1
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Yang W, Cerier EJ, Núñez-Santana FL, Wu Q, Yan Y, Kurihara C, Liu X, Yeldandi A, Khurram N, Avella-Patino D, Sun H, Budinger GS, Kreisel D, Mohanakumar T, Lecuona E, Bharat A. IL-1β-dependent extravasation of preexisting lung-restricted autoantibodies during lung transplantation activates complement and mediates primary graft dysfunction. J Clin Invest 2022; 132:157975. [PMID: 36250462 PMCID: PMC9566897 DOI: 10.1172/jci157975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
Preexisting lung-restricted autoantibodies (LRAs) are associated with a higher incidence of primary graft dysfunction (PGD), although it remains unclear whether LRAs can drive its pathogenesis. In syngeneic murine left lung transplant recipients, preexisting LRAs worsened graft dysfunction, which was evident by impaired gas exchange, increased pulmonary edema, and activation of damage-associated pathways in lung epithelial cells. LRA-mediated injury was distinct from ischemia-reperfusion injury since deletion of donor nonclassical monocytes and host neutrophils could not prevent graft dysfunction in LRA-pretreated recipients. Whole LRA IgG molecules were necessary for lung injury, which was mediated by the classical and alternative complement pathways and reversed by complement inhibition. However, deletion of Fc receptors in donor macrophages or mannose-binding lectin in recipient mice failed to rescue lung function. LRA-mediated injury was localized to the transplanted lung and dependent on IL-1β-mediated permeabilization of pulmonary vascular endothelium, which allowed extravasation of antibodies. Genetic deletion or pharmacological inhibition of IL-1R in the donor lungs prevented LRA-induced graft injury. In humans, preexisting LRAs were an independent risk factor for severe PGD and could be treated with plasmapheresis and complement blockade. We conclude that preexisting LRAs can compound ischemia-reperfusion injury to worsen PGD for which complement inhibition may be effective.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - G.R. Scott Budinger
- Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Daniel Kreisel
- Departments of Surgery, Pathology & Immunology, Washington University, St. Louis, Missouri, USA
| | | | | | - Ankit Bharat
- Division of Thoracic Surgery
- Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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2
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Querrey M, Chiu S, Lecuona E, Wu Q, Sun H, Anderson M, Kelly M, Ravi S, Misharin AV, Kreisel D, Bharat A, Budinger GS. CD11b suppresses TLR activation of nonclassical monocytes to reduce primary graft dysfunction after lung transplantation. J Clin Invest 2022; 132:157262. [PMID: 35838047 PMCID: PMC9282933 DOI: 10.1172/jci157262] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 05/25/2022] [Indexed: 02/03/2023] Open
Abstract
Primary graft dysfunction (PGD) is the leading cause of postoperative mortality in lung transplant recipients and the most important risk factor for development of chronic lung allograft dysfunction. The mechanistic basis for the variability in the incidence and severity of PGD between lung transplant recipients is not known. Using a murine orthotopic vascularized lung transplant model, we found that redundant activation of Toll-like receptors 2 and 4 (TLR2 and -4) on nonclassical monocytes activates MyD88, inducing the release of the neutrophil attractant chemokine CXCL2. Deletion of Itgam (encodes CD11b) in nonclassical monocytes enhanced their production of CXCL2 and worsened PGD, while a CD11b agonist, leukadherin-1, administered only to the donor lung prior to lung transplantation, abrogated CXCL2 production and PGD. The damage-associated molecular pattern molecule HMGB1 was increased in peripheral blood samples from patients undergoing lung transplantation after reperfusion and induced CXCL2 production in nonclassical monocytes via TLR4/MyD88. An inhibitor of HMGB1 administered to the donor and recipient prior to lung transplantation attenuated PGD. Our findings suggest that CD11b acts as a molecular brake to prevent neutrophil recruitment by nonclassical monocytes following lung transplantation, revealing an attractive therapeutic target in the donor lung to prevent PGD in lung transplant recipients.
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Affiliation(s)
- Melissa Querrey
- Division of Pulmonary and Critical Care Medicine and,Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Stephen Chiu
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Emilia Lecuona
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Qiang Wu
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Haiying Sun
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Megan Anderson
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Megan Kelly
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Sowmya Ravi
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | | | - Daniel Kreisel
- Department of Surgery, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Ankit Bharat
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - G.R. Scott Budinger
- Division of Pulmonary and Critical Care Medicine and,Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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3
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Yang W, Chiu S, Querrey M, Liu X, Wu Q, Cerier E, Islam MBAR, Schwulst SJ, Budinger GRS, Mohanakumar T, Lecuona E, Bharat A. Nonclassical Monocytes Promote Edema in Lung Allografts from Traumatic Brain Injury Donors. Am J Respir Cell Mol Biol 2021; 64:391-394. [PMID: 33646091 DOI: 10.1165/rcmb.2020-0137le] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Wenbin Yang
- Northwestern University Chicago, Illinois and
| | | | | | | | - Qiang Wu
- Northwestern University Chicago, Illinois and
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4
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Kurihara C, Lecuona E, Wu Q, Yang W, Núñez-Santana FL, Akbarpour M, Liu X, Ren Z, Li W, Querrey M, Ravi S, Anderson ML, Cerier E, Sun H, Kelly ME, Abdala-Valencia H, Shilatifard A, Mohanakumar T, Budinger GRS, Kreisel D, Bharat A. Crosstalk between nonclassical monocytes and alveolar macrophages mediates transplant ischemia-reperfusion injury through classical monocyte recruitment. JCI Insight 2021; 6:147282. [PMID: 33621212 PMCID: PMC8026186 DOI: 10.1172/jci.insight.147282] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/17/2021] [Indexed: 12/24/2022] Open
Abstract
Primary graft dysfunction (PGD) is the predominant cause of early graft loss following lung transplantation. We recently demonstrated that donor pulmonary intravascular nonclassical monocytes (NCM) initiate neutrophil recruitment. Simultaneously, host-origin classical monocytes (CM) permeabilize the vascular endothelium to allow neutrophil extravasation necessary for PGD. Here, we show that a CCL2-CCR2 axis is necessary for CM recruitment. Surprisingly, although intravital imaging and multichannel flow cytometry revealed that depletion of donor NCM abrogated CM recruitment, single cell RNA sequencing identified donor alveolar macrophages (AM) as predominant CCL2 secretors. Unbiased transcriptomic analysis of murine tissues combined with murine KOs and chimeras indicated that IL-1β production by donor NCM was responsible for the early activation of AM and CCL2 release. IL-1β production by NCM was NLRP3 inflammasome dependent and inhibited by treatment with a clinically approved sulphonylurea. Production of CCL2 in the donor AM occurred through IL-1R-dependent activation of the PKC and NF-κB pathway. Accordingly, we show that IL-1β-dependent paracrine interaction between donor NCM and AM leads to recruitment of recipient CM necessary for PGD. Since depletion of donor NCM, IL-1β, or IL-1R antagonism and inflammasome inhibition abrogated recruitment of CM and PGD and are feasible using FDA-approved compounds, our findings may have potential for clinical translation.
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Affiliation(s)
| | | | - Qiang Wu
- Division of Thoracic Surgery and
| | | | | | | | | | - Ziyou Ren
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Wenjun Li
- Department of Surgery, Washington University in St. Louis, St. Louis, Missouri, USA
| | | | | | | | | | | | | | - Hiam Abdala-Valencia
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Ali Shilatifard
- Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | | | - G R Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Daniel Kreisel
- Department of Surgery, Washington University in St. Louis, St. Louis, Missouri, USA.,Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, Missouri, USA
| | - Ankit Bharat
- Division of Thoracic Surgery and.,Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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5
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Akbarpour M, Lecuona E, Chiu SF, Wu Q, Querrey M, Fernandez R, Núñez-Santana FL, Sun H, Ravi S, Kurihara C, Walter JM, Joshi N, Ren Z, Roberts SC, Hauser A, Kreisel D, Li W, Chandel NS, Misharin AV, Mohanakumar T, Budinger GRS, Bharat A. Residual endotoxin induces primary graft dysfunction through ischemia/reperfusion-primed alveolar macrophages. J Clin Invest 2021; 130:4456-4469. [PMID: 32692317 DOI: 10.1172/jci135838] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 05/13/2020] [Indexed: 12/12/2022] Open
Abstract
Despite the widespread use of antibiotics, bacterial pneumonias in donors strongly predispose to the fatal syndrome of primary graft dysfunction (PGD) following lung transplantation. We report that bacterial endotoxin persists in human donor lungs after pathogen is cleared with antibiotics and is associated with neutrophil infiltration and PGD. In mouse models, depletion of tissue-resident alveolar macrophages (TRAMs) attenuated neutrophil recruitment in response to endotoxin as shown by compartmental staining and intravital imaging. Bone marrow chimeric mice revealed that neutrophils were recruited by TRAM through activation of TLR4 in a MyD88-dependent manner. Intriguingly, low levels of endotoxin, insufficient to cause donor lung injury, promoted TRAM-dependent production of CXCL2, increased neutrophil recruitment, and led to PGD, which was independent of donor NCMs. Reactive oxygen species (ROS) increased in human donor lungs starting from the warm-ischemia phase and were associated with increased transcription and translocation to the plasma membrane of TLR4 in donor TRAMs. Consistently, scavenging ROS or inhibiting their production to prevent TLR4 transcription/translocation or blockade of TLR4 or coreceptor CD14 on donor TRAMs prevented neutrophil recruitment in response to endotoxin and ameliorated PGD. Our studies demonstrate that residual endotoxin after successful treatment of donor bacterial pneumonia promotes PGD through ischemia/reperfusion-primed donor TRAMs.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Nikita Joshi
- Division of Pulmonary and Critical Care Medicine, and
| | - Ziyou Ren
- Division of Pulmonary and Critical Care Medicine, and
| | - Scott C Roberts
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Alan Hauser
- Division of Pulmonary and Critical Care Medicine, and.,Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Daniel Kreisel
- Department of Surgery and.,Department of Pathology and Immunology, Washington University in St. Louis, St. Louis, Missouri, USA
| | | | | | | | | | | | - Ankit Bharat
- Division of Thoracic Surgery.,Division of Pulmonary and Critical Care Medicine, and
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6
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Ceco E, Celli D, Weinberg S, Shigemura M, Welch LC, Volpe L, Chandel NS, Bharat A, Lecuona E, Sznajder JI. Elevated CO 2 Levels Delay Skeletal Muscle Repair by Increasing Fatty Acid Oxidation. Front Physiol 2021; 11:630910. [PMID: 33551852 PMCID: PMC7859333 DOI: 10.3389/fphys.2020.630910] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 12/24/2020] [Indexed: 11/16/2022] Open
Abstract
Muscle dysfunction often occurs in patients with chronic obstructive pulmonary diseases (COPD) and affects ventilatory and non-ventilatory skeletal muscles. We have previously reported that hypercapnia (elevated CO2 levels) causes muscle atrophy through the activation of the AMPKα2-FoxO3a-MuRF1 pathway. In the present study, we investigated the effect of normoxic hypercapnia on skeletal muscle regeneration. We found that mouse C2C12 myoblasts exposed to elevated CO2 levels had decreased fusion index compared to myoblasts exposed to normal CO2. Metabolic analyses of C2C12 myoblasts exposed to high CO2 showed increased oxidative phosphorylation due to increased fatty acid oxidation. We utilized the cardiotoxin-induced muscle injury model in mice exposed to normoxia and 10% CO2 for 21 days and observed that muscle regeneration was delayed. High CO2-delayed differentiation in both mouse C2C12 myoblasts and skeletal muscle after injury and was restored to control levels when cells or mice were treated with a carnitine palmitoyltransfearse-1 (CPT1) inhibitor. Taken together, our data suggest that hypercapnia leads to changes in the metabolic activity of skeletal muscle cells, which results in impaired muscle regeneration and recovery after injury.
