Gene expression profiles in lung tissue of rats following exposure to mainstream cigarette smoke
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ABSTRACT:
ORGANISM(S): Rattus norvegicus
PROVIDER: GSE4516 | GEO | 2006/07/28
SECONDARY ACCESSION(S): PRJNA94523
REPOSITORIES: GEO
Similar Datasets
Project description:Expression data from rats exposed to cigarette smoke (CS) at three concentrations (sham, 300 µgTPM/l and 600 µgTPM/l) for 13 weeks (5d/week; 2hrs/day) after three different recovery times (2hrs, 6hrs and 20hrs after last treatment); lung tissue Keywords: recovery time course and dose dependency Male Sprague-Dawley rats were nose-only-exposed for 13 weeks in total, 5d/week, 2h/day to following concentrations of mainstream cigarette smoke from the standard reference cigarette 2R4F: sham, 300 µgTPM (Total particulate matter)/l or 600 µgTPM/l.
2006-07-27 | E-GEOD-4516 | biostudies-arrayexpress
Project description:normal human bronchial epithelial cultures from two cultures in parallel exposed to cigarette smoke (CS) or air (mock) at timepoints 4 hours and 24 hours. Keywords = cigarette smoke Keywords = microarray Keywords = bronchial cell Keywords = tobacco Keywords: time-course
2005-02-23 | GSE2302 | GEO
Project description:There is growing evidence that paternal pre-conception cigarette smoke (CS) exposure is associated with increased risk of behavioral disorders and cancer in offspring. To characterize the effects of CS exposure on the sperm epigenome and offspring neurodevelopment, we investigated the impact of pre-conception paternal CS exposure on mouse sperm DNA methylation and gene expression in offspring. We further investigated the role of oxidative stress on sperm epigenetic changes using a mouse model (Nrf-/-) with impaired antioxidant capacity. Lastly, we evaluated the capacity for sperm DNA methylation to recover following removal of CS for 1-5 spermatogenic cycles (28-171 days). We found that smoking significantly impacts sperm DNA methylation as well as DNA methylation and gene expression in offspring. These changes were largely recapitulated in Nrf-/- mice independent of smoke exposure. Recovery experiments indicated that about half of differentially methylated regions returned to normal within 28 days of removal from smoke, however additional recovery following longer periods was not observed. Thus, we present strong evidence that cigarette smoke exposure induces paternally mediated, heritable epigenetic changes. Parallel studies performed in Nrf-/- mice provide evidence for oxidative stress as the predominant underlying mechanism for smoke-induced epigenetic changes to sperm as well as changes in the offspring of smoke-exposed sires. Lastly, recovery experiments indicate that while many epigenetic changes are corrected following removal from smoke exposure, aberrant methylation persists at a significant number of regions even after five spermatogenic cycles
2020-05-06 | GSE133739 | GEO
Project description:There is growing evidence that paternal pre-conception cigarette smoke (CS) exposure is associated with increased risk of behavioral disorders and cancer in offspring. To characterize the effects of CS exposure on the sperm epigenome and offspring neurodevelopment, we investigated the impact of pre-conception paternal CS exposure on mouse sperm DNA methylation and gene expression in offspring. We further investigated the role of oxidative stress on sperm epigenetic changes using a mouse model (Nrf-/-) with impaired antioxidant capacity. Lastly, we evaluated the capacity for sperm DNA methylation to recover following removal of CS for 1-5 spermatogenic cycles (28-171 days). We found that smoking significantly impacts sperm DNA methylation as well as DNA methylation and gene expression in offspring. These changes were largely recapitulated in Nrf-/- mice independent of smoke exposure. Recovery experiments indicated that about half of differentially methylated regions returned to normal within 28 days of removal from smoke, however additional recovery following longer periods was not observed. Thus, we present strong evidence that cigarette smoke exposure induces paternally mediated, heritable epigenetic changes. Parallel studies performed in Nrf-/- mice provide evidence for oxidative stress as the predominant underlying mechanism for smoke-induced epigenetic changes to sperm as well as changes in the offspring of smoke-exposed sires. Lastly, recovery experiments indicate that while many epigenetic changes are corrected following removal from smoke exposure, aberrant methylation persists at a significant number of regions even after five spermatogenic cycles
2020-05-06 | GSE133740 | GEO
Project description:We have investigated the effects of cigarette smoke exposure in three different strains of mice. DBA/2 and C57Bl/6J are susceptible to smoke and develop different lung changes in response to chronic exposure, while ICR mice are resistant to smoke and do not develop emphysema. The present study was carried out to determine early changes in the gene expression profile of mice exposed to cigarette smoke with either a susceptible or resistant phenotype. Experiment Overall Design: Three strains of mice were exposed to smoke from three cigarette/day, 5d/wk for 4 weeks. Microarray analysis was carried out on total RNA extracted from the lung utilizing the Affymetrix platform.
