinase inhibitor genistein, the Src inhibitor PP2, or the L-type voltage-dependent Ca2+ channel blocker nifedipine. After TNF-α incubation, the α1C L-type Ca2+ channel (CaV1.2) was up-regulated in primary cultured mouse tracheal smooth muscle cells. Pronounced phosphotyrosine levels also were observed in mouse tracheas. In conclusion, this study showed that TNF-α enhanced airway smooth muscle contraction via protein kinase C-Src-CaV1.2 pathways, which provides novel insights into the pathologic role of proinflammatory cytokines in mediating airway hyperresponsiveness.
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Affiliation(s)
- Yi-Lin Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Rui-Gang Zhang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China; Department of Physiology, Basic Medical School, Guangdong Medical University, Zhanjiang, China
| | - Feng-Ying Chen
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China; Department of Pathology, The Maternal and Child Health Care Hospital of HuaDu District (Huzhong Hospital), Guangzhou, China
| | - Zhuo-Er Qiu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Lei Chen
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ze-Xin Huang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Jiehong Huang
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yun-Xin Zhu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Lei Zhao
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China.
| | - Wen-Liang Zhou
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China.
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7
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Stretch-activated calcium mobilization in airway smooth muscle and pathophysiology of asthma. CURRENT OPINION IN PHYSIOLOGY 2021. [DOI: 10.1016/j.cophys.2021.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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8
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Sagar S, Kapoor H, Chaudhary N, Roy SS. Cellular and mitochondrial calcium communication in obstructive lung disorders. Mitochondrion 2021; 58:184-199. [PMID: 33766748 DOI: 10.1016/j.mito.2021.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 03/03/2021] [Accepted: 03/15/2021] [Indexed: 12/14/2022]
Abstract
Calcium (Ca2+) signalling is well known to dictate cellular functioning and fate. In recent years, the accumulation of Ca2+ in the mitochondria has emerged as an important factor in Chronic Respiratory Diseases (CRD) such as Asthma and Chronic Obstructive Pulmonary Disease (COPD). Various reports underline an aberrant increase in the intracellular Ca2+, leading to mitochondrial ROS generation, and further activation of the apoptotic pathway in these diseases. Mitochondria contribute to Ca2+ buffering which in turn regulates mitochondrial metabolism and ATP production. Disruption of this Ca2+ balance leads to impaired cellular processes like apoptosis or necrosis and thus contributes to the pathophysiology of airway diseases. This review highlights the key role of cytoplasmic and mitochondrial Ca2+ signalling in regulating CRD, such as asthma and COPD. A better understanding of the dysregulation of mitochondrial Ca2+ homeostasis in these diseases could provide cues for the development of advanced therapeutic interventions in these diseases.
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Affiliation(s)
- Shakti Sagar
- CSIR-Institute of Genomics & Integrative Biology, New Delhi, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Himanshi Kapoor
- CSIR-Institute of Genomics & Integrative Biology, New Delhi, India
| | - Nisha Chaudhary
- Multidisciplinary Center for Advanced Research and Studies, Jamia Millia Islamia, New Delhi, India
| | - Soumya Sinha Roy
- CSIR-Institute of Genomics & Integrative Biology, New Delhi, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India.
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9
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Roos BB, Teske JJ, Bhallamudi S, Pabelick CM, Sathish V, Prakash YS. Neurotrophin Regulation and Signaling in Airway Smooth Muscle. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1304:109-121. [PMID: 34019266 PMCID: PMC11042712 DOI: 10.1007/978-3-030-68748-9_7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Structural and functional aspects of bronchial airways are key throughout life and play critical roles in diseases such as asthma. Asthma involves functional changes such as airway irritability and hyperreactivity, as well as structural changes such as enhanced cellular proliferation of airway smooth muscle (ASM), epithelium, and fibroblasts, and altered extracellular matrix (ECM) and fibrosis, all modulated by factors such as inflammation. There is now increasing recognition that disease maintenance following initial triggers involves a prominent role for resident nonimmune airway cells that secrete growth factors with pleiotropic autocrine and paracrine effects. The family of neurotrophins may be particularly relevant in this regard. Long recognized in the nervous system, classical neurotrophins such as brain-derived neurotrophic factor (BDNF) and nonclassical ligands such as glial-derived neurotrophic factor (GDNF) are now known to be expressed and functional in non-neuronal systems including lung. However, the sources, targets, regulation, and downstream effects are still under investigation. In this chapter, we discuss current state of knowledge and future directions regarding BDNF and GDNF in airway physiology and on pathophysiological contributions in asthma.
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Affiliation(s)
- Benjamin B Roos
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA
| | - Jacob J Teske
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA
| | - Sangeeta Bhallamudi
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND, USA
| | - Christina M Pabelick
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Venkatachalem Sathish
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, ND, USA
| | - Y S Prakash
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA.
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA.
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Klein S, Mentrup B, Timmen M, Sherwood J, Lindemann O, Fobker M, Kronenberg D, Pap T, Raschke MJ, Stange R. Modulation of Transient Receptor Potential Channels 3 and 6 Regulates Osteoclast Function with Impact on Trabecular Bone Loss. Calcif Tissue Int 2020; 106:655-664. [PMID: 32140760 DOI: 10.1007/s00223-020-00673-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/08/2020] [Indexed: 01/09/2023]
Abstract
Enhanced osteoclast formation and function is a fundamental cause of alterations to bone structure and plays an important role in several diseases impairing bone quality. Recent work revealed that TRP calcium channels 3 and 6 might play a special role in this context. By analyzing the bone phenotype of TRPC6-deficient mice we detected a regulatory effect of TRPC3 on osteoclast function. These mice exhibit a significant decrease in bone volume per tissue volume, trabecular thickness and -number together with an increased number of osteoclasts found on the surface of trabecular bone. Primary bone marrow mononuclear cells from TRPC6-deficient mice showed enhanced osteoclastic differentiation and resorptive activity. This was confirmed in vitro by using TRPC6-deficient RAW 264.7 cells. TRPC6 deficiency led to an increase of TRPC3 in osteoclasts, suggesting that TRPC3 overcompensates for the loss of TRPC6. Raised intracellular calcium levels led to enhanced NFAT-luciferase reporter gene activity in the absence of TRPC6. In line with these findings inhibition of TRPC3 using the specific inhibitor Pyr3 significantly reduced intracellular calcium concentrations and normalized osteoclastic differentiation and resorptive activity of TRPC6-deficient cells. Interestingly, an up-regulation of TRPC3 could be detected in a cohort of patients with low bone mineral density by comparing micro array data sets of circulating human osteoclast precursor cells to those from patients with high bone mineral density, suggesting a noticeable contribution of TRP calcium channels on bone quality. These observations demonstrate a novel regulatory function of TRPC channels in the process of osteoclastic differentiation and bone loss.
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Affiliation(s)
- Sebastian Klein
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
- Institute of Pathology, University Hospital of Cologne, Cologne, Germany
| | - Birgit Mentrup
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Melanie Timmen
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Joanna Sherwood
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Otto Lindemann
- Institute of Physiology II, University Münster, Münster, Germany
| | - Manfred Fobker
- Center for Laboratory Medicine, University Hospital Münster, Münster, Germany
| | - Daniel Kronenberg
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Thomas Pap
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Michael J Raschke
- Department of Trauma, Hand and Reconstructive Surgery University Hospital Münster, Münster, Germany
| | - Richard Stange
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany.
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11
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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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12
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Direct Activation of TRPC3 Channels by the Antimalarial Agent Artemisinin. Cells 2020; 9:cells9010202. [PMID: 31947602 PMCID: PMC7016953 DOI: 10.3390/cells9010202] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 12/27/2019] [Accepted: 01/09/2020] [Indexed: 12/22/2022] Open
Abstract
(1) Background: Members of the TRPC3/TRPC6/TRPC7 subfamily of canonical transient receptor potential (TRP) channels share an amino acid similarity of more than 80% and can form heteromeric channel complexes. They are directly gated by diacylglycerols in a protein kinase C-independent manner. To assess TRPC3 channel functions without concomitant protein kinase C activation, direct activators are highly desirable. (2) Methods: By screening 2000 bioactive compounds in a Ca2+ influx assay, we identified artemisinin as a TRPC3 activator. Validation and characterization of the hit was performed by applying fluorometric Ca2+ influx assays and electrophysiological patch-clamp experiments in heterologously or endogenously TRPC3-expressing cells. (3) Results: Artemisinin elicited Ca2+ entry through TRPC3 or heteromeric TRPC3:TRPC6 channels, but did not or only weakly activated TRPC6 and TRPC7. Electrophysiological recordings confirmed the reversible and repeatable TRPC3 activation by artemisinin that was inhibited by established TRPC3 channel blockers. Rectification properties and reversal potentials were similar to those observed after stimulation with a diacylglycerol mimic, indicating that artemisinin induces a similar active state as the physiological activator. In rat pheochromocytoma PC12 cells that endogenously express TRPC3, artemisinin induced a Ca2+ influx and TRPC3-like currents. (4) Conclusions: Our findings identify artemisinin as a new biologically active entity to activate recombinant or native TRPC3-bearing channel complexes in a membrane-confined fashion.
