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Zeineh N, Nagler RM, Gabay M, Obeid F, Kahana M, Weizman A, Gavish M. The TSPO Ligands MGV-1 and 2-Cl-MGV-1 Differentially Inhibit the Cigarette Smoke-Induced Cytotoxicity to H1299 Lung Cancer Cells. BIOLOGY 2021; 10:biology10050395. [PMID: 34063262 PMCID: PMC8147464 DOI: 10.3390/biology10050395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/17/2021] [Accepted: 04/29/2021] [Indexed: 12/03/2022]
Abstract
Simple Summary In this study, we investigated the impact of CS on various TSPO-related mitochondrial processes, and the protective ability of our novel TSPO ligands against such CS-induced cellular damages. Our results support the previously reported role of TSPO in apoptotic cell death. Moreover, the present data demonstrate the protective effect of our TSPO ligands against CS-induced cellular damage. Abstract TSPO is involved in cigarette smoke (CS)-induced cellular toxicity, which may result in oral and pulmonary diseases and lung cancer. H1299 lung cancer cells were exposed directly to CS. The H1299 cells were pretreated with our TSPO ligands MGV-1 and 2-Cl-MGV-1 (Ki = 825 nM for both) at a concentration of 25 µM 24 h prior to CS exposure. Cell death and apoptotic markers were measured, in addition to TSPO expression levels, ATP synthase activity, generation of reactive oxygen species (ROS), depolarization of mitochondrial membrane potential (ΔΨm), cAMP and LDH levels. Pretreatment with MGV-1 and 2-Cl-MGV-1 (25 µM), 24 h prior to CS exposure, differentially attenuated the CS-induced cellular insult as well as cell death in H1299 lung cancer cells. These protective effects included prevention of ATP synthase reversal, ROS generation, depolarization of the mitochondrial membrane and elevation in LDH. The preventive efficacy of 2-Cl-MGV-1 was superior to that achieved by MGV-1. Both ligands did not prevent the elevation in cAMP. These findings may indicate a mild protective effect of these TSPO ligands in CS-related pulmonary and keratinocyte cellular pathology.
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Affiliation(s)
- Nidal Zeineh
- Department of Neuroscience, The Ruth and Bruce Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa 31096, Israel; (N.Z.); (R.M.N.); (M.G.); (F.O.); (M.K.)
| | - Rafael M. Nagler
- Department of Neuroscience, The Ruth and Bruce Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa 31096, Israel; (N.Z.); (R.M.N.); (M.G.); (F.O.); (M.K.)
| | - Martin Gabay
- Department of Neuroscience, The Ruth and Bruce Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa 31096, Israel; (N.Z.); (R.M.N.); (M.G.); (F.O.); (M.K.)
| | - Fadi Obeid
- Department of Neuroscience, The Ruth and Bruce Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa 31096, Israel; (N.Z.); (R.M.N.); (M.G.); (F.O.); (M.K.)
| | - Meygal Kahana
- Department of Neuroscience, The Ruth and Bruce Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa 31096, Israel; (N.Z.); (R.M.N.); (M.G.); (F.O.); (M.K.)
| | - Abraham Weizman
- Research Unit, Geha Mental Health Center and Laboratory of Biological Psychiatry, Felsenstein Medical Research Center, Petah Tikva 4910002, Israel;
- Departments of Psychiatry, Physiology and Pharmacology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Moshe Gavish
- Department of Neuroscience, The Ruth and Bruce Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa 31096, Israel; (N.Z.); (R.M.N.); (M.G.); (F.O.); (M.K.)
- Correspondence: ; Tel.: +972-4829-5275; Fax: +972-4829-5330
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Regulation of cell growth, survival and migration by ceramide 1-phosphate - implications in lung cancer progression and inflammation. Cell Signal 2021; 83:109980. [PMID: 33727076 DOI: 10.1016/j.cellsig.2021.109980] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 01/10/2023]
Abstract
Ceramide 1-phosphate (C1P) is a bioactive sphingolipid that is implicated in the regulation of vital cellular functions and plays key roles in a number of inflammation-associated pathologies. C1P was first described as mitogenic for fibroblasts and macrophages and was later found to promote cell survival in different cell types. The mechanisms involved in the mitogenic actions of C1P include activation of MEK/ERK1-2, PI3K/Akt/mTOR, or PKC-α, whereas promotion of cell survival required a substantial reduction of ceramide levels through inhibition of serine palmitoyl transferase or sphingomyelinase activities. C1P and ceramide kinase (CerK), the enzyme responsible for its biosynthesis in mammalian cells, play key roles in tumor promotion and dissemination. CerK-derived C1P can be secreted to the extracellular milieu by different cell types and is also present in extracellular vesicles. In this context, whilst cell proliferation is regulated by intracellularly generated C1P, stimulation of cell migration/invasion requires the intervention of exogenous C1P. Regarding inflammation, C1P was first described as pro-inflammatory in a variety of cell types. However, cigarette smoke- or lipopolysaccharide-induced lung inflammation in mouse or human cells was overcome by pretreatment with natural or synthetic C1P analogs. Both acute and chronic lung inflammation, and the development of lung emphysema were substantially reduced by exogenous C1P applications, pointing to an anti-inflammatory action of C1P in the lungs. The molecular mechanisms involved in the regulation of cell growth, survival and migration with especial emphasis in the control of lung cancer biology are discussed.
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Jiang J, Shi Y, Cao J, Lu Y, Sun G, Yang J. Role of ASM/Cer/TXNIP signaling module in the NLRP3 inflammasome activation. Lipids Health Dis 2021; 20:19. [PMID: 33612104 PMCID: PMC7897379 DOI: 10.1186/s12944-021-01446-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 02/08/2021] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND This study aimed to explore the effects of ceramide (Cer) on NLRP3 inflammasome activation and their underlying mechanisms. METHODS Lipopolysaccharide (LPS)/adenosine triphosphate (ATP)-induced NLRP3 inflammasome activation in J774A.1 cells and THP-1 macrophages was used as an in vitro model of inflammation. Western blotting and real-time PCR (RT-PCR) were used to detect the protein and mRNA levels, respectively. IL-1β and IL-18 levels were measured by ELISA. ASM assay kit and immunofluorescence were used to detect ASM activity and Cer content. RESULTS Imipramine, a well-known inhibitor of ASM, significantly inhibited LPS/ATP-induced activity of ASM and the consequent accumulation of Cer. Additionally, imipramine suppressed the LPS/ATP-induced expression of thioredoxin interacting protein (TXNIP), NLRP3, caspase-1, IL-1β, and IL-18 at the protein and mRNA level. Interestingly verapamil, a TXNIP inhibitor, suppressed LPS/ATP-induced activation of TXNIP/NLRP3 inflammasome but did not affect LPS/ATP-induced ASM activation and Cer formation. TXNIP siRNA and verapamil inhibited C2-Cer-induced upregulation of TXNIP and activation of the NLRP3 inflammasome. In addition, the pretreatment of cells with sulfo-N-succinimidyl oleate (SSO), an irreversible inhibitor of the scavenger receptor CD36, blocked Cer-induced upregulation of nuclear factor-κB (NF-κB) activity, TXNIP expression, and NLRP3 inflammasome activation. Inhibition of NF-κB activation by SN50 prevented Cer-induced upregulation of TXNIP and activation of the NLRP3 inflammasome but did not affect CD36 expression. CONCLUSION This study demonstrated that the ASM/Cer/TXNIP signaling pathway is involved in NLRP3 inflammasome activation. The results documented that the CD36-dependent NF-κB-TXNIP signaling pathway plays an essential role in the Cer-induced activation of NLRP3 inflammasomes in macrophages.
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Affiliation(s)
- Jianjun Jiang
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, Anhui, China
| | - Yining Shi
- Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, Anhui, China
| | - Jiyu Cao
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, 230032, Anhui, China
| | - Youjin Lu
- Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, Anhui, China
| | - Gengyun Sun
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei, 230022, Anhui, China.
| | - Jin Yang
- Department of Respiratory and Critical Care Medicine, the Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei, 230601, Anhui, China.
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Chatterjee S, Balram A, Li W. Convergence: Lactosylceramide-Centric Signaling Pathways Induce Inflammation, Oxidative Stress, and Other Phenotypic Outcomes. Int J Mol Sci 2021; 22:ijms22041816. [PMID: 33673027 PMCID: PMC7917694 DOI: 10.3390/ijms22041816] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/02/2021] [Accepted: 02/06/2021] [Indexed: 12/19/2022] Open
Abstract
Lactosylceramide (LacCer), also known as CD17/CDw17, is a member of a large family of small molecular weight compounds known as glycosphingolipids. It plays a pivotal role in the biosynthesis of glycosphingolipids, primarily by way of serving as a precursor to the majority of its higher homolog sub-families such as gangliosides, sulfatides, fucosylated-glycosphingolipids and complex neutral glycosphingolipids—some of which confer “second-messenger” and receptor functions. LacCer is an integral component of the “lipid rafts,” serving as a conduit to transduce external stimuli into multiple phenotypes, which may contribute to mortality and morbidity in man and in mouse models of human disease. LacCer is synthesized by the action of LacCer synthase (β-1,4 galactosyltransferase), which transfers galactose from uridine diphosphate galactose (UDP-galactose) to glucosylceramide (GlcCer). The convergence of multiple physiologically relevant external stimuli/agonists—platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), stress, cigarette smoke/nicotine, tumor necrosis factor-α (TNF-α), and in particular, oxidized low-density lipoprotein (ox-LDL)—on β-1,4 galactosyltransferase results in its phosphorylation or activation, via a “turn-key” reaction, generating LacCer. This newly synthesized LacCer activates NADPH (nicotinamide adenine dihydrogen phosphate) oxidase to generate reactive oxygen species (ROS) and a highly “oxidative stress” environment, which trigger a cascade of signaling molecules and pathways and initiate diverse phenotypes like inflammation and atherosclerosis. For instance, LacCer activates an enzyme, cytosolic phospholipase A2 (cPLA2), which cleaves arachidonic acid from phosphatidylcholine. In turn, arachidonic acid serves as a precursor to eicosanoids and prostaglandin, which transduce a cascade of reactions leading to inflammation—a major phenotype underscoring the initiation and progression of several debilitating diseases such as atherosclerosis and cancer. Our aim here is to present an updated account of studies made in the field of LacCer metabolism and signaling using multiple animal models of human disease, human tissue, and cell-based studies. These advancements have led us to propose that previously unrelated phenotypes converge in a LacCer-centric manner. This LacCer synthase/LacCer-induced “oxidative stress” environment contributes to inflammation, atherosclerosis, skin conditions, hair greying, cardiovascular disease, and diabetes due to mitochondrial dysfunction. Thus, targeting LacCer synthase may well be the answer to remedy these pathologies.
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Berdyshev EV, Serban KA, Schweitzer KS, Bronova IA, Mikosz A, Petrache I. Ceramide and sphingosine-1 phosphate in COPD lungs. Thorax 2021; 76:thoraxjnl-2020-215892. [PMID: 33514670 PMCID: PMC9004347 DOI: 10.1136/thoraxjnl-2020-215892] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 12/17/2020] [Accepted: 01/07/2021] [Indexed: 11/04/2022]
Abstract
Studies of chronic obstructive pulmonary disease (COPD) using animal models and patient plasma indicate dysregulation of sphingolipid metabolism, but data in COPD lungs are sparse. Mass spectrometric and immunostaining measurements of lungs from 69 COPD, 16 smokers without COPD and 13 subjects with interstitial lung disease identified decoupling of lung ceramide and sphingosine-1 phosphate (S1P) levels and decreased sphingosine kinase-1 (SphK1) activity in COPD. The correlation of ceramide abundance in distal COPD lungs with apoptosis and the inverse correlation between SphK1 activity and presence of emphysema suggest that disruption of ceramide-to-S1P metabolism is an important determinant of emphysema phenotype in COPD.
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Affiliation(s)
- Evgeny V Berdyshev
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
- Department of Medicine, University of Illinois Chicago, Chicago, Illinois, USA
| | - Karina A Serban
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
- School of Medicine, Indiana University, Indianapolis, Indiana, USA
- School of Medicine, University of Colorado Denver, Aurora, Colorado, USA
| | - Kelly S Schweitzer
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
- School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Irina A Bronova
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
- Department of Medicine, University of Illinois Chicago, Chicago, Illinois, USA
| | - Andrew Mikosz
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Irina Petrache
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
- School of Medicine, Indiana University, Indianapolis, Indiana, USA
- School of Medicine, University of Colorado Denver, Aurora, Colorado, USA
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Acid Ceramidase Rescues Cystic Fibrosis Mice from Pulmonary Infections. Infect Immun 2021; 89:IAI.00677-20. [PMID: 33139382 PMCID: PMC7822142 DOI: 10.1128/iai.00677-20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/27/2022] Open
Abstract
Previous studies have shown that sphingosine kills a variety of pathogenic bacteria, including Pseudomonas aeruginosa and Staphylococcus aureus. Sphingosine concentrations are decreased in airway epithelial cells of cystic fibrosis (CF) mice, and this defect has been linked to the infection susceptibility of these mice. Here, we tested whether the genetic overexpression of acid ceramidase rescues cystic fibrosis mice from pulmonary infections with P. aeruginosa. Previous studies have shown that sphingosine kills a variety of pathogenic bacteria, including Pseudomonas aeruginosa and Staphylococcus aureus. Sphingosine concentrations are decreased in airway epithelial cells of cystic fibrosis (CF) mice, and this defect has been linked to the infection susceptibility of these mice. Here, we tested whether the genetic overexpression of acid ceramidase rescues cystic fibrosis mice from pulmonary infections with P. aeruginosa. We demonstrate that the transgenic overexpression of acid ceramidase in CF mice corresponds to the overexpression of acid ceramidase in bronchial and tracheal epithelial cells and normalizes ceramide and sphingosine levels in bronchial and tracheal epithelial cells. In addition, the expression of β1-integrin, which is ectopically expressed on the luminal surface of airway epithelial cells in cystic fibrosis mice, an alteration that is very important for mediating pulmonary P. aeruginosa infections in cystic fibrosis, is normalized in cystic fibrosis airways upon the overexpression of acid ceramidase. Most importantly, the overexpression of acid ceramidase protects cystic fibrosis mice from pulmonary P. aeruginosa infections. Infection of CF mice or CF mice that inhaled sphingosine with P. aeruginosa or a P. aeruginosa mutant that is resistant to sphingosine indicates that sphingosine and not a metabolite kills P. aeruginosa upon pulmonary infection. These studies further support the use of acid ceramidase and its metabolite sphingosine as potential treatments of cystic fibrosis.