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Affiliation(s)
- Ermelinda Ceco
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Diego Celli
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Samuel Weinberg
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Masahiko Shigemura
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Lynn C Welch
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Lena Volpe
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Navdeep S Chandel
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Ankit Bharat
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.,Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Emilia Lecuona
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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7
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Bharat A, Angulo M, Sun H, Akbarpour M, Alberro A, Cheng Y, Shigemura M, Berdnikovs S, Welch LC, Kanter JA, Budinger GRS, Lecuona E, Sznajder JI. High CO 2 Levels Impair Lung Wound Healing. Am J Respir Cell Mol Biol 2020; 63:244-254. [PMID: 32275835 DOI: 10.1165/rcmb.2019-0354oc] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Delayed lung repair leads to alveolopleural fistulae, which are a major cause of morbidity after lung resections. We have reported that intrapleural hypercapnia is associated with delayed lung repair after lung resection. Here, we provide new evidence that hypercapnia delays wound closure of both large airway and alveolar epithelial cell monolayers because of inhibition of epithelial cell migration. Cell migration and airway epithelial wound closure were dependent on Rac1-GTPase activation, which was suppressed by hypercapnia directly through the upregulation of AMP kinase and indirectly through inhibition of injury-induced NF-κB-mediated CXCL12 (pleural CXC motif chemokine 12) release, respectively. Both these pathways were independently suppressed, because dominant negative AMP kinase rescued the effects of hypercapnia on Rac1-GTPase in uninjured resting cells, whereas proteasomal inhibition reversed the NF-κB-mediated CXCL12 release during injury. Constitutive overexpression of Rac1-GTPase rescued the effects of hypercapnia on both pathways as well as on wound healing. Similarly, exogenous recombinant CXCL12 reversed the effects of hypercapnia through Rac1-GTPase activation by its receptor, CXCR4. Moreover, CXCL12 transgenic murine recipients of orthotopic tracheal transplantation were protected from hypercapnia-induced inhibition of tracheal epithelial cell migration and wound repair. In patients undergoing lobectomy, we found inverse correlation between intrapleural carbon dioxide and pleural CXCL12 levels as well as between CXCL12 levels and alveolopleural leak. Accordingly, we provide first evidence that high carbon dioxide levels impair lung repair by inhibiting epithelial cell migration through two distinct pathways, which can be restored by recombinant CXCL12.
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Affiliation(s)
- Ankit Bharat
- Division of Thoracic Surgery.,Division of Pulmonary and Critical Care Medicine, and
| | - Martín Angulo
- Division of Pulmonary and Critical Care Medicine, and.,Pathophysiology Department, School of Medicine, Universidad de la República, Montevideo, Uruguay; and
| | | | | | - Andrés Alberro
- Division of Pulmonary and Critical Care Medicine, and.,Department of Internal Medicine, Justus Liebig University, Universities of Giessen and Marburg Lung Center, Giessen, Germany
| | - Yuan Cheng
- Division of Pulmonary and Critical Care Medicine, and
| | | | - Sergejs Berdnikovs
- Division of Allergy and Immunology, Northwestern University, Chicago, Illinois
| | - Lynn C Welch
- Division of Pulmonary and Critical Care Medicine, and
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8
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Runyan CE, Welch LC, Lecuona E, Shigemura M, Amarelle L, Abdala‐Valencia H, Joshi N, Lu Z, Nam K, Markov NS, McQuattie‐Pimentel AC, Piseaux‐Aillon R, Politanska Y, Sichizya L, Watanabe S, Williams KJ, Budinger GRS, Sznajder JI, Misharin AV. Impaired phagocytic function in CX3CR1 + tissue-resident skeletal muscle macrophages prevents muscle recovery after influenza A virus-induced pneumonia in old mice. Aging Cell 2020; 19:e13180. [PMID: 32720752 PMCID: PMC7587460 DOI: 10.1111/acel.13180] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 05/14/2020] [Accepted: 05/30/2020] [Indexed: 12/23/2022] Open
Abstract
Skeletal muscle dysfunction in survivors of pneumonia disproportionately affects older individuals in whom it causes substantial morbidity. We found that skeletal muscle recovery was impaired in old compared with young mice after influenza A virus-induced pneumonia. In young mice, recovery of muscle loss was associated with expansion of tissue-resident skeletal muscle macrophages and downregulation of MHC II expression, followed by a proliferation of muscle satellite cells. These findings were absent in old mice and in mice deficient in Cx3cr1. Transcriptomic profiling of tissue-resident skeletal muscle macrophages from old compared with young mice showed downregulation of pathways associated with phagocytosis and proteostasis, and persistent upregulation of inflammatory pathways. Consistently, skeletal muscle macrophages from old mice failed to downregulate MHCII expression during recovery from influenza A virus-induced pneumonia and showed impaired phagocytic function in vitro. Like old animals, mice deficient in the phagocytic receptor Mertk showed no macrophage expansion, MHCII downregulation, or satellite cell proliferation and failed to recover skeletal muscle function after influenza A pneumonia. Our data suggest that a loss of phagocytic function in a CX3CR1+ tissue-resident skeletal muscle macrophage population in old mice precludes satellite cell proliferation and recovery of skeletal muscle function after influenza A pneumonia.
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Affiliation(s)
- Constance E. Runyan
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Lynn C. Welch
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Masahiko Shigemura
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Luciano Amarelle
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Hiam Abdala‐Valencia
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Nikita Joshi
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Ziyan Lu
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Kiwon Nam
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Nikolay S. Markov
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | | | - Raul Piseaux‐Aillon
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Yuliya Politanska
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Lango Sichizya
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Satoshi Watanabe
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Kinola J.N. Williams
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - G. R. Scott Budinger
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Jacob I. Sznajder
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Alexander V. Misharin
- Division of Pulmonary and Critical Care MedicineFeinberg School of MedicineNorthwestern UniversityChicagoILUSA
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9
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Shigemura M, Lecuona E, Angulo M, Dada LA, Edwards MB, Welch LC, Casalino-Matsuda SM, Sporn PHS, Vadász I, Helenius IT, Nader GA, Gruenbaum Y, Sharabi K, Cummins E, Taylor C, Bharat A, Gottardi CJ, Beitel GJ, Kaminski N, Budinger GRS, Berdnikovs S, Sznajder JI. Elevated CO 2 regulates the Wnt signaling pathway in mammals, Drosophila melanogaster and Caenorhabditis elegans. Sci Rep 2019; 9:18251. [PMID: 31796806 PMCID: PMC6890671 DOI: 10.1038/s41598-019-54683-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 11/14/2019] [Indexed: 12/03/2022] Open
Abstract
Carbon dioxide (CO2) is sensed by cells and can trigger signals to modify gene expression in different tissues leading to changes in organismal functions. Despite accumulating evidence that several pathways in various organisms are responsive to CO2 elevation (hypercapnia), it has yet to be elucidated how hypercapnia activates genes and signaling pathways, or whether they interact, are integrated, or are conserved across species. Here, we performed a large-scale transcriptomic study to explore the interaction/integration/conservation of hypercapnia-induced genomic responses in mammals (mice and humans) as well as invertebrates (Caenorhabditis elegans and Drosophila melanogaster). We found that hypercapnia activated genes that regulate Wnt signaling in mouse lungs and skeletal muscles in vivo and in several cell lines of different tissue origin. Hypercapnia-responsive Wnt pathway homologues were similarly observed in secondary analysis of available transcriptomic datasets of hypercapnia in a human bronchial cell line, flies and nematodes. Our data suggest the evolutionarily conserved role of high CO2 in regulating Wnt pathway genes.
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Affiliation(s)
- Masahiko Shigemura
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Martín Angulo
- Pathophysiology Department, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Laura A Dada
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Melanie B Edwards
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Lynn C Welch
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - S Marina Casalino-Matsuda
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Peter H S Sporn
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
- Medical Service, Jesse Brown Veterans Affairs Medical Center, Chicago, IL, United States of America
| | - István Vadász
- Department of Internal Medicine, Justus Liebig University, Universities of Giessen and Marburg Lung Center, German Center for Lung Research, and The Cardio-Pulmonary Institute, Giessen, Germany
| | - Iiro Taneli Helenius
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
- Department of Molecular Biosciences, Northwestern University, Evanston, IL, United States of America
| | - Gustavo A Nader
- Department of Kinesiology and Huck Institutes of the Life Sciences, The Pennsylvania State University, State College, PA, United States of America
| | - Yosef Gruenbaum
- Department of Genetics, Institute of Life Sciences, Hebrew University of Jerusalem, Givat Ram, Jerusalem, Israel
| | - Kfir Sharabi
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, United States of America
- Department of Cell Biology, Harvard Medical School, Boston, MA, United States of America
| | - Eoin Cummins
- School of Medicine, Systems Biology Ireland and the Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Cormac Taylor
- School of Medicine, Systems Biology Ireland and the Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Ankit Bharat
- Division of Thoracic Surgery, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Cara J Gottardi
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Greg J Beitel
- Department of Molecular Biosciences, Northwestern University, Evanston, IL, United States of America
| | - Naftali Kaminski
- Department of Internal Medicine, Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT, United States of America
| | - G R Scott Budinger
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Sergejs Berdnikovs
- Division of Allergy and Immunology, Feinberg School of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States of America
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America.
