Project description:Smoking is the leading cause of lung cancer death, although only a small percentage of smokers develop the disease. Cigarette smoke exposure is known to cause a field of injury in cells throughout the respiratory tract, and while these airway epithelial cells are morphologically normal, they can undergo genetic alterations in response to cigarette smoke exposure. We used microarrays to analyze the gene expression of epithelial cells in the extrathoracic epithelium, specifically nasal and buccal epithelium, to see if these cells underwent similar genetic alterations in response to tobacco exposure as seen in bronchial epithelial cells as has been previously reported. Experiment Overall Design: Buccal and nasal epithelial cell samples were collected from healthy current and never smokers. RNA was isolated from these samples and hybridized to Affymetrix microarrays. Gene expression from never smokers was compared to never smoker gene expression from bronchial epithelium as well as expression data from other tissues to determine commonalities in expression patterns in normal extra- and intra-thoracic samples. In addition, gene expression from smokers and nonsmokers was compared in bronchial, nasal, and buccal epithelium to determine similarities in gene expression in these tissues in response to cigarette smoker exposure.
Project description:mRNA expression was assayed from bronchial epithelial cells collected via bronchoscopy and nasal epithelial cells collected by brushing the inferior turbinate from healthy current and never smoker volunteers in order to determine the relationship between smoking-related gene expression changes in bronchial and nasal epithelium within the same individual. Bronchial epithelial cells were collected from current and never smokers via bronchoscopy, and nasal epithelial cells were collected by brushing the inferior turbinate during the same clinic visit. 1ug of RNA was isolated and hybridized to Affymetrix Human Exon 1.0 ST microarrays to obtain mRNA expression. The genome build upon which transcript assignments are based is hg18 (HuEx-1_0-st-v2.na27.hg18.transcript.csv).
Project description:mRNA expression was assayed from bronchial epithelial cells collected via bronchoscopy from healthy current and never smoker volunteers in order to determine relationships between microRNA and mRNA expression in bronchial epithelial cell samples across current and never smokers and within the same individual. Keywords: Global mRNA expression profiling
Project description:This SuperSeries is composed of the following subset Series: GSE14633: Gene expression from bronchial epithelial cell samples of current and never smokers. GSE14634: MicroRNA expression from bronchial epithelial cell samples of current and never smokers. Refer to individual Series
Project description:MicroRNA expression was assayed from bronchial epithelial cells collected via bronchoscopy from healthy current and never smoker volunteers in order to determine the effect of cigarette smoke exposure on airway epithelial microRNA expression Keywords: Global microRNA expression profiling Bronchial epithelial cells were collected from current and never smokers via bronchoscopy. Low molecular weight RNA ( < 200 nucleotides) was isolated and hybridized to Invitrogen NCode microRNA microarrays to determine which microRNAs detected in bronchial epithelial cells were differentially expressed in the airways of smokers.
Project description:mRNA expression was profiled from pooled bronchial airway epithelial cell brushings (n=3 patients/pool) obtained during bronchoscopy from healthy never (NS) and current smokers (S) and smokers with (C) and without (NC) lung cancer
Project description:mRNA expression was assayed from bronchial epithelial cells collected via bronchoscopy and nasal epithelial cells collected by brushing the inferior turbinate from healthy current and never smoker volunteers in order to determine the relationship between smoking-related gene expression changes in bronchial and nasal epithelium within the same individual.
Project description:mRNA expression was profiled from pooled bronchial airway epithelial cell brushings (n=3 patients/pool) obtained during bronchoscopy from healthy never (NS) and current smokers (S) and smokers with (C) and without (NC) lung cancer 4 samples were sequened, each representing a pool of 3 patients. The phenotypes of the 4 samples were as follows: healthy non-smoker, healthy smoker, smoker without lung cancer and smoker with lung cancer.