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Li L, Xu M, Rowan SC, Howell K, Russell-Hallinan A, Donnelly SC, McLoughlin P, Baugh JA. The effects of genetic deletion of Macrophage migration inhibitory factor on the chronically hypoxic pulmonary circulation. Pulm Circ 2021; 10:2045894020941352. [PMID: 33447370 PMCID: PMC7780187 DOI: 10.1177/2045894020941352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 06/18/2020] [Indexed: 11/17/2022] Open
Abstract
While it is well established that the haemodynamic cause of hypoxic pulmonary hypertension is increased pulmonary vascular resistance, the molecular pathogenesis of the increased resistance remains incompletely understood. Macrophage migration inhibitory factor is a pleiotropic cytokine with endogenous tautomerase enzymatic activity as well as both intracellular and extracellular signalling functions. In several diseases, macrophage migration inhibitory factor has pro-inflammatory roles that are dependent upon signalling through the cell surface receptors CD74, CXCR2 and CXCR4. Macrophage migration inhibitory factor expression is increased in animal models of hypoxic pulmonary hypertension and macrophage migration inhibitory factor tautomerase inhibitors, which block some of the functions of macrophage migration inhibitory factor, and have been shown to attenuate hypoxic pulmonary hypertension in mice and monocrotaline-induced pulmonary hypertension in rats. However, because of the multiple pathways through which it acts, the integrated actions of macrophage migration inhibitory factor during the development of hypoxic pulmonary hypertension were unclear. We report here that isolated lungs from adult macrophage migration inhibitory factor knockout (MIF-/- ) mice maintained in normoxic conditions showed greater acute hypoxic vasoconstriction than the lungs of wild type mice (MIF+/+ ). Following exposure to hypoxia for three weeks, isolated lungs from MIF-/- mice had significantly higher pulmonary vascular resistance than those from MIF+/+ mice. The major mechanism underlying the greater increase in pulmonary vascular resistance in the hypoxic MIF-/- mice was reduction of the pulmonary vascular bed due to an impairment of the normal hypoxia-induced expansion of the alveolar capillary network. Taken together, these results demonstrate that macrophage migration inhibitory factor plays a central role in the development of the pulmonary vascular responses to chronic alveolar hypoxia.
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Affiliation(s)
- Lili Li
- UCD Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Maojia Xu
- UCD Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Simon C Rowan
- UCD Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Katherine Howell
- UCD Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Adam Russell-Hallinan
- UCD Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - Seamas C Donnelly
- Department of Medicine, Tallaght University Hospital & Trinity College Dublin, Dublin, Ireland
| | - Paul McLoughlin
- UCD Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | - John A Baugh
- UCD Conway Institute for Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
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Lavrynenko O, Titz B, Dijon S, Santos DD, Nury C, Schneider T, Guedj E, Szostak J, Kondylis A, Phillips B, Ekroos K, Martin F, Peitsch MC, Hoeng J, Ivanov NV. Ceramide ratios are affected by cigarette smoke but not heat-not-burn or e-vapor aerosols across four independent mouse studies. Life Sci 2020; 263:118753. [PMID: 33189821 DOI: 10.1016/j.lfs.2020.118753] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/03/2020] [Accepted: 11/10/2020] [Indexed: 11/16/2022]
Abstract
AIMS Smoking is an important risk factor for the development of chronic obstructive pulmonary disease and cardiovascular diseases. This study aimed to further elucidate the role of ceramides, as a key lipid class dysregulated in disease states. MAIN METHODS In this article we developed and validated LC-MS/MS method for ceramides (Cer(d18:1/16:0), Cer(d18:1/18:0), Cer(d18:1/24:0) and Cer(d18:1/24:1(15Z)) for the absolute quantification. We deployed it together with proteomics and transcriptomic analysis to assess the effects of cigarette smoke (CS) from the reference cigarette as well as aerosols from heat-not-burn (HnB) tobacco and e-vapor products in apolipoprotein E-deficient (ApoE-/-) mice over several time points. KEY FINDINGS In the lungs, CS exposure substantially elevated the ratios of Cer(d18:1/24:0) and Cer(d18:1/24:1) to Cer(d18:1/18:0) in two independent ApoE-/- mouse inhalation studies. Data from previous studies, in both ApoE-/- and wild-type mice, further confirmed the reproducibility of this finding. Elevation of these ceramide ratios was also observed in plasma/serum, the liver, and-for the Cer(d18:1/24:1(15Z)) to Cer(d18:1/18:0) ratio-the abdominal aorta. Also, the levels of acid ceramidase (Asah1) and glucocerebrosidase (Gba)-lysosomal enzymes involved in the hydrolysis of glucosylceramides-were consistently elevated in the lungs after CS exposure. In contrast, exposure to HnB tobacco product and e-vapor aerosols did not induce significant changes in the ceramide profiles or associated enzymes. SIGNIFICANCE Our work in mice contributes to the accumulating evidence on the importance of ceramide ratios as biologically relevant markers for respiratory disorders, adding to their already demonstrated role in cardiovascular disease risk assessment in humans.
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Affiliation(s)
- Oksana Lavrynenko
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland.
| | - Bjoern Titz
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Sophie Dijon
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Daniel Dos Santos
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Catherine Nury
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Thomas Schneider
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Emmanuel Guedj
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Justyna Szostak
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Athanasios Kondylis
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Blaine Phillips
- Philip Morris International Research Laboratories Pte. Ltd., Science Park II, 117406, Singapore
| | - Kim Ekroos
- Lipidomics Consulting Ltd., Irisviksvägen 31D, 02230 Esbo, Finland
| | - Florian Martin
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
| | - Nikolai V Ivanov
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland
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Ventura A, Varela A, Dingjan T, Santos T, Fedorov A, Futerman A, Prieto M, Silva L. Lipid domain formation and membrane shaping by C24-ceramide. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183400. [DOI: 10.1016/j.bbamem.2020.183400] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/05/2020] [Accepted: 06/15/2020] [Indexed: 01/29/2023]
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Railwah C, Lora A, Zahid K, Goldenberg H, Campos M, Wyman A, Jundi B, Ploszaj M, Rivas M, Dabo A, Majka SM, Foronjy R, El Gazzar M, Geraghty P. Cigarette smoke induction of S100A9 contributes to chronic obstructive pulmonary disease. Am J Physiol Lung Cell Mol Physiol 2020; 319:L1021-L1035. [PMID: 32964723 DOI: 10.1152/ajplung.00207.2020] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
S100 calcium-binding protein A9 (S100A9) is elevated in plasma and bronchoalveolar lavage fluid (BALF) of patients with chronic obstructive pulmonary disease (COPD), and aging enhances S100A9 expression in several tissues. Currently, the direct impact of S100A9-mediated signaling on lung function and within the aging lung is unknown. Here, we observed that elevated S100A9 levels in human BALF correlated with age. Elevated lung levels of S100A9 were higher in older mice compared with in young animals and coincided with pulmonary function changes. Both acute and chronic exposure to cigarette smoke enhanced S100A9 levels in age-matched mice. To examine the direct role of S100A9 on the development of COPD, S100a9-/- mice or mice administered paquinimod were exposed to chronic cigarette smoke. S100A9 depletion and inhibition attenuated the loss of lung function, pressure-volume loops, airway inflammation, lung compliance, and forced expiratory volume in 0.05 s/forced vital capacity, compared with age-matched wild-type or vehicle-administered animals. Loss of S100a9 signaling reduced cigarette smoke-induced airspace enlargement, alveolar remodeling, lung destruction, ERK and c-RAF phosphorylation, matrix metalloproteinase-3 (MMP-3), matrix metalloproteinase-9 (MMP-9), monocyte chemoattractant protein-1 (MCP-1), interleukin-6 (IL-6), and keratinocyte-derived chemokine (KC) release into the airways. Paquinimod administered to nonsmoked, aged animals reduced age-associated loss of lung function. Since fibroblasts play a major role in the production and maintenance of extracellular matrix in emphysema, primary lung fibroblasts were treated with the ERK inhibitor LY3214996 or the c-RAF inhibitor GW5074, resulting in less S100A9-induced MMP-3, MMP-9, MCP-1, IL-6, and IL-8. Silencing Toll-like receptor 4 (TLR4), receptor for advanced glycation endproducts (RAGE), or extracellular matrix metalloproteinase inducer (EMMPRIN) prevented S100A9-induced phosphorylation of ERK and c-RAF. Our data suggest that S100A9 signaling contributes to the progression of smoke-induced and age-related COPD.
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Affiliation(s)
- Christopher Railwah
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Alnardo Lora
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Kanza Zahid
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Hannah Goldenberg
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Michael Campos
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, University of Miami Miller School of Medicine, Miami, Florida
| | - Anne Wyman
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Bakr Jundi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Magdalena Ploszaj
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Melissa Rivas
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Abdoulaye Dabo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York.,Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Susan M Majka
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado
| | - Robert Foronjy
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York.,Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, New York
| | - Mohamed El Gazzar
- Department of Internal Medicine, Quillen College of Medicine, East Tennessee State University, Johnson City, Tennessee
| | - Patrick Geraghty
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, State University of New York Downstate Health Sciences University, Brooklyn, New York.,Department of Cell Biology, State University of New York Downstate Health Sciences University, Brooklyn, New York
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61
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Liu D, Meister M, Zhang S, Vong CI, Wang S, Fang R, Li L, Wang PG, Massion P, Ji X. Identification of lipid biomarker from serum in patients with chronic obstructive pulmonary disease. Respir Res 2020; 21:242. [PMID: 32957957 PMCID: PMC7507726 DOI: 10.1186/s12931-020-01507-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 09/11/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is the third leading cause of death in the United States with no effective treatment. The current diagnostic method, spirometry, does not accurately reflect the severity of COPD disease status. Therefore, there is a pressing unmet medical need to develop noninvasive methods and reliable biomarkers to detect early stages of COPD. Lipids are the fundamental components of cell membranes, and dysregulation of lipids was proven to be associated with COPD. Lipidomics is a comprehensive approach to all the pathways and networks of cellular lipids in biological systems. It is widely used for disease diagnosis, biomarker identification, and pathology disorders detection relating to lipid metabolism. METHODS In the current study, a total of 25 serum samples were collected from 5 normal control subjects and 20 patients with different stages of COPD according to the global initiative for chronic obstructive lung disease (GOLD) (GOLD stages I ~ IV, 5 patients per group). After metabolite extraction, lipidomic analysis was performed using electrospray ionization mass spectrometry (ESI-MS) to detect the serum lipid species. Later, the comparisons of individual lipids were performed between controls and patients with COPD. Orthogonal projections to latent structures discriminant analysis (OPLS-DA) and receiver operating characteristic (ROC) analysis were utilized to test the potential biomarkers. Finally, correlations between the validated lipidomic biomarkers and disease stages, age, FEV1% pack years and BMI were evaluated. RESULTS Our results indicate that a panel of 50 lipid metabolites including phospholipids, sphingolipids, glycerolipids, and cholesterol esters can be used to differentiate the presence of COPD. Among them, 10 individual lipid species showed significance (p < 0.05) with a two-fold change. In addition, lipid ratios between every two lipid species were also evaluated as potential biomarkers. Further multivariate data analysis and receiver operating characteristic (ROC: 0.83 ~ 0.99) analysis suggest that four lipid species (AUC:0.86 ~ 0.95) and ten lipid ratios could be potential biomarkers for COPD (AUC:0.94 ~ 1) with higher sensitivity and specificity. Further correlation analyses indicate these potential biomarkers were not affected age, BMI, stages and FEV1%, but were associated with smoking pack years. CONCLUSION Using lipidomics and statistical methods, we identified unique lipid signatures as potential biomarkers for diagnosis of COPD. Further validation studies of these potential biomarkers with large population may elucidate their roles in the development of COPD.
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Affiliation(s)
- Ding Liu
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Maureen Meister
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
- Department of Nutrition, Georgia State University, Atlanta, 30302, USA
| | - Shiying Zhang
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Chi-In Vong
- Department of Nutrition, Georgia State University, Atlanta, 30302, USA
| | - Shuaishuai Wang
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Ruixie Fang
- Department of Mathematics and Statistics, Georgia State University, Atlanta, GA, 30302, USA
| | - Lei Li
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Peng George Wang
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA
| | - Pierre Massion
- Cancer Early Detection and Prevention Initiative, Vanderbilt Ingram Cancer Center; Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
| | - Xiangming Ji
- Department of Chemistry, Georgia State University, Atlanta, GA, 30303, USA.
- Department of Nutrition, Georgia State University, Atlanta, 30302, USA.
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62
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Zeng H, Li T, He X, Cai S, Luo H, Chen P, Chen Y. Oxidative stress mediates the apoptosis and epigenetic modification of the Bcl-2 promoter via DNMT1 in a cigarette smoke-induced emphysema model. Respir Res 2020; 21:229. [PMID: 32883320 PMCID: PMC7469342 DOI: 10.1186/s12931-020-01495-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/24/2020] [Indexed: 12/15/2022] Open
Abstract
Background Emphysema is a crucial pathological characteristic of chronic obstructive pulmonary disease (COPD). Oxidative stress, apoptosis and epigenetic mechanisms contribute to the pathogenesis of emphysema. However, an attempt to accurately identify whether these mechanisms interact with each other and how they are triggered has never been conducted. Method The total reactive oxygen species (ROS) level, pulmonary apoptosis and B-cell lymphoma/leukemia-2 (Bcl-2) expression, an apoptosis regulator, were detected in samples from COPD patients. Bisulfite sequencing PCR (BSP) was conducted to observe the alterations in the methylation of the Bcl-2 promoter in specimens. The dysregulation of DNA methyltransferase enzyme 1 (DNMT1), a vital DNA methyltransferase enzyme, in the lungs of patients was confirmed through western blotting. To find out interactions between oxidative stress and DNA methylation in emphysema, mouse models were built with antioxidant treatment and DNMT1 silencing, and were examined with the pulmonary apoptosis, Bcl-2 and DNMT1 levels, and epigenetic alterations of Bcl-2. Results Higher ROS levels and pulmonary apoptosis were observed in COPD patients than in healthy controls. Downregulated Bcl-2 expression with increased promoter methylation and DNMT1 protein expression was found in COPD patients. Antioxidant treatment reduced the level of ROS, DNMT1 protein and emphysematous progression in the smoking models. Following DNMT1 blockade, smoking models showed improved lung function, pulmonary apoptosis, emphysematous progression, and increased Bcl-2 protein level with less promoter methylation than emphysema mice. Conclusion Cigarette-induced oxidative stress mediates pulmonary apoptosis and hypermethylation of the Bcl-2 promoter in emphysema models through DNMT1.
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Affiliation(s)
- Huihui Zeng
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Diseases, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Hunan Centre for Evidence-based Medicine, No. 139 Renmin Road, Changsha, 410011, Hunan, China
| | - Tiao Li
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Diseases, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Hunan Centre for Evidence-based Medicine, No. 139 Renmin Road, Changsha, 410011, Hunan, China
| | - Xue He
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Diseases, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Hunan Centre for Evidence-based Medicine, No. 139 Renmin Road, Changsha, 410011, Hunan, China
| | - Shan Cai
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Diseases, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Hunan Centre for Evidence-based Medicine, No. 139 Renmin Road, Changsha, 410011, Hunan, China
| | - Hong Luo
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Diseases, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Hunan Centre for Evidence-based Medicine, No. 139 Renmin Road, Changsha, 410011, Hunan, China
| | - Ping Chen
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Research Unit of Respiratory Diseases, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China.,Hunan Centre for Evidence-based Medicine, No. 139 Renmin Road, Changsha, 410011, Hunan, China
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China. .,Research Unit of Respiratory Diseases, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, China. .,Hunan Centre for Evidence-based Medicine, No. 139 Renmin Road, Changsha, 410011, Hunan, China.