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10
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Shigemura M, Lecuona E, Angulo M, Homma T, Rodríguez DA, Gonzalez-Gonzalez FJ, Welch LC, Amarelle L, Kim SJ, Kaminski N, Budinger GRS, Solway J, Sznajder JI. Hypercapnia increases airway smooth muscle contractility via caspase-7-mediated miR-133a-RhoA signaling. Sci Transl Med 2019; 10:10/457/eaat1662. [PMID: 30185650 DOI: 10.1126/scitranslmed.aat1662] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 06/07/2018] [Accepted: 08/16/2018] [Indexed: 12/12/2022]
Abstract
The elevation of carbon dioxide (CO2) in tissues and the bloodstream (hypercapnia) occurs in patients with severe lung diseases, including chronic obstructive pulmonary disease (COPD). Whereas hypercapnia has been recognized as a marker of COPD severity, a role for hypercapnia in disease pathogenesis remains unclear. We provide evidence that CO2 acts as a signaling molecule in mouse and human airway smooth muscle cells. High CO2 activated calcium-calpain signaling and consequent smooth muscle cell contraction in mouse airway smooth muscle cells. The signaling was mediated by caspase-7-induced down-regulation of the microRNA-133a (miR-133a) and consequent up-regulation of Ras homolog family member A and myosin light-chain phosphorylation. Exposure of wild-type, but not caspase-7-null, mice to hypercapnia increased airway contraction and resistance. Deletion of the Caspase-7 gene prevented hypercapnia-induced airway contractility, which was restored by lentiviral transfection of a miR-133a antagonist. In a cohort of patients with severe COPD, hypercapnic patients had higher airway resistance, which improved after correction of hypercapnia. Our data suggest a specific molecular mechanism by which the development of hypercapnia may drive COPD pathogenesis and progression.
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Affiliation(s)
- Masahiko Shigemura
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA.,First Department of Medicine, Hokkaido University School of Medicine, Sapporo, Japan
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Martín Angulo
- Pathophysiology Department, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Tetsuya Homma
- Division of Allergology and Respiratory Medicine, Department of Internal Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Diego A Rodríguez
- Pulmonology Department, Hospital del Mar, Institut Hospital del Mar d'Investigacions Me`diques, Universitat Pompeu Fabra, Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), ISCiii, Barcelona, Spain
| | | | - Lynn C Welch
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Luciano Amarelle
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA.,Pathophysiology Department, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Seok-Jo Kim
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA.,Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, IL 60612, USA
| | - Naftali Kaminski
- Department of Internal Medicine, Section of Pulmonary, Critical Care, and Sleep Medicine, Yale School of Medicine, New Haven, CT 06520, USA
| | - G R Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Julian Solway
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL 60611, USA.
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11
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Peteranderl C, Kuznetsova I, Schulze J, Hardt M, Lecuona E, Sznajder JI, Vadász I, Morty RE, Pleschka S, Wolff T, Herold S. Influenza A Virus Infection Induces Apical Redistribution of Na +, K +-ATPase in Lung Epithelial Cells In Vitro and In Vivo. Am J Respir Cell Mol Biol 2019; 61:395-398. [PMID: 31469298 PMCID: PMC6839927 DOI: 10.1165/rcmb.2019-0096le] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Christin Peteranderl
- Universities of Giessen and Marburg Lung CenterGiessen, Germany
- The Cardio-Pulmonary InstituteGiessen, Germany
| | - Irina Kuznetsova
- Universities of Giessen and Marburg Lung CenterGiessen, Germany
- Justus-Liebig-UniversityGiessen, Germany
| | | | | | - Emilia Lecuona
- Northwestern University Feinberg School of MedicineChicago, Illinoisand
| | - Jacob I. Sznajder
- Northwestern University Feinberg School of MedicineChicago, Illinoisand
| | - István Vadász
- Universities of Giessen and Marburg Lung CenterGiessen, Germany
- The Cardio-Pulmonary InstituteGiessen, Germany
| | - Rory E. Morty
- Universities of Giessen and Marburg Lung CenterGiessen, Germany
- The Cardio-Pulmonary InstituteGiessen, Germany
- Max Planck Institute for Heart and Lung ResearchBad Nauheim, Germany
| | | | | | - Susanne Herold
- Universities of Giessen and Marburg Lung CenterGiessen, Germany
- The Cardio-Pulmonary InstituteGiessen, Germany
- Northwestern University Feinberg School of MedicineChicago, Illinoisand
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12
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Akbarpour M, Wu Q, Liu X, Sun H, Lecuona E, Tomic R, Bhorade S, Mohanakumar T, Bharat A. Clinical relevance of lung-restricted antibodies in lung transplantation. Hum Immunol 2019; 80:595-601. [PMID: 31078336 DOI: 10.1016/j.humimm.2019.04.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/01/2019] [Accepted: 04/23/2019] [Indexed: 12/23/2022]
Abstract
Lung transplant is a definitive treatment for several end-stage lung diseases. However, the high incidence of allograft rejection limits the overall survival following lung transplantation. Traditionally, alloimmunity directed against human leukocyte antigens (HLA) has been implicated in transplant rejection. Recently, the clinical impact of non-HLA lung-restricted antibodies (LRA) has been recognized and extensive research has demonstrated that they may play a dominant role in the development of lung allograft rejection. The immunogenic lung-restricted antigens that have been identified include amongst others, collagen type I, collagen type V, and k-alpha 1 tubulin. Pre-existing antibodies against these lung-restricted antigens are prevalent in patients undergoing lung transplantation and have emerged as one of the predominant risk factors for primary graft dysfunction which limits short-term survival following lung transplantation. Additionally, LRA have been shown to predispose to chronic lung allograft rejection, the predominant cause of poor long-term survival. This review will discuss ongoing research into the mechanisms of development of LRA as well as the pathogenesis of associated lung allograft injury.
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Affiliation(s)
- Mahzad Akbarpour
- Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Qiang Wu
- Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Xianpeng Liu
- Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Haiying Sun
- Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Emilia Lecuona
- Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Rade Tomic
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Sangeeta Bhorade
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | | | - Ankit Bharat
- Division of Thoracic Surgery, Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
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13
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Amarelle L, Katzen J, Shigemura M, Welch LC, Cajigas H, Peteranderl C, Celli D, Herold S, Lecuona E, Sznajder JI. Cardiac glycosides decrease influenza virus replication by inhibiting cell protein translational machinery. Am J Physiol Lung Cell Mol Physiol 2019; 316:L1094-L1106. [PMID: 30892074 DOI: 10.1152/ajplung.00173.2018] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cardiac glycosides (CGs) are used primarily for cardiac failure and have been reported to have other effects, including inhibition of viral replication. Here we set out to study mechanisms by which CGs as inhibitors of the Na-K-ATPase decrease influenza A virus (IAV) replication in the lungs. We found that CGs inhibit influenza virus replication in alveolar epithelial cells by decreasing intracellular potassium, which in turn inhibits protein translation, independently of viral entry, mRNA transcription, and protein degradation. These effects were independent of the Src signaling pathway and intracellular calcium concentration changes. We found that short-term treatment with ouabain prevented IAV replication without cytotoxicity. Rodents express a Na-K-ATPase-α1 resistant to CGs. Thus we utilized Na-K-ATPase-α1-sensitive mice, infected them with high doses of influenza virus, and observed a modest survival benefit when treated with ouabain. In summary, we provide evidence that the inhibition of the Na-K-ATPase by CGs decreases influenza A viral replication by modulating the cell protein translational machinery and results in a modest survival benefit in mice.
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Affiliation(s)
- Luciano Amarelle
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,Departamento de Fisiopatología, Hospital de Clínicas, Facultad de Medicina, Universidad de la República , Montevideo , Uruguay
| | - Jeremy Katzen
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,Pulmonary, Allergy, and Critical Care Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania , Philadelphia, Pennsylvania
| | - Masahiko Shigemura
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Lynn C Welch
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Héctor Cajigas
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Christin Peteranderl
- Department of Internal Medicine II, University of Giessen and Marburg Lung Center , Giessen , Germany
| | - Diego Celli
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Susanne Herold
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,Department of Internal Medicine II, University of Giessen and Marburg Lung Center , Giessen , Germany
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
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14
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Radigan KA, Nicholson TT, Welch LC, Chi M, Amarelle L, Angulo M, Shigemura M, Shigemura A, Runyan CE, Morales-Nebreda L, Perlman H, Ceco E, Lecuona E, Dada LA, Misharin AV, Mutlu GM, Sznajder JI, Budinger GRS. Influenza A Virus Infection Induces Muscle Wasting via IL-6 Regulation of the E3 Ubiquitin Ligase Atrogin-1. J Immunol 2018; 202:484-493. [PMID: 30530483 DOI: 10.4049/jimmunol.1701433] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 11/05/2018] [Indexed: 12/26/2022]
Abstract
Muscle dysfunction is common in patients with adult respiratory distress syndrome and is associated with morbidity that can persist for years after discharge. In a mouse model of severe influenza A pneumonia, we found the proinflammatory cytokine IL-6 was necessary for the development of muscle dysfunction. Treatment with a Food and Drug Administration-approved Ab antagonist to the IL-6R (tocilizumab) attenuated the severity of influenza A-induced muscle dysfunction. In cultured myotubes, IL-6 promoted muscle degradation via JAK/STAT, FOXO3a, and atrogin-1 upregulation. Consistent with these findings, atrogin-1+/- and atrogin-1-/- mice had attenuated muscle dysfunction following influenza infection. Our data suggest that inflammatory endocrine signals originating from the injured lung activate signaling pathways in the muscle that induce dysfunction. Inhibiting these pathways may limit morbidity in patients with influenza A pneumonia and adult respiratory distress syndrome.