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Canonical Transient Potential Receptor-3 Channels in Normal and Diseased Airway Smooth Muscle Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1131:471-487. [PMID: 31646521 DOI: 10.1007/978-3-030-12457-1_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
All seven canonical transient potential receptor (TRPC1-7) channel members are expressed in mammalian airway smooth muscle cells (ASMCs). Among this family, TRPC3 channel plays an important role in the control of the resting [Ca2+]i and agonist-induced increase in [Ca2+]i. This channel is significantly upregulated in molecular expression and functional activity in airway diseases. The upregulated channel significantly augments the resting [Ca2+]i and agonist-induced increase in [Ca2+]i, thereby exerting a direct and essential effect in airway hyperresponsiveness. The increased TRPC3 channel-mediated Ca2+ signaling also results in the transcription factor nuclear factor-κB (NF-κB) activation via protein kinase C-α (PKCα)-dependent inhibitor of NFκB-α (IκBα) and calcineurin-dependent IκBβ signaling pathways, which upregulates cyclin-D1 expression and causes cell proliferation, leading to airway remodeling. TRPC3 channel may further interact with intracellular release Ca2+ channels, Orai channels and Ca2+-sensing stromal interaction molecules, mediating important cellular responses in ASMCs and the development of airway diseases.
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14
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Nayak AP, Villalba D, Deshpande DA. Bitter Taste Receptors: an Answer to Comprehensive Asthma Control? Curr Allergy Asthma Rep 2019; 19:48. [PMID: 31486942 DOI: 10.1007/s11882-019-0876-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PURPOSE OF REVIEW Asthma is marked by peculiar pathological features involving airway contraction, an impinging inflammation in the lungs, and an inexorably progressive remodeling of pulmonary architecture. Current medications for management of asthma exacerbations fail to optimally mitigate these pathologies, which is partly due to the intrinsic heterogeneity in the development and progression of asthma within different populations. In recent years, the discovery of the ectopic expression of TAS2Rs in extraoral tissues and different cell types, combined with significant strides in gaining mechanistic understanding into receptor signaling and function, has revealed the potential to target TAS2Rs for asthma relief. RECENT FINDINGS TAS2R activation leads to relaxation of airway smooth muscle cells and bronchodilation. In addition, findings from preclinical studies in murine model of asthma suggest that TAS2R agonists inhibit allergen-induced airway inflammation, remodeling, and hyperresponsiveness. In this review, we expand on the opportunity presented by TAS2Rs in the development of a comprehensive asthma treatment that overcomes the limitations set forth by current asthma therapeutics.
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Affiliation(s)
- Ajay P Nayak
- Department of Medicine, Center for Translational Medicine and Division of Pulmonary, Allergy and Critical Care Medicine; and Jane & Leonard Korman Respiratory Institute, Thomas Jefferson University, Jefferson Alumni Hall, Room 543, 1020 Locust Street, Philadelphia, PA, 19107, USA
| | - Dominic Villalba
- Department of Medicine, Center for Translational Medicine and Division of Pulmonary, Allergy and Critical Care Medicine; and Jane & Leonard Korman Respiratory Institute, Thomas Jefferson University, Jefferson Alumni Hall, Room 543, 1020 Locust Street, Philadelphia, PA, 19107, USA
| | - Deepak A Deshpande
- Department of Medicine, Center for Translational Medicine and Division of Pulmonary, Allergy and Critical Care Medicine; and Jane & Leonard Korman Respiratory Institute, Thomas Jefferson University, Jefferson Alumni Hall, Room 543, 1020 Locust Street, Philadelphia, PA, 19107, USA.
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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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Benidipine, an anti-hypertensive drug, relaxes mouse airway smooth muscle. Life Sci 2019; 227:74-81. [DOI: 10.1016/j.lfs.2019.04.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/08/2019] [Accepted: 04/15/2019] [Indexed: 12/15/2022]
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17
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Li M, Shang YX. Neurokinin-1 receptor antagonist decreases [Ca 2+]i in airway smooth muscle cells by reducing the reverse-mode Na +/Ca 2+ exchanger current. Peptides 2019; 115:69-74. [PMID: 30946859 DOI: 10.1016/j.peptides.2019.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 03/15/2019] [Accepted: 03/20/2019] [Indexed: 11/15/2022]
Abstract
Airway smooth muscle (ASM) is involved in asthma airway inflammation. The aim of this study was to evaluate the effect of substance P and neurokinin-1 receptor (NK-1R) antagonist on intracellular calcium concentration ([Ca2+]i) in airway smooth muscle cells (ASMCs), ASMC contraction, and the effect on reverse-mode Na+-Ca2+ exchanger (NCX) currents in ASMCs. In our study, primary rat ASMCs were cultured. ASMCs were identified by immunofluorescence. [Ca2+]i variations were measured by fluorescence microscopy. Cell shortening (%) and relaxation (%) were analyzed with phase-contrast microscopy. Patch clamp techniques were used to assess NCX currents in ASMCs. We found that substance P increased, and NK-1R antagonist decreased [Ca2+]i in ASMCs. Substance P induced ASMCs contraction, and NK-1R antagonist can make ASMC relax. Patch clamp techniques were implemented to analyze NCX currents in ASMCs. Substance P increased reverse-mode NCX currents in ASMCs but the current density was lower than the one treated with acetylcholine (Ach). NK-1R antagonist reduced reverse-mode NCX current activity in ASMCs, and the current density was similar to the one treated with the reversed NCX inhibitor. So, we concluded that substance P increased [Ca2+]i in ASMCs by promoting the reverse-mode NCX current and stimulating ASMCs, whereas NK-1R antagonist decreased [Ca2+]i in ASMCs by decreasing the reverse-mode NCX current to make ASMCs relax.
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Affiliation(s)
- Miao Li
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China.
| | - Yun-Xiao Shang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang 110004, China
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18
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TRPC channels mediated calcium entry is required for proliferation of human airway smooth muscle cells induced by nicotine-nAChR. Biochimie 2019; 158:139-148. [DOI: 10.1016/j.biochi.2018.12.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 12/09/2018] [Indexed: 01/06/2023]
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19
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Wen J, Meng X, Xuan B, Zhou T, Gao H, Dong H, Wang Y. Na +/Ca 2+ Exchanger 1 in Airway Smooth Muscle of Allergic Inflammation Mouse Model. Front Pharmacol 2018; 9:1471. [PMID: 30618761 PMCID: PMC6300471 DOI: 10.3389/fphar.2018.01471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 11/30/2018] [Indexed: 11/13/2022] Open
Abstract
Cytosolic free Ca2+ ([Ca2+]cyt) is essential for airway contraction, secretion and remodeling. [Ca2+]cyt homeostasis is controlled by several critical molecules, one of which is the Na+/Ca2+ exchanger 1 (NCX1) in the plasma membrane. Since little is currently known about NCX1 in the airway smooth muscle and its involvement in airway diseases, the present study was designed to investigate the expression and function of NCX1 in normal airway smooth muscle and its relevance to airway inflammation. Western blot analysis, tracheal smooth muscle contraction, and [Ca2+]cyt measurements were performed in mouse tracheal smooth muscle tissues and primary airway smooth muscle cell cultures. Additional studies were performed in a mouse model of allergic airway inflammation. Our data showed that NCX1 proteins were expressed in the human bronchial smooth muscle cells (HBSMCs), murine airway and whole lung. Carbachol raised [Ca2+]cyt in mouse tracheal smooth muscle cells and induced murine tracheal contraction, all of which were significantly attenuated by KB-R7943, a selective NCX inhibitor. Removal of extracellular Na+ increased [Ca2+]cyt in HBSMCs and mouse tracheal SMCs, which was dependent on extracellular Ca2+ and sensitive to KB-R7943. TNF-α treatment of HBSMCs significantly upregulated mRNA and protein expression of NCX1 and enhanced NCX activity. Finally, KB-R7943 abolished the airway hyperresponsiveness to methacholine in an ovalbumin-induced mouse model of allergic airway inflammation. Together, these findings indicate that NCX1 in airway smooth muscle may play an important role in the development of airway hyperresponsiveness, and downregulation or inhibition of NCX1 may serve as a potential therapeutic approach for asthma.