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63
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Xuan L, Han F, Gong L, Lv Y, Wan Z, Liu H, Ren L, Yang S, Zhang W, Li T, Tan C, Liu L. Ceramide induces MMP-9 expression through JAK2/STAT3 pathway in airway epithelium. Lipids Health Dis 2020; 19:196. [PMID: 32829707 PMCID: PMC7444274 DOI: 10.1186/s12944-020-01373-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 08/17/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Ceramide, a bioactive lipid, plays an essential role in the development of several pulmonary inflammatory diseases. Matrix metallopeptidase 9 (MMP-9) regulates the synthesis and degradation of extracellular matrix, and is associated with airway remodeling and tissue injury. This study was conducted to investigate the effects and underlying mechanisms of ceramide on MMP-9 expression in airway epithelium. METHODS BEAS-2B cells, normal human bronchial epithelium cell lines, were pretreated with AG490, a selective janus tyrosine kinase 2 (JAK2) inhibitor, or Stattic, a selective signal transducer and activator of transcription 3 (STAT3) inhibitor. The cells were then stimulated with C6-ceramide. The levels of MMP-9 were determined by ELISA and real-time quantitative PCR (RT-qPCR). JAK2, phosphorylated JAK2 (p-JAK2), STAT3, and phosphorylated STAT3 (p-STAT3) expression was examined by Western blotting. BALB/c mice were pretreated with AG490 or Stattic before intratracheally instillated with C6-ceramide. Pathological changes in lung tissues were examined by Hematoxylin and Eosin staining, Periodic-acid Schiff staining, and Masson's trichrome staining. MMP-9, JAK2, p-JAK2, STAT3, and p-STAT3 expression in the lung tissues was examined by Western blotting. RESULTS The expression of MMP-9, p-JAK2 and p-STAT3 in BEAS-2B cells was significantly increased after the treatment of C6-ceramide. Furthermore, the increased expression of MMP-9 induced by C6-ceramide was inhibited by AG490 and Stattic. Similar results were obtained in the lung tissues of C6-ceramide-exposed mice which were treated with AG490 or Stattic. CONCLUSIONS Ceramide could up-regulate MMP-9 expression through the activation of the JAK2/STAT3 pathway in airway epithelium. Targeted modulation of the ceramide signaling pathway may offer a potential therapeutic approach for inhibiting MMP-9 expression. This study points to a potentially novel approach to alleviating airway remodeling in inflammatory airway diseases.
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Affiliation(s)
- Lingling Xuan
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Feifei Han
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Lili Gong
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yali Lv
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Zirui Wan
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - He Liu
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Lulu Ren
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Song Yang
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Wen Zhang
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Ting Li
- Department of Geriatrics, Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Chunting Tan
- Department of Respiratory Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Lihong Liu
- Department of Pharmacy, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.
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64
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Schweitzer KS, Jinawath N, Yonescu R, Ni K, Rush N, Charoensawan V, Bronova I, Berdyshev E, Leach SM, Gillenwater LA, Bowler RP, Pearse DB, Griffin CA, Petrache I. IGSF3 mutation identified in patient with severe COPD alters cell function and motility. JCI Insight 2020; 5:138101. [PMID: 32573489 DOI: 10.1172/jci.insight.138101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/10/2020] [Indexed: 11/17/2022] Open
Abstract
Cigarette smoking (CS) and genetic susceptibility determine the risk for development, progression, and severity of chronic obstructive pulmonary diseases (COPD). We posited that an incidental balanced reciprocal chromosomal translocation was linked to a patient's risk of severe COPD. We determined that 46,XX,t(1;4)(p13.1;q34.3) caused a breakpoint in the immunoglobulin superfamily member 3 (IGSF3) gene, with markedly decreased expression. Examination of COPDGene cohort identified 14 IGSF3 SNPs, of which rs1414272 and rs12066192 were directly and rs6703791 inversely associated with COPD severity, including COPD exacerbations. We confirmed that IGSF3 is a tetraspanin-interacting protein that colocalized with CD9 and integrin B1 in tetraspanin-enriched domains. IGSF3-deficient patient-derived lymphoblastoids exhibited multiple alterations in gene expression, especially in the unfolded protein response and ceramide pathways. IGSF3-deficient lymphoblastoids had high ceramide and sphingosine-1 phosphate but low glycosphingolipids and ganglioside levels, and they were less apoptotic and more adherent, with marked changes in multiple TNFRSF molecules. Similarly, IGSF3 knockdown increased ceramide in lung structural cells, rendering them more adherent, with impaired wound repair and weakened barrier function. These findings suggest that, by maintaining sphingolipid and membrane receptor homeostasis, IGSF3 is required for cell mobility-mediated lung injury repair. IGSF3 deficiency may increase susceptibility to CS-induced lung injury in COPD.
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Affiliation(s)
- Kelly S Schweitzer
- Department of Medicine, National Jewish Health, Denver, Colorado, USA.,Department of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Natini Jinawath
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, and.,Integrative Computational Bioscience Center, Mahidol University, Nakhon Pathom, Thailand
| | - Raluca Yonescu
- Department of Pathology, Division of Molecular Pathology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Kevin Ni
- Department of Medicine, National Jewish Health, Denver, Colorado, USA.,Department of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Natalia Rush
- Department of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Varodom Charoensawan
- Integrative Computational Bioscience Center, Mahidol University, Nakhon Pathom, Thailand.,Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Irina Bronova
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Evgeny Berdyshev
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - Sonia M Leach
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | | | - Russel P Bowler
- Department of Medicine, National Jewish Health, Denver, Colorado, USA
| | - David B Pearse
- Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Constance A Griffin
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, and
| | - Irina Petrache
- Department of Medicine, National Jewish Health, Denver, Colorado, USA.,Department of Medicine, Indiana University, Indianapolis, Indiana, USA.,Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
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65
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Loberto N, Mancini G, Bassi R, Carsana EV, Tamanini A, Pedemonte N, Dechecchi MC, Sonnino S, Aureli M. Sphingolipids and plasma membrane hydrolases in human primary bronchial cells during differentiation and their altered patterns in cystic fibrosis. Glycoconj J 2020; 37:623-633. [PMID: 32666337 PMCID: PMC7501107 DOI: 10.1007/s10719-020-09935-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 06/30/2020] [Accepted: 07/06/2020] [Indexed: 01/26/2023]
Abstract
Human primary bronchial epithelial cells differentiated in vitro represent a valuable tool to study lung diseases such as cystic fibrosis (CF), an inherited disorder caused by mutations in the gene coding for the Cystic Fibrosis Transmembrane Conductance Regulator. In CF, sphingolipids, a ubiquitous class of bioactive lipids mainly associated with the outer layer of the plasma membrane, seem to play a crucial role in the establishment of the severe lung complications. Nevertheless, no information on the involvement of sphingolipids and their metabolism in the differentiation of primary bronchial epithelial cells are available so far. Here we show that ceramide and globotriaosylceramide increased during cell differentiation, whereas glucosylceramide and gangliosides content decreased. In addition, we found that apical plasma membrane of differentiated bronchial cells is characterized by a higher content of sphingolipids in comparison to the other cell membranes and that activity of sphingolipids catabolic enzymes associated with this membrane results altered with respect to the total cell activities. In particular, the apical membrane of CF cells was characterized by high levels of ceramide and glucosylceramide, known to have proinflammatory activity. On this basis, our data further support the role of sphingolipids in the onset of CF lung pathology.
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Affiliation(s)
- Nicoletta Loberto
- Dip. Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, LITA, Via Fratelli Cervi 93, Segrate, Milano, 20090, Italy
| | - Giulia Mancini
- Dip. Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, LITA, Via Fratelli Cervi 93, Segrate, Milano, 20090, Italy
| | - Rosaria Bassi
- Dip. Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, LITA, Via Fratelli Cervi 93, Segrate, Milano, 20090, Italy
| | - Emma Veronica Carsana
- Dip. Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, LITA, Via Fratelli Cervi 93, Segrate, Milano, 20090, Italy
| | - Anna Tamanini
- Section of Molecular Pathology, Department of Pathology and Diagnostics, University Hospital of Verona, 37126, Verona, Italy
| | | | - Maria Cristina Dechecchi
- Section of Clinical Biochemistry, Department of Neurosciences, Biomedicine and Movement, University of Verona, 37134, Verona, Italy
| | - Sandro Sonnino
- Dip. Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, LITA, Via Fratelli Cervi 93, Segrate, Milano, 20090, Italy
| | - Massimo Aureli
- Dip. Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, LITA, Via Fratelli Cervi 93, Segrate, Milano, 20090, Italy.
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66
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Impact of Local High Doses of Radiation by Neutron Activated Mn Dioxide Powder in Rat Lungs: Protracted Pathologic Damage Initiated by Internal Exposure. Biomedicines 2020; 8:biomedicines8060171. [PMID: 32586004 PMCID: PMC7345208 DOI: 10.3390/biomedicines8060171] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 06/17/2020] [Accepted: 06/21/2020] [Indexed: 11/24/2022] Open
Abstract
Internal radiation exposure from neutron-induced radioisotopes environmentally activated following atomic bombing or nuclear accidents should be considered for a complete picture of pathologic effects on survivors. Inhaled hot particles expose neighboring tissues to locally ultra-high doses of β-rays and can cause pathologic damage. 55MnO2 powder was activated by a nuclear reactor to make 56MnO2 which emits β-rays. Internal exposures were compared with external γ-rays. Male Wistar rats were administered activated powder by inhalation. Lung samples were observed by histological staining at six hours, three days, 14 days, two months, six months and eight months after the exposure. Synchrotron radiation—X-ray fluorescence—X-ray absorption near-edge structure (SR–XRF–XANES) was utilized for the chemical analysis of the activated 56Mn embedded in lung tissues. 56Mn beta energy spectrum around the particles was calculated to assess the local dose rate and accumulated dose. Hot particles located in the bronchiole and in damaged alveolar tissue were identified as accumulations of Mn and iron. Histological changes showed evidence of emphysema, hemorrhage and severe inflammation from six hours through eight months. Apoptosis was observed in the bronchiole epithelium. Our study shows early event damage from the locally ultra-high internal dose leads to pathogenesis. The trigger of emphysema and hemorrhage was likely early event damage to blood vessels integral to alveolar walls.
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67
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Garrido CM, Henkels KM, Rehl KM, Liang H, Zhou Y, Gutterman JU, Cho KJ. Avicin G is a potent sphingomyelinase inhibitor and blocks oncogenic K- and H-Ras signaling. Sci Rep 2020; 10:9120. [PMID: 32499517 PMCID: PMC7272413 DOI: 10.1038/s41598-020-65882-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 05/05/2020] [Indexed: 12/23/2022] Open
Abstract
K-Ras must interact primarily with the plasma membrane (PM) for its biological activity. Therefore, disrupting K-Ras PM interaction is a tractable approach to block oncogenic K-Ras activity. Here, we found that avicin G, a family of natural plant-derived triterpenoid saponins from Acacia victoriae, mislocalizes K-Ras from the PM and disrupts PM spatial organization of oncogenic K-Ras and H-Ras by depleting phosphatidylserine (PtdSer) and cholesterol contents, respectively, at the inner PM leaflet. Avicin G also inhibits oncogenic K- and H-Ras signal output and the growth of K-Ras-addicted pancreatic and non-small cell lung cancer cells. We further identified that avicin G perturbs lysosomal activity, and disrupts cellular localization and activity of neutral and acid sphingomyelinases (SMases), resulting in elevated cellular sphingomyelin (SM) levels and altered SM distribution. Moreover, we show that neutral SMase inhibitors disrupt the PM localization of K-Ras and PtdSer and oncogenic K-Ras signaling. In sum, this study identifies avicin G as a new potent anti-Ras inhibitor, and suggests that neutral SMase can be a tractable target for developing anti-K-Ras therapeutics.
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Affiliation(s)
- Christian M Garrido
- Department of Biochemistry and Molecular Biology, School of Boonshoft Medical School, Wright State University, Dayton, OH, 45435, United States
| | - Karen M Henkels
- Department of Biochemistry and Molecular Biology, School of Boonshoft Medical School, Wright State University, Dayton, OH, 45435, United States
| | - Kristen M Rehl
- Department of Biochemistry and Molecular Biology, School of Boonshoft Medical School, Wright State University, Dayton, OH, 45435, United States
| | - Hong Liang
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, 77030, United States
| | - Yong Zhou
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, 77030, United States
| | - Jordan U Gutterman
- Department of Systems Biology, The University of Texas M. D. Anderson Cancer Center, Houston, TX, 77030, United States
| | - Kwang-Jin Cho
- Department of Biochemistry and Molecular Biology, School of Boonshoft Medical School, Wright State University, Dayton, OH, 45435, United States.
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68
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De Cunto G, Cavarra E, Bartalesi B, Lucattelli M, Lungarella G. Innate Immunity and Cell Surface Receptors in the Pathogenesis of COPD: Insights from Mouse Smoking Models. Int J Chron Obstruct Pulmon Dis 2020; 15:1143-1154. [PMID: 32547002 PMCID: PMC7246326 DOI: 10.2147/copd.s246219] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 05/03/2020] [Indexed: 12/23/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is mainly associated with smoking habit. Inflammation is the major initiating process whereby neutrophils and monocytes are attracted into the lung microenvironment by external stimuli present in tobacco leaves and in cigarette smoke, which promote chemotaxis, adhesion, phagocytosis, release of superoxide anions and enzyme granule contents. A minority of smokers develops COPD and different molecular factors, which contribute to the onset of the disease, have been put forward. After many years of research, the pathogenesis of COPD is still an object of debate. In vivo models of cigarette smoke-induced COPD may help to unravel cellular and molecular mechanisms underlying the pathogenesis of COPD. The mouse represents the most favored animal choice with regard to the study of immune mechanisms due to its genetic and physiological similarities to humans, the availability of a large variability of inbred strains, the presence in the species of several genetic disorders analogous to those in man, and finally on the possibility to create models “made-to-measure” by genetic manipulation. The review outlines the different response of mouse strains to cigarette smoke used in COPD studies while retaining a strong focus on their relatability to human patients. These studies reveal the importance of innate immunity and cell surface receptors in the pathogenesis of pulmonary injury induced by cigarette smoking. They further advance the way in which we use wild type or genetically manipulated strains to improve our overall understanding of a multifaceted disease such as COPD. The structural and functional features, which have been found in the different strains of mice after chronic exposure to cigarette smoke, can be used in preclinical studies to develop effective new therapeutic agents for the different phenotypes in human COPD.