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Affiliation(s)
- Kathryn A Radigan
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Trevor T Nicholson
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Lynn C Welch
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Monica Chi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Luciano Amarelle
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611.,Departamento de Fisiopatología, Facultad de Medicina, Universidad de la República, Montevideo 11600, Uruguay; and
| | - Martín Angulo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611.,Departamento de Fisiopatología, Facultad de Medicina, Universidad de la República, Montevideo 11600, Uruguay; and
| | - Masahiko Shigemura
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Atsuko Shigemura
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Constance E Runyan
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Luisa Morales-Nebreda
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Harris Perlman
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Ermelinda Ceco
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Laura A Dada
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Alexander V Misharin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Gokhan M Mutlu
- Section of Pulmonary and Critical Care Medicine, University of Chicago, Chicago, IL 60637
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611;
| | - G R Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611;
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15
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Affiliation(s)
- Luciano Amarelle
- 1 Facultad de Medicina Universidad de la República Montevideo, Uruguay and
| | - Emilia Lecuona
- 2 Feinberg School of Medicine Northwestern University Chicago, Illinois
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16
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Amarelle L, Lecuona E. The Antiviral Effects of Na,K-ATPase Inhibition: A Minireview. Int J Mol Sci 2018; 19:ijms19082154. [PMID: 30042322 PMCID: PMC6121263 DOI: 10.3390/ijms19082154] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 07/19/2018] [Accepted: 07/20/2018] [Indexed: 12/11/2022] Open
Abstract
Since being first described more than 60 years ago, Na,K-ATPase has been extensively studied, while novel concepts about its structure, physiology, and biological roles continue to be elucidated. Cardiac glycosides not only inhibit the pump function of Na,K-ATPase but also activate intracellular signal transduction pathways, which are important in many biological processes. Recently, antiviral effects have been described as a novel feature of Na,K-ATPase inhibition with the use of cardiac glycosides. Cardiac glycosides have been reported to be effective against both DNA viruses such as cytomegalovirus and herpes simplex and RNA viruses such as influenza, chikungunya, coronavirus, and respiratory syncytial virus, among others. Consequently, cardiac glycosides have emerged as potential broad-spectrum antiviral drugs, with the great advantage of targeting cell host proteins, which help to minimize resistance to antiviral treatments, making them a very promising strategy against human viral infections. Here, we review the effect of cardiac glycosides on viral biology and the mechanisms by which these drugs impair the replication of this array of different viruses.
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Affiliation(s)
- Luciano Amarelle
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
- Departamento de Fisiopatología, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo 11600, Uruguay.
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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17
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Lecuona E, Sznajder JI. Stretching to Understand How Proteostasis and the Unfolded Protein Response Regulate Lung Injury. Am J Respir Cell Mol Biol 2018; 57:143-144. [PMID: 28762764 DOI: 10.1165/rcmb.2017-0170ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Emilia Lecuona
- 1 Pulmonary and Critical Care Medicine Northwestern University Chicago, Illinois
| | - Jacob I Sznajder
- 1 Pulmonary and Critical Care Medicine Northwestern University Chicago, Illinois
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18
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Peteranderl C, Sznajder JI, Herold S, Lecuona E. Inflammatory Responses Regulating Alveolar Ion Transport during Pulmonary Infections. Front Immunol 2017; 8:446. [PMID: 28458673 PMCID: PMC5394420 DOI: 10.3389/fimmu.2017.00446] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 03/31/2017] [Indexed: 01/13/2023] Open
Abstract
The respiratory epithelium is lined by a tightly balanced fluid layer that allows normal O2 and CO2 exchange and maintains surface tension and host defense. To maintain alveolar fluid homeostasis, both the integrity of the alveolar–capillary barrier and the expression of epithelial ion channels and pumps are necessary to establish a vectorial ion gradient. However, during pulmonary infection, auto- and/or paracrine-acting mediators induce pathophysiological changes of the alveolar–capillary barrier, altered expression of epithelial Na,K-ATPase and of epithelial ion channels including epithelial sodium channel and cystic fibrosis membrane conductance regulator, leading to the accumulation of edema and impaired alveolar fluid clearance. These mediators include classical pro-inflammatory cytokines such as TGF-β, TNF-α, interferons, or IL-1β that are released upon bacterial challenge with Streptococcus pneumoniae, Klebsiella pneumoniae, or Mycoplasma pneumoniae as well as in viral infection with influenza A virus, pathogenic coronaviruses, or respiratory syncytial virus. Moreover, the pro-apoptotic mediator TNF-related apoptosis-inducing ligand, extracellular nucleotides, or reactive oxygen species impair epithelial ion channel expression and function. Interestingly, during bacterial infection, alterations of ion transport function may serve as an additional feedback loop on the respiratory inflammatory profile, further aggravating disease progression. These changes lead to edema formation and impair edema clearance which results in suboptimal gas exchange causing hypoxemia and hypercapnia. Recent preclinical studies suggest that modulation of the alveolar–capillary fluid homeostasis could represent novel therapeutic approaches to improve outcomes in infection-induced lung injury.
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Affiliation(s)
- Christin Peteranderl
- Department of Internal Medicine II, University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Susanne Herold
- Department of Internal Medicine II, University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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19
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Abstract
Gases are sensed by lung cells and can activate specific intracellular signalling pathways, and thus have physiological and pathophysiological effects. Carbon dioxide (CO2 ), a primary product of oxidative metabolism, can be sensed by eukaryotic cells eliciting specific responses via recently identified signalling pathways. However, the physiological and pathophysiological effects of high CO2 (hypercapnia) on the lungs and specific lung cells, which are the primary site of CO2 elimination, are incompletely understood. In this review, we provide a physiological and mechanistic perspective on the effects of hypercapnia on the lungs and discuss the recent understanding of CO2 modulation of the alveolar epithelial function (lung oedema clearance), epithelial cell repair, innate immunity and airway function.
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Affiliation(s)
- Masahiko Shigemura
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL, USA
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL, USA
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, IL, USA
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20
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21
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Amarelle L, Lecuona E, Sznajder JI. Anti-Influenza Treatment: Drugs Currently Used and Under Development. Arch Bronconeumol 2016; 53:19-26. [PMID: 27519544 PMCID: PMC6889083 DOI: 10.1016/j.arbres.2016.07.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 06/24/2016] [Accepted: 07/10/2016] [Indexed: 02/06/2023]
Abstract
La gripe es una enfermedad contagiosa altamente prevalente y con significativa morbimortalidad. El tratamiento disponible con fármacos antivirales, de ser administrado de forma precoz, puede reducir el riesgo de complicaciones severas; sin embargo, muchos tipos de virus desarrollan resistencia a estos fármacos, reduciendo notablemente su efectividad. Ha habido un gran interés en el desarrollo de nuevas opciones terapéuticas para combatir la enfermedad. Una gran variedad de fármacos han demostrado tener actividad antiinfluenza, pero aún no están disponibles para su uso en la clínica. Muchos de ellos tienen como objetivo componentes del virus, mientras que otros son dirigidos a elementos de la célula huésped que participan en el ciclo viral. Modular los componentes del huésped es una estrategia que minimiza el desarrollo de cepas resistentes, dado que estos no están sujetos a la variabilidad genética que tiene el virus. Por otro lado, la principal desventaja es que existe un mayor riesgo de efectos secundarios asociados al tratamiento. El objetivo de la presente revisión es describir los principales agentes farmacológicos disponibles en la actualidad, así como los nuevos fármacos en estudio con potencial beneficio en el tratamiento de la gripe.
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Affiliation(s)
- Luciano Amarelle
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, Estados Unidos de América; Departamento de Fisiopatología, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, Estados Unidos de América
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, Estados Unidos de América.
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22
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Selfridge AC, Cavadas MAS, Scholz CC, Campbell EL, Welch LC, Lecuona E, Colgan SP, Barrett KE, Sporn PHS, Sznajder JI, Cummins EP, Taylor CT. Hypercapnia Suppresses the HIF-dependent Adaptive Response to Hypoxia. J Biol Chem 2016; 291:11800-8. [PMID: 27044749 DOI: 10.1074/jbc.m116.713941] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Indexed: 01/18/2023] Open
Abstract
Molecular oxygen and carbon dioxide are the primary gaseous substrate and product of oxidative metabolism, respectively. Hypoxia (low oxygen) and hypercapnia (high carbon dioxide) are co-incidental features of the tissue microenvironment in a range of pathophysiologic states, including acute and chronic respiratory diseases. The hypoxia-inducible factor (HIF) is the master regulator of the transcriptional response to hypoxia; however, little is known about the impact of hypercapnia on gene transcription. Because of the relationship between hypoxia and hypercapnia, we investigated the effect of hypercapnia on the HIF pathway. Hypercapnia suppressed HIF-α protein stability and HIF target gene expression both in mice and cultured cells in a manner that was at least in part independent of the canonical O2-dependent HIF degradation pathway. The suppressive effects of hypercapnia on HIF-α protein stability could be mimicked by reducing intracellular pH at a constant level of partial pressure of CO2 Bafilomycin A1, a specific inhibitor of vacuolar-type H(+)-ATPase that blocks lysosomal degradation, prevented the hypercapnic suppression of HIF-α protein. Based on these results, we hypothesize that hypercapnia counter-regulates activation of the HIF pathway by reducing intracellular pH and promoting lysosomal degradation of HIF-α subunits. Therefore, hypercapnia may play a key role in the pathophysiology of diseases where HIF is implicated.