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Affiliation(s)
- Jiexia Wen
- Department of Central Laboratory, The First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China
| | - Xiangcai Meng
- Department of General Surgery, The First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China
| | - Bin Xuan
- Department of General Surgery, The First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China
| | - Tao Zhou
- Department of General Surgery, The First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China
| | - Heran Gao
- Department of General Surgery, The First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China
| | - Hui Dong
- Department of Central Laboratory, The First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China
| | - Yimin Wang
- Department of Central Laboratory, The First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China.,Department of General Surgery, The First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China
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20
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Ding S, Zhang J, Yin S, Lu J, Hu M, Du J, Huang J, Shen B. Inflammatory cytokines tumour necrosis factor-α and interleukin-8 enhance airway smooth muscle contraction by increasing L-type Ca 2+ channel expression. Clin Exp Pharmacol Physiol 2018; 46:56-64. [PMID: 30203559 DOI: 10.1111/1440-1681.13030] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 08/03/2018] [Accepted: 08/05/2018] [Indexed: 12/15/2022]
Abstract
Inflammation elevates intracellular calcium concentrations ([Ca2+ ]i ) in airway smooth muscle (ASM). The L-type Ca2+ channel (L-VDCC) plays an important role in regulating Ca2+ influx in ASM. However, the role of L-VDCC in the inflammatory cytokine-induced pathology of ASM remains unclear. In the present study, we used calcium imaging and isometric tension measurements to assess the role of L-VDCC in agonist-induced [Ca2+ ]i rise and the associated contractions in mouse ASM, and we used immunoblotting to identify L-VDCC protein expression levels in mouse ASM after exposure to tumour necrosis factor alpha (TNF-α) or interleukin-8 (IL-8). Our results showed that high-K+ - or carbachol-induced contractions of mouse ASM were significantly greater after pretreatment with TNF-α or IL-8 for 24 hours. Both verapamil and nifedipine, L-VDCC inhibitors, abolished this increased contraction induced by TNF-α or IL-8 pretreatment. Moreover, TNF-α treatment enhanced carbachol-induced Ca2+ influx in ASM cells, and this effect was abrogated by verapamil. Additionally, immunoblotting results showed that preincubation of mouse ASM with TNF-α or IL-8 also enhanced L-VDCC protein expression. On the basis of these findings, we concluded that proinflammatory cytokines, such as TNF-α and IL-8, increase the expression level of L-VDCC, which in turn contributes to augmented agonist-induced ASM contractions. This effect of inflammation on L-VDCC expression in ASM may be associated with airway hyper-responsiveness and involved in the development of asthma.
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Affiliation(s)
- Shengang Ding
- Department of Paediatrics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jie Zhang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China.,Department of Physiology, Third Military Medical University, Chongqing, China
| | - Sheng Yin
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Jingsen Lu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Min Hu
- Department of Sports and Health, Guangzhou Sport University, Guangzhou, Guangdong, China
| | - Juan Du
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Junhao Huang
- Guangdong Provincial Key Laboratory of Sports and Health Promotion, Scientific Research Center, Guangzhou Sport University, Guangzhou, Guangdong, China
| | - Bing Shen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
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21
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Yan F, Gao H, Zhao H, Bhatia M, Zeng Y. Roles of airway smooth muscle dysfunction in chronic obstructive pulmonary disease. J Transl Med 2018; 16:262. [PMID: 30257694 PMCID: PMC6158847 DOI: 10.1186/s12967-018-1635-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 09/16/2018] [Indexed: 12/24/2022] Open
Abstract
The airway smooth muscle (ASM) plays an indispensable role in airway structure and function. Dysfunction in ASM plays a central role in the pathogenesis of chronic obstructive pulmonary disease (COPD) and contributes to alterations of contractility, inflammatory response, immunoreaction, phenotype, quantity, and size of airways. ASM makes a key contribution in COPD by various mechanisms including altered contractility and relaxation induce by [Ca2+]i, cell proliferation and hypertrophy, production and modulation of extracellular cytokines, and release of pro-and-anti-inflammatory mediators. Multiple dysfunctions of ASM contribute to modulating airway responses to stimuli, remodeling, and fibrosis, as well as influence the compliance of lungs. The present review highlights regulatory roles of multiple factors in the development of ASM dysfunction in COPD, aims to understand the regulatory mechanism by which ASM dysfunctions are initiated, and explores the clinical significance of ASM on alterations of airway structure and function in COPD and development of novel therapeutic strategies for COPD.
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Affiliation(s)
- Furong Yan
- Center for Molecular Diagnosis and Therapy, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China
| | - Hongzhi Gao
- Center for Molecular Diagnosis and Therapy, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China
| | - Hong Zhao
- Center for Molecular Diagnosis and Therapy, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China
| | - Madhav Bhatia
- Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Yiming Zeng
- Department of Pulmonary and Critical Care Medicine, Respiratory Medicine Center of Fujian Province, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China.
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22
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Xu BM, Zhang JH, Wang JL, Xiao JH. TRPC3 overexpression and intervention in airway smooth muscle of ovalbumin-induced hyperresponsiveness and remodeling. Cell Biol Int 2018; 42:1021-1029. [PMID: 29624776 DOI: 10.1002/cbin.10970] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 03/31/2018] [Indexed: 01/22/2023]
Abstract
Transient receptor potential canonical channel 3 (TRPC3) proteins function as non-voltage-gated Ca2+ -permeable channels and play divergent roles in many processes of pathophysiology. The purpose of this study was to determine the relationship between TRPC3 expression and airway hyperresponsiveness and remodeling in ovalbumin-induced asthmatic Kunming mice. Mice were sensitized and challenged by ovalbumin to establish asthmatic model. Hematoxylin-eosin staining, hydroxyproline assay, and isometric tracheal ring force measurement were used to evaluate airway remodeling and hyperresponsiveness in asthmatic mice. Western blot was performed to detect the expression of TRPC3 proteins. MTT assay was used to measure the proliferation of airway smooth muscle cells. TRPC3 protein expression increased in airway smooth muscle of asthmatic mice. GdCl3 , a nonspecific TRPC blocker, attenuated the contractile force of airway smooth muscle. Fetal bovine serum stimulated airway smooth muscle cells proliferation and augmented TRPC3 protein expression. Both TRPC3 blockade by GdCl3 or specific TRPC3 antibodies and gene silencing by siRNA inhibited the proliferation of airway smooth muscle cells. In contrast, the current drugs treatment for asthma such as Dexamethasone and Aminophylline had no effects on TRPC3 protein overexpression. Therefore, TRPC3 protein overexpression may be involved in airway smooth muscle hyperresponsiveness and remodeling in asthmatic mice, providing evidence for a new direction of asthma pathogenesis research and a new target for drug intervention.