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Affiliation(s)
- Giovanna De Cunto
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Eleonora Cavarra
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Barbara Bartalesi
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Monica Lucattelli
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Giuseppe Lungarella
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
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69
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Cao D, Mikosz AM, Ringsby AJ, Anderson KC, Beatman EL, Koike K, Petrache I. MicroRNA-126-3p Inhibits Angiogenic Function of Human Lung Microvascular Endothelial Cells via LAT1 (L-Type Amino Acid Transporter 1)-Mediated mTOR (Mammalian Target of Rapamycin) Signaling. Arterioscler Thromb Vasc Biol 2020; 40:1195-1206. [PMID: 32212853 PMCID: PMC7370836 DOI: 10.1161/atvbaha.119.313800] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/13/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE MicroRNA-126-3p (miR-126) is required for angiogenesis during organismal development or the repair of injured arterial vasculature. The role of miR-126 in lung microvascular endothelial cells, which are essential for gas exchange and for lung injury repair and regeneration, remains poorly understood. Considering the significant heterogeneity of endothelial cells from different vascular beds, we aimed to determine the role of miR-126 in regulating lung microvascular endothelial cell function and to elucidate its downstream signaling pathways. Approach and Results: Overexpression and knockdown of miR-126 in primary human lung microvascular endothelial cells (HLMVEC) were achieved via transfections of miR-126 mimics and antisense inhibitors. Increasing miR-126 levels in HLMVEC reduced cell proliferation, weakened tube formation, and increased cell apoptosis, whereas decreased miR-126 levels stimulated cell proliferation and tube formation. Whole-genome RNA sequencing revealed that miR-126 was associated with an antiangiogenic and proapoptotic transcriptomic profile. Using validation assays and knockdown approaches, we identified that the effect of miR-126 on HLMVEC angiogenesis was mediated by the LAT1 (L-type amino acid transporter 1), via regulation of mTOR (mammalian target of rapamycin) signaling. Furthermore, downregulation of miR-126 in HLMVEC inhibited cell apoptosis and improved endothelial tube formation during exposure to environmental insults such as cigarette smoke. CONCLUSIONS miR-126 inhibits HLMVEC angiogenic function by targeting the LAT1-mTOR signaling axis, suggesting that miR-126 inhibition may be useful for conditions associated with microvascular loss, whereas miR-126 augmentation may help control unwanted microvascular angiogenesis.
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Affiliation(s)
- Danting Cao
- Department of Pharmacology Graduate Training Program, University of Colorado Anschutz Medical Campus, Aurora, CO
- Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, CO
| | - Andrew M. Mikosz
- Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, CO
| | - Alexandra J. Ringsby
- Department of Chemical and Biomolecular Engineering, University of California Berkeley, Berkeley, CA
| | - Kelsey C. Anderson
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO
| | - Erica L. Beatman
- Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, CO
| | - Kengo Koike
- Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, CO
- Division of Respiratory Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - Irina Petrache
- Department of Pharmacology Graduate Training Program, University of Colorado Anschutz Medical Campus, Aurora, CO
- Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, Denver, CO
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Tran HB, Macowan MG, Abdo A, Donnelley M, Parsons D, Hodge S. Enhanced inflammasome activation and reduced sphingosine-1 phosphate S1P signalling in a respiratory mucoobstructive disease model. JOURNAL OF INFLAMMATION-LONDON 2020; 17:16. [PMID: 32336954 PMCID: PMC7175514 DOI: 10.1186/s12950-020-00248-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 04/14/2020] [Indexed: 12/28/2022]
Abstract
Background Inflammasomes and sphingosine-1-phosphate (S1P) signalling are increasingly subject to intensive research in human diseases. We hypothesize that in respiratory muco-obstructive diseases, mucus obstruction enhances NLRP3 inflammasome activation and dysregulated S1P signalling. Methods Lung tissues from mice overexpressing the beta-unit of the epithelial sodium channel (βENaC) and their littermate controls were examined by histology, immunofluorescence and confocal microscopy, followed by ImageJ quantitative analysis. Results Lower airways in βENaC mice showed patchy patterns of mucus obstruction and neutrophil-dominant infiltrations. In contrast to a ubiquitous distribution of TNFα specks, significantly (p < 0.05) increased specks of bronchiolar NLRP3, IL-1β, and IgG in the βENaC mouse lungs were localized to the vicinity of mucus obstruction sites. Bright Spinster homologue 2 (SPNS2) at the epithelial apex and positive correlation with sphingosine kinase 1 (SPHK1) (R2 = 0.640; p < 0.001) supported the normal bronchial epithelium as an active generator of extracellular S1P. SPNS2 in βENaC mice was sharply reduced (38%, p < 0.05) and lost apical localization at sites of mucus obstruction. A significant (34%; p < 0.01) decrease in epithelial SPHK2 was also noted at mucus obstruction sites. Conclusion These results support that mucus obstruction may enhance NLRP3 inflammasome activation and dysregulated S1P signaling.
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Affiliation(s)
- Hai B Tran
- 1Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,2Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | - Matthew G Macowan
- 1Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,2Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | - Adrian Abdo
- 2Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | - Martin Donnelley
- 2Adelaide Medical School, University of Adelaide, Adelaide, Australia.,3Respiratory and Sleep Medicine, Women's and Children's Hospital, Adelaide, Australia.,4Robinson Research Institute, University of Adelaide, Adelaide, Australia
| | - David Parsons
- 2Adelaide Medical School, University of Adelaide, Adelaide, Australia.,3Respiratory and Sleep Medicine, Women's and Children's Hospital, Adelaide, Australia.,4Robinson Research Institute, University of Adelaide, Adelaide, Australia
| | - Sandra Hodge
- 1Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,2Adelaide Medical School, University of Adelaide, Adelaide, Australia
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71
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Henkel M, Partyka J, Gregory AD, Forno E, Cho MH, Eddens T, Tout AR, Salamacha N, Horne W, Rao KS, Wu Y, Alcorn JF, Kostka D, Hirsch R, Celedón JC, Shapiro SD, Kolls JK, Campfield BT. FSTL-1 Attenuation Causes Spontaneous Smoke-Resistant Pulmonary Emphysema. Am J Respir Crit Care Med 2020; 201:934-945. [PMID: 31834999 PMCID: PMC7159415 DOI: 10.1164/rccm.201905-0973oc] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022] Open
Abstract
Rationale: The role of FSTL-1 (follistatin-like 1) in lung homeostasis is unknown.Objectives: We aimed to define the impact of FSTL-1 attenuation on lung structure and function and to identify FSTL-1-regulated transcriptional pathways in the lung. Further, we aimed to analyze the association of FSTL-1 SNPs with lung disease.Methods: FSTL-1 hypomorphic (FSTL-1 Hypo) mice underwent lung morphometry, pulmonary function testing, and micro-computed tomography. Fstl1 expression was determined in wild-type lung cell populations from three independent research groups. RNA sequencing of wild-type and FSTL-1 Hypo mice identified FSTL-1-regulated gene expression, followed by validation and mechanistic in vitro examination. FSTL1 SNP analysis was performed in the COPDGene (Genetic Epidemiology of Chronic Obstructive Pulmonary Disease) cohort.Measurements and Main Results: FSTL-1 Hypo mice developed spontaneous emphysema, independent of smoke exposure. Fstl1 is highly expressed in the lung by mesenchymal and endothelial cells but not immune cells. RNA sequencing of whole lung identified 33 FSTL-1-regulated genes, including Nr4a1, an orphan nuclear hormone receptor that negatively regulates NF-κB (nuclear factor-κB) signaling. In vitro, recombinant FSTL-1 treatment of macrophages attenuated NF-κB p65 phosphorylation in an Nr4a1-dependent manner. Within the COPDGene cohort, several SNPs in the FSTL1 region corresponded to chronic obstructive pulmonary disease and lung function.Conclusions: This work identifies a novel role for FSTL-1 protecting against emphysema development independent of smoke exposure. This FSTL-1-deficient emphysema implicates regulation of immune tolerance in lung macrophages through Nr4a1. Further study of the mechanisms involving FSTL-1 in lung homeostasis, immune regulation, and NF-κB signaling may provide additional insight into the pathophysiology of emphysema and inflammatory lung diseases.
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Affiliation(s)
- Matthew Henkel
- Division of Pediatric Infectious Diseases
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Jessica Partyka
- Division of Pediatric Infectious Diseases
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Alyssa D. Gregory
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Erick Forno
- Division of Pediatric Pulmonary Medicine
- Richard K. Mellon Institute for Pediatric Research, and
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Michael H. Cho
- Channing Division of Network Medicine and
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Boston, Massachusetts; and
| | - Taylor Eddens
- Division of Pediatric Infectious Diseases
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | | | - Nathan Salamacha
- Department of Developmental Biology
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - William Horne
- Richard K. Mellon Institute for Pediatric Research, and
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | | | - Yijen Wu
- Department of Developmental Biology
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - John F. Alcorn
- Division of Pediatric Pulmonary Medicine
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Dennis Kostka
- Department of Developmental Biology
- Department of Computational and Systems Biology, and
- Center for Evolutionary Biology and Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Raphael Hirsch
- Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa
| | - Juan C. Celedón
- Division of Pediatric Pulmonary Medicine
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Steven D. Shapiro
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine
| | - Jay K. Kolls
- Richard K. Mellon Institute for Pediatric Research, and
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Brian T. Campfield
- Division of Pediatric Infectious Diseases
- Richard K. Mellon Institute for Pediatric Research, and
- University of Pittsburgh Medical Center Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania
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Lai YT, Chao HW, Lai ACY, Lin SH, Chang YJ, Huang YS. CPEB2-activated PDGFRα mRNA translation contributes to myofibroblast proliferation and pulmonary alveologenesis. J Biomed Sci 2020; 27:52. [PMID: 32295602 PMCID: PMC7160907 DOI: 10.1186/s12929-020-00643-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 03/26/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Alveologenesis is the final stage of lung development to form air-exchanging units between alveoli and blood vessels. Genetic susceptibility or hyperoxic stress to perturb this complicated process can cause abnormal enlargement of alveoli and lead to bronchopulmonary dysplasia (BPD)-associated emphysema. Platelet-derived growth factor receptor α (PDGFRα) signaling is crucial for alveolar myofibroblast (MYF) proliferation and its deficiency is associated with risk of BPD, but posttranscriptional mechanisms regulating PDGFRα synthesis during lung development remain largely unexplored. Cytoplasmic polyadenylation element-binding protein 2 (CPEB2) is a sequence-specific RNA-binding protein and translational regulator. Because CPEB2-knockout (KO) mice showed emphysematous phenotypes, we investigated how CPEB2-controlled translation affects pulmonary development and function. METHODS Respiratory and pulmonary functions were measured by whole-body and invasive plethysmography. Histological staining and immunohistochemistry were used to analyze morphology, proliferation, apoptosis and cell densities from postnatal to adult lungs. Western blotting, RNA-immunoprecipitation, reporter assay, primary MYF culture and ectopic expression rescue were performed to demonstrate the role of CPEB2 in PDGFRα mRNA translation and MYF proliferation. RESULTS Adult CPEB2-KO mice showed emphysema-like dysfunction. The alveolar structure in CPEB2-deficient lungs appeared normal at birth but became simplified through the alveolar stage of lung development. In CPEB2-null mice, we found reduced proliferation of MYF progenitors during alveolarization, abnormal deposition of elastin and failure of alveolar septum formation, thereby leading to enlarged pulmonary alveoli. We identified that CPEB2 promoted PDGFRα mRNA translation in MYF progenitors and this positive regulation could be disrupted by H2O2, a hyperoxia-mimetic treatment. Moreover, decreased proliferating ability in KO MYFs due to insufficient PDGFRα expression was rescued by ectopic expression of CPEB2, suggesting an important role of CPEB2 in upregulating PDGFRα signaling for pulmonary alveologenesis. CONCLUSIONS CPEB2-controlled translation, in part through promoting PDGFRα expression, is indispensable for lung development and function. Since defective pulmonary PDGFR signaling is a key feature of human BPD, CPEB2 may be a risk factor for BPD.
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Affiliation(s)
- Yen-Ting Lai
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd, Taipei, 11529, Taiwan
| | - Hsu-Wen Chao
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Alan Chuan-Ying Lai
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd, Taipei, 11529, Taiwan
| | - Shu-Hui Lin
- Department of Physiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
| | - Ya-Jen Chang
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd, Taipei, 11529, Taiwan.
| | - Yi-Shuian Huang
- Institute of Biomedical Sciences, Academia Sinica, 128 Sec. 2, Academia Rd, Taipei, 11529, Taiwan.
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Leonetti D, Estéphan H, Ripoche N, Dubois N, Aguesse A, Gouard S, Brossard L, Chiavassa S, Corre I, Pecqueur C, Neunlist M, Hadchity E, Gaugler MH, Mahé MM, Paris F. Secretion of Acid Sphingomyelinase and Ceramide by Endothelial Cells Contributes to Radiation-Induced Intestinal Toxicity. Cancer Res 2020; 80:2651-2662. [PMID: 32291318 DOI: 10.1158/0008-5472.can-19-1527] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 12/16/2019] [Accepted: 04/08/2020] [Indexed: 11/16/2022]
Abstract
Ceramide-induced endothelial cell apoptosis boosts intestinal stem cell radiosensitivity. However, the molecular connection between these two cellular compartments has not been clearly elucidated. Here we report that ceramide and its related enzyme acid sphingomyelinase (ASM) are secreted by irradiated endothelial cells and act as bystander factors to enhance the radiotoxicity of intestinal epithelium. Ceramide and the two isoforms of ASM were acutely secreted in the blood serum of wild-type mice after 15 Gy radiation dose, inducing a gastrointestinal syndrome. Interestingly, serum ceramide was not enhanced in irradiated ASMKO mice, which are unable to develop intestinal failure injury. Because ASM/ceramide were secreted by primary endothelial cells, their contribution was studied in intestinal epithelium dysfunction using coculture of primary endothelial cells and intestinal T84 cells. Adding exogenous ASM or ceramide enhanced epithelial cell growth arrest and death. Conversely, blocking their secretion by endothelial cells using genetic, pharmacologic, or immunologic approaches abolished intestinal T84 cell radiosensitivity. Use of enteroid models revealed ASM and ceramide-mediated deleterious mode-of-action: when ceramide reduced the number of intestinal crypt-forming enteroids without affecting their structure, ASM induced a significant decrease of enteroid growth without affecting their number. Identification of specific and different roles for ceramide and ASM secreted by irradiated endothelial cells opens new perspectives in the understanding of intestinal epithelial dysfunction after radiation and defines a new class of potential therapeutic radiomitigators. SIGNIFICANCE: This study identifies secreted ASM and ceramide as paracrine factors enhancing intestinal epithelial dysfunction, revealing a previously unknown class of mediators of radiosensitivity.