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Affiliation(s)
| | - Miguel A S Cavadas
- Conway Institute, and Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland
| | - Carsten C Scholz
- From the School of Medicine and Medical Science, Conway Institute, and Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland, the Institute of Physiology, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Eric L Campbell
- the University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045
| | - Lynn C Welch
- the Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, and
| | - Emilia Lecuona
- the Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, and
| | - Sean P Colgan
- the University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado 80045
| | - Kim E Barrett
- From the School of Medicine and Medical Science, Conway Institute, and
| | - Peter H S Sporn
- the Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, and the Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois 60612
| | - Jacob I Sznajder
- the Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, and
| | - Eoin P Cummins
- From the School of Medicine and Medical Science, Conway Institute, and
| | - Cormac T Taylor
- From the School of Medicine and Medical Science, Conway Institute, and Systems Biology Ireland, University College Dublin, Belfield, Dublin 4, Ireland,
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Jaitovich A, Angulo M, Lecuona E, Dada LA, Welch LC, Cheng Y, Gusarova G, Ceco E, Liu C, Shigemura M, Barreiro E, Patterson C, Nader GA, Sznajder JI. High CO2 levels cause skeletal muscle atrophy via AMP-activated kinase (AMPK), FoxO3a protein, and muscle-specific Ring finger protein 1 (MuRF1). J Biol Chem 2015; 290:9183-94. [PMID: 25691571 DOI: 10.1074/jbc.m114.625715] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Indexed: 12/20/2022] Open
Abstract
Patients with chronic obstructive pulmonary disease, acute lung injury, and critical care illness may develop hypercapnia. Many of these patients often have muscle dysfunction which increases morbidity and impairs their quality of life. Here, we investigated whether hypercapnia leads to skeletal muscle atrophy. Mice exposed to high CO2 had decreased skeletal muscle wet weight, fiber diameter, and strength. Cultured myotubes exposed to high CO2 had reduced fiber diameter, protein/DNA ratios, and anabolic capacity. High CO2 induced the expression of MuRF1 in vivo and in vitro, whereas MuRF1(-/-) mice exposed to high CO2 did not develop muscle atrophy. AMP-activated kinase (AMPK), a metabolic sensor, was activated in myotubes exposed to high CO2, and loss-of-function studies showed that the AMPKα2 isoform is necessary for muscle-specific ring finger protein 1 (MuRF1) up-regulation and myofiber size reduction. High CO2 induced AMPKα2 activation, triggering the phosphorylation and nuclear translocation of FoxO3a, and leading to an increase in MuRF1 expression and myotube atrophy. Accordingly, we provide evidence that high CO2 activates skeletal muscle atrophy via AMPKα2-FoxO3a-MuRF1, which is of biological and potentially clinical significance in patients with lung diseases and hypercapnia.
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Affiliation(s)
- Ariel Jaitovich
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611
| | - Martín Angulo
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611, Departamento de Fisiopatología, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Emilia Lecuona
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611
| | - Laura A Dada
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611
| | - Lynn C Welch
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611
| | - Yuan Cheng
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611
| | - Galina Gusarova
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611
| | - Ermelinda Ceco
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611
| | - Chang Liu
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - Masahiko Shigemura
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611
| | - Esther Barreiro
- Pulmonology Department-Muscle and Respiratory System Research Unit, Molecular Mechanisms of Lung Cancer Predisposition Research Group (IMIM)-Hospital del Mar-IMIM, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, The Barcelona Biomedical Research Park, Barcelona, Spain, and Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III (ISCIII), Madrid, Spain, and
| | - Cam Patterson
- McAllister Heart Institute, University of North Carolina, Chapel Hill, North Carolina
| | - Gustavo A Nader
- Department of Physiology and Pharmacology, Karolinska Institute, Stockholm, Sweden
| | - Jacob I Sznajder
- From the Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois 60611,
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Keller MJ, Lecuona E, Prakriya M, Cheng Y, Soberanes S, Budinger GRS, Sznajder JI. Calcium release-activated calcium (CRAC) channels mediate the β(2)-adrenergic regulation of Na,K-ATPase. FEBS Lett 2014; 588:4686-93. [PMID: 25447523 DOI: 10.1016/j.febslet.2014.10.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 10/23/2014] [Accepted: 10/29/2014] [Indexed: 01/11/2023]
Abstract
β2-Adrenergic agonists have been shown to regulate Na,K-ATPase in the alveolar epithelium by recruiting Na,K-ATPase-containing vesicles to the plasma membrane of alveolar epithelial cells (AEC). Here, we provide evidence that β2-agonists induce store-operated calcium entry (SOCE) in AECs. This calcium entry is necessary for β2-agonist-induced recruitment of Na,K-ATPase to the plasma membrane of AECs. Specifically, we show that β2-agonists induce SOCE via stromal interaction molecule 1 (STIM1)-associated calcium release-activated calcium (CRAC) channels. We also demonstrate that the magnitude of SOCE affects the abundance of Na,K-ATPase at the plasma membrane of AECs.
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Affiliation(s)
- Michael J Keller
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA.
| | - Murali Prakriya
- Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Yuan Cheng
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Saul Soberanes
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
| | - G R Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Jacob I Sznajder
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
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25
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Lecuona E, Sun H, Chen J, Trejo HE, Baker MA, Sznajder JI. Protein kinase A-Iα regulates Na,K-ATPase endocytosis in alveolar epithelial cells exposed to high CO(2) concentrations. Am J Respir Cell Mol Biol 2013; 48:626-34. [PMID: 23349050 DOI: 10.1165/rcmb.2012-0373oc] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Elevated concentrations of CO2 (hypercapnia) lead to alveolar epithelial dysfunction by promoting Na,K-ATPase endocytosis. In the present report, we investigated whether the CO2/HCO3(-) activated soluble adenylyl cyclase (sAC) regulates this process. We found that hypercapnia increased the production of cyclic adenosine monophosphate (cAMP) and stimulated protein kinase A (PKA) activity via sAC, which was necessary for Na,K-ATPase endocytosis. During hypercapnia, cAMP was mainly produced in specific microdomains in the proximity of the plasma membrane, leading to PKA Type Iα activation. In alveolar epithelial cells exposed to high CO2 concentrations, PKA Type Iα regulated the time-dependent phosphorylation of the actin cytoskeleton component α-adducin at serine 726. Cells expressing small hairpin RNA for PKAc, dominant-negative PKA Type Iα, small interfering RNA for α-adducin, and α-adducin with serine 726 mutated to alanine prevented Na,K-ATPase endocytosis. In conclusion, we provide evidence for a new mechanism by which hypercapnia via sAC, cAMP, PKA Type Iα, and α-adducin regulates Na,K-ATPase endocytosis in alveolar epithelial cells.
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Affiliation(s)
- Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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26
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Lecuona E, Sassoon CS, Barreiro E. Lipid overload: trigger or consequence of mitochondrial oxidative stress in ventilator-induced diaphragmatic dysfunction? Am J Respir Crit Care Med 2013. [PMID: 23204373 DOI: 10.1164/rccm.201209-1735ed] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abstract
MicroRNAs (miRNAs) are small non-coding RNA molecules that negatively regulate gene expression. They actively participate in the modulation of important cell physiological processes and are involved in the pathogenesis of lung diseases such as lung cancer, pulmonary fibrosis, asthma and chronic obstructive pulmonary disease. A better understanding of the role that miRNAs play in these diseases could lead to the development of new diagnostic and therapeutic tools. In this review, we discuss the role of some miRNAs in different lung diseases as well as the possible future of these discoveries in clinical applications.
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Affiliation(s)
- Martín Angulo
- Division of Pulmonary and Critical Care, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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28
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Vohwinkel CU, Lecuona E, Sun H, Sommer N, Vadász I, Chandel NS, Sznajder JI. Elevated CO(2) levels cause mitochondrial dysfunction and impair cell proliferation. J Biol Chem 2011; 286:37067-76. [PMID: 21903582 PMCID: PMC3199454 DOI: 10.1074/jbc.m111.290056] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Revised: 09/03/2011] [Indexed: 01/11/2023] Open
Abstract
Elevated CO(2) concentrations (hypercapnia) occur in patients with severe lung diseases. Here, we provide evidence that high CO(2) levels decrease O(2) consumption and ATP production and impair cell proliferation independently of acidosis and hypoxia in fibroblasts (N12) and alveolar epithelial cells (A549). Cells exposed to elevated CO(2) died in galactose medium as well as when glucose-6-phosphate isomerase was knocked down, suggesting mitochondrial dysfunction. High CO(2) levels led to increased levels of microRNA-183 (miR-183), which in turn decreased expression of IDH2 (isocitrate dehydrogenase 2). The high CO(2)-induced decrease in cell proliferation was rescued by α-ketoglutarate and overexpression of IDH2, whereas proliferation decreased in normocapnic cells transfected with siRNA for IDH2. Also, overexpression of miR-183 decreased IDH2 (mRNA and protein) as well as cell proliferation under normocapnic conditions, whereas inhibition of miR-183 rescued the normal proliferation phenotype in cells exposed to elevated levels of CO(2). Accordingly, we provide evidence that high CO(2) induces miR-183, which down-regulates IDH2, thus impairing mitochondrial function and cell proliferation. These results are of relevance to patients with hypercapnia such as those with chronic obstructive pulmonary disease, asthma, cystic fibrosis, bronchopulmonary dysplasia, and muscular dystrophies.
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Affiliation(s)
- Christine U. Vohwinkel
- From the Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
- the Division of Pediatric Critical Care Medicine, Children's Memorial Hospital, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60614, and
| | - Emilia Lecuona
- From the Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
| | - Haying Sun
- From the Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
| | - Natascha Sommer
- the Department of Internal Medicine, University of Giessen Lung Center, Justus Liebig University, 35390 Giessen, Germany
| | - István Vadász
- the Department of Internal Medicine, University of Giessen Lung Center, Justus Liebig University, 35390 Giessen, Germany
| | - Navdeep S. Chandel
- From the Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
| | - Jacob I. Sznajder
- From the Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611
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29
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Welch LC, Lecuona E, Briva A, Trejo HE, Dada LA, Sznajder JI. Extracellular signal-regulated kinase (ERK) participates in the hypercapnia-induced Na,K-ATPase downregulation. FEBS Lett 2010; 584:3985-9. [PMID: 20691686 DOI: 10.1016/j.febslet.2010.08.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 07/21/2010] [Accepted: 08/02/2010] [Indexed: 12/26/2022]
Abstract
Hypercapnia has been shown to impair alveolar fluid reabsorption (AFR) by decreasing Na,K-ATPase activity. Extracellular signal-regulated kinase pathway (ERK) is activated under conditions of cellular stress and has been known to regulate the Na,K-ATPase. Here, we show that hypercapnia leads to ERK activation in a time-dependent manner in alveolar epithelial cells (AEC). Inhibition of ERK by U0126 or siRNA prevented both the hypercapnia-induced Na,K-ATPase endocytosis and impairment of AFR. Moreover, ERK inhibition prevented AMPK activation, a known modulator of hypercapnia-induced Na,K-ATPase endocytosis. Accordingly, these data suggest that hypercapnia-induced Na,K-ATPase endocytosis is dependent on ERK activation in AEC and that ERK plays an important role in hypercapnia-induced impairment of AFR in rat lungs.