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Affiliation(s)
- Bo-Ming Xu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, China
| | - Jia-Hua Zhang
- Center for Stem Cell Research and Application, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jia-Ling Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, China
| | - Jun-Hua Xiao
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, China
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23
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Yoshida K, Nakai A, Kaneshiro K, Hashimoto N, Suzuki K, Uchida K, Hashimoto T, Kawasaki Y, Tateishi K, Nakagawa N, Shibanuma N, Sakai Y, Hashiramoto A. TNF-α induces expression of the circadian clock gene Bmal1 via dual calcium-dependent pathways in rheumatoid synovial cells. Biochem Biophys Res Commun 2018; 495:1675-1680. [PMID: 29217191 DOI: 10.1016/j.bbrc.2017.12.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 12/03/2017] [Indexed: 12/21/2022]
Abstract
Tumor necrosis factor (TNF)-α is responsible for expressions of several clock genes and affects joint symptoms of rheumatoid arthritis (RA) with diurnal fluctuation. We tried to determine the mechanism involved in over-expression of Bmal1, induced by TNF-α, in primary cultured rheumatoid synovial cells. Cells were incubated with intra-cellular Ca2+ chelator BAPTA-AM, calcineurin inhibitor FK506 and p300/CBP (CREB binding protein) inhibitor C646, respectively, or transfected with p300 and CBP small interfering RNA (siRNA) before stimulation with TNF-α. Oscillation phase and amplitude of Bmal1, transcriptional activator Rorα, transcriptional repressor Rev-erbα, and histone acetyltransferases (p300 and Cbp) were evaluated by quantitative real-time PCR. As results, TNF-α did not influence the oscillation phase of Rev-erbα, while enhanced those of Rorα, resulting in over-expression of Bmal1. When Ca2+ influx was inhibited by BAPTA-AM, TNF-α-mediated up-regulation of Rorα was cancelled, however, that of Bmal1 was still apparent. When we further explored another pathway between TNF-α and Bmal1, TNF-α suppressed the expression of Rev-erbα in the absence of Ca2+ influx, as well as those of p300 and Cbp genes. Finally, actions of TNF-α, in increasing Bmal1/Rorα and decreasing Rev-erbα, were cancelled by C646 treatment or silencing of both p300 and Cbp. In conclusion, we determined a novel role of TNF-α in inducing Bmal1 via dual calcium dependent pathways; Rorα was up-regulated in the presence of Ca2+ influx and Rev-erbα was down-regulated in the absence of that. Results proposed that inhibition of p300/CBP could be new therapeutic targets for RA.
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MESH Headings
- ARNTL Transcription Factors/genetics
- Arthritis, Rheumatoid/genetics
- Arthritis, Rheumatoid/metabolism
- Arthritis, Rheumatoid/pathology
- Benzoates/pharmacology
- CREB-Binding Protein/antagonists & inhibitors
- CREB-Binding Protein/genetics
- Calcium Chelating Agents/pharmacology
- Calcium Signaling/drug effects
- Cells, Cultured
- Circadian Clocks/genetics
- E1A-Associated p300 Protein/antagonists & inhibitors
- E1A-Associated p300 Protein/genetics
- Egtazic Acid/analogs & derivatives
- Egtazic Acid/pharmacology
- Gene Expression/drug effects
- Humans
- Nitrobenzenes
- Nuclear Receptor Subfamily 1, Group D, Member 1/genetics
- Nuclear Receptor Subfamily 1, Group F, Member 1/genetics
- Pyrazoles/pharmacology
- Pyrazolones
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Small Interfering/genetics
- Synovial Membrane/drug effects
- Synovial Membrane/metabolism
- Synovial Membrane/pathology
- Tumor Necrosis Factor-alpha/metabolism
- Tumor Necrosis Factor-alpha/pharmacology
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Affiliation(s)
- Kohsuke Yoshida
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe 654-0142, Japan
| | - Ayako Nakai
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe 654-0142, Japan
| | - Kenta Kaneshiro
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe 654-0142, Japan
| | - Naonori Hashimoto
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe 654-0142, Japan
| | - Kohjin Suzuki
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe 654-0142, Japan
| | - Koto Uchida
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe 654-0142, Japan
| | - Teppei Hashimoto
- Department of Rheumatology, Kobe Kaisei Hospital, Kobe 657-0068, Japan
| | - Yoshiko Kawasaki
- Department of Rheumatology, Kobe Kaisei Hospital, Kobe 657-0068, Japan
| | - Koji Tateishi
- Department of Orthopaedic Surgery, Konan-Kakogawa Hospital, Kakagawa 675-0009, Japan
| | - Natsuko Nakagawa
- Department of Orthopaedic Surgery, Konan-Kakogawa Hospital, Kakagawa 675-0009, Japan
| | - Nao Shibanuma
- Department of Orthopaedic Surgery, Kobe Kaisei Hospital, Kobe 657-0068, Japan
| | - Yoshitada Sakai
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Akira Hashiramoto
- Department of Biophysics, Kobe University Graduate School of Health Sciences, Kobe 654-0142, Japan; Department of Rheumatology, Kobe Kaisei Hospital, Kobe 657-0068, Japan.
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24
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Chen XX, Zhang JH, Pan BH, Ren HL, Feng XL, Wang JL, Xiao JH. Role of canonical transient receptor potential channel-3 in acetylcholine-induced mouse airway smooth muscle cell proliferation. Life Sci 2017; 187:64-73. [PMID: 28802903 DOI: 10.1016/j.lfs.2017.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 07/22/2017] [Accepted: 08/08/2017] [Indexed: 12/17/2022]
Abstract
AIMS Canonical transient receptor potential channel-3 (TRPC3)-encoded Ca2+-permeable nonselective cation channel (NSCC) has been proven to be an important native constitutively active channel in airway smooth muscle cell (ASMC), which plays significant roles in physiological and pathological conditions by controlling Ca2+ homeostasis in ASMC. Acetylcholine (ACh) is generally accepted as a contractile parasympathetic neurotransmitter in the airway. Recently studies have revealed the pathological role of ACh in airway remodeling, however, the mechanisms remain unclear. Here, we investigated the role of TRPC3 in ACh-induced ASMC proliferation. MATERIALS AND METHODS Primary mouse ASMCs were cultured with or without ACh treatment, then cell viability, TRPC3 expression, NSCC currents and [Ca2+]i changes were examined by MTT assay, cell counting, Western blotting, standard whole-cell patch clamp recording and calcium imaging, respectively. Small interfering RNA (siRNA) technology was used to confirm the contribution of TRPC3 to ACh-induced ASMC proliferation. KEY FINDINGS TRPC3 blocker Gd3+, antibody or siRNA largely inhibited ACh-induced up-regulation of TRPC3 protein, enhancement of NSCC currents, resting [Ca2+]i and KCl-induced changes in [Ca2+]i, eventually inhibiting ACh-induced ASMC proliferation. SIGNIFICANCE Our data suggested ACh could induce ASMC proliferation, and TRPC3 may be involved in ACh-induced ASMC proliferation that occurs with airway remodeling.
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Affiliation(s)
- Xiao-Xu Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jia-Hua Zhang
- Center for Stem Cell Research and Application, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Bin-Hua Pan
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hui-Li Ren
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiu-Ling Feng
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jia-Ling Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jun-Hua Xiao
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan 430030, China.
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25
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Abstract
This chapter offers a brief introduction of the functions of TRPC channels in non-neuronal systems. We focus on three major organs of which the research on TRPC channels have been most focused on: kidney, heart, and lung. The chapter highlights on cellular functions and signaling pathways mediated by TRPC channels. It also summarizes several inherited diseases in humans that are related to or caused by TRPC channel mutations and malfunction. A better understanding of TRPC channels functions and the importance of TRPC channels in health and disease should lead to new insights and discovery of new therapeutic approaches for intractable disease.
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26
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Dogan M, Han YS, Delmotte P, Sieck GC. TNFα enhances force generation in airway smooth muscle. Am J Physiol Lung Cell Mol Physiol 2017; 312:L994-L1002. [PMID: 28385814 PMCID: PMC5495949 DOI: 10.1152/ajplung.00550.2016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/15/2017] [Accepted: 04/03/2017] [Indexed: 11/22/2022] Open
Abstract
Airway inflammation is a hallmark of asthma, triggering airway smooth muscle (ASM) hyperreactivity and airway remodeling. TNFα increases both agonist-induced cytosolic Ca2+ concentration ([Ca2+]cyt) and force in ASM. The effects of TNFα on ASM force may also be due to an increase in Ca2+ sensitivity, cytoskeletal remodeling, and/or changes in contractile protein content. We hypothesized that 24 h of exposure to TNFα increases ASM force by changing actin and myosin heavy chain (MyHC) content and/or polymerization. Porcine ASM strips were permeabilized with 10% Triton X-100, and force was measured in response to increasing concentrations of Ca2+ (pCa 9.0 to 4.0) in control and TNFα-treated groups. Relative phosphorylation of the regulatory myosin light chain (p-MLC) and total actin, MLC, and MyHC concentrations were quantified at pCa 9.0, 6.1, and 4.0. Actin polymerization was quantified by the ratio of filamentous to globular actin at pCa 9.0 and 4.0. For determination of total cross-bridge formation, isometric ATP hydrolysis rate at pCa 4.0 was measured using an enzyme-coupled NADH-linked fluorometric technique. Exposure to TNFα significantly increased force across the range of Ca2+ activation but did not affect the intrinsic Ca2+ sensitivity of force generation. The TNFα-induced increase in ASM force was associated with an increase in total actin, MLC, and MyHC content, as well as an increase in actin polymerization and an increase in maximum isometric ATP hydrolysis rate. The results of this study support our hypothesis that TNFα increases force generation in ASM by increasing the number of contractile units (actin-myosin content) contributing to force generation.