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Affiliation(s)
| | - Hala Estéphan
- Université de Nantes, INSERM, CNRS, CRCINA, Nantes, France.,Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadath, Lebanon
| | | | - Nolwenn Dubois
- Université de Nantes, INSERM, CNRS, CRCINA, Nantes, France.,ICO, Saint-Herblain, France
| | - Audrey Aguesse
- Université de Nantes, INRA UMR 1280 Physiologie des Adaptations Nutritionnelles, Nantes, France.,CRNHO, West Human Nutrition Research Center, Nantes, France
| | | | - Lisa Brossard
- The Enteric Nervous System in Gut and Brain Disorders, INSERM, Université de Nantes, Institut des Maladies de l'Appareil Digestif, Nantes, France
| | | | - Isabelle Corre
- Université de Nantes, INSERM, CNRS, CRCINA, Nantes, France
| | | | - Michel Neunlist
- The Enteric Nervous System in Gut and Brain Disorders, INSERM, Université de Nantes, Institut des Maladies de l'Appareil Digestif, Nantes, France
| | - Elie Hadchity
- Anti-Tumor Therapeutic Targeting Laboratory, Faculty of Sciences, Lebanese University, Hadath, Lebanon
| | | | - Maxime M Mahé
- The Enteric Nervous System in Gut and Brain Disorders, INSERM, Université de Nantes, Institut des Maladies de l'Appareil Digestif, Nantes, France
| | - François Paris
- Université de Nantes, INSERM, CNRS, CRCINA, Nantes, France. .,ICO, Saint-Herblain, France
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Cellular signalling pathways mediating the pathogenesis of chronic inflammatory respiratory diseases: an update. Inflammopharmacology 2020; 28:795-817. [PMID: 32189104 DOI: 10.1007/s10787-020-00698-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 03/02/2020] [Indexed: 02/06/2023]
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75
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Tong X, Chaudhry Z, Lee CC, Bone RN, Kanojia S, Maddatu J, Sohn P, Weaver SA, Robertson MA, Petrache I, Evans-Molina C, Kono T. Cigarette smoke exposure impairs β-cell function through activation of oxidative stress and ceramide accumulation. Mol Metab 2020; 37:100975. [PMID: 32283079 PMCID: PMC7170997 DOI: 10.1016/j.molmet.2020.100975] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 03/03/2020] [Accepted: 03/06/2020] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES Epidemiological studies indicate that first- and second-hand cigarette smoke (CS) exposure are important risk factors for the development of type 2 diabetes (T2D). Additionally, elevated diabetes risk has been reported to occur within a short period of time after smoking cessation, and health risks associated with smoking are increased when combined with obesity. At present, the mechanisms underlying these associations remain incompletely understood. The objective of this study was to test the impact of CS exposure on pancreatic β-cell function using rodent and in vitro models. METHODS Beginning at 8 weeks of age, C57BL/6 J mice were concurrently fed a high-fat diet (HFD) and exposed to CS for 11 weeks, followed by an additional 11 weeks of smoking cessation with continued HFD. Glucose tolerance testing was performed during CS exposure and during the cessation period. Cultured INS-1 β-cells and primary islets were exposed ex vivo to CS extract (CSE), and β-cell function and viability were tested. Since CS increases ceramide accumulation in the lung and these bioactive sphingolipids have been implicated in pancreatic β-cell dysfunction in diabetes, islet and β-cell sphingolipid levels were measured in islets from CS-exposed mice and in CSE-treated islets and INS-1 cells using liquid chromatography-tandem mass spectrometry. RESULTS Compared to HFD-fed, ambient air-exposed mice, HFD-fed and CS-exposed mice had reduced weight gain and better glucose tolerance during the active smoking period. Following smoking cessation, CS-mice exhibited rapid weight gain and had accelerated worsening of their glucose tolerance. CS-exposed mice had higher serum proinsulin/insulin ratios, indicative of β-cell dysfunction, significantly lower β-cell mass (p = 0.017), reduced β-cell proliferation (p = 0.006), and increased islet ceramide content compared to non-smoking control mice. Ex vivo exposure of isolated islets to CSE was sufficient to increase islet ceramide levels, which was correlated with reduced insulin gene expression and glucose-stimulated insulin secretion, and increased β-cell oxidative and endoplasmic reticulum (ER) stress. Treatment with the antioxidant N-acetylcysteine markedly attenuated the effects of CSE on ceramide levels, restored β-cell function and survival, and increased cyclin D2 expression, while also reducing activation of β-cell ER and oxidative stress. CONCLUSIONS Our results indicate that CS exposure leads to impaired insulin production, processing, secretion and reduced β-cell viability and proliferation. These effects were linked to increased β-cell oxidative and ER stress and ceramide accumulation. Mice fed HFD continued to experience detrimental effects of CS exposure even during smoking cessation. Elucidation of the mechanisms by which CS exposure impairs β-cell function in synergy with obesity will help design therapeutic and preventive interventions for both active and former smokers.
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Affiliation(s)
- Xin Tong
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA
| | - Zunaira Chaudhry
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Chih-Chun Lee
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Robert N. Bone
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Sukrati Kanojia
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Judith Maddatu
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Paul Sohn
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA,Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Staci A. Weaver
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA,Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | | | - Irina Petrache
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, National Jewish Health, Denver, CO, USA,Corresponding author. 1400 Jackson St, Denver, CO, 80806, USA. Tel.: +303 270 2080.
| | - Carmella Evans-Molina
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA,Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA,Department of Cellular and Integrative Physiology, Indiana University School of Medicine, Indianapolis, IN, USA,Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA,Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN, USA,Corresponding author. Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.
| | - Tatsuyoshi Kono
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA,Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA,Corresponding author. Indiana University School of Medicine, 635 Barnhill Drive, MS 2031A, Indianapolis, IN, 46202, USA. Tel.: +317 274 4145; fax 317 274 4107.
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Potential therapeutic target for aging and age-related neurodegenerative diseases: the role of acid sphingomyelinase. Exp Mol Med 2020; 52:380-389. [PMID: 32203096 PMCID: PMC7156489 DOI: 10.1038/s12276-020-0399-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/07/2020] [Accepted: 01/15/2020] [Indexed: 12/21/2022] Open
Abstract
Aging, which is associated with age-related changes in physiological processes, is the most significant risk factor for the development and progression of neurodegenerative diseases, including Alzheimer's disease and Parkinson's disease. Accumulating evidence has indicated that sphingolipids are significant regulators that are associated with pathogenesis in aging and several age-related neurodegenerative diseases. In particular, abnormal levels of acid sphingomyelinase (ASM), one of the significant sphingolipid-metabolizing enzymes, have been found in the blood and some tissues under various neuropathological conditions. Moreover, recent studies have reported the importance of ASM as a critical mediator that contributes to pathologies in aging and age-related neurodegenerative diseases. In this review, we describe the pathophysiological processes that are regulated by ASM, focusing on the age-related neurodegenerative environment. Furthermore, we discuss novel insights into how new therapeutics targeting ASM may potentially lead to effective strategies to combat aging and age-related neurodegenerative diseases.
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77
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Gredic M, Blanco I, Kovacs G, Helyes Z, Ferdinandy P, Olschewski H, Barberà JA, Weissmann N. Pulmonary hypertension in chronic obstructive pulmonary disease. Br J Pharmacol 2020; 178:132-151. [PMID: 31976545 DOI: 10.1111/bph.14979] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 12/29/2019] [Accepted: 01/06/2020] [Indexed: 12/12/2022] Open
Abstract
Even mild pulmonary hypertension (PH) is associated with increased mortality and morbidity in patients with chronic obstructive pulmonary disease (COPD). However, the underlying mechanisms remain elusive; therefore, specific and efficient treatment options are not available. Therapeutic approaches tested in the clinical setting, including long-term oxygen administration and systemic vasodilators, gave disappointing results and might be only beneficial for specific subgroups of patients. Preclinical studies identified several therapeutic approaches for the treatment of PH in COPD. Further research should provide deeper insight into the complex pathophysiological mechanisms driving vascular alterations in COPD, especially as such vascular (molecular) alterations have been previously suggested to affect COPD development. This review summarizes the current understanding of the pathophysiology of PH in COPD and gives an overview of the available treatment options and recent advances in preclinical studies. LINKED ARTICLES: This article is part of a themed issue on Risk factors, comorbidities, and comedications in cardioprotection. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.1/issuetoc.
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Affiliation(s)
- Marija Gredic
- Cardio-Pulmonary Institute, University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Isabel Blanco
- Department of Pulmonary Medicine, Hospital Clínic-Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.,Biomedical Research Networking Center on Respiratory Diseases (CIBERES), Madrid, Spain
| | - Gabor Kovacs
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria.,Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School & János Szentágothai Research Centre, University of Pécs, Pécs, Hungary.,PharmInVivo Ltd, Pécs, Hungary
| | - Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary.,Pharmahungary Group, Szeged, Hungary
| | - Horst Olschewski
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria.,Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Joan Albert Barberà
- Department of Pulmonary Medicine, Hospital Clínic-Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain.,Biomedical Research Networking Center on Respiratory Diseases (CIBERES), Madrid, Spain
| | - Norbert Weissmann
- Cardio-Pulmonary Institute, University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
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78
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Gupta G, Baumlin N, Poon J, Ahmed B, Chiang YP, Railwah C, Kim MD, Rivas M, Goldenberg H, Elgamal Z, Salathe M, Panwala AA, Dabo A, Huan C, Foronjy R, Jiang XC, Wadgaonkar R, Geraghty P. Airway Resistance Caused by Sphingomyelin Synthase 2 Insufficiency in Response to Cigarette Smoke. Am J Respir Cell Mol Biol 2020; 62:342-353. [PMID: 31517509 PMCID: PMC7055695 DOI: 10.1165/rcmb.2019-0133oc] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 09/12/2019] [Indexed: 12/15/2022] Open
Abstract
Sphingomyelin synthase is responsible for the production of sphingomyelin (SGM), the second most abundant phospholipid in mammalian plasma, from ceramide, a major sphingolipid. Knowledge of the effects of cigarette smoke on SGM production is limited. In the present study, we examined the effect of chronic cigarette smoke on sphingomyelin synthase (SGMS) activity and evaluated how the deficiency of Sgms2, one of the two isoforms of mammalian SGMS, impacts pulmonary function. Sgms2-knockout and wild-type control mice were exposed to cigarette smoke for 6 months, and pulmonary function testing was performed. SGMS2-dependent signaling was investigated in these mice and in human monocyte-derived macrophages of nonsmokers and human bronchial epithelial (HBE) cells isolated from healthy nonsmokers and subjects with chronic obstructive pulmonary disease (COPD). Chronic cigarette smoke reduces SGMS activity and Sgms2 gene expression in mouse lungs. Sgms2-deficient mice exhibited enhanced airway and tissue resistance after chronic cigarette smoke exposure, but had similar degrees of emphysema, compared with smoke-exposed wild-type mice. Sgms2-/- mice had greater AKT phosphorylation, peribronchial collagen deposition, and protease activity in their lungs after smoke inhalation. Similarly, we identified reduced SGMS2 expression and enhanced phosphorylation of AKT and protease production in HBE cells isolated from subjects with COPD. Selective inhibition of AKT activity or overexpression of SGMS2 reduced the production of several matrix metalloproteinases in HBE cells and monocyte-derived macrophages. Our study demonstrates that smoke-regulated Sgms2 gene expression influences key COPD features in mice, including airway resistance, AKT signaling, and protease production.
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Affiliation(s)
- Gayatri Gupta
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Nathalie Baumlin
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas; and
| | - Justin Poon
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Begum Ahmed
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | | | | | - Michael D. Kim
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas; and
| | - Melissa Rivas
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Hannah Goldenberg
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Ziyad Elgamal
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Matthias Salathe
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas; and
| | - Apurav A. Panwala
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
| | - Abdoulaye Dabo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
- Department of Cell Biology, and
| | - Chongmin Huan
- Department of Cell Biology, and
- Department of Surgery, State University of New York Downstate Medical Center, Brooklyn, New York
| | - Robert Foronjy
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
- Department of Cell Biology, and
| | - Xian-Cheng Jiang
- Department of Cell Biology, and
- VA Medical Center, Brooklyn, New York
| | - Raj Wadgaonkar
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
- Department of Cell Biology, and
- VA Medical Center, Brooklyn, New York
| | - Patrick Geraghty
- Division of Pulmonary and Critical Care Medicine, Department of Medicine
- Department of Cell Biology, and
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Mallampalli RK, Li X, Jang JH, Kaminski T, Hoji A, Coon T, Chandra D, Welty S, Teng Y, Sembrat J, Rojas M, Zhao Y, Lafyatis R, Zou C, Sciurba F, Sundd P, Lan L, Nyunoya T. Cigarette smoke exposure enhances transforming acidic coiled-coil-containing protein 2 turnover and thereby promotes emphysema. JCI Insight 2020; 5:125895. [PMID: 31996486 PMCID: PMC7098723 DOI: 10.1172/jci.insight.125895] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 12/18/2019] [Indexed: 01/09/2023] Open
Abstract
Our integrative genomic and functional analysis identified transforming acidic coiled-coil-containing protein 2 (TACC2) as a chronic obstructive pulmonary disease (COPD) candidate gene. Here, we found that smokers with COPD exhibit a marked decrease in lung TACC2 protein levels relative to smokers without COPD. Single cell RNA sequencing reveals that TACC2 is expressed primarily in lung epithelial cells in normal human lungs. Furthermore, suppression of TACC2 expression impairs the efficiency of homologous recombination repair and augments spontaneous and cigarette smoke extract-induced (CSE-induced) DNA damage and cytotoxicity in immortalized human bronchial epithelial cells. By contrast, enforced expression of TACC2 attenuates the CSE effects. We also found that CSE enhances TACC2 degradation via the ubiquitin-proteasome system mediated by the ubiquitin E3 ligase subunit, F box L7. Furthermore, cellularly expressed TACC2 proteins harboring naturally occurring mutations exhibited altered protein lifespan coupled with modified DNA damage repair and cytotoxic responses. CS triggers emphysematous changes accompanied by accumulated DNA damage, apoptosis of alveolar epithelia, and lung inflammation in Tacc2-/- compared with Tacc2+/+ mice. Our results suggest that CS destabilizes TACC2 protein in lung epithelia by the ubiquitin proteasome system, leading to subsequent DNA damage, cytotoxicity, and emphysema.
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Affiliation(s)
- Rama K. Mallampalli
- Department of Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Xiuying Li
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Medical Specialty Service Line, Veterans Affairs Pittsburgh Healthcare System, Pittsburg, Pennsylvania, USA
| | - Jun-Ho Jang
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Tomasz Kaminski
- Vascular Medical Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Aki Hoji
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Tiffany Coon
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Divay Chandra
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Starr Welty
- Department of Microbiology & Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- UMPC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
| | - Yaqun Teng
- School of Medicine, Tsinghua University, No. 1 Tsinghua Yuan, Beijing, China
| | - John Sembrat
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mauricio Rojas
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Yutong Zhao
- Department of Physiology and Cell Biology, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Robert Lafyatis
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Chunbin Zou
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Medical Specialty Service Line, Veterans Affairs Pittsburgh Healthcare System, Pittsburg, Pennsylvania, USA
| | - Frank Sciurba
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Prithu Sundd
- Vascular Medical Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Li Lan
- Department of Radiation Oncology, Massachusetts General Hospital Cancer Center, Harvard Medical School, Charlestown, Massachusetts, USA
| | - Toru Nyunoya
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Medical Specialty Service Line, Veterans Affairs Pittsburgh Healthcare System, Pittsburg, Pennsylvania, USA
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80
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Presa N, Gomez-Larrauri A, Dominguez-Herrera A, Trueba M, Gomez-Muñoz A. Novel signaling aspects of ceramide 1-phosphate. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158630. [PMID: 31958571 DOI: 10.1016/j.bbalip.2020.158630] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/09/2020] [Accepted: 01/11/2020] [Indexed: 12/12/2022]
Abstract
The bioactive sphingolipid ceramide 1-phosphate (C1P) regulates key physiologic cell functions and is implicated in a number of metabolic alterations and pathological processes. Initial studies using different types of fibroblasts and monocytes/macrophages revealed that C1P was mitogenic and that it promoted cell survival through inhibition of apoptosis. Subsequent studies implicated C1P in inflammatory responses with a specific role as pro-inflammatory agent. Specifically, C1P potently stimulated cytosolic phospholipase A2 (cPLA2) resulting in elevation of arachidonic acid and pro-inflammatory eicosanoid levels. However, increasing experimental evidence suggests that C1P can also exert anti-inflammatory actions in some cell types and tissues. Specifically, it has been demonstrated that C1P inhibits the release of pro-inflammatory cytokines and blocks activation of the pro-inflammatory transcription factor NF-κB in some cell types. Moreover, C1P was shown to increase the release of anti-inflammatory interleukin-10 in macrophages, and to overcome airway inflammation and reduce lung emphysema in vivo. Noteworthy, C1P stimulated cell migration, an action that is associated with diverse physiological cell functions, as well as with inflammatory responses and tumor dissemination. More recently, ceramide kinase (CerK), the enzyme that produces C1P in mammalian cells, has been shown to be upregulated during differentiation of pre-adipocytes into mature adipocytes, and that exogenous C1P, acting through a putative Gi protein-coupled receptor, negatively regulates adipogenesis. Although the latter actions seem to be contradictory, it is plausible that exogenous C1P may balance the adipogenic effects of intracellularly generated (CerK-derived) C1P in adipose tissue. The present review highlights novel signaling aspects of C1P and its impact in the regulation of cell growth and survival, inflammation and tumor dissemination.
