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Ghaffari K, Dousti Kataj P, Torkaman-Boutorabi A, Vousooghi N. Pre-mating administration of theophylline could prevent the transgenerational effects of maternal morphine dependence on offspring anxiety behavior: The role of dopamine receptors. Pharmacol Biochem Behav 2023; 233:173660. [PMID: 37852327 DOI: 10.1016/j.pbb.2023.173660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 10/09/2023] [Accepted: 10/14/2023] [Indexed: 10/20/2023]
Abstract
Opioid addiction causes some molecular alterations in the brain reward pathway, such as changes in gene expression that may be transferred to the next generation via epigenetic mechanisms such as histone acetylation. This study aimed to evaluate the effect of theophylline as an HDAC (Histone deacetylases) activator on D1 and D2 dopamine receptor expression in the nucleus accumbens (NAc) and anxiety behavior in the offspring of morphine-dependent female rats. Female rats were exposed to escalating doses of morphine for six days and were then treated with theophylline (20 mg/kg) or saline for 10 days before mating with normal male rats. Male and female offspring were tested for anxiety behavior using an elevated plus maze apparatus. Besides, the expression of D1 and D2 dopamine receptors in the NAc was evaluated by real-time PCR (polymerase chain reaction). Results showed that offspring of morphine-dependent female rats had increased expression of both D1 and D2 receptors in the NAc, as well as decreased anxiety behavior, compared to control offspring. However, the mentioned effects were returned to normal levels in the offspring whose morphine-dependent mothers had received theophylline for 10 days before mating. It is concluded that theophylline may be therapeutically effective in minimizing the adverse consequences of maternal morphine dependence on offspring behavior by restoring normal dopamine receptor expression levels and modulating anxiety. To completely comprehend the underlying mechanisms of this phenomenon, more research is required.
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Affiliation(s)
- Kamran Ghaffari
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Parviz Dousti Kataj
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Anahita Torkaman-Boutorabi
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Research Center for Cognitive and Behavioral Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Nasim Vousooghi
- Research Center for Cognitive and Behavioral Sciences, Tehran University of Medical Sciences, Tehran, Iran; Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran.
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Avci E, Sarvari P, Savai R, Seeger W, Pullamsetti SS. Epigenetic Mechanisms in Parenchymal Lung Diseases: Bystanders or Therapeutic Targets? Int J Mol Sci 2022; 23:ijms23010546. [PMID: 35008971 PMCID: PMC8745712 DOI: 10.3390/ijms23010546] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/28/2021] [Accepted: 12/30/2021] [Indexed: 12/17/2022] Open
Abstract
Epigenetic responses due to environmental changes alter chromatin structure, which in turn modifies the phenotype, gene expression profile, and activity of each cell type that has a role in the pathophysiology of a disease. Pulmonary diseases are one of the major causes of death in the world, including lung cancer, idiopathic pulmonary fibrosis (IPF), chronic obstructive pulmonary disease (COPD), pulmonary hypertension (PH), lung tuberculosis, pulmonary embolism, and asthma. Several lines of evidence indicate that epigenetic modifications may be one of the main factors to explain the increasing incidence and prevalence of lung diseases including IPF and COPD. Interestingly, isolated fibroblasts and smooth muscle cells from patients with pulmonary diseases such as IPF and PH that were cultured ex vivo maintained the disease phenotype. The cells often show a hyper-proliferative, apoptosis-resistant phenotype with increased expression of extracellular matrix (ECM) and activated focal adhesions suggesting the presence of an epigenetically imprinted phenotype. Moreover, many abnormalities observed in molecular processes in IPF patients are shown to be epigenetically regulated, such as innate immunity, cellular senescence, and apoptotic cell death. DNA methylation, histone modification, and microRNA regulation constitute the most common epigenetic modification mechanisms.
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MESH Headings
- Animals
- Biomarkers
- Combined Modality Therapy
- DNA Methylation
- Diagnosis, Differential
- Disease Management
- Disease Susceptibility
- Epigenesis, Genetic
- Gene Expression Regulation
- Histones/metabolism
- Humans
- Idiopathic Pulmonary Fibrosis/diagnosis
- Idiopathic Pulmonary Fibrosis/etiology
- Idiopathic Pulmonary Fibrosis/metabolism
- Idiopathic Pulmonary Fibrosis/therapy
- Lung Diseases, Interstitial/diagnosis
- Lung Diseases, Interstitial/etiology
- Lung Diseases, Interstitial/metabolism
- Lung Diseases, Interstitial/therapy
- Pulmonary Disease, Chronic Obstructive/diagnosis
- Pulmonary Disease, Chronic Obstructive/etiology
- Pulmonary Disease, Chronic Obstructive/metabolism
- Pulmonary Disease, Chronic Obstructive/therapy
- Treatment Outcome
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Affiliation(s)
- Edibe Avci
- Department of Lung Development and Remodeling, Max-Planck Institute for Heart and Lung Research, Parkstrasse 1, 61231 Bad Nauheim, Germany; (E.A.); (P.S.); (R.S.); (W.S.)
| | - Pouya Sarvari
- Department of Lung Development and Remodeling, Max-Planck Institute for Heart and Lung Research, Parkstrasse 1, 61231 Bad Nauheim, Germany; (E.A.); (P.S.); (R.S.); (W.S.)
| | - Rajkumar Savai
- Department of Lung Development and Remodeling, Max-Planck Institute for Heart and Lung Research, Parkstrasse 1, 61231 Bad Nauheim, Germany; (E.A.); (P.S.); (R.S.); (W.S.)
- Department of Internal Medicine, Justus Liebig University, 35392 Giessen, Germany
- Institute for Lung Health (ILH), Justus Liebig University, 35392 Giessen, Germany
| | - Werner Seeger
- Department of Lung Development and Remodeling, Max-Planck Institute for Heart and Lung Research, Parkstrasse 1, 61231 Bad Nauheim, Germany; (E.A.); (P.S.); (R.S.); (W.S.)
- Department of Internal Medicine, Justus Liebig University, 35392 Giessen, Germany
- Institute for Lung Health (ILH), Justus Liebig University, 35392 Giessen, Germany
| | - Soni S. Pullamsetti
- Department of Lung Development and Remodeling, Max-Planck Institute for Heart and Lung Research, Parkstrasse 1, 61231 Bad Nauheim, Germany; (E.A.); (P.S.); (R.S.); (W.S.)
- Department of Internal Medicine, Justus Liebig University, 35392 Giessen, Germany
- Correspondence: ; Tel.: +49-603-270-5380; Fax: +49-603-270-5385
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LncRNA MIR155HG contributes to smoke-related chronic obstructive pulmonary disease by targeting miR-128-5p/BRD4 axis. Biosci Rep 2021; 40:222290. [PMID: 32129458 PMCID: PMC7070147 DOI: 10.1042/bsr20192567] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 02/17/2020] [Accepted: 03/03/2020] [Indexed: 12/19/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a common airway disease characterized by an exaggerated pulmonary inflammatory response. Long noncoding MIR155 host gene (lncRNA MIR155HG) has been identified to be related to the macrophage polarization in COPD. However, the detailed function of MIR155HG in cigarette smoke (CS)-mediated COPD remains largely unknown. The expression level of MIR155HG was elevated while miR-218-5p was decreased in lung tissues of smokers without or with COPD, especially in smokers with COPD, and cigarette smoke extract (CSE)-treated human pulmonary microvascular endothelial cell (HPMECs) in a dose- and time-dependent manner. Then, functional experiments showed that MIR155HG deletion could reverse CSE exposure-induced apoptosis and inflammation in HPMECs. MiR-218-5p was confirmed to be a target of MIR155HG and rescue assay showed miR-218-5p inhibitor attenuated the inhibitory action of MIR155HG knockdown on CSE-induced HPMECs. Subsequently, miR-218-5p was found to target bromodomain containing 4 (BRD4) directly, and miR-218-5p overexpression overturned CSE-induced injury of HPMECs via regulating BRD4. Additionally, co-expression analysis indicated MIR155HG indirectly regulated BRD4 expression in HPMECs via miR-218-5p. Thus, we concluded that MIR155HG contributed to the apoptosis and inflammation of HPMECs in smoke-related COPD by regulating miR-128-5p/BRD4 axis, providing a novel insight on the pathogenesis of COPD and a therapeutic strategy on COPD treatments.
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Liu X, Wang J, Luo H, Xu C, Chen X, Zhang R. MiR-218 Inhibits CSE-Induced Apoptosis and Inflammation in BEAS-2B by Targeting BRD4. Int J Chron Obstruct Pulmon Dis 2021; 15:3407-3416. [PMID: 33408470 PMCID: PMC7781039 DOI: 10.2147/copd.s278553] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 11/09/2020] [Indexed: 12/28/2022] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is an age-related disease, and its incidence rate is increasing every year. MicroRNAs (miRNAs) play critical roles in the COPD process and function as key biomarkers or potential therapeutic targets for patients with COPD. However, the potential roles and functional effects of miR-218 in COPD remain undefined. Methods The expression levels of miR-218 and bromodomain protein 4 (BRD4) were assessed by real-time quantitative polymerase chain reaction (RT-qPCR) or Western blot, respectively. In addition, a COPD cell model was established using cigarette smoke extract (CSE) in bronchial epithelial cell line (BEAS-2B). Enzyme-linked immunosorbent assay (ELISA) kit was applied to measure the concentrations of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-8 (IL-8) in cell supernatants of BEAS-2B cells. Moreover, cell apoptosis was examined by flow cytometry assay. The association relationship between miR-218 and BRD4 was confirmed by dual-luciferase reporter and RNA immunoprecipitation assay. Results MiR-218 was downregulated in COPD and CSE-induced BEAS-2B cells, and it was positively correlated with forced expiratory volume in 1 second (FEV1) % in COPD patients. Mechanically, overexpression of miR-218 or knockdown of BRD4 mitigated apoptosis and inflammation in BEAS-2B cells induced by CSE. Additionally, overexpression of BRD4 weakened the miR-218-mediated effects on CSE-induced BEAS-2B cells. Conclusion Overexpression of miR-218 inhibited CSE-induced apoptosis and inflammation in BEAS-2B cells by targeting BRD4 expression.
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Affiliation(s)
- Xiaoli Liu
- Department of Respiratory, The Second People's Hospital of Lanzhou City, Lanzhou City, Gansu Province, People's Republic of China
| | - Junchen Wang
- Department of Interventional Medicine and Oncology, The Affiliated Hospital of Northwest Minzu University, Lanzhou City, Gansu Province, People's Republic of China.,Department of Interventional Medicine and Oncology, Gansu Second People's Hospital, Lanzhou City, Gansu Province, People's Republic of China
| | - Huiling Luo
- Department of Respiratory, The Second People's Hospital of Lanzhou City, Lanzhou City, Gansu Province, People's Republic of China
| | - Chengxu Xu
- Department of Respiratory, The Second People's Hospital of Lanzhou City, Lanzhou City, Gansu Province, People's Republic of China
| | - Xingyu Chen
- Department of Respiratory, The Second People's Hospital of Lanzhou City, Lanzhou City, Gansu Province, People's Republic of China
| | - Rongxuan Zhang
- Department of Respiratory, The Second People's Hospital of Lanzhou City, Lanzhou City, Gansu Province, People's Republic of China
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6
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Osei ET, Florez-Sampedro L, Tasena H, Faiz A, Noordhoek JA, Timens W, Postma DS, Hackett TL, Heijink IH, Brandsma CA. miR-146a-5p plays an essential role in the aberrant epithelial-fibroblast cross-talk in COPD. Eur Respir J 2017; 49:49/5/1602538. [PMID: 28546273 DOI: 10.1183/13993003.02538-2016] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 01/29/2017] [Indexed: 12/21/2022]
Abstract
We previously reported that epithelial-derived interleukin (IL)-1α drives fibroblast-derived inflammation in the lung epithelial-mesenchymal trophic unit. Since miR-146a-5p has been shown to negatively regulate IL-1 signalling, we investigated the role of miR-146a-5p in the regulation of IL-1α-driven inflammation in chronic obstructive pulmonary disease (COPD).Human bronchial epithelial (16HBE14o-) cells were co-cultured with control and COPD-derived primary human lung fibroblasts (PHLFs), and miR-146a-5p expression was assessed with and without IL-1α neutralising antibody. Genomic DNA was assessed for the presence of the single nucleotide polymorphism (SNP) rs2910164. miR-146a-5p mimics were used for overexpression studies to assess IL-1α-induced signalling and IL-8 production by PHLFs.Co-culture of PHLFs with airway epithelial cells significantly increased the expression of miR-146a-5p and this induction was dependent on epithelial-derived IL-1α. miR-146a-5p overexpression decreased IL-1α-induced IL-8 secretion in PHLFs via downregulation of IL-1 receptor-associated kinase-1. In COPD PHLFs, the induction of miR-146a-5p was significantly less compared with controls and was associated with the SNP rs2910164 (GG allele) in the miR-146a-5p gene.Our results suggest that induction of miR-146a-5p is involved in epithelial-fibroblast communication in the lungs and negatively regulates epithelial-derived IL-1α induction of IL-8 by fibroblasts. The decreased levels of miR-146a-5p in COPD fibroblasts may induce a more pro-inflammatory phenotype, contributing to chronic inflammation in COPD.
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Affiliation(s)
- Emmanuel T Osei
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands .,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Centre for Heart and Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Laura Florez-Sampedro
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dept of Pharmacokinetics, Toxicology and Targeting, University of Groningen, Groningen, The Netherlands
| | - Hataitip Tasena
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Alen Faiz
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jacobien A Noordhoek
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dept of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Wim Timens
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Dirkje S Postma
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dept of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Tillie L Hackett
- Centre for Heart and Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Irene H Heijink
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Dept of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,These two authors contributed equally to this work
| | - Corry-Anke Brandsma
- Dept of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,These two authors contributed equally to this work
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da Silva IRV, de Araujo CLP, Dorneles GP, Peres A, Bard AL, Reinaldo G, Teixeira PJZ, Lago PD, Elsner VR. Exercise-modulated epigenetic markers and inflammatory response in COPD individuals: A pilot study. Respir Physiol Neurobiol 2017; 242:89-95. [PMID: 28435027 DOI: 10.1016/j.resp.2017.04.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/20/2017] [Accepted: 04/14/2017] [Indexed: 12/17/2022]
Abstract
The study investigated the effects of exercise on epigenetic signals and systemic cytokine levels in chronic obstructive pulmonary disease (COPD) individuals. Ten participants of a pulmonary rehabilitation program were submitted to 24 sessions of a supervisioned exercise protocol thrice-weekly (90min/session). Blood samples were collected at baseline, after the 1st session, before and after the 24th session. A DNA hypomethylation status was observed after the 1st session when compared at baseline, while global histone H4 acetylation status was unaltered in any time-points evaluated. No significant changes were observed on cytokine levels after the 1st session. A significant enhancement on interleukin 6 (IL-6) and a decrease on transforming growth factor-beta (TGF-β) levels were found after the 24th session when compared to the pre 24th session. Moreover, 23 sessions of exercise were able to diminish significantly the basal levels of IL-6 and interleukin 8 (IL-8). These data suggest a potential role of epigenetic machinery in mediating the anti-inflammatory effects of exercise in COPD patients.
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Affiliation(s)
- Ivy Reichert Vital da Silva
- Programa de Pós Graduação em Biociências e Reabilitação do Centro Universitário Metodista-IPA, Porto Alegre, RS, Brazil
| | | | - Gilson Pires Dorneles
- Cellular and Molecular Immunology Lab., Department of Health Basic Sciences,Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil
| | - Alessandra Peres
- Programa de Pós Graduação em Biociências e Reabilitação do Centro Universitário Metodista-IPA, Porto Alegre, RS, Brazil; Cellular and Molecular Immunology Lab., Department of Health Basic Sciences,Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil
| | - Andreia Luciana Bard
- Curso de Fisioterapia do Centro Universitário Metodista-IPA, Porto Alegre, RS, Brazil
| | - Gustavo Reinaldo
- Programa de Pós Graduação em Ciências da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil
| | - Paulo José Zimermann Teixeira
- Programa de Pós Graduação em Ciências da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil; Médico responsável pelo Serviço de Reabilitação Pulmonar do Pavilhão Pereira Filho do Hospital Santa Casa de Misericórdia de Porto Alegre, RS, Brazil
| | - Pedro Dal Lago
- Programa de Pós Graduação em Ciências da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, RS, Brazil
| | - Viviane Rostirola Elsner
- Programa de Pós Graduação em Biociências e Reabilitação do Centro Universitário Metodista-IPA, Porto Alegre, RS, Brazil.
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Busch R, Qiu W, Lasky-Su J, Morrow J, Criner G, DeMeo D. Differential DNA methylation marks and gene comethylation of COPD in African-Americans with COPD exacerbations. Respir Res 2016; 17:143. [PMID: 27814717 PMCID: PMC5097392 DOI: 10.1186/s12931-016-0459-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 10/27/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) is the third-leading cause of death worldwide. Identifying COPD-associated DNA methylation marks in African-Americans may contribute to our understanding of racial disparities in COPD susceptibility. We determined differentially methylated genes and co-methylation network modules associated with COPD in African-Americans recruited during exacerbations of COPD and smoking controls from the Pennsylvania Study of Chronic Obstructive Pulmonary Exacerbations (PA-SCOPE) cohort. METHODS We assessed DNA methylation from whole blood samples in 362 African-American smokers in the PA-SCOPE cohort using the Illumina Infinium HumanMethylation27 BeadChip Array. Final analysis included 19302 CpG probes annotated to the nearest gene transcript after quality control. We tested methylation associations with COPD case-control status using mixed linear models. Weighted gene comethylation networks were constructed using weighted gene coexpression network analysis (WGCNA) and network modules were analyzed for association with COPD. RESULTS There were five differentially methylated CpG probes significantly associated with COPD among African-Americans at an FDR less than 5 %, and seven additional probes that approached significance at an FDR less than 10 %. The top ranked gene association was MAML1, which has been shown to affect NOTCH-dependent angiogenesis in murine lung. Network modeling yielded the "yellow" and "blue" comethylation modules which were significantly associated with COPD (p-value 4 × 10-10 and 4 × 10-9, respectively). The yellow module was enriched for gene sets related to inflammatory pathways known to be relevant to COPD. The blue module contained the top ranked genes in the concurrent differential methylation analysis (FXYD1/LGI4, gene significance p-value 1.2 × 10-26; MAML1, p-value 2.0 × 10-26; CD72, p-value 2.1 × 10-25; and LPO, p-value 7.2 × 10-25), and was significantly associated with lung development processes in Gene Ontology gene-set enrichment analysis. CONCLUSION We identified 12 differentially methylated CpG sites associated with COPD that mapped to biologically plausible genes. Network module comethylation patterns have identified candidate genes that may be contributing to racial differences in COPD susceptibility and severity. COPD-associated comethylation modules contained genes previously associated with lung disease and inflammation and recapitulated known COPD-associated genes. The genes implicated by differential methylation and WGCNA analysis may provide mechanistic targets contributing to COPD susceptibility, exacerbations, and outcomes among African-Americans. TRIAL REGISTRATION Trial Registration: NCT00774176 , Registry: ClinicalTrials.gov, URL: www.clinicaltrials.gov , Date of Enrollment of First Participant: June 2004, Date Registered: 04 January 2008 (retrospectively registered).
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Affiliation(s)
- Robert Busch
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, 181 Longwood Ave, Room 449, Boston, 02111 MA USA
| | - Weiliang Qiu
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, 181 Longwood Ave, Room 449, Boston, 02111 MA USA
| | - Jessica Lasky-Su
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, 181 Longwood Ave, Room 449, Boston, 02111 MA USA
| | - Jarrett Morrow
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, 181 Longwood Ave, Room 449, Boston, 02111 MA USA
| | - Gerard Criner
- Temple Lung Center, Temple University Health System, Philadelphia, PA USA
| | - Dawn DeMeo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, 181 Longwood Ave, Room 449, Boston, 02111 MA USA
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Zeng H, Shi Z, Kong X, Chen Y, Zhang H, Peng H, Luo H, Chen P. Involvement of B-cell CLL/lymphoma 2 promoter methylation in cigarette smoke extract-induced emphysema. Exp Biol Med (Maywood) 2016; 241:808-16. [PMID: 26924842 DOI: 10.1177/1535370216635759] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 02/02/2016] [Indexed: 12/26/2022] Open
Abstract
Abnormal apoptotic events play an important role in the pathogenesis of emphysema. The B-cell CLL/lymphoma 2 (Bcl-2) family proteins are essential and critical regulators of apoptosis. We determined whether the anti-apoptotic Bcl-2 play a role in the cigarette smoke extract (CSE)-induced emphysema. Furthermore, given the involvement of epigenetics in chronic obstructive pulmonary disease, we hypothesized that the deregulation of Bcl-2 might be caused by gene methylation. The emphysema in BALB/C mice was established by intraperitoneally injection of CSE. 5-aza-2'-deoxycytidine (AZA; a demethylation reagent) and phosphate-buffered saline were also administered intraperitoneally as CSE. TUNEL assay was used to assess apoptotic index of pulmonary cells. The methylation status of CpG dinucleotides within the Bcl-2 promoter was observed in all groups by bisulfite sequencing PCR. Pulmonary expression of Bcl-2, Bax, and cytochrome C were measured after four weeks of treatment. The apoptotic index of pulmonary cells in CSE injection group was much higher than control ((25.88 ± 7.55)% vs (6.28 ± 2.96)%). Compared to control mice, decreased expression of Bcl-2 and high methylation of Bcl-2 promoter was observed in CSE injected mice (0.88 ± 0.08 vs 0.49 ± 0.11, (3.82 ± 1.34)% vs (35.68 ± 5.99)%, P < 0.01).CSE treatment induced lung cell apoptosis and decreased lung function. AZA treatment increased Bcl-2 expression with Bcl-2 promoter demethylation. AZA also alleviated the lung cell apoptosis and function failure caused by CSE treatment. The decreased expression of anti-apoptotic Bcl-2 might account for the increased apoptosis in CSE induced-emphysema. Apparently, epigenetic alternation played a role in this deregulation of Bcl-2 expression, and it might support the involvement of epigenetic events in the pathogenesis of emphysema.
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Affiliation(s)
- Huihui Zeng
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Zhihui Shi
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Xianglong Kong
- Department of Respiratory Medicine, The First Hospital of Changsha, Changsha, Hunan 410011, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hongliang Zhang
- Department of Emergency Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hong Peng
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Hong Luo
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Ping Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
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Cheng L, Liu J, Li B, Liu S, Li X, Tu H. Cigarette Smoke-Induced Hypermethylation of the GCLC Gene Is Associated With COPD. Chest 2016; 149:474-482. [PMID: 26087411 DOI: 10.1378/chest.14-2309] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Cigarette smoking is a major environmental contributor to COPD, but understanding its epigenetic regulation of oxidative genes involved in the pathogenesis of COPD remains elusive. METHODS We analyzed DNA methylation on glutamate-cysteine ligase catalytic subunit (GCLC), glutathione S-transferase M1 (GSTM1), glutathione S-transferase P1 (GSTP1), and superoxide dismutase 3 (SOD3) promoters in clinical samples from patients with COPD (current-smoker [CS-COPD]; ex-smoker [ES-COPD]) and subjects with normal pulmonary function (current-smoker [CS-NS]; ex-smoker [ES-NS]; never-smoker [NC]). Expression of GCLC messenger RNA (mRNA) and glutathione (GSH) synthesis in these clinical samples and human bronchial epithelial (BEAS-2B) cells stimulated by cigarette-smoke extract (CSE) was evaluated. GCLC mRNA and protein levels were measured to determine effects of demethylation and deacetylation agents on CSE-treated BEAS-2B cells. RESULTS The DNA methylation level of the GCLC promoter was significantly increased in CS-COPD, CS-NS, and ES-COPD groups compared with ES-NS and NC groups. However, there were no significant differences in DNA methylation values of GSTM1, GSTP1, and SOD3 promoters among these groups. Expression of GCLC mRNA was downregulated in the lungs, and GSH levels decreased in plasma as a consequence of hypermethylation of the GCLC promoter. Similarly, CSE-treated BEAS-2B cells had hypermethylation of the GCLC gene, mRNA downregulation, and a decreased intracellular GSH level. GCLC expression in CSE-treated BEAS-2B cells was restored by the methylation inhibitor, 5-aza-2'-deoxycytidine, but not by the deacetylation agent, trichostatin A. CONCLUSIONS Cigarette smoke-induced hypermethylation of the GCLC promoter is related to the initiation and progression of COPD. Our finding may provide a new strategy for COPD intervention by developing demethylation agents targeting GCLC hypermethylation.
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Affiliation(s)
- Linling Cheng
- The State Key Laboratory of Respiratory Disease, National Clinical Center for Respiratory Diseases, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jun Liu
- The State Key Laboratory of Respiratory Disease, National Clinical Center for Respiratory Diseases, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Bing Li
- Research Center for Experimental Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Shengming Liu
- Department of Respiratory Medicine, First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
| | - Xianyan Li
- Department of Respiratory Medicine, First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
| | - Hongbin Tu
- The State Key Laboratory of Respiratory Disease, National Clinical Center for Respiratory Diseases, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China; Research Center for Experimental Medicine, Guangzhou Medical University, Guangzhou, Guangdong, China.
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11
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Liu Z, Li W, Lv J, Xie R, Huang H, Li Y, He Y, Jiang J, Chen B, Guo S, Chen L. Identification of potential COPD genes based on multi-omics data at the functional level. MOLECULAR BIOSYSTEMS 2016; 12:191-204. [DOI: 10.1039/c5mb00577a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel systematic approach MMMG (Methylation–MicroRNA–MRNA–GO) to identify potential COPD genes and their classifying performance evaluation.
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Affiliation(s)
- Zhe Liu
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Wan Li
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Junjie Lv
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Ruiqiang Xie
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Hao Huang
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Yiran Li
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Yuehan He
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Jing Jiang
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Binbin Chen
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Shanshan Guo
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
| | - Lina Chen
- College of Bioinformatics Science and Technology
- Harbin Medical University
- Harbin
- China
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12
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Yang M, Chen P, Peng H, Zhang H, Chen Y, Cai S, Lu Q, Guan C. Cigarette smoke extract induces aberrant cytochrome-c oxidase subunit II methylation and apoptosis in human umbilical vascular endothelial cells. Am J Physiol Cell Physiol 2015; 308:C378-84. [PMID: 25500741 DOI: 10.1152/ajpcell.00197.2014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Cigarette smoke-induced apoptosis of vascular endothelial cells contributes to the pathogenesis of chronic obstructive pulmonary disease. However, the mechanisms responsible for endothelial apoptosis remain poorly understood. We conducted an in vitro study to investigate whether DNA methylation is involved in smoking-induced endothelial apoptosis. Human umbilical vascular endothelial cells (HUVECs) were exposed to cigarette smoke extract (CSE) at a range of concentrations (0-10%). HUVECs were also incubated with a demethylating reagent, 5-aza-2'-deoxycytidinem (AZA), with and without CSE. Apoptosis was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assay and flow cytometry using annexin V-FITC/propidium iodide staining. We found that CSE treatment significantly increased HUVEC apoptosis in a dose- and time-dependent manner. Quantitative real-time RT-PCR and immunoblot revealed that CSE treatment decreased cytochrome-c oxidase subunit II (COX II) mRNA and protein levels and decreased COX activity. Methylation-specific PCR and direct bisulfite sequencing revealed positive COX II gene methylation. AZA administration partly increased mRNA and protein expressions of COX II, and COX activity decreased by CSE and attenuated the toxic effects of CSE. Our results showed that CSE induced aberrant COX II methylation and apoptosis in HUVECs.
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Affiliation(s)
- Min Yang
- Department of Respiratory Medicine, The Second Xiangya Hospital of Central-South University, Hunan, Changsha, China
| | - Ping Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital of Central-South University, Hunan, Changsha, China;
| | - Hong Peng
- Department of Respiratory Medicine, The Second Xiangya Hospital of Central-South University, Hunan, Changsha, China
| | - Hongliang Zhang
- Emergency Department, The Second Xiangya Hospital of Central-South University, Hunan, Changsha, China
| | - Yan Chen
- Department of Respiratory Medicine, The Second Xiangya Hospital of Central-South University, Hunan, Changsha, China
| | - Shan Cai
- Department of Respiratory Medicine, The Second Xiangya Hospital of Central-South University, Hunan, Changsha, China
| | - Qianjin Lu
- Dermatological Department, The Second Xiangya Hospital of Central-South University, Hunan, Changsha, China
| | - Chaxiang Guan
- Department of Physiology, Central-South University, Hunan, Changsha, China
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13
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Platé M, Lawson PJ, Hill MR, Quint JK, Kumari M, Laurent GJ, Wedzicha JA, Chambers RC, Hurst JR. Impact of a functional polymorphism in the PAR-1 gene promoter in COPD and COPD exacerbations. Am J Physiol Lung Cell Mol Physiol 2014; 307:L311-6. [PMID: 24973402 PMCID: PMC4137163 DOI: 10.1152/ajplung.00128.2014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 06/21/2014] [Indexed: 11/24/2022] Open
Abstract
Proteinase-activated receptor-1 (PAR-1) plays a key role in mediating the interplay between coagulation and inflammation in response to injury. The aim of this study was to investigate the role of the promoter single-nucleotide polymorphism (SNP) rs2227744G>A in modulating PAR-1/F2R gene expression in the context of chronic obstructive pulmonary disease (COPD) and COPD exacerbations. The function of the rs2227744G>A SNP was investigated by using reporter gene assays. The frequency of the polymorphism in the UK population was assessed by genotyping 8,579 healthy individuals from the Whitehall II and English Longitudinal Study of Ageing cohorts. The rs2227744G>A SNP was genotyped in a carefully phenotyped cohort of 203 COPD cases and matched controls. The results were further replicated in two different COPD cohorts. The minor allele of the rs2227744G>A polymorphism was found to increase F2R expression by 2.6-fold (P < 0.001). The rs2227744G>A SNP was not significantly associated with COPD, or with lung function, in all cohorts. The minor allele of the SNP was found to be associated with protection from frequent exacerbations (P = 0.04) in the cohort of COPD patients for which exacerbation frequency was available. Considering exacerbations as a continuous variable, the presence of the minor allele was associated with a significantly lower COPD exacerbation rate (3.03 vs. 1.98 exacerbations/year, Mann-Whitney U-test P = 0.04). Taken together, these data do not support a role for the rs2227744G>A F2R polymorphism in the development of COPD but suggest a protective role for this polymorphism from frequent exacerbations. Studies in separate cohorts to replicate these findings are warranted.
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Affiliation(s)
- Manuela Platé
- Centre for Inflammation and Tissue Repair, University College London, London, United Kingdom
| | - Phillippa J Lawson
- Centre for Inflammation and Tissue Repair, University College London, London, United Kingdom
| | - Michael R Hill
- Centre for Inflammation and Tissue Repair, University College London, London, United Kingdom
| | - Jennifer K Quint
- Centre for Respiratory Medicine, University College London, London, United Kingdom; and
| | - Meena Kumari
- Faculty of Population Health Sciences, University College London, London, United Kingdom
| | - Geoffrey J Laurent
- Centre for Inflammation and Tissue Repair, University College London, London, United Kingdom
| | - Jadwiga A Wedzicha
- Centre for Respiratory Medicine, University College London, London, United Kingdom; and
| | - Rachel C Chambers
- Centre for Inflammation and Tissue Repair, University College London, London, United Kingdom;
| | - John R Hurst
- Centre for Inflammation and Tissue Repair, University College London, London, United Kingdom
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14
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McLean S, Wild SH, Simpson CR, Sheikh A. Models for estimating projections for the prevalence and disease burden of chronic obstructive pulmonary disease (COPD): systematic review protocol. PRIMARY CARE RESPIRATORY JOURNAL : JOURNAL OF THE GENERAL PRACTICE AIRWAYS GROUP 2013; 22:PS8-21. [PMID: 23732639 PMCID: PMC6442795 DOI: 10.4104/pcrj.2013.00048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 04/16/2013] [Accepted: 04/24/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Susannah McLean
- Allergy and Respiratory Research Group, Centre for Population Health Sciences, The University of Edinburgh, Edinburgh, UK.
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15
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Wang H, Mattes WB, Richter P, Mendrick DL. An omics strategy for discovering pulmonary biomarkers potentially relevant to the evaluation of tobacco products. Biomark Med 2013; 6:849-60. [PMID: 23227851 DOI: 10.2217/bmm.12.78] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Smoking is known to cause serious lung diseases including chronic bronchitis, chronic obstructive lung disease, obstruction of small airways, emphysema and cancer. Tobacco smoke is a complex chemical aerosol containing at least 8000 chemical constituents, either tobacco derived or added by tobacco product manufacturers. Identification of all of the toxic agents in tobacco smoke is challenging, and efforts to understand the mechanisms by which tobacco use causes disease will be informed by new biomarkers of exposure and harm. In 2009, President Obama signed into law the Family Smoking Prevention and Tobacco Control Act granting the US FDA the authority to regulate tobacco products to protect public health. This perspective article presents the background, rationale and strategy for using omics technologies to develop new biomarkers, which may be of interest to the FDA when implementing the Family Smoking Prevention and Tobacco Control Act.
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Affiliation(s)
- Honggang Wang
- Food & Drug Administration, National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR 72079, USA
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16
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Soeda S, Ohyashiki JH, Ohtsuki K, Umezu T, Setoguchi Y, Ohyashiki K. Clinical relevance of plasma miR-106b levels in patients with chronic obstructive pulmonary disease. Int J Mol Med 2013; 31:533-9. [PMID: 23338559 DOI: 10.3892/ijmm.2013.1251] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 12/17/2012] [Indexed: 11/06/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by both chronic inflammation in the airway and systemic inflammation; however, the molecular mechanism of COPD has not been fully elucidated. By measuring microRNA (miRNA) expression in the plasma of COPD subjects, we aimed to identify the clinical relevance of plasma miRNA levels in these patients. Blood samples were obtained from COPD patients and age-matched normal controls. We initially produced plasma miRNA expression profiles using TaqMan low-density array screening. For further validation, individual qRT-PCRs were performed in 40 COPD patients and 20 healthy subjects. TaqMan low-density array screening showed that 9 miRNAs (miR-29b, miR-483-5p, miR-152, miR-629, miR-26b, miR-101, miR-106b, miR-532-5p and miR-133b) were significantly downregulated in the plasma from COPD patients when compared with normal smokers. Among these miRNAs, we focused on miR-106b. A reduction in the plasma miR-106b levels was evident in COPD ex-smokers and COPD current smokers compared with levels in smokers. There was a negative correlation between the plasma miR-106b level and the duration of disease since diagnosis in COPD ex-smokers and the duration of smoking in COPD current smokers. These findings support the concept that progressive reduction in the plasma miR-106b level may reflect persistent and systemic changes even after the discontinuation of smoking in COPD patients. miR-106b may therefore play an important role in the pathogenesis of COPD.
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Affiliation(s)
- Seiko Soeda
- Division of Respiratory Medicine, Tokyo Medical University, Tokyo, Japan.
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17
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Knight DA, Yang IA, Ko FWS, Lim TK. Year in review 2011: asthma, chronic obstructive pulmonary disease and airway biology. Respirology 2012; 17:563-72. [PMID: 22248232 DOI: 10.1111/j.1440-1843.2012.02126.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Darryl A Knight
- UBC James Hogg Research Centre, Institute for Heart + Lung Health, Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada.
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18
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Abstract
Although there are nonmodifiable genetic risk factors for COPD, most known risk factors for development and progression of COPD can be corrected. Continued efforts to encourage smoking cessation and measures to reduce exposure to SHS, outdoor air pollution, biomass smoke, and occupational and related amateur exposures will have a significant impact on worldwide health.
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Affiliation(s)
- Cheryl Pirozzi
- Pulmonary Division, Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
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19
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Lee A, Nofziger C, Dossena S, Vanoni S, Diasio R, Paulmichl M. Methylation of the human pendrin promoter. Cell Physiol Biochem 2011; 28:397-406. [PMID: 22116354 DOI: 10.1159/000335102] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2011] [Indexed: 01/14/2023] Open
Abstract
Inspection of the nucleotide sequence of the human pendrin promoter revealed the presence of a CpG island. We investigated the ability of IL-4 to stimulate pendrin message expression in two separate cell lines: the NCI-H292 lung epithelial cell line and the human embryonic kidney (HEK)-Blue cell line. The expression of pendrin mRNA was significantly increased in both cells types after 4, 24, 48 and 72 hours treatment with IL-4, and interestingly, the increase in pendrin mRNA was greater in the NCI-H292 cells. Methylation of CpG sites within the promoter regions of genes can affect activities of gene promoters and have either positive or negative implications on the transcription and mRNA expression of the particular gene. We quantitatively analyzed the methylation status of 35 CpG sites within the human pendrin promoter in both cell lines. The basal methylation pattern was statistically different at multiple CpG sites between the NCI-H292 and HEK-Blue cells. We propose that the difference in basal methylation between the two cell types may determine a cell-specific response to IL-4 in terms of pendrin mRNA expression.
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Affiliation(s)
- Adam Lee
- Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota 55408, USA
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