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Affiliation(s)
- Murat Dogan
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Young-Soo Han
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Philippe Delmotte
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Gary C Sieck
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
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27
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Yocum GT, Chen J, Choi CH, Townsend EA, Zhang Y, Xu D, Fu XW, Sanderson MJ, Emala CW. Role of transient receptor potential vanilloid 1 in the modulation of airway smooth muscle tone and calcium handling. Am J Physiol Lung Cell Mol Physiol 2017; 312:L812-L821. [PMID: 28336810 DOI: 10.1152/ajplung.00064.2017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/10/2017] [Accepted: 03/21/2017] [Indexed: 11/22/2022] Open
Abstract
Asthma is a common disorder characterized, in part, by airway smooth muscle (ASM) hyperresponsiveness. Transient receptor potential vanilloid 1 (TRPV1) is a nonselective cation channel expressed on airway nerve fibers that modulates afferent signals, resulting in cough, and potentially bronchoconstriction. In the present study, the TRPV1 transcript was detected by RT-PCR in primary cultured human ASM cells, and the TRPV1 protein was detected in ASM of human trachea by immunohistochemistry. Proximity ligation assays suggest that TRPV1 is expressed in the sarcoplasmic reticulum membrane of human ASM cells in close association with sarco/endoplasmic reticulum Ca2+-ATPase-2. In guinea pig tracheal ring organ bath experiments, the TRPV1 agonist capsaicin led to ASM contraction, but this contraction was significantly attenuated by the sodium channel inhibitor bupivacaine (n = 4, P < 0.05) and the neurokinin-2 receptor antagonist GR-159897 (n = 4, P < 0.05), suggesting that this contraction is neutrally mediated. However, pretreatment of guinea pig and human ASM in organ bath experiments with the TRPV1 antagonist capsazepine inhibited the maintenance phase of an acetylcholine-induced contraction (n = 4, P < 0.01 for both species). Similarly, capsazepine inhibited methacholine-induced contraction of peripheral airways in mouse precision-cut lung slice (PCLS) experiments (n = 4-5, P < 0.05). Although capsazepine did not inhibit store-operated calcium entry in mouse ASM cells in PCLS (n = 4-7, P = nonsignificant), it did inhibit calcium oscillations (n = 3, P < 0.001). These studies suggest that TRPV1 is expressed on ASM, including the SR, but that ASM TRPV1 activation does not play a significant role in initiation of ASM contraction. However, capsazepine does inhibit maintenance of contraction, likely by inhibiting calcium oscillations.
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Affiliation(s)
- Gene T Yocum
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, New York, New York; and
| | - Jun Chen
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Christine H Choi
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, New York, New York; and
| | - Elizabeth A Townsend
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, New York, New York; and
| | - Yi Zhang
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, New York, New York; and
| | - Dingbang Xu
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, New York, New York; and
| | - Xiao W Fu
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, New York, New York; and
| | - Michael J Sanderson
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Charles W Emala
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, New York, New York; and
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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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Wang L, Li J, Zhang J, He Q, Weng X, Huang Y, Guan M, Qiu C. Inhibition of TRPC3 downregulates airway hyperresponsiveness, remodeling of OVA-sensitized mouse. Biochem Biophys Res Commun 2016; 484:209-217. [PMID: 28034747 DOI: 10.1016/j.bbrc.2016.12.138] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 12/21/2016] [Indexed: 12/31/2022]
Abstract
Airway hyperresponsiveness (AHR), airway remodeling and inflammation are the fundamental pathological alterations that occur in asthma. Transient receptor potential canonical 3 (TRPC3) has been implicated in diverse functions of airway smooth muscle cells (ASMCs) in asthma. However, the underlying mechanisms remain incompletely understood. We investigated the mRNA and protein expression of TRPC3 in ASMCs from normal and OVA-sensitized mouse. And the effects of inhibition or knockdown of TRPC3 with Ethyl-1- (4- (2,3,3-trichloroacrylamide) phenyl) -5 - (trifluoromethyl) -1H -pyrazole -4-carboxylate (Pyr3) and lentiviral shRNA on OVA-sensitized mouse AHR, airway remodeling, circulating inflammatory cytokines, cell proliferation and migration. We found that TRPC3 mRNA and protein expression levels were significantly increased in ASMCs from OVA-sensitized mouse. Inhibiting TRPC3 with continuous subcutaneous administration of Pyr3 decreased enhanced pause (Penh) of OVA-sensitized mouse. Meanwhile, both Pyr3 and lentiviral shRNA treatment of ASMCs in OVA-sensitized mouse significantly decreased their proliferation and migration. These results suggest that TRPC3 plays a critical role in asthma and represents a promising new target for asthma treatment.
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Affiliation(s)
- Lingwei Wang
- Department of Respiratory Diseases, Second Clinical medical college (Shenzhen People's Hospital), Jinan University, Shenzhen, China
| | - Jie Li
- Department of Respiratory Diseases, Second Clinical medical college (Shenzhen People's Hospital), Jinan University, Shenzhen, China; Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, China
| | - Jian Zhang
- Research Laboratory for Reproductive Health, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Qi He
- Department of Respiratory Diseases, Second Clinical medical college (Shenzhen People's Hospital), Jinan University, Shenzhen, China
| | - Xuanwen Weng
- Department of Respiratory Diseases, Second Clinical medical college (Shenzhen People's Hospital), Jinan University, Shenzhen, China
| | - Yanmei Huang
- Department of Respiratory Diseases, Second Clinical medical college (Shenzhen People's Hospital), Jinan University, Shenzhen, China
| | - Minjie Guan
- Department of Respiratory Diseases, Second Clinical medical college (Shenzhen People's Hospital), Jinan University, Shenzhen, China
| | - Chen Qiu
- Department of Respiratory Diseases, Second Clinical medical college (Shenzhen People's Hospital), Jinan University, Shenzhen, China.
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TNF α Affects Ciliary Beat Response to Increased Viscosity in Human Pediatric Airway Epithelium. BIOMED RESEARCH INTERNATIONAL 2016; 2016:3628501. [PMID: 28025644 PMCID: PMC5153504 DOI: 10.1155/2016/3628501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/20/2016] [Accepted: 10/30/2016] [Indexed: 01/09/2023]
Abstract
In airway epithelium, mucociliary clearance (MCC) velocity depends on the ciliary beat frequency (CBF), and it is affected by mucus viscoelastic properties. Local inflammation induces secretion of cytokines (TNFα) that can alter mucus viscosity; however airway ciliated cells have an autoregulatory mechanism to prevent the collapse of CBF in response to increase in mucus viscosity, mechanism that is associated with an increment in intracellular Ca+2 level ([Ca2+]i). We studied the effect of TNFα on the autoregulatory mechanism that regulates CBF in response to increased viscosity using dextran solutions, in ciliated cells cultured from human pediatric epithelial adenoid tissue. Cultures were treated with TNFα, before and after the viscous load was changed. TNFα treatment produced a significantly larger decrease in CBF in cultures exposed to dextran. Furthermore, an increment in [Ca2+]i was observed, which was significantly larger after TNFα treatment. In conclusion, although TNFα has deleterious effects on ciliated cells in response to maintaining CBF after increasing viscous loading, it has a positive effect, since increasing [Ca2+]i may prevent the MCC collapse. These findings suggest that augmented levels of TNFα associated with an inflammatory response of the nasopharyngeal epithelium may have dual effects that contribute to maintaining the effectiveness of MCC in the upper airways.