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Affiliation(s)
- Natalia Presa
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), P.O. Box 644, 48080 Bilbao, Vizcaya, Spain
| | - Ana Gomez-Larrauri
- Department of Pneumology, Cruces University Hospital, Barakaldo, Vizcaya, Spain
| | - Asier Dominguez-Herrera
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), P.O. Box 644, 48080 Bilbao, Vizcaya, Spain
| | - Miguel Trueba
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), P.O. Box 644, 48080 Bilbao, Vizcaya, Spain
| | - Antonio Gomez-Muñoz
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), P.O. Box 644, 48080 Bilbao, Vizcaya, Spain.
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81
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Hadzic S, Wu CY, Avdeev S, Weissmann N, Schermuly RT, Kosanovic D. Lung epithelium damage in COPD - An unstoppable pathological event? Cell Signal 2020; 68:109540. [PMID: 31953012 DOI: 10.1016/j.cellsig.2020.109540] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 01/11/2020] [Accepted: 01/11/2020] [Indexed: 10/25/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a common term for alveolar septal wall destruction resulting in emphysema, and chronic bronchitis accompanied by conductive airway remodelling. In general, this disease is characterized by a disbalance of proteolytic/anti-proteolytic activity, augmented inflammatory response, increased oxidative/nitrosative stress, rise in number of apoptotic cells and decreased proliferation. As the first responder to the various environmental stimuli, epithelium occupies an important position in different lung pathologies, including COPD. Epithelium sequentially transitions from the upper airways in the direction of the gas exchange surface in the alveoli, and every cell type possesses a distinct role in the maintenance of the homeostasis. Basically, a thick ciliated structure of the airway epithelium has a major function in mucus secretion, whereas, alveolar epithelium which forms a thin barrier covered by surfactant has a function in gas exchange. Following this line, we will try to reveal whether or not the chronic bronchitis and emphysema, being two pathological phenotypes in COPD, could originate in two different types of epithelium. In addition, this review focuses on the role of lung epithelium in COPD pathology, and summarises underlying mechanisms and potential therapeutics.
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Affiliation(s)
- Stefan Hadzic
- Department of Internal Medicine, Cardio-Pulmonary Institute (CPI), German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Cheng-Yu Wu
- Department of Internal Medicine, Cardio-Pulmonary Institute (CPI), German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Sergey Avdeev
- Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Norbert Weissmann
- Department of Internal Medicine, Cardio-Pulmonary Institute (CPI), German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Ralph Theo Schermuly
- Department of Internal Medicine, Cardio-Pulmonary Institute (CPI), German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany
| | - Djuro Kosanovic
- Department of Internal Medicine, Cardio-Pulmonary Institute (CPI), German Center for Lung Research (DZL), Justus-Liebig University, Giessen, Germany; Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia.
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82
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Yeganeh B, Lee J, Bilodeau C, Lok I, Ermini L, Ackerley C, Caniggia I, Tibboel J, Kroon A, Post M. Acid Sphingomyelinase Inhibition Attenuates Cell Death in Mechanically Ventilated Newborn Rat Lung. Am J Respir Crit Care Med 2020; 199:760-772. [PMID: 30326731 DOI: 10.1164/rccm.201803-0583oc] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
RATIONALE Premature infants subjected to mechanical ventilation (MV) are prone to lung injury that may result in bronchopulmonary dysplasia. MV causes epithelial cell death and halts alveolar development. The exact mechanism of MV-induced epithelial cell death is unknown. OBJECTIVES To determine the contribution of autophagy to MV-induced epithelial cell death in newborn rat lungs. METHODS Newborn rat lungs and fetal rat lung epithelial (FRLE) cells were exposed to MV and cyclic stretch, respectively, and were then analyzed by immunoblotting and mass spectrometry for autophagy, apoptosis, and bioactive sphingolipids. MEASUREMENTS AND MAIN RESULTS Both MV and stretch first induce autophagy (ATG 5-12 [autophagy related 5-12] and LC3B-II [microtubule-associated proteins 1A/1B light chain 3B-II] formation) followed by extrinsic apoptosis (cleaved CASP8/3 [caspase-8/3] and PARP [poly(ADP-ribose) polymerase] formation). Stretch-induced apoptosis was attenuated by inhibiting autophagy. Coimmunoprecipitation revealed that stretch promoted an interaction between LC3B and the FAS (first apoptosis signal) cell death receptor in FRLE cells. Ceramide levels, in particular C16 ceramide, were rapidly elevated in response to ventilation and stretch, and C16 ceramide treatment of FRLE cells induced autophagy and apoptosis in a temporal pattern similar to that seen with MV and stretch. SMPD1 (sphingomyelin phosphodiesterase 1) was activated by ventilation and stretch, and its inhibition prevented ceramide production, LC3B-II formation, LC3B/first apoptosis signal interaction, caspase-3 activation, and, ultimately, FLRE cell death. SMPD1 inhibition also attenuated ventilation-induced autophagy and apoptosis in newborn rats. CONCLUSIONS Ventilation-induced ceramides promote autophagy-mediated cell death, and identifies SMPD1 as a potential therapeutic target for the treatment of ventilation-induced lung injury in newborns.
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Affiliation(s)
- Behzad Yeganeh
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Joyce Lee
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada.,2 Institute of Medical Science and
| | - Claudia Bilodeau
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada.,3 Department of Laboratory Medicine and Pathobiology, University of Toronto, Ontario, Canada
| | - Irene Lok
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Leonardo Ermini
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Cameron Ackerley
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Isabella Caniggia
- 4 Mount Sinai Hospital, the Lunenfeld-Tanenbaum Research Institute, Toronto, Ontario, Canada; and
| | - Jeroen Tibboel
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada.,5 Department of Pediatrics, Erasmus MC-Sophia, Rotterdam, the Netherlands
| | - Andre Kroon
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada.,5 Department of Pediatrics, Erasmus MC-Sophia, Rotterdam, the Netherlands
| | - Martin Post
- 1 Translational Medicine Program, Peter Gilgan Centre for Research and Learning, Hospital for Sick Children, Toronto, Ontario, Canada.,2 Institute of Medical Science and
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83
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Iron and Sphingolipids as Common Players of (Mal)Adaptation to Hypoxia in Pulmonary Diseases. Int J Mol Sci 2020; 21:ijms21010307. [PMID: 31906427 PMCID: PMC6981703 DOI: 10.3390/ijms21010307] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 12/24/2019] [Accepted: 12/31/2019] [Indexed: 12/11/2022] Open
Abstract
Hypoxia, or lack of oxygen, can occur in both physiological (high altitude) and pathological conditions (respiratory diseases). In this narrative review, we introduce high altitude pulmonary edema (HAPE), acute respiratory distress syndrome (ARDS), Chronic Obstructive Pulmonary Disease (COPD), and Cystic Fibrosis (CF) as examples of maladaptation to hypoxia, and highlight some of the potential mechanisms influencing the prognosis of the affected patients. Among the specific pathways modulated in response to hypoxia, iron metabolism has been widely explored in recent years. Recent evidence emphasizes hepcidin as highly involved in the compensatory response to hypoxia in healthy subjects. A less investigated field in the adaptation to hypoxia is the sphingolipid (SPL) metabolism, especially through Ceramide and sphingosine 1 phosphate. Both individually and in concert, iron and SPL are active players of the (mal)adaptation to physiological hypoxia, which can result in the pathological HAPE. Our aim is to identify some pathways and/or markers involved in the physiological adaptation to low atmospheric pressures (high altitudes) that could be involved in pathological adaptation to hypoxia as it occurs in pulmonary inflammatory diseases. Hepcidin, Cer, S1P, and their interplay in hypoxia are raising growing interest both as prognostic factors and therapeutical targets.
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84
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Chelvanambi S, Bogatcheva NV, Bednorz M, Agarwal S, Maier B, Alves NJ, Li W, Syed F, Saber MM, Dahl N, Lu H, Day RB, Smith P, Jolicoeur P, Yu Q, Dhillon NK, Weissmann N, Twigg Iii HL, Clauss M. HIV-Nef Protein Persists in the Lungs of Aviremic Patients with HIV and Induces Endothelial Cell Death. Am J Respir Cell Mol Biol 2019; 60:357-366. [PMID: 30321057 DOI: 10.1165/rcmb.2018-0089oc] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
It remains a mystery why HIV-associated end-organ pathologies persist in the era of combined antiretroviral therapy (ART). One possible mechanism is the continued production of HIV-encoded proteins in latently HIV-infected T cells and macrophages. The proapoptotic protein HIV-Nef persists in the blood of ART-treated patients within extracellular vesicles (EVs) and peripheral blood mononuclear cells. Here we demonstrate that HIV-Nef is present in cells and EVs isolated from BAL of patients on ART. We hypothesize that HIV-Nef persistence in the lung induces endothelial apoptosis leading to endothelial dysfunction and further pulmonary vascular pathologies. The presence of HIV-Nef in patients with HIV correlates with the surface expression of the proapoptotic endothelial-monocyte-activating polypeptide II (EMAPII), which was implicated in progression of pulmonary emphysema via mechanisms involving endothelial cell death. HIV-Nef protein induces EMAPII surface expression in human embryonic kidney 293T cells, T cells, and human and mouse lung endothelial cells. HIV-Nef packages itself into EVs and increases the amount of EVs secreted from Nef-expressing T cells and Nef-transfected human embryonic kidney 293T cells. EVs from BAL of HIV+ patients and Nef-transfected cells induce apoptosis in lung microvascular endothelial cells by upregulating EMAPII surface expression in a PAK2-dependent fashion. Transgenic expression of HIV-Nef in vascular endothelial-cadherin+ endothelial cells leads to lung rarefaction, characterized by reduced alveoli and overall increase in lung inspiratory capacity. These changes occur concomitantly with lung endothelial cell apoptosis. Together, these data suggest that HIV-Nef induces endothelial cell apoptosis via an EMAPII-dependent mechanism that is sufficient to cause pulmonary vascular pathologies even in the absence of inflammation.
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Affiliation(s)
- Sarvesh Chelvanambi
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.,2 R. L. Roudebush VA Medical Center, Indianapolis, Indiana
| | - Natalia V Bogatcheva
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.,2 R. L. Roudebush VA Medical Center, Indianapolis, Indiana
| | - Mariola Bednorz
- 3 Excellence Cluster Cardiopulmonary System, Universities of Giessen and Marburg Lung Center, member of Deutsches Zentrum für Lungenforschung, Justus Liebig University, Giessen, Germany
| | - Stuti Agarwal
- 4 Department of Medicine, Kansas University Medical Center, Kansas City, Kansas
| | - Bernhard Maier
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Nathan J Alves
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Wei Li
- 5 Department of Microbiology and Immunology, Indiana University, Indianapolis, Indiana
| | - Farooq Syed
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Manal M Saber
- 6 Clinical Pathology Department, Faculty of Medicine, Minia University, Minia, Egypt; and
| | - Noelle Dahl
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.,2 R. L. Roudebush VA Medical Center, Indianapolis, Indiana
| | - Hongyan Lu
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.,2 R. L. Roudebush VA Medical Center, Indianapolis, Indiana
| | - Richard B Day
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Patricia Smith
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Paul Jolicoeur
- 7 Institut de Recherches Cliniques de Montreal, Montreal, Canada
| | - Qigui Yu
- 5 Department of Microbiology and Immunology, Indiana University, Indianapolis, Indiana
| | - Navneet K Dhillon
- 4 Department of Medicine, Kansas University Medical Center, Kansas City, Kansas
| | - Norbert Weissmann
- 3 Excellence Cluster Cardiopulmonary System, Universities of Giessen and Marburg Lung Center, member of Deutsches Zentrum für Lungenforschung, Justus Liebig University, Giessen, Germany
| | - Homer L Twigg Iii
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Matthias Clauss
- 1 Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.,2 R. L. Roudebush VA Medical Center, Indianapolis, Indiana
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85
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Abstract
A better understanding of the pathogenesis of distinct chronic obstructive pulmonary disease (COPD) phenotypes will improve diagnostic and therapeutic options for this common disease. We present evidence that sphingolipids such as ceramides are involved in the emphysema pathogenesis. Whereas distinct ceramide species cause cell death by apoptosis and necroptosis, cell adaptation leads to accumulation of other sphingolipid metabolites that extend cell survival by triggering autophagy. Cigarette smoke-released sphingolipids have been involved in both the initiation and persistence of lung injury via intracellular signaling and paracrine effects mediated via exosomes and plasma membrane-bound microparticles. Strategies to control sphingolipid metabolite production may promote cellular repair and maintenance to treat COPD.
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86
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Pulmonary Endothelial Cell Apoptosis in Emphysema and Acute Lung Injury. ADVANCES IN ANATOMY EMBRYOLOGY AND CELL BIOLOGY 2019; 228:63-86. [PMID: 29288386 DOI: 10.1007/978-3-319-68483-3_4] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Apoptosis plays an essential role in homeostasis and pathogenesis of a variety of human diseases. Endothelial cells are exposed to various environmental and internal stress and endothelial apoptosis is a pathophysiological consequence of these stimuli. Pulmonary endothelial cell apoptosis initiates or contributes to progression of a number of lung diseases. This chapter will focus on the current understanding of the role of pulmonary endothelial cell apoptosis in the development of emphysema and acute lung injury (ALI) and the factors controlling pulmonary endothelial life and death.
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87
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De Cunto G, Brancaleone V, Riemma MA, Cerqua I, Vellecco V, Spaziano G, Cavarra E, Bartalesi B, D'Agostino B, Lungarella G, Cirino G, Lucattelli M, Roviezzo F. Functional contribution of sphingosine-1-phosphate to airway pathology in cigarette smoke-exposed mice. Br J Pharmacol 2019; 177:267-281. [PMID: 31499592 DOI: 10.1111/bph.14861] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/16/2019] [Accepted: 08/13/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AND PURPOSE A critical role for sphingosine kinase/sphingosine-1-phosphate (S1P) pathway in the control of airway function has been demonstrated in respiratory diseases. Here, we address S1P contribution in a mouse model of mild chronic obstructive pulmonary disease (COPD). EXPERIMENTAL APPROACH C57BL/6J mice have been exposed to room air or cigarette smoke up to 11 months and killed at different time points. Functional and molecular studies have been performed. KEY RESULTS Cigarette smoke caused emphysematous changes throughout the lung parenchyma coupled to a progressive collagen deposition in both peribronchiolar and peribronchial areas. The high and low airways showed an increased reactivity to cholinergic stimulation and α-smooth muscle actin overexpression. Similarly, an increase in airway reactivity and lung resistances following S1P challenge occurred in smoking mice. A high expression of S1P, Sph-K2 , and S1P receptors (S1P2 and S1P3 ) has been detected in the lung of smoking mice. Sphingosine kinases inhibition reversed the increased cholinergic response in airways of smoking mice. CONCLUSIONS AND IMPLICATIONS S1P signalling up-regulation follows the disease progression in smoking mice and is involved in the development of airway hyperresponsiveness. Our study defines a therapeutic potential for S1P inhibitors in management of airways hyperresponsiveness associated to emphysema in smokers with both asthma and COPD.
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Affiliation(s)
- Giovanna De Cunto
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | | | | | - Ida Cerqua
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | | | - Giuseppe Spaziano
- Department of Experimental Medicine L. Donatelli, Section of Pharmacology, School of Medicine, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Eleonora Cavarra
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Barbara Bartalesi
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Bruno D'Agostino
- Department of Experimental Medicine L. Donatelli, Section of Pharmacology, School of Medicine, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Giuseppe Lungarella
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Giuseppe Cirino
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Monica Lucattelli
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
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Fuentes-Mateos R, Jimeno D, Gómez C, Calzada N, Fernández-Medarde A, Santos E. Concomitant deletion of HRAS and NRAS leads to pulmonary immaturity, respiratory failure and neonatal death in mice. Cell Death Dis 2019; 10:838. [PMID: 31685810 PMCID: PMC6828777 DOI: 10.1038/s41419-019-2075-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/07/2019] [Accepted: 10/21/2019] [Indexed: 12/19/2022]
Abstract
We reported previously that adult (HRAS-/-; NRAS-/-) double knockout (DKO) mice showed no obvious external phenotype although lower-than-expected numbers of weaned DKO animals were consistently tallied after crossing NRAS-KO and HRAS-KO mice kept on mixed genetic backgrounds. Using mouse strains kept on pure C57Bl/6 background, here we performed an extensive analysis of the offspring from crosses between HRAS-KO and NRAS-KO mice and uncovered the occurrence of very high rates of perinatal mortality of the resulting DKO littermates due to respiratory failure during the first postnatal 24-48 h. The lungs of newborn DKO mice showed normal organ structure and branching but displayed marked defects of maturation including much-reduced alveolar space with thick separating septa and significant alterations of differentiation of alveolar (AT1, AT2 pneumocytes) and bronchiolar (ciliated, Clara cells) cell lineages. We also observed the retention of significantly increased numbers of undifferentiated progenitor precursor cells in distal lung epithelia and the presence of substantial accumulations of periodic acid-Schiff-positive (PAS+) material and ceramide in the lung airways of newborn DKO mice. Interestingly, antenatal dexamethasone treatment partially mitigated the defective lung maturation phenotypes and extended the lifespan of the DKO animals up to 6 days, but was not sufficient to abrogate lethality in these mice. RNA microarray hybridization analyses of the lungs of dexamethasone-treated and untreated mice uncovered transcriptional changes pointing to functional and metabolic alterations that may be mechanistically relevant for the defective lung phenotypes observed in DKO mice. Our data suggest that delayed alveolar differentiation, altered sphingolipid metabolism and ceramide accumulation are primary contributors to the respiratory stress and neonatal lethality shown by DKO mice and uncover specific, critical roles of HRAS and NRAS for correct lung differentiation that are essential for neonatal survival and cannot be substituted by the remaining KRAS function in this organ.
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Affiliation(s)
- Rocío Fuentes-Mateos
- Centro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC- Universidad de Salamanca) and CIBERONC, 37007, Salamanca, Spain
| | - David Jimeno
- Centro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC- Universidad de Salamanca) and CIBERONC, 37007, Salamanca, Spain
| | - Carmela Gómez
- Centro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC- Universidad de Salamanca) and CIBERONC, 37007, Salamanca, Spain
| | - Nuria Calzada
- Centro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC- Universidad de Salamanca) and CIBERONC, 37007, Salamanca, Spain
| | - Alberto Fernández-Medarde
- Centro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC- Universidad de Salamanca) and CIBERONC, 37007, Salamanca, Spain.
| | - Eugenio Santos
- Centro de Investigación del Cáncer-Instituto de Biología Molecular y Celular del Cáncer (CSIC- Universidad de Salamanca) and CIBERONC, 37007, Salamanca, Spain.
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Koike K, Berdyshev EV, Mikosz AM, Bronova IA, Bronoff AS, Jung JP, Beatman EL, Ni K, Cao D, Scruggs AK, Serban KA, Petrache I. Role of Glucosylceramide in Lung Endothelial Cell Fate and Emphysema. Am J Respir Crit Care Med 2019; 200:1113-1125. [PMID: 31265321 PMCID: PMC6888657 DOI: 10.1164/rccm.201812-2311oc] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 07/02/2019] [Indexed: 12/13/2022] Open
Abstract
Rationale: The loss of pulmonary endothelial cells in emphysema is associated with increased lung ceramide. Ceramide perturbations may cause adaptive alterations in other bioactive sphingolipids, with pathogenic implications. We previously reported a negative correlation between emphysema and circulating glycosphingolipids (GSLs). Glucosylceramide (GlcCer), the initial GSL synthesized from ceramide by GCS (GlcCer synthase), is required for embryonic survival, but its role in the lung is unknown.Objectives: To determine if cigarette smoke (CS) alters lung GlcCer and to elucidate the role of GCS in lung endothelial cell fate.Methods: GlcCer was measured by tandem mass spectrometry in BAL fluid of CS- or elastase-exposed mice, and GCS was detected by Western blotting in chronic obstructive pulmonary disease lungs and CS extract-exposed primary human lung microvascular endothelial cells (HLMVECs). The role of GlcCer and GCS on mTOR (mammalian target of rapamycin) signaling, autophagy, lysosomal function, and cell death were studied in HLMVECs with or without CS exposure.Measurements and Main Results: Mice exposed to chronic CS or to elastase, and patients with chronic obstructive pulmonary disease, exhibited significantly decreased lung GlcCer and GCS. In mice, lung GlcCer levels were negatively correlated with airspace size. GCS inhibition in HLMVEC increased lysosomal pH, suppressed mTOR signaling, and triggered autophagy with impaired lysosomal degradation and apoptosis, recapitulating CS effects. In turn, increasing GlcCer by GCS overexpression in HLMVEC improved autophagic flux and attenuated CS-induced apoptosis.Conclusions: Decreased GSL production in response to CS may be involved in emphysema pathogenesis, associated with autophagy with impaired lysosomal degradation and lung endothelial cell apoptosis.
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Affiliation(s)
- Kengo Koike
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - Evgeny V. Berdyshev
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - Andrew M. Mikosz
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - Irina A. Bronova
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - Anna S. Bronoff
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - John P. Jung
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - Erica L. Beatman
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - Kevin Ni
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - Danting Cao
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
- Pharmacology Graduate Program and
| | - April K. Scruggs
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
| | - Karina A. Serban
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Irina Petrache
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, National Jewish Health, Denver, Colorado; and
- Pharmacology Graduate Program and
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
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90
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Gong J, Zhao H, Liu T, Li L, Cheng E, Zhi S, Kong L, Yao HW, Li J. Cigarette Smoke Reduces Fatty Acid Catabolism, Leading to Apoptosis in Lung Endothelial Cells: Implication for Pathogenesis of COPD. Front Pharmacol 2019; 10:941. [PMID: 31555131 PMCID: PMC6727183 DOI: 10.3389/fphar.2019.00941] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/24/2019] [Indexed: 11/13/2022] Open
Abstract
Endothelial cell (EC) apoptosis contributes to cigarette smoke (CS)-induced pulmonary emphysema. Metabolism of glucose, glutamine, and fatty acid is dysregulated in patients with chronic obstructive pulmonary disease (COPD). Whether CS causes metabolic dysregulation in ECs leading to development of COPD remains elusive. We hypothesized that CS alters metabolism, resulting in apoptosis in lung ECs. To test this hypothesis, we treated primary mouse pulmonary microvascular ECs (PMVECs) with CS extract (CSE) and employed PMVECs from healthy subjects and COPD patients. We found that mitochondrial respiration was reduced in CSE-treated PMVECs and in PMVECs from COPD patients. Specifically, oxidation of fatty acids (FAO) was reduced in these cells, which linked to reduced carnitine palmitoyltransferase 1a (Cpt1a), an essential enzyme for carnitine shuttle. CSE-induced apoptosis was further increased when cells were treated with a specific Cpt1 inhibitor etomoxir or transfected with Cpt1a siRNA. L-Carnitine treatment augmented FAO but attenuated CSE-induced apoptosis by upregulating Cpt1a. CSE treatment increased palmitate-derived ceramide synthesis, which was reduced by L-carnitine. Although CSE treatment increased glycolysis, inhibiting glycolysis with 2-deoxy-d-glucose had no effects on CSE-mediated apoptosis in lung ECs. Conclusively, FAO reduction increases ceramide and apoptosis in lung ECs treated with CSE, which may contribute to the pathogenesis of COPD/emphysema.
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Affiliation(s)
- Jiannan Gong
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Hui Zhao
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Tanzhen Liu
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Lifang Li
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Erjing Cheng
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Shuyin Zhi
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Lufei Kong
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Hong-Wei Yao
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Jianqiang Li
- Department of Respiratory and Critical Care Medicine, The Second Hospital of Shanxi Medical University, Taiyuan, China
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91
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Ross MM, Piorczynski TB, Harvey J, Burnham TS, Francis M, Larsen MW, Roe K, Hansen JM, Stark MR. Ceramide: a novel inducer for neural tube defects. Dev Dyn 2019; 248:979-996. [PMID: 31390103 DOI: 10.1002/dvdy.93] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 07/02/2019] [Accepted: 07/21/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Circulating plasma ceramides, a class of bioactive sphingolipids, are elevated in metabolic disorders, including obesity. Infants of women with these disorders are at 2- to 3-fold greater risk for developing a neural tube defect (NTD). This study aimed to test the effects of embryonic exposure to C2-ceramides (C2) during neural tube closure. Preliminary data shows an increase in NTDs in chick embryos after C2 exposure, and addresses potential mechanisms. RESULTS Cell and embryo models were used to examine redox shifts after ceramide exposure. While undifferentiated P19 cells were resistant to ceramide exposure, neuronally differentiated P19 cells exhibited an oxidizing shift. Consistent with these observations, GSH E h curves revealed a shift to a more oxidized state in C2 treated embryos without increasing apoptosis or changing Pax3 expression, however cell proliferation was lower. Neural tube defects were observed in 45% of chick embryos exposed to C2, compared to 12% in control embryos. CONCLUSIONS C2 exposure during critical developmental stages increased the frequency of NTDs in the avian model. Increased ROS generation in cell culture, along with the more oxidative GSH E h profiles of C2 exposed cells and embryos, support a model wherein ceramide affects neural tube closure via altered tissue redox environments.
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Affiliation(s)
- Micah M Ross
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
| | - Ted B Piorczynski
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
| | - Jamison Harvey
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
| | - Tyson S Burnham
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
| | - Morgan Francis
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
| | - Madison W Larsen
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
| | - Kyle Roe
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
| | - Jason M Hansen
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
| | - Michael R Stark
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, Utah
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92
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Najafinobar N, Venkatesan S, von Sydow L, Klarqvist M, Olsson H, Zhou XH, Cloonan SM, Malmberg P. ToF-SIMS mediated analysis of human lung tissue reveals increased iron deposition in COPD (GOLD IV) patients. Sci Rep 2019; 9:10060. [PMID: 31296897 PMCID: PMC6624371 DOI: 10.1038/s41598-019-46471-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 06/25/2019] [Indexed: 02/03/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a debilitating lung disease that is currently the third leading cause of death worldwide. Recent reports have indicated that dysfunctional iron handling in the lungs of COPD patients may be one contributing factor. However, a number of these studies have been limited to the qualitative assessment of iron levels through histochemical staining or to the expression levels of iron-carrier proteins in cells or bronchoalveolar lavage fluid. In this study, we have used time of flight secondary ion mass spectrometry (ToF-SIMS) to visualize and relatively quantify iron accumulation in lung tissue sections of healthy donors versus severe COPD patients. An IONTOF 5 instrument was used to perform the analysis, and further multivariate analysis was used to analyze the data. An orthogonal partial least squares discriminant analysis (OPLS-DA) score plot revealed good separation between the two groups. This separation was primarily attributed to differences in iron content, as well as differences in other chemical signals possibly associated with lipid species. Further, relative quantitative analysis revealed twelve times higher iron levels in lung tissue sections of COPD patients when compared to healthy donors. In addition, iron accumulation observed within the cells was heterogeneously distributed, indicating cellular compartmentalization.
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Affiliation(s)
- Neda Najafinobar
- Medicinal Chemistry, Respiratory, Inflammation and Autoimmunity, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Shalini Venkatesan
- Target & Translational Science, Respiratory, Inflammation and Autoimmunity, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Lena von Sydow
- Medicinal Chemistry, Respiratory, Inflammation and Autoimmunity, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Magnus Klarqvist
- Early Product Development, Pharm Sci, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Henric Olsson
- Target & Translational Science, Respiratory, Inflammation and Autoimmunity, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Xiao-Hong Zhou
- Target & Translational Science, Respiratory, Inflammation and Autoimmunity, IMED Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Suzanne M Cloonan
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, New York City, New York, USA
| | - Per Malmberg
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden.
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93
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Tan WD, Shen HM, Wong WF. Dysregulated autophagy in COPD: A pathogenic process to be deciphered. Pharmacol Res 2019; 144:1-7. [DOI: 10.1016/j.phrs.2019.04.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 04/02/2019] [Accepted: 04/02/2019] [Indexed: 10/27/2022]
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94
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Chen H, Li Z, Dong L, Wu Y, Shen H, Chen Z. Lipid metabolism in chronic obstructive pulmonary disease. Int J Chron Obstruct Pulmon Dis 2019; 14:1009-1018. [PMID: 31190786 PMCID: PMC6524761 DOI: 10.2147/copd.s196210] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 03/19/2019] [Indexed: 12/18/2022] Open
Abstract
Dysregulated lipid metabolism plays crucial roles in various diseases, including diabetes mellitus, cancer, and neurodegeneration. Recent studies suggest that alterations in major lipid metabolic pathways contribute to pathogenesis of lung diseases, including chronic obstructive pulmonary disease (COPD). These changes allow lung tissue to meet the energy needs and trigger anabolic pathways that initiate the synthesis of active molecules directly involved in the inflammation. In this review, we summarize the changes of catabolism and anabolism of lipids, lipid molecules including lipid mediators, lipid synthesis transcription factors, cholesterol, and phospholipids, and how those lipid molecules participate in the initiation and resolution of inflammation in COPD.