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Affiliation(s)
- Lynn C Welch
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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30
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Briva A, Lecuona E, Sznajder JI. [Permissive and non-permissive hypercapnia: mechanisms of action and consequences of high carbon dioxide levels]. Arch Bronconeumol 2010; 46:378-82. [PMID: 20303638 PMCID: PMC3858013 DOI: 10.1016/j.arbres.2010.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Accepted: 01/11/2010] [Indexed: 01/11/2023]
Abstract
Acute lung injury is a disease with high incidence of mortality and its treatment is still controversial. Increasing the levels of CO2 beyond the physiological range has been proposed as a potential protective strategy for patients on mechanical ventilation, as it could moderate the inflammatory response. In this article we review the published evidence on the role of CO2 during acute lung injury. We conclude that although there are reports suggesting benefits from hypercapnia, more recent evidence suggests that hypercapnia could be deleterious, contributing to worsening of the lung injury.
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Affiliation(s)
- Arturo Briva
- Medicina Intensiva, Departamento de Fisiopatología, Hospital de Clínicas, Montevideo, Uruguay.
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31
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Sharabi K, Lecuona E, Helenius IT, Beitel GJ, Sznajder JI, Gruenbaum Y. Sensing, physiological effects and molecular response to elevated CO2 levels in eukaryotes. J Cell Mol Med 2009; 13:4304-18. [PMID: 19863692 PMCID: PMC4515048 DOI: 10.1111/j.1582-4934.2009.00952.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Carbon dioxide (CO2) is an important gaseous molecule that maintains biosphere homeostasis and is an important cellular signalling molecule in all organisms. The transport of CO2 through membranes has fundamental roles in most basic aspects of life in both plants and animals. There is a growing interest in understanding how CO2 is transported into cells, how it is sensed by neurons and other cell types and in understanding the physiological and molecular consequences of elevated CO2 levels (hypercapnia) at the cell and organism levels. Human pulmonary diseases and model organisms such as fungi, C. elegans, Drosophila and mice have been proven to be important in understanding of the mechanisms of CO2 sensing and response.
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Affiliation(s)
- Kfir Sharabi
- Department of Genetics, Institute of Life Sciences, Hebrew University of Jerusalem, Jerusalem, Israel
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32
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Lecuona E, Minin A, Trejo HE, Chen J, Comellas AP, Sun H, Grillo D, Nekrasova OE, Welch LC, Szleifer I, Gelfand VI, Sznajder JI. Myosin-Va restrains the trafficking of Na+/K+-ATPase-containing vesicles in alveolar epithelial cells. J Cell Sci 2009; 122:3915-22. [PMID: 19808891 DOI: 10.1242/jcs.046953] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Stimulation of Na(+)/K(+)-ATPase activity in alveolar epithelial cells by cAMP involves its recruitment from intracellular compartments to the plasma membrane. Here, we studied the role of the actin molecular motor myosin-V in this process. We provide evidence that, in alveolar epithelial cells, cAMP promotes Na(+)/K(+)-ATPase recruitment to the plasma membrane by increasing the average speed of Na(+)/K(+)-ATPase-containing vesicles moving to the cell periphery. We found that three isoforms of myosin-V are expressed in alveolar epithelial cells; however, only myosin-Va and Vc colocalized with the Na(+)/K(+)-ATPase in intracellular membrane fractions. Overexpression of dominant-negative myosin-Va or knockdown with specific shRNA increased the average speed and distance traveled by the Na(+)/K(+)-ATPase-containing vesicles, as well as the Na(+)/K(+)-ATPase activity and protein abundance at the plasma membrane to similar levels as those observed with cAMP stimulation. These data show that myosin-Va has a role in restraining Na(+)/K(+)-ATPase-containing vesicles within intracellular pools and that this restrain is released after stimulation by cAMP allowing the recruitment of the Na(+)/K(+)-ATPase to the plasma membrane and thus increased activity.
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Affiliation(s)
- Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University, Chicago, IL 60611, USA.
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33
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Trejo HE, Lecuona E, Grillo D, Szleifer I, Nekrasova OE, Gelfand VI, Sznajder JI. Role of kinesin light chain-2 of kinesin-1 in the traffic of Na,K-ATPase-containing vesicles in alveolar epithelial cells. FASEB J 2009; 24:374-82. [PMID: 19773350 DOI: 10.1096/fj.09-137802] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Recruitment of the Na,K-ATPase to the plasma membrane of alveolar epithelial cells results in increased active Na(+) transport and fluid clearance in a process that requires an intact microtubule network. However, the microtubule motors involved in this process have not been identified. In the present report, we studied the role of kinesin-1, a plus-end microtubule molecular motor that has been implicated in the movement of organelles in the Na,K-ATPase traffic. We determined by confocal microscopy and biochemical assays that kinesin-1 and the Na,K-ATPase are present in the same membranous cellular compartment. Knockdown of kinesin-1 heavy chain (KHC) or the light chain-2 (KLC2), but not of the light chain-1 (KLC1), decreased the movement of Na,K-ATPase-containing vesicles when compared to sham siRNA-transfected cells (control group). Thus, a specific isoform of kinesin-1 is required for microtubule-dependent recruitment of Na,K-ATPase to the plasma membrane, which is of physiological significance.
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Affiliation(s)
- Humberto E Trejo
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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34
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Lecuona E, Sun H, Vohwinkel C, Ciechanover A, Sznajder JI. Ubiquitination participates in the lysosomal degradation of Na,K-ATPase in steady-state conditions. Am J Respir Cell Mol Biol 2009; 41:671-9. [PMID: 19286978 DOI: 10.1165/rcmb.2008-0365oc] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The alveolar epithelial cell (AEC) Na,K-ATPase contributes to vectorial Na(+) transport and plays an important role in keeping the lungs free of edema. We determined, by cell surface labeling with biotin and immunofluorescence, that approximately 30% of total Na,K-ATPase is at the plasma membrane of AEC in steady-state conditions. The half-life of the plasma membrane Na,K-ATPase was about 4 hours, and the incorporation of new Na,K-ATPase to the plasma membrane was Brefeldin A sensitive. Both protein kinase C (PKC) inhibition with bisindolylmaleimide (10 microM) and infection with an adenovirus expressing dominant-negative PKCzeta prevented Na,K-ATPase degradation. In cells expressing the Na,K-ATPase alpha1-subunit lacking the PKC phosphorylation sites, the plasma membrane Na,K-ATPase had a moderate increase in half-life. We also found that the Na,K-ATPase was ubiquitinated in steady-state conditions and that proteasomal inhibitors prevented its degradation. Interestingly, mutation of the four lysines described to be necessary for ubiquitination and endocytosis of the Na,K-ATPase in injurious conditions did not have an effect on its half-life in steady-state conditions. Lysosomal inhibitors prevented Na,K-ATPase degradation, and co-localization of Na,K-ATPase and lysosomes was found after labeling and chasing the plasma membrane Na,K-ATPase for 4 hours. Accordingly, we provide evidence suggesting that phosphorylation and ubiquitination are necessary for the steady-state degradation of the plasma membrane Na,K-ATPase in the lysosomes in alveolar epithelial cells.
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Affiliation(s)
- Emilia Lecuona
- Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, 240 E. Huron, McGaw M300, Chicago, IL 60611, USA.
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35
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Comellas AP, Briva A, Dada LA, Butti ML, Trejo HE, Yshii C, Azzam ZS, Litvan J, Chen J, Lecuona E, Pesce LM, Yanagisawa M, Sznajder JI. Endothelin-1 impairs alveolar epithelial function via endothelial ETB receptor. Am J Respir Crit Care Med 2008; 179:113-22. [PMID: 18948426 DOI: 10.1164/rccm.200804-540oc] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
RATIONALE Endothelin-1 (ET-1) is increased in patients with high-altitude pulmonary edema and acute respiratory distress syndrome, and these patients have decreased alveolar fluid reabsorption (AFR). OBJECTIVES To determine whether ET-1 impairs AFR via activation of endothelial cells and nitric oxide (NO) generation. METHODS Isolated perfused rat lung, transgenic rats deficient in ETB receptors, coincubation of lung human microvascular endothelial cells (HMVEC-L) with rat alveolar epithelial type II cells or A549 cells, ouabain-sensitive 86Rb+ uptake. MEASUREMENTS AND MAIN RESULTS The ET-1-induced decrease in AFR was prevented by blocking the endothelin receptor ETB, but not ETA. Endothelial-epithelial cell interaction is required, as direct exposure of alveolar epithelial cells (AECs) to ET-1 did not affect Na,K-ATPase function or protein abundance at the plasma membrane, whereas coincubation of HMVEC-L and AECs with ET-1 decreased Na,K-ATPase activity and protein abundance at the plasma membrane. Exposing transgenic rats deficient in ETB receptors in the pulmonary vasculature (ET-B(-/-)) to ET-1 did not decrease AFR or Na,K-ATPase protein abundance at the plasma membrane of AECs. Exposing HMVEC-L to ET-1 led to increased NO, and the ET-1-induced down-regulation of Na,K-ATPase was prevented by the NO synthase inhibitor l-NAME, but not by a guanylate cyclase inhibitor. CONCLUSIONS We provide the first evidence that ET-1, via an endothelial-epithelial interaction, leads to decreased AFR by a mechanism involving activation of endothelial ETB receptors and NO generation leading to alveolar epithelial Na,K-ATPase down-regulation in a cGMP-independent manner.
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Affiliation(s)
- Alejandro P Comellas
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.
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36
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Affiliation(s)
- Jiwang Chen
- Northwestern University Feinberg School of Medicine
Chicago, Illinois
| | - Arturo Briva
- Northwestern University Feinberg School of Medicine
Chicago, Illinois
| | - Emilia Lecuona
- Northwestern University Feinberg School of Medicine
Chicago, Illinois
| | - Jacob I. Sznajder
- Northwestern University Feinberg School of Medicine
Chicago, Illinois
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37
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Abstract
A hallmark of acute lung injury is the accumulation of a protein rich edema which impairs gas exchange and leads to hypoxemia. The resolution of lung edema is effected by active sodium transport, mostly contributed by apical Na(+) channels and the basolateral located Na,K-ATPase. It has been reported that the decrease of Na,K-ATPase function seen during lung injury is due to its endocytosis from the cell plasma membrane into intracellular pools. In alveolar epithelial cells exposed to severe hypoxia, we have reported that increased production of mitochondrial reactive oxygen species leads to Na,K-ATPase endocytosis and degradation. We found that this regulated process follows what is referred as the Phosphorylation-Ubiquitination-Recognition-Endocytosis-Degradation (PURED) pathway. Cells exposed to hypoxia generate reactive oxygen species which activate PKC zeta which in turn phosphorylates the Na,K-ATPase at the Ser18 residue in the N-terminus of the alpha1-subunit leading the ubiquitination of any of the four lysines (K16, K17, K19, K20) adjacent to the Ser18 residue. This process promotes the alpha1-subunit recognition by the mu2 subunit of the adaptor protein-2 and its endocytosis trough a clathrin dependent mechanism. Finally, the ubiquitinated Na,K-ATPase undergoes degradation via a lysosome/proteasome dependent mechanism.