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31
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Chen XX, Zhang JH, Pan BH, Ren HL, Feng XL, Wang JL, Xiao JH. TRPC3-mediated Ca2+ entry contributes to mouse airway smooth muscle cell proliferation induced by lipopolysaccharide. Cell Calcium 2016; 60:273-81. [DOI: 10.1016/j.ceca.2016.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 06/17/2016] [Accepted: 06/18/2016] [Indexed: 01/03/2023]
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32
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Chachi L, Gavrila A, Tliba O, Amrani Y. Abnormal corticosteroid signalling in airway smooth muscle: mechanisms and perspectives for the treatment of severe asthma. Clin Exp Allergy 2016; 45:1637-46. [PMID: 26017278 DOI: 10.1111/cea.12577] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Growing in vivo evidence supports the concept that airway smooth muscle produces various immunomodulatory factors that could contribute to asthma pathogenesis via the regulation of airway inflammation, airway narrowing and remodelling. Targeting ASM using bronchial thermoplasty has provided undeniable clinical benefits for patients with uncontrolled severe asthma who are refractory to glucocorticoid therapy. The present review will explain why the failure of glucocorticoids to adequately manage patients with severe asthma could derive from their inability to affect the immunomodulatory potential of ASM. We will support the view that ASM sensitivity to glucocorticoid therapy can be blunted in severe asthma and will describe some of the factors and mechanisms that could be responsible for glucocorticoid insensitivity.
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Affiliation(s)
- L Chachi
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK
| | - A Gavrila
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK
| | - O Tliba
- Department of Pharmaceutical Sciences, Thomas Jefferson University, Jefferson School of Pharmacy, Philadelphia, PA, USA
| | - Y Amrani
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, UK
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33
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Aravamudan B, Thompson MA, Pabelick CM, Prakash YS. Mechanisms of BDNF regulation in asthmatic airway smooth muscle. Am J Physiol Lung Cell Mol Physiol 2016; 311:L270-9. [PMID: 27317689 DOI: 10.1152/ajplung.00414.2015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 06/09/2016] [Indexed: 12/17/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF), a neurotrophin produced by airway smooth muscle (ASM), enhances inflammation effects on airway contractility, supporting the idea that locally produced growth factors influence airway diseases such as asthma. We endeavored to dissect intrinsic mechanisms regulating endogenous, as well as inflammation (TNF-α)-induced BDNF secretion in ASM of nonasthmatic vs. asthmatic humans. We focused on specific Ca(2+) regulation- and inflammation-related signaling cascades and quantified BDNF secretion. We find that TNF-α enhances BDNF release by ASM cells, via several mechanisms relevant to asthma, including transient receptor potential channels TRPC3 and TRPC6 (but not TRPC1), ERK 1/2, PI3K, PLC, and PKC cascades, Rho kinase, and transcription factors cAMP response element binding protein and nuclear factor of activated T cells. Basal BDNF expression and secretion are elevated in asthmatic ASM and increase further with TNF-α exposure, involving many of these regulatory mechanisms. We conclude that airway BDNF secretion is regulated at multiple levels, providing a basis for autocrine effects of BDNF under conditions of inflammation and disease, with potential downstream influences on contractility and remodeling.
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Affiliation(s)
| | | | - Christina M Pabelick
- Departments of Anesthesiology, Mayo Clinic, Rochester, Minnesota; and Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Y S Prakash
- Departments of Anesthesiology, Mayo Clinic, Rochester, Minnesota; and Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
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Ghavideldarestani M, Atkin SL, Leese HJ, Sturmey RG. Expression and function of transient receptor potential channels in the female bovine reproductive tract. Theriogenology 2016; 86:551-61. [PMID: 27001231 DOI: 10.1016/j.theriogenology.2016.02.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 01/07/2016] [Accepted: 02/06/2016] [Indexed: 12/29/2022]
Abstract
The epithelium lining the oviduct is critical for early reproductive events, many of which are mediated via intracellular calcium ions. Despite this, little is known about the regulation of calcium homeostasis in the oviductal epithelium. Epithelial transient receptor potential channels (TRPCs) modulate calcium flux in other tissues, and their expression and functional regulation have therefore been examined using the bovine oviduct as a model for the human. The effects of FSH, LH, 17β-estradiol, and progesterone on TRPCs expression and intracellular calcium flux were determined. Transient receptor potential channels 1, 2, 3, 4, and 6 were expressed in the bovine reproductive tract, and their gene expression varied throughout the estrous cycle. In more detailed studies undertaken on TRPC1 and 6, we show that protein expression varied through the estrus cycle; specifically, 17β-estradiol, FSH, and LH individually and in combination upregulated TRPC1 and 6 expression in cultured bovine oviduct epithelial cells although progesterone antagonized these effects. Functional studies showed changes in calcium mobilization in bovine oviduct epithelial cells were dependent on TRPCs. In conclusion, TRPC1, 2, 3, 4, and 6 are present in the epithelium lining the bovine oviduct, and TRPC1 and 6 vary through the estrous cycle suggesting an important role in early reproductive function.
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Affiliation(s)
- Maryam Ghavideldarestani
- Centre for Cardiovascular and Metabolic Research, Hull York Medical School, University of Hull, Hull, UK.
| | - Stephen L Atkin
- Centre for Cardiovascular and Metabolic Research, Hull York Medical School, University of Hull, Hull, UK
| | - Henry J Leese
- Centre for Cardiovascular and Metabolic Research, Hull York Medical School, University of Hull, Hull, UK
| | - Roger G Sturmey
- Centre for Cardiovascular and Metabolic Research, Hull York Medical School, University of Hull, Hull, UK
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35
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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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36
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Song T, Hao Q, Zheng YM, Liu QH, Wang YX. Inositol 1,4,5-trisphosphate activates TRPC3 channels to cause extracellular Ca2+ influx in airway smooth muscle cells. Am J Physiol Lung Cell Mol Physiol 2015; 309:L1455-66. [PMID: 26453517 DOI: 10.1152/ajplung.00148.2015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 10/04/2015] [Indexed: 11/22/2022] Open
Abstract
Transient receptor potential-3 (TRPC3) channels play a predominant role in forming nonselective cation channels (NSCCs) in airway smooth muscle cells (ASMCs) and are significantly increased in their activity and expression in asthmatic ASMCs. To extend these novel findings, we have explored the regulatory mechanisms that control the activity of TRPC3 channels. Our data for the first time reveal that inositol 1,4,5-trisphosphate (IP3), an important endogenous signaling molecule, can significantly enhance the activity of single NSCCs in ASMCs. The analog of diacylglycerol (DAG; another endogenous signaling molecule), 1-oleyl-2-acetyl-sn-glycerol (OAG), 1-stearoyl-2-arachidonoyl-sn-glycerol (SAG), and 1-stearoyl-2-linoleoyl-sn-glycerol (SLG) all augment NSCC activity. The effects of IP3 and OAG are fully abolished by lentiviral short-hairpin (sh)RNA-mediated TRPC3 channel knockdown (KD). The stimulatory effect of IP3 is eliminated by heparin, an IP3 receptor (IP3R) antagonist that blocks the IP3-binding site, but not by xestospongin C, the IP3R antagonist that has no effect on the IP3-binding site. Lentiviral shRNA-mediated KD of IP3R1, IP3R2, or IP3R3 does not alter the excitatory effect of IP3. TRPC3 channel KD greatly inhibits IP3-induced increase in intracellular Ca(2+) concentration. IP3R1 KD produces a similar inhibitory effect. TRPC3 channel and IP3R1 KD both diminish the muscarinic receptor agonist methacholine-evoked Ca(2+) responses. Taking these findings together, we conclude that IP3, the important intracellular second messenger, may activate TRPC3 channels to cause extracellular Ca(2+) influx, in addition to opening IP3Rs to induce intracellular Ca(2+) release. This novel extracellular Ca(2+) entry route may play a significant role in mediating IP3-mediated numerous cellular responses in ASMCs and other cells.