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Affiliation(s)
- Haipin Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Institute of Respiratory Diseases, Hangzhou, Zhejiang, People's Republic of China
| | - Zhouyang Li
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Institute of Respiratory Diseases, Hangzhou, Zhejiang, People's Republic of China
| | - Lingling Dong
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Institute of Respiratory Diseases, Hangzhou, Zhejiang, People's Republic of China
| | - Yinfang Wu
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Institute of Respiratory Diseases, Hangzhou, Zhejiang, People's Republic of China
| | - Huahao Shen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Institute of Respiratory Diseases, Hangzhou, Zhejiang, People's Republic of China.,State Key Lab of Respiratory Disease, Guangzhou, Guangdong, People's Republic of China
| | - Zhihua Chen
- Key Laboratory of Respiratory Disease of Zhejiang Province, Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Zhejiang University School of Medicine, Institute of Respiratory Diseases, Hangzhou, Zhejiang, People's Republic of China
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95
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De Vita T, Albani C, Realini N, Migliore M, Basit A, Ottonello G, Cavalli A. Inhibition of Serine Palmitoyltransferase by a Small Organic Molecule Promotes Neuronal Survival after Astrocyte Amyloid Beta 1-42 Injury. ACS Chem Neurosci 2019; 10:1627-1635. [PMID: 30481470 DOI: 10.1021/acschemneuro.8b00556] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Alzheimer's disease (AD) is a slow-progressing disease of the brain characterized by symptoms such as impairment of memory and other cognitive functions. AD is associated with an inflammatory process that involves astrocytes and microglial cells, among other components. Astrocytes are the most abundant type of glial cells in the central nervous system (CNS). They are involved in inducing neuroinflammation. The present study uses astrocyte-neuron cocultures to investigate how ARN14494, a serine palmitoyltransferase (SPT) inhibitor, affects the CNS in terms of anti-inflammation and neuroprotection. SPT is the first rate-limiting enzyme in the de novo ceramide synthesis pathway. Consistent evidence suggests that ceramide is increased in AD brain patients. After β-amyloid 1-42 injury in an in vitro model of AD, ARN14494 inhibits SPT activity and the synthesis of long-chain ceramides and dihydroceramides that are involved in AD progression. In mouse primary cortical astrocytes, ARN14494 prevents the synthesis of proinflammatory cytokines TNFα and IL1β, growth factor TGFβ1, and oxidative stress-related enzymes iNOS and COX2. ARN14494 also exerts neuroprotective properties in primary cortical neurons. ARN14494 decreases neuronal death and caspase-3 activation in neurons, when the neuroinflammation is attenuated in astrocytes. These findings suggest that ARN14494 protects neurons from β-amyloid 1-42 induced neurotoxicity through a variety of mechanisms, including antioxidation, antiapoptosis, and anti-inflammation. SPT inhibition could therefore be a safe therapeutic strategy for ameliorating the pathology of Alzheimer's disease.
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Affiliation(s)
- Teresa De Vita
- Computational and Chemical Biology, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Clara Albani
- Drug Discovery and Development, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Natalia Realini
- D3 Validation, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Marco Migliore
- Drug Discovery and Development, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Abdul Basit
- Analytical Chemistry Facility, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Giuliana Ottonello
- Analytical Chemistry Facility, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Andrea Cavalli
- Computational and Chemical Biology, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento di Farmacia e Biotecnologie, Università di Bologna, Via Belmeloro 6, 40126 Bologna, Italy
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96
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Zhang Z, Wang J, Liu F, Yuan L, Ding M, Chen L, Yuan J, Yang K, Qian J, Lu W. Non-inflammatory emphysema induced by NO2 chronic exposure and intervention with demethylation 5-Azacytidine. Life Sci 2019; 221:121-129. [DOI: 10.1016/j.lfs.2019.02.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 02/01/2019] [Accepted: 02/09/2019] [Indexed: 01/04/2023]
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97
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Bodas M, Pehote G, Silverberg D, Gulbins E, Vij N. Autophagy augmentation alleviates cigarette smoke-induced CFTR-dysfunction, ceramide-accumulation and COPD-emphysema pathogenesis. Free Radic Biol Med 2019; 131:81-97. [PMID: 30500419 DOI: 10.1016/j.freeradbiomed.2018.11.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 11/19/2018] [Accepted: 11/19/2018] [Indexed: 01/27/2023]
Abstract
In this study, we aimed to investigate precise mechanism(s) of sphingolipid-imbalance and resulting ceramide-accumulation in COPD-emphysema. Where, human and murine emphysema lung tissues or human bronchial epithelial cells (Beas2b) were used for experimental analysis. We found that lungs of smokers and COPD-subjects with increasing emphysema severity demonstrate sphingolipid-imbalance, resulting in significant ceramide-accumulation and increased ceramide/sphingosine ratio, as compared to non-emphysema/non-smoker controls. Next, we found a substantial increase in emphysema chronicity-related ceramide-accumulation in murine (C57BL/6) lungs, while sphingosine levels only slightly increased. In accordance, the expression of the acid ceramidase decreased after CS-exposure. Moreover, CS-induced (sub-chronic) ceramide-accumulation was significantly (p < 0.05) reduced by treatment with TFEB/autophagy-inducing drug, gemfibrozil (GEM), suggesting that autophagy regulates CS-induced ceramide-accumulation. Next, we validated experimentally that autophagy/lipophagy-induction using an anti-oxidant, cysteamine, significantly (p < 0.05) reduces CS-extract (CSE)-mediated intracellular-ceramide-accumulation in p62 + aggresome-bodies. In addition to intracellular-accumulation, we found that CSE also induces membrane-ceramide-accumulation by ROS-dependent acid-sphingomyelinase (ASM) activation and plasma-membrane translocation, which was significantly controlled (p < 0.05) by cysteamine (an anti-oxidant) and amitriptyline (AMT, an inhibitor of ASM). Cysteamine-mediated and CSE-induced membrane-ceramide regulation was nullified by CFTR-inhibitor-172, demonstrating that CFTR controls redox impaired-autophagy dependent membrane-ceramide accumulation. In summary, our data shows that CS-mediated autophagy/lipophagy-dysfunction results in intracellular-ceramide-accumulation, while acquired CFTR-dysfunction-induced ASM causes membrane ceramide-accumulation. Thus, CS-exposure alters the sphingolipid-rheostat leading to the increased membrane- and intracellular- ceramide-accumulation inducing COPD-emphysema pathogenesis that is alleviated by treatment with cysteamine, a potent anti-oxidant with CFTR/autophagy-augmenting properties.
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Affiliation(s)
- Manish Bodas
- College of Medicine, Central Michigan University, Mt Pleasant, MI, USA
| | - Garrett Pehote
- College of Medicine, Central Michigan University, Mt Pleasant, MI, USA
| | - David Silverberg
- College of Medicine, Central Michigan University, Mt Pleasant, MI, USA
| | - Erich Gulbins
- Dept. of Molecular Biology, University of Duisburg-Essen, Germany and Dept. of Surgery, University of Cincinnati, OH, USA
| | - Neeraj Vij
- College of Medicine, Central Michigan University, Mt Pleasant, MI, USA; The Johns Hopkins University SOM University, Baltimore, MD, USA; VIJ Biotech LLC, Baltimore, MD, USA and 4Dx Ltd, Los Angeles, CA, USA.
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98
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Oelsner EC, Balte PP, Grams ME, Cassano PA, Jacobs DR, Barr RG, Burkart KM, Kalhan R, Kronmal R, Loehr LR, O’Connor GT, Schwartz JE, Shlipak M, Tracy RP, Tsai MY, White W, Yende S. Albuminuria, Lung Function Decline, and Risk of Incident Chronic Obstructive Pulmonary Disease. The NHLBI Pooled Cohorts Study. Am J Respir Crit Care Med 2019; 199:321-332. [PMID: 30261735 PMCID: PMC6363973 DOI: 10.1164/rccm.201803-0402oc] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 09/28/2018] [Indexed: 12/30/2022] Open
Abstract
RATIONALE Chronic lower respiratory diseases (CLRDs), including chronic obstructive pulmonary disease (COPD) and asthma, are the fourth leading cause of death. Prior studies suggest that albuminuria, a biomarker of endothelial injury, is increased in patients with COPD. OBJECTIVES To test whether albuminuria was associated with lung function decline and incident CLRDs. METHODS Six U.S. population-based cohorts were harmonized and pooled. Participants with prevalent clinical lung disease were excluded. Albuminuria (urine albumin-to-creatinine ratio) was measured in spot samples. Lung function was assessed by spirometry. Incident CLRD-related hospitalizations and deaths were classified via adjudication and/or administrative criteria. Mixed and proportional hazards models were used to test individual-level associations adjusted for age, height, weight, sex, race/ethnicity, education, birth year, cohort, smoking status, pack-years of smoking, renal function, hypertension, diabetes, and medications. MEASUREMENTS AND MAIN RESULTS Among 10,961 participants with preserved lung function, mean age at albuminuria measurement was 60 years, 51% were never-smokers, median albuminuria was 5.6 mg/g, and mean FEV1 decline was 31.5 ml/yr. For each SD increase in log-transformed albuminuria, there was 2.81% greater FEV1 decline (95% confidence interval [CI], 0.86-4.76%; P = 0.0047), 11.02% greater FEV1/FVC decline (95% CI, 4.43-17.62%; P = 0.0011), and 15% increased hazard of incident spirometry-defined moderate-to-severe COPD (95% CI, 2-31%, P = 0.0021). Each SD log-transformed albuminuria increased hazards of incident COPD-related hospitalization/mortality by 26% (95% CI, 18-34%, P < 0.0001) among 14,213 participants followed for events. Asthma events were not significantly associated. Associations persisted in participants without current smoking, diabetes, hypertension, or cardiovascular disease. CONCLUSIONS Albuminuria was associated with greater lung function decline, incident spirometry-defined COPD, and incident COPD-related events in a U.S. population-based sample.
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Affiliation(s)
- Elizabeth C. Oelsner
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Pallavi P. Balte
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Morgan E. Grams
- Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Patricia A. Cassano
- Division of Nutritional Sciences, College of Human Ecology, Cornell University, Cornell, New York
| | | | - R. Graham Barr
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Kristin M. Burkart
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Ravi Kalhan
- Department of Medicine, Northwestern University, Chicago, Illinois
| | - Richard Kronmal
- Department of Statistics, School of Public Health, University of Washington, Seattle, Washington
| | - Laura R. Loehr
- Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina
| | | | - Joseph E. Schwartz
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
- Department of Psychiatry and Behavioral Sciences, Stony Brook University, Stony Brook, New York
| | - Michael Shlipak
- Department of Medicine, University of California, San Francisco, San Francisco, California
| | - Russell P. Tracy
- Laboratory for Clinical Biochemistry Research, University of Vermont, Burlington, Vermont
| | - Michael Y. Tsai
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota
| | - Wendy White
- Jackson Heart Study, Undergraduate Training and Education Center, Tougaloo College, Jackson, Mississippi; and
| | - Sachin Yende
- Veterans Affairs Pittsburgh Healthcare System and
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
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99
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Cogolludo A, Villamor E, Perez-Vizcaino F, Moreno L. Ceramide and Regulation of Vascular Tone. Int J Mol Sci 2019; 20:ijms20020411. [PMID: 30669371 PMCID: PMC6359388 DOI: 10.3390/ijms20020411] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/02/2019] [Accepted: 01/16/2019] [Indexed: 02/07/2023] Open
Abstract
In addition to playing a role as a structural component of cellular membranes, ceramide is now clearly recognized as a bioactive lipid implicated in a variety of physiological functions. This review aims to provide updated information on the role of ceramide in the regulation of vascular tone. Ceramide may induce vasodilator or vasoconstrictor effects by interacting with several signaling pathways in endothelial and smooth muscle cells. There is a clear, albeit complex, interaction between ceramide and redox signaling. In fact, reactive oxygen species (ROS) activate different ceramide generating pathways and, conversely, ceramide is known to increase ROS production. In recent years, ceramide has emerged as a novel key player in oxygen sensing in vascular cells and mediating vascular responses of crucial physiological relevance such as hypoxic pulmonary vasoconstriction (HPV) or normoxic ductus arteriosus constriction. Likewise, a growing body of evidence over the last years suggests that exaggerated production of vascular ceramide may have detrimental effects in a number of pathological processes including cardiovascular and lung diseases.
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Affiliation(s)
- Angel Cogolludo
- Department of Pharmacology and Toxicology, School of Medicine, University Complutense of Madrid, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Ciudad Universitaria S/N, 28040 Madrid, Spain.
- Ciber Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain.
| | - Eduardo Villamor
- Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), 6202 AZ Maastricht, The Netherlands.
| | - Francisco Perez-Vizcaino
- Department of Pharmacology and Toxicology, School of Medicine, University Complutense of Madrid, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Ciudad Universitaria S/N, 28040 Madrid, Spain.
- Ciber Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain.
| | - Laura Moreno
- Department of Pharmacology and Toxicology, School of Medicine, University Complutense of Madrid, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Ciudad Universitaria S/N, 28040 Madrid, Spain.
- Ciber Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain.
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Koike K, Beatman EL, Schweitzer KS, Justice MJ, Mikosz AM, Ni K, Clauss MA, Petrache I. Subcutaneous administration of neutralizing antibodies to endothelial monocyte-activating protein II attenuates cigarette smoke-induced lung injury in mice. Am J Physiol Lung Cell Mol Physiol 2019; 316:L558-L566. [PMID: 30628489 DOI: 10.1152/ajplung.00409.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Proapoptotic and monocyte chemotactic endothelial monocyte-activating protein 2 (EMAPII) is released extracellularly during cigarette smoke (CS) exposure. We have previously demonstrated that, when administered intratracheally during chronic CS exposures, neutralizing rat antibodies to EMAPII inhibited endothelial cell apoptosis and lung inflammation and reduced airspace enlargement in mice (DBA/2J strain). Here we report further preclinical evaluation of EMAPII targeting using rat anti-EMAPII antibodies via either nebulization or subcutaneous injection. Both treatment modalities efficiently ameliorated emphysema-like disease in two different strains of CS-exposed mice, DBA/2J and C57BL/6. Of relevance for clinical applicability, this treatment showed therapeutic and even curative potential when administered either during or following CS-induced emphysema development, respectively. In addition, a fully humanized neutralizing anti-EMAPII antibody administered subcutaneously to mice during CS exposure retained anti-apoptotic and anti-inflammatory effects similar to that of the parent rat antibody. Furthermore, humanized anti-EMAPII antibody treatment attenuated CS-induced autophagy and restored mammalian target of rapamycin signaling in the lungs of mice, despite ongoing CS exposure. Together, our results demonstrate that EMAPII secretion is involved in CS-induced lung inflammation and cell injury, including apoptosis and autophagy, and that a humanized EMAPII neutralizing antibody may have therapeutic potential in emphysema.
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Affiliation(s)
- Kengo Koike
- Division of Pulmonary, Critical Care, and Sleep Medicine, National Jewish Health , Denver, Colorado
| | - Erica L Beatman
- Division of Pulmonary, Critical Care, and Sleep Medicine, National Jewish Health , Denver, Colorado
| | - Kelly S Schweitzer
- Division of Pulmonary, Critical Care, and Sleep Medicine, National Jewish Health , Denver, Colorado
| | - Matthew J Justice
- Division of Pulmonary, Critical Care, and Sleep Medicine, National Jewish Health , Denver, Colorado
| | - Andrew M Mikosz
- Division of Pulmonary, Critical Care, and Sleep Medicine, National Jewish Health , Denver, Colorado
| | - Kevin Ni
- Division of Pulmonary, Critical Care, and Sleep Medicine, National Jewish Health , Denver, Colorado
| | - Matthias A Clauss
- Indiana Center for Vascular Biology and Medicine and Department of Cellular and Integrative Physiology, Indiana University , Indianapolis, Indiana
| | - Irina Petrache
- Division of Pulmonary, Critical Care, and Sleep Medicine, National Jewish Health , Denver, Colorado.,Department of Medicine, University of Colorado Anschutz Medical Campus , Aurora, Colorado
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