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Affiliation(s)
- Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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38
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Vadász I, Dada LA, Briva A, Trejo HE, Welch LC, Chen J, Tóth PT, Lecuona E, Witters LA, Schumacker PT, Chandel NS, Seeger W, Sznajder JI. AMP-activated protein kinase regulates CO2-induced alveolar epithelial dysfunction in rats and human cells by promoting Na,K-ATPase endocytosis. J Clin Invest 2008; 118:752-62. [PMID: 18188452 DOI: 10.1172/jci29723] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2006] [Accepted: 11/16/2007] [Indexed: 12/12/2022] Open
Abstract
Hypercapnia (elevated CO(2) levels) occurs as a consequence of poor alveolar ventilation and impairs alveolar fluid reabsorption (AFR) by promoting Na,K-ATPase endocytosis. We studied the mechanisms regulating CO(2)-induced Na,K-ATPase endocytosis in alveolar epithelial cells (AECs) and alveolar epithelial dysfunction in rats. Elevated CO(2) levels caused a rapid activation of AMP-activated protein kinase (AMPK) in AECs, a key regulator of metabolic homeostasis. Activation of AMPK was mediated by a CO(2)-triggered increase in intracellular Ca(2+) concentration and Ca(2+)/calmodulin-dependent kinase kinase-beta (CaMKK-beta). Chelating intracellular Ca(2+) or abrogating CaMKK-beta function by gene silencing or chemical inhibition prevented the CO(2)-induced AMPK activation in AECs. Activation of AMPK or overexpression of constitutively active AMPK was sufficient to activate PKC-zeta and promote Na,K-ATPase endocytosis. Inhibition or downregulation of AMPK via adenoviral delivery of dominant-negative AMPK-alpha(1) prevented CO(2)-induced Na,K-ATPase endocytosis. The hypercapnia effects were independent of intracellular ROS. Exposure of rats to hypercapnia for up to 7 days caused a sustained decrease in AFR. Pretreatment with a beta-adrenergic agonist, isoproterenol, or a cAMP analog ameliorated the hypercapnia-induced impairment of AFR. Accordingly, we provide evidence that elevated CO(2) levels are sensed by AECs and that AMPK mediates CO(2)-induced Na,K-ATPase endocytosis and alveolar epithelial dysfunction, which can be prevented with beta-adrenergic agonists and cAMP.
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Affiliation(s)
- István Vadász
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
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Zhou G, Dada LA, Chandel NS, Iwai K, Lecuona E, Ciechanover A, Sznajder JI. Hypoxia-mediated Na-K-ATPase degradation requires von Hippel Lindau protein. FASEB J 2007; 22:1335-42. [PMID: 18073334 DOI: 10.1096/fj.07-8369com] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Hypoxia inhibits Na-K-ATPase activity and leads to its degradation in mammalian cells. Von Hippel Lindau protein (pVHL) and hypoxia inducible factor (HIF) are key mediators in cellular adaptation to hypoxia; thus, we set out to investigate whether pVHL and HIF participate in the hypoxia-mediated degradation of plasma membrane Na-K-ATPase. We found that in the presence of pVHL hypoxia decreased Na-K-ATPase activity and promoted the degradation of plasma membrane Na-K-ATPase. In pVHL-deficient cells, hypoxia did not decrease the Na-K-ATPase activity and the degradation of plasma membrane Na-K-ATPase was prevented. pVHL-mediated degradation of Na-K-ATPase required the functional pVHL E3 ligase and Ubc5 since pVHL mutants and dominant-negative Ubc5 prevented Na-K-ATPase from degradation. The generation of reactive oxygen species was necessary for pVHL-mediated Na-K-ATPase degradation during hypoxia. Desferrioxamine, which stabilizes HIF1/2alpha, did not affect the half-life of plasma membrane Na-K-ATPase. In addition, stabilizing HIF1/2alpha by infecting mammalian cells with adenoviruses containing the oxygen-dependent degradation domain of HIF1alpha did not affect the plasma membrane Na-K-ATPase degradation. In cells with suppression of pVHL by short hairpin RNA, the Na-K-ATPase was not degraded during hypoxia, whereas cells with knockdown of HIF1/2alpha retained the ability to degrade plasma membrane Na-K-ATPase. These findings suggest that pVHL participates in the hypoxia-mediated degradation of plasma membrane Na-K-ATPase in a HIF-independent manner.
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Affiliation(s)
- Guofei Zhou
- Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, 240 E. Huron, Chicago, IL 60611, USA
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Briva A, Vadász I, Lecuona E, Welch LC, Chen J, Dada LA, Trejo HE, Dumasius V, Azzam ZS, Myrianthefs PM, Batlle D, Gruenbaum Y, Sznajder JI. High CO2 levels impair alveolar epithelial function independently of pH. PLoS One 2007; 2:e1238. [PMID: 18043745 PMCID: PMC2077933 DOI: 10.1371/journal.pone.0001238] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2007] [Accepted: 11/06/2007] [Indexed: 01/11/2023] Open
Abstract
Background In patients with acute respiratory failure, gas exchange is impaired due to the accumulation of fluid in the lung airspaces. This life-threatening syndrome is treated with mechanical ventilation, which is adjusted to maintain gas exchange, but can be associated with the accumulation of carbon dioxide in the lung. Carbon dioxide (CO2) is a by-product of cellular energy utilization and its elimination is affected via alveolar epithelial cells. Signaling pathways sensitive to changes in CO2 levels were described in plants and neuronal mammalian cells. However, it has not been fully elucidated whether non-neuronal cells sense and respond to CO2. The Na,K-ATPase consumes ∼40% of the cellular metabolism to maintain cell homeostasis. Our study examines the effects of increased pCO2 on the epithelial Na,K-ATPase a major contributor to alveolar fluid reabsorption which is a marker of alveolar epithelial function. Principal Findings We found that short-term increases in pCO2 impaired alveolar fluid reabsorption in rats. Also, we provide evidence that non-excitable, alveolar epithelial cells sense and respond to high levels of CO2, independently of extracellular and intracellular pH, by inhibiting Na,K-ATPase function, via activation of PKCζ which phosphorylates the Na,K-ATPase, causing it to endocytose from the plasma membrane into intracellular pools. Conclusions Our data suggest that alveolar epithelial cells, through which CO2 is eliminated in mammals, are highly sensitive to hypercapnia. Elevated CO2 levels impair alveolar epithelial function, independently of pH, which is relevant in patients with lung diseases and altered alveolar gas exchange.
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Affiliation(s)
- Arturo Briva
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- Departamento de Fisiopatología, Facultad de Medicina, Universidad de la Republica, Montevideo, Uruguay
| | - István Vadász
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- University of Giessen Lung Center, Justus Liebig University, Giessen, Germany
| | - Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Lynn C. Welch
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Jiwang Chen
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Laura A. Dada
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Humberto E. Trejo
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Vidas Dumasius
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Zaher S. Azzam
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- Ruth & Bruce Rappaport Faculty of Medicine and Research Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Pavlos M. Myrianthefs
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- Intensive Care Unit, Athens University, “KAT” General Hospital, Athens, Greece
| | - Daniel Batlle
- Division of Nephrology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Yosef Gruenbaum
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- Department of Genetics, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Jacob I. Sznajder
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- * To whom correspondence should be addressed. E-mail:
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Abstract
Carbonic anhydrase II (CAII) plays an important role in carbon dioxide metabolism and intracellular pH regulation. In this study, we provide evidence that CAII is expressed in both type I (AECI) and type II (AECII) alveolar epithelial cells by RT-PCR and Western blotting in freshly isolated rat cells. These results were further confirmed by double immunostaining with CAII antibodies and AECI- or AECII-specific markers in freshly isolated alveolar epithelial cells and rat lung tissues. Inhibition of CAII by acetazolamide or methazolamide delayed the decrease in the intracellular pH observed during hypercapnia in cultured AECI, AECII, and AECI-like cells. In an isolated-perfused rat lung model, alveolar fluid reabsorption significantly decreased during high CO(2) exposure, which was not prevented by carbonic anhydrase inhibition. Thus, we provide evidence that CAII is expressed in rat alveolar epithelial cells and does not regulate lung alveolar fluid reabsorption during hypercapnia.
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Affiliation(s)
- Jiwang Chen
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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42
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Dada LA, Novoa E, Lecuona E, Sun H, Sznajder JI. Role of the small GTPase RhoA in the hypoxia-induced decrease of plasma membrane Na,K-ATPase in A549 cells. J Cell Sci 2007; 120:2214-22. [PMID: 17550967 DOI: 10.1242/jcs.003038] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Hypoxia impairs alveolar fluid reabsorption by promoting Na,K-ATPase endocytosis, from the plasma membrane of alveolar epithelial cells. The present study was designed to determine whether hypoxia induces Na,K-ATPase endocytosis via reactive oxygen species (ROS)-mediated RhoA activation. In A549 cells, RhoA activation occurred within 15 minutes of cells exposure to hypoxia. This activation was inhibited in cells infected with adenovirus coding for gluthatione peroxidase (an H2O2 scavenger), in mitochondria depleted (rho0) cells or cells expressing decreased levels of the Rieske iron-sulfur protein (inhibitor of mitochondrial complex III), which suggests a role for mitochondrial ROS. Moreover, exogenous H2O2 treatment during normoxia mimicked the effects of hypoxia on RhoA, further supporting a role for ROS. Cells expressing dominant negative RhoA failed to endocytose the Na,K-ATPase during hypoxia or after H2O2 treatment. Na,K-ATPase endocytosis was also prevented in cells treated with Y-27632, a Rho-associated kinase (ROCK) inhibitor, and in cells expressing dominant negative ROCK. In summary, we provide evidence that in human alveolar epithelial cells exposed to hypoxia, RhoA/ROCK activation is necessary for Na,K-ATPase endocytosis via a mechanism that requires mitochondrial ROS.
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Affiliation(s)
- Laura A Dada
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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Comellas A, Briva A, Butti M, Chen J, Litvan J, Azzam Z, Lecuona E, Pesce L, Yanagisawa M, Sznajder JI. 32 ENDOTHELIN 1 DECREASES LUNG EDEMA CLEARANCE IN ALVEOLAR EPITHELIAL CELLS VIA ENDOTHELIAL ET-B RECEPTOR ACTIVATION AND NITRIC OXIDE GENERATION. J Investig Med 2007. [DOI: 10.1136/jim-55-02-32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Lecuona E, Dada LA, Sun H, Butti ML, Zhou G, Chew TL, Sznajder JI. Na,K‐ATPase α1‐subunit dephosphorylation by protein phosphatase 2A is necessary for its recruitment to the plasma membrane. FASEB J 2006; 20:2618-20. [PMID: 17065225 DOI: 10.1096/fj.06-6503fje] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In alveolar epithelial cells, G-protein coupled-receptors agonists (GPCR) induce the recruitment of the Na,K-ATPase to the plasma membrane. Here we report that for the recruitment of the Na,K-ATPase to occur, dephosphorylation of its alpha1-subunit at serine 18 is necessary, as demonstrated by in vitro phosphorylation, mutation of the serine 18 to alanine, and use of a specific phospho-antibody. Several approaches strongly suggest dephosphorylation to be mediated by protein phosphatase 2A (PP2A): 1) Na,K-ATPase dephosphorylation and recruitment were prevented by okadaic acid (OA); 2) the Na,K-ATPase alpha1-subunit is an in vitro substrate for PP2A; and 3) glutathione S-transferase (GST)-fusion proteins binding assays demonstrate a direct interaction between the catalytic subunit of PP2A and the first 90 amino acids of the Na,K-ATPase alpha1-subunit. Finally, GPCR agonists induced a rapid translocation of PP2A from the cytosol to the membrane fraction, which corresponded with increased coimmunoprecipitation and colocalization of PP2A and the Na,K-ATPase. Accordingly, we provide evidence that GPCR agonists promote PP2A translocation to the membrane fraction, leading to the dephosphorylation of the Na,K-ATPase alpha1-subunit at the serine 18 residue and its recruitment to the cell plasma membrane, which is of biological and physiological importance.
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Affiliation(s)
- Emilia Lecuona
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, 240 E. Huron, McGaw M410, Chicago, IL 60611, USA.
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Vadasz I, Dada LA, Lecuona E, Briva A, Welch LC, Chen J, Sznajder J. HYPERCAPNIA IMPAIRS ALVEOLAR FLUID CLEARANCE VIA PROTEIN KINASE CASCADE SIGNALING. Chest 2006. [DOI: 10.1378/chest.130.4_meetingabstracts.85s-d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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46
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Comellas AP, Dada LA, Lecuona E, Pesce LM, Chandel NS, Quesada N, Budinger GRS, Strous GJ, Ciechanover A, Sznajder JI. Hypoxia-mediated degradation of Na,K-ATPase via mitochondrial reactive oxygen species and the ubiquitin-conjugating system. Circ Res 2006; 98:1314-22. [PMID: 16614303 DOI: 10.1161/01.res.0000222418.99976.1d] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We set out to determine whether cellular hypoxia, via mitochondrial reactive oxygen species, promotes Na,K-ATPase degradation via the ubiquitin-conjugating system. Cells exposed to 1.5% O2 had a decrease in Na,K-ATPase activity and oxygen consumption. The total cell pool of alpha1 Na,K-ATPase protein decreased on exposure to 1.5% O2 for 30 hours, whereas the plasma membrane Na,K-ATPase was 50% degraded after 2 hours of hypoxia, which was prevented by lysosome and proteasome inhibitors. When Chinese hamster ovary cells that exhibit a temperature-sensitive defect in E1 ubiquitin conjugation enzyme were incubated at 40 degrees C and 1.5% O2, the degradation of the alpha1 Na,K-ATPase was prevented. Exogenous reactive oxygen species increased the plasma membrane Na,K-ATPase degradation, whereas, in mitochondrial DNA deficient rho(0) cells and in cells transfected with small interfering RNA against Rieske iron sulfur protein, the hypoxia-mediated Na,K-ATPase degradation was prevented. The catalase/superoxide dismutase (SOD) mimetic (EUK-134) and glutathione peroxidase overexpression prevented the hypoxia-mediated Na,K-ATPase degradation and overexpression of SOD1, but not SOD2, partially inhibited the Na+ pump degradation. Accordingly, we provide evidence that during hypoxia, mitochondrial reactive oxygen species are necessary to degrade the plasma membrane Na,K-ATPase via the ubiquitin-conjugating system.
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Affiliation(s)
- Alejandro P Comellas
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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Comellas A, Litvan J, Briva A, Lecuona E, Chen J, Sznajder JI. Endothelin decreases lung edema clearance and Na,K‐ATPase activity in alveolar epithelial cells via ET‐B receptor and Nitric Oxide generation. FASEB J 2006. [DOI: 10.1096/fasebj.20.5.a1071-c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alejandro Comellas
- Pulmonary & Critical Care MedicineNorthwestern University240 E Huron St., Mc‐Gaw M‐300ChicagoIl60611
| | - Juan Litvan
- Pulmonary & Critical Care MedicineNorthwestern University240 E Huron St., Mc‐Gaw M‐300ChicagoIl60611
| | - Arturo Briva
- Pulmonary & Critical Care MedicineNorthwestern University240 E Huron St., Mc‐Gaw M‐300ChicagoIl60611
| | - Emilia Lecuona
- Pulmonary & Critical Care MedicineNorthwestern University240 E Huron St., Mc‐Gaw M‐300ChicagoIl60611
| | - Jiwang Chen
- Pulmonary & Critical Care MedicineNorthwestern University240 E Huron St., Mc‐Gaw M‐300ChicagoIl60611
| | - Jacob I Sznajder
- Pulmonary & Critical Care MedicineNorthwestern University240 E Huron St., Mc‐Gaw M‐300ChicagoIl60611
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Briva A, Welch L, Chen J, Myrianthefs P, Azzam Z, Lecuona E, Dumasius V, Batlle D, Gruenbaum Y, Sznajder JI. ALVEOLAR FLUID REABSORPTION IS IMPAIRED BY HYPERCAPNIA INDEPENDENTLY OF EXTRACELLULAR AND INTRACELLULAR PH. Chest 2005. [DOI: 10.1378/chest.128.4_meetingabstracts.129s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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49
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Jones JCR, Lane K, Hopkinson SB, Lecuona E, Geiger RC, Dean DA, Correa-Meyer E, Gonzales M, Campbell K, Sznajder JI, Budinger S. Laminin-6 assembles into multimolecular fibrillar complexes with perlecan and participates in mechanical-signal transduction via a dystroglycan-dependent, integrin-independent mechanism. J Cell Sci 2005; 118:2557-66. [PMID: 15928048 PMCID: PMC2820238 DOI: 10.1242/jcs.02395] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Mechanical ventilation is a valuable treatment regimen for respiratory failure. However, mechanical ventilation (especially with high tidal volumes) is implicated in the initiation and/or exacerbation of lung injury. Hence, it is important to understand how the cells that line the inner surface of the lung [alveolar epithelial cells (AECs)] sense cyclic stretching. Here, we tested the hypothesis that matrix molecules, via their interaction with surface receptors, transduce mechanical signals in AECs. We first determined that rat AECs secrete an extracellular matrix (ECM) rich in anastamosing fibers composed of the alpha3 laminin subunit, complexed with beta1 and gamma1 laminin subunits (i.e. laminin-6), and perlecan by a combination of immunofluorescence microscopy and immunoblotting analyses. The fibrous network exhibits isotropic expansion when exposed to cyclic stretching (30 cycles per minute, 10% strain). Moreover, this same stretching regimen activates mitogen-activated-protein kinase (MAPK) in AECs. Stretch-induced MAPK activation is not inhibited in AECs treated with antagonists to alpha3 or beta1 integrin. However, MAPK activation is significantly reduced in cells treated with function-inhibiting antibodies against the alpha3 laminin subunit and dystroglycan, and when dystroglycan is knocked down in AECs using short hairpin RNA. In summary, our results support a novel mechanism by which laminin-6, via interaction with dystroglycan, transduces a mechanical signal initiated by stretching that subsequently activates the MAPK pathway in rat AECs. These results are the first to indicate a function for laminin-6. They also provide novel insight into the role of the pericellular environment in dictating the response of epithelial cells to mechanical stimulation and have broad implications for the pathophysiology of lung injury.
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Affiliation(s)
- Jonathan C R Jones
- Division of Pulmonary Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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Myrianthefs PM, Briva A, Lecuona E, Dumasius V, Rutschman DH, Ridge KM, Baltopoulos GJ, Sznajder JI. Hypocapnic but not metabolic alkalosis impairs alveolar fluid reabsorption. Am J Respir Crit Care Med 2005; 171:1267-71. [PMID: 15764729 PMCID: PMC2718461 DOI: 10.1164/rccm.200408-998oc] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Acid-base disturbances, such as metabolic or respiratory alkalosis, are relatively common in critically ill patients. We examined the effects of alkalosis (hypocapnic or metabolic alkalosis) on alveolar fluid reabsorption in the isolated and continuously perfused rat lung model. We found that alveolar fluid reabsorption after 1 hour was impaired by low levels of CO2 partial pressure (PCO2; 10 and 20 mm Hg) independent of pH levels (7.7 or 7.4). In addition, PCO2 higher than 30 mm Hg or metabolic alkalosis did not have an effect on this process. The hypocapnia-mediated decrease of alveolar fluid reabsorption was associated with decreased Na,K-ATPase activity and protein abundance at the basolateral membranes of distal airspaces. The effect of low PCO2 on alveolar fluid reabsorption was reversible because clearance normalized after correcting the PCO2 back to normal levels. These data suggest that hypocapnic but not metabolic alkalosis impairs alveolar fluid reabsorption. Conceivably, correction of hypocapnic alkalosis in critically ill patients may contribute to the normalization of lung ability to clear edema.
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Affiliation(s)
- Pavlos M Myrianthefs
- Division of Pulmonary and Critical Care Medicine, 240 East Huron, McGaw 2-2300, Northwestern University, Chicago, IL 60611, USA
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