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Affiliation(s)
- Tengyao Song
- Center for Cardiovascular Sciences, Albany Medical College, Albany, New York; and
| | - Qiongyu Hao
- Center for Cardiovascular Sciences, Albany Medical College, Albany, New York; and
| | - Yun-Min Zheng
- Center for Cardiovascular Sciences, Albany Medical College, Albany, New York; and
| | - Qing-Hua Liu
- Center for Cardiovascular Sciences, Albany Medical College, Albany, New York; and Institute for Medical Biology, College of Life Sciences, South-Central University for Nationalities, Wuhan, China
| | - Yong-Xiao Wang
- Center for Cardiovascular Sciences, Albany Medical College, Albany, New York; and
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Song T, Zheng YM, Vincent PA, Cai D, Rosenberg P, Wang YX. Canonical transient receptor potential 3 channels activate NF-κB to mediate allergic airway disease via PKC-α/IκB-α and calcineurin/IκB-β pathways. FASEB J 2015; 30:214-29. [PMID: 26373801 DOI: 10.1096/fj.15-274860] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 08/31/2015] [Indexed: 11/11/2022]
Abstract
The purpose of this study was to determine the role of canonical transient receptor potential 3 (TRPC3) channel in allergen-induced airway disease (AIAD) and its underlying signaling mechanisms. The procedures included (1) intravenous injection of lentiviral TRPC3 channel or nonsilencing short hairpin ribonucleic acid (shRNA) to make the channel knockdown (KD) or control mice, (2) allergen sensitization/challenge to induce AIAD, (3) patch-clamp recording and Ca(2+) imaging to examine the channel activity, and (4) gene manipulations and other methods to determine the underlying signaling mechanisms. The findings are that (1) intravenous or intranasal delivery of TRPC3 channel lentiviral shRNAs or blocker 1-[4-[(2,3,3-trichloro-1-oxo-2-propen-1-yl)amino]phenyl]-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid prevents AIAD in mice, (2) TRPC3 channel KD and overexpression, respectively, blocks and augments protein kinase C-α/nuclear factor of κ light polypeptide gene enhancer in B-cell inhibitor-α (PKC-α/IκB-α)-mediated or calcineurin/IκB-β-dependent, NF-κB-dependent allergen-induced airway smooth muscle cell (ASMC) hyperproliferation and cyclin D1 (an important cell proliferation molecule) induction, and (3) the changes of the major molecules of the PKC-α/IκBα- and calcineurin/IκB-β-dependent NF-κB signaling pathways are also observed in asthmatic human ASMCs. The conclusions are that TRPC3 channels plays an essential role in AIAD via the PKC-α/IκB-α- and calcineurin/IκB-β-dependent NF-κB signaling pathways, and lentiviral shRNA or inhibitor of TRPC3 channels may become novel and effective treatments for AIAD.
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Affiliation(s)
- Tengyao Song
- *Center for Cardiovascular Sciences, Albany Medical College, Albany, New York, USA; Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA; and Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Yun-Min Zheng
- *Center for Cardiovascular Sciences, Albany Medical College, Albany, New York, USA; Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA; and Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Peter A Vincent
- *Center for Cardiovascular Sciences, Albany Medical College, Albany, New York, USA; Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA; and Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Dongsheng Cai
- *Center for Cardiovascular Sciences, Albany Medical College, Albany, New York, USA; Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA; and Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Paul Rosenberg
- *Center for Cardiovascular Sciences, Albany Medical College, Albany, New York, USA; Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA; and Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
| | - Yong-Xiao Wang
- *Center for Cardiovascular Sciences, Albany Medical College, Albany, New York, USA; Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA; and Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
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38
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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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Zholos AV. TRP Channels in Respiratory Pathophysiology: the Role of Oxidative, Chemical Irritant and Temperature Stimuli. Curr Neuropharmacol 2015; 13:279-91. [PMID: 26411771 PMCID: PMC4598440 DOI: 10.2174/1570159x13666150331223118] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/09/2015] [Accepted: 03/09/2015] [Indexed: 12/13/2022] Open
Abstract
There is rapidly growing evidence indicating multiple and important roles of Ca(2+)- permeable cation TRP channels in the airways, both under normal and disease conditions. The aim of this review was to summarize the current knowledge of TRP channels in sensing oxidative, chemical irritant and temperature stimuli by discussing expression and function of several TRP channels in relevant cell types within the respiratory tract, ranging from sensory neurons to airway smooth muscle and epithelial cells. Several of these channels, such as TRPM2, TRPM8, TRPA1 and TRPV1, are discussed in much detail to show that they perform diverse, and often overlapping or contributory, roles in airway hyperreactivity, inflammation, asthma, chronic obstructive pulmonary disease and other respiratory disorders. These include TRPM2 involvement in the disruption of the bronchial epithelial tight junctions during oxidative stress, important roles of TRPA1 and TRPV1 channels in airway inflammation, hyperresponsiveness, chronic cough, and hyperplasia of airway smooth muscles, as well as TRPM8 role in COPD and mucus hypersecretion. Thus, there is increasing evidence that TRP channels not only function as an integral part of the important endogenous protective mechanisms of the respiratory tract capable of detecting and ensuring proper physiological responses to various oxidative, chemical irritant and temperature stimuli, but that altered expression, activation and regulation of these channels may also contribute to the pathogenesis of respiratory diseases.
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Affiliation(s)
- Alexander V Zholos
- Department of Biophysics, Educational and Scientific Centre "Institute of Biology", Taras Shevchenko Kiev National University, 2 Academician Glushkov Avenue, Kiev 03022, Ukraine.
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40
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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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41
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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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42
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Nilius B, Szallasi A. Transient Receptor Potential Channels as Drug Targets: From the Science of Basic Research to the Art of Medicine. Pharmacol Rev 2014; 66:676-814. [DOI: 10.1124/pr.113.008268] [Citation(s) in RCA: 348] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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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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Roberge S, Roussel J, Andersson DC, Meli AC, Vidal B, Blandel F, Lanner JT, Le Guennec JY, Katz A, Westerblad H, Lacampagne A, Fauconnier J. TNF-α-mediated caspase-8 activation induces ROS production and TRPM2 activation in adult ventricular myocytes. Cardiovasc Res 2014; 103:90-9. [PMID: 24802330 DOI: 10.1093/cvr/cvu112] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIMS TRPM2 is a Ca(2+)-permeable cationic channel of the transient receptor potential (TRP) superfamily that is linked to apoptotic signalling. Its involvement in cardiac pathophysiology is unknown. The aim of this study was to determine whether the pro-apoptotic cytokine tumour necrosis factor-α (TNF-α) induces a TRPM2-like current in murine ventricular cardiomyocytes. METHODS AND RESULTS Adult isolated cardiomyocytes from C57BL/6 mice were exposed to TNF-α (10 ng/mL). Western blotting showed TRPM2 expression, which was not changed after TNF-α incubation. Using patch clamp in whole-cell configuration, a non-specific cation current was recorded after exposure to TNF-α (ITNF), which reached maximal steady-state amplitude after 3 h incubation. ITNF was inhibited by the caspase-8 inhibitor z-IETD-fmk, the antioxidant N-acetylcysteine, and the TRPM2 inhibitors clotrimazole, N-(P-amylcinnamoyl) anthranilic acid and flufenamic acid (FFA). TRPM2 has previously been shown to be activated by ADP-ribose, which is produced by poly(ADP-ribose) polymerase 1 (PARP-1). TNF-α exposure resulted in increased poly-ADP-ribosylation of proteins and the PARP-1 inhibitor 3-aminobenzamide inhibited ITNF. TNF-α exposure increased the mitochondrial production of reactive oxygen species (ROS; measured with the fluorescent indicator MitoSOX Red), and this increase was blocked by the caspase-8 inhibitor z-IETD-fmk. Clotrimazole and TRPM2 inhibitory antibody decreased TNF-α-induced cardiomyocyte death. CONCLUSION These results demonstrate that TNF-α induces a TRPM2 current in adult ventricular cardiomyocytes. TNF-α induces caspase-8 activation leading to ROS production, PARP-1 activation, and ADP-ribose production. TNF-induced TRPM2 activation may contribute to cardiomyocyte cell death.
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Affiliation(s)
- Stéphanie Roberge
- INSERM U1046, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Julien Roussel
- INSERM U1046, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Daniel C Andersson
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden Department of Medicine, Karolinska Institutet, Stockholm, Sweden Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden
| | - Albano C Meli
- INSERM U1046, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Bastien Vidal
- INSERM U1046, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Florence Blandel
- INSERM U1046, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Johanna T Lanner
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Jean-Yves Le Guennec
- INSERM U1046, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Abram Katz
- Department of Physical Therapy, School of Health Sciences, Ariel University, Ariel, Israel
| | - Håkan Westerblad
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Alain Lacampagne
- INSERM U1046, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Jérémy Fauconnier
- INSERM U1046, Université Montpellier 1, Université Montpellier 2, Montpellier, France
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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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Prakash YS, Martin RJ. Brain-derived neurotrophic factor in the airways. Pharmacol Ther 2014; 143:74-86. [PMID: 24560686 DOI: 10.1016/j.pharmthera.2014.02.006] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 02/10/2014] [Indexed: 12/13/2022]
Abstract
In addition to their well-known roles in the nervous system, there is increasing recognition that neurotrophins such as brain derived neurotrophic factor (BDNF) as well as their receptors are expressed in peripheral tissues including the lung, and can thus potentially contribute to both normal physiology and pathophysiology of several diseases. The relevance of this family of growth factors lies in emerging clinical data indicating altered neurotrophin levels and function in a range of diseases including neonatal and adult asthma, sinusitis, influenza, and lung cancer. The current review focuses on 1) the importance of BDNF expression and signaling mechanisms in early airway and lung development, critical to both normal neonatal lung function and also its disruption in prematurity and insults such as inflammation and infection; 2) how BDNF, potentially derived from airway nerves modulate neurogenic control of airway tone, a key aspect of airway reflexes as well as dysfunctional responses to allergic inflammation; 3) the emerging idea that local BDNF production by resident airway cells such as epithelium and airway smooth muscle can contribute to normal airway structure and function, and to airway hyperreactivity and remodeling in diseases such as asthma. Furthermore, given its pleiotropic effects in the airway, BDNF may be a novel and appealing therapeutic target.
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Affiliation(s)
- Y S Prakash
- Department of Anesthesiology, Mayo Clinic College of Medicine, Rochester, MN 55905, United States; Department of Physiology & Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN 55905, United States.
| | - Richard J Martin
- Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, OH 44106, United States
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Thompson MA, Prakash YS, Pabelick CM. The role of caveolae in the pathophysiology of lung diseases. Expert Rev Respir Med 2013; 8:111-22. [PMID: 24308657 DOI: 10.1586/17476348.2014.855610] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Caveolae are flask-shaped plasma membrane invaginations formed by constitutive caveolin proteins and regulatory cavin proteins. Caveolae harbor a range of signaling components such as receptors, ion channels and regulatory molecules. There is now increasing evidence that caveolins and cavins play an important role in a variety of diseases. However, the mechanisms by which these caveolar proteins affect lung health and disease are still under investigation, with emerging data suggesting complex roles in disease pathophysiology. This review summarizes the current state of understanding of how caveolar proteins contribute to lung structure and function and how their altered expression and/or function can influence lung diseases.
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48
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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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49
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Chachi L, Shikotra A, Duffy SM, Tliba O, Brightling C, Bradding P, Amrani Y. Functional KCa3.1 channels regulate steroid insensitivity in bronchial smooth muscle cells. THE JOURNAL OF IMMUNOLOGY 2013; 191:2624-2636. [PMID: 23904164 DOI: 10.4049/jimmunol.1300104] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Identifying the factors responsible for relative glucocorticosteroid (GC) resistance present in patients with severe asthma and finding tools to reverse it are of paramount importance. In asthma we see in vivo evidence of GC-resistant pathways in airway smooth muscle (ASM) bundles that can be modeled in vitro by exposing cultured ASM cells to TNF-α/IFN-γ. This action drives GC insensitivity via protein phosphatase 5-dependent impairment of GC receptor phosphorylation. In this study, we investigated whether KCa3.1 ion channels modulate the activity of GC-resistant pathways using our ASM model of GC insensitivity. Immunohistochemical staining of endobronchial biopsies revealed that KCa3.1 channels are localized to the plasma membrane and nucleus of ASM in both healthy controls and asthmatic patients, irrespective of disease severity. Western blot assays and immunofluorescence staining confirmed the nuclear localization of KCa3.1 channels in ASM cells. The functional importance of KCa3.1 channels in the regulation of GC-resistant chemokines induced by TNF-α/IFN-γ was assessed using complementary inhibitory strategies, including KCa3.1 blockers (TRAM-34 and ICA-17043) or KCa3.1-specific small hairpin RNA delivered by adenoviruses. KCa3.1 channel blockade led to a significant reduction of fluticasone-resistant CX3CL1, CCL5, and CCL11 gene and protein expression. KCa3.1 channel blockade also restored fluticasone-induced GC receptor-α phosphorylation at Ser(211) and transactivation properties via the suppression of cytokine-induced protein phosphatase 5 expression. The effect of KCa3.1 blockade was evident in ASM cells from both healthy controls and asthmatic subjects. In summary, KCa3.1 channels contribute to the regulation of GC-resistant inflammatory pathways in ASM cells: blocking KCa3.1 channels may enhance corticosteroid activity in severe asthma.
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Affiliation(s)
- Latifa Chachi
- Department of Infection, Immunity and Inflammation, University of Leicester, University Road, Leicester, LE1 7RH, U.K
| | - Aarti Shikotra
- Department of Infection, Immunity and Inflammation, University of Leicester, University Road, Leicester, LE1 7RH, U.K
| | - S Mark Duffy
- Department of Infection, Immunity and Inflammation, University of Leicester, University Road, Leicester, LE1 7RH, U.K
| | - Omar Tliba
- Department of Pharmaceutical Sciences, Thomas Jefferson University, Jefferson School of Pharmacy, Philadelphia, PA, USA
| | - Christopher Brightling
- Department of Infection, Immunity and Inflammation, University of Leicester, University Road, Leicester, LE1 7RH, U.K
| | - Peter Bradding
- Department of Infection, Immunity and Inflammation, University of Leicester, University Road, Leicester, LE1 7RH, U.K
| | - Yassine Amrani
- Department of Infection, Immunity and Inflammation, University of Leicester, University Road, Leicester, LE1 7RH, U.K
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50
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Vohra PK, Thompson MA, Sathish V, Kiel A, Jerde C, Pabelick CM, Singh BB, Prakash YS. TRPC3 regulates release of brain-derived neurotrophic factor from human airway smooth muscle. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:2953-2960. [PMID: 23899746 DOI: 10.1016/j.bbamcr.2013.07.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 07/21/2013] [Accepted: 07/23/2013] [Indexed: 12/31/2022]
Abstract
Exogenous brain-derived neurotrophic factor (BDNF) enhances Ca(2+) signaling and cell proliferation in human airway smooth muscle (ASM), especially with inflammation. Human ASM also expresses BDNF, raising the potential for autocrine/paracrine effects. The mechanisms by which ASM BDNF secretion occurs are not known. Transient receptor potential channels (TRPCs) regulate a variety of intracellular processes including store-operated Ca(2+) entry (SOCE; including in ASM) and secretion of factors such as cytokines. In human ASM, we tested the hypothesis that TRPC3 regulates BDNF secretion. At baseline, intracellular BDNF was present, and BDNF secretion was detectable by enzyme linked immunosorbent assay (ELISA) of cell supernatants or by real-time fluorescence imaging of cells transfected with GFP-BDNF vector. Exposure to the pro-inflammatory cytokine tumor necrosis factor-alpha (TNFα) (20ng/ml, 48h) or a mixture of allergens (ovalbumin, house dust mite, Alternaria, and Aspergillus extracts) significantly enhanced BDNF secretion and increased TRPC3 expression. TRPC3 knockdown (siRNA or inhibitor Pyr3; 10μM) blunted BDNF secretion, and prevented inflammation effects. Chelation of extracellular Ca(2+) (EGTA; 1mM) or intracellular Ca(2+) (BAPTA; 5μM) significantly reduced secreted BDNF, as did the knockdown of SOCE proteins STIM1 and Orai1 or plasma membrane caveolin-1. Functionally, secreted BDNF had autocrine effects suggested by phosphorylation of high-affinity tropomyosin-related kinase TrkB receptor, prevented by chelating extracellular BDNF with chimeric TrkB-Fc. These data emphasize the role of TRPC3 and Ca(2+) influx in the regulation of BDNF secretion by human ASM and the enhancing effects of inflammation. Given the BDNF effects on Ca(2+) and cell proliferation, BDNF secretion may contribute to altered airway structure and function in diseases such as asthma.
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Affiliation(s)
- Pawan K Vohra
- Department of Anesthesiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Michael A Thompson
- Department of Anesthesiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Venkatachalem Sathish
- Department of Anesthesiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA; Department of Physiology & Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Alexander Kiel
- Department of Anesthesiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Calvin Jerde
- Department of Anesthesiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Christina M Pabelick
- Department of Anesthesiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA; Department of Physiology & Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Brij B Singh
- Department of Biochemistry and Molecular Biology, University of North Dakota, 264 Centennial Dr, Grand Forks, ND 58202, USA
| | - Y S Prakash
- Department of Anesthesiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA; Department of Physiology & Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
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