2008-10-21 | E-GEOD-12036 | biostudies-arrayexpress
Project description:Cigarette smoke (CS) imposes a strong oxidative burden on exposed tissues resulting in a severely disturbed oxidant/antioxidant balance, which in the context of chronic exposure is assumed to be a key contributor to CS-related diseases. Because of its emerging central role in orchestrating the general cellular antioxidant response, the pathway leading to the activation of the transcription factor Nrf2 has received mounting attention over the past decade in investigations aimed at elucidating CS-induced patho-physiological mechanisms. To comprehensively characterize the impact of Nrf2 in acute and sub-chronic smoking scenarios, Nrf2 knock-out mice and their wildtype ICR littermates were exposed to either ambient air (sham exposure) or to one of three doses of CS for up to 5 months with two post-exposure endpoints of 1 and 13 days. The lungs of the mice were monitored for transcriptomic changes on a genome-wide level. 110 samples from 28 different groups are analyzed. For each group there are 4 replicates, besides two groups with only 3 replicates. Group parameteres are: genotype (WT, KN), treatment (sham, smoke), dosage of smoke treatment (low, medium, high), time of smoke treatment (1 day, 2 month, 5 month, 5 month + 1 day recovery, 5 month + 13 days recovery)
2010-02-27 | E-GEOD-18344 | biostudies-arrayexpress
Project description:Chronic obstructive pulmonary disease is a smoking-related disease that lacks effective therapies due partly to the poor understanding of disease pathogenesis. The aim of this study was to identify molecular pathways which could be responsible for the damaging consequences of smoking. To do this, we employed recently described bioinformatic methods to analyze differences in global gene expression, which we then related to the pathological changes induced by cigarette smoke (CS). Sprague-Dawley rats were exposed to whole-body CS for 1 day and for various periods up to 8 months. Keywords: Timecourse
2007-12-11 | GSE7079 | GEO
Project description:Cigarette smoking is a major risk factor for laryngeal diseases. Despite well-documented cigarette smoke (CS) induced laryngeal histopathological changes in animal models and humans, the underlying immunopathological mechanisms remain largely unexplored. The goal of this study was to evaluate inflammatory and immune cell responses in a CS-exposed larynx. Specifically, we investigated these responses in the mouse larynx after a 4-week subacute low (LD) and high-dose (HD) whole-body mainstream CS exposure.
2022-07-13 | GSE208079 | GEO
Project description:Introduction: Prenatal and postnatal cigarette smoke exposure enhances the risk of developing asthma. Despite this as well as other smoking related risks, 11% of women still smoke during pregnancy. We hypothesized that cigarette smoke exposure during prenatal development generates long lasting differential methylation altering transcriptional activity that correlates with disease. Methods: In a house dust mite (HDM) model of allergic airway disease, we measured airway hyperresponsiveness (AHR) and airway inflammation between mice exposed prenatally to cigarette smoke (CS) or filtered air (FA). DNA methylation and gene expression were then measured in lung tissue. Results: We demonstrate that HDM-treated CS mice develop a more severe allergic airway disease compared to HDM-treated FA mice including increased AHR and airway inflammation. While DNA methylation changes between the two HDM-treated groups failed to reach genome-wide significance, 99 DMRs had an uncorrected p-value < 0.001. 6 of these 99 DMRs were selected for validation, based on the immune function of adjacent genes, and only 2 of the 6 DMRs confirmed the bisulfite sequencing data. Additionally, genes near these 6 DMRs (Lif, Il27ra, Tle4, Ptk7, Nfatc2, and Runx3) are differentially expressed between HDM-treated CS mice and HDM-treated FA mice. Conclusions: Our findings confirm that prenatal exposure to cigarette smoke is sufficient to modify allergic airway disease, however, it is unlikely that specific methylation changes account for the exposure-response relationship. These findings highlight the important role in utero cigarette smoke exposure plays in the development of allergic airway disease.
2015-11-19 | GSE71718 | GEO
Project description:We have investigated the effects of cigarette smoke exposure in three different strains of mice. DBA/2 and C57Bl/6J are susceptible to smoke and develop different lung changes in response to chronic exposure, while ICR mice are resistant to smoke and do not develop emphysema. The present study was carried out to determine early changes in the gene expression profile of mice exposed to cigarette smoke with either a susceptible or resistant phenotype.
2008-07-10 | GSE12036 